Prepare 0.9.2 release (#3530)

Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>

.github/ISSUE_TEMPLATE/config.yml

@@ -1,5 +1,8 @@
 blank_issues_enabled: false
 contact_links:
+- name: Feature requests for the gha-runner-scale-set (actions.github.com API group)
+  about: Feature requests associated with the actions.github.com group should be posted on the GitHub Community Support Forum
+  url: https://github.com/orgs/community/discussions/categories/actions
 - name: Sponsor ARC Maintainers
   about: If your business relies on the continued maintainance of actions-runner-controller, please consider sponsoring the project and the maintainers.
   url: https://github.com/actions/actions-runner-controller/tree/master/CODEOWNERS

.github/ISSUE_TEMPLATE/github_bug_report.yaml

@@ -0,0 +1,113 @@
+name: Bug Report (actions.github.com API group)
+description: File a bug report for actions.github.com API group
+title: "<Please write what didn't work for you here>"
+labels: ["bug", "needs triage", "gha-runner-scale-set"]
+body:
+- type: checkboxes
+  id: read-troubleshooting-guide
+  attributes:
+    label: Checks
+    description: Please check all the boxes below before submitting
+    options:
+    - label: I've already read https://docs.github.com/en/actions/hosting-your-own-runners/managing-self-hosted-runners-with-actions-runner-controller/troubleshooting-actions-runner-controller-errors and I'm sure my issue is not covered in the troubleshooting guide.
+      required: true
+
+    - label: I am using charts that are officially provided
+- type: input
+  id: controller-version
+  attributes:
+    label: Controller Version
+    description: Refers to semver-like release tags for controller versions. Any release tags prefixed with `gha-runner-scale-set-` are releases associated with this API group
+    placeholder: ex. 0.6.1
+  validations:
+    required: true
+- type: dropdown
+  id: deployment-method
+  attributes:
+    label: Deployment Method
+    description: Which deployment method did you use to install ARC?
+    options:
+      - Helm
+      - Kustomize
+      - ArgoCD
+      - Other
+  validations:
+    required: true
+- type: checkboxes
+  id: checks
+  attributes:
+    label: Checks
+    description: Please check all the boxes below before submitting
+    options:
+    - label: This isn't a question or user support case (For Q&A and community support, go to [Discussions](https://github.com/actions/actions-runner-controller/discussions)).
+      required: true
+    - label: I've read the [Changelog](https://github.com/actions/actions-runner-controller/blob/master/docs/gha-runner-scale-set-controller/README.md#changelog) before submitting this issue and I'm sure it's not due to any recently-introduced backward-incompatible changes
+      required: true
+- type: textarea
+  id: reproduction-steps
+  attributes:
+    label: To Reproduce
+    description: "Steps to reproduce the behavior"
+    render: markdown
+    placeholder: |
+      1. Go to '...'
+      2. Click on '....'
+      3. Scroll down to '....'
+      4. See error
+  validations:
+    required: true
+- type: textarea
+  id: actual-behavior
+  attributes:
+    label: Describe the bug
+    description: Also tell us, what did happen?
+    placeholder: A clear and concise description of what happened.
+  validations:
+    required: true
+
+- type: textarea
+  id: expected-behavior
+  attributes:
+    label: Describe the expected behavior
+    description: Also tell us, what did you expect to happen?
+    placeholder: A clear and concise description of what the expected behavior is.
+  validations:
+    required: true
+
+- type: textarea
+  id: additional-context
+  attributes:
+    label: Additional Context
+    render: yaml
+    description: |
+      Provide `values.yaml` files that are relevant for this issue. PLEASE REDACT ANY INFORMATION THAT SHOULD NOT BE PUBLICALY AVAILABLE, LIKE GITHUB TOKEN FOR EXAMPLE.
+    placeholder: |
+      PLEASE REDACT ANY INFORMATION THAT SHOULD NOT BE PUBLICALY AVAILABLE, LIKE GITHUB TOKEN FOR EXAMPLE.
+  validations:
+    required: true
+
+- type: textarea
+  id: controller-logs
+  attributes:
+    label: Controller Logs
+    description: "NEVER EVER OMIT THIS! Include complete logs from `actions-runner-controller`'s controller-manager pod."
+    render: shell
+    placeholder: |
+      PROVIDE THE LOGS VIA A GIST LINK (https://gist.github.com/), NOT DIRECTLY IN THIS TEXT AREA
+
+      To grab controller logs:
+
+      kubectl logs -n $NAMESPACE deployments/$CONTROLLER_DEPLOYMENT
+  validations:
+    required: true
+- type: textarea
+  id: runner-pod-logs
+  attributes:
+    label: Runner Pod Logs
+    description: "Include logs and kubectl describe output from runner pod(s)."
+    render: shell
+    placeholder: |
+      PROVIDE THE WHOLE LOGS VIA A GIST LINK (https://gist.github.com/), NOT DIRECTLY IN THIS TEXT AREA
+  validations:
+    required: true
+

.github/ISSUE_TEMPLATE/summerwind_bug_report.yaml

@@ -1,7 +1,7 @@
-name: Bug Report
+name: Bug Report (actions.summerwind.net API group)
-description: File a bug report
+description: File a bug report for actions.summerwind.net API group
 title: "<Please write what didn't work for you here>"
-labels: ["bug", "needs triage"]
+labels: ["bug", "needs triage", "community"]
 body:
 - type: checkboxes
   id: read-troubleshooting-guide
@@ -146,7 +146,7 @@ body:
     render: shell
     placeholder: |
       PROVIDE THE LOGS VIA A GIST LINK (https://gist.github.com/), NOT DIRECTLY IN THIS TEXT AREA
-      
+
       To grab controller logs:
 
       # Set NS according to your setup
@@ -166,7 +166,7 @@ body:
     render: shell
     placeholder: |
       PROVIDE THE WHOLE LOGS VIA A GIST LINK (https://gist.github.com/), NOT DIRECTLY IN THIS TEXT AREA
-      
+
       To grab the runner pod logs:
 
       # Set NS according to your setup. It should match your RunnerDeployment's metadata.namespace.
@@ -177,7 +177,7 @@ body:
 
       kubectl -n $NS logs $POD_NAME -c runner > runnerpod_runner.log
       kubectl -n $NS logs $POD_NAME -c docker > runnerpod_docker.log
-      
+
       If any of the containers are getting terminated immediately, try adding `--previous` to the kubectl-logs command to obtain logs emitted before the termination.
   validations:
     required: true

.github/ISSUE_TEMPLATE/summerwind_feature_request.md

@@ -1,7 +1,7 @@
 ---
-name: Feature request
+name: Feature request (actions.summerwind.net API group)
 about: Suggest an idea for this project
-labels: ["enhancement", "needs triage"]
+labels: ["enhancement", "needs triage", "community"]
 title: ''
 assignees: ''
 ---

.github/actions/execute-assert-arc-e2e/action.yaml

@@ -193,7 +193,7 @@ runs:
       shell: bash
       run: |
         helm uninstall ${{ inputs.arc-name }} --namespace ${{inputs.arc-namespace}} --debug
-        kubectl wait --timeout=10s --for=delete AutoScalingRunnerSet -n ${{inputs.arc-name}} -l app.kubernetes.io/instance=${{ inputs.arc-name }}
+        kubectl wait --timeout=30s --for=delete AutoScalingRunnerSet -n ${{inputs.arc-namespace}} -l app.kubernetes.io/instance=${{ inputs.arc-name }}
 
     - name: Gather logs and cleanup
       shell: bash

.github/workflows/arc-publish-chart.yaml

@@ -63,14 +63,14 @@ jobs:
         python-version: '3.11'
 
     - name: Set up chart-testing
-      uses: helm/chart-testing-action@v2.3.1
+      uses: helm/chart-testing-action@v2.6.0
 
     - name: Run chart-testing (list-changed)
       id: list-changed
       run: |
         changed=$(ct list-changed --config charts/.ci/ct-config.yaml)
         if [[ -n "$changed" ]]; then
-          echo "::set-output name=changed::true"
+          echo "changed=true" >> $GITHUB_OUTPUT
         fi
 
     - name: Run chart-testing (lint)

.github/workflows/arc-publish.yaml

@@ -18,7 +18,7 @@ on:
         default: false
 
 permissions:
- contents: write 
+ contents: write
  packages: write
 
 env:
@@ -34,16 +34,16 @@ jobs:
     name: Release
     runs-on: ubuntu-latest
     # gha-runner-scale-set has its own release workflow.
-    # We don't want to publish a new actions-runner-controller image 
+    # We don't want to publish a new actions-runner-controller image
     # we release gha-runner-scale-set.
     if: ${{ !startsWith(github.event.inputs.release_tag_name, 'gha-runner-scale-set-') }}
     steps:
       - name: Checkout
         uses: actions/checkout@v3
 
-      - uses: actions/setup-go@v3
+      - uses: actions/setup-go@v4
         with:
-          go-version: '1.18.2'
+          go-version-file: 'go.mod'
 
       - name: Install tools
         run: |

.github/workflows/arc-release-runners.yaml

@@ -17,7 +17,7 @@ env:
   PUSH_TO_REGISTRIES: true
   TARGET_ORG: actions-runner-controller
   TARGET_WORKFLOW: release-runners.yaml
-  DOCKER_VERSION: 20.10.23
+  DOCKER_VERSION: 24.0.7
 
 concurrency:
   group: ${{ github.workflow }}

.github/workflows/arc-update-runners-scheduled.yaml

@@ -78,7 +78,7 @@ jobs:
         run: |
           RUNNER_MESSAGE="runner to v${RUNNER_LATEST_VERSION}"
           CONTAINER_HOOKS_MESSAGE="container-hooks to v${CONTAINER_HOOKS_LATEST_VERSION}"
-          
+
           PR_NAME="Updates:"
           if [ "$RUNNER_CURRENT_VERSION" != "$RUNNER_LATEST_VERSION" ]
           then
@@ -88,7 +88,7 @@ jobs:
           then
             PR_NAME="$PR_NAME $CONTAINER_HOOKS_MESSAGE"
           fi
-          
+
           result=$(gh pr list --search "$PR_NAME" --json number --jq ".[].number" --limit 1)
           if [ -z "$result" ]
           then
@@ -120,21 +120,25 @@ jobs:
 
     steps:
       - uses: actions/checkout@v3
-      
+
       - name: New branch
         run: git checkout -b update-runner-"$(date +%Y-%m-%d)"
-      
+
       - name: Update files
         run: |
-          sed -i "s/$RUNNER_CURRENT_VERSION/$RUNNER_LATEST_VERSION/g" runner/VERSION
+          CURRENT_VERSION="${RUNNER_CURRENT_VERSION//./\\.}"
-          sed -i "s/$RUNNER_CURRENT_VERSION/$RUNNER_LATEST_VERSION/g" runner/Makefile
+          LATEST_VERSION="${RUNNER_LATEST_VERSION//./\\.}"
-          sed -i "s/$RUNNER_CURRENT_VERSION/$RUNNER_LATEST_VERSION/g" Makefile
+          sed -i "s/$CURRENT_VERSION/$LATEST_VERSION/g" runner/VERSION
-          sed -i "s/$RUNNER_CURRENT_VERSION/$RUNNER_LATEST_VERSION/g" test/e2e/e2e_test.go
+          sed -i "s/$CURRENT_VERSION/$LATEST_VERSION/g" runner/Makefile
-          
+          sed -i "s/$CURRENT_VERSION/$LATEST_VERSION/g" Makefile
-          sed -i "s/$CONTAINER_HOOKS_CURRENT_VERSION/$CONTAINER_HOOKS_LATEST_VERSION/g" runner/VERSION
+          sed -i "s/$CURRENT_VERSION/$LATEST_VERSION/g" test/e2e/e2e_test.go
-          sed -i "s/$CONTAINER_HOOKS_CURRENT_VERSION/$CONTAINER_HOOKS_LATEST_VERSION/g" runner/Makefile
+
-          sed -i "s/$CONTAINER_HOOKS_CURRENT_VERSION/$CONTAINER_HOOKS_LATEST_VERSION/g" Makefile
+          CURRENT_VERSION="${CONTAINER_HOOKS_CURRENT_VERSION//./\\.}"
-          sed -i "s/$CONTAINER_HOOKS_CURRENT_VERSION/$CONTAINER_HOOKS_LATEST_VERSION/g" test/e2e/e2e_test.go
+          LATEST_VERSION="${CONTAINER_HOOKS_LATEST_VERSION//./\\.}"
+          sed -i "s/$CURRENT_VERSION/$LATEST_VERSION/g" runner/VERSION
+          sed -i "s/$CURRENT_VERSION/$LATEST_VERSION/g" runner/Makefile
+          sed -i "s/$CURRENT_VERSION/$LATEST_VERSION/g" Makefile
+          sed -i "s/$CURRENT_VERSION/$LATEST_VERSION/g" test/e2e/e2e_test.go
 
       - name: Commit changes
         run: |

.github/workflows/arc-validate-chart.yaml

@@ -28,7 +28,7 @@ permissions:
   contents: read
 
 concurrency:
-  # This will make sure we only apply the concurrency limits on pull requests 
+  # This will make sure we only apply the concurrency limits on pull requests
   # but not pushes to master branch by making the concurrency group name unique
   # for pushes
   group: ${{ github.workflow }}-${{ github.head_ref || github.run_id }}
@@ -69,17 +69,17 @@ jobs:
       # python is a requirement for the chart-testing action below (supports yamllint among other tests)
       - uses: actions/setup-python@v4
         with:
-          python-version: '3.7'
+          python-version: '3.11'
 
       - name: Set up chart-testing
-        uses: helm/chart-testing-action@v2.4.0
+        uses: helm/chart-testing-action@v2.6.0
 
       - name: Run chart-testing (list-changed)
         id: list-changed
         run: |
           changed=$(ct list-changed --config charts/.ci/ct-config.yaml)
           if [[ -n "$changed" ]]; then
-            echo "::set-output name=changed::true"
+            echo "changed=true" >> $GITHUB_OUTPUT
           fi
 
       - name: Run chart-testing (lint)

.github/workflows/gha-e2e-tests.yaml

@@ -16,7 +16,7 @@ env:
   TARGET_ORG: actions-runner-controller
   TARGET_REPO: arc_e2e_test_dummy
   IMAGE_NAME: "arc-test-image"
-  IMAGE_VERSION: "0.5.0"
+  IMAGE_VERSION: "0.9.2"
 
 concurrency:
   # This will make sure we only apply the concurrency limits on pull requests
@@ -880,3 +880,98 @@ jobs:
           helm uninstall "${{ steps.install_arc.outputs.ARC_NAME }}" --namespace "arc-runners" --debug
           kubectl wait --timeout=10s --for=delete AutoScalingRunnerSet -n "${{ steps.install_arc.outputs.ARC_NAME }}" -l app.kubernetes.io/instance="${{ steps.install_arc.outputs.ARC_NAME }}"
           kubectl logs deployment/arc-gha-rs-controller -n "arc-systems"
+
+  init-with-min-runners:
+    runs-on: ubuntu-latest
+    timeout-minutes: 20
+    if: github.event_name != 'pull_request' || github.event.pull_request.head.repo.id == github.repository_id
+    env:
+      WORKFLOW_FILE: arc-test-workflow.yaml
+    steps:
+      - uses: actions/checkout@v3
+        with:
+          ref: ${{ github.head_ref }}
+
+      - uses: ./.github/actions/setup-arc-e2e
+        id: setup
+        with:
+          app-id: ${{secrets.E2E_TESTS_ACCESS_APP_ID}}
+          app-pk: ${{secrets.E2E_TESTS_ACCESS_PK}}
+          image-name: ${{env.IMAGE_NAME}}
+          image-tag: ${{env.IMAGE_VERSION}}
+          target-org: ${{env.TARGET_ORG}}
+
+      - name: Install gha-runner-scale-set-controller
+        id: install_arc_controller
+        run: |
+          helm install arc \
+          --namespace "arc-systems" \
+          --create-namespace \
+          --set image.repository=${{ env.IMAGE_NAME }} \
+          --set image.tag=${{ env.IMAGE_VERSION }} \
+          --set flags.updateStrategy="eventual" \
+          ./charts/gha-runner-scale-set-controller \
+          --debug
+          count=0
+          while true; do
+            POD_NAME=$(kubectl get pods -n arc-systems -l app.kubernetes.io/name=gha-rs-controller -o name)
+            if [ -n "$POD_NAME" ]; then
+              echo "Pod found: $POD_NAME"
+              break
+            fi
+            if [ "$count" -ge 60 ]; then
+              echo "Timeout waiting for controller pod with label app.kubernetes.io/name=gha-rs-controller"
+              exit 1
+            fi
+            sleep 1
+            count=$((count+1))
+          done
+          kubectl wait --timeout=30s --for=condition=ready pod -n arc-systems -l app.kubernetes.io/name=gha-rs-controller
+          kubectl get pod -n arc-systems
+          kubectl describe deployment arc-gha-rs-controller -n arc-systems
+
+      - name: Install gha-runner-scale-set
+        id: install_arc
+        run: |
+          ARC_NAME=${{github.job}}-$(date +'%M%S')$((($RANDOM + 100) % 100 + 1))
+          helm install "$ARC_NAME" \
+          --namespace "arc-runners" \
+          --create-namespace \
+          --set githubConfigUrl="https://github.com/${{ env.TARGET_ORG }}/${{env.TARGET_REPO}}" \
+          --set githubConfigSecret.github_token="${{ steps.setup.outputs.token }}" \
+          --set minRunners=5 \
+          ./charts/gha-runner-scale-set \
+          --debug
+          echo "ARC_NAME=$ARC_NAME" >> $GITHUB_OUTPUT
+          count=0
+          while true; do
+            POD_NAME=$(kubectl get pods -n arc-systems -l actions.github.com/scale-set-name=$ARC_NAME -o name)
+            if [ -n "$POD_NAME" ]; then
+              echo "Pod found: $POD_NAME"
+              break
+            fi
+            if [ "$count" -ge 60 ]; then
+              echo "Timeout waiting for listener pod with label actions.github.com/scale-set-name=$ARC_NAME"
+              exit 1
+            fi
+            sleep 1
+            count=$((count+1))
+          done
+          kubectl wait --timeout=30s --for=condition=ready pod -n arc-systems -l actions.github.com/scale-set-name=$ARC_NAME
+          kubectl get pod -n arc-systems
+      - name: Ensure 5 runners are up
+        run: |
+          count=0
+          while true; do
+            pod_count=$(kubectl get pods -n arc-runners --no-headers | wc -l)
+            if [[ "$pod_count" = 5 ]]; then
+              echo "5 pods are up!"
+              break
+            fi
+            if [[ "$count" -ge 12 ]]; then
+              echo "Timeout waiting for 5 pods to be created"
+              exit 1
+            fi
+            sleep 1
+            count=$((count+1))
+          done

.github/workflows/gha-validate-chart.yaml

@@ -24,7 +24,7 @@ permissions:
   contents: read
 
 concurrency:
-  # This will make sure we only apply the concurrency limits on pull requests 
+  # This will make sure we only apply the concurrency limits on pull requests
   # but not pushes to master branch by making the concurrency group name unique
   # for pushes
   group: ${{ github.workflow }}-${{ github.head_ref || github.run_id }}
@@ -65,10 +65,10 @@ jobs:
       # python is a requirement for the chart-testing action below (supports yamllint among other tests)
       - uses: actions/setup-python@v4
         with:
-          python-version: '3.7'
+          python-version: '3.11'
 
       - name: Set up chart-testing
-        uses: helm/chart-testing-action@v2.4.0
+        uses: helm/chart-testing-action@v2.6.0
 
       - name: Run chart-testing (list-changed)
         id: list-changed
@@ -76,7 +76,7 @@ jobs:
           ct version
           changed=$(ct list-changed --config charts/.ci/ct-config-gha.yaml)
           if [[ -n "$changed" ]]; then
-            echo "::set-output name=changed::true"
+            echo "changed=true" >> $GITHUB_OUTPUT
           fi
 
       - name: Run chart-testing (lint)

.github/workflows/global-publish-canary.yaml

@@ -91,7 +91,7 @@ jobs:
     steps:
       - name: Checkout
         uses: actions/checkout@v3
-      
+
       - name: Login to GitHub Container Registry
         uses: docker/login-action@v2
         with:
@@ -101,14 +101,14 @@ jobs:
 
       # Normalization is needed because upper case characters are not allowed in the repository name
       # and the short sha is needed for image tagging
-      - name: Resolve parameters 
+      - name: Resolve parameters
         id: resolve_parameters
         run: |
           echo "INFO: Resolving short sha"
           echo "short_sha=$(git rev-parse --short ${{ github.ref }})" >> $GITHUB_OUTPUT
           echo "INFO: Normalizing repository name (lowercase)"
           echo "repository_owner=$(echo ${{ github.repository_owner }} | tr '[:upper:]' '[:lower:]')" >> $GITHUB_OUTPUT
-      
+
       - name: Set up QEMU
         uses: docker/setup-qemu-action@v2
 
@@ -124,7 +124,7 @@ jobs:
           context: .
           file: ./Dockerfile
           platforms: linux/amd64,linux/arm64
-          build-args: VERSION=canary-"${{ github.ref }}"
+          build-args: VERSION=canary-${{ steps.resolve_parameters.outputs.short_sha }}
           push: ${{ env.PUSH_TO_REGISTRIES }}
           tags: |
             ghcr.io/${{ steps.resolve_parameters.outputs.repository_owner }}/gha-runner-scale-set-controller:canary

.github/workflows/global-run-codeql.yaml

@@ -2,7 +2,7 @@ name: Run CodeQL
 
 on:
   push:
-    branches: 
+    branches:
       - master
   pull_request:
     branches:
@@ -11,7 +11,7 @@ on:
     - cron: '30 1 * * 0'
 
 concurrency:
-  # This will make sure we only apply the concurrency limits on pull requests 
+  # This will make sure we only apply the concurrency limits on pull requests
   # but not pushes to master branch by making the concurrency group name unique
   # for pushes
   group: ${{ github.workflow }}-${{ github.head_ref || github.run_id }}
@@ -27,6 +27,11 @@ jobs:
       - name: Checkout repository
         uses: actions/checkout@v3
 
+      - name: Install Go
+        uses: actions/setup-go@v4
+        with:
+          go-version-file: go.mod
+
       - name: Initialize CodeQL
         uses: github/codeql-action/init@v2
         with:

.github/workflows/go.yaml

@@ -19,7 +19,7 @@ permissions:
   contents: read
 
 concurrency:
-  # This will make sure we only apply the concurrency limits on pull requests 
+  # This will make sure we only apply the concurrency limits on pull requests
   # but not pushes to master branch by making the concurrency group name unique
   # for pushes
   group: ${{ github.workflow }}-${{ github.head_ref || github.run_id }}
@@ -51,7 +51,7 @@ jobs:
         uses: golangci/golangci-lint-action@v3
         with:
           only-new-issues: true
-          version: v1.51.1
+          version: v1.55.2
 
   generate:
     runs-on: ubuntu-latest

.golangci.yaml

@@ -1,7 +1,9 @@
 run:
   timeout: 3m
 output:
-  format: github-actions
+  formats:
+    - format: github-actions
+      path: stdout
 linters-settings:
   errcheck:
     exclude-functions:

CODEOWNERS

@@ -1,2 +1,2 @@
 # actions-runner-controller maintainers
-* @mumoshu @toast-gear @actions/actions-runtime @nikola-jokic
+* @mumoshu @toast-gear @actions/actions-launch @nikola-jokic @rentziass

CONTRIBUTING.md

@@ -73,7 +73,7 @@ To make your development cycle faster, use the below command to update deploy an
 # Makefile
 VERSION=controller1 \
   RUNNER_TAG=runner1 \
-  make acceptance/pull acceptance/kind docker-build acceptance/load acceptance/deploy
+  make acceptance/pull acceptance/kind docker-buildx acceptance/load acceptance/deploy
 ```
 
 If you've already deployed actions-runner-controller and only want to recreate pods to use the newer image, you can run:

Dockerfile

@@ -1,5 +1,5 @@
 # Build the manager binary
-FROM --platform=$BUILDPLATFORM golang:1.20.7 as builder
+FROM --platform=$BUILDPLATFORM golang:1.22.1 as builder
 
 WORKDIR /workspace
 
@@ -24,7 +24,7 @@ RUN go mod download
 # With the above commmand,
 # TARGETOS can be "linux", TARGETARCH can be "amd64", "arm64", and "arm", TARGETVARIANT can be "v7".
 
-ARG TARGETPLATFORM TARGETOS TARGETARCH TARGETVARIANT VERSION=dev
+ARG TARGETPLATFORM TARGETOS TARGETARCH TARGETVARIANT VERSION=dev COMMIT_SHA=dev
 
 # We intentionally avoid `--mount=type=cache,mode=0777,target=/go/pkg/mod` in the `go mod download` and the `go build` runs
 # to avoid https://github.com/moby/buildkit/issues/2334
@@ -36,8 +36,9 @@ ENV GOCACHE /build/${TARGETPLATFORM}/root/.cache/go-build
 RUN --mount=target=. \
   --mount=type=cache,mode=0777,target=${GOCACHE} \
   export GOOS=${TARGETOS} GOARCH=${TARGETARCH} GOARM=${TARGETVARIANT#v} && \
-  go build -trimpath -ldflags="-s -w -X 'github.com/actions/actions-runner-controller/build.Version=${VERSION}'" -o /out/manager main.go && \
+  go build -trimpath -ldflags="-s -w -X 'github.com/actions/actions-runner-controller/build.Version=${VERSION}' -X 'github.com/actions/actions-runner-controller/build.CommitSHA=${COMMIT_SHA}'" -o /out/manager main.go && \
-  go build -trimpath -ldflags="-s -w" -o /out/github-runnerscaleset-listener ./cmd/githubrunnerscalesetlistener && \
+  go build -trimpath -ldflags="-s -w -X 'github.com/actions/actions-runner-controller/build.Version=${VERSION}' -X 'github.com/actions/actions-runner-controller/build.CommitSHA=${COMMIT_SHA}'" -o /out/github-runnerscaleset-listener ./cmd/githubrunnerscalesetlistener && \
+  go build -trimpath -ldflags="-s -w -X 'github.com/actions/actions-runner-controller/build.Version=${VERSION}' -X 'github.com/actions/actions-runner-controller/build.CommitSHA=${COMMIT_SHA}'" -o /out/ghalistener ./cmd/ghalistener && \
   go build -trimpath -ldflags="-s -w" -o /out/github-webhook-server ./cmd/githubwebhookserver && \
   go build -trimpath -ldflags="-s -w" -o /out/actions-metrics-server ./cmd/actionsmetricsserver && \
   go build -trimpath -ldflags="-s -w" -o /out/sleep ./cmd/sleep
@@ -52,6 +53,7 @@ COPY --from=builder /out/manager .
 COPY --from=builder /out/github-webhook-server .
 COPY --from=builder /out/actions-metrics-server .
 COPY --from=builder /out/github-runnerscaleset-listener .
+COPY --from=builder /out/ghalistener .
 COPY --from=builder /out/sleep .
 
 USER 65532:65532

Makefile

@@ -5,7 +5,8 @@ else
 endif
 DOCKER_USER ?= $(shell echo ${DOCKER_IMAGE_NAME} | cut -d / -f1)
 VERSION ?= dev
-RUNNER_VERSION ?= 2.308.0
+COMMIT_SHA = $(shell git rev-parse HEAD)
+RUNNER_VERSION ?= 2.316.1
 TARGETPLATFORM ?= $(shell arch)
 RUNNER_NAME ?= ${DOCKER_USER}/actions-runner
 RUNNER_TAG  ?= ${VERSION}
@@ -67,7 +68,7 @@ endif
 all: manager
 
 lint:
-	docker run --rm -v $(PWD):/app -w /app golangci/golangci-lint:v1.49.0 golangci-lint run
+	docker run --rm -v $(PWD):/app -w /app golangci/golangci-lint:v1.57.2 golangci-lint run
 
 GO_TEST_ARGS ?= -short
 
@@ -215,6 +216,7 @@ docker-buildx:
 		--build-arg RUNNER_VERSION=${RUNNER_VERSION} \
 		--build-arg DOCKER_VERSION=${DOCKER_VERSION} \
 		--build-arg VERSION=${VERSION} \
+		--build-arg COMMIT_SHA=${COMMIT_SHA} \
 		-t "${DOCKER_IMAGE_NAME}:${VERSION}" \
 		-f Dockerfile \
 		. ${PUSH_ARG}
@@ -318,7 +320,7 @@ ifeq (, $(wildcard $(GOBIN)/controller-gen))
 	CONTROLLER_GEN_TMP_DIR=$$(mktemp -d) ;\
 	cd $$CONTROLLER_GEN_TMP_DIR ;\
 	go mod init tmp ;\
-	go install sigs.k8s.io/controller-tools/cmd/controller-gen@v0.7.0 ;\
+	go install sigs.k8s.io/controller-tools/cmd/controller-gen@v0.14.0 ;\
 	rm -rf $$CONTROLLER_GEN_TMP_DIR ;\
 	}
 endif

apis/actions.github.com/v1alpha1/autoscalinglistener_types.go

@@ -52,9 +52,6 @@ type AutoscalingListenerSpec struct {
 	// Required
 	Image string `json:"image,omitempty"`
 
-	// Required
-	ImagePullPolicy corev1.PullPolicy `json:"imagePullPolicy,omitempty"`
-
 	// Required
 	ImagePullSecrets []corev1.LocalObjectReference `json:"imagePullSecrets,omitempty"`
 
@@ -63,6 +60,9 @@ type AutoscalingListenerSpec struct {
 
 	// +optional
 	GitHubServerTLS *GitHubServerTLSConfig `json:"githubServerTLS,omitempty"`
+
+	// +optional
+	Template *corev1.PodTemplateSpec `json:"template,omitempty"`
 }
 
 // AutoscalingListenerStatus defines the observed state of AutoscalingListener

apis/actions.github.com/v1alpha1/autoscalingrunnerset_types.go

@@ -74,6 +74,9 @@ type AutoscalingRunnerSetSpec struct {
 	// Required
 	Template corev1.PodTemplateSpec `json:"template,omitempty"`
 
+	// +optional
+	ListenerTemplate *corev1.PodTemplateSpec `json:"listenerTemplate,omitempty"`
+
 	// +optional
 	// +kubebuilder:validation:Minimum:=0
 	MaxRunners *int `json:"maxRunners,omitempty"`

apis/actions.github.com/v1alpha1/ephemeralrunner_types.go

@@ -42,6 +42,10 @@ type EphemeralRunner struct {
 	Status EphemeralRunnerStatus `json:"status,omitempty"`
 }
 
+func (er *EphemeralRunner) IsDone() bool {
+	return er.Status.Phase == corev1.PodSucceeded || er.Status.Phase == corev1.PodFailed
+}
+
 // EphemeralRunnerSpec defines the desired state of EphemeralRunner
 type EphemeralRunnerSpec struct {
 	// INSERT ADDITIONAL SPEC FIELDS - desired state of cluster

apis/actions.github.com/v1alpha1/ephemeralrunnerset_types.go

@@ -24,6 +24,8 @@ import (
 type EphemeralRunnerSetSpec struct {
 	// Replicas is the number of desired EphemeralRunner resources in the k8s namespace.
 	Replicas int `json:"replicas,omitempty"`
+	// PatchID is the unique identifier for the patch issued by the listener app
+	PatchID int `json:"patchID"`
 
 	EphemeralRunnerSpec EphemeralRunnerSpec `json:"ephemeralRunnerSpec,omitempty"`
 }

apis/actions.github.com/v1alpha1/zz_generated.deepcopy.go

@@ -1,5 +1,4 @@
 //go:build !ignore_autogenerated
-// +build !ignore_autogenerated
 
 /*
 Copyright 2020 The actions-runner-controller authors.
@@ -103,6 +102,11 @@ func (in *AutoscalingListenerSpec) DeepCopyInto(out *AutoscalingListenerSpec) {
 		*out = new(GitHubServerTLSConfig)
 		(*in).DeepCopyInto(*out)
 	}
+	if in.Template != nil {
+		in, out := &in.Template, &out.Template
+		*out = new(v1.PodTemplateSpec)
+		(*in).DeepCopyInto(*out)
+	}
 }
 
 // DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new AutoscalingListenerSpec.
@@ -203,6 +207,11 @@ func (in *AutoscalingRunnerSetSpec) DeepCopyInto(out *AutoscalingRunnerSetSpec)
 		(*in).DeepCopyInto(*out)
 	}
 	in.Template.DeepCopyInto(&out.Template)
+	if in.ListenerTemplate != nil {
+		in, out := &in.ListenerTemplate, &out.ListenerTemplate
+		*out = new(v1.PodTemplateSpec)
+		(*in).DeepCopyInto(*out)
+	}
 	if in.MaxRunners != nil {
 		in, out := &in.MaxRunners, &out.MaxRunners
 		*out = new(int)

apis/actions.summerwind.net/v1alpha1/runner_webhook.go

@@ -23,6 +23,7 @@ import (
 	ctrl "sigs.k8s.io/controller-runtime"
 	logf "sigs.k8s.io/controller-runtime/pkg/log"
 	"sigs.k8s.io/controller-runtime/pkg/webhook"
+	"sigs.k8s.io/controller-runtime/pkg/webhook/admission"
 )
 
 // log is for logging in this package.
@@ -48,20 +49,20 @@ func (r *Runner) Default() {
 var _ webhook.Validator = &Runner{}
 
 // ValidateCreate implements webhook.Validator so a webhook will be registered for the type
-func (r *Runner) ValidateCreate() error {
+func (r *Runner) ValidateCreate() (admission.Warnings, error) {
 	runnerLog.Info("validate resource to be created", "name", r.Name)
-	return r.Validate()
+	return nil, r.Validate()
 }
 
 // ValidateUpdate implements webhook.Validator so a webhook will be registered for the type
-func (r *Runner) ValidateUpdate(old runtime.Object) error {
+func (r *Runner) ValidateUpdate(old runtime.Object) (admission.Warnings, error) {
 	runnerLog.Info("validate resource to be updated", "name", r.Name)
-	return r.Validate()
+	return nil, r.Validate()
 }
 
 // ValidateDelete implements webhook.Validator so a webhook will be registered for the type
-func (r *Runner) ValidateDelete() error {
+func (r *Runner) ValidateDelete() (admission.Warnings, error) {
-	return nil
+	return nil, nil
 }
 
 // Validate validates resource spec.

apis/actions.summerwind.net/v1alpha1/runnerdeployment_webhook.go

@@ -23,6 +23,7 @@ import (
 	ctrl "sigs.k8s.io/controller-runtime"
 	logf "sigs.k8s.io/controller-runtime/pkg/log"
 	"sigs.k8s.io/controller-runtime/pkg/webhook"
+	"sigs.k8s.io/controller-runtime/pkg/webhook/admission"
 )
 
 // log is for logging in this package.
@@ -48,20 +49,20 @@ func (r *RunnerDeployment) Default() {
 var _ webhook.Validator = &RunnerDeployment{}
 
 // ValidateCreate implements webhook.Validator so a webhook will be registered for the type
-func (r *RunnerDeployment) ValidateCreate() error {
+func (r *RunnerDeployment) ValidateCreate() (admission.Warnings, error) {
 	runnerDeploymentLog.Info("validate resource to be created", "name", r.Name)
-	return r.Validate()
+	return nil, r.Validate()
 }
 
 // ValidateUpdate implements webhook.Validator so a webhook will be registered for the type
-func (r *RunnerDeployment) ValidateUpdate(old runtime.Object) error {
+func (r *RunnerDeployment) ValidateUpdate(old runtime.Object) (admission.Warnings, error) {
 	runnerDeploymentLog.Info("validate resource to be updated", "name", r.Name)
-	return r.Validate()
+	return nil, r.Validate()
 }
 
 // ValidateDelete implements webhook.Validator so a webhook will be registered for the type
-func (r *RunnerDeployment) ValidateDelete() error {
+func (r *RunnerDeployment) ValidateDelete() (admission.Warnings, error) {
-	return nil
+	return nil, nil
 }
 
 // Validate validates resource spec.

apis/actions.summerwind.net/v1alpha1/runnerreplicaset_webhook.go

@@ -23,6 +23,7 @@ import (
 	ctrl "sigs.k8s.io/controller-runtime"
 	logf "sigs.k8s.io/controller-runtime/pkg/log"
 	"sigs.k8s.io/controller-runtime/pkg/webhook"
+	"sigs.k8s.io/controller-runtime/pkg/webhook/admission"
 )
 
 // log is for logging in this package.
@@ -48,20 +49,20 @@ func (r *RunnerReplicaSet) Default() {
 var _ webhook.Validator = &RunnerReplicaSet{}
 
 // ValidateCreate implements webhook.Validator so a webhook will be registered for the type
-func (r *RunnerReplicaSet) ValidateCreate() error {
+func (r *RunnerReplicaSet) ValidateCreate() (admission.Warnings, error) {
 	runnerReplicaSetLog.Info("validate resource to be created", "name", r.Name)
-	return r.Validate()
+	return nil, r.Validate()
 }
 
 // ValidateUpdate implements webhook.Validator so a webhook will be registered for the type
-func (r *RunnerReplicaSet) ValidateUpdate(old runtime.Object) error {
+func (r *RunnerReplicaSet) ValidateUpdate(old runtime.Object) (admission.Warnings, error) {
 	runnerReplicaSetLog.Info("validate resource to be updated", "name", r.Name)
-	return r.Validate()
+	return nil, r.Validate()
 }
 
 // ValidateDelete implements webhook.Validator so a webhook will be registered for the type
-func (r *RunnerReplicaSet) ValidateDelete() error {
+func (r *RunnerReplicaSet) ValidateDelete() (admission.Warnings, error) {
-	return nil
+	return nil, nil
 }
 
 // Validate validates resource spec.

apis/actions.summerwind.net/v1alpha1/zz_generated.deepcopy.go

@@ -1,5 +1,4 @@
 //go:build !ignore_autogenerated
-// +build !ignore_autogenerated
 
 /*
 Copyright 2020 The actions-runner-controller authors.

build/version.go

@@ -2,3 +2,5 @@ package build
 
 // This is overridden at build-time using go-build ldflags. dev is the fallback value
 var Version = "NA"
+
+var CommitSHA = "NA"

charts/actions-runner-controller/Chart.yaml

@@ -15,10 +15,10 @@ type: application
 # This is the chart version. This version number should be incremented each time you make changes
 # to the chart and its templates, including the app version.
 # Versions are expected to follow Semantic Versioning (https://semver.org/)
-version: 0.23.4
+version: 0.23.7
 
 # Used as the default manager tag value when no tag property is provided in the values.yaml
-appVersion: 0.27.4
+appVersion: 0.27.6
 
 home: https://github.com/actions/actions-runner-controller
 

charts/actions-runner-controller/README.md

@@ -8,154 +8,156 @@ All additional docs are kept in the `docs/` folder, this README is solely for do
 
 > _Default values are the defaults set in the charts `values.yaml`, some properties have default configurations in the code for when the property is omitted or invalid_
 
-| Key                                                      | Description                                                                                                                               | Default                                                                                         |
+| Key                                                       | Description                                                                                                                               | Default                                                                                         |
-|----------------------------------------------------------|-------------------------------------------------------------------------------------------------------------------------------------------|-------------------------------------------------------------------------------------------------|
+|-----------------------------------------------------------|-------------------------------------------------------------------------------------------------------------------------------------------|-------------------------------------------------------------------------------------------------|
-| `labels`                                                 | Set labels to apply to all resources in the chart                                                                                         |                                                                                                 |
+| `labels`                                                  | Set labels to apply to all resources in the chart                                                                                         |                                                                                                 |
-| `replicaCount`                                           | Set the number of controller pods                                                                                                         | 1                                                                                               |
+| `replicaCount`                                            | Set the number of controller pods                                                                                                         | 1                                                                                               |
-| `webhookPort`                                            | Set the containerPort for the webhook Pod                                                                                                 | 9443                                                                                            |
+| `webhookPort`                                             | Set the containerPort for the webhook Pod                                                                                                 | 9443                                                                                            |
-| `syncPeriod`                                             | Set the period in which the controller reconciles the desired runners count                                                               | 1m                                                                                              |
+| `syncPeriod`                                              | Set the period in which the controller reconciles the desired runners count                                                               | 1m                                                                                              |
-| `enableLeaderElection`                                   | Enable election configuration                                                                                                             | true                                                                                            |
+| `enableLeaderElection`                                    | Enable election configuration                                                                                                             | true                                                                                            |
-| `leaderElectionId`                                       | Set the election ID for the controller group                                                                                              |                                                                                                 |
+| `leaderElectionId`                                        | Set the election ID for the controller group                                                                                              |                                                                                                 |
-| `githubEnterpriseServerURL`                              | Set the URL for a self-hosted GitHub Enterprise Server                                                                                    |                                                                                                 |
+| `githubEnterpriseServerURL`                               | Set the URL for a self-hosted GitHub Enterprise Server                                                                                    |                                                                                                 |
-| `githubURL`                                              | Override GitHub URL to be used for GitHub API calls                                                                                       |                                                                                                 |
+| `githubURL`                                               | Override GitHub URL to be used for GitHub API calls                                                                                       |                                                                                                 |
-| `githubUploadURL`                                        | Override GitHub Upload URL to be used for GitHub API calls                                                                                |                                                                                                 |
+| `githubUploadURL`                                         | Override GitHub Upload URL to be used for GitHub API calls                                                                                |                                                                                                 |
-| `runnerGithubURL`                                        | Override GitHub URL to be used by runners during registration                                                                             |                                                                                                 |
+| `runnerGithubURL`                                         | Override GitHub URL to be used by runners during registration                                                                             |                                                                                                 |
-| `logLevel`                                               | Set the log level of the controller container                                                                                             |                                                                                                 |
+| `logLevel`                                                | Set the log level of the controller container                                                                                             |                                                                                                 |
-| `logFormat`                                              | Set the log format of the controller. Valid options are "text" and "json"                                                                 | text                                                                                            |
+| `logFormat`                                               | Set the log format of the controller. Valid options are "text" and "json"                                                                 | text                                                                                            |
-| `additionalVolumes`                                      | Set additional volumes to add to the manager container                                                                                    |                                                                                                 |
+| `additionalVolumes`                                       | Set additional volumes to add to the manager container                                                                                    |                                                                                                 |
-| `additionalVolumeMounts`                                 | Set additional volume mounts to add to the manager container                                                                              |                                                                                                 |
+| `additionalVolumeMounts`                                  | Set additional volume mounts to add to the manager container                                                                              |                                                                                                 |
-| `authSecret.create`                                      | Deploy the controller auth secret                                                                                                         | false                                                                                           |
+| `authSecret.create`                                       | Deploy the controller auth secret                                                                                                         | false                                                                                           |
-| `authSecret.name`                                        | Set the name of the auth secret                                                                                                           | controller-manager                                                                              |
+| `authSecret.name`                                         | Set the name of the auth secret                                                                                                           | controller-manager                                                                              |
-| `authSecret.annotations`                                 | Set annotations for the auth Secret                                                                                                       |                                                                                                 |
+| `authSecret.annotations`                                  | Set annotations for the auth Secret                                                                                                       |                                                                                                 |
-| `authSecret.github_app_id`                               | The ID of your GitHub App. **This can't be set at the same time as `authSecret.github_token`**                                            |                                                                                                 |
+| `authSecret.github_app_id`                                | The ID of your GitHub App. **This can't be set at the same time as `authSecret.github_token`**                                            |                                                                                                 |
-| `authSecret.github_app_installation_id`                  | The ID of your GitHub App installation. **This can't be set at the same time as `authSecret.github_token`**                               |                                                                                                 |
+| `authSecret.github_app_installation_id`                   | The ID of your GitHub App installation. **This can't be set at the same time as `authSecret.github_token`**                               |                                                                                                 |
-| `authSecret.github_app_private_key`                      | The multiline string of your GitHub App's private key. **This can't be set at the same time as `authSecret.github_token`**                |                                                                                                 |
+| `authSecret.github_app_private_key`                       | The multiline string of your GitHub App's private key. **This can't be set at the same time as `authSecret.github_token`**                |                                                                                                 |
-| `authSecret.github_token`                                | Your chosen GitHub PAT token. **This can't be set at the same time as the `authSecret.github_app_*`**                                     |                                                                                                 |
+| `authSecret.github_token`                                 | Your chosen GitHub PAT token. **This can't be set at the same time as the `authSecret.github_app_*`**                                     |                                                                                                 |
-| `authSecret.github_basicauth_username`                   | Username for GitHub basic auth to use instead of PAT or GitHub APP in case it's running behind a proxy API                                |                                                                                                 |
+| `authSecret.github_basicauth_username`                    | Username for GitHub basic auth to use instead of PAT or GitHub APP in case it's running behind a proxy API                                |                                                                                                 |
-| `authSecret.github_basicauth_password`                   | Password for GitHub basic auth to use instead of PAT or GitHub APP in case it's running behind a proxy API                                |                                                                                                 |
+| `authSecret.github_basicauth_password`                    | Password for GitHub basic auth to use instead of PAT or GitHub APP in case it's running behind a proxy API                                |                                                                                                 |
-| `dockerRegistryMirror`                                   | The default Docker Registry Mirror used by runners.                                                                                       |                                                                                                 |
+| `dockerRegistryMirror`                                    | The default Docker Registry Mirror used by runners.                                                                                       |                                                                                                 |
-| `hostNetwork`                                            | The "hostNetwork" of the controller container                                                                                             | false                                                                                           |
+| `hostNetwork`                                             | The "hostNetwork" of the controller container                                                                                             | false                                                                                           |
-| `dnsPolicy`                                              | The "dnsPolicy" of the controller container                                                                                               | ClusterFirst                                                                                    |
+| `dnsPolicy`                                               | The "dnsPolicy" of the controller container                                                                                               | ClusterFirst                                                                                    |
-| `image.repository`                                       | The "repository/image" of the controller container                                                                                        | summerwind/actions-runner-controller                                                            |
+| `image.repository`                                        | The "repository/image" of the controller container                                                                                        | summerwind/actions-runner-controller                                                            |
-| `image.tag`                                              | The tag of the controller container                                                                                                       |                                                                                                 |
+| `image.tag`                                               | The tag of the controller container                                                                                                       |                                                                                                 |
-| `image.actionsRunnerRepositoryAndTag`                    | The "repository/image" of the actions runner container                                                                                    | summerwind/actions-runner:latest                                                                |
+| `image.actionsRunnerRepositoryAndTag`                     | The "repository/image" of the actions runner container                                                                                    | summerwind/actions-runner:latest                                                                |
-| `image.actionsRunnerImagePullSecrets`                    | Optional image pull secrets to be included in the runner pod's ImagePullSecrets                                                           |                                                                                                 |
+| `image.actionsRunnerImagePullSecrets`                     | Optional image pull secrets to be included in the runner pod's ImagePullSecrets                                                           |                                                                                                 |
-| `image.dindSidecarRepositoryAndTag`                      | The "repository/image" of the dind sidecar container                                                                                      | docker:dind                                                                                     |
+| `image.dindSidecarRepositoryAndTag`                       | The "repository/image" of the dind sidecar container                                                                                      | docker:dind                                                                                     |
-| `image.pullPolicy`                                       | The pull policy of the controller image                                                                                                   | IfNotPresent                                                                                    |
+| `image.pullPolicy`                                        | The pull policy of the controller image                                                                                                   | IfNotPresent                                                                                    |
-| `metrics.serviceMonitor.enable`                                 | Deploy serviceMonitor kind for for use with prometheus-operator CRDs                                                                      | false                                                                                           |
+| `metrics.serviceMonitor.enable`                           | Deploy serviceMonitor kind for for use with prometheus-operator CRDs                                                                      | false                                                                                           |
-| `metrics.serviceMonitor.interval`                                 | Configure the interval that Prometheus should scrap the controller's metrics                                                                      | 1m                                                                                           |
+| `metrics.serviceMonitor.interval`                         | Configure the interval that Prometheus should scrap the controller's metrics                                                              | 1m                                                                                              |
-| `metrics.serviceMonitor.timeout`                                 | Configure the timeout the timeout of Prometheus scrapping.                                                                      | 30s                                                                                           |
+| `metrics.serviceMonitor.namespace                         | Namespace which Prometheus is running in                                                                                                  | `Release.Namespace` (the default namespace of the helm chart).                                  |
-| `metrics.serviceAnnotations`                             | Set annotations for the provisioned metrics service resource                                                                              |                                                                                                 |
+| `metrics.serviceMonitor.timeout`                          | Configure the timeout the timeout of Prometheus scrapping.                                                                                | 30s                                                                                             |
-| `metrics.port`                                           | Set port of metrics service                                                                                                               | 8443                                                                                            |
+| `metrics.serviceAnnotations`                              | Set annotations for the provisioned metrics service resource                                                                              |                                                                                                 |
-| `metrics.proxy.enabled`                                  | Deploy kube-rbac-proxy container in controller pod                                                                                        | true                                                                                            |
+| `metrics.port`                                            | Set port of metrics service                                                                                                               | 8443                                                                                            |
-| `metrics.proxy.image.repository`                         | The "repository/image" of the kube-proxy container                                                                                        | quay.io/brancz/kube-rbac-proxy                                                                  |
+| `metrics.proxy.enabled`                                   | Deploy kube-rbac-proxy container in controller pod                                                                                        | true                                                                                            |
-| `metrics.proxy.image.tag`                                | The tag of the kube-proxy image to use when pulling the container                                                                         | v0.13.1                                                                                         |
+| `metrics.proxy.image.repository`                          | The "repository/image" of the kube-proxy container                                                                                        | quay.io/brancz/kube-rbac-proxy                                                                  |
-| `metrics.serviceMonitorLabels`                           | Set labels to apply to ServiceMonitor resources                                                                                           |                                                                                                 |
+| `metrics.proxy.image.tag`                                 | The tag of the kube-proxy image to use when pulling the container                                                                         | v0.13.1                                                                                         |
-| `imagePullSecrets`                                       | Specifies the secret to be used when pulling the controller pod containers                                                                |                                                                                                 |
+| `metrics.serviceMonitorLabels`                            | Set labels to apply to ServiceMonitor resources                                                                                           |                                                                                                 |
-| `fullnameOverride`                                       | Override the full resource names	                                                                                                       |                                                                                                 |
+| `imagePullSecrets`                                        | Specifies the secret to be used when pulling the controller pod containers                                                                |                                                                                                 |
-| `nameOverride`                                           | Override the resource name prefix	                                                                                                       |                                                                                                 |
+| `fullnameOverride`                                        | Override the full resource names	                                                                                                        |                                                                                                 |
-| `serviceAccount.annotations`                             | Set annotations to the service account                                                                                                    |                                                                                                 |
+| `nameOverride`                                            | Override the resource name prefix	                                                                                                        |                                                                                                 |
-| `serviceAccount.create`                                  | Deploy the controller pod under a service account                                                                                         | true                                                                                            |
+| `serviceAccount.annotations`                              | Set annotations to the service account                                                                                                    |                                                                                                 |
-| `podAnnotations`                                         | Set annotations for the controller pod                                                                                                    |                                                                                                 |
+| `serviceAccount.create`                                   | Deploy the controller pod under a service account                                                                                         | true                                                                                            |
-| `podLabels`                                              | Set labels for the controller pod                                                                                                         |                                                                                                 |
+| `podAnnotations`                                          | Set annotations for the controller pod                                                                                                    |                                                                                                 |
-| `serviceAccount.name`                                    | Set the name of the service account                                                                                                       |                                                                                                 |
+| `podLabels`                                               | Set labels for the controller pod                                                                                                         |                                                                                                 |
-| `securityContext`                                        | Set the security context for each container in the controller pod                                                                         |                                                                                                 |
+| `serviceAccount.name`                                     | Set the name of the service account                                                                                                       |                                                                                                 |
-| `podSecurityContext`                                     | Set the security context to controller pod                                                                                                |                                                                                                 |
+| `securityContext`                                         | Set the security context for each container in the controller pod                                                                         |                                                                                                 |
-| `service.annotations`                                    | Set annotations for the provisioned webhook service resource                                                                              |                                                                                                 |
+| `podSecurityContext`                                      | Set the security context to controller pod                                                                                                |                                                                                                 |
-| `service.port`                                           | Set controller service ports                                                                                                              |                                                                                                 |
+| `service.annotations`                                     | Set annotations for the provisioned webhook service resource                                                                              |                                                                                                 |
-| `service.type`                                           | Set controller service type                                                                                                               |                                                                                                 |
+| `service.port`                                            | Set controller service ports                                                                                                              |                                                                                                 |
-| `topologySpreadConstraints`                              | Set the controller pod topologySpreadConstraints                                                                                          |                                                                                                 |
+| `service.type`                                            | Set controller service type                                                                                                               |                                                                                                 |
-| `nodeSelector`                                           | Set the controller pod nodeSelector                                                                                                       |                                                                                                 |
+| `topologySpreadConstraints`                               | Set the controller pod topologySpreadConstraints                                                                                          |                                                                                                 |
-| `resources`                                              | Set the controller pod resources                                                                                                          |                                                                                                 |
+| `nodeSelector`                                            | Set the controller pod nodeSelector                                                                                                       |                                                                                                 |
-| `affinity`                                               | Set the controller pod affinity rules                                                                                                     |                                                                                                 |
+| `resources`                                               | Set the controller pod resources                                                                                                          |                                                                                                 |
-| `podDisruptionBudget.enabled`                            | Enables a PDB to ensure HA of controller pods                                                                                             |      false                                                                                      |
+| `affinity`                                                | Set the controller pod affinity rules                                                                                                     |                                                                                                 |
-| `podDisruptionBudget.minAvailable`                       | Minimum number of pods that must be available after eviction                                                                              |                                                                                                 |
+| `podDisruptionBudget.enabled`                             | Enables a PDB to ensure HA of controller pods                                                                                             | false                                                                                      |
-| `podDisruptionBudget.maxUnavailable`                     | Maximum number of pods that can be unavailable after eviction. Kubernetes 1.7+ required.                                                  |                                                                                                 |
+| `podDisruptionBudget.minAvailable`                        | Minimum number of pods that must be available after eviction                                                                              |                                                                                                 |
-| `tolerations`                                            | Set the controller pod tolerations                                                                                                        |                                                                                                 |
+| `podDisruptionBudget.maxUnavailable`                      | Maximum number of pods that can be unavailable after eviction. Kubernetes 1.7+ required.                                                  |                                                                                                 |
-| `env`                                                    | Set environment variables for the controller container                                                                                    |                                                                                                 |
+| `tolerations`                                             | Set the controller pod tolerations                                                                                                        |                                                                                                 |
-| `priorityClassName`                                      | Set the controller pod priorityClassName                                                                                                  |                                                                                                 |
+| `env`                                                     | Set environment variables for the controller container                                                                                    |                                                                                                 |
-| `scope.watchNamespace`                                   | Tells the controller and the github webhook server which namespace to watch if `scope.singleNamespace` is true                            | `Release.Namespace` (the default namespace of the helm chart).                                  |
+| `priorityClassName`                                       | Set the controller pod priorityClassName                                                                                                  |                                                                                                 |
-| `scope.singleNamespace`                                  | Limit the controller to watch a single namespace                                                                                          | false                                                                                           |
+| `scope.watchNamespace`                                    | Tells the controller and the github webhook server which namespace to watch if `scope.singleNamespace` is true                            | `Release.Namespace` (the default namespace of the helm chart).                                  |
-| `certManagerEnabled`                                     | Enable cert-manager. If disabled you must set admissionWebHooks.caBundle and create TLS secrets manually                                  | true                                                                                            |
+| `scope.singleNamespace`                                   | Limit the controller to watch a single namespace                                                                                          | false                                                                                           |
-| `runner.statusUpdateHook.enabled`                        | Use custom RBAC for runners (role, role binding and service account), this will enable reporting runner statuses                          | false                                                                                           |
+| `certManagerEnabled`                                      | Enable cert-manager. If disabled you must set admissionWebHooks.caBundle and create TLS secrets manually                                  | true                                                                                            |
-| `admissionWebHooks.caBundle`                             | Base64-encoded PEM bundle containing the CA that signed the webhook's serving certificate                                                 |                                                                                                 |
+| `runner.statusUpdateHook.enabled`                         | Use custom RBAC for runners (role, role binding and service account), this will enable reporting runner statuses                          | false                                                                                           |
-| `githubWebhookServer.logLevel`                           | Set the log level of the githubWebhookServer container                                                                                    |                                                                                                 |
+| `admissionWebHooks.caBundle`                              | Base64-encoded PEM bundle containing the CA that signed the webhook's serving certificate                                                 |                                                                                                 |
-| `githubWebhookServer.logFormat`                          | Set the log format of the githubWebhookServer controller. Valid options are "text" and "json"                                             | text                                                                                            |
+| `githubWebhookServer.logLevel`                            | Set the log level of the githubWebhookServer container                                                                                    |                                                                                                 |
-| `githubWebhookServer.replicaCount`                       | Set the number of webhook server pods                                                                                                     | 1                                                                                               |
+| `githubWebhookServer.logFormat`                           | Set the log format of the githubWebhookServer controller. Valid options are "text" and "json"                                             | text                                                                                            |
-| `githubWebhookServer.useRunnerGroupsVisibility`          | Enable supporting runner groups with custom visibility, you also need to set `githubWebhookServer.secret.enabled` to enable this feature. | false                                                                                           |
+| `githubWebhookServer.replicaCount`                        | Set the number of webhook server pods                                                                                                     | 1                                                                                               |
-| `githubWebhookServer.enabled`                            | Deploy the webhook server pod                                                                                                             | false                                                                                           |
+| `githubWebhookServer.useRunnerGroupsVisibility`           | Enable supporting runner groups with custom visibility, you also need to set `githubWebhookServer.secret.enabled` to enable this feature. | false                                                                                           |
-| `githubWebhookServer.queueLimit`                         | Set the queue size limit in the githubWebhookServer                                                                                       |                                                                                                 |
+| `githubWebhookServer.enabled`                             | Deploy the webhook server pod                                                                                                             | false                                                                                           |
-| `githubWebhookServer.secret.enabled`                     | Passes the webhook hook secret to the github-webhook-server                                                                               | false                                                                                           |
+| `githubWebhookServer.queueLimit`                          | Set the queue size limit in the githubWebhookServer                                                                                       |                                                                                                 |
-| `githubWebhookServer.secret.create`                      | Deploy the webhook hook secret                                                                                                            | false                                                                                           |
+| `githubWebhookServer.secret.enabled`                      | Passes the webhook hook secret to the github-webhook-server                                                                               | false                                                                                           |
-| `githubWebhookServer.secret.name`                        | Set the name of the webhook hook secret                                                                                                   | github-webhook-server                                                                           |
+| `githubWebhookServer.secret.create`                       | Deploy the webhook hook secret                                                                                                            | false                                                                                           |
-| `githubWebhookServer.secret.github_webhook_secret_token` | Set the webhook secret token value                                                                                                        |                                                                                                 |
+| `githubWebhookServer.secret.name`                         | Set the name of the webhook hook secret                                                                                                   | github-webhook-server                                                                           |
-| `githubWebhookServer.imagePullSecrets`                   | Specifies the secret to be used when pulling the githubWebhookServer pod containers                                                       |                                                                                                 |
+| `githubWebhookServer.secret.github_webhook_secret_token`  | Set the webhook secret token value                                                                                                        |                                                                                                 |
-| `githubWebhookServer.nameOverride`                       | Override the resource name prefix	                                                                                                       |                                                                                                 |
+| `githubWebhookServer.imagePullSecrets`                    | Specifies the secret to be used when pulling the githubWebhookServer pod containers                                                       |                                                                                                 |
-| `githubWebhookServer.fullnameOverride`                   | Override the full resource names	                                                                                                       |                                                                                                 |
+| `githubWebhookServer.nameOverride`                        | Override the resource name prefix	                                                                                                        |                                                                                                 |
-| `githubWebhookServer.serviceAccount.create`              | Deploy the githubWebhookServer under a service account                                                                                    | true                                                                                            |
+| `githubWebhookServer.fullnameOverride`                    | Override the full resource names	                                                                                                        |                                                                                                 |
-| `githubWebhookServer.serviceAccount.annotations`         | Set annotations for the service account                                                                                                   |                                                                                                 |
+| `githubWebhookServer.serviceAccount.create`               | Deploy the githubWebhookServer under a service account                                                                                    | true                                                                                            |
-| `githubWebhookServer.serviceAccount.name`                | Set the service account name                                                                                                              |                                                                                                 |
+| `githubWebhookServer.serviceAccount.annotations`          | Set annotations for the service account                                                                                                   |                                                                                                 |
-| `githubWebhookServer.podAnnotations`                     | Set annotations for the githubWebhookServer pod                                                                                           |                                                                                                 |
+| `githubWebhookServer.serviceAccount.name`                 | Set the service account name                                                                                                              |                                                                                                 |
-| `githubWebhookServer.podLabels`                          | Set labels for the githubWebhookServer pod                                                                                                |                                                                                                 |
+| `githubWebhookServer.podAnnotations`                      | Set annotations for the githubWebhookServer pod                                                                                           |                                                                                                 |
-| `githubWebhookServer.podSecurityContext`                 | Set the security context to githubWebhookServer pod                                                                                       |                                                                                                 |
+| `githubWebhookServer.podLabels`                           | Set labels for the githubWebhookServer pod                                                                                                |                                                                                                 |
-| `githubWebhookServer.securityContext`                    | Set the security context for each container in the githubWebhookServer pod                                                                |                                                                                                 |
+| `githubWebhookServer.podSecurityContext`                  | Set the security context to githubWebhookServer pod                                                                                       |                                                                                                 |
-| `githubWebhookServer.resources`                          | Set the githubWebhookServer pod resources                                                                                                 |                                                                                                 |
+| `githubWebhookServer.securityContext`                     | Set the security context for each container in the githubWebhookServer pod                                                                |                                                                                                 |
-| `githubWebhookServer.topologySpreadConstraints`          | Set the githubWebhookServer pod topologySpreadConstraints                                                                                 |                                                                                                 |
+| `githubWebhookServer.resources`                           | Set the githubWebhookServer pod resources                                                                                                 |                                                                                                 |
-| `githubWebhookServer.nodeSelector`                       | Set the githubWebhookServer pod nodeSelector                                                                                              |                                                                                                 |
+| `githubWebhookServer.topologySpreadConstraints`           | Set the githubWebhookServer pod topologySpreadConstraints                                                                                 |                                                                                                 |
-| `githubWebhookServer.tolerations`                        | Set the githubWebhookServer pod tolerations                                                                                               |                                                                                                 |
+| `githubWebhookServer.nodeSelector`                        | Set the githubWebhookServer pod nodeSelector                                                                                              |                                                                                                 |
-| `githubWebhookServer.affinity`                           | Set the githubWebhookServer pod affinity rules                                                                                            |                                                                                                 |
+| `githubWebhookServer.tolerations`                         | Set the githubWebhookServer pod tolerations                                                                                               |                                                                                                 |
-| `githubWebhookServer.priorityClassName`                  | Set the githubWebhookServer pod priorityClassName                                                                                         |                                                                                                 |
+| `githubWebhookServer.affinity`                            | Set the githubWebhookServer pod affinity rules                                                                                            |                                                                                                 |
-| `githubWebhookServer.terminationGracePeriodSeconds`      | Set the githubWebhookServer pod terminationGracePeriodSeconds. Useful when using preStop hooks to drain/sleep.                            | `10`                                                                                            |
+| `githubWebhookServer.priorityClassName`                   | Set the githubWebhookServer pod priorityClassName                                                                                         |                                                                                                 |
-| `githubWebhookServer.lifecycle`                          | Set the githubWebhookServer pod lifecycle hooks                                                                                           | `{}`                                                                                            |
+| `githubWebhookServer.terminationGracePeriodSeconds`       | Set the githubWebhookServer pod terminationGracePeriodSeconds. Useful when using preStop hooks to drain/sleep.                            | `10`                                                                                            |
-| `githubWebhookServer.service.type`                       | Set githubWebhookServer service type                                                                                                      |                                                                                                 |
+| `githubWebhookServer.lifecycle`                           | Set the githubWebhookServer pod lifecycle hooks                                                                                           | `{}`                                                                                            |
-| `githubWebhookServer.service.ports`                      | Set githubWebhookServer service ports                                                                                                     | `[{"port":80, "targetPort:"http", "protocol":"TCP", "name":"http"}]`                            |
+| `githubWebhookServer.service.type`                        | Set githubWebhookServer service type                                                                                                      |                                                                                                 |
-| `githubWebhookServer.service.loadBalancerSourceRanges`   | Set githubWebhookServer loadBalancerSourceRanges for restricting loadBalancer type services                                               | `[]`                                                                                            |
+| `githubWebhookServer.service.ports`                       | Set githubWebhookServer service ports                                                                                                     | `[{"port":80, "targetPort:"http", "protocol":"TCP", "name":"http"}]`                            |
-| `githubWebhookServer.ingress.enabled`                    | Deploy an ingress kind for the githubWebhookServer                                                                                        | false                                                                                           |
+| `githubWebhookServer.service.loadBalancerSourceRanges`    | Set githubWebhookServer loadBalancerSourceRanges for restricting loadBalancer type services                                               | `[]`                                                                                            |
-| `githubWebhookServer.ingress.annotations`                | Set annotations for the ingress kind                                                                                                      |                                                                                                 |
+| `githubWebhookServer.ingress.enabled`                     | Deploy an ingress kind for the githubWebhookServer                                                                                        | false                                                                                           |
-| `githubWebhookServer.ingress.hosts`                      | Set hosts configuration for ingress                                                                                                       | `[{"host": "chart-example.local", "paths": []}]`                                                |
+| `githubWebhookServer.ingress.annotations`                 | Set annotations for the ingress kind                                                                                                      |                                                                                                 |
-| `githubWebhookServer.ingress.tls`                        | Set tls configuration for ingress                                                                                                         |                                                                                                 |
+| `githubWebhookServer.ingress.hosts`                       | Set hosts configuration for ingress                                                                                                       | `[{"host": "chart-example.local", "paths": []}]`                                                |
-| `githubWebhookServer.ingress.ingressClassName`           | Set ingress class name                                                                                                                    |                                                                                                 |
+| `githubWebhookServer.ingress.tls`                         | Set tls configuration for ingress                                                                                                         |                                                                                                 |
-| `githubWebhookServer.podDisruptionBudget.enabled`        | Enables a PDB to ensure HA of githubwebhook pods                                                                                          | false                                                                                           |
+| `githubWebhookServer.ingress.ingressClassName`            | Set ingress class name                                                                                                                    |                                                                                                 |
-| `githubWebhookServer.podDisruptionBudget.minAvailable`   | Minimum number of pods that must be available after eviction                                                                              |                                                                                                 |
+| `githubWebhookServer.podDisruptionBudget.enabled`         | Enables a PDB to ensure HA of githubwebhook pods                                                                                          | false                                                                                           |
-| `githubWebhookServer.podDisruptionBudget.maxUnavailable` | Maximum number of pods that can be unavailable after eviction. Kubernetes 1.7+ required.                                                  |                                                                                                 |
+| `githubWebhookServer.podDisruptionBudget.minAvailable`    | Minimum number of pods that must be available after eviction                                                                              |                                                                                                 |
-| `actionsMetricsServer.logLevel`                           | Set the log level of the actionsMetricsServer container                                                                                    |                                                                                                 |
+| `githubWebhookServer.podDisruptionBudget.maxUnavailable`  | Maximum number of pods that can be unavailable after eviction. Kubernetes 1.7+ required.                                                  |                                                                                                 |
-| `actionsMetricsServer.logFormat`                          | Set the log format of the actionsMetricsServer controller. Valid options are "text" and "json"                                             | text                                                                                            |
+| `actionsMetricsServer.logLevel`                           | Set the log level of the actionsMetricsServer container                                                                                   |                                                                                                 |
-| `actionsMetricsServer.enabled`                            | Deploy the actions metrics server pod                                                                                                             | false                                                                                           |
+| `actionsMetricsServer.logFormat`                          | Set the log format of the actionsMetricsServer controller. Valid options are "text" and "json"                                            | text                                                                                            |
+| `actionsMetricsServer.enabled`                            | Deploy the actions metrics server pod                                                                                                     | false                                                                                           |
 | `actionsMetricsServer.secret.enabled`                     | Passes the webhook hook secret to the actions-metrics-server                                                                              | false                                                                                           |
 | `actionsMetricsServer.secret.create`                      | Deploy the webhook hook secret                                                                                                            | false                                                                                           |
-| `actionsMetricsServer.secret.name`                        | Set the name of the webhook hook secret                                                                                                   | actions-metrics-server                                                                           |
+| `actionsMetricsServer.secret.name`                        | Set the name of the webhook hook secret                                                                                                   | actions-metrics-server                                                                          |
 | `actionsMetricsServer.secret.github_webhook_secret_token` | Set the webhook secret token value                                                                                                        |                                                                                                 |
-| `actionsMetricsServer.imagePullSecrets`                   | Specifies the secret to be used when pulling the actionsMetricsServer pod containers                                                       |                                                                                                 |
+| `actionsMetricsServer.imagePullSecrets`                   | Specifies the secret to be used when pulling the actionsMetricsServer pod containers                                                      |                                                                                                 |
-| `actionsMetricsServer.nameOverride`                       | Override the resource name prefix	                                                                                                       |                                                                                                 |
+| `actionsMetricsServer.nameOverride`                       | Override the resource name prefix	                                                                                                        |                                                                                                 |
-| `actionsMetricsServer.fullnameOverride`                   | Override the full resource names	                                                                                                       |                                                                                                 |
+| `actionsMetricsServer.fullnameOverride`                   | Override the full resource names	                                                                                                        |                                                                                                 |
-| `actionsMetricsServer.serviceAccount.create`              | Deploy the actionsMetricsServer under a service account                                                                                    | true                                                                                            |
+| `actionsMetricsServer.serviceAccount.create`              | Deploy the actionsMetricsServer under a service account                                                                                   | true                                                                                            |
 | `actionsMetricsServer.serviceAccount.annotations`         | Set annotations for the service account                                                                                                   |                                                                                                 |
 | `actionsMetricsServer.serviceAccount.name`                | Set the service account name                                                                                                              |                                                                                                 |
-| `actionsMetricsServer.podAnnotations`                     | Set annotations for the actionsMetricsServer pod                                                                                           |                                                                                                 |
+| `actionsMetricsServer.podAnnotations`                     | Set annotations for the actionsMetricsServer pod                                                                                          |                                                                                                 |
-| `actionsMetricsServer.podLabels`                          | Set labels for the actionsMetricsServer pod                                                                                                |                                                                                                 |
+| `actionsMetricsServer.podLabels`                          | Set labels for the actionsMetricsServer pod                                                                                               |                                                                                                 |
-| `actionsMetricsServer.podSecurityContext`                 | Set the security context to actionsMetricsServer pod                                                                                       |                                                                                                 |
+| `actionsMetricsServer.podSecurityContext`                 | Set the security context to actionsMetricsServer pod                                                                                      |                                                                                                 |
-| `actionsMetricsServer.securityContext`                    | Set the security context for each container in the actionsMetricsServer pod                                                                |                                                                                                 |
+| `actionsMetricsServer.securityContext`                    | Set the security context for each container in the actionsMetricsServer pod                                                               |                                                                                                 |
-| `actionsMetricsServer.resources`                          | Set the actionsMetricsServer pod resources                                                                                                 |                                                                                                 |
+| `actionsMetricsServer.resources`                          | Set the actionsMetricsServer pod resources                                                                                                |                                                                                                 |
-| `actionsMetricsServer.topologySpreadConstraints`          | Set the actionsMetricsServer pod topologySpreadConstraints                                                                                 |                                                                                                 |
+| `actionsMetricsServer.topologySpreadConstraints`          | Set the actionsMetricsServer pod topologySpreadConstraints                                                                                |                                                                                                 |
-| `actionsMetricsServer.nodeSelector`                       | Set the actionsMetricsServer pod nodeSelector                                                                                              |                                                                                                 |
+| `actionsMetricsServer.nodeSelector`                       | Set the actionsMetricsServer pod nodeSelector                                                                                             |                                                                                                 |
-| `actionsMetricsServer.tolerations`                        | Set the actionsMetricsServer pod tolerations                                                                                               |                                                                                                 |
+| `actionsMetricsServer.tolerations`                        | Set the actionsMetricsServer pod tolerations                                                                                              |                                                                                                 |
-| `actionsMetricsServer.affinity`                           | Set the actionsMetricsServer pod affinity rules                                                                                            |                                                                                                 |
+| `actionsMetricsServer.affinity`                           | Set the actionsMetricsServer pod affinity rules                                                                                           |                                                                                                 |
-| `actionsMetricsServer.priorityClassName`                  | Set the actionsMetricsServer pod priorityClassName                                                                                         |                                                                                                 |
+| `actionsMetricsServer.priorityClassName`                  | Set the actionsMetricsServer pod priorityClassName                                                                                        |                                                                                                 |
 | `actionsMetricsServer.terminationGracePeriodSeconds`      | Set the actionsMetricsServer pod terminationGracePeriodSeconds. Useful when using preStop hooks to drain/sleep.                           | `10`                                                                                            |
 | `actionsMetricsServer.lifecycle`                          | Set the actionsMetricsServer pod lifecycle hooks                                                                                          | `{}`                                                                                            |
-| `actionsMetricsServer.service.type`                       | Set actionsMetricsServer service type                                                                                                      |                                                                                                 |
+| `actionsMetricsServer.service.type`                       | Set actionsMetricsServer service type                                                                                                     |                                                                                                 |
-| `actionsMetricsServer.service.ports`                      | Set actionsMetricsServer service ports                                                                                                     | `[{"port":80, "targetPort:"http", "protocol":"TCP", "name":"http"}]`                            |
+| `actionsMetricsServer.service.ports`                      | Set actionsMetricsServer service ports                                                                                                    | `[{"port":80, "targetPort:"http", "protocol":"TCP", "name":"http"}]`                            |
 | `actionsMetricsServer.service.loadBalancerSourceRanges`   | Set actionsMetricsServer loadBalancerSourceRanges for restricting loadBalancer type services                                              | `[]`                                                                                            |
-| `actionsMetricsServer.ingress.enabled`                    | Deploy an ingress kind for the actionsMetricsServer                                                                                        | false                                                                                           |
+| `actionsMetricsServer.ingress.enabled`                    | Deploy an ingress kind for the actionsMetricsServer                                                                                       | false                                                                                           |
 | `actionsMetricsServer.ingress.annotations`                | Set annotations for the ingress kind                                                                                                      |                                                                                                 |
 | `actionsMetricsServer.ingress.hosts`                      | Set hosts configuration for ingress                                                                                                       | `[{"host": "chart-example.local", "paths": []}]`                                                |
 | `actionsMetricsServer.ingress.tls`                        | Set tls configuration for ingress                                                                                                         |                                                                                                 |
 | `actionsMetricsServer.ingress.ingressClassName`           | Set ingress class name                                                                                                                    |                                                                                                 |
-| `actionsMetrics.serviceMonitor.enable`                           | Deploy serviceMonitor kind for for use with prometheus-operator CRDs                                                                      | false                                                                                           |
+| `actionsMetrics.serviceMonitor.enable`                    | Deploy serviceMonitor kind for for use with prometheus-operator CRDs                                                                      | false                                                                                           |
-| `actionsMetrics.serviceMonitor.interval`                                 | Configure the interval that Prometheus should scrap the controller's metrics                                                                      | 1m                                                                                           |
+| `actionsMetrics.serviceMonitor.interval`                  | Configure the interval that Prometheus should scrap the controller's metrics                                                              | 1m                                                                                              |
-| `actionsMetrics.serviceMonitor.timeout`                                 | Configure the timeout the timeout of Prometheus scrapping.                                                                      | 30s                                                                                           |
+| `actionsMetrics.serviceMonitor.namespace`                 | Namespace which Prometheus is running in.                                                                                                 | `Release.Namespace` (the default namespace of the helm chart).                                  |
-| `actionsMetrics.serviceAnnotations`                       | Set annotations for the provisioned actions metrics service resource                                                                              |                                                                                                 |
+| `actionsMetrics.serviceMonitor.timeout`                   | Configure the timeout the timeout of Prometheus scrapping.                                                                                | 30s                                                                                             |
-| `actionsMetrics.port`                                     | Set port of actions metrics service                                                                                                               | 8443                                                                                            |
+| `actionsMetrics.serviceAnnotations`                       | Set annotations for the provisioned actions metrics service resource                                                                      |                                                                                                 |
+| `actionsMetrics.port`                                     | Set port of actions metrics service                                                                                                       | 8443                                                                                            |
 | `actionsMetrics.proxy.enabled`                            | Deploy kube-rbac-proxy container in controller pod                                                                                        | true                                                                                            |
 | `actionsMetrics.proxy.image.repository`                   | The "repository/image" of the kube-proxy container                                                                                        | quay.io/brancz/kube-rbac-proxy                                                                  |
 | `actionsMetrics.proxy.image.tag`                          | The tag of the kube-proxy image to use when pulling the container                                                                         | v0.13.1                                                                                         |

charts/actions-runner-controller/crds/actions.summerwind.dev_horizontalrunnerautoscalers.yaml

@@ -1,9 +1,9 @@
+---
 apiVersion: apiextensions.k8s.io/v1
 kind: CustomResourceDefinition
 metadata:
   annotations:
-    controller-gen.kubebuilder.io/version: v0.7.0
+    controller-gen.kubebuilder.io/version: v0.14.0
-  creationTimestamp: null
   name: horizontalrunnerautoscalers.actions.summerwind.dev
 spec:
   group: actions.summerwind.dev
@@ -35,10 +35,19 @@ spec:
           description: HorizontalRunnerAutoscaler is the Schema for the horizontalrunnerautoscaler API
           properties:
             apiVersion:
-              description: 'APIVersion defines the versioned schema of this representation of an object. Servers should convert recognized schemas to the latest internal value, and may reject unrecognized values. More info: https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#resources'
+              description: |-
+                APIVersion defines the versioned schema of this representation of an object.
+                Servers should convert recognized schemas to the latest internal value, and
+                may reject unrecognized values.
+                More info: https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#resources
               type: string
             kind:
-              description: 'Kind is a string value representing the REST resource this object represents. Servers may infer this from the endpoint the client submits requests to. Cannot be updated. In CamelCase. More info: https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#types-kinds'
+              description: |-
+                Kind is a string value representing the REST resource this object represents.
+                Servers may infer this from the endpoint the client submits requests to.
+                Cannot be updated.
+                In CamelCase.
+                More info: https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#types-kinds
               type: string
             metadata:
               type: object
@@ -47,7 +56,9 @@ spec:
               properties:
                 capacityReservations:
                   items:
-                    description: CapacityReservation specifies the number of replicas temporarily added to the scale target until ExpirationTime.
+                    description: |-
+                      CapacityReservation specifies the number of replicas temporarily added
+                      to the scale target until ExpirationTime.
                     properties:
                       effectiveTime:
                         format: date-time
@@ -79,30 +90,46 @@ spec:
                   items:
                     properties:
                       repositoryNames:
-                        description: RepositoryNames is the list of repository names to be used for calculating the metric. For example, a repository name is the REPO part of `github.com/USER/REPO`.
+                        description: |-
+                          RepositoryNames is the list of repository names to be used for calculating the metric.
+                          For example, a repository name is the REPO part of `github.com/USER/REPO`.
                         items:
                           type: string
                         type: array
                       scaleDownAdjustment:
-                        description: ScaleDownAdjustment is the number of runners removed on scale-down. You can only specify either ScaleDownFactor or ScaleDownAdjustment.
+                        description: |-
+                          ScaleDownAdjustment is the number of runners removed on scale-down.
+                          You can only specify either ScaleDownFactor or ScaleDownAdjustment.
                         type: integer
                       scaleDownFactor:
-                        description: ScaleDownFactor is the multiplicative factor applied to the current number of runners used to determine how many pods should be removed.
+                        description: |-
+                          ScaleDownFactor is the multiplicative factor applied to the current number of runners used
+                          to determine how many pods should be removed.
                         type: string
                       scaleDownThreshold:
-                        description: ScaleDownThreshold is the percentage of busy runners less than which will trigger the hpa to scale the runners down.
+                        description: |-
+                          ScaleDownThreshold is the percentage of busy runners less than which will
+                          trigger the hpa to scale the runners down.
                         type: string
                       scaleUpAdjustment:
-                        description: ScaleUpAdjustment is the number of runners added on scale-up. You can only specify either ScaleUpFactor or ScaleUpAdjustment.
+                        description: |-
+                          ScaleUpAdjustment is the number of runners added on scale-up.
+                          You can only specify either ScaleUpFactor or ScaleUpAdjustment.
                         type: integer
                       scaleUpFactor:
-                        description: ScaleUpFactor is the multiplicative factor applied to the current number of runners used to determine how many pods should be added.
+                        description: |-
+                          ScaleUpFactor is the multiplicative factor applied to the current number of runners used
+                          to determine how many pods should be added.
                         type: string
                       scaleUpThreshold:
-                        description: ScaleUpThreshold is the percentage of busy runners greater than which will trigger the hpa to scale runners up.
+                        description: |-
+                          ScaleUpThreshold is the percentage of busy runners greater than which will
+                          trigger the hpa to scale runners up.
                         type: string
                       type:
-                        description: Type is the type of metric to be used for autoscaling. It can be TotalNumberOfQueuedAndInProgressWorkflowRuns or PercentageRunnersBusy.
+                        description: |-
+                          Type is the type of metric to be used for autoscaling.
+                          It can be TotalNumberOfQueuedAndInProgressWorkflowRuns or PercentageRunnersBusy.
                         type: string
                     type: object
                   type: array
@@ -110,7 +137,9 @@ spec:
                   description: MinReplicas is the minimum number of replicas the deployment is allowed to scale
                   type: integer
                 scaleDownDelaySecondsAfterScaleOut:
-                  description: ScaleDownDelaySecondsAfterScaleUp is the approximate delay for a scale down followed by a scale up Used to prevent flapping (down->up->down->... loop)
+                  description: |-
+                    ScaleDownDelaySecondsAfterScaleUp is the approximate delay for a scale down followed by a scale up
+                    Used to prevent flapping (down->up->down->... loop)
                   type: integer
                 scaleTargetRef:
                   description: ScaleTargetRef is the reference to scaled resource like RunnerDeployment
@@ -126,7 +155,18 @@ spec:
                       type: string
                   type: object
                 scaleUpTriggers:
-                  description: "ScaleUpTriggers is an experimental feature to increase the desired replicas by 1 on each webhook requested received by the webhookBasedAutoscaler. \n This feature requires you to also enable and deploy the webhookBasedAutoscaler onto your cluster. \n Note that the added runners remain until the next sync period at least, and they may or may not be used by GitHub Actions depending on the timing. They are intended to be used to gain \"resource slack\" immediately after you receive a webhook from GitHub, so that you can loosely expect MinReplicas runners to be always available."
+                  description: |-
+                    ScaleUpTriggers is an experimental feature to increase the desired replicas by 1
+                    on each webhook requested received by the webhookBasedAutoscaler.
+
+
+                    This feature requires you to also enable and deploy the webhookBasedAutoscaler onto your cluster.
+
+
+                    Note that the added runners remain until the next sync period at least,
+                    and they may or may not be used by GitHub Actions depending on the timing.
+                    They are intended to be used to gain "resource slack" immediately after you
+                    receive a webhook from GitHub, so that you can loosely expect MinReplicas runners to be always available.
                   items:
                     properties:
                       amount:
@@ -139,12 +179,18 @@ spec:
                             description: https://docs.github.com/en/actions/reference/events-that-trigger-workflows#check_run
                             properties:
                               names:
-                                description: Names is a list of GitHub Actions glob patterns. Any check_run event whose name matches one of patterns in the list can trigger autoscaling. Note that check_run name seem to equal to the job name you've defined in your actions workflow yaml file. So it is very likely that you can utilize this to trigger depending on the job.
+                                description: |-
+                                  Names is a list of GitHub Actions glob patterns.
+                                  Any check_run event whose name matches one of patterns in the list can trigger autoscaling.
+                                  Note that check_run name seem to equal to the job name you've defined in your actions workflow yaml file.
+                                  So it is very likely that you can utilize this to trigger depending on the job.
                                 items:
                                   type: string
                                 type: array
                               repositories:
-                                description: Repositories is a list of GitHub repositories. Any check_run event whose repository matches one of repositories in the list can trigger autoscaling.
+                                description: |-
+                                  Repositories is a list of GitHub repositories.
+                                  Any check_run event whose repository matches one of repositories in the list can trigger autoscaling.
                                 items:
                                   type: string
                                 type: array
@@ -169,7 +215,9 @@ spec:
                                 type: array
                             type: object
                           push:
-                            description: PushSpec is the condition for triggering scale-up on push event Also see https://docs.github.com/en/actions/reference/events-that-trigger-workflows#push
+                            description: |-
+                              PushSpec is the condition for triggering scale-up on push event
+                              Also see https://docs.github.com/en/actions/reference/events-that-trigger-workflows#push
                             type: object
                           workflowJob:
                             description: https://docs.github.com/en/developers/webhooks-and-events/webhooks/webhook-events-and-payloads#workflow_job
@@ -178,23 +226,33 @@ spec:
                     type: object
                   type: array
                 scheduledOverrides:
-                  description: ScheduledOverrides is the list of ScheduledOverride. It can be used to override a few fields of HorizontalRunnerAutoscalerSpec on schedule. The earlier a scheduled override is, the higher it is prioritized.
+                  description: |-
+                    ScheduledOverrides is the list of ScheduledOverride.
+                    It can be used to override a few fields of HorizontalRunnerAutoscalerSpec on schedule.
+                    The earlier a scheduled override is, the higher it is prioritized.
                   items:
-                    description: ScheduledOverride can be used to override a few fields of HorizontalRunnerAutoscalerSpec on schedule. A schedule can optionally be recurring, so that the corresponding override happens every day, week, month, or year.
+                    description: |-
+                      ScheduledOverride can be used to override a few fields of HorizontalRunnerAutoscalerSpec on schedule.
+                      A schedule can optionally be recurring, so that the corresponding override happens every day, week, month, or year.
                     properties:
                       endTime:
                         description: EndTime is the time at which the first override ends.
                         format: date-time
                         type: string
                       minReplicas:
-                        description: MinReplicas is the number of runners while overriding. If omitted, it doesn't override minReplicas.
+                        description: |-
+                          MinReplicas is the number of runners while overriding.
+                          If omitted, it doesn't override minReplicas.
                         minimum: 0
                         nullable: true
                         type: integer
                       recurrenceRule:
                         properties:
                           frequency:
-                            description: Frequency is the name of a predefined interval of each recurrence. The valid values are "Daily", "Weekly", "Monthly", and "Yearly". If empty, the corresponding override happens only once.
+                            description: |-
+                              Frequency is the name of a predefined interval of each recurrence.
+                              The valid values are "Daily", "Weekly", "Monthly", and "Yearly".
+                              If empty, the corresponding override happens only once.
                             enum:
                               - Daily
                               - Weekly
@@ -202,7 +260,9 @@ spec:
                               - Yearly
                             type: string
                           untilTime:
-                            description: UntilTime is the time of the final recurrence. If empty, the schedule recurs forever.
+                            description: |-
+                              UntilTime is the time of the final recurrence.
+                              If empty, the schedule recurs forever.
                             format: date-time
                             type: string
                         type: object
@@ -231,18 +291,24 @@ spec:
                     type: object
                   type: array
                 desiredReplicas:
-                  description: DesiredReplicas is the total number of desired, non-terminated and latest pods to be set for the primary RunnerSet This doesn't include outdated pods while upgrading the deployment and replacing the runnerset.
+                  description: |-
+                    DesiredReplicas is the total number of desired, non-terminated and latest pods to be set for the primary RunnerSet
+                    This doesn't include outdated pods while upgrading the deployment and replacing the runnerset.
                   type: integer
                 lastSuccessfulScaleOutTime:
                   format: date-time
                   nullable: true
                   type: string
                 observedGeneration:
-                  description: ObservedGeneration is the most recent generation observed for the target. It corresponds to e.g. RunnerDeployment's generation, which is updated on mutation by the API Server.
+                  description: |-
+                    ObservedGeneration is the most recent generation observed for the target. It corresponds to e.g.
+                    RunnerDeployment's generation, which is updated on mutation by the API Server.
                   format: int64
                   type: integer
                 scheduledOverridesSummary:
-                  description: ScheduledOverridesSummary is the summary of active and upcoming scheduled overrides to be shown in e.g. a column of a `kubectl get hra` output for observability.
+                  description: |-
+                    ScheduledOverridesSummary is the summary of active and upcoming scheduled overrides to be shown in e.g. a column of a `kubectl get hra` output
+                    for observability.
                   type: string
               type: object
           type: object
@@ -251,9 +317,3 @@ spec:
       subresources:
         status: {}
   preserveUnknownFields: false
-status:
-  acceptedNames:
-    kind: ""
-    plural: ""
-  conditions: []
-  storedVersions: []

charts/actions-runner-controller/templates/actionsmetrics.deployment.yaml

@@ -111,10 +111,14 @@ spec:
               name: {{ include "actions-runner-controller.secretName" . }}
               optional: true
         {{- end }}
+        {{- if kindIs "slice" .Values.actionsMetricsServer.env }}
+        {{- toYaml .Values.actionsMetricsServer.env | nindent 8 }}
+        {{- else }}
         {{- range $key, $val := .Values.actionsMetricsServer.env }}
         - name: {{ $key }}
           value: {{ $val | quote }}
         {{- end }}
+        {{- end }}
         image: "{{ .Values.image.repository }}:{{ .Values.image.tag  | default (cat "v" .Chart.AppVersion | replace " " "") }}"
         name: actions-metrics-server
         imagePullPolicy: {{ .Values.image.pullPolicy }}

charts/actions-runner-controller/templates/actionsmetrics.servicemonitor.yaml.yml

@@ -1,4 +1,5 @@
 {{- if and .Values.actionsMetricsServer.enabled .Values.actionsMetrics.serviceMonitor.enable }}
+{{- $servicemonitornamespace := .Values.actionsMetrics.serviceMonitor.namespace | default .Release.Namespace }}
 apiVersion: monitoring.coreos.com/v1
 kind: ServiceMonitor
 metadata:
@@ -8,7 +9,7 @@ metadata:
     {{- toYaml . | nindent 4 }}
   {{- end }}
   name: {{ include "actions-runner-controller-actions-metrics-server.serviceMonitorName" . }}
-  namespace: {{ .Release.Namespace }}
+  namespace: {{ $servicemonitornamespace }}
 spec:
   endpoints:
     - path: /metrics

charts/actions-runner-controller/templates/githubwebhook.serviceMonitor.yaml

@@ -1,4 +1,5 @@
 {{- if and .Values.githubWebhookServer.enabled .Values.metrics.serviceMonitor.enable }}
+{{- $servicemonitornamespace := .Values.actionsMetrics.serviceMonitor.namespace | default .Release.Namespace }}
 apiVersion: monitoring.coreos.com/v1
 kind: ServiceMonitor
 metadata:
@@ -8,7 +9,7 @@ metadata:
     {{- toYaml . | nindent 4 }}
   {{- end }}
   name: {{ include "actions-runner-controller-github-webhook-server.serviceMonitorName" . }}
-  namespace: {{ .Release.Namespace }}
+  namespace: {{ $servicemonitornamespace }}
 spec:
   endpoints:
     - path: /metrics

charts/actions-runner-controller/values.yaml

@@ -70,7 +70,7 @@ rbac:
   {}
   # # This allows ARC to dynamically create a ServiceAccount and a Role for each Runner pod that uses "kubernetes" container mode,
   # # by extending ARC's manager role to have the same permissions required by the pod runs the runner agent in "kubernetes" container mode.
-  # # Without this, Kubernetes blocks ARC to create the role to prevent a priviledge escalation.
+  # # Without this, Kubernetes blocks ARC to create the role to prevent a privilege escalation.
   # # See https://github.com/actions/actions-runner-controller/pull/1268/files#r917327010
   # allowGrantingKubernetesContainerModePermissions: true
 
@@ -111,6 +111,7 @@ metrics:
   serviceAnnotations: {}
   serviceMonitor:
     enable: false
+    namespace: ""
     timeout: 30s
     interval: 1m
   serviceMonitorLabels: {}
@@ -312,6 +313,7 @@ actionsMetrics:
   # to deploy the actions-metrics-server whose k8s service is referenced by the service monitor.
   serviceMonitor:
     enable: false
+    namespace: ""
     timeout: 30s
     interval: 1m
   serviceMonitorLabels: {}
@@ -321,6 +323,19 @@ actionsMetrics:
     image:
       repository: quay.io/brancz/kube-rbac-proxy
       tag: v0.13.1
+  # specify additional environment variables for the webhook server pod.
+  # It's possible to specify either key vale pairs e.g.:
+  # my_env_var: "some value"
+  # my_other_env_var: "other value"
+
+  # or a list of complete environment variable definitions e.g.:
+  # - name: GITHUB_WEBHOOK_SECRET_TOKEN
+  #   valueFrom:
+  #     secretKeyRef:
+  #       key: GITHUB_WEBHOOK_SECRET_TOKEN
+  #       name: prod-gha-controller-webhook-token
+  #       optional: true
+  # env:
 
 actionsMetricsServer:
   enabled: false

charts/gha-runner-scale-set-controller/Chart.yaml

@@ -15,13 +15,13 @@ type: application
 # This is the chart version. This version number should be incremented each time you make changes
 # to the chart and its templates, including the app version.
 # Versions are expected to follow Semantic Versioning (https://semver.org/)
-version: 0.5.0
+version: 0.9.2
 
 # This is the version number of the application being deployed. This version number should be
 # incremented each time you make changes to the application. Versions are not expected to
 # follow Semantic Versioning. They should reflect the version the application is using.
 # It is recommended to use it with quotes.
-appVersion: "0.5.0"
+appVersion: "0.9.2"
 
 home: https://github.com/actions/actions-runner-controller
 

charts/gha-runner-scale-set-controller/templates/NOTES.txt

@@ -1,3 +1,5 @@
 Thank you for installing {{ .Chart.Name }}.
 
 Your release is named {{ .Release.Name }}.
+
+WARNING: Older version of the listener (githubrunnerscalesetlistener) is deprecated and will be removed in the future gha-runner-scale-set-0.10.0 release. If you are using environment variable override to force the old listener, please remove the environment variable and use the new listener (ghalistener) instead.

charts/gha-runner-scale-set-controller/templates/_helpers.tpl

@@ -48,7 +48,7 @@ app.kubernetes.io/version: {{ .Chart.AppVersion | quote }}
 app.kubernetes.io/part-of: gha-rs-controller
 app.kubernetes.io/managed-by: {{ .Release.Service }}
 {{- range $k, $v := .Values.labels }}
-{{ $k }}: {{ $v }}
+{{ $k }}: {{ $v | quote }}
 {{- end }}
 {{- end }}
 
@@ -126,7 +126,3 @@ Create the name of the service account to use
 {{- end }}
 {{- $names | join ","}}
 {{- end }}
-
-{{- define "gha-runner-scale-set-controller.serviceMonitorName" -}}
-{{- include "gha-runner-scale-set-controller.fullname" . }}-service-monitor
-{{- end }}

charts/gha-runner-scale-set-controller/templates/deployment.yaml

@@ -27,6 +27,9 @@ spec:
         app.kubernetes.io/component: controller-manager
         app.kubernetes.io/version: {{ .Chart.Version }}
         {{- include "gha-runner-scale-set-controller.selectorLabels" . | nindent 8 }}
+        {{- with .Values.podLabels }}
+          {{- toYaml . | nindent 8 }}
+        {{- end }}
     spec:
       {{- with .Values.imagePullSecrets }}
       imagePullSecrets:
@@ -91,8 +94,6 @@ spec:
           valueFrom:
             fieldRef:
               fieldPath: metadata.namespace
-        - name: CONTROLLER_MANAGER_LISTENER_IMAGE_PULL_POLICY
-          value: "{{ .Values.image.pullPolicy | default "IfNotPresent" }}"
         {{- with .Values.env }}
           {{- if kindIs "slice" . }}
             {{- toYaml . | nindent 8 }}
@@ -109,10 +110,16 @@ spec:
         volumeMounts:
         - mountPath: /tmp
           name: tmp
+        {{- range .Values.volumeMounts }}
+        - {{ toYaml . | nindent 10 }}
+        {{- end }}
       terminationGracePeriodSeconds: 10
       volumes:
       - name: tmp
         emptyDir: {}
+      {{- range .Values.volumes }}
+      - {{ toYaml . | nindent 8 }}
+      {{- end }}
       {{- with .Values.nodeSelector }}
       nodeSelector:
         {{- toYaml . | nindent 8 }}
@@ -121,6 +128,10 @@ spec:
       affinity:
         {{- toYaml . | nindent 8 }}
       {{- end }}
+      {{- with .Values.topologySpreadConstraints }}
+      topologySpreadConstraints:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
       {{- with .Values.tolerations }}
       tolerations:
         {{- toYaml . | nindent 8 }}

charts/gha-runner-scale-set-controller/tests/template_test.go

@@ -345,6 +345,7 @@ func TestTemplate_ControllerDeployment_Defaults(t *testing.T) {
 
 	assert.Len(t, deployment.Spec.Template.Spec.NodeSelector, 0)
 	assert.Nil(t, deployment.Spec.Template.Spec.Affinity)
+	assert.Len(t, deployment.Spec.Template.Spec.TopologySpreadConstraints, 0)
 	assert.Len(t, deployment.Spec.Template.Spec.Tolerations, 0)
 
 	managerImage := "ghcr.io/actions/gha-runner-scale-set-controller:dev"
@@ -368,16 +369,13 @@ func TestTemplate_ControllerDeployment_Defaults(t *testing.T) {
 	}
 	assert.ElementsMatch(t, expectedArgs, deployment.Spec.Template.Spec.Containers[0].Args)
 
-	assert.Len(t, deployment.Spec.Template.Spec.Containers[0].Env, 3)
+	assert.Len(t, deployment.Spec.Template.Spec.Containers[0].Env, 2)
 	assert.Equal(t, "CONTROLLER_MANAGER_CONTAINER_IMAGE", deployment.Spec.Template.Spec.Containers[0].Env[0].Name)
 	assert.Equal(t, managerImage, deployment.Spec.Template.Spec.Containers[0].Env[0].Value)
 
 	assert.Equal(t, "CONTROLLER_MANAGER_POD_NAMESPACE", deployment.Spec.Template.Spec.Containers[0].Env[1].Name)
 	assert.Equal(t, "metadata.namespace", deployment.Spec.Template.Spec.Containers[0].Env[1].ValueFrom.FieldRef.FieldPath)
 
-	assert.Equal(t, "CONTROLLER_MANAGER_LISTENER_IMAGE_PULL_POLICY", deployment.Spec.Template.Spec.Containers[0].Env[2].Name)
-	assert.Equal(t, "IfNotPresent", deployment.Spec.Template.Spec.Containers[0].Env[2].Value) // default value. Needs to align with controllers/actions.github.com/resourcebuilder.go
-
 	assert.Empty(t, deployment.Spec.Template.Spec.Containers[0].Resources)
 	assert.Nil(t, deployment.Spec.Template.Spec.Containers[0].SecurityContext)
 	assert.Len(t, deployment.Spec.Template.Spec.Containers[0].VolumeMounts, 1)
@@ -407,6 +405,8 @@ func TestTemplate_ControllerDeployment_Customize(t *testing.T) {
 		SetValues: map[string]string{
 			"labels.foo":                   "bar",
 			"labels.github":                "actions",
+			"labels.team":                  "GitHub Team",
+			"labels.teamMail":              "team@github.com",
 			"replicaCount":                 "1",
 			"image.pullPolicy":             "Always",
 			"image.tag":                    "dev",
@@ -425,10 +425,17 @@ func TestTemplate_ControllerDeployment_Customize(t *testing.T) {
 			"tolerations[0].key":           "foo",
 			"affinity.nodeAffinity.requiredDuringSchedulingIgnoredDuringExecution.nodeSelectorTerms[0].matchExpressions[0].key":      "foo",
 			"affinity.nodeAffinity.requiredDuringSchedulingIgnoredDuringExecution.nodeSelectorTerms[0].matchExpressions[0].operator": "bar",
-			"priorityClassName":    "test-priority-class",
+			"topologySpreadConstraints[0].labelSelector.matchLabels.foo":                                                             "bar",
-			"flags.updateStrategy": "eventual",
+			"topologySpreadConstraints[0].maxSkew":                                                                                   "1",
-			"flags.logLevel":       "info",
+			"topologySpreadConstraints[0].topologyKey":                                                                               "foo",
-			"flags.logFormat":      "json",
+			"priorityClassName":         "test-priority-class",
+			"flags.updateStrategy":      "eventual",
+			"flags.logLevel":            "info",
+			"flags.logFormat":           "json",
+			"volumes[0].name":           "customMount",
+			"volumes[0].configMap.name": "my-configmap",
+			"volumeMounts[0].name":      "customMount",
+			"volumeMounts[0].mountPath": "/my/mount/path",
 		},
 		KubectlOptions: k8s.NewKubectlOptions("", "", namespaceName),
 	}
@@ -448,6 +455,8 @@ func TestTemplate_ControllerDeployment_Customize(t *testing.T) {
 	assert.Equal(t, "gha-rs-controller", deployment.Labels["app.kubernetes.io/part-of"])
 	assert.Equal(t, "bar", deployment.Labels["foo"])
 	assert.Equal(t, "actions", deployment.Labels["github"])
+	assert.Equal(t, "GitHub Team", deployment.Labels["team"])
+	assert.Equal(t, "team@github.com", deployment.Labels["teamMail"])
 
 	assert.Equal(t, int32(1), *deployment.Spec.Replicas)
 
@@ -460,8 +469,8 @@ func TestTemplate_ControllerDeployment_Customize(t *testing.T) {
 	assert.Equal(t, "bar", deployment.Spec.Template.Annotations["foo"])
 	assert.Equal(t, "manager", deployment.Spec.Template.Annotations["kubectl.kubernetes.io/default-container"])
 
-	assert.Equal(t, "ENV_VAR_NAME_1", deployment.Spec.Template.Spec.Containers[0].Env[3].Name)
+	assert.Equal(t, "ENV_VAR_NAME_1", deployment.Spec.Template.Spec.Containers[0].Env[2].Name)
-	assert.Equal(t, "ENV_VAR_VALUE_1", deployment.Spec.Template.Spec.Containers[0].Env[3].Value)
+	assert.Equal(t, "ENV_VAR_VALUE_1", deployment.Spec.Template.Spec.Containers[0].Env[2].Value)
 
 	assert.Len(t, deployment.Spec.Template.Spec.ImagePullSecrets, 1)
 	assert.Equal(t, "dockerhub", deployment.Spec.Template.Spec.ImagePullSecrets[0].Name)
@@ -469,9 +478,11 @@ func TestTemplate_ControllerDeployment_Customize(t *testing.T) {
 	assert.Equal(t, int64(1000), *deployment.Spec.Template.Spec.SecurityContext.FSGroup)
 	assert.Equal(t, "test-priority-class", deployment.Spec.Template.Spec.PriorityClassName)
 	assert.Equal(t, int64(10), *deployment.Spec.Template.Spec.TerminationGracePeriodSeconds)
-	assert.Len(t, deployment.Spec.Template.Spec.Volumes, 1)
+	assert.Len(t, deployment.Spec.Template.Spec.Volumes, 2)
 	assert.Equal(t, "tmp", deployment.Spec.Template.Spec.Volumes[0].Name)
-	assert.NotNil(t, 10, deployment.Spec.Template.Spec.Volumes[0].EmptyDir)
+	assert.NotNil(t, deployment.Spec.Template.Spec.Volumes[0].EmptyDir)
+	assert.Equal(t, "customMount", deployment.Spec.Template.Spec.Volumes[1].Name)
+	assert.Equal(t, "my-configmap", deployment.Spec.Template.Spec.Volumes[1].ConfigMap.Name)
 
 	assert.Len(t, deployment.Spec.Template.Spec.NodeSelector, 1)
 	assert.Equal(t, "bar", deployment.Spec.Template.Spec.NodeSelector["foo"])
@@ -480,6 +491,11 @@ func TestTemplate_ControllerDeployment_Customize(t *testing.T) {
 	assert.Equal(t, "foo", deployment.Spec.Template.Spec.Affinity.NodeAffinity.RequiredDuringSchedulingIgnoredDuringExecution.NodeSelectorTerms[0].MatchExpressions[0].Key)
 	assert.Equal(t, "bar", string(deployment.Spec.Template.Spec.Affinity.NodeAffinity.RequiredDuringSchedulingIgnoredDuringExecution.NodeSelectorTerms[0].MatchExpressions[0].Operator))
 
+	assert.Len(t, deployment.Spec.Template.Spec.TopologySpreadConstraints, 1)
+	assert.Equal(t, "bar", deployment.Spec.Template.Spec.TopologySpreadConstraints[0].LabelSelector.MatchLabels["foo"])
+	assert.Equal(t, int32(1), deployment.Spec.Template.Spec.TopologySpreadConstraints[0].MaxSkew)
+	assert.Equal(t, "foo", deployment.Spec.Template.Spec.TopologySpreadConstraints[0].TopologyKey)
+
 	assert.Len(t, deployment.Spec.Template.Spec.Tolerations, 1)
 	assert.Equal(t, "foo", deployment.Spec.Template.Spec.Tolerations[0].Key)
 
@@ -506,26 +522,25 @@ func TestTemplate_ControllerDeployment_Customize(t *testing.T) {
 
 	assert.ElementsMatch(t, expectArgs, deployment.Spec.Template.Spec.Containers[0].Args)
 
-	assert.Len(t, deployment.Spec.Template.Spec.Containers[0].Env, 4)
+	assert.Len(t, deployment.Spec.Template.Spec.Containers[0].Env, 3)
 	assert.Equal(t, "CONTROLLER_MANAGER_CONTAINER_IMAGE", deployment.Spec.Template.Spec.Containers[0].Env[0].Name)
 	assert.Equal(t, managerImage, deployment.Spec.Template.Spec.Containers[0].Env[0].Value)
 
-	assert.Equal(t, "CONTROLLER_MANAGER_LISTENER_IMAGE_PULL_POLICY", deployment.Spec.Template.Spec.Containers[0].Env[2].Name)
-	assert.Equal(t, "Always", deployment.Spec.Template.Spec.Containers[0].Env[2].Value) // default value. Needs to align with controllers/actions.github.com/resourcebuilder.go
-
-	assert.Equal(t, "ENV_VAR_NAME_1", deployment.Spec.Template.Spec.Containers[0].Env[3].Name)
-	assert.Equal(t, "ENV_VAR_VALUE_1", deployment.Spec.Template.Spec.Containers[0].Env[3].Value)
-
 	assert.Equal(t, "CONTROLLER_MANAGER_POD_NAMESPACE", deployment.Spec.Template.Spec.Containers[0].Env[1].Name)
 	assert.Equal(t, "metadata.namespace", deployment.Spec.Template.Spec.Containers[0].Env[1].ValueFrom.FieldRef.FieldPath)
 
+	assert.Equal(t, "ENV_VAR_NAME_1", deployment.Spec.Template.Spec.Containers[0].Env[2].Name)
+	assert.Equal(t, "ENV_VAR_VALUE_1", deployment.Spec.Template.Spec.Containers[0].Env[2].Value)
+
 	assert.Equal(t, "500m", deployment.Spec.Template.Spec.Containers[0].Resources.Limits.Cpu().String())
 	assert.True(t, *deployment.Spec.Template.Spec.Containers[0].SecurityContext.RunAsNonRoot)
 	assert.Equal(t, int64(1000), *deployment.Spec.Template.Spec.Containers[0].SecurityContext.RunAsUser)
 
-	assert.Len(t, deployment.Spec.Template.Spec.Containers[0].VolumeMounts, 1)
+	assert.Len(t, deployment.Spec.Template.Spec.Containers[0].VolumeMounts, 2)
 	assert.Equal(t, "tmp", deployment.Spec.Template.Spec.Containers[0].VolumeMounts[0].Name)
 	assert.Equal(t, "/tmp", deployment.Spec.Template.Spec.Containers[0].VolumeMounts[0].MountPath)
+	assert.Equal(t, "customMount", deployment.Spec.Template.Spec.Containers[0].VolumeMounts[1].Name)
+	assert.Equal(t, "/my/mount/path", deployment.Spec.Template.Spec.Containers[0].VolumeMounts[1].MountPath)
 }
 
 func TestTemplate_EnableLeaderElectionRole(t *testing.T) {
@@ -739,6 +754,7 @@ func TestTemplate_ControllerDeployment_WatchSingleNamespace(t *testing.T) {
 
 	assert.Len(t, deployment.Spec.Template.Spec.NodeSelector, 0)
 	assert.Nil(t, deployment.Spec.Template.Spec.Affinity)
+	assert.Len(t, deployment.Spec.Template.Spec.TopologySpreadConstraints, 0)
 	assert.Len(t, deployment.Spec.Template.Spec.Tolerations, 0)
 
 	managerImage := "ghcr.io/actions/gha-runner-scale-set-controller:dev"
@@ -764,16 +780,13 @@ func TestTemplate_ControllerDeployment_WatchSingleNamespace(t *testing.T) {
 
 	assert.ElementsMatch(t, expectedArgs, deployment.Spec.Template.Spec.Containers[0].Args)
 
-	assert.Len(t, deployment.Spec.Template.Spec.Containers[0].Env, 3)
+	assert.Len(t, deployment.Spec.Template.Spec.Containers[0].Env, 2)
 	assert.Equal(t, "CONTROLLER_MANAGER_CONTAINER_IMAGE", deployment.Spec.Template.Spec.Containers[0].Env[0].Name)
 	assert.Equal(t, managerImage, deployment.Spec.Template.Spec.Containers[0].Env[0].Value)
 
 	assert.Equal(t, "CONTROLLER_MANAGER_POD_NAMESPACE", deployment.Spec.Template.Spec.Containers[0].Env[1].Name)
 	assert.Equal(t, "metadata.namespace", deployment.Spec.Template.Spec.Containers[0].Env[1].ValueFrom.FieldRef.FieldPath)
 
-	assert.Equal(t, "CONTROLLER_MANAGER_LISTENER_IMAGE_PULL_POLICY", deployment.Spec.Template.Spec.Containers[0].Env[2].Name)
-	assert.Equal(t, "IfNotPresent", deployment.Spec.Template.Spec.Containers[0].Env[2].Value) // default value. Needs to align with controllers/actions.github.com/resourcebuilder.go
-
 	assert.Empty(t, deployment.Spec.Template.Spec.Containers[0].Resources)
 	assert.Nil(t, deployment.Spec.Template.Spec.Containers[0].SecurityContext)
 	assert.Len(t, deployment.Spec.Template.Spec.Containers[0].VolumeMounts, 1)
@@ -815,17 +828,17 @@ func TestTemplate_ControllerContainerEnvironmentVariables(t *testing.T) {
 	assert.Equal(t, namespaceName, deployment.Namespace)
 	assert.Equal(t, "test-arc-gha-rs-controller", deployment.Name)
 
-	assert.Len(t, deployment.Spec.Template.Spec.Containers[0].Env, 7)
+	assert.Len(t, deployment.Spec.Template.Spec.Containers[0].Env, 6)
-	assert.Equal(t, "ENV_VAR_NAME_1", deployment.Spec.Template.Spec.Containers[0].Env[3].Name)
+	assert.Equal(t, "ENV_VAR_NAME_1", deployment.Spec.Template.Spec.Containers[0].Env[2].Name)
-	assert.Equal(t, "ENV_VAR_VALUE_1", deployment.Spec.Template.Spec.Containers[0].Env[3].Value)
+	assert.Equal(t, "ENV_VAR_VALUE_1", deployment.Spec.Template.Spec.Containers[0].Env[2].Value)
-	assert.Equal(t, "ENV_VAR_NAME_2", deployment.Spec.Template.Spec.Containers[0].Env[4].Name)
+	assert.Equal(t, "ENV_VAR_NAME_2", deployment.Spec.Template.Spec.Containers[0].Env[3].Name)
-	assert.Equal(t, "secret-name", deployment.Spec.Template.Spec.Containers[0].Env[4].ValueFrom.SecretKeyRef.Name)
+	assert.Equal(t, "secret-name", deployment.Spec.Template.Spec.Containers[0].Env[3].ValueFrom.SecretKeyRef.Name)
-	assert.Equal(t, "ENV_VAR_NAME_2", deployment.Spec.Template.Spec.Containers[0].Env[4].ValueFrom.SecretKeyRef.Key)
+	assert.Equal(t, "ENV_VAR_NAME_2", deployment.Spec.Template.Spec.Containers[0].Env[3].ValueFrom.SecretKeyRef.Key)
-	assert.True(t, *deployment.Spec.Template.Spec.Containers[0].Env[4].ValueFrom.SecretKeyRef.Optional)
+	assert.True(t, *deployment.Spec.Template.Spec.Containers[0].Env[3].ValueFrom.SecretKeyRef.Optional)
-	assert.Equal(t, "ENV_VAR_NAME_3", deployment.Spec.Template.Spec.Containers[0].Env[5].Name)
+	assert.Equal(t, "ENV_VAR_NAME_3", deployment.Spec.Template.Spec.Containers[0].Env[4].Name)
-	assert.Empty(t, deployment.Spec.Template.Spec.Containers[0].Env[5].Value)
+	assert.Empty(t, deployment.Spec.Template.Spec.Containers[0].Env[4].Value)
-	assert.Equal(t, "ENV_VAR_NAME_4", deployment.Spec.Template.Spec.Containers[0].Env[6].Name)
+	assert.Equal(t, "ENV_VAR_NAME_4", deployment.Spec.Template.Spec.Containers[0].Env[5].Name)
-	assert.Empty(t, deployment.Spec.Template.Spec.Containers[0].Env[6].ValueFrom)
+	assert.Empty(t, deployment.Spec.Template.Spec.Containers[0].Env[5].ValueFrom)
 }
 
 func TestTemplate_WatchSingleNamespace_NotCreateManagerClusterRole(t *testing.T) {

charts/gha-runner-scale-set-controller/values.yaml

@@ -41,6 +41,8 @@ serviceAccount:
 
 podAnnotations: {}
 
+podLabels: {}
+
 podSecurityContext: {}
 # fsGroup: 2000
 
@@ -70,11 +72,28 @@ tolerations: []
 
 affinity: {}
 
+topologySpreadConstraints: []
+
+# Mount volumes in the container.
+volumes: []
+volumeMounts: []
+
 # Leverage a PriorityClass to ensure your pods survive resource shortages
 # ref: https://kubernetes.io/docs/concepts/configuration/pod-priority-preemption/
 # PriorityClass: system-cluster-critical
 priorityClassName: ""
 
+## If `metrics:` object is not provided, or commented out, the following flags
+## will be applied the controller-manager and listener pods with empty values:
+## `--metrics-addr`, `--listener-metrics-addr`, `--listener-metrics-endpoint`.
+## This will disable metrics.
+##
+## To enable metrics, uncomment the following lines.
+# metrics:
+#   controllerManagerAddr: ":8080"
+#   listenerAddr: ":8080"
+#   listenerEndpoint: "/metrics"
+
 flags:
   ## Log level can be set here with one of the following values: "debug", "info", "warn", "error".
   ## Defaults to "debug".
@@ -89,7 +108,7 @@ flags:
 
   ## Defines how the controller should handle upgrades while having running jobs.
   ##
-  ## The srategies available are:
+  ## The strategies available are:
   ## - "immediate": (default) The controller will immediately apply the change causing the
   ##   recreation of the listener and ephemeral runner set. This can lead to an
   ##   overprovisioning of runners, if there are pending / running jobs. This should not
@@ -102,14 +121,3 @@ flags:
   ##   This can lead to a longer time to apply the change but it will ensure
   ##   that you don't have any overprovisioning of runners.
   updateStrategy: "immediate"
-
-## If `metrics:` object is not provided, or commented out, the following flags 
-## will be applied the controller-manager and listener pods with empty values: 
-## `--metrics-addr`, `--listener-metrics-addr`, `--listener-metrics-endpoint`. 
-## This will disable metrics.
-##
-## To enable metrics, uncomment the following lines.
-# metrics:
-#   controllerManagerAddr: ":8080"
-#   listenerAddr: ":8080"
-#   listenerEndpoint: "/metrics"

charts/gha-runner-scale-set/Chart.yaml

@@ -15,18 +15,18 @@ type: application
 # This is the chart version. This version number should be incremented each time you make changes
 # to the chart and its templates, including the app version.
 # Versions are expected to follow Semantic Versioning (https://semver.org/)
-version: 0.5.0
+version: 0.9.2
 
 # This is the version number of the application being deployed. This version number should be
 # incremented each time you make changes to the application. Versions are not expected to
 # follow Semantic Versioning. They should reflect the version the application is using.
 # It is recommended to use it with quotes.
-appVersion: "0.5.0"
+appVersion: "0.9.2"
 
-home: https://github.com/actions/dev-arc
+home: https://github.com/actions/actions-runner-controller
 
 sources:
-  - "https://github.com/actions/dev-arc"
+  - "https://github.com/actions/actions-runner-controller"
 
 maintainers:
   - name: actions

charts/gha-runner-scale-set/templates/_helpers.tpl

@@ -10,6 +10,10 @@ gha-rs
 {{- default (include "gha-base-name" .) .Values.nameOverride | trunc 63 | trimSuffix "-" }}
 {{- end }}
 
+{{- define "gha-runner-scale-set.scale-set-name" -}}
+{{ .Values.runnerScaleSetName | default .Release.Name }}
+{{- end }}
+
 {{/*
 Create a default fully qualified app name.
 We truncate at 63 chars because some Kubernetes name fields are limited to this (by the DNS naming spec).
@@ -17,7 +21,7 @@ If release name contains chart name it will be used as a full name.
 */}}
 {{- define "gha-runner-scale-set.fullname" -}}
 {{- $name := default (include "gha-base-name" .) }}
-{{- printf "%s-%s" .Release.Name $name | trunc 63 | trimSuffix "-" }}
+{{- printf "%s-%s" (include "gha-runner-scale-set.scale-set-name" .) $name | trunc 63 | trimSuffix "-" }}
 {{- end }}
 
 {{/*
@@ -38,7 +42,7 @@ app.kubernetes.io/version: {{ .Chart.AppVersion | quote }}
 {{- end }}
 app.kubernetes.io/managed-by: {{ .Release.Service }}
 app.kubernetes.io/part-of: gha-rs
-actions.github.com/scale-set-name: {{ .Release.Name }}
+actions.github.com/scale-set-name: {{ include "gha-runner-scale-set.scale-set-name" . }}
 actions.github.com/scale-set-namespace: {{ .Release.Namespace }}
 {{- end }}
 
@@ -46,8 +50,8 @@ actions.github.com/scale-set-namespace: {{ .Release.Namespace }}
 Selector labels
 */}}
 {{- define "gha-runner-scale-set.selectorLabels" -}}
-app.kubernetes.io/name: {{ include "gha-runner-scale-set.name" . }}
+app.kubernetes.io/name: {{ include "gha-runner-scale-set.scale-set-name" . }}
-app.kubernetes.io/instance: {{ .Release.Name }}
+app.kubernetes.io/instance: {{ include "gha-runner-scale-set.scale-set-name" . }}
 {{- end }}
 
 {{- define "gha-runner-scale-set.githubsecret" -}}
@@ -93,19 +97,26 @@ volumeMounts:
 
 {{- define "gha-runner-scale-set.dind-container" -}}
 image: docker:dind
+args:
+  - dockerd
+  - --host=unix:///var/run/docker.sock
+  - --group=$(DOCKER_GROUP_GID)
+env:
+  - name: DOCKER_GROUP_GID
+    value: "123"
 securityContext:
   privileged: true
 volumeMounts:
   - name: work
     mountPath: /home/runner/_work
-  - name: dind-cert
+  - name: dind-sock
-    mountPath: /certs/client
+    mountPath: /var/run
   - name: dind-externals
     mountPath: /home/runner/externals
 {{- end }}
 
 {{- define "gha-runner-scale-set.dind-volume" -}}
-- name: dind-cert
+- name: dind-sock
   emptyDir: {}
 - name: dind-externals
   emptyDir: {}
@@ -185,8 +196,6 @@ volumeMounts:
       {{- end }}
     {{- end }}
     {{- $setDockerHost := 1 }}
-    {{- $setDockerTlsVerify := 1 }}
-    {{- $setDockerCertPath := 1 }}
     {{- $setRunnerWaitDocker := 1 }}
     {{- $setNodeExtraCaCerts := 0 }}
     {{- $setRunnerUpdateCaCerts := 0 }}
@@ -200,12 +209,6 @@ env:
         {{- if eq $env.name "DOCKER_HOST" }}
           {{- $setDockerHost = 0 }}
         {{- end }}
-        {{- if eq $env.name "DOCKER_TLS_VERIFY" }}
-          {{- $setDockerTlsVerify = 0 }}
-        {{- end }}
-        {{- if eq $env.name "DOCKER_CERT_PATH" }}
-          {{- $setDockerCertPath = 0 }}
-        {{- end }}
         {{- if eq $env.name "RUNNER_WAIT_FOR_DOCKER_IN_SECONDS" }}
           {{- $setRunnerWaitDocker = 0 }}
         {{- end }}
@@ -220,15 +223,7 @@ env:
     {{- end }}
     {{- if $setDockerHost }}
   - name: DOCKER_HOST
-    value: tcp://localhost:2376
+    value: unix:///var/run/docker.sock
-    {{- end }}
-    {{- if $setDockerTlsVerify }}
-  - name: DOCKER_TLS_VERIFY
-    value: "1"
-    {{- end }}
-    {{- if $setDockerCertPath }}
-  - name: DOCKER_CERT_PATH
-    value: /certs/client
     {{- end }}
     {{- if $setRunnerWaitDocker }}
   - name: RUNNER_WAIT_FOR_DOCKER_IN_SECONDS
@@ -254,7 +249,7 @@ volumeMounts:
         {{- if eq $volMount.name "work" }}
           {{- $mountWork = 0 }}
         {{- end }}
-        {{- if eq $volMount.name "dind-cert" }}
+        {{- if eq $volMount.name "dind-sock" }}
           {{- $mountDindCert = 0 }}
         {{- end }}
         {{- if eq $volMount.name "github-server-tls-cert" }}
@@ -268,9 +263,8 @@ volumeMounts:
     mountPath: /home/runner/_work
     {{- end }}
     {{- if $mountDindCert }}
-  - name: dind-cert
+  - name: dind-sock
-    mountPath: /certs/client
+    mountPath: /var/run
-    readOnly: true
     {{- end }}
     {{- if $mountGitHubServerTLS }}
   - name: github-server-tls-cert
@@ -390,6 +384,9 @@ volumeMounts:
     {{- $setNodeExtraCaCerts = 1 }}
     {{- $setRunnerUpdateCaCerts = 1 }}
   {{- end }}
+
+  {{- $mountGitHubServerTLS := 0 }}
+  {{- if or $container.env $setNodeExtraCaCerts $setRunnerUpdateCaCerts }}
   env:
     {{- with $container.env }}
       {{- range $i, $env := . }}
@@ -410,10 +407,12 @@ volumeMounts:
     - name: RUNNER_UPDATE_CA_CERTS
       value: "1"
     {{- end }}
-    {{- $mountGitHubServerTLS := 0 }}
     {{- if $tlsConfig.runnerMountPath }}
       {{- $mountGitHubServerTLS = 1 }}
     {{- end }}
+  {{- end }}
+
+  {{- if or $container.volumeMounts $mountGitHubServerTLS }}
   volumeMounts:
     {{- with $container.volumeMounts }}
       {{- range $i, $volMount := . }}
@@ -428,6 +427,7 @@ volumeMounts:
       mountPath: {{ clean (print $tlsConfig.runnerMountPath "/" $tlsConfig.certificateFrom.configMapKeyRef.key) }}
       subPath: {{ $tlsConfig.certificateFrom.configMapKeyRef.key }}
     {{- end }}
+  {{- end}}
 {{- end }}
 {{- end }}
 {{- end }}
@@ -525,13 +525,13 @@ volumeMounts:
     {{- end }}
   {{- end }}
   {{- if and (eq $multiNamespacesCounter 0) (eq $singleNamespaceCounter 0) }}
-    {{- fail "No gha-rs-controller deployment found using label (app.kubernetes.io/part-of=gha-rs-controller). Consider setting controllerServiceAccount.name in values.yaml to be explicit if you think the discovery is wrong." }}
+    {{- fail "No gha-rs-controller deployment found using label (app.kubernetes.io/part-of=gha-rs-controller). Consider setting controllerServiceAccount.namespace in values.yaml to be explicit if you think the discovery is wrong." }}
   {{- end }}
   {{- if and (gt $multiNamespacesCounter 0) (gt $singleNamespaceCounter 0) }}
-    {{- fail "Found both gha-rs-controller installed with flags.watchSingleNamespace set and unset in cluster, this is not supported. Consider setting controllerServiceAccount.name in values.yaml to be explicit if you think the discovery is wrong." }}
+    {{- fail "Found both gha-rs-controller installed with flags.watchSingleNamespace set and unset in cluster, this is not supported. Consider setting controllerServiceAccount.namespace in values.yaml to be explicit if you think the discovery is wrong." }}
   {{- end }}
   {{- if gt $multiNamespacesCounter 1 }}
-    {{- fail "More than one gha-rs-controller deployment found using label (app.kubernetes.io/part-of=gha-rs-controller). Consider setting controllerServiceAccount.name in values.yaml to be explicit if you think the discovery is wrong." }}
+    {{- fail "More than one gha-rs-controller deployment found using label (app.kubernetes.io/part-of=gha-rs-controller). Consider setting controllerServiceAccount.namespace in values.yaml to be explicit if you think the discovery is wrong." }}
   {{- end }}
   {{- if eq $multiNamespacesCounter 1 }}
     {{- with $controllerDeployment.metadata }}
@@ -544,11 +544,11 @@ volumeMounts:
         {{- $managerServiceAccountNamespace = (get $controllerDeployment.metadata.labels "actions.github.com/controller-service-account-namespace") }}
       {{- end }}
     {{- else }}
-      {{- fail "No gha-rs-controller deployment that watch this namespace found using label (actions.github.com/controller-watch-single-namespace). Consider setting controllerServiceAccount.name in values.yaml to be explicit if you think the discovery is wrong." }}
+      {{- fail "No gha-rs-controller deployment that watch this namespace found using label (actions.github.com/controller-watch-single-namespace). Consider setting controllerServiceAccount.namespace in values.yaml to be explicit if you think the discovery is wrong." }}
     {{- end }}
   {{- end }}
   {{- if eq $managerServiceAccountNamespace "" }}
-    {{- fail "No service account namespace found for gha-rs-controller deployment using label (actions.github.com/controller-service-account-namespace), consider setting controllerServiceAccount.name in values.yaml to be explicit if you think the discovery is wrong." }}
+    {{- fail "No service account namespace found for gha-rs-controller deployment using label (actions.github.com/controller-service-account-namespace), consider setting controllerServiceAccount.namespace in values.yaml to be explicit if you think the discovery is wrong." }}
   {{- end }}
 {{- $managerServiceAccountNamespace }}
 {{- end }}

charts/gha-runner-scale-set/templates/autoscalingrunnerset.yaml

@@ -1,18 +1,19 @@
 apiVersion: actions.github.com/v1alpha1
 kind: AutoscalingRunnerSet
 metadata:
-  {{- if or (not .Release.Name) (gt (len .Release.Name) 45) }}
+  {{- if or (not (include "gha-runner-scale-set.scale-set-name" .)) (gt (len (include "gha-runner-scale-set.scale-set-name" .)) 45) }}
   {{ fail "Name must have up to 45 characters" }}
   {{- end }}
   {{- if gt (len .Release.Namespace) 63 }}
   {{ fail "Namespace must have up to 63 characters" }}
   {{- end }}
-  name: {{ .Release.Name }}
+  name: {{ include "gha-runner-scale-set.scale-set-name" . }}
   namespace: {{ .Release.Namespace }}
   labels:
     app.kubernetes.io/component: "autoscaling-runner-set"
     {{- include "gha-runner-scale-set.labels" . | nindent 4 }}
   annotations:
+    actions.github.com/values-hash: {{ toJson .Values | sha256sum | trunc 63 }}
     {{- $containerMode := .Values.containerMode }}
     {{- if not (kindIs "string" .Values.githubConfigSecret) }}
     actions.github.com/cleanup-github-secret-name: {{ include "gha-runner-scale-set.githubsecret" . }}
@@ -88,6 +89,11 @@ spec:
   minRunners: {{ .Values.minRunners | int }}
   {{- end }}
 
+  {{- with .Values.listenerTemplate}}
+  listenerTemplate:
+    {{- toYaml . | nindent 4}}
+  {{- end }}
+
   template:
     {{- with .Values.template.metadata }}
     metadata:
@@ -106,6 +112,9 @@ spec:
       {{ $key }}: {{ $val | toYaml | nindent 8 }}
         {{- end }}
       {{- end }}
+      {{- if not .Values.template.spec.restartPolicy }}
+      restartPolicy: Never
+      {{- end }}
       {{- $containerMode := .Values.containerMode }}
       {{- if eq $containerMode.type "kubernetes" }}
       serviceAccountName: {{ default (include "gha-runner-scale-set.kubeModeServiceAccountName" .) .Values.template.spec.serviceAccountName }}

charts/gha-runner-scale-set/templates/kube_mode_serviceaccount.yaml

@@ -5,6 +5,12 @@ kind: ServiceAccount
 metadata:
   name: {{ include "gha-runner-scale-set.kubeModeServiceAccountName" . }}
   namespace: {{ .Release.Namespace }}
+  {{- if .Values.containerMode.kubernetesModeServiceAccount }}
+  {{- with .Values.containerMode.kubernetesModeServiceAccount.annotations }}
+  annotations:
+  {{- toYaml . | nindent 4 }}
+  {{- end }}
+  {{- end }}
   finalizers:
     - actions.github.com/cleanup-protection
   labels:

charts/gha-runner-scale-set/tests/template_test.go

@@ -330,7 +330,7 @@ func TestTemplateRenderedAutoScalingRunnerSet(t *testing.T) {
 	assert.Equal(t, namespaceName, ars.Namespace)
 	assert.Equal(t, "test-runners", ars.Name)
 
-	assert.Equal(t, "gha-rs", ars.Labels["app.kubernetes.io/name"])
+	assert.Equal(t, "test-runners", ars.Labels["app.kubernetes.io/name"])
 	assert.Equal(t, "test-runners", ars.Labels["app.kubernetes.io/instance"])
 	assert.Equal(t, "gha-rs", ars.Labels["app.kubernetes.io/part-of"])
 	assert.Equal(t, "autoscaling-runner-set", ars.Labels["app.kubernetes.io/component"])
@@ -361,6 +361,7 @@ func TestTemplateRenderedAutoScalingRunnerSet_RunnerScaleSetName(t *testing.T) {
 	require.NoError(t, err)
 
 	releaseName := "test-runners"
+	nameOverride := "test-runner-scale-set-name"
 	namespaceName := "test-" + strings.ToLower(random.UniqueId())
 
 	options := &helm.Options{
@@ -368,7 +369,7 @@ func TestTemplateRenderedAutoScalingRunnerSet_RunnerScaleSetName(t *testing.T) {
 		SetValues: map[string]string{
 			"githubConfigUrl":                    "https://github.com/actions",
 			"githubConfigSecret.github_token":    "gh_token12345",
-			"runnerScaleSetName":                 "test-runner-scale-set-name",
+			"runnerScaleSetName":                 nameOverride,
 			"controllerServiceAccount.name":      "arc",
 			"controllerServiceAccount.namespace": "arc-system",
 		},
@@ -381,12 +382,15 @@ func TestTemplateRenderedAutoScalingRunnerSet_RunnerScaleSetName(t *testing.T) {
 	helm.UnmarshalK8SYaml(t, output, &ars)
 
 	assert.Equal(t, namespaceName, ars.Namespace)
-	assert.Equal(t, "test-runners", ars.Name)
+	assert.Equal(t, nameOverride, ars.Name)
 
-	assert.Equal(t, "gha-rs", ars.Labels["app.kubernetes.io/name"])
+	assert.Equal(t, nameOverride, ars.Labels["app.kubernetes.io/name"])
-	assert.Equal(t, "test-runners", ars.Labels["app.kubernetes.io/instance"])
+	assert.Equal(t, nameOverride, ars.Labels["app.kubernetes.io/instance"])
+	assert.Equal(t, nameOverride, ars.Labels["actions.github.com/scale-set-name"])
+	assert.Equal(t, namespaceName, ars.Labels["actions.github.com/scale-set-namespace"])
+	assert.Equal(t, "gha-rs", ars.Labels["app.kubernetes.io/part-of"])
 	assert.Equal(t, "https://github.com/actions", ars.Spec.GitHubConfigUrl)
-	assert.Equal(t, "test-runners-gha-rs-github-secret", ars.Spec.GitHubConfigSecret)
+	assert.Equal(t, nameOverride+"-gha-rs-github-secret", ars.Spec.GitHubConfigSecret)
 	assert.Equal(t, "test-runner-scale-set-name", ars.Spec.RunnerScaleSetName)
 
 	assert.Empty(t, ars.Spec.RunnerGroup, "RunnerGroup should be empty")
@@ -738,6 +742,37 @@ func TestTemplateRenderedAutoScalingRunnerSet_DinD_ExtraInitContainers(t *testin
 	assert.Equal(t, "ls", ars.Spec.Template.Spec.InitContainers[2].Command[0], "InitContainers[2] Command[0] should be ls")
 }
 
+func TestTemplateRenderedKubernetesModeServiceAccountAnnotations(t *testing.T) {
+	t.Parallel()
+
+	// Path to the helm chart we will test
+	helmChartPath, err := filepath.Abs("../../gha-runner-scale-set")
+	require.NoError(t, err)
+
+	testValuesPath, err := filepath.Abs("../tests/values_kubernetes_mode_service_account_annotations.yaml")
+	require.NoError(t, err)
+
+	releaseName := "test-runners"
+	namespaceName := "test-" + strings.ToLower(random.UniqueId())
+
+	options := &helm.Options{
+		Logger: logger.Discard,
+		SetValues: map[string]string{
+			"controllerServiceAccount.name":      "arc",
+			"controllerServiceAccount.namespace": "arc-system",
+		},
+		ValuesFiles:    []string{testValuesPath},
+		KubectlOptions: k8s.NewKubectlOptions("", "", namespaceName),
+	}
+
+	output := helm.RenderTemplate(t, options, helmChartPath, releaseName, []string{"templates/kube_mode_serviceaccount.yaml"})
+
+	var sa corev1.ServiceAccount
+	helm.UnmarshalK8SYaml(t, output, &sa)
+
+	assert.Equal(t, "arn:aws:iam::123456789012:role/sample-role", sa.Annotations["eks.amazonaws.com/role-arn"], "Annotations should be arn:aws:iam::123456789012:role/sample-role")
+}
+
 func TestTemplateRenderedAutoScalingRunnerSet_DinD_ExtraVolumes(t *testing.T) {
 	t.Parallel()
 
@@ -767,7 +802,7 @@ func TestTemplateRenderedAutoScalingRunnerSet_DinD_ExtraVolumes(t *testing.T) {
 	helm.UnmarshalK8SYaml(t, output, &ars)
 
 	assert.Len(t, ars.Spec.Template.Spec.Volumes, 5, "Volumes should be 5")
-	assert.Equal(t, "dind-cert", ars.Spec.Template.Spec.Volumes[0].Name, "Volume name should be dind-cert")
+	assert.Equal(t, "dind-sock", ars.Spec.Template.Spec.Volumes[0].Name, "Volume name should be dind-sock")
 	assert.Equal(t, "dind-externals", ars.Spec.Template.Spec.Volumes[1].Name, "Volume name should be dind-externals")
 	assert.Equal(t, "work", ars.Spec.Template.Spec.Volumes[2].Name, "Volume name should be work")
 	assert.Equal(t, "/data", ars.Spec.Template.Spec.Volumes[2].HostPath.Path, "Volume host path should be /data")
@@ -840,7 +875,7 @@ func TestTemplateRenderedAutoScalingRunnerSet_EnableDinD(t *testing.T) {
 	assert.Equal(t, namespaceName, ars.Namespace)
 	assert.Equal(t, "test-runners", ars.Name)
 
-	assert.Equal(t, "gha-rs", ars.Labels["app.kubernetes.io/name"])
+	assert.Equal(t, "test-runners", ars.Labels["app.kubernetes.io/name"])
 	assert.Equal(t, "test-runners", ars.Labels["app.kubernetes.io/instance"])
 	assert.Equal(t, "https://github.com/actions", ars.Spec.GitHubConfigUrl)
 	assert.Equal(t, "test-runners-gha-rs-github-secret", ars.Spec.GitHubConfigSecret)
@@ -863,40 +898,35 @@ func TestTemplateRenderedAutoScalingRunnerSet_EnableDinD(t *testing.T) {
 	assert.Len(t, ars.Spec.Template.Spec.Containers, 2, "Template.Spec should have 2 container")
 	assert.Equal(t, "runner", ars.Spec.Template.Spec.Containers[0].Name)
 	assert.Equal(t, "ghcr.io/actions/actions-runner:latest", ars.Spec.Template.Spec.Containers[0].Image)
-	assert.Len(t, ars.Spec.Template.Spec.Containers[0].Env, 4, "The runner container should have 4 env vars, DOCKER_HOST, DOCKER_TLS_VERIFY, DOCKER_CERT_PATH and RUNNER_WAIT_FOR_DOCKER_IN_SECONDS")
+	assert.Len(t, ars.Spec.Template.Spec.Containers[0].Env, 2, "The runner container should have 2 env vars, DOCKER_HOST and RUNNER_WAIT_FOR_DOCKER_IN_SECONDS")
 	assert.Equal(t, "DOCKER_HOST", ars.Spec.Template.Spec.Containers[0].Env[0].Name)
-	assert.Equal(t, "tcp://localhost:2376", ars.Spec.Template.Spec.Containers[0].Env[0].Value)
+	assert.Equal(t, "unix:///var/run/docker.sock", ars.Spec.Template.Spec.Containers[0].Env[0].Value)
-	assert.Equal(t, "DOCKER_TLS_VERIFY", ars.Spec.Template.Spec.Containers[0].Env[1].Name)
+	assert.Equal(t, "RUNNER_WAIT_FOR_DOCKER_IN_SECONDS", ars.Spec.Template.Spec.Containers[0].Env[1].Name)
-	assert.Equal(t, "1", ars.Spec.Template.Spec.Containers[0].Env[1].Value)
+	assert.Equal(t, "120", ars.Spec.Template.Spec.Containers[0].Env[1].Value)
-	assert.Equal(t, "DOCKER_CERT_PATH", ars.Spec.Template.Spec.Containers[0].Env[2].Name)
-	assert.Equal(t, "/certs/client", ars.Spec.Template.Spec.Containers[0].Env[2].Value)
-	assert.Equal(t, "RUNNER_WAIT_FOR_DOCKER_IN_SECONDS", ars.Spec.Template.Spec.Containers[0].Env[3].Name)
-	assert.Equal(t, "120", ars.Spec.Template.Spec.Containers[0].Env[3].Value)
 
-	assert.Len(t, ars.Spec.Template.Spec.Containers[0].VolumeMounts, 2, "The runner container should have 2 volume mounts, dind-cert and work")
+	assert.Len(t, ars.Spec.Template.Spec.Containers[0].VolumeMounts, 2, "The runner container should have 2 volume mounts, dind-sock and work")
 	assert.Equal(t, "work", ars.Spec.Template.Spec.Containers[0].VolumeMounts[0].Name)
 	assert.Equal(t, "/home/runner/_work", ars.Spec.Template.Spec.Containers[0].VolumeMounts[0].MountPath)
 	assert.False(t, ars.Spec.Template.Spec.Containers[0].VolumeMounts[0].ReadOnly)
 
-	assert.Equal(t, "dind-cert", ars.Spec.Template.Spec.Containers[0].VolumeMounts[1].Name)
+	assert.Equal(t, "dind-sock", ars.Spec.Template.Spec.Containers[0].VolumeMounts[1].Name)
-	assert.Equal(t, "/certs/client", ars.Spec.Template.Spec.Containers[0].VolumeMounts[1].MountPath)
+	assert.Equal(t, "/var/run", ars.Spec.Template.Spec.Containers[0].VolumeMounts[1].MountPath)
-	assert.True(t, ars.Spec.Template.Spec.Containers[0].VolumeMounts[1].ReadOnly)
 
 	assert.Equal(t, "dind", ars.Spec.Template.Spec.Containers[1].Name)
 	assert.Equal(t, "docker:dind", ars.Spec.Template.Spec.Containers[1].Image)
 	assert.True(t, *ars.Spec.Template.Spec.Containers[1].SecurityContext.Privileged)
-	assert.Len(t, ars.Spec.Template.Spec.Containers[1].VolumeMounts, 3, "The dind container should have 3 volume mounts, dind-cert, work and externals")
+	assert.Len(t, ars.Spec.Template.Spec.Containers[1].VolumeMounts, 3, "The dind container should have 3 volume mounts, dind-sock, work and externals")
 	assert.Equal(t, "work", ars.Spec.Template.Spec.Containers[1].VolumeMounts[0].Name)
 	assert.Equal(t, "/home/runner/_work", ars.Spec.Template.Spec.Containers[1].VolumeMounts[0].MountPath)
 
-	assert.Equal(t, "dind-cert", ars.Spec.Template.Spec.Containers[1].VolumeMounts[1].Name)
+	assert.Equal(t, "dind-sock", ars.Spec.Template.Spec.Containers[1].VolumeMounts[1].Name)
-	assert.Equal(t, "/certs/client", ars.Spec.Template.Spec.Containers[1].VolumeMounts[1].MountPath)
+	assert.Equal(t, "/var/run", ars.Spec.Template.Spec.Containers[1].VolumeMounts[1].MountPath)
 
 	assert.Equal(t, "dind-externals", ars.Spec.Template.Spec.Containers[1].VolumeMounts[2].Name)
 	assert.Equal(t, "/home/runner/externals", ars.Spec.Template.Spec.Containers[1].VolumeMounts[2].MountPath)
 
 	assert.Len(t, ars.Spec.Template.Spec.Volumes, 3, "Volumes should be 3")
-	assert.Equal(t, "dind-cert", ars.Spec.Template.Spec.Volumes[0].Name, "Volume name should be dind-cert")
+	assert.Equal(t, "dind-sock", ars.Spec.Template.Spec.Volumes[0].Name, "Volume name should be dind-sock")
 	assert.Equal(t, "dind-externals", ars.Spec.Template.Spec.Volumes[1].Name, "Volume name should be dind-externals")
 	assert.Equal(t, "work", ars.Spec.Template.Spec.Volumes[2].Name, "Volume name should be work")
 	assert.NotNil(t, ars.Spec.Template.Spec.Volumes[2].EmptyDir, "Volume work should be an emptyDir")
@@ -932,7 +962,7 @@ func TestTemplateRenderedAutoScalingRunnerSet_EnableKubernetesMode(t *testing.T)
 	assert.Equal(t, namespaceName, ars.Namespace)
 	assert.Equal(t, "test-runners", ars.Name)
 
-	assert.Equal(t, "gha-rs", ars.Labels["app.kubernetes.io/name"])
+	assert.Equal(t, "test-runners", ars.Labels["app.kubernetes.io/name"])
 	assert.Equal(t, "test-runners", ars.Labels["app.kubernetes.io/instance"])
 	assert.Equal(t, "https://github.com/actions", ars.Spec.GitHubConfigUrl)
 	assert.Equal(t, "test-runners-gha-rs-github-secret", ars.Spec.GitHubConfigSecret)
@@ -960,6 +990,50 @@ func TestTemplateRenderedAutoScalingRunnerSet_EnableKubernetesMode(t *testing.T)
 	assert.NotNil(t, ars.Spec.Template.Spec.Volumes[0].Ephemeral, "Template.Spec should have 1 ephemeral volume")
 }
 
+func TestTemplateRenderedAutoscalingRunnerSet_ListenerPodTemplate(t *testing.T) {
+	t.Parallel()
+
+	// Path to the helm chart we will test
+	helmChartPath, err := filepath.Abs("../../gha-runner-scale-set")
+	require.NoError(t, err)
+
+	testValuesPath, err := filepath.Abs("../tests/values_listener_template.yaml")
+	require.NoError(t, err)
+
+	releaseName := "test-runners"
+	namespaceName := "test-" + strings.ToLower(random.UniqueId())
+
+	options := &helm.Options{
+		Logger: logger.Discard,
+		SetValues: map[string]string{
+			"controllerServiceAccount.name":      "arc",
+			"controllerServiceAccount.namespace": "arc-system",
+		},
+		ValuesFiles:    []string{testValuesPath},
+		KubectlOptions: k8s.NewKubectlOptions("", "", namespaceName),
+	}
+
+	output := helm.RenderTemplate(t, options, helmChartPath, releaseName, []string{"templates/autoscalingrunnerset.yaml"})
+
+	var ars v1alpha1.AutoscalingRunnerSet
+	helm.UnmarshalK8SYaml(t, output, &ars)
+
+	require.NotNil(t, ars.Spec.ListenerTemplate, "ListenerPodTemplate should not be nil")
+
+	assert.Equal(t, ars.Spec.ListenerTemplate.Spec.Hostname, "example")
+
+	require.Len(t, ars.Spec.ListenerTemplate.Spec.Containers, 2, "ListenerPodTemplate should have 2 containers")
+	assert.Equal(t, ars.Spec.ListenerTemplate.Spec.Containers[0].Name, "listener")
+	assert.Equal(t, ars.Spec.ListenerTemplate.Spec.Containers[0].Image, "listener:latest")
+	assert.ElementsMatch(t, ars.Spec.ListenerTemplate.Spec.Containers[0].Command, []string{"/path/to/entrypoint"})
+	assert.Len(t, ars.Spec.ListenerTemplate.Spec.Containers[0].VolumeMounts, 1, "VolumeMounts should be 1")
+	assert.Equal(t, ars.Spec.ListenerTemplate.Spec.Containers[0].VolumeMounts[0].Name, "work")
+	assert.Equal(t, ars.Spec.ListenerTemplate.Spec.Containers[0].VolumeMounts[0].MountPath, "/home/example")
+
+	assert.Equal(t, ars.Spec.ListenerTemplate.Spec.Containers[1].Name, "side-car")
+	assert.Equal(t, ars.Spec.ListenerTemplate.Spec.Containers[1].Image, "nginx:latest")
+}
+
 func TestTemplateRenderedAutoScalingRunnerSet_UsePredefinedSecret(t *testing.T) {
 	t.Parallel()
 
@@ -989,7 +1063,7 @@ func TestTemplateRenderedAutoScalingRunnerSet_UsePredefinedSecret(t *testing.T)
 	assert.Equal(t, namespaceName, ars.Namespace)
 	assert.Equal(t, "test-runners", ars.Name)
 
-	assert.Equal(t, "gha-rs", ars.Labels["app.kubernetes.io/name"])
+	assert.Equal(t, "test-runners", ars.Labels["app.kubernetes.io/name"])
 	assert.Equal(t, "test-runners", ars.Labels["app.kubernetes.io/instance"])
 	assert.Equal(t, "https://github.com/actions", ars.Spec.GitHubConfigUrl)
 	assert.Equal(t, "pre-defined-secrets", ars.Spec.GitHubConfigSecret)
@@ -1672,6 +1746,53 @@ func TestTemplateRenderedAutoScalingRunnerSet_ExtraContainers(t *testing.T) {
 	assert.Equal(t, "192.0.2.1", ars.Spec.Template.Spec.DNSConfig.Nameservers[0], "DNS Nameserver should be set")
 }
 
+func TestTemplateRenderedAutoScalingRunnerSet_RestartPolicy(t *testing.T) {
+	t.Parallel()
+
+	// Path to the helm chart we will test
+	helmChartPath, err := filepath.Abs("../../gha-runner-scale-set")
+	require.NoError(t, err)
+
+	releaseName := "test-runners"
+	namespaceName := "test-" + strings.ToLower(random.UniqueId())
+
+	options := &helm.Options{
+		Logger: logger.Discard,
+		SetValues: map[string]string{
+			"githubConfigUrl":                    "https://github.com/actions",
+			"githubConfigSecret.github_token":    "gh_token12345",
+			"controllerServiceAccount.name":      "arc",
+			"controllerServiceAccount.namespace": "arc-system",
+		},
+		KubectlOptions: k8s.NewKubectlOptions("", "", namespaceName),
+	}
+
+	output := helm.RenderTemplate(t, options, helmChartPath, releaseName, []string{"templates/autoscalingrunnerset.yaml"})
+
+	var ars v1alpha1.AutoscalingRunnerSet
+	helm.UnmarshalK8SYaml(t, output, &ars)
+
+	assert.Equal(t, corev1.RestartPolicyNever, ars.Spec.Template.Spec.RestartPolicy, "RestartPolicy should be Never")
+
+	options = &helm.Options{
+		Logger: logger.Discard,
+		SetValues: map[string]string{
+			"githubConfigUrl":                    "https://github.com/actions",
+			"githubConfigSecret.github_token":    "gh_token12345",
+			"controllerServiceAccount.name":      "arc",
+			"controllerServiceAccount.namespace": "arc-system",
+			"template.spec.restartPolicy":        "Always",
+		},
+		KubectlOptions: k8s.NewKubectlOptions("", "", namespaceName),
+	}
+
+	output = helm.RenderTemplate(t, options, helmChartPath, releaseName, []string{"templates/autoscalingrunnerset.yaml"}, "--debug")
+
+	helm.UnmarshalK8SYaml(t, output, &ars)
+
+	assert.Equal(t, corev1.RestartPolicyAlways, ars.Spec.Template.Spec.RestartPolicy, "RestartPolicy should be Always")
+}
+
 func TestTemplateRenderedAutoScalingRunnerSet_ExtraPodSpec(t *testing.T) {
 	t.Parallel()
 
@@ -1742,10 +1863,6 @@ func TestTemplateRenderedAutoScalingRunnerSet_DinDMergePodSpec(t *testing.T) {
 	assert.Equal(t, "tcp://localhost:9999", ars.Spec.Template.Spec.Containers[0].Env[0].Value, "DOCKER_HOST should be set to `tcp://localhost:9999`")
 	assert.Equal(t, "MY_NODE_NAME", ars.Spec.Template.Spec.Containers[0].Env[1].Name, "MY_NODE_NAME should be set")
 	assert.Equal(t, "spec.nodeName", ars.Spec.Template.Spec.Containers[0].Env[1].ValueFrom.FieldRef.FieldPath, "MY_NODE_NAME should be set to `spec.nodeName`")
-	assert.Equal(t, "DOCKER_TLS_VERIFY", ars.Spec.Template.Spec.Containers[0].Env[2].Name, "DOCKER_TLS_VERIFY should be set")
-	assert.Equal(t, "1", ars.Spec.Template.Spec.Containers[0].Env[2].Value, "DOCKER_TLS_VERIFY should be set to `1`")
-	assert.Equal(t, "DOCKER_CERT_PATH", ars.Spec.Template.Spec.Containers[0].Env[3].Name, "DOCKER_CERT_PATH should be set")
-	assert.Equal(t, "/certs/client", ars.Spec.Template.Spec.Containers[0].Env[3].Value, "DOCKER_CERT_PATH should be set to `/certs/client`")
 	assert.Equal(t, "work", ars.Spec.Template.Spec.Containers[0].VolumeMounts[0].Name, "VolumeMount name should be work")
 	assert.Equal(t, "/work", ars.Spec.Template.Spec.Containers[0].VolumeMounts[0].MountPath, "VolumeMount mountPath should be /work")
 	assert.Equal(t, "others", ars.Spec.Template.Spec.Containers[0].VolumeMounts[1].Name, "VolumeMount name should be others")
@@ -1899,3 +2016,130 @@ func TestTemplateRenderedAutoscalingRunnerSetAnnotation_KubernetesModeCleanup(t
 		assert.Equal(t, value, autoscalingRunnerSet.Annotations[annotation], fmt.Sprintf("Annotation %q does not match the expected value", annotation))
 	}
 }
+
+func TestRunnerContainerEnvNotEmptyMap(t *testing.T) {
+	t.Parallel()
+
+	// Path to the helm chart we will test
+	helmChartPath, err := filepath.Abs("../../gha-runner-scale-set")
+	require.NoError(t, err)
+
+	testValuesPath, err := filepath.Abs("../tests/values.yaml")
+	require.NoError(t, err)
+
+	releaseName := "test-runners"
+	namespaceName := "test-" + strings.ToLower(random.UniqueId())
+
+	options := &helm.Options{
+		Logger:         logger.Discard,
+		ValuesFiles:    []string{testValuesPath},
+		KubectlOptions: k8s.NewKubectlOptions("", "", namespaceName),
+	}
+
+	output := helm.RenderTemplate(t, options, helmChartPath, releaseName, []string{"templates/autoscalingrunnerset.yaml"})
+	type testModel struct {
+		Spec struct {
+			Template struct {
+				Spec struct {
+					Containers []map[string]any `yaml:"containers"`
+				} `yaml:"spec"`
+			} `yaml:"template"`
+		} `yaml:"spec"`
+	}
+
+	var m testModel
+	helm.UnmarshalK8SYaml(t, output, &m)
+	_, ok := m.Spec.Template.Spec.Containers[0]["env"]
+	assert.False(t, ok, "env should not be set")
+}
+
+func TestRunnerContainerVolumeNotEmptyMap(t *testing.T) {
+	t.Parallel()
+
+	// Path to the helm chart we will test
+	helmChartPath, err := filepath.Abs("../../gha-runner-scale-set")
+	require.NoError(t, err)
+
+	testValuesPath, err := filepath.Abs("../tests/values.yaml")
+	require.NoError(t, err)
+
+	releaseName := "test-runners"
+	namespaceName := "test-" + strings.ToLower(random.UniqueId())
+
+	options := &helm.Options{
+		Logger:         logger.Discard,
+		ValuesFiles:    []string{testValuesPath},
+		KubectlOptions: k8s.NewKubectlOptions("", "", namespaceName),
+	}
+
+	output := helm.RenderTemplate(t, options, helmChartPath, releaseName, []string{"templates/autoscalingrunnerset.yaml"})
+	type testModel struct {
+		Spec struct {
+			Template struct {
+				Spec struct {
+					Containers []map[string]any `yaml:"containers"`
+				} `yaml:"spec"`
+			} `yaml:"template"`
+		} `yaml:"spec"`
+	}
+
+	var m testModel
+	helm.UnmarshalK8SYaml(t, output, &m)
+	_, ok := m.Spec.Template.Spec.Containers[0]["volumeMounts"]
+	assert.False(t, ok, "volumeMounts should not be set")
+}
+
+func TestAutoscalingRunnerSetAnnotationValuesHash(t *testing.T) {
+	t.Parallel()
+
+	const valuesHash = "actions.github.com/values-hash"
+
+	// Path to the helm chart we will test
+	helmChartPath, err := filepath.Abs("../../gha-runner-scale-set")
+	require.NoError(t, err)
+
+	releaseName := "test-runners"
+	namespaceName := "test-" + strings.ToLower(random.UniqueId())
+
+	options := &helm.Options{
+		Logger: logger.Discard,
+		SetValues: map[string]string{
+			"githubConfigUrl":                    "https://github.com/actions",
+			"githubConfigSecret.github_token":    "gh_token12345",
+			"controllerServiceAccount.name":      "arc",
+			"controllerServiceAccount.namespace": "arc-system",
+		},
+		KubectlOptions: k8s.NewKubectlOptions("", "", namespaceName),
+	}
+
+	output := helm.RenderTemplate(t, options, helmChartPath, releaseName, []string{"templates/autoscalingrunnerset.yaml"})
+
+	var autoscalingRunnerSet v1alpha1.AutoscalingRunnerSet
+	helm.UnmarshalK8SYaml(t, output, &autoscalingRunnerSet)
+
+	firstHash := autoscalingRunnerSet.Annotations["actions.github.com/values-hash"]
+	assert.NotEmpty(t, firstHash)
+	assert.LessOrEqual(t, len(firstHash), 63)
+
+	helmChartPath, err = filepath.Abs("../../gha-runner-scale-set")
+	require.NoError(t, err)
+
+	options = &helm.Options{
+		Logger: logger.Discard,
+		SetValues: map[string]string{
+			"githubConfigUrl":                    "https://github.com/actions",
+			"githubConfigSecret.github_token":    "gh_token1234567890",
+			"controllerServiceAccount.name":      "arc",
+			"controllerServiceAccount.namespace": "arc-system",
+		},
+		KubectlOptions: k8s.NewKubectlOptions("", "", namespaceName),
+	}
+
+	output = helm.RenderTemplate(t, options, helmChartPath, releaseName, []string{"templates/autoscalingrunnerset.yaml"})
+
+	helm.UnmarshalK8SYaml(t, output, &autoscalingRunnerSet)
+	secondHash := autoscalingRunnerSet.Annotations[valuesHash]
+	assert.NotEmpty(t, secondHash)
+	assert.NotEqual(t, firstHash, secondHash)
+	assert.LessOrEqual(t, len(secondHash), 63)
+}

charts/gha-runner-scale-set/tests/values_k8s_merge_spec.yaml

@@ -28,4 +28,4 @@ template:
         path: /data
         type: Directory
 containerMode:
-  type: kubernetes
+  type: kubernetes

charts/gha-runner-scale-set/tests/values_kubernetes_mode_service_account_annotations.yaml

@@ -0,0 +1,8 @@
+githubConfigUrl: https://github.com/actions/actions-runner-controller
+githubConfigSecret:
+  github_token: test
+containerMode:
+  type: kubernetes
+  kubernetesModeServiceAccount:
+    annotations:
+      eks.amazonaws.com/role-arn: arn:aws:iam::123456789012:role/sample-role

charts/gha-runner-scale-set/tests/values_listener_template.yaml

@@ -0,0 +1,15 @@
+githubConfigUrl: https://github.com/actions/actions-runner-controller
+githubConfigSecret:
+  github_token: test
+listenerTemplate:
+  spec:
+    hostname: "example"
+    containers:
+    - name: listener
+      image: listener:latest
+      command: ["/path/to/entrypoint"]
+      volumeMounts:
+      - name: work
+        mountPath: /home/example
+    - name: side-car
+      image: nginx:latest

charts/gha-runner-scale-set/values.yaml

@@ -36,10 +36,11 @@ githubConfigSecret:
 #     - example.com
 #     - example.org
 
-## maxRunners is the max number of runners the auto scaling runner set will scale up to.
+## maxRunners is the max number of runners the autoscaling runner set will scale up to.
 # maxRunners: 5
 
-## minRunners is the min number of runners the auto scaling runner set will scale down to.
+## minRunners is the min number of idle runners. The target number of runners created will be
+## calculated as a sum of minRunners and the number of jobs assigned to the scale set.
 # minRunners: 0
 
 # runnerGroup: "default"
@@ -68,7 +69,7 @@ githubConfigSecret:
 #       key: ca.crt
 #   runnerMountPath: /usr/local/share/ca-certificates/
 
-## Container mode is is an object that provides out-of-box configuration
+## Container mode is an object that provides out-of-box configuration
 ## for dind and kubernetes mode. Template will be modified as documented under the
 ## template object.
 ##
@@ -84,8 +85,28 @@ githubConfigSecret:
 #     resources:
 #       requests:
 #         storage: 1Gi
+#   kubernetesModeServiceAccount:
+#     annotations:
+
+## listenerTemplate is the PodSpec for each listener Pod
+## For reference: https://kubernetes.io/docs/reference/kubernetes-api/workload-resources/pod-v1/#PodSpec
+# listenerTemplate:
+#   spec:
+#     containers:
+#     # Use this section to append additional configuration to the listener container.
+#     # If you change the name of the container, the configuration will not be applied to the listener,
+#     # and it will be treated as a side-car container.
+#     - name: listener
+#       securityContext:
+#         runAsUser: 1000
+#     # Use this section to add the configuration of a side-car container.
+#     # Comment it out or remove it if you don't need it.
+#     # Spec for this container will be applied as is without any modifications.
+#     - name: side-car
+#       image: example-sidecar
 
 ## template is the PodSpec for each runner Pod
+## For reference: https://kubernetes.io/docs/reference/kubernetes-api/workload-resources/pod-v1/#PodSpec
 template:
   ## template.spec will be modified if you change the container mode
   ## with containerMode.type=dind, we will populate the template.spec with following pod spec
@@ -101,34 +122,37 @@ template:
   ##     containers:
   ##     - name: runner
   ##       image: ghcr.io/actions/actions-runner:latest
+  ##       command: ["/home/runner/run.sh"]
   ##       env:
   ##         - name: DOCKER_HOST
-  ##           value: tcp://localhost:2376
+  ##           value: unix:///var/run/docker.sock
-  ##         - name: DOCKER_TLS_VERIFY
-  ##           value: "1"
-  ##         - name: DOCKER_CERT_PATH
-  ##           value: /certs/client
   ##       volumeMounts:
   ##         - name: work
   ##           mountPath: /home/runner/_work
-  ##         - name: dind-cert
+  ##         - name: dind-sock
-  ##           mountPath: /certs/client
+  ##           mountPath: /var/run
-  ##           readOnly: true
   ##     - name: dind
   ##       image: docker:dind
+  ##       args:
+  ##         - dockerd
+  ##         - --host=unix:///var/run/docker.sock
+  ##         - --group=$(DOCKER_GROUP_GID)
+  ##       env:
+  ##         - name: DOCKER_GROUP_GID
+  ##           value: "123"
   ##       securityContext:
   ##         privileged: true
   ##       volumeMounts:
   ##         - name: work
   ##           mountPath: /home/runner/_work
-  ##         - name: dind-cert
+  ##         - name: dind-sock
-  ##           mountPath: /certs/client
+  ##           mountPath: /var/run
   ##         - name: dind-externals
   ##           mountPath: /home/runner/externals
   ##     volumes:
   ##     - name: work
   ##       emptyDir: {}
-  ##     - name: dind-cert
+  ##     - name: dind-sock
   ##       emptyDir: {}
   ##     - name: dind-externals
   ##       emptyDir: {}
@@ -139,6 +163,7 @@ template:
   ##     containers:
   ##     - name: runner
   ##       image: ghcr.io/actions/actions-runner:latest
+  ##       command: ["/home/runner/run.sh"]
   ##       env:
   ##         - name: ACTIONS_RUNNER_CONTAINER_HOOKS
   ##           value: /home/runner/k8s/index.js
@@ -163,9 +188,9 @@ template:
   ##                   storage: 1Gi
   spec:
     containers:
-    - name: runner
+      - name: runner
-      image: ghcr.io/actions/actions-runner:latest
+        image: ghcr.io/actions/actions-runner:latest
-      command: ["/home/runner/run.sh"]
+        command: ["/home/runner/run.sh"]
 
 ## Optional controller service account that needs to have required Role and RoleBinding
 ## to operate this gha-runner-scale-set installation.

cmd/ghalistener/app/app.go

@@ -0,0 +1,137 @@
+package app
+
+import (
+	"context"
+	"errors"
+	"fmt"
+
+	"github.com/actions/actions-runner-controller/cmd/ghalistener/config"
+	"github.com/actions/actions-runner-controller/cmd/ghalistener/listener"
+	"github.com/actions/actions-runner-controller/cmd/ghalistener/metrics"
+	"github.com/actions/actions-runner-controller/cmd/ghalistener/worker"
+	"github.com/actions/actions-runner-controller/github/actions"
+	"github.com/go-logr/logr"
+	"golang.org/x/sync/errgroup"
+)
+
+// App is responsible for initializing required components and running the app.
+type App struct {
+	// configured fields
+	config config.Config
+	logger logr.Logger
+
+	// initialized fields
+	listener Listener
+	worker   Worker
+	metrics  metrics.ServerPublisher
+}
+
+//go:generate mockery --name Listener --output ./mocks --outpkg mocks --case underscore
+type Listener interface {
+	Listen(ctx context.Context, handler listener.Handler) error
+}
+
+//go:generate mockery --name Worker --output ./mocks --outpkg mocks --case underscore
+type Worker interface {
+	HandleJobStarted(ctx context.Context, jobInfo *actions.JobStarted) error
+	HandleDesiredRunnerCount(ctx context.Context, count int, jobsCompleted int) (int, error)
+}
+
+func New(config config.Config) (*App, error) {
+	app := &App{
+		config: config,
+	}
+
+	ghConfig, err := actions.ParseGitHubConfigFromURL(config.ConfigureUrl)
+	if err != nil {
+		return nil, fmt.Errorf("failed to parse GitHub config from URL: %w", err)
+	}
+
+	{
+		logger, err := config.Logger()
+		if err != nil {
+			return nil, fmt.Errorf("failed to create logger: %w", err)
+		}
+		app.logger = logger.WithName("listener-app")
+	}
+
+	actionsClient, err := config.ActionsClient(app.logger)
+	if err != nil {
+		return nil, fmt.Errorf("failed to create actions client: %w", err)
+	}
+
+	if config.MetricsAddr != "" {
+		app.metrics = metrics.NewExporter(metrics.ExporterConfig{
+			ScaleSetName:      config.EphemeralRunnerSetName,
+			ScaleSetNamespace: config.EphemeralRunnerSetNamespace,
+			Enterprise:        ghConfig.Enterprise,
+			Organization:      ghConfig.Organization,
+			Repository:        ghConfig.Repository,
+			ServerAddr:        config.MetricsAddr,
+			ServerEndpoint:    config.MetricsEndpoint,
+		})
+	}
+
+	worker, err := worker.New(
+		worker.Config{
+			EphemeralRunnerSetNamespace: config.EphemeralRunnerSetNamespace,
+			EphemeralRunnerSetName:      config.EphemeralRunnerSetName,
+			MaxRunners:                  config.MaxRunners,
+			MinRunners:                  config.MinRunners,
+		},
+		worker.WithLogger(app.logger.WithName("worker")),
+	)
+	if err != nil {
+		return nil, fmt.Errorf("failed to create new kubernetes worker: %w", err)
+	}
+	app.worker = worker
+
+	listener, err := listener.New(listener.Config{
+		Client:     actionsClient,
+		ScaleSetID: app.config.RunnerScaleSetId,
+		MinRunners: app.config.MinRunners,
+		MaxRunners: app.config.MaxRunners,
+		Logger:     app.logger.WithName("listener"),
+		Metrics:    app.metrics,
+	})
+	if err != nil {
+		return nil, fmt.Errorf("failed to create new listener: %w", err)
+	}
+	app.listener = listener
+
+	app.logger.Info("app initialized")
+
+	return app, nil
+}
+
+func (app *App) Run(ctx context.Context) error {
+	var errs []error
+	if app.worker == nil {
+		errs = append(errs, fmt.Errorf("worker not initialized"))
+	}
+	if app.listener == nil {
+		errs = append(errs, fmt.Errorf("listener not initialized"))
+	}
+	if err := errors.Join(errs...); err != nil {
+		return fmt.Errorf("app not initialized: %w", err)
+	}
+
+	g, ctx := errgroup.WithContext(ctx)
+	metricsCtx, cancelMetrics := context.WithCancelCause(ctx)
+
+	g.Go(func() error {
+		app.logger.Info("Starting listener")
+		listnerErr := app.listener.Listen(ctx, app.worker)
+		cancelMetrics(fmt.Errorf("Listener exited: %w", listnerErr))
+		return listnerErr
+	})
+
+	if app.metrics != nil {
+		g.Go(func() error {
+			app.logger.Info("Starting metrics server")
+			return app.metrics.ListenAndServe(metricsCtx)
+		})
+	}
+
+	return g.Wait()
+}

cmd/ghalistener/app/app_test.go

@@ -0,0 +1,85 @@
+package app
+
+import (
+	"context"
+	"errors"
+	"testing"
+
+	appmocks "github.com/actions/actions-runner-controller/cmd/ghalistener/app/mocks"
+	"github.com/actions/actions-runner-controller/cmd/ghalistener/listener"
+	metricsMocks "github.com/actions/actions-runner-controller/cmd/ghalistener/metrics/mocks"
+	"github.com/actions/actions-runner-controller/cmd/ghalistener/worker"
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/mock"
+)
+
+func TestApp_Run(t *testing.T) {
+	t.Parallel()
+
+	t.Run("ListenerWorkerGuard", func(t *testing.T) {
+		invalidApps := []*App{
+			{},
+			{worker: &worker.Worker{}},
+			{listener: &listener.Listener{}},
+		}
+
+		for _, app := range invalidApps {
+			assert.Error(t, app.Run(context.Background()))
+		}
+	})
+
+	t.Run("ExitsOnListenerError", func(t *testing.T) {
+		listener := appmocks.NewListener(t)
+		worker := appmocks.NewWorker(t)
+
+		listener.On("Listen", mock.Anything, mock.Anything).Return(errors.New("listener error")).Once()
+
+		app := &App{
+			listener: listener,
+			worker:   worker,
+		}
+
+		err := app.Run(context.Background())
+		assert.Error(t, err)
+	})
+
+	t.Run("ExitsOnListenerNil", func(t *testing.T) {
+		listener := appmocks.NewListener(t)
+		worker := appmocks.NewWorker(t)
+
+		listener.On("Listen", mock.Anything, mock.Anything).Return(nil).Once()
+
+		app := &App{
+			listener: listener,
+			worker:   worker,
+		}
+
+		err := app.Run(context.Background())
+		assert.NoError(t, err)
+	})
+
+	t.Run("CancelListenerOnMetricsServerError", func(t *testing.T) {
+		listener := appmocks.NewListener(t)
+		worker := appmocks.NewWorker(t)
+		metrics := metricsMocks.NewServerPublisher(t)
+		ctx := context.Background()
+
+		listener.On("Listen", mock.Anything, mock.Anything).Run(func(args mock.Arguments) {
+			ctx := args.Get(0).(context.Context)
+			go func() {
+				<-ctx.Done()
+			}()
+		}).Return(nil).Once()
+
+		metrics.On("ListenAndServe", mock.Anything).Return(errors.New("metrics server error")).Once()
+
+		app := &App{
+			listener: listener,
+			worker:   worker,
+			metrics:  metrics,
+		}
+
+		err := app.Run(ctx)
+		assert.Error(t, err)
+	})
+}

cmd/ghalistener/app/mocks/listener.go

@@ -0,0 +1,43 @@
+// Code generated by mockery v2.36.1. DO NOT EDIT.
+
+package mocks
+
+import (
+	context "context"
+
+	listener "github.com/actions/actions-runner-controller/cmd/ghalistener/listener"
+	mock "github.com/stretchr/testify/mock"
+)
+
+// Listener is an autogenerated mock type for the Listener type
+type Listener struct {
+	mock.Mock
+}
+
+// Listen provides a mock function with given fields: ctx, handler
+func (_m *Listener) Listen(ctx context.Context, handler listener.Handler) error {
+	ret := _m.Called(ctx, handler)
+
+	var r0 error
+	if rf, ok := ret.Get(0).(func(context.Context, listener.Handler) error); ok {
+		r0 = rf(ctx, handler)
+	} else {
+		r0 = ret.Error(0)
+	}
+
+	return r0
+}
+
+// NewListener creates a new instance of Listener. It also registers a testing interface on the mock and a cleanup function to assert the mocks expectations.
+// The first argument is typically a *testing.T value.
+func NewListener(t interface {
+	mock.TestingT
+	Cleanup(func())
+}) *Listener {
+	mock := &Listener{}
+	mock.Mock.Test(t)
+
+	t.Cleanup(func() { mock.AssertExpectations(t) })
+
+	return mock
+}

cmd/ghalistener/app/mocks/worker.go

@@ -0,0 +1,68 @@
+// Code generated by mockery v2.36.1. DO NOT EDIT.
+
+package mocks
+
+import (
+	actions "github.com/actions/actions-runner-controller/github/actions"
+
+	context "context"
+
+	mock "github.com/stretchr/testify/mock"
+)
+
+// Worker is an autogenerated mock type for the Worker type
+type Worker struct {
+	mock.Mock
+}
+
+// HandleDesiredRunnerCount provides a mock function with given fields: ctx, count, acquireCount
+func (_m *Worker) HandleDesiredRunnerCount(ctx context.Context, count int, acquireCount int) (int, error) {
+	ret := _m.Called(ctx, count, acquireCount)
+
+	var r0 int
+	var r1 error
+	if rf, ok := ret.Get(0).(func(context.Context, int, int) (int, error)); ok {
+		return rf(ctx, count, acquireCount)
+	}
+	if rf, ok := ret.Get(0).(func(context.Context, int, int) int); ok {
+		r0 = rf(ctx, count, acquireCount)
+	} else {
+		r0 = ret.Get(0).(int)
+	}
+
+	if rf, ok := ret.Get(1).(func(context.Context, int, int) error); ok {
+		r1 = rf(ctx, count, acquireCount)
+	} else {
+		r1 = ret.Error(1)
+	}
+
+	return r0, r1
+}
+
+// HandleJobStarted provides a mock function with given fields: ctx, jobInfo
+func (_m *Worker) HandleJobStarted(ctx context.Context, jobInfo *actions.JobStarted) error {
+	ret := _m.Called(ctx, jobInfo)
+
+	var r0 error
+	if rf, ok := ret.Get(0).(func(context.Context, *actions.JobStarted) error); ok {
+		r0 = rf(ctx, jobInfo)
+	} else {
+		r0 = ret.Error(0)
+	}
+
+	return r0
+}
+
+// NewWorker creates a new instance of Worker. It also registers a testing interface on the mock and a cleanup function to assert the mocks expectations.
+// The first argument is typically a *testing.T value.
+func NewWorker(t interface {
+	mock.TestingT
+	Cleanup(func())
+}) *Worker {
+	mock := &Worker{}
+	mock.Mock.Test(t)
+
+	t.Cleanup(func() { mock.AssertExpectations(t) })
+
+	return mock
+}

cmd/ghalistener/config/config.go

@@ -0,0 +1,161 @@
+package config
+
+import (
+	"crypto/x509"
+	"encoding/json"
+	"fmt"
+	"net/http"
+	"net/url"
+	"os"
+
+	"github.com/actions/actions-runner-controller/build"
+	"github.com/actions/actions-runner-controller/github/actions"
+	"github.com/actions/actions-runner-controller/logging"
+	"github.com/go-logr/logr"
+	"golang.org/x/net/http/httpproxy"
+)
+
+type Config struct {
+	ConfigureUrl                string `json:"configureUrl"`
+	AppID                       int64  `json:"appID"`
+	AppInstallationID           int64  `json:"appInstallationID"`
+	AppPrivateKey               string `json:"appPrivateKey"`
+	Token                       string `json:"token"`
+	EphemeralRunnerSetNamespace string `json:"ephemeralRunnerSetNamespace"`
+	EphemeralRunnerSetName      string `json:"ephemeralRunnerSetName"`
+	MaxRunners                  int    `json:"maxRunners"`
+	MinRunners                  int    `json:"minRunners"`
+	RunnerScaleSetId            int    `json:"runnerScaleSetId"`
+	RunnerScaleSetName          string `json:"runnerScaleSetName"`
+	ServerRootCA                string `json:"serverRootCA"`
+	LogLevel                    string `json:"logLevel"`
+	LogFormat                   string `json:"logFormat"`
+	MetricsAddr                 string `json:"metricsAddr"`
+	MetricsEndpoint             string `json:"metricsEndpoint"`
+}
+
+func Read(path string) (Config, error) {
+	f, err := os.Open(path)
+	if err != nil {
+		return Config{}, err
+	}
+	defer f.Close()
+
+	var config Config
+	if err := json.NewDecoder(f).Decode(&config); err != nil {
+		return Config{}, fmt.Errorf("failed to decode config: %w", err)
+	}
+
+	if err := config.validate(); err != nil {
+		return Config{}, fmt.Errorf("failed to validate config: %w", err)
+	}
+
+	return config, nil
+}
+
+func (c *Config) validate() error {
+	if len(c.ConfigureUrl) == 0 {
+		return fmt.Errorf("GitHubConfigUrl is not provided")
+	}
+
+	if len(c.EphemeralRunnerSetNamespace) == 0 || len(c.EphemeralRunnerSetName) == 0 {
+		return fmt.Errorf("EphemeralRunnerSetNamespace '%s' or EphemeralRunnerSetName '%s' is missing", c.EphemeralRunnerSetNamespace, c.EphemeralRunnerSetName)
+	}
+
+	if c.RunnerScaleSetId == 0 {
+		return fmt.Errorf("RunnerScaleSetId '%d' is missing", c.RunnerScaleSetId)
+	}
+
+	if c.MaxRunners < c.MinRunners {
+		return fmt.Errorf("MinRunners '%d' cannot be greater than MaxRunners '%d'", c.MinRunners, c.MaxRunners)
+	}
+
+	hasToken := len(c.Token) > 0
+	hasPrivateKeyConfig := c.AppID > 0 && c.AppPrivateKey != ""
+
+	if !hasToken && !hasPrivateKeyConfig {
+		return fmt.Errorf("GitHub auth credential is missing, token length: '%d', appId: '%d', installationId: '%d', private key length: '%d", len(c.Token), c.AppID, c.AppInstallationID, len(c.AppPrivateKey))
+	}
+
+	if hasToken && hasPrivateKeyConfig {
+		return fmt.Errorf("only one GitHub auth method supported at a time. Have both PAT and App auth: token length: '%d', appId: '%d', installationId: '%d', private key length: '%d", len(c.Token), c.AppID, c.AppInstallationID, len(c.AppPrivateKey))
+	}
+
+	return nil
+}
+
+func (c *Config) Logger() (logr.Logger, error) {
+	logLevel := string(logging.LogLevelDebug)
+	if c.LogLevel != "" {
+		logLevel = c.LogLevel
+	}
+
+	logFormat := string(logging.LogFormatText)
+	if c.LogFormat != "" {
+		logFormat = c.LogFormat
+	}
+
+	logger, err := logging.NewLogger(logLevel, logFormat)
+	if err != nil {
+		return logr.Logger{}, fmt.Errorf("NewLogger failed: %w", err)
+	}
+
+	return logger, nil
+}
+
+func (c *Config) ActionsClient(logger logr.Logger, clientOptions ...actions.ClientOption) (*actions.Client, error) {
+	var creds actions.ActionsAuth
+	switch c.Token {
+	case "":
+		creds.AppCreds = &actions.GitHubAppAuth{
+			AppID:             c.AppID,
+			AppInstallationID: c.AppInstallationID,
+			AppPrivateKey:     c.AppPrivateKey,
+		}
+	default:
+		creds.Token = c.Token
+	}
+
+	options := append([]actions.ClientOption{
+		actions.WithLogger(logger),
+	}, clientOptions...)
+
+	if c.ServerRootCA != "" {
+		systemPool, err := x509.SystemCertPool()
+		if err != nil {
+			return nil, fmt.Errorf("failed to load system cert pool: %w", err)
+		}
+		pool := systemPool.Clone()
+		ok := pool.AppendCertsFromPEM([]byte(c.ServerRootCA))
+		if !ok {
+			return nil, fmt.Errorf("failed to parse root certificate")
+		}
+
+		options = append(options, actions.WithRootCAs(pool))
+	}
+
+	proxyFunc := httpproxy.FromEnvironment().ProxyFunc()
+	options = append(options, actions.WithProxy(func(req *http.Request) (*url.URL, error) {
+		return proxyFunc(req.URL)
+	}))
+
+	client, err := actions.NewClient(c.ConfigureUrl, &creds, options...)
+	if err != nil {
+		return nil, fmt.Errorf("failed to create actions client: %w", err)
+	}
+
+	client.SetUserAgent(actions.UserAgentInfo{
+		Version:    build.Version,
+		CommitSHA:  build.CommitSHA,
+		ScaleSetID: c.RunnerScaleSetId,
+		HasProxy:   hasProxy(),
+		Subsystem:  "ghalistener",
+	})
+
+	return client, nil
+}
+
+func hasProxy() bool {
+	proxyFunc := httpproxy.FromEnvironment().ProxyFunc()
+	return proxyFunc != nil
+}

cmd/ghalistener/config/config_client_test.go

@@ -0,0 +1,161 @@
+package config_test
+
+import (
+	"context"
+	"crypto/tls"
+	"net/http"
+	"net/http/httptest"
+	"os"
+	"path/filepath"
+	"testing"
+
+	"github.com/actions/actions-runner-controller/cmd/ghalistener/config"
+	"github.com/actions/actions-runner-controller/github/actions"
+	"github.com/actions/actions-runner-controller/github/actions/testserver"
+	"github.com/go-logr/logr"
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+)
+
+func TestCustomerServerRootCA(t *testing.T) {
+	ctx := context.Background()
+	certsFolder := filepath.Join(
+		"../../../",
+		"github",
+		"actions",
+		"testdata",
+	)
+	certPath := filepath.Join(certsFolder, "server.crt")
+	keyPath := filepath.Join(certsFolder, "server.key")
+
+	serverCalledSuccessfully := false
+
+	server := testserver.NewUnstarted(t, http.HandlerFunc(func(w http.ResponseWriter, _ *http.Request) {
+		serverCalledSuccessfully = true
+		w.WriteHeader(http.StatusOK)
+		w.Write([]byte(`{"count": 0}`))
+	}))
+	cert, err := tls.LoadX509KeyPair(certPath, keyPath)
+	require.NoError(t, err)
+
+	server.TLS = &tls.Config{Certificates: []tls.Certificate{cert}}
+	server.StartTLS()
+
+	var certsString string
+	rootCA, err := os.ReadFile(filepath.Join(certsFolder, "rootCA.crt"))
+	require.NoError(t, err)
+	certsString = string(rootCA)
+
+	intermediate, err := os.ReadFile(filepath.Join(certsFolder, "intermediate.pem"))
+	require.NoError(t, err)
+	certsString = certsString + string(intermediate)
+
+	config := config.Config{
+		ConfigureUrl: server.ConfigURLForOrg("myorg"),
+		ServerRootCA: certsString,
+		Token:        "token",
+	}
+
+	client, err := config.ActionsClient(logr.Discard())
+	require.NoError(t, err)
+	_, err = client.GetRunnerScaleSet(ctx, 1, "test")
+	require.NoError(t, err)
+	assert.True(t, serverCalledSuccessfully)
+}
+
+func TestProxySettings(t *testing.T) {
+	t.Run("http", func(t *testing.T) {
+		wentThroughProxy := false
+
+		proxy := httptest.NewServer(http.HandlerFunc(func(http.ResponseWriter, *http.Request) {
+			wentThroughProxy = true
+		}))
+		t.Cleanup(func() {
+			proxy.Close()
+		})
+
+		prevProxy := os.Getenv("http_proxy")
+		os.Setenv("http_proxy", proxy.URL)
+		defer os.Setenv("http_proxy", prevProxy)
+
+		config := config.Config{
+			ConfigureUrl: "https://github.com/org/repo",
+			Token:        "token",
+		}
+
+		client, err := config.ActionsClient(logr.Discard())
+		require.NoError(t, err)
+
+		req, err := http.NewRequest(http.MethodGet, "http://example.com", nil)
+		require.NoError(t, err)
+		_, err = client.Do(req)
+		require.NoError(t, err)
+
+		assert.True(t, wentThroughProxy)
+	})
+
+	t.Run("https", func(t *testing.T) {
+		wentThroughProxy := false
+
+		proxy := httptest.NewServer(http.HandlerFunc(func(http.ResponseWriter, *http.Request) {
+			wentThroughProxy = true
+		}))
+		t.Cleanup(func() {
+			proxy.Close()
+		})
+
+		prevProxy := os.Getenv("https_proxy")
+		os.Setenv("https_proxy", proxy.URL)
+		defer os.Setenv("https_proxy", prevProxy)
+
+		config := config.Config{
+			ConfigureUrl: "https://github.com/org/repo",
+			Token:        "token",
+		}
+
+		client, err := config.ActionsClient(logr.Discard(), actions.WithRetryMax(0))
+		require.NoError(t, err)
+
+		req, err := http.NewRequest(http.MethodGet, "https://example.com", nil)
+		require.NoError(t, err)
+
+		_, err = client.Do(req)
+		// proxy doesn't support https
+		assert.Error(t, err)
+		assert.True(t, wentThroughProxy)
+	})
+
+	t.Run("no_proxy", func(t *testing.T) {
+		wentThroughProxy := false
+
+		proxy := httptest.NewServer(http.HandlerFunc(func(http.ResponseWriter, *http.Request) {
+			wentThroughProxy = true
+		}))
+		t.Cleanup(func() {
+			proxy.Close()
+		})
+
+		prevProxy := os.Getenv("http_proxy")
+		os.Setenv("http_proxy", proxy.URL)
+		defer os.Setenv("http_proxy", prevProxy)
+
+		prevNoProxy := os.Getenv("no_proxy")
+		os.Setenv("no_proxy", "example.com")
+		defer os.Setenv("no_proxy", prevNoProxy)
+
+		config := config.Config{
+			ConfigureUrl: "https://github.com/org/repo",
+			Token:        "token",
+		}
+
+		client, err := config.ActionsClient(logr.Discard())
+		require.NoError(t, err)
+
+		req, err := http.NewRequest(http.MethodGet, "http://example.com", nil)
+		require.NoError(t, err)
+
+		_, err = client.Do(req)
+		require.NoError(t, err)
+		assert.False(t, wentThroughProxy)
+	})
+}

cmd/ghalistener/config/config_test.go

@@ -0,0 +1,92 @@
+package config
+
+import (
+	"fmt"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestConfigValidationMinMax(t *testing.T) {
+	config := &Config{
+		ConfigureUrl:                "github.com/some_org/some_repo",
+		EphemeralRunnerSetNamespace: "namespace",
+		EphemeralRunnerSetName:      "deployment",
+		RunnerScaleSetId:            1,
+		MinRunners:                  5,
+		MaxRunners:                  2,
+		Token:                       "token",
+	}
+	err := config.validate()
+	assert.ErrorContains(t, err, "MinRunners '5' cannot be greater than MaxRunners '2", "Expected error about MinRunners > MaxRunners")
+}
+
+func TestConfigValidationMissingToken(t *testing.T) {
+	config := &Config{
+		ConfigureUrl:                "github.com/some_org/some_repo",
+		EphemeralRunnerSetNamespace: "namespace",
+		EphemeralRunnerSetName:      "deployment",
+		RunnerScaleSetId:            1,
+	}
+	err := config.validate()
+	expectedError := fmt.Sprintf("GitHub auth credential is missing, token length: '%d', appId: '%d', installationId: '%d', private key length: '%d", len(config.Token), config.AppID, config.AppInstallationID, len(config.AppPrivateKey))
+	assert.ErrorContains(t, err, expectedError, "Expected error about missing auth")
+}
+
+func TestConfigValidationAppKey(t *testing.T) {
+	config := &Config{
+		AppID:                       1,
+		AppInstallationID:           10,
+		ConfigureUrl:                "github.com/some_org/some_repo",
+		EphemeralRunnerSetNamespace: "namespace",
+		EphemeralRunnerSetName:      "deployment",
+		RunnerScaleSetId:            1,
+	}
+	err := config.validate()
+	expectedError := fmt.Sprintf("GitHub auth credential is missing, token length: '%d', appId: '%d', installationId: '%d', private key length: '%d", len(config.Token), config.AppID, config.AppInstallationID, len(config.AppPrivateKey))
+	assert.ErrorContains(t, err, expectedError, "Expected error about missing auth")
+}
+
+func TestConfigValidationOnlyOneTypeOfCredentials(t *testing.T) {
+	config := &Config{
+		AppID:                       1,
+		AppInstallationID:           10,
+		AppPrivateKey:               "asdf",
+		Token:                       "asdf",
+		ConfigureUrl:                "github.com/some_org/some_repo",
+		EphemeralRunnerSetNamespace: "namespace",
+		EphemeralRunnerSetName:      "deployment",
+		RunnerScaleSetId:            1,
+	}
+	err := config.validate()
+	expectedError := fmt.Sprintf("only one GitHub auth method supported at a time. Have both PAT and App auth: token length: '%d', appId: '%d', installationId: '%d', private key length: '%d", len(config.Token), config.AppID, config.AppInstallationID, len(config.AppPrivateKey))
+	assert.ErrorContains(t, err, expectedError, "Expected error about missing auth")
+}
+
+func TestConfigValidation(t *testing.T) {
+	config := &Config{
+		ConfigureUrl:                "https://github.com/actions",
+		EphemeralRunnerSetNamespace: "namespace",
+		EphemeralRunnerSetName:      "deployment",
+		RunnerScaleSetId:            1,
+		MinRunners:                  1,
+		MaxRunners:                  5,
+		Token:                       "asdf",
+	}
+
+	err := config.validate()
+
+	assert.NoError(t, err, "Expected no error")
+}
+
+func TestConfigValidationConfigUrl(t *testing.T) {
+	config := &Config{
+		EphemeralRunnerSetNamespace: "namespace",
+		EphemeralRunnerSetName:      "deployment",
+		RunnerScaleSetId:            1,
+	}
+
+	err := config.validate()
+
+	assert.ErrorContains(t, err, "GitHubConfigUrl is not provided", "Expected error about missing ConfigureUrl")
+}

cmd/ghalistener/listener/listener.go

@@ -0,0 +1,452 @@
+package listener
+
+import (
+	"context"
+	"encoding/json"
+	"errors"
+	"fmt"
+	"net/http"
+	"os"
+	"time"
+
+	"github.com/actions/actions-runner-controller/cmd/ghalistener/metrics"
+	"github.com/actions/actions-runner-controller/github/actions"
+	"github.com/go-logr/logr"
+	"github.com/google/uuid"
+)
+
+const (
+	sessionCreationMaxRetries = 10
+)
+
+// message types
+const (
+	messageTypeJobAvailable = "JobAvailable"
+	messageTypeJobAssigned  = "JobAssigned"
+	messageTypeJobStarted   = "JobStarted"
+	messageTypeJobCompleted = "JobCompleted"
+)
+
+//go:generate mockery --name Client --output ./mocks --outpkg mocks --case underscore
+type Client interface {
+	GetAcquirableJobs(ctx context.Context, runnerScaleSetId int) (*actions.AcquirableJobList, error)
+	CreateMessageSession(ctx context.Context, runnerScaleSetId int, owner string) (*actions.RunnerScaleSetSession, error)
+	GetMessage(ctx context.Context, messageQueueUrl, messageQueueAccessToken string, lastMessageId int64, maxCapacity int) (*actions.RunnerScaleSetMessage, error)
+	DeleteMessage(ctx context.Context, messageQueueUrl, messageQueueAccessToken string, messageId int64) error
+	AcquireJobs(ctx context.Context, runnerScaleSetId int, messageQueueAccessToken string, requestIds []int64) ([]int64, error)
+	RefreshMessageSession(ctx context.Context, runnerScaleSetId int, sessionId *uuid.UUID) (*actions.RunnerScaleSetSession, error)
+	DeleteMessageSession(ctx context.Context, runnerScaleSetId int, sessionId *uuid.UUID) error
+}
+
+type Config struct {
+	Client     Client
+	ScaleSetID int
+	MinRunners int
+	MaxRunners int
+	Logger     logr.Logger
+	Metrics    metrics.Publisher
+}
+
+func (c *Config) Validate() error {
+	if c.Client == nil {
+		return errors.New("client is required")
+	}
+	if c.ScaleSetID == 0 {
+		return errors.New("scaleSetID is required")
+	}
+	if c.MinRunners < 0 {
+		return errors.New("minRunners must be greater than or equal to 0")
+	}
+	if c.MaxRunners < 0 {
+		return errors.New("maxRunners must be greater than or equal to 0")
+	}
+	if c.MaxRunners > 0 && c.MinRunners > c.MaxRunners {
+		return errors.New("minRunners must be less than or equal to maxRunners")
+	}
+	return nil
+}
+
+// The Listener's role is to manage all interactions with the actions service.
+// It receives messages and processes them using the given handler.
+type Listener struct {
+	// configured fields
+	scaleSetID int               // The ID of the scale set associated with the listener.
+	client     Client            // The client used to interact with the scale set.
+	metrics    metrics.Publisher // The publisher used to publish metrics.
+
+	// internal fields
+	logger   logr.Logger // The logger used for logging.
+	hostname string      // The hostname of the listener.
+
+	// updated fields
+	lastMessageID int64                          // The ID of the last processed message.
+	maxCapacity   int                            // The maximum number of runners that can be created.
+	session       *actions.RunnerScaleSetSession // The session for managing the runner scale set.
+}
+
+func New(config Config) (*Listener, error) {
+	if err := config.Validate(); err != nil {
+		return nil, fmt.Errorf("invalid config: %w", err)
+	}
+
+	listener := &Listener{
+		scaleSetID:  config.ScaleSetID,
+		client:      config.Client,
+		logger:      config.Logger,
+		metrics:     metrics.Discard,
+		maxCapacity: config.MaxRunners,
+	}
+
+	if config.Metrics != nil {
+		listener.metrics = config.Metrics
+	}
+
+	listener.metrics.PublishStatic(config.MinRunners, config.MaxRunners)
+
+	hostname, err := os.Hostname()
+	if err != nil {
+		hostname = uuid.NewString()
+		listener.logger.Info("Failed to get hostname, fallback to uuid", "uuid", hostname, "error", err)
+	}
+	listener.hostname = hostname
+
+	return listener, nil
+}
+
+//go:generate mockery --name Handler --output ./mocks --outpkg mocks --case underscore
+type Handler interface {
+	HandleJobStarted(ctx context.Context, jobInfo *actions.JobStarted) error
+	HandleDesiredRunnerCount(ctx context.Context, count, jobsCompleted int) (int, error)
+}
+
+// Listen listens for incoming messages and handles them using the provided handler.
+// It continuously listens for messages until the context is cancelled.
+// The initial message contains the current statistics and acquirable jobs, if any.
+// The handler is responsible for handling the initial message and subsequent messages.
+// If an error occurs during any step, Listen returns an error.
+func (l *Listener) Listen(ctx context.Context, handler Handler) error {
+	if err := l.createSession(ctx); err != nil {
+		return fmt.Errorf("createSession failed: %w", err)
+	}
+
+	defer func() {
+		if err := l.deleteMessageSession(); err != nil {
+			l.logger.Error(err, "failed to delete message session")
+		}
+	}()
+
+	initialMessage := &actions.RunnerScaleSetMessage{
+		MessageId:   0,
+		MessageType: "RunnerScaleSetJobMessages",
+		Statistics:  l.session.Statistics,
+		Body:        "",
+	}
+
+	if l.session.Statistics == nil {
+		return fmt.Errorf("session statistics is nil")
+	}
+	l.metrics.PublishStatistics(initialMessage.Statistics)
+
+	desiredRunners, err := handler.HandleDesiredRunnerCount(ctx, initialMessage.Statistics.TotalAssignedJobs, 0)
+	if err != nil {
+		return fmt.Errorf("handling initial message failed: %w", err)
+	}
+	l.metrics.PublishDesiredRunners(desiredRunners)
+
+	for {
+		select {
+		case <-ctx.Done():
+			return ctx.Err()
+		default:
+		}
+
+		msg, err := l.getMessage(ctx)
+		if err != nil {
+			return fmt.Errorf("failed to get message: %w", err)
+		}
+
+		if msg == nil {
+			_, err := handler.HandleDesiredRunnerCount(ctx, 0, 0)
+			if err != nil {
+				return fmt.Errorf("handling nil message failed: %w", err)
+			}
+
+			continue
+		}
+
+		// Remove cancellation from the context to avoid cancelling the message handling.
+		if err := l.handleMessage(context.WithoutCancel(ctx), handler, msg); err != nil {
+			return fmt.Errorf("failed to handle message: %w", err)
+		}
+	}
+}
+
+func (l *Listener) handleMessage(ctx context.Context, handler Handler, msg *actions.RunnerScaleSetMessage) error {
+	parsedMsg, err := l.parseMessage(ctx, msg)
+	if err != nil {
+		return fmt.Errorf("failed to parse message: %w", err)
+	}
+	l.metrics.PublishStatistics(parsedMsg.statistics)
+
+	if len(parsedMsg.jobsAvailable) > 0 {
+		acquiredJobIDs, err := l.acquireAvailableJobs(ctx, parsedMsg.jobsAvailable)
+		if err != nil {
+			return fmt.Errorf("failed to acquire jobs: %w", err)
+		}
+
+		l.logger.Info("Jobs are acquired", "count", len(acquiredJobIDs), "requestIds", fmt.Sprint(acquiredJobIDs))
+	}
+
+	for _, jobCompleted := range parsedMsg.jobsCompleted {
+		l.metrics.PublishJobCompleted(jobCompleted)
+	}
+
+	l.lastMessageID = msg.MessageId
+
+	if err := l.deleteLastMessage(ctx); err != nil {
+		return fmt.Errorf("failed to delete message: %w", err)
+	}
+
+	for _, jobStarted := range parsedMsg.jobsStarted {
+		if err := handler.HandleJobStarted(ctx, jobStarted); err != nil {
+			return fmt.Errorf("failed to handle job started: %w", err)
+		}
+		l.metrics.PublishJobStarted(jobStarted)
+	}
+
+	desiredRunners, err := handler.HandleDesiredRunnerCount(ctx, parsedMsg.statistics.TotalAssignedJobs, len(parsedMsg.jobsCompleted))
+	if err != nil {
+		return fmt.Errorf("failed to handle desired runner count: %w", err)
+	}
+	l.metrics.PublishDesiredRunners(desiredRunners)
+	return nil
+}
+
+func (l *Listener) createSession(ctx context.Context) error {
+	var session *actions.RunnerScaleSetSession
+	var retries int
+
+	for {
+		var err error
+		session, err = l.client.CreateMessageSession(ctx, l.scaleSetID, l.hostname)
+		if err == nil {
+			break
+		}
+
+		clientErr := &actions.HttpClientSideError{}
+		if !errors.As(err, &clientErr) {
+			return fmt.Errorf("failed to create session: %w", err)
+		}
+
+		if clientErr.Code != http.StatusConflict {
+			return fmt.Errorf("failed to create session: %w", err)
+		}
+
+		retries++
+		if retries >= sessionCreationMaxRetries {
+			return fmt.Errorf("failed to create session after %d retries: %w", retries, err)
+		}
+
+		l.logger.Info("Unable to create message session. Will try again in 30 seconds", "error", err.Error())
+
+		select {
+		case <-ctx.Done():
+			return fmt.Errorf("context cancelled: %w", ctx.Err())
+		case <-time.After(30 * time.Second):
+		}
+	}
+
+	statistics, err := json.Marshal(session.Statistics)
+	if err != nil {
+		return fmt.Errorf("failed to marshal statistics: %w", err)
+	}
+	l.logger.Info("Current runner scale set statistics.", "statistics", string(statistics))
+
+	l.session = session
+
+	return nil
+}
+
+func (l *Listener) getMessage(ctx context.Context) (*actions.RunnerScaleSetMessage, error) {
+	l.logger.Info("Getting next message", "lastMessageID", l.lastMessageID)
+	msg, err := l.client.GetMessage(ctx, l.session.MessageQueueUrl, l.session.MessageQueueAccessToken, l.lastMessageID, l.maxCapacity)
+	if err == nil { // if NO error
+		return msg, nil
+	}
+
+	expiredError := &actions.MessageQueueTokenExpiredError{}
+	if !errors.As(err, &expiredError) {
+		return nil, fmt.Errorf("failed to get next message: %w", err)
+	}
+
+	if err := l.refreshSession(ctx); err != nil {
+		return nil, err
+	}
+
+	l.logger.Info("Getting next message", "lastMessageID", l.lastMessageID)
+
+	msg, err = l.client.GetMessage(ctx, l.session.MessageQueueUrl, l.session.MessageQueueAccessToken, l.lastMessageID, l.maxCapacity)
+	if err != nil { // if NO error
+		return nil, fmt.Errorf("failed to get next message after message session refresh: %w", err)
+	}
+
+	return msg, nil
+}
+
+func (l *Listener) deleteLastMessage(ctx context.Context) error {
+	l.logger.Info("Deleting last message", "lastMessageID", l.lastMessageID)
+	err := l.client.DeleteMessage(ctx, l.session.MessageQueueUrl, l.session.MessageQueueAccessToken, l.lastMessageID)
+	if err == nil { // if NO error
+		return nil
+	}
+
+	expiredError := &actions.MessageQueueTokenExpiredError{}
+	if !errors.As(err, &expiredError) {
+		return fmt.Errorf("failed to delete last message: %w", err)
+	}
+
+	if err := l.refreshSession(ctx); err != nil {
+		return err
+	}
+
+	err = l.client.DeleteMessage(ctx, l.session.MessageQueueUrl, l.session.MessageQueueAccessToken, l.lastMessageID)
+	if err != nil {
+		return fmt.Errorf("failed to delete last message after message session refresh: %w", err)
+	}
+
+	return nil
+}
+
+type parsedMessage struct {
+	statistics    *actions.RunnerScaleSetStatistic
+	jobsStarted   []*actions.JobStarted
+	jobsAvailable []*actions.JobAvailable
+	jobsCompleted []*actions.JobCompleted
+}
+
+func (l *Listener) parseMessage(ctx context.Context, msg *actions.RunnerScaleSetMessage) (*parsedMessage, error) {
+	if msg.MessageType != "RunnerScaleSetJobMessages" {
+		l.logger.Info("Skipping message", "messageType", msg.MessageType)
+		return nil, fmt.Errorf("invalid message type: %s", msg.MessageType)
+	}
+
+	l.logger.Info("Processing message", "messageId", msg.MessageId, "messageType", msg.MessageType)
+	if msg.Statistics == nil {
+		return nil, fmt.Errorf("invalid message: statistics is nil")
+	}
+
+	l.logger.Info("New runner scale set statistics.", "statistics", msg.Statistics)
+
+	var batchedMessages []json.RawMessage
+	if len(msg.Body) > 0 {
+		if err := json.Unmarshal([]byte(msg.Body), &batchedMessages); err != nil {
+			return nil, fmt.Errorf("failed to unmarshal batched messages: %w", err)
+		}
+	}
+
+	parsedMsg := &parsedMessage{
+		statistics: msg.Statistics,
+	}
+
+	for _, msg := range batchedMessages {
+		var messageType actions.JobMessageType
+		if err := json.Unmarshal(msg, &messageType); err != nil {
+			return nil, fmt.Errorf("failed to decode job message type: %w", err)
+		}
+
+		switch messageType.MessageType {
+		case messageTypeJobAvailable:
+			var jobAvailable actions.JobAvailable
+			if err := json.Unmarshal(msg, &jobAvailable); err != nil {
+				return nil, fmt.Errorf("failed to decode job available: %w", err)
+			}
+
+			l.logger.Info("Job available message received", "jobId", jobAvailable.RunnerRequestId)
+			parsedMsg.jobsAvailable = append(parsedMsg.jobsAvailable, &jobAvailable)
+
+		case messageTypeJobAssigned:
+			var jobAssigned actions.JobAssigned
+			if err := json.Unmarshal(msg, &jobAssigned); err != nil {
+				return nil, fmt.Errorf("failed to decode job assigned: %w", err)
+			}
+
+			l.logger.Info("Job assigned message received", "jobId", jobAssigned.RunnerRequestId)
+
+		case messageTypeJobStarted:
+			var jobStarted actions.JobStarted
+			if err := json.Unmarshal(msg, &jobStarted); err != nil {
+				return nil, fmt.Errorf("could not decode job started message. %w", err)
+			}
+			l.logger.Info("Job started message received.", "RequestId", jobStarted.RunnerRequestId, "RunnerId", jobStarted.RunnerId)
+			parsedMsg.jobsStarted = append(parsedMsg.jobsStarted, &jobStarted)
+
+		case messageTypeJobCompleted:
+			var jobCompleted actions.JobCompleted
+			if err := json.Unmarshal(msg, &jobCompleted); err != nil {
+				return nil, fmt.Errorf("failed to decode job completed: %w", err)
+			}
+
+			l.logger.Info("Job completed message received.", "RequestId", jobCompleted.RunnerRequestId, "Result", jobCompleted.Result, "RunnerId", jobCompleted.RunnerId, "RunnerName", jobCompleted.RunnerName)
+			parsedMsg.jobsCompleted = append(parsedMsg.jobsCompleted, &jobCompleted)
+
+		default:
+			l.logger.Info("unknown job message type.", "messageType", messageType.MessageType)
+		}
+	}
+
+	return parsedMsg, nil
+}
+
+func (l *Listener) acquireAvailableJobs(ctx context.Context, jobsAvailable []*actions.JobAvailable) ([]int64, error) {
+	ids := make([]int64, 0, len(jobsAvailable))
+	for _, job := range jobsAvailable {
+		ids = append(ids, job.RunnerRequestId)
+	}
+
+	l.logger.Info("Acquiring jobs", "count", len(ids), "requestIds", fmt.Sprint(ids))
+
+	idsAcquired, err := l.client.AcquireJobs(ctx, l.scaleSetID, l.session.MessageQueueAccessToken, ids)
+	if err == nil { // if NO errors
+		return idsAcquired, nil
+	}
+
+	expiredError := &actions.MessageQueueTokenExpiredError{}
+	if !errors.As(err, &expiredError) {
+		return nil, fmt.Errorf("failed to acquire jobs: %w", err)
+	}
+
+	if err := l.refreshSession(ctx); err != nil {
+		return nil, err
+	}
+
+	idsAcquired, err = l.client.AcquireJobs(ctx, l.scaleSetID, l.session.MessageQueueAccessToken, ids)
+	if err != nil {
+		return nil, fmt.Errorf("failed to acquire jobs after session refresh: %w", err)
+	}
+
+	return idsAcquired, nil
+}
+
+func (l *Listener) refreshSession(ctx context.Context) error {
+	l.logger.Info("Message queue token is expired during GetNextMessage, refreshing...")
+	session, err := l.client.RefreshMessageSession(ctx, l.session.RunnerScaleSet.Id, l.session.SessionId)
+	if err != nil {
+		return fmt.Errorf("refresh message session failed. %w", err)
+	}
+
+	l.session = session
+	return nil
+}
+
+func (l *Listener) deleteMessageSession() error {
+	ctx, cancel := context.WithTimeout(context.Background(), 30*time.Second)
+	defer cancel()
+
+	l.logger.Info("Deleting message session")
+
+	if err := l.client.DeleteMessageSession(ctx, l.session.RunnerScaleSet.Id, l.session.SessionId); err != nil {
+		return fmt.Errorf("failed to delete message session: %w", err)
+	}
+
+	return nil
+}

cmd/ghalistener/listener/listener_test.go

@@ -0,0 +1,970 @@
+package listener
+
+import (
+	"context"
+	"encoding/json"
+	"errors"
+	"net/http"
+	"testing"
+	"time"
+
+	listenermocks "github.com/actions/actions-runner-controller/cmd/ghalistener/listener/mocks"
+	"github.com/actions/actions-runner-controller/cmd/ghalistener/metrics"
+	"github.com/actions/actions-runner-controller/github/actions"
+	"github.com/google/uuid"
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/mock"
+	"github.com/stretchr/testify/require"
+)
+
+func TestNew(t *testing.T) {
+	t.Parallel()
+	t.Run("InvalidConfig", func(t *testing.T) {
+		t.Parallel()
+		var config Config
+		_, err := New(config)
+		assert.NotNil(t, err)
+	})
+
+	t.Run("ValidConfig", func(t *testing.T) {
+		t.Parallel()
+		config := Config{
+			Client:     listenermocks.NewClient(t),
+			ScaleSetID: 1,
+			Metrics:    metrics.Discard,
+		}
+		l, err := New(config)
+		assert.Nil(t, err)
+		assert.NotNil(t, l)
+	})
+}
+
+func TestListener_createSession(t *testing.T) {
+	t.Parallel()
+	t.Run("FailOnce", func(t *testing.T) {
+		t.Parallel()
+		ctx := context.Background()
+
+		config := Config{
+			ScaleSetID: 1,
+			Metrics:    metrics.Discard,
+		}
+
+		client := listenermocks.NewClient(t)
+		client.On("CreateMessageSession", ctx, mock.Anything, mock.Anything).Return(nil, assert.AnError).Once()
+		config.Client = client
+
+		l, err := New(config)
+		require.Nil(t, err)
+
+		err = l.createSession(ctx)
+		assert.NotNil(t, err)
+	})
+
+	t.Run("FailContext", func(t *testing.T) {
+		t.Parallel()
+		ctx, cancel := context.WithTimeout(context.Background(), 2*time.Second)
+		defer cancel()
+
+		config := Config{
+			ScaleSetID: 1,
+			Metrics:    metrics.Discard,
+		}
+
+		client := listenermocks.NewClient(t)
+		client.On("CreateMessageSession", ctx, mock.Anything, mock.Anything).Return(nil,
+			&actions.HttpClientSideError{Code: http.StatusConflict}).Once()
+		config.Client = client
+
+		l, err := New(config)
+		require.Nil(t, err)
+
+		err = l.createSession(ctx)
+		assert.True(t, errors.Is(err, context.DeadlineExceeded))
+	})
+
+	t.Run("SetsSession", func(t *testing.T) {
+		t.Parallel()
+		config := Config{
+			ScaleSetID: 1,
+			Metrics:    metrics.Discard,
+		}
+
+		client := listenermocks.NewClient(t)
+
+		uuid := uuid.New()
+		session := &actions.RunnerScaleSetSession{
+			SessionId:               &uuid,
+			OwnerName:               "example",
+			RunnerScaleSet:          &actions.RunnerScaleSet{},
+			MessageQueueUrl:         "https://example.com",
+			MessageQueueAccessToken: "1234567890",
+			Statistics:              nil,
+		}
+		client.On("CreateMessageSession", mock.Anything, mock.Anything, mock.Anything).Return(session, nil).Once()
+		config.Client = client
+
+		l, err := New(config)
+		require.Nil(t, err)
+
+		err = l.createSession(context.Background())
+		assert.Nil(t, err)
+		assert.Equal(t, session, l.session)
+	})
+}
+
+func TestListener_getMessage(t *testing.T) {
+	t.Parallel()
+
+	t.Run("ReceivesMessage", func(t *testing.T) {
+		t.Parallel()
+
+		ctx := context.Background()
+		config := Config{
+			ScaleSetID: 1,
+			Metrics:    metrics.Discard,
+			MaxRunners: 10,
+		}
+
+		client := listenermocks.NewClient(t)
+		want := &actions.RunnerScaleSetMessage{
+			MessageId: 1,
+		}
+		client.On("GetMessage", ctx, mock.Anything, mock.Anything, mock.Anything, 10).Return(want, nil).Once()
+		config.Client = client
+
+		l, err := New(config)
+		require.Nil(t, err)
+		l.session = &actions.RunnerScaleSetSession{}
+
+		got, err := l.getMessage(ctx)
+		assert.Nil(t, err)
+		assert.Equal(t, want, got)
+	})
+
+	t.Run("NotExpiredError", func(t *testing.T) {
+		t.Parallel()
+
+		ctx := context.Background()
+		config := Config{
+			ScaleSetID: 1,
+			Metrics:    metrics.Discard,
+			MaxRunners: 10,
+		}
+
+		client := listenermocks.NewClient(t)
+		client.On("GetMessage", ctx, mock.Anything, mock.Anything, mock.Anything, 10).Return(nil, &actions.HttpClientSideError{Code: http.StatusNotFound}).Once()
+		config.Client = client
+
+		l, err := New(config)
+		require.Nil(t, err)
+
+		l.session = &actions.RunnerScaleSetSession{}
+
+		_, err = l.getMessage(ctx)
+		assert.NotNil(t, err)
+	})
+
+	t.Run("RefreshAndSucceeds", func(t *testing.T) {
+		t.Parallel()
+
+		ctx := context.Background()
+		config := Config{
+			ScaleSetID: 1,
+			Metrics:    metrics.Discard,
+			MaxRunners: 10,
+		}
+
+		client := listenermocks.NewClient(t)
+
+		uuid := uuid.New()
+		session := &actions.RunnerScaleSetSession{
+			SessionId:               &uuid,
+			OwnerName:               "example",
+			RunnerScaleSet:          &actions.RunnerScaleSet{},
+			MessageQueueUrl:         "https://example.com",
+			MessageQueueAccessToken: "1234567890",
+			Statistics:              nil,
+		}
+		client.On("RefreshMessageSession", ctx, mock.Anything, mock.Anything).Return(session, nil).Once()
+
+		client.On("GetMessage", ctx, mock.Anything, mock.Anything, mock.Anything, 10).Return(nil, &actions.MessageQueueTokenExpiredError{}).Once()
+
+		want := &actions.RunnerScaleSetMessage{
+			MessageId: 1,
+		}
+		client.On("GetMessage", ctx, mock.Anything, mock.Anything, mock.Anything, 10).Return(want, nil).Once()
+
+		config.Client = client
+
+		l, err := New(config)
+		require.Nil(t, err)
+
+		l.session = &actions.RunnerScaleSetSession{
+			SessionId:      &uuid,
+			RunnerScaleSet: &actions.RunnerScaleSet{},
+		}
+
+		got, err := l.getMessage(ctx)
+		assert.Nil(t, err)
+		assert.Equal(t, want, got)
+	})
+
+	t.Run("RefreshAndFails", func(t *testing.T) {
+		t.Parallel()
+
+		ctx := context.Background()
+		config := Config{
+			ScaleSetID: 1,
+			Metrics:    metrics.Discard,
+			MaxRunners: 10,
+		}
+
+		client := listenermocks.NewClient(t)
+
+		uuid := uuid.New()
+		session := &actions.RunnerScaleSetSession{
+			SessionId:               &uuid,
+			OwnerName:               "example",
+			RunnerScaleSet:          &actions.RunnerScaleSet{},
+			MessageQueueUrl:         "https://example.com",
+			MessageQueueAccessToken: "1234567890",
+			Statistics:              nil,
+		}
+		client.On("RefreshMessageSession", ctx, mock.Anything, mock.Anything).Return(session, nil).Once()
+
+		client.On("GetMessage", ctx, mock.Anything, mock.Anything, mock.Anything, 10).Return(nil, &actions.MessageQueueTokenExpiredError{}).Twice()
+
+		config.Client = client
+
+		l, err := New(config)
+		require.Nil(t, err)
+
+		l.session = &actions.RunnerScaleSetSession{
+			SessionId:      &uuid,
+			RunnerScaleSet: &actions.RunnerScaleSet{},
+		}
+
+		got, err := l.getMessage(ctx)
+		assert.NotNil(t, err)
+		assert.Nil(t, got)
+	})
+}
+
+func TestListener_refreshSession(t *testing.T) {
+	t.Parallel()
+
+	t.Run("SuccessfullyRefreshes", func(t *testing.T) {
+		t.Parallel()
+
+		ctx := context.Background()
+		config := Config{
+			ScaleSetID: 1,
+			Metrics:    metrics.Discard,
+		}
+
+		client := listenermocks.NewClient(t)
+
+		newUUID := uuid.New()
+		session := &actions.RunnerScaleSetSession{
+			SessionId:               &newUUID,
+			OwnerName:               "example",
+			RunnerScaleSet:          &actions.RunnerScaleSet{},
+			MessageQueueUrl:         "https://example.com",
+			MessageQueueAccessToken: "1234567890",
+			Statistics:              nil,
+		}
+		client.On("RefreshMessageSession", ctx, mock.Anything, mock.Anything).Return(session, nil).Once()
+
+		config.Client = client
+
+		l, err := New(config)
+		require.Nil(t, err)
+
+		oldUUID := uuid.New()
+		l.session = &actions.RunnerScaleSetSession{
+			SessionId:      &oldUUID,
+			RunnerScaleSet: &actions.RunnerScaleSet{},
+		}
+
+		err = l.refreshSession(ctx)
+		assert.Nil(t, err)
+		assert.Equal(t, session, l.session)
+	})
+
+	t.Run("FailsToRefresh", func(t *testing.T) {
+		t.Parallel()
+
+		ctx := context.Background()
+		config := Config{
+			ScaleSetID: 1,
+			Metrics:    metrics.Discard,
+		}
+
+		client := listenermocks.NewClient(t)
+
+		client.On("RefreshMessageSession", ctx, mock.Anything, mock.Anything).Return(nil, errors.New("error")).Once()
+
+		config.Client = client
+
+		l, err := New(config)
+		require.Nil(t, err)
+
+		oldUUID := uuid.New()
+		oldSession := &actions.RunnerScaleSetSession{
+			SessionId:      &oldUUID,
+			RunnerScaleSet: &actions.RunnerScaleSet{},
+		}
+		l.session = oldSession
+
+		err = l.refreshSession(ctx)
+		assert.NotNil(t, err)
+		assert.Equal(t, oldSession, l.session)
+	})
+}
+
+func TestListener_deleteLastMessage(t *testing.T) {
+	t.Parallel()
+
+	t.Run("SuccessfullyDeletes", func(t *testing.T) {
+		t.Parallel()
+
+		ctx := context.Background()
+		config := Config{
+			ScaleSetID: 1,
+			Metrics:    metrics.Discard,
+		}
+
+		client := listenermocks.NewClient(t)
+
+		client.On("DeleteMessage", ctx, mock.Anything, mock.Anything, mock.MatchedBy(func(lastMessageID any) bool {
+			return lastMessageID.(int64) == int64(5)
+		})).Return(nil).Once()
+
+		config.Client = client
+
+		l, err := New(config)
+		require.Nil(t, err)
+
+		l.session = &actions.RunnerScaleSetSession{}
+		l.lastMessageID = 5
+
+		err = l.deleteLastMessage(ctx)
+		assert.Nil(t, err)
+	})
+
+	t.Run("FailsToDelete", func(t *testing.T) {
+		t.Parallel()
+
+		ctx := context.Background()
+		config := Config{
+			ScaleSetID: 1,
+			Metrics:    metrics.Discard,
+		}
+
+		client := listenermocks.NewClient(t)
+
+		client.On("DeleteMessage", ctx, mock.Anything, mock.Anything, mock.Anything).Return(errors.New("error")).Once()
+
+		config.Client = client
+
+		l, err := New(config)
+		require.Nil(t, err)
+
+		l.session = &actions.RunnerScaleSetSession{}
+		l.lastMessageID = 5
+
+		err = l.deleteLastMessage(ctx)
+		assert.NotNil(t, err)
+	})
+
+	t.Run("RefreshAndSucceeds", func(t *testing.T) {
+		t.Parallel()
+
+		ctx := context.Background()
+		config := Config{
+			ScaleSetID: 1,
+			Metrics:    metrics.Discard,
+		}
+
+		client := listenermocks.NewClient(t)
+
+		newUUID := uuid.New()
+		session := &actions.RunnerScaleSetSession{
+			SessionId:               &newUUID,
+			OwnerName:               "example",
+			RunnerScaleSet:          &actions.RunnerScaleSet{},
+			MessageQueueUrl:         "https://example.com",
+			MessageQueueAccessToken: "1234567890",
+			Statistics:              nil,
+		}
+		client.On("RefreshMessageSession", ctx, mock.Anything, mock.Anything).Return(session, nil).Once()
+
+		client.On("DeleteMessage", ctx, mock.Anything, mock.Anything, mock.Anything).Return(&actions.MessageQueueTokenExpiredError{}).Once()
+
+		client.On("DeleteMessage", ctx, mock.Anything, mock.Anything, mock.MatchedBy(func(lastMessageID any) bool {
+			return lastMessageID.(int64) == int64(5)
+		})).Return(nil).Once()
+		config.Client = client
+
+		l, err := New(config)
+		require.Nil(t, err)
+
+		oldUUID := uuid.New()
+		l.session = &actions.RunnerScaleSetSession{
+			SessionId:      &oldUUID,
+			RunnerScaleSet: &actions.RunnerScaleSet{},
+		}
+		l.lastMessageID = 5
+
+		config.Client = client
+
+		err = l.deleteLastMessage(ctx)
+		assert.NoError(t, err)
+	})
+
+	t.Run("RefreshAndFails", func(t *testing.T) {
+		t.Parallel()
+
+		ctx := context.Background()
+		config := Config{
+			ScaleSetID: 1,
+			Metrics:    metrics.Discard,
+		}
+
+		client := listenermocks.NewClient(t)
+
+		newUUID := uuid.New()
+		session := &actions.RunnerScaleSetSession{
+			SessionId:               &newUUID,
+			OwnerName:               "example",
+			RunnerScaleSet:          &actions.RunnerScaleSet{},
+			MessageQueueUrl:         "https://example.com",
+			MessageQueueAccessToken: "1234567890",
+			Statistics:              nil,
+		}
+		client.On("RefreshMessageSession", ctx, mock.Anything, mock.Anything).Return(session, nil).Once()
+
+		client.On("DeleteMessage", ctx, mock.Anything, mock.Anything, mock.Anything).Return(&actions.MessageQueueTokenExpiredError{}).Twice()
+
+		config.Client = client
+
+		l, err := New(config)
+		require.Nil(t, err)
+
+		oldUUID := uuid.New()
+		l.session = &actions.RunnerScaleSetSession{
+			SessionId:      &oldUUID,
+			RunnerScaleSet: &actions.RunnerScaleSet{},
+		}
+		l.lastMessageID = 5
+
+		config.Client = client
+
+		err = l.deleteLastMessage(ctx)
+		assert.Error(t, err)
+	})
+}
+
+func TestListener_Listen(t *testing.T) {
+	t.Parallel()
+
+	t.Run("CreateSessionFails", func(t *testing.T) {
+		t.Parallel()
+		ctx := context.Background()
+		config := Config{
+			ScaleSetID: 1,
+			Metrics:    metrics.Discard,
+		}
+
+		client := listenermocks.NewClient(t)
+		client.On("CreateMessageSession", ctx, mock.Anything, mock.Anything).Return(nil, assert.AnError).Once()
+		config.Client = client
+
+		l, err := New(config)
+		require.Nil(t, err)
+
+		err = l.Listen(ctx, nil)
+		assert.NotNil(t, err)
+	})
+
+	t.Run("CallHandleRegardlessOfInitialMessage", func(t *testing.T) {
+		t.Parallel()
+		ctx, cancel := context.WithCancel(context.Background())
+
+		config := Config{
+			ScaleSetID: 1,
+			Metrics:    metrics.Discard,
+		}
+
+		client := listenermocks.NewClient(t)
+
+		uuid := uuid.New()
+		session := &actions.RunnerScaleSetSession{
+			SessionId:               &uuid,
+			OwnerName:               "example",
+			RunnerScaleSet:          &actions.RunnerScaleSet{},
+			MessageQueueUrl:         "https://example.com",
+			MessageQueueAccessToken: "1234567890",
+			Statistics:              &actions.RunnerScaleSetStatistic{},
+		}
+		client.On("CreateMessageSession", ctx, mock.Anything, mock.Anything).Return(session, nil).Once()
+		client.On("DeleteMessageSession", mock.Anything, session.RunnerScaleSet.Id, session.SessionId).Return(nil).Once()
+
+		config.Client = client
+
+		l, err := New(config)
+		require.Nil(t, err)
+
+		var called bool
+		handler := listenermocks.NewHandler(t)
+		handler.On("HandleDesiredRunnerCount", mock.Anything, mock.Anything, 0).
+			Return(0, nil).
+			Run(
+				func(mock.Arguments) {
+					called = true
+					cancel()
+				},
+			).
+			Once()
+
+		err = l.Listen(ctx, handler)
+		assert.True(t, errors.Is(err, context.Canceled))
+		assert.True(t, called)
+	})
+
+	t.Run("CancelContextAfterGetMessage", func(t *testing.T) {
+		t.Parallel()
+
+		ctx, cancel := context.WithCancel(context.Background())
+
+		config := Config{
+			ScaleSetID: 1,
+			Metrics:    metrics.Discard,
+			MaxRunners: 10,
+		}
+
+		client := listenermocks.NewClient(t)
+		uuid := uuid.New()
+		session := &actions.RunnerScaleSetSession{
+			SessionId:               &uuid,
+			OwnerName:               "example",
+			RunnerScaleSet:          &actions.RunnerScaleSet{},
+			MessageQueueUrl:         "https://example.com",
+			MessageQueueAccessToken: "1234567890",
+			Statistics:              &actions.RunnerScaleSetStatistic{},
+		}
+		client.On("CreateMessageSession", ctx, mock.Anything, mock.Anything).Return(session, nil).Once()
+		client.On("DeleteMessageSession", mock.Anything, session.RunnerScaleSet.Id, session.SessionId).Return(nil).Once()
+
+		msg := &actions.RunnerScaleSetMessage{
+			MessageId:   1,
+			MessageType: "RunnerScaleSetJobMessages",
+			Statistics:  &actions.RunnerScaleSetStatistic{},
+		}
+		client.On("GetMessage", ctx, mock.Anything, mock.Anything, mock.Anything, 10).
+			Return(msg, nil).
+			Run(
+				func(mock.Arguments) {
+					cancel()
+				},
+			).
+			Once()
+
+		// Ensure delete message is called without cancel
+		client.On("DeleteMessage", context.WithoutCancel(ctx), mock.Anything, mock.Anything, mock.Anything).Return(nil).Once()
+
+		config.Client = client
+
+		handler := listenermocks.NewHandler(t)
+		handler.On("HandleDesiredRunnerCount", mock.Anything, mock.Anything, 0).
+			Return(0, nil).
+			Once()
+
+		handler.On("HandleDesiredRunnerCount", mock.Anything, mock.Anything, 0).
+			Return(0, nil).
+			Once()
+
+		l, err := New(config)
+		require.Nil(t, err)
+
+		err = l.Listen(ctx, handler)
+		assert.ErrorIs(t, context.Canceled, err)
+	})
+}
+
+func TestListener_acquireAvailableJobs(t *testing.T) {
+	t.Parallel()
+
+	t.Run("FailingToAcquireJobs", func(t *testing.T) {
+		t.Parallel()
+
+		ctx := context.Background()
+		config := Config{
+			ScaleSetID: 1,
+			Metrics:    metrics.Discard,
+		}
+
+		client := listenermocks.NewClient(t)
+
+		client.On("AcquireJobs", ctx, mock.Anything, mock.Anything, mock.Anything).Return(nil, assert.AnError).Once()
+
+		config.Client = client
+
+		l, err := New(config)
+		require.Nil(t, err)
+
+		uuid := uuid.New()
+		l.session = &actions.RunnerScaleSetSession{
+			SessionId:               &uuid,
+			OwnerName:               "example",
+			RunnerScaleSet:          &actions.RunnerScaleSet{},
+			MessageQueueUrl:         "https://example.com",
+			MessageQueueAccessToken: "1234567890",
+			Statistics:              &actions.RunnerScaleSetStatistic{},
+		}
+
+		availableJobs := []*actions.JobAvailable{
+			{
+				JobMessageBase: actions.JobMessageBase{
+					RunnerRequestId: 1,
+				},
+			},
+			{
+				JobMessageBase: actions.JobMessageBase{
+					RunnerRequestId: 2,
+				},
+			},
+			{
+				JobMessageBase: actions.JobMessageBase{
+					RunnerRequestId: 3,
+				},
+			},
+		}
+		_, err = l.acquireAvailableJobs(ctx, availableJobs)
+		assert.Error(t, err)
+	})
+
+	t.Run("SuccessfullyAcquiresJobsOnFirstRun", func(t *testing.T) {
+		t.Parallel()
+
+		ctx := context.Background()
+		config := Config{
+			ScaleSetID: 1,
+			Metrics:    metrics.Discard,
+		}
+
+		client := listenermocks.NewClient(t)
+
+		jobIDs := []int64{1, 2, 3}
+
+		client.On("AcquireJobs", ctx, mock.Anything, mock.Anything, mock.Anything).Return(jobIDs, nil).Once()
+
+		config.Client = client
+
+		l, err := New(config)
+		require.Nil(t, err)
+
+		uuid := uuid.New()
+		l.session = &actions.RunnerScaleSetSession{
+			SessionId:               &uuid,
+			OwnerName:               "example",
+			RunnerScaleSet:          &actions.RunnerScaleSet{},
+			MessageQueueUrl:         "https://example.com",
+			MessageQueueAccessToken: "1234567890",
+			Statistics:              &actions.RunnerScaleSetStatistic{},
+		}
+
+		availableJobs := []*actions.JobAvailable{
+			{
+				JobMessageBase: actions.JobMessageBase{
+					RunnerRequestId: 1,
+				},
+			},
+			{
+				JobMessageBase: actions.JobMessageBase{
+					RunnerRequestId: 2,
+				},
+			},
+			{
+				JobMessageBase: actions.JobMessageBase{
+					RunnerRequestId: 3,
+				},
+			},
+		}
+		acquiredJobIDs, err := l.acquireAvailableJobs(ctx, availableJobs)
+		assert.NoError(t, err)
+		assert.Equal(t, []int64{1, 2, 3}, acquiredJobIDs)
+	})
+
+	t.Run("RefreshAndSucceeds", func(t *testing.T) {
+		t.Parallel()
+
+		ctx := context.Background()
+		config := Config{
+			ScaleSetID: 1,
+			Metrics:    metrics.Discard,
+		}
+
+		client := listenermocks.NewClient(t)
+
+		uuid := uuid.New()
+		session := &actions.RunnerScaleSetSession{
+			SessionId:               &uuid,
+			OwnerName:               "example",
+			RunnerScaleSet:          &actions.RunnerScaleSet{},
+			MessageQueueUrl:         "https://example.com",
+			MessageQueueAccessToken: "1234567890",
+			Statistics:              nil,
+		}
+		client.On("RefreshMessageSession", ctx, mock.Anything, mock.Anything).Return(session, nil).Once()
+
+		// Second call to AcquireJobs will succeed
+		want := []int64{1, 2, 3}
+		availableJobs := []*actions.JobAvailable{
+			{
+				JobMessageBase: actions.JobMessageBase{
+					RunnerRequestId: 1,
+				},
+			},
+			{
+				JobMessageBase: actions.JobMessageBase{
+					RunnerRequestId: 2,
+				},
+			},
+			{
+				JobMessageBase: actions.JobMessageBase{
+					RunnerRequestId: 3,
+				},
+			},
+		}
+
+		// First call to AcquireJobs will fail with a token expired error
+		client.On("AcquireJobs", ctx, mock.Anything, mock.Anything, mock.Anything).
+			Run(func(args mock.Arguments) {
+				ids := args.Get(3).([]int64)
+				assert.Equal(t, want, ids)
+			}).
+			Return(nil, &actions.MessageQueueTokenExpiredError{}).
+			Once()
+
+		// Second call should succeed
+		client.On("AcquireJobs", ctx, mock.Anything, mock.Anything, mock.Anything).
+			Run(func(args mock.Arguments) {
+				ids := args.Get(3).([]int64)
+				assert.Equal(t, want, ids)
+			}).
+			Return(want, nil).
+			Once()
+
+		config.Client = client
+
+		l, err := New(config)
+		require.Nil(t, err)
+
+		l.session = &actions.RunnerScaleSetSession{
+			SessionId:      &uuid,
+			RunnerScaleSet: &actions.RunnerScaleSet{},
+		}
+
+		got, err := l.acquireAvailableJobs(ctx, availableJobs)
+		assert.Nil(t, err)
+		assert.Equal(t, want, got)
+	})
+
+	t.Run("RefreshAndFails", func(t *testing.T) {
+		t.Parallel()
+
+		ctx := context.Background()
+		config := Config{
+			ScaleSetID: 1,
+			Metrics:    metrics.Discard,
+		}
+
+		client := listenermocks.NewClient(t)
+
+		uuid := uuid.New()
+		session := &actions.RunnerScaleSetSession{
+			SessionId:               &uuid,
+			OwnerName:               "example",
+			RunnerScaleSet:          &actions.RunnerScaleSet{},
+			MessageQueueUrl:         "https://example.com",
+			MessageQueueAccessToken: "1234567890",
+			Statistics:              nil,
+		}
+		client.On("RefreshMessageSession", ctx, mock.Anything, mock.Anything).Return(session, nil).Once()
+
+		client.On("AcquireJobs", ctx, mock.Anything, mock.Anything, mock.Anything).Return(nil, &actions.MessageQueueTokenExpiredError{}).Twice()
+
+		config.Client = client
+
+		l, err := New(config)
+		require.Nil(t, err)
+
+		l.session = &actions.RunnerScaleSetSession{
+			SessionId:      &uuid,
+			RunnerScaleSet: &actions.RunnerScaleSet{},
+		}
+
+		availableJobs := []*actions.JobAvailable{
+			{
+				JobMessageBase: actions.JobMessageBase{
+					RunnerRequestId: 1,
+				},
+			},
+			{
+				JobMessageBase: actions.JobMessageBase{
+					RunnerRequestId: 2,
+				},
+			},
+			{
+				JobMessageBase: actions.JobMessageBase{
+					RunnerRequestId: 3,
+				},
+			},
+		}
+
+		got, err := l.acquireAvailableJobs(ctx, availableJobs)
+		assert.NotNil(t, err)
+		assert.Nil(t, got)
+	})
+}
+
+func TestListener_parseMessage(t *testing.T) {
+	t.Run("FailOnEmptyStatistics", func(t *testing.T) {
+		msg := &actions.RunnerScaleSetMessage{
+			MessageId:   1,
+			MessageType: "RunnerScaleSetJobMessages",
+			Statistics:  nil,
+		}
+
+		l := &Listener{}
+		parsedMsg, err := l.parseMessage(context.Background(), msg)
+		assert.Error(t, err)
+		assert.Nil(t, parsedMsg)
+	})
+
+	t.Run("FailOnIncorrectMessageType", func(t *testing.T) {
+		msg := &actions.RunnerScaleSetMessage{
+			MessageId:   1,
+			MessageType: "RunnerMessages", // arbitrary message type
+			Statistics:  &actions.RunnerScaleSetStatistic{},
+		}
+
+		l := &Listener{}
+		parsedMsg, err := l.parseMessage(context.Background(), msg)
+		assert.Error(t, err)
+		assert.Nil(t, parsedMsg)
+	})
+
+	t.Run("ParseAll", func(t *testing.T) {
+		msg := &actions.RunnerScaleSetMessage{
+			MessageId:   1,
+			MessageType: "RunnerScaleSetJobMessages",
+			Body:        "",
+			Statistics: &actions.RunnerScaleSetStatistic{
+				TotalAvailableJobs:     1,
+				TotalAcquiredJobs:      2,
+				TotalAssignedJobs:      3,
+				TotalRunningJobs:       4,
+				TotalRegisteredRunners: 5,
+				TotalBusyRunners:       6,
+				TotalIdleRunners:       7,
+			},
+		}
+
+		var batchedMessages []any
+		jobsAvailable := []*actions.JobAvailable{
+			{
+				AcquireJobUrl: "https://github.com/example",
+				JobMessageBase: actions.JobMessageBase{
+					JobMessageType: actions.JobMessageType{
+						MessageType: messageTypeJobAvailable,
+					},
+					RunnerRequestId: 1,
+				},
+			},
+			{
+				AcquireJobUrl: "https://github.com/example",
+				JobMessageBase: actions.JobMessageBase{
+					JobMessageType: actions.JobMessageType{
+						MessageType: messageTypeJobAvailable,
+					},
+					RunnerRequestId: 2,
+				},
+			},
+		}
+		for _, msg := range jobsAvailable {
+			batchedMessages = append(batchedMessages, msg)
+		}
+
+		jobsAssigned := []*actions.JobAssigned{
+			{
+				JobMessageBase: actions.JobMessageBase{
+					JobMessageType: actions.JobMessageType{
+						MessageType: messageTypeJobAssigned,
+					},
+					RunnerRequestId: 3,
+				},
+			},
+			{
+				JobMessageBase: actions.JobMessageBase{
+					JobMessageType: actions.JobMessageType{
+						MessageType: messageTypeJobAssigned,
+					},
+					RunnerRequestId: 4,
+				},
+			},
+		}
+		for _, msg := range jobsAssigned {
+			batchedMessages = append(batchedMessages, msg)
+		}
+
+		jobsStarted := []*actions.JobStarted{
+			{
+				JobMessageBase: actions.JobMessageBase{
+					JobMessageType: actions.JobMessageType{
+						MessageType: messageTypeJobStarted,
+					},
+					RunnerRequestId: 5,
+				},
+				RunnerId:   2,
+				RunnerName: "runner2",
+			},
+		}
+		for _, msg := range jobsStarted {
+			batchedMessages = append(batchedMessages, msg)
+		}
+
+		jobsCompleted := []*actions.JobCompleted{
+			{
+				JobMessageBase: actions.JobMessageBase{
+					JobMessageType: actions.JobMessageType{
+						MessageType: messageTypeJobCompleted,
+					},
+					RunnerRequestId: 6,
+				},
+				Result:     "success",
+				RunnerId:   1,
+				RunnerName: "runner1",
+			},
+		}
+		for _, msg := range jobsCompleted {
+			batchedMessages = append(batchedMessages, msg)
+		}
+
+		b, err := json.Marshal(batchedMessages)
+		require.NoError(t, err)
+
+		msg.Body = string(b)
+
+		l := &Listener{}
+		parsedMsg, err := l.parseMessage(context.Background(), msg)
+		require.NoError(t, err)
+
+		assert.Equal(t, msg.Statistics, parsedMsg.statistics)
+		assert.Equal(t, jobsAvailable, parsedMsg.jobsAvailable)
+		assert.Equal(t, jobsStarted, parsedMsg.jobsStarted)
+		assert.Equal(t, jobsCompleted, parsedMsg.jobsCompleted)
+	})
+}

cmd/ghalistener/listener/metrics_test.go

@@ -0,0 +1,205 @@
+package listener
+
+import (
+	"context"
+	"encoding/json"
+	"testing"
+
+	listenermocks "github.com/actions/actions-runner-controller/cmd/ghalistener/listener/mocks"
+	metricsmocks "github.com/actions/actions-runner-controller/cmd/ghalistener/metrics/mocks"
+	"github.com/actions/actions-runner-controller/github/actions"
+	"github.com/google/uuid"
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/mock"
+	"github.com/stretchr/testify/require"
+)
+
+func TestInitialMetrics(t *testing.T) {
+	t.Parallel()
+
+	t.Run("SetStaticMetrics", func(t *testing.T) {
+		t.Parallel()
+
+		metrics := metricsmocks.NewPublisher(t)
+
+		minRunners := 5
+		maxRunners := 10
+		metrics.On("PublishStatic", minRunners, maxRunners).Once()
+
+		config := Config{
+			Client:     listenermocks.NewClient(t),
+			ScaleSetID: 1,
+			Metrics:    metrics,
+			MinRunners: minRunners,
+			MaxRunners: maxRunners,
+		}
+		l, err := New(config)
+
+		assert.Nil(t, err)
+		assert.NotNil(t, l)
+	})
+
+	t.Run("InitialMessageStatistics", func(t *testing.T) {
+		t.Parallel()
+
+		ctx, cancel := context.WithCancel(context.Background())
+
+		sessionStatistics := &actions.RunnerScaleSetStatistic{
+			TotalAvailableJobs:     1,
+			TotalAcquiredJobs:      2,
+			TotalAssignedJobs:      3,
+			TotalRunningJobs:       4,
+			TotalRegisteredRunners: 5,
+			TotalBusyRunners:       6,
+			TotalIdleRunners:       7,
+		}
+
+		uuid := uuid.New()
+		session := &actions.RunnerScaleSetSession{
+			SessionId:               &uuid,
+			OwnerName:               "example",
+			RunnerScaleSet:          &actions.RunnerScaleSet{},
+			MessageQueueUrl:         "https://example.com",
+			MessageQueueAccessToken: "1234567890",
+			Statistics:              sessionStatistics,
+		}
+
+		metrics := metricsmocks.NewPublisher(t)
+		metrics.On("PublishStatic", mock.Anything, mock.Anything).Once()
+		metrics.On("PublishStatistics", sessionStatistics).Once()
+		metrics.On("PublishDesiredRunners", sessionStatistics.TotalAssignedJobs).
+			Run(
+				func(mock.Arguments) {
+					cancel()
+				},
+			).Once()
+
+		config := Config{
+			Client:     listenermocks.NewClient(t),
+			ScaleSetID: 1,
+			Metrics:    metrics,
+		}
+
+		client := listenermocks.NewClient(t)
+		client.On("CreateMessageSession", mock.Anything, mock.Anything, mock.Anything).Return(session, nil).Once()
+		client.On("DeleteMessageSession", mock.Anything, session.RunnerScaleSet.Id, session.SessionId).Return(nil).Once()
+		config.Client = client
+
+		handler := listenermocks.NewHandler(t)
+		handler.On("HandleDesiredRunnerCount", mock.Anything, sessionStatistics.TotalAssignedJobs, 0).
+			Return(sessionStatistics.TotalAssignedJobs, nil).
+			Once()
+
+		l, err := New(config)
+		assert.Nil(t, err)
+		assert.NotNil(t, l)
+
+		assert.ErrorIs(t, context.Canceled, l.Listen(ctx, handler))
+	})
+}
+
+func TestHandleMessageMetrics(t *testing.T) {
+	t.Parallel()
+
+	msg := &actions.RunnerScaleSetMessage{
+		MessageId:   1,
+		MessageType: "RunnerScaleSetJobMessages",
+		Body:        "",
+		Statistics: &actions.RunnerScaleSetStatistic{
+			TotalAvailableJobs:     1,
+			TotalAcquiredJobs:      2,
+			TotalAssignedJobs:      3,
+			TotalRunningJobs:       4,
+			TotalRegisteredRunners: 5,
+			TotalBusyRunners:       6,
+			TotalIdleRunners:       7,
+		},
+	}
+
+	var batchedMessages []any
+	jobsStarted := []*actions.JobStarted{
+		{
+			JobMessageBase: actions.JobMessageBase{
+				JobMessageType: actions.JobMessageType{
+					MessageType: messageTypeJobStarted,
+				},
+				RunnerRequestId: 8,
+			},
+			RunnerId:   3,
+			RunnerName: "runner3",
+		},
+	}
+	for _, msg := range jobsStarted {
+		batchedMessages = append(batchedMessages, msg)
+	}
+
+	jobsCompleted := []*actions.JobCompleted{
+		{
+			JobMessageBase: actions.JobMessageBase{
+				JobMessageType: actions.JobMessageType{
+					MessageType: messageTypeJobCompleted,
+				},
+				RunnerRequestId: 6,
+			},
+			Result:     "success",
+			RunnerId:   1,
+			RunnerName: "runner1",
+		},
+		{
+			JobMessageBase: actions.JobMessageBase{
+				JobMessageType: actions.JobMessageType{
+					MessageType: messageTypeJobCompleted,
+				},
+				RunnerRequestId: 7,
+			},
+			Result:     "success",
+			RunnerId:   2,
+			RunnerName: "runner2",
+		},
+	}
+	for _, msg := range jobsCompleted {
+		batchedMessages = append(batchedMessages, msg)
+	}
+
+	b, err := json.Marshal(batchedMessages)
+	require.NoError(t, err)
+
+	msg.Body = string(b)
+
+	desiredResult := 4
+
+	metrics := metricsmocks.NewPublisher(t)
+	metrics.On("PublishStatic", 0, 0).Once()
+	metrics.On("PublishStatistics", msg.Statistics).Once()
+	metrics.On("PublishJobCompleted", jobsCompleted[0]).Once()
+	metrics.On("PublishJobCompleted", jobsCompleted[1]).Once()
+	metrics.On("PublishJobStarted", jobsStarted[0]).Once()
+	metrics.On("PublishDesiredRunners", desiredResult).Once()
+
+	handler := listenermocks.NewHandler(t)
+	handler.On("HandleJobStarted", mock.Anything, jobsStarted[0]).Return(nil).Once()
+	handler.On("HandleDesiredRunnerCount", mock.Anything, mock.Anything, 2).Return(desiredResult, nil).Once()
+
+	client := listenermocks.NewClient(t)
+	client.On("DeleteMessage", mock.Anything, mock.Anything, mock.Anything, mock.Anything).Return(nil).Once()
+
+	config := Config{
+		Client:     listenermocks.NewClient(t),
+		ScaleSetID: 1,
+		Metrics:    metrics,
+	}
+
+	l, err := New(config)
+	require.NoError(t, err)
+	l.client = client
+	l.session = &actions.RunnerScaleSetSession{
+		OwnerName:               "",
+		RunnerScaleSet:          &actions.RunnerScaleSet{},
+		MessageQueueUrl:         "",
+		MessageQueueAccessToken: "",
+		Statistics:              &actions.RunnerScaleSetStatistic{},
+	}
+
+	err = l.handleMessage(context.Background(), handler, msg)
+	require.NoError(t, err)
+}

cmd/ghalistener/listener/mocks/client.go

@@ -0,0 +1,190 @@
+// Code generated by mockery v2.36.1. DO NOT EDIT.
+
+package mocks
+
+import (
+	context "context"
+
+	actions "github.com/actions/actions-runner-controller/github/actions"
+
+	mock "github.com/stretchr/testify/mock"
+
+	uuid "github.com/google/uuid"
+)
+
+// Client is an autogenerated mock type for the Client type
+type Client struct {
+	mock.Mock
+}
+
+// AcquireJobs provides a mock function with given fields: ctx, runnerScaleSetId, messageQueueAccessToken, requestIds
+func (_m *Client) AcquireJobs(ctx context.Context, runnerScaleSetId int, messageQueueAccessToken string, requestIds []int64) ([]int64, error) {
+	ret := _m.Called(ctx, runnerScaleSetId, messageQueueAccessToken, requestIds)
+
+	var r0 []int64
+	var r1 error
+	if rf, ok := ret.Get(0).(func(context.Context, int, string, []int64) ([]int64, error)); ok {
+		return rf(ctx, runnerScaleSetId, messageQueueAccessToken, requestIds)
+	}
+	if rf, ok := ret.Get(0).(func(context.Context, int, string, []int64) []int64); ok {
+		r0 = rf(ctx, runnerScaleSetId, messageQueueAccessToken, requestIds)
+	} else {
+		if ret.Get(0) != nil {
+			r0 = ret.Get(0).([]int64)
+		}
+	}
+
+	if rf, ok := ret.Get(1).(func(context.Context, int, string, []int64) error); ok {
+		r1 = rf(ctx, runnerScaleSetId, messageQueueAccessToken, requestIds)
+	} else {
+		r1 = ret.Error(1)
+	}
+
+	return r0, r1
+}
+
+// CreateMessageSession provides a mock function with given fields: ctx, runnerScaleSetId, owner
+func (_m *Client) CreateMessageSession(ctx context.Context, runnerScaleSetId int, owner string) (*actions.RunnerScaleSetSession, error) {
+	ret := _m.Called(ctx, runnerScaleSetId, owner)
+
+	var r0 *actions.RunnerScaleSetSession
+	var r1 error
+	if rf, ok := ret.Get(0).(func(context.Context, int, string) (*actions.RunnerScaleSetSession, error)); ok {
+		return rf(ctx, runnerScaleSetId, owner)
+	}
+	if rf, ok := ret.Get(0).(func(context.Context, int, string) *actions.RunnerScaleSetSession); ok {
+		r0 = rf(ctx, runnerScaleSetId, owner)
+	} else {
+		if ret.Get(0) != nil {
+			r0 = ret.Get(0).(*actions.RunnerScaleSetSession)
+		}
+	}
+
+	if rf, ok := ret.Get(1).(func(context.Context, int, string) error); ok {
+		r1 = rf(ctx, runnerScaleSetId, owner)
+	} else {
+		r1 = ret.Error(1)
+	}
+
+	return r0, r1
+}
+
+// DeleteMessage provides a mock function with given fields: ctx, messageQueueUrl, messageQueueAccessToken, messageId
+func (_m *Client) DeleteMessage(ctx context.Context, messageQueueUrl string, messageQueueAccessToken string, messageId int64) error {
+	ret := _m.Called(ctx, messageQueueUrl, messageQueueAccessToken, messageId)
+
+	var r0 error
+	if rf, ok := ret.Get(0).(func(context.Context, string, string, int64) error); ok {
+		r0 = rf(ctx, messageQueueUrl, messageQueueAccessToken, messageId)
+	} else {
+		r0 = ret.Error(0)
+	}
+
+	return r0
+}
+
+// DeleteMessageSession provides a mock function with given fields: ctx, runnerScaleSetId, sessionId
+func (_m *Client) DeleteMessageSession(ctx context.Context, runnerScaleSetId int, sessionId *uuid.UUID) error {
+	ret := _m.Called(ctx, runnerScaleSetId, sessionId)
+
+	var r0 error
+	if rf, ok := ret.Get(0).(func(context.Context, int, *uuid.UUID) error); ok {
+		r0 = rf(ctx, runnerScaleSetId, sessionId)
+	} else {
+		r0 = ret.Error(0)
+	}
+
+	return r0
+}
+
+// GetAcquirableJobs provides a mock function with given fields: ctx, runnerScaleSetId
+func (_m *Client) GetAcquirableJobs(ctx context.Context, runnerScaleSetId int) (*actions.AcquirableJobList, error) {
+	ret := _m.Called(ctx, runnerScaleSetId)
+
+	var r0 *actions.AcquirableJobList
+	var r1 error
+	if rf, ok := ret.Get(0).(func(context.Context, int) (*actions.AcquirableJobList, error)); ok {
+		return rf(ctx, runnerScaleSetId)
+	}
+	if rf, ok := ret.Get(0).(func(context.Context, int) *actions.AcquirableJobList); ok {
+		r0 = rf(ctx, runnerScaleSetId)
+	} else {
+		if ret.Get(0) != nil {
+			r0 = ret.Get(0).(*actions.AcquirableJobList)
+		}
+	}
+
+	if rf, ok := ret.Get(1).(func(context.Context, int) error); ok {
+		r1 = rf(ctx, runnerScaleSetId)
+	} else {
+		r1 = ret.Error(1)
+	}
+
+	return r0, r1
+}
+
+// GetMessage provides a mock function with given fields: ctx, messageQueueUrl, messageQueueAccessToken, lastMessageId, maxCapacity
+func (_m *Client) GetMessage(ctx context.Context, messageQueueUrl string, messageQueueAccessToken string, lastMessageId int64, maxCapacity int) (*actions.RunnerScaleSetMessage, error) {
+	ret := _m.Called(ctx, messageQueueUrl, messageQueueAccessToken, lastMessageId, maxCapacity)
+
+	var r0 *actions.RunnerScaleSetMessage
+	var r1 error
+	if rf, ok := ret.Get(0).(func(context.Context, string, string, int64, int) (*actions.RunnerScaleSetMessage, error)); ok {
+		return rf(ctx, messageQueueUrl, messageQueueAccessToken, lastMessageId, maxCapacity)
+	}
+	if rf, ok := ret.Get(0).(func(context.Context, string, string, int64, int) *actions.RunnerScaleSetMessage); ok {
+		r0 = rf(ctx, messageQueueUrl, messageQueueAccessToken, lastMessageId, maxCapacity)
+	} else {
+		if ret.Get(0) != nil {
+			r0 = ret.Get(0).(*actions.RunnerScaleSetMessage)
+		}
+	}
+
+	if rf, ok := ret.Get(1).(func(context.Context, string, string, int64, int) error); ok {
+		r1 = rf(ctx, messageQueueUrl, messageQueueAccessToken, lastMessageId, maxCapacity)
+	} else {
+		r1 = ret.Error(1)
+	}
+
+	return r0, r1
+}
+
+// RefreshMessageSession provides a mock function with given fields: ctx, runnerScaleSetId, sessionId
+func (_m *Client) RefreshMessageSession(ctx context.Context, runnerScaleSetId int, sessionId *uuid.UUID) (*actions.RunnerScaleSetSession, error) {
+	ret := _m.Called(ctx, runnerScaleSetId, sessionId)
+
+	var r0 *actions.RunnerScaleSetSession
+	var r1 error
+	if rf, ok := ret.Get(0).(func(context.Context, int, *uuid.UUID) (*actions.RunnerScaleSetSession, error)); ok {
+		return rf(ctx, runnerScaleSetId, sessionId)
+	}
+	if rf, ok := ret.Get(0).(func(context.Context, int, *uuid.UUID) *actions.RunnerScaleSetSession); ok {
+		r0 = rf(ctx, runnerScaleSetId, sessionId)
+	} else {
+		if ret.Get(0) != nil {
+			r0 = ret.Get(0).(*actions.RunnerScaleSetSession)
+		}
+	}
+
+	if rf, ok := ret.Get(1).(func(context.Context, int, *uuid.UUID) error); ok {
+		r1 = rf(ctx, runnerScaleSetId, sessionId)
+	} else {
+		r1 = ret.Error(1)
+	}
+
+	return r0, r1
+}
+
+// NewClient creates a new instance of Client. It also registers a testing interface on the mock and a cleanup function to assert the mocks expectations.
+// The first argument is typically a *testing.T value.
+func NewClient(t interface {
+	mock.TestingT
+	Cleanup(func())
+}) *Client {
+	mock := &Client{}
+	mock.Mock.Test(t)
+
+	t.Cleanup(func() { mock.AssertExpectations(t) })
+
+	return mock
+}

cmd/ghalistener/listener/mocks/handler.go

@@ -0,0 +1,68 @@
+// Code generated by mockery v2.36.1. DO NOT EDIT.
+
+package mocks
+
+import (
+	context "context"
+
+	actions "github.com/actions/actions-runner-controller/github/actions"
+
+	mock "github.com/stretchr/testify/mock"
+)
+
+// Handler is an autogenerated mock type for the Handler type
+type Handler struct {
+	mock.Mock
+}
+
+// HandleDesiredRunnerCount provides a mock function with given fields: ctx, count, jobsCompleted
+func (_m *Handler) HandleDesiredRunnerCount(ctx context.Context, count int, jobsCompleted int) (int, error) {
+	ret := _m.Called(ctx, count, jobsCompleted)
+
+	var r0 int
+	var r1 error
+	if rf, ok := ret.Get(0).(func(context.Context, int, int) (int, error)); ok {
+		return rf(ctx, count, jobsCompleted)
+	}
+	if rf, ok := ret.Get(0).(func(context.Context, int, int) int); ok {
+		r0 = rf(ctx, count, jobsCompleted)
+	} else {
+		r0 = ret.Get(0).(int)
+	}
+
+	if rf, ok := ret.Get(1).(func(context.Context, int, int) error); ok {
+		r1 = rf(ctx, count, jobsCompleted)
+	} else {
+		r1 = ret.Error(1)
+	}
+
+	return r0, r1
+}
+
+// HandleJobStarted provides a mock function with given fields: ctx, jobInfo
+func (_m *Handler) HandleJobStarted(ctx context.Context, jobInfo *actions.JobStarted) error {
+	ret := _m.Called(ctx, jobInfo)
+
+	var r0 error
+	if rf, ok := ret.Get(0).(func(context.Context, *actions.JobStarted) error); ok {
+		r0 = rf(ctx, jobInfo)
+	} else {
+		r0 = ret.Error(0)
+	}
+
+	return r0
+}
+
+// NewHandler creates a new instance of Handler. It also registers a testing interface on the mock and a cleanup function to assert the mocks expectations.
+// The first argument is typically a *testing.T value.
+func NewHandler(t interface {
+	mock.TestingT
+	Cleanup(func())
+}) *Handler {
+	mock := &Handler{}
+	mock.Mock.Test(t)
+
+	t.Cleanup(func() { mock.AssertExpectations(t) })
+
+	return mock
+}

cmd/ghalistener/main.go

@@ -0,0 +1,40 @@
+package main
+
+import (
+	"context"
+	"fmt"
+	"log"
+	"os"
+	"os/signal"
+	"syscall"
+
+	"github.com/actions/actions-runner-controller/cmd/ghalistener/app"
+	"github.com/actions/actions-runner-controller/cmd/ghalistener/config"
+)
+
+func main() {
+	configPath, ok := os.LookupEnv("LISTENER_CONFIG_PATH")
+	if !ok {
+		fmt.Fprintf(os.Stderr, "Error: LISTENER_CONFIG_PATH environment variable is not set\n")
+		os.Exit(1)
+	}
+	config, err := config.Read(configPath)
+	if err != nil {
+		log.Printf("Failed to read config: %v", err)
+		os.Exit(1)
+	}
+
+	app, err := app.New(config)
+	if err != nil {
+		log.Printf("Failed to initialize app: %v", err)
+		os.Exit(1)
+	}
+
+	ctx, stop := signal.NotifyContext(context.Background(), syscall.SIGINT, syscall.SIGTERM)
+	defer stop()
+
+	if err := app.Run(ctx); err != nil {
+		log.Printf("Application returned an error: %v", err)
+		os.Exit(1)
+	}
+}

cmd/ghalistener/metrics/metrics.go

@@ -0,0 +1,392 @@
+package metrics
+
+import (
+	"context"
+	"net/http"
+	"strconv"
+	"time"
+
+	"github.com/actions/actions-runner-controller/github/actions"
+	"github.com/go-logr/logr"
+	"github.com/prometheus/client_golang/prometheus"
+	"github.com/prometheus/client_golang/prometheus/promhttp"
+)
+
+const (
+	labelKeyRunnerScaleSetName      = "name"
+	labelKeyRunnerScaleSetNamespace = "namespace"
+	labelKeyEnterprise              = "enterprise"
+	labelKeyOrganization            = "organization"
+	labelKeyRepository              = "repository"
+	labelKeyJobName                 = "job_name"
+	labelKeyJobWorkflowRef          = "job_workflow_ref"
+	labelKeyEventName               = "event_name"
+	labelKeyJobResult               = "job_result"
+	labelKeyRunnerID                = "runner_id"
+	labelKeyRunnerName              = "runner_name"
+)
+
+const githubScaleSetSubsystem = "gha"
+
+// labels
+var (
+	scaleSetLabels = []string{
+		labelKeyRunnerScaleSetName,
+		labelKeyRepository,
+		labelKeyOrganization,
+		labelKeyEnterprise,
+		labelKeyRunnerScaleSetNamespace,
+	}
+
+	jobLabels = []string{
+		labelKeyRepository,
+		labelKeyOrganization,
+		labelKeyEnterprise,
+		labelKeyJobName,
+		labelKeyJobWorkflowRef,
+		labelKeyEventName,
+	}
+
+	completedJobsTotalLabels   = append(jobLabels, labelKeyJobResult, labelKeyRunnerID, labelKeyRunnerName)
+	jobExecutionDurationLabels = append(jobLabels, labelKeyJobResult, labelKeyRunnerID, labelKeyRunnerName)
+	startedJobsTotalLabels     = append(jobLabels, labelKeyRunnerID, labelKeyRunnerName)
+	jobStartupDurationLabels   = append(jobLabels, labelKeyRunnerID, labelKeyRunnerName)
+)
+
+var (
+	assignedJobs = prometheus.NewGaugeVec(
+		prometheus.GaugeOpts{
+			Subsystem: githubScaleSetSubsystem,
+			Name:      "assigned_jobs",
+			Help:      "Number of jobs assigned to this scale set.",
+		},
+		scaleSetLabels,
+	)
+
+	runningJobs = prometheus.NewGaugeVec(
+		prometheus.GaugeOpts{
+			Subsystem: githubScaleSetSubsystem,
+			Name:      "running_jobs",
+			Help:      "Number of jobs running (or about to be run).",
+		},
+		scaleSetLabels,
+	)
+
+	registeredRunners = prometheus.NewGaugeVec(
+		prometheus.GaugeOpts{
+			Subsystem: githubScaleSetSubsystem,
+			Name:      "registered_runners",
+			Help:      "Number of runners registered by the scale set.",
+		},
+		scaleSetLabels,
+	)
+
+	busyRunners = prometheus.NewGaugeVec(
+		prometheus.GaugeOpts{
+			Subsystem: githubScaleSetSubsystem,
+			Name:      "busy_runners",
+			Help:      "Number of registered runners running a job.",
+		},
+		scaleSetLabels,
+	)
+
+	minRunners = prometheus.NewGaugeVec(
+		prometheus.GaugeOpts{
+			Subsystem: githubScaleSetSubsystem,
+			Name:      "min_runners",
+			Help:      "Minimum number of runners.",
+		},
+		scaleSetLabels,
+	)
+
+	maxRunners = prometheus.NewGaugeVec(
+		prometheus.GaugeOpts{
+			Subsystem: githubScaleSetSubsystem,
+			Name:      "max_runners",
+			Help:      "Maximum number of runners.",
+		},
+		scaleSetLabels,
+	)
+
+	desiredRunners = prometheus.NewGaugeVec(
+		prometheus.GaugeOpts{
+			Subsystem: githubScaleSetSubsystem,
+			Name:      "desired_runners",
+			Help:      "Number of runners desired by the scale set.",
+		},
+		scaleSetLabels,
+	)
+
+	idleRunners = prometheus.NewGaugeVec(
+		prometheus.GaugeOpts{
+			Subsystem: githubScaleSetSubsystem,
+			Name:      "idle_runners",
+			Help:      "Number of registered runners not running a job.",
+		},
+		scaleSetLabels,
+	)
+
+	startedJobsTotal = prometheus.NewCounterVec(
+		prometheus.CounterOpts{
+			Subsystem: githubScaleSetSubsystem,
+			Name:      "started_jobs_total",
+			Help:      "Total number of jobs started.",
+		},
+		startedJobsTotalLabels,
+	)
+
+	completedJobsTotal = prometheus.NewCounterVec(
+		prometheus.CounterOpts{
+			Name:      "completed_jobs_total",
+			Help:      "Total number of jobs completed.",
+			Subsystem: githubScaleSetSubsystem,
+		},
+		completedJobsTotalLabels,
+	)
+
+	jobStartupDurationSeconds = prometheus.NewHistogramVec(
+		prometheus.HistogramOpts{
+			Subsystem: githubScaleSetSubsystem,
+			Name:      "job_startup_duration_seconds",
+			Help:      "Time spent waiting for workflow job to get started on the runner owned by the scale set (in seconds).",
+			Buckets:   runtimeBuckets,
+		},
+		jobStartupDurationLabels,
+	)
+
+	jobExecutionDurationSeconds = prometheus.NewHistogramVec(
+		prometheus.HistogramOpts{
+			Subsystem: githubScaleSetSubsystem,
+			Name:      "job_execution_duration_seconds",
+			Help:      "Time spent executing workflow jobs by the scale set (in seconds).",
+			Buckets:   runtimeBuckets,
+		},
+		jobExecutionDurationLabels,
+	)
+)
+
+var runtimeBuckets []float64 = []float64{
+	0.01,
+	0.05,
+	0.1,
+	0.5,
+	1,
+	2,
+	3,
+	4,
+	5,
+	6,
+	7,
+	8,
+	9,
+	10,
+	12,
+	15,
+	18,
+	20,
+	25,
+	30,
+	40,
+	50,
+	60,
+	70,
+	80,
+	90,
+	100,
+	110,
+	120,
+	150,
+	180,
+	210,
+	240,
+	300,
+	360,
+	420,
+	480,
+	540,
+	600,
+	900,
+	1200,
+	1800,
+	2400,
+	3000,
+	3600,
+}
+
+type baseLabels struct {
+	scaleSetName      string
+	scaleSetNamespace string
+	enterprise        string
+	organization      string
+	repository        string
+}
+
+func (b *baseLabels) jobLabels(jobBase *actions.JobMessageBase) prometheus.Labels {
+	return prometheus.Labels{
+		labelKeyEnterprise:     b.enterprise,
+		labelKeyOrganization:   jobBase.OwnerName,
+		labelKeyRepository:     jobBase.RepositoryName,
+		labelKeyJobName:        jobBase.JobDisplayName,
+		labelKeyJobWorkflowRef: jobBase.JobWorkflowRef,
+		labelKeyEventName:      jobBase.EventName,
+	}
+}
+
+func (b *baseLabels) scaleSetLabels() prometheus.Labels {
+	return prometheus.Labels{
+		labelKeyRunnerScaleSetName:      b.scaleSetName,
+		labelKeyRunnerScaleSetNamespace: b.scaleSetNamespace,
+		labelKeyEnterprise:              b.enterprise,
+		labelKeyOrganization:            b.organization,
+		labelKeyRepository:              b.repository,
+	}
+}
+
+func (b *baseLabels) completedJobLabels(msg *actions.JobCompleted) prometheus.Labels {
+	l := b.jobLabels(&msg.JobMessageBase)
+	l[labelKeyRunnerID] = strconv.Itoa(msg.RunnerId)
+	l[labelKeyJobResult] = msg.Result
+	l[labelKeyRunnerName] = msg.RunnerName
+	return l
+}
+
+func (b *baseLabels) startedJobLabels(msg *actions.JobStarted) prometheus.Labels {
+	l := b.jobLabels(&msg.JobMessageBase)
+	l[labelKeyRunnerID] = strconv.Itoa(msg.RunnerId)
+	l[labelKeyRunnerName] = msg.RunnerName
+	return l
+}
+
+//go:generate mockery --name Publisher --output ./mocks --outpkg mocks --case underscore
+type Publisher interface {
+	PublishStatic(min, max int)
+	PublishStatistics(stats *actions.RunnerScaleSetStatistic)
+	PublishJobStarted(msg *actions.JobStarted)
+	PublishJobCompleted(msg *actions.JobCompleted)
+	PublishDesiredRunners(count int)
+}
+
+//go:generate mockery --name ServerPublisher --output ./mocks --outpkg mocks --case underscore
+type ServerPublisher interface {
+	Publisher
+	ListenAndServe(ctx context.Context) error
+}
+
+var (
+	_ Publisher       = &discard{}
+	_ ServerPublisher = &exporter{}
+)
+
+var Discard Publisher = &discard{}
+
+type exporter struct {
+	logger logr.Logger
+	baseLabels
+	srv *http.Server
+}
+
+type ExporterConfig struct {
+	ScaleSetName      string
+	ScaleSetNamespace string
+	Enterprise        string
+	Organization      string
+	Repository        string
+	ServerAddr        string
+	ServerEndpoint    string
+	Logger            logr.Logger
+}
+
+func NewExporter(config ExporterConfig) ServerPublisher {
+	reg := prometheus.NewRegistry()
+	reg.MustRegister(
+		assignedJobs,
+		runningJobs,
+		registeredRunners,
+		busyRunners,
+		minRunners,
+		maxRunners,
+		desiredRunners,
+		idleRunners,
+		startedJobsTotal,
+		completedJobsTotal,
+		jobStartupDurationSeconds,
+		jobExecutionDurationSeconds,
+	)
+
+	mux := http.NewServeMux()
+	mux.Handle(
+		config.ServerEndpoint,
+		promhttp.HandlerFor(reg, promhttp.HandlerOpts{Registry: reg}),
+	)
+
+	return &exporter{
+		logger: config.Logger.WithName("metrics"),
+		baseLabels: baseLabels{
+			scaleSetName:      config.ScaleSetName,
+			scaleSetNamespace: config.ScaleSetNamespace,
+			enterprise:        config.Enterprise,
+			organization:      config.Organization,
+			repository:        config.Repository,
+		},
+		srv: &http.Server{
+			Addr:    config.ServerAddr,
+			Handler: mux,
+		},
+	}
+}
+
+func (e *exporter) ListenAndServe(ctx context.Context) error {
+	e.logger.Info("starting metrics server", "addr", e.srv.Addr)
+	go func() {
+		<-ctx.Done()
+		e.logger.Info("stopping metrics server", "err", ctx.Err())
+		ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
+		defer cancel()
+		e.srv.Shutdown(ctx)
+	}()
+	return e.srv.ListenAndServe()
+}
+
+func (m *exporter) PublishStatic(min, max int) {
+	l := m.scaleSetLabels()
+	maxRunners.With(l).Set(float64(max))
+	minRunners.With(l).Set(float64(min))
+}
+
+func (e *exporter) PublishStatistics(stats *actions.RunnerScaleSetStatistic) {
+	l := e.scaleSetLabels()
+
+	assignedJobs.With(l).Set(float64(stats.TotalAssignedJobs))
+	runningJobs.With(l).Set(float64(stats.TotalRunningJobs))
+	registeredRunners.With(l).Set(float64(stats.TotalRegisteredRunners))
+	busyRunners.With(l).Set(float64(stats.TotalBusyRunners))
+	idleRunners.With(l).Set(float64(stats.TotalIdleRunners))
+}
+
+func (e *exporter) PublishJobStarted(msg *actions.JobStarted) {
+	l := e.startedJobLabels(msg)
+	startedJobsTotal.With(l).Inc()
+
+	startupDuration := msg.JobMessageBase.RunnerAssignTime.Unix() - msg.JobMessageBase.ScaleSetAssignTime.Unix()
+	jobStartupDurationSeconds.With(l).Observe(float64(startupDuration))
+}
+
+func (e *exporter) PublishJobCompleted(msg *actions.JobCompleted) {
+	l := e.completedJobLabels(msg)
+	completedJobsTotal.With(l).Inc()
+
+	executionDuration := msg.JobMessageBase.FinishTime.Unix() - msg.JobMessageBase.RunnerAssignTime.Unix()
+	jobExecutionDurationSeconds.With(l).Observe(float64(executionDuration))
+}
+
+func (m *exporter) PublishDesiredRunners(count int) {
+	desiredRunners.With(m.scaleSetLabels()).Set(float64(count))
+}
+
+type discard struct{}
+
+func (*discard) PublishStatic(int, int)                             {}
+func (*discard) PublishStatistics(*actions.RunnerScaleSetStatistic) {}
+func (*discard) PublishJobStarted(*actions.JobStarted)              {}
+func (*discard) PublishJobCompleted(*actions.JobCompleted)          {}
+func (*discard) PublishDesiredRunners(int)                          {}

cmd/ghalistener/metrics/mocks/publisher.go

@@ -0,0 +1,53 @@
+// Code generated by mockery v2.36.1. DO NOT EDIT.
+
+package mocks
+
+import (
+	actions "github.com/actions/actions-runner-controller/github/actions"
+
+	mock "github.com/stretchr/testify/mock"
+)
+
+// Publisher is an autogenerated mock type for the Publisher type
+type Publisher struct {
+	mock.Mock
+}
+
+// PublishDesiredRunners provides a mock function with given fields: count
+func (_m *Publisher) PublishDesiredRunners(count int) {
+	_m.Called(count)
+}
+
+// PublishJobCompleted provides a mock function with given fields: msg
+func (_m *Publisher) PublishJobCompleted(msg *actions.JobCompleted) {
+	_m.Called(msg)
+}
+
+// PublishJobStarted provides a mock function with given fields: msg
+func (_m *Publisher) PublishJobStarted(msg *actions.JobStarted) {
+	_m.Called(msg)
+}
+
+// PublishStatic provides a mock function with given fields: min, max
+func (_m *Publisher) PublishStatic(min int, max int) {
+	_m.Called(min, max)
+}
+
+// PublishStatistics provides a mock function with given fields: stats
+func (_m *Publisher) PublishStatistics(stats *actions.RunnerScaleSetStatistic) {
+	_m.Called(stats)
+}
+
+// NewPublisher creates a new instance of Publisher. It also registers a testing interface on the mock and a cleanup function to assert the mocks expectations.
+// The first argument is typically a *testing.T value.
+func NewPublisher(t interface {
+	mock.TestingT
+	Cleanup(func())
+}) *Publisher {
+	mock := &Publisher{}
+	mock.Mock.Test(t)
+
+	t.Cleanup(func() { mock.AssertExpectations(t) })
+
+	return mock
+}

cmd/ghalistener/metrics/mocks/server_publisher.go

@@ -0,0 +1,69 @@
+// Code generated by mockery v2.36.1. DO NOT EDIT.
+
+package mocks
+
+import (
+	context "context"
+
+	actions "github.com/actions/actions-runner-controller/github/actions"
+
+	mock "github.com/stretchr/testify/mock"
+)
+
+// ServerPublisher is an autogenerated mock type for the ServerPublisher type
+type ServerPublisher struct {
+	mock.Mock
+}
+
+// ListenAndServe provides a mock function with given fields: ctx
+func (_m *ServerPublisher) ListenAndServe(ctx context.Context) error {
+	ret := _m.Called(ctx)
+
+	var r0 error
+	if rf, ok := ret.Get(0).(func(context.Context) error); ok {
+		r0 = rf(ctx)
+	} else {
+		r0 = ret.Error(0)
+	}
+
+	return r0
+}
+
+// PublishDesiredRunners provides a mock function with given fields: count
+func (_m *ServerPublisher) PublishDesiredRunners(count int) {
+	_m.Called(count)
+}
+
+// PublishJobCompleted provides a mock function with given fields: msg
+func (_m *ServerPublisher) PublishJobCompleted(msg *actions.JobCompleted) {
+	_m.Called(msg)
+}
+
+// PublishJobStarted provides a mock function with given fields: msg
+func (_m *ServerPublisher) PublishJobStarted(msg *actions.JobStarted) {
+	_m.Called(msg)
+}
+
+// PublishStatic provides a mock function with given fields: min, max
+func (_m *ServerPublisher) PublishStatic(min int, max int) {
+	_m.Called(min, max)
+}
+
+// PublishStatistics provides a mock function with given fields: stats
+func (_m *ServerPublisher) PublishStatistics(stats *actions.RunnerScaleSetStatistic) {
+	_m.Called(stats)
+}
+
+// NewServerPublisher creates a new instance of ServerPublisher. It also registers a testing interface on the mock and a cleanup function to assert the mocks expectations.
+// The first argument is typically a *testing.T value.
+func NewServerPublisher(t interface {
+	mock.TestingT
+	Cleanup(func())
+}) *ServerPublisher {
+	mock := &ServerPublisher{}
+	mock.Mock.Test(t)
+
+	t.Cleanup(func() { mock.AssertExpectations(t) })
+
+	return mock
+}

cmd/ghalistener/worker/worker.go

@@ -0,0 +1,257 @@
+package worker
+
+import (
+	"context"
+	"encoding/json"
+	"fmt"
+
+	"github.com/actions/actions-runner-controller/apis/actions.github.com/v1alpha1"
+	"github.com/actions/actions-runner-controller/cmd/ghalistener/listener"
+	"github.com/actions/actions-runner-controller/github/actions"
+	"github.com/actions/actions-runner-controller/logging"
+	jsonpatch "github.com/evanphx/json-patch"
+	"github.com/go-logr/logr"
+	kerrors "k8s.io/apimachinery/pkg/api/errors"
+	"k8s.io/apimachinery/pkg/types"
+	"k8s.io/client-go/kubernetes"
+	"k8s.io/client-go/rest"
+)
+
+const workerName = "kubernetesworker"
+
+type Option func(*Worker)
+
+func WithLogger(logger logr.Logger) Option {
+	return func(w *Worker) {
+		logger = logger.WithName(workerName)
+		w.logger = &logger
+	}
+}
+
+type Config struct {
+	EphemeralRunnerSetNamespace string
+	EphemeralRunnerSetName      string
+	MaxRunners                  int
+	MinRunners                  int
+}
+
+// The Worker's role is to process the messages it receives from the listener.
+// It then initiates Kubernetes API requests to carry out the necessary actions.
+type Worker struct {
+	clientset *kubernetes.Clientset
+	config    Config
+	lastPatch int
+	patchSeq  int
+	logger    *logr.Logger
+}
+
+var _ listener.Handler = (*Worker)(nil)
+
+func New(config Config, options ...Option) (*Worker, error) {
+	w := &Worker{
+		config:    config,
+		lastPatch: -1,
+		patchSeq:  -1,
+	}
+
+	conf, err := rest.InClusterConfig()
+	if err != nil {
+		return nil, err
+	}
+
+	clientset, err := kubernetes.NewForConfig(conf)
+	if err != nil {
+		return nil, err
+	}
+
+	w.clientset = clientset
+
+	for _, option := range options {
+		option(w)
+	}
+
+	if err := w.applyDefaults(); err != nil {
+		return nil, err
+	}
+
+	return w, nil
+}
+
+func (w *Worker) applyDefaults() error {
+	if w.logger == nil {
+		logger, err := logging.NewLogger(logging.LogLevelDebug, logging.LogFormatJSON)
+		if err != nil {
+			return fmt.Errorf("NewLogger failed: %w", err)
+		}
+		logger = logger.WithName(workerName)
+		w.logger = &logger
+	}
+
+	return nil
+}
+
+// HandleJobStarted updates the job information for the ephemeral runner when a job is started.
+// It takes a context and a jobInfo parameter which contains the details of the started job.
+// This update marks the ephemeral runner so that the controller would have more context
+// about the ephemeral runner that should not be deleted when scaling down.
+// It returns an error if there is any issue with updating the job information.
+func (w *Worker) HandleJobStarted(ctx context.Context, jobInfo *actions.JobStarted) error {
+	w.logger.Info("Updating job info for the runner",
+		"runnerName", jobInfo.RunnerName,
+		"ownerName", jobInfo.OwnerName,
+		"repoName", jobInfo.RepositoryName,
+		"workflowRef", jobInfo.JobWorkflowRef,
+		"workflowRunId", jobInfo.WorkflowRunId,
+		"jobDisplayName", jobInfo.JobDisplayName,
+		"requestId", jobInfo.RunnerRequestId)
+
+	original, err := json.Marshal(&v1alpha1.EphemeralRunner{})
+	if err != nil {
+		return fmt.Errorf("failed to marshal empty ephemeral runner: %w", err)
+	}
+
+	patch, err := json.Marshal(
+		&v1alpha1.EphemeralRunner{
+			Status: v1alpha1.EphemeralRunnerStatus{
+				JobRequestId:      jobInfo.RunnerRequestId,
+				JobRepositoryName: fmt.Sprintf("%s/%s", jobInfo.OwnerName, jobInfo.RepositoryName),
+				WorkflowRunId:     jobInfo.WorkflowRunId,
+				JobWorkflowRef:    jobInfo.JobWorkflowRef,
+				JobDisplayName:    jobInfo.JobDisplayName,
+			},
+		},
+	)
+	if err != nil {
+		return fmt.Errorf("failed to marshal ephemeral runner patch: %w", err)
+	}
+
+	mergePatch, err := jsonpatch.CreateMergePatch(original, patch)
+	if err != nil {
+		return fmt.Errorf("failed to create merge patch json for ephemeral runner: %w", err)
+	}
+
+	w.logger.Info("Updating ephemeral runner with merge patch", "json", string(mergePatch))
+
+	patchedStatus := &v1alpha1.EphemeralRunner{}
+	err = w.clientset.RESTClient().
+		Patch(types.MergePatchType).
+		Prefix("apis", v1alpha1.GroupVersion.Group, v1alpha1.GroupVersion.Version).
+		Namespace(w.config.EphemeralRunnerSetNamespace).
+		Resource("EphemeralRunners").
+		Name(jobInfo.RunnerName).
+		SubResource("status").
+		Body(mergePatch).
+		Do(ctx).
+		Into(patchedStatus)
+	if err != nil {
+		if kerrors.IsNotFound(err) {
+			w.logger.Info("Ephemeral runner not found, skipping patching of ephemeral runner status", "runnerName", jobInfo.RunnerName)
+			return nil
+		}
+		return fmt.Errorf("could not patch ephemeral runner status, patch JSON: %s, error: %w", string(mergePatch), err)
+	}
+
+	w.logger.Info("Ephemeral runner status updated with the merge patch successfully.")
+
+	return nil
+}
+
+// HandleDesiredRunnerCount handles the desired runner count by scaling the ephemeral runner set.
+// The function calculates the target runner count based on the minimum and maximum runner count configuration.
+// If the target runner count is the same as the last patched count, it skips patching and returns nil.
+// Otherwise, it creates a merge patch JSON for updating the ephemeral runner set with the desired count.
+// The function then scales the ephemeral runner set by applying the merge patch.
+// Finally, it logs the scaled ephemeral runner set details and returns nil if successful.
+// If any error occurs during the process, it returns an error with a descriptive message.
+func (w *Worker) HandleDesiredRunnerCount(ctx context.Context, count, jobsCompleted int) (int, error) {
+	patchID := w.setDesiredWorkerState(count, jobsCompleted)
+
+	original, err := json.Marshal(
+		&v1alpha1.EphemeralRunnerSet{
+			Spec: v1alpha1.EphemeralRunnerSetSpec{
+				Replicas: -1,
+				PatchID:  -1,
+			},
+		},
+	)
+	if err != nil {
+		return 0, fmt.Errorf("failed to marshal empty ephemeral runner set: %w", err)
+	}
+
+	patch, err := json.Marshal(
+		&v1alpha1.EphemeralRunnerSet{
+			Spec: v1alpha1.EphemeralRunnerSetSpec{
+				Replicas: w.lastPatch,
+				PatchID:  patchID,
+			},
+		},
+	)
+	if err != nil {
+		w.logger.Error(err, "could not marshal patch ephemeral runner set")
+		return 0, err
+	}
+
+	w.logger.Info("Compare", "original", string(original), "patch", string(patch))
+	mergePatch, err := jsonpatch.CreateMergePatch(original, patch)
+	if err != nil {
+		return 0, fmt.Errorf("failed to create merge patch json for ephemeral runner set: %w", err)
+	}
+
+	w.logger.Info("Preparing EphemeralRunnerSet update", "json", string(mergePatch))
+
+	patchedEphemeralRunnerSet := &v1alpha1.EphemeralRunnerSet{}
+	err = w.clientset.RESTClient().
+		Patch(types.MergePatchType).
+		Prefix("apis", v1alpha1.GroupVersion.Group, v1alpha1.GroupVersion.Version).
+		Namespace(w.config.EphemeralRunnerSetNamespace).
+		Resource("ephemeralrunnersets").
+		Name(w.config.EphemeralRunnerSetName).
+		Body([]byte(mergePatch)).
+		Do(ctx).
+		Into(patchedEphemeralRunnerSet)
+	if err != nil {
+		return 0, fmt.Errorf("could not patch ephemeral runner set , patch JSON: %s, error: %w", string(mergePatch), err)
+	}
+
+	w.logger.Info("Ephemeral runner set scaled.",
+		"namespace", w.config.EphemeralRunnerSetNamespace,
+		"name", w.config.EphemeralRunnerSetName,
+		"replicas", patchedEphemeralRunnerSet.Spec.Replicas,
+	)
+	return w.lastPatch, nil
+}
+
+// calculateDesiredState calculates the desired state of the worker based on the desired count and the the number of jobs completed.
+func (w *Worker) setDesiredWorkerState(count, jobsCompleted int) int {
+	// Max runners should always be set by the resource builder either to the configured value,
+	// or the maximum int32 (resourcebuilder.newAutoScalingListener()).
+	targetRunnerCount := min(w.config.MinRunners+count, w.config.MaxRunners)
+	w.patchSeq++
+	desiredPatchID := w.patchSeq
+
+	if count == 0 && jobsCompleted == 0 { // empty batch
+		targetRunnerCount = max(w.lastPatch, targetRunnerCount)
+		if targetRunnerCount == w.config.MinRunners {
+			// We have an empty batch, and the last patch was the min runners.
+			// Since this is an empty batch, and we are at the min runners, they should all be idle.
+			// If controller created few more pods on accident (during scale down events),
+			// this situation allows the controller to scale down to the min runners.
+			// However, it is important to keep the patch sequence increasing so we don't ignore one batch.
+			desiredPatchID = 0
+		}
+	}
+
+	w.lastPatch = targetRunnerCount
+
+	w.logger.Info(
+		"Calculated target runner count",
+		"assigned job", count,
+		"decision", targetRunnerCount,
+		"min", w.config.MinRunners,
+		"max", w.config.MaxRunners,
+		"currentRunnerCount", w.lastPatch,
+		"jobsCompleted", jobsCompleted,
+	)
+
+	return desiredPatchID
+}

cmd/ghalistener/worker/worker_test.go

@@ -0,0 +1,326 @@
+package worker
+
+import (
+	"math"
+	"testing"
+
+	"github.com/go-logr/logr"
+	"github.com/stretchr/testify/assert"
+)
+
+func TestSetDesiredWorkerState_MinMaxDefaults(t *testing.T) {
+	logger := logr.Discard()
+	newEmptyWorker := func() *Worker {
+		return &Worker{
+			config: Config{
+				MinRunners: 0,
+				MaxRunners: math.MaxInt32,
+			},
+			lastPatch: -1,
+			patchSeq:  -1,
+			logger:    &logger,
+		}
+	}
+
+	t.Run("init calculate with acquired 0", func(t *testing.T) {
+		w := newEmptyWorker()
+		patchID := w.setDesiredWorkerState(0, 0)
+		assert.Equal(t, 0, w.lastPatch)
+		assert.Equal(t, 0, w.patchSeq)
+		assert.Equal(t, 0, patchID)
+	})
+
+	t.Run("init calculate with acquired 1", func(t *testing.T) {
+		w := newEmptyWorker()
+		patchID := w.setDesiredWorkerState(1, 0)
+		assert.Equal(t, 1, w.lastPatch)
+		assert.Equal(t, 0, w.patchSeq)
+		assert.Equal(t, 0, patchID)
+	})
+
+	t.Run("increment patch when job done", func(t *testing.T) {
+		w := newEmptyWorker()
+		patchID := w.setDesiredWorkerState(1, 0)
+		assert.Equal(t, 0, patchID)
+		patchID = w.setDesiredWorkerState(0, 1)
+		assert.Equal(t, 1, patchID)
+		assert.Equal(t, 0, w.lastPatch)
+		assert.Equal(t, 1, w.patchSeq)
+	})
+
+	t.Run("increment patch when called with same parameters", func(t *testing.T) {
+		w := newEmptyWorker()
+		patchID := w.setDesiredWorkerState(1, 0)
+		assert.Equal(t, 0, patchID)
+		patchID = w.setDesiredWorkerState(1, 0)
+		assert.Equal(t, 1, patchID)
+		assert.Equal(t, 1, w.lastPatch)
+		assert.Equal(t, 1, w.patchSeq)
+	})
+
+	t.Run("calculate desired scale when acquired > 0 and completed > 0", func(t *testing.T) {
+		w := newEmptyWorker()
+		patchID := w.setDesiredWorkerState(1, 1)
+		assert.Equal(t, 0, patchID)
+		assert.Equal(t, 1, w.lastPatch)
+		assert.Equal(t, 0, w.patchSeq)
+	})
+
+	t.Run("re-use the last state when acquired == 0 and completed == 0", func(t *testing.T) {
+		w := newEmptyWorker()
+		patchID := w.setDesiredWorkerState(1, 0)
+		assert.Equal(t, 0, patchID)
+		patchID = w.setDesiredWorkerState(0, 0)
+		assert.Equal(t, 1, patchID)
+		assert.Equal(t, 1, w.lastPatch)
+		assert.Equal(t, 1, w.patchSeq)
+	})
+
+	t.Run("adjust when acquired == 0 and completed == 1", func(t *testing.T) {
+		w := newEmptyWorker()
+		patchID := w.setDesiredWorkerState(1, 1)
+		assert.Equal(t, 0, patchID)
+		patchID = w.setDesiredWorkerState(0, 1)
+		assert.Equal(t, 1, patchID)
+		assert.Equal(t, 0, w.lastPatch)
+		assert.Equal(t, 1, w.patchSeq)
+	})
+}
+
+func TestSetDesiredWorkerState_MinSet(t *testing.T) {
+	logger := logr.Discard()
+	newEmptyWorker := func() *Worker {
+		return &Worker{
+			config: Config{
+				MinRunners: 1,
+				MaxRunners: math.MaxInt32,
+			},
+			lastPatch: -1,
+			patchSeq:  -1,
+			logger:    &logger,
+		}
+	}
+
+	t.Run("initial scale when acquired == 0 and completed == 0", func(t *testing.T) {
+		w := newEmptyWorker()
+		patchID := w.setDesiredWorkerState(0, 0)
+		assert.Equal(t, 0, patchID)
+		assert.Equal(t, 1, w.lastPatch)
+		assert.Equal(t, 0, w.patchSeq)
+	})
+
+	t.Run("re-use the old state on count == 0 and completed == 0", func(t *testing.T) {
+		w := newEmptyWorker()
+		patchID := w.setDesiredWorkerState(2, 0)
+		assert.Equal(t, 0, patchID)
+		patchID = w.setDesiredWorkerState(0, 0)
+		assert.Equal(t, 1, patchID)
+		assert.Equal(t, 3, w.lastPatch)
+		assert.Equal(t, 1, w.patchSeq)
+	})
+
+	t.Run("request back to 0 on job done", func(t *testing.T) {
+		w := newEmptyWorker()
+		patchID := w.setDesiredWorkerState(2, 0)
+		assert.Equal(t, 0, patchID)
+		patchID = w.setDesiredWorkerState(0, 1)
+		assert.Equal(t, 1, patchID)
+		assert.Equal(t, 1, w.lastPatch)
+		assert.Equal(t, 1, w.patchSeq)
+	})
+
+	t.Run("desired patch is 0 but sequence continues on empty batch and min runners", func(t *testing.T) {
+		w := newEmptyWorker()
+		patchID := w.setDesiredWorkerState(3, 0)
+		assert.Equal(t, 0, patchID)
+		assert.Equal(t, 4, w.lastPatch)
+		assert.Equal(t, 0, w.patchSeq)
+
+		patchID = w.setDesiredWorkerState(0, 3)
+		assert.Equal(t, 1, patchID)
+		assert.Equal(t, 1, w.lastPatch)
+		assert.Equal(t, 1, w.patchSeq)
+
+		// Empty batch on min runners
+		patchID = w.setDesiredWorkerState(0, 0)
+		assert.Equal(t, 0, patchID) // forcing the state
+		assert.Equal(t, 1, w.lastPatch)
+		assert.Equal(t, 2, w.patchSeq)
+	})
+
+}
+
+func TestSetDesiredWorkerState_MaxSet(t *testing.T) {
+	logger := logr.Discard()
+	newEmptyWorker := func() *Worker {
+		return &Worker{
+			config: Config{
+				MinRunners: 0,
+				MaxRunners: 5,
+			},
+			lastPatch: -1,
+			patchSeq:  -1,
+			logger:    &logger,
+		}
+	}
+
+	t.Run("initial scale when acquired == 0 and completed == 0", func(t *testing.T) {
+		w := newEmptyWorker()
+		patchID := w.setDesiredWorkerState(0, 0)
+		assert.Equal(t, 0, patchID)
+		assert.Equal(t, 0, w.lastPatch)
+		assert.Equal(t, 0, w.patchSeq)
+	})
+
+	t.Run("re-use the old state on count == 0 and completed == 0", func(t *testing.T) {
+		w := newEmptyWorker()
+		patchID := w.setDesiredWorkerState(2, 0)
+		assert.Equal(t, 0, patchID)
+		patchID = w.setDesiredWorkerState(0, 0)
+		assert.Equal(t, 1, patchID)
+		assert.Equal(t, 2, w.lastPatch)
+		assert.Equal(t, 1, w.patchSeq)
+	})
+
+	t.Run("request back to 0 on job done", func(t *testing.T) {
+		w := newEmptyWorker()
+		patchID := w.setDesiredWorkerState(2, 0)
+		assert.Equal(t, 0, patchID)
+		patchID = w.setDesiredWorkerState(0, 1)
+		assert.Equal(t, 1, patchID)
+		assert.Equal(t, 0, w.lastPatch)
+		assert.Equal(t, 1, w.patchSeq)
+	})
+
+	t.Run("scale up to max when count > max", func(t *testing.T) {
+		w := newEmptyWorker()
+		patchID := w.setDesiredWorkerState(6, 0)
+		assert.Equal(t, 0, patchID)
+		assert.Equal(t, 5, w.lastPatch)
+		assert.Equal(t, 0, w.patchSeq)
+	})
+
+	t.Run("scale to max when count == max", func(t *testing.T) {
+		w := newEmptyWorker()
+		w.setDesiredWorkerState(5, 0)
+		assert.Equal(t, 5, w.lastPatch)
+		assert.Equal(t, 0, w.patchSeq)
+	})
+
+	t.Run("scale to max when count > max and completed > 0", func(t *testing.T) {
+		w := newEmptyWorker()
+		patchID := w.setDesiredWorkerState(1, 0)
+		assert.Equal(t, 0, patchID)
+		patchID = w.setDesiredWorkerState(6, 1)
+		assert.Equal(t, 1, patchID)
+		assert.Equal(t, 5, w.lastPatch)
+		assert.Equal(t, 1, w.patchSeq)
+	})
+
+	t.Run("scale back to 0 when count was > max", func(t *testing.T) {
+		w := newEmptyWorker()
+		patchID := w.setDesiredWorkerState(6, 0)
+		assert.Equal(t, 0, patchID)
+		patchID = w.setDesiredWorkerState(0, 1)
+		assert.Equal(t, 1, patchID)
+		assert.Equal(t, 0, w.lastPatch)
+		assert.Equal(t, 1, w.patchSeq)
+	})
+
+	t.Run("force 0 on empty batch and last patch == min runners", func(t *testing.T) {
+		w := newEmptyWorker()
+		patchID := w.setDesiredWorkerState(3, 0)
+		assert.Equal(t, 0, patchID)
+		assert.Equal(t, 3, w.lastPatch)
+		assert.Equal(t, 0, w.patchSeq)
+
+		patchID = w.setDesiredWorkerState(0, 3)
+		assert.Equal(t, 1, patchID)
+		assert.Equal(t, 0, w.lastPatch)
+		assert.Equal(t, 1, w.patchSeq)
+
+		// Empty batch on min runners
+		patchID = w.setDesiredWorkerState(0, 0)
+		assert.Equal(t, 0, patchID) // forcing the state
+		assert.Equal(t, 0, w.lastPatch)
+		assert.Equal(t, 2, w.patchSeq)
+	})
+}
+
+func TestSetDesiredWorkerState_MinMaxSet(t *testing.T) {
+	logger := logr.Discard()
+	newEmptyWorker := func() *Worker {
+		return &Worker{
+			config: Config{
+				MinRunners: 1,
+				MaxRunners: 3,
+			},
+			lastPatch: -1,
+			patchSeq:  -1,
+			logger:    &logger,
+		}
+	}
+
+	t.Run("initial scale when acquired == 0 and completed == 0", func(t *testing.T) {
+		w := newEmptyWorker()
+		patchID := w.setDesiredWorkerState(0, 0)
+		assert.Equal(t, 0, patchID)
+		assert.Equal(t, 1, w.lastPatch)
+		assert.Equal(t, 0, w.patchSeq)
+	})
+
+	t.Run("re-use the old state on count == 0 and completed == 0", func(t *testing.T) {
+		w := newEmptyWorker()
+		patchID := w.setDesiredWorkerState(2, 0)
+		assert.Equal(t, 0, patchID)
+		patchID = w.setDesiredWorkerState(0, 0)
+		assert.Equal(t, 1, patchID)
+		assert.Equal(t, 3, w.lastPatch)
+		assert.Equal(t, 1, w.patchSeq)
+	})
+
+	t.Run("scale to min when count == 0", func(t *testing.T) {
+		w := newEmptyWorker()
+		patchID := w.setDesiredWorkerState(2, 0)
+		assert.Equal(t, 0, patchID)
+		patchID = w.setDesiredWorkerState(0, 1)
+		assert.Equal(t, 1, patchID)
+		assert.Equal(t, 1, w.lastPatch)
+		assert.Equal(t, 1, w.patchSeq)
+	})
+
+	t.Run("scale up to max when count > max", func(t *testing.T) {
+		w := newEmptyWorker()
+		patchID := w.setDesiredWorkerState(4, 0)
+		assert.Equal(t, 0, patchID)
+		assert.Equal(t, 3, w.lastPatch)
+		assert.Equal(t, 0, w.patchSeq)
+	})
+
+	t.Run("scale to max when count == max", func(t *testing.T) {
+		w := newEmptyWorker()
+		patchID := w.setDesiredWorkerState(3, 0)
+		assert.Equal(t, 0, patchID)
+		assert.Equal(t, 3, w.lastPatch)
+		assert.Equal(t, 0, w.patchSeq)
+	})
+
+	t.Run("force 0 on empty batch and last patch == min runners", func(t *testing.T) {
+		w := newEmptyWorker()
+		patchID := w.setDesiredWorkerState(3, 0)
+		assert.Equal(t, 0, patchID)
+		assert.Equal(t, 3, w.lastPatch)
+		assert.Equal(t, 0, w.patchSeq)
+
+		patchID = w.setDesiredWorkerState(0, 3)
+		assert.Equal(t, 1, patchID)
+		assert.Equal(t, 1, w.lastPatch)
+		assert.Equal(t, 1, w.patchSeq)
+
+		// Empty batch on min runners
+		patchID = w.setDesiredWorkerState(0, 0)
+		assert.Equal(t, 0, patchID) // forcing the state
+		assert.Equal(t, 1, w.lastPatch)
+		assert.Equal(t, 2, w.patchSeq)
+	})
+}

cmd/githubrunnerscalesetlistener/autoScalerMessageListener.go

@@ -129,7 +129,7 @@ func (m *AutoScalerClient) Close() error {
 	return m.client.Close()
 }
 
-func (m *AutoScalerClient) GetRunnerScaleSetMessage(ctx context.Context, handler func(msg *actions.RunnerScaleSetMessage) error) error {
+func (m *AutoScalerClient) GetRunnerScaleSetMessage(ctx context.Context, handler func(msg *actions.RunnerScaleSetMessage) error, maxCapacity int) error {
 	if m.initialMessage != nil {
 		err := handler(m.initialMessage)
 		if err != nil {
@@ -141,7 +141,7 @@ func (m *AutoScalerClient) GetRunnerScaleSetMessage(ctx context.Context, handler
 	}
 
 	for {
-		message, err := m.client.GetMessage(ctx, m.lastMessageId)
+		message, err := m.client.GetMessage(ctx, m.lastMessageId, maxCapacity)
 		if err != nil {
 			return fmt.Errorf("get message failed from refreshing client. %w", err)
 		}

cmd/githubrunnerscalesetlistener/autoScalerMessageListener_test.go

@@ -317,7 +317,7 @@ func TestGetRunnerScaleSetMessage(t *testing.T) {
 		Statistics: &actions.RunnerScaleSetStatistic{},
 	}
 	mockActionsClient.On("CreateMessageSession", ctx, 1, mock.Anything).Return(session, nil)
-	mockSessionClient.On("GetMessage", ctx, int64(0)).Return(&actions.RunnerScaleSetMessage{
+	mockSessionClient.On("GetMessage", ctx, int64(0), mock.Anything).Return(&actions.RunnerScaleSetMessage{
 		MessageId:   1,
 		MessageType: "test",
 		Body:        "test",
@@ -332,7 +332,7 @@ func TestGetRunnerScaleSetMessage(t *testing.T) {
 	err = asClient.GetRunnerScaleSetMessage(ctx, func(msg *actions.RunnerScaleSetMessage) error {
 		logger.Info("Message received", "messageId", msg.MessageId, "messageType", msg.MessageType, "body", msg.Body)
 		return nil
-	})
+	}, 10)
 
 	assert.NoError(t, err, "Error getting message")
 	assert.Equal(t, int64(0), asClient.lastMessageId, "Initial message")
@@ -340,7 +340,7 @@ func TestGetRunnerScaleSetMessage(t *testing.T) {
 	err = asClient.GetRunnerScaleSetMessage(ctx, func(msg *actions.RunnerScaleSetMessage) error {
 		logger.Info("Message received", "messageId", msg.MessageId, "messageType", msg.MessageType, "body", msg.Body)
 		return nil
-	})
+	}, 10)
 
 	assert.NoError(t, err, "Error getting message")
 	assert.Equal(t, int64(1), asClient.lastMessageId, "Last message id should be updated")
@@ -368,7 +368,7 @@ func TestGetRunnerScaleSetMessage_HandleFailed(t *testing.T) {
 		Statistics: &actions.RunnerScaleSetStatistic{},
 	}
 	mockActionsClient.On("CreateMessageSession", ctx, 1, mock.Anything).Return(session, nil)
-	mockSessionClient.On("GetMessage", ctx, int64(0)).Return(&actions.RunnerScaleSetMessage{
+	mockSessionClient.On("GetMessage", ctx, int64(0), mock.Anything).Return(&actions.RunnerScaleSetMessage{
 		MessageId:   1,
 		MessageType: "test",
 		Body:        "test",
@@ -383,14 +383,14 @@ func TestGetRunnerScaleSetMessage_HandleFailed(t *testing.T) {
 	err = asClient.GetRunnerScaleSetMessage(ctx, func(msg *actions.RunnerScaleSetMessage) error {
 		logger.Info("Message received", "messageId", msg.MessageId, "messageType", msg.MessageType, "body", msg.Body)
 		return nil
-	})
+	}, 10)
 
 	assert.NoError(t, err, "Error getting message")
 
 	err = asClient.GetRunnerScaleSetMessage(ctx, func(msg *actions.RunnerScaleSetMessage) error {
 		logger.Info("Message received", "messageId", msg.MessageId, "messageType", msg.MessageType, "body", msg.Body)
 		return fmt.Errorf("error")
-	})
+	}, 10)
 
 	assert.ErrorContains(t, err, "handle message failed. error", "Error getting message")
 	assert.Equal(t, int64(0), asClient.lastMessageId, "Last message id should not be updated")
@@ -419,7 +419,7 @@ func TestGetRunnerScaleSetMessage_HandleInitialMessage(t *testing.T) {
 			TotalAssignedJobs:  2,
 		},
 	}
-	mockActionsClient.On("CreateMessageSession", ctx, 1, mock.Anything).Return(session, nil)
+	mockActionsClient.On("CreateMessageSession", ctx, 1, mock.Anything, mock.Anything).Return(session, nil)
 	mockActionsClient.On("GetAcquirableJobs", ctx, 1).Return(&actions.AcquirableJobList{
 		Count: 1,
 		Jobs: []actions.AcquirableJob{
@@ -439,7 +439,7 @@ func TestGetRunnerScaleSetMessage_HandleInitialMessage(t *testing.T) {
 	err = asClient.GetRunnerScaleSetMessage(ctx, func(msg *actions.RunnerScaleSetMessage) error {
 		logger.Info("Message received", "messageId", msg.MessageId, "messageType", msg.MessageType, "body", msg.Body)
 		return nil
-	})
+	}, 10)
 
 	assert.NoError(t, err, "Error getting message")
 	assert.Nil(t, asClient.initialMessage, "Initial message should be nil")
@@ -488,7 +488,7 @@ func TestGetRunnerScaleSetMessage_HandleInitialMessageFailed(t *testing.T) {
 	err = asClient.GetRunnerScaleSetMessage(ctx, func(msg *actions.RunnerScaleSetMessage) error {
 		logger.Info("Message received", "messageId", msg.MessageId, "messageType", msg.MessageType, "body", msg.Body)
 		return fmt.Errorf("error")
-	})
+	}, 10)
 
 	assert.ErrorContains(t, err, "fail to process initial message. error", "Error getting message")
 	assert.NotNil(t, asClient.initialMessage, "Initial message should be nil")
@@ -516,8 +516,8 @@ func TestGetRunnerScaleSetMessage_RetryUntilGetMessage(t *testing.T) {
 		Statistics: &actions.RunnerScaleSetStatistic{},
 	}
 	mockActionsClient.On("CreateMessageSession", ctx, 1, mock.Anything).Return(session, nil)
-	mockSessionClient.On("GetMessage", ctx, int64(0)).Return(nil, nil).Times(3)
+	mockSessionClient.On("GetMessage", ctx, int64(0), mock.Anything).Return(nil, nil).Times(3)
-	mockSessionClient.On("GetMessage", ctx, int64(0)).Return(&actions.RunnerScaleSetMessage{
+	mockSessionClient.On("GetMessage", ctx, int64(0), mock.Anything).Return(&actions.RunnerScaleSetMessage{
 		MessageId:   1,
 		MessageType: "test",
 		Body:        "test",
@@ -532,13 +532,13 @@ func TestGetRunnerScaleSetMessage_RetryUntilGetMessage(t *testing.T) {
 	err = asClient.GetRunnerScaleSetMessage(ctx, func(msg *actions.RunnerScaleSetMessage) error {
 		logger.Info("Message received", "messageId", msg.MessageId, "messageType", msg.MessageType, "body", msg.Body)
 		return nil
-	})
+	}, 10)
 	assert.NoError(t, err, "Error getting initial message")
 
 	err = asClient.GetRunnerScaleSetMessage(ctx, func(msg *actions.RunnerScaleSetMessage) error {
 		logger.Info("Message received", "messageId", msg.MessageId, "messageType", msg.MessageType, "body", msg.Body)
 		return nil
-	})
+	}, 10)
 
 	assert.NoError(t, err, "Error getting message")
 	assert.Equal(t, int64(1), asClient.lastMessageId, "Last message id should be updated")
@@ -565,7 +565,7 @@ func TestGetRunnerScaleSetMessage_ErrorOnGetMessage(t *testing.T) {
 		Statistics: &actions.RunnerScaleSetStatistic{},
 	}
 	mockActionsClient.On("CreateMessageSession", ctx, 1, mock.Anything).Return(session, nil)
-	mockSessionClient.On("GetMessage", ctx, int64(0)).Return(nil, fmt.Errorf("error"))
+	mockSessionClient.On("GetMessage", ctx, int64(0), mock.Anything).Return(nil, fmt.Errorf("error"))
 
 	asClient, err := NewAutoScalerClient(ctx, mockActionsClient, &logger, 1, func(asc *AutoScalerClient) {
 		asc.client = mockSessionClient
@@ -575,12 +575,12 @@ func TestGetRunnerScaleSetMessage_ErrorOnGetMessage(t *testing.T) {
 	// process initial message
 	err = asClient.GetRunnerScaleSetMessage(ctx, func(msg *actions.RunnerScaleSetMessage) error {
 		return nil
-	})
+	}, 10)
 	assert.NoError(t, err, "Error getting initial message")
 
 	err = asClient.GetRunnerScaleSetMessage(ctx, func(msg *actions.RunnerScaleSetMessage) error {
 		return fmt.Errorf("Should not be called")
-	})
+	}, 10)
 
 	assert.ErrorContains(t, err, "get message failed from refreshing client. error", "Error should be returned")
 	assert.Equal(t, int64(0), asClient.lastMessageId, "Last message id should be updated")
@@ -608,7 +608,7 @@ func TestDeleteRunnerScaleSetMessage_Error(t *testing.T) {
 		Statistics: &actions.RunnerScaleSetStatistic{},
 	}
 	mockActionsClient.On("CreateMessageSession", ctx, 1, mock.Anything).Return(session, nil)
-	mockSessionClient.On("GetMessage", ctx, int64(0)).Return(&actions.RunnerScaleSetMessage{
+	mockSessionClient.On("GetMessage", ctx, int64(0), mock.Anything).Return(&actions.RunnerScaleSetMessage{
 		MessageId:   1,
 		MessageType: "test",
 		Body:        "test",
@@ -623,13 +623,13 @@ func TestDeleteRunnerScaleSetMessage_Error(t *testing.T) {
 	err = asClient.GetRunnerScaleSetMessage(ctx, func(msg *actions.RunnerScaleSetMessage) error {
 		logger.Info("Message received", "messageId", msg.MessageId, "messageType", msg.MessageType, "body", msg.Body)
 		return nil
-	})
+	}, 10)
 	assert.NoError(t, err, "Error getting initial message")
 
 	err = asClient.GetRunnerScaleSetMessage(ctx, func(msg *actions.RunnerScaleSetMessage) error {
 		logger.Info("Message received", "messageId", msg.MessageId, "messageType", msg.MessageType, "body", msg.Body)
 		return nil
-	})
+	}, 10)
 
 	assert.ErrorContains(t, err, "delete message failed from refreshing client. error", "Error getting message")
 	assert.Equal(t, int64(1), asClient.lastMessageId, "Last message id should be updated")

cmd/githubrunnerscalesetlistener/autoScalerService.go

@@ -5,9 +5,9 @@ import (
 	"encoding/json"
 	"errors"
 	"fmt"
-	"math"
 	"strings"
 
+	"github.com/actions/actions-runner-controller/cmd/githubrunnerscalesetlistener/config"
 	"github.com/actions/actions-runner-controller/github/actions"
 	"github.com/go-logr/logr"
 )
@@ -30,7 +30,7 @@ type Service struct {
 	errs               []error
 }
 
-func WithPrometheusMetrics(conf RunnerScaleSetListenerConfig) func(*Service) {
+func WithPrometheusMetrics(conf config.Config) func(*Service) {
 	return func(svc *Service) {
 		parsedURL, err := actions.ParseGitHubConfigFromURL(conf.ConfigureUrl)
 		if err != nil {
@@ -81,6 +81,7 @@ func NewService(
 }
 
 func (s *Service) Start() error {
+	s.metricsExporter.publishStatic(s.settings.MaxRunners, s.settings.MinRunners)
 	for {
 		s.logger.Info("waiting for message...")
 		select {
@@ -88,7 +89,7 @@ func (s *Service) Start() error {
 			s.logger.Info("service is stopped.")
 			return nil
 		default:
-			err := s.rsClient.GetRunnerScaleSetMessage(s.ctx, s.processMessage)
+			err := s.rsClient.GetRunnerScaleSetMessage(s.ctx, s.processMessage, s.settings.MaxRunners)
 			if err != nil {
 				return fmt.Errorf("could not get and process message. %w", err)
 			}
@@ -204,7 +205,9 @@ func (s *Service) processMessage(message *actions.RunnerScaleSetMessage) error {
 }
 
 func (s *Service) scaleForAssignedJobCount(count int) error {
-	targetRunnerCount := int(math.Max(math.Min(float64(s.settings.MaxRunners), float64(count)), float64(s.settings.MinRunners)))
+	// Max runners should always be set by the resource builder either to the configured value,
+	// or the maximum int32 (resourcebuilder.newAutoScalingListener()).
+	targetRunnerCount := min(s.settings.MinRunners+count, s.settings.MaxRunners)
 	s.metricsExporter.publishDesiredRunners(targetRunnerCount)
 	if targetRunnerCount != s.currentRunnerCount {
 		s.logger.Info("try scale runner request up/down base on assigned job count",

cmd/githubrunnerscalesetlistener/autoScalerService_test.go

@@ -64,7 +64,7 @@ func TestStart(t *testing.T) {
 	)
 	require.NoError(t, err)
 
-	mockRsClient.On("GetRunnerScaleSetMessage", service.ctx, mock.Anything).Run(func(args mock.Arguments) { cancel() }).Return(nil).Once()
+	mockRsClient.On("GetRunnerScaleSetMessage", service.ctx, mock.Anything, mock.Anything).Run(func(mock.Arguments) { cancel() }).Return(nil).Once()
 
 	err = service.Start()
 
@@ -98,7 +98,7 @@ func TestStart_ScaleToMinRunners(t *testing.T) {
 	)
 	require.NoError(t, err)
 
-	mockRsClient.On("GetRunnerScaleSetMessage", ctx, mock.Anything).Run(func(args mock.Arguments) {
+	mockRsClient.On("GetRunnerScaleSetMessage", ctx, mock.Anything, mock.Anything).Run(func(args mock.Arguments) {
 		_ = service.scaleForAssignedJobCount(5)
 	}).Return(nil)
 
@@ -137,7 +137,7 @@ func TestStart_ScaleToMinRunnersFailed(t *testing.T) {
 	require.NoError(t, err)
 
 	c := mockKubeManager.On("ScaleEphemeralRunnerSet", ctx, service.settings.Namespace, service.settings.ResourceName, 5).Return(fmt.Errorf("error")).Once()
-	mockRsClient.On("GetRunnerScaleSetMessage", ctx, mock.Anything).Run(func(args mock.Arguments) {
+	mockRsClient.On("GetRunnerScaleSetMessage", ctx, mock.Anything, mock.Anything).Run(func(args mock.Arguments) {
 		_ = service.scaleForAssignedJobCount(5)
 	}).Return(c.ReturnArguments.Get(0))
 
@@ -172,8 +172,8 @@ func TestStart_GetMultipleMessages(t *testing.T) {
 	)
 	require.NoError(t, err)
 
-	mockRsClient.On("GetRunnerScaleSetMessage", service.ctx, mock.Anything).Return(nil).Times(5)
+	mockRsClient.On("GetRunnerScaleSetMessage", service.ctx, mock.Anything, mock.Anything).Return(nil).Times(5)
-	mockRsClient.On("GetRunnerScaleSetMessage", service.ctx, mock.Anything).Run(func(args mock.Arguments) { cancel() }).Return(nil).Once()
+	mockRsClient.On("GetRunnerScaleSetMessage", service.ctx, mock.Anything, mock.Anything).Run(func(args mock.Arguments) { cancel() }).Return(nil).Once()
 
 	err = service.Start()
 
@@ -207,8 +207,8 @@ func TestStart_ErrorOnMessage(t *testing.T) {
 	)
 	require.NoError(t, err)
 
-	mockRsClient.On("GetRunnerScaleSetMessage", service.ctx, mock.Anything).Return(nil).Times(2)
+	mockRsClient.On("GetRunnerScaleSetMessage", service.ctx, mock.Anything, mock.Anything).Return(nil).Times(2)
-	mockRsClient.On("GetRunnerScaleSetMessage", service.ctx, mock.Anything).Return(fmt.Errorf("error")).Once()
+	mockRsClient.On("GetRunnerScaleSetMessage", service.ctx, mock.Anything, mock.Anything).Return(fmt.Errorf("error")).Once()
 
 	err = service.Start()
 
@@ -397,7 +397,7 @@ func TestProcessMessage_MultipleMessages(t *testing.T) {
 	require.NoError(t, err)
 
 	mockRsClient.On("AcquireJobsForRunnerScaleSet", ctx, mock.MatchedBy(func(ids []int64) bool { return ids[0] == 3 && ids[1] == 4 })).Return(nil).Once()
-	mockKubeManager.On("ScaleEphemeralRunnerSet", ctx, service.settings.Namespace, service.settings.ResourceName, 2).Run(func(args mock.Arguments) { cancel() }).Return(nil).Once()
+	mockKubeManager.On("ScaleEphemeralRunnerSet", ctx, service.settings.Namespace, service.settings.ResourceName, 3).Run(func(args mock.Arguments) { cancel() }).Return(nil).Once()
 
 	err = service.processMessage(&actions.RunnerScaleSetMessage{
 		MessageId:   1,
@@ -523,9 +523,9 @@ func TestScaleForAssignedJobCount_ScaleWithinMinMax(t *testing.T) {
 	require.NoError(t, err)
 
 	mockKubeManager.On("ScaleEphemeralRunnerSet", ctx, service.settings.Namespace, service.settings.ResourceName, 1).Return(nil).Once()
-	mockKubeManager.On("ScaleEphemeralRunnerSet", ctx, service.settings.Namespace, service.settings.ResourceName, 3).Return(nil).Once()
+	mockKubeManager.On("ScaleEphemeralRunnerSet", ctx, service.settings.Namespace, service.settings.ResourceName, 4).Return(nil).Once()
 	mockKubeManager.On("ScaleEphemeralRunnerSet", ctx, service.settings.Namespace, service.settings.ResourceName, 5).Return(nil).Once()
-	mockKubeManager.On("ScaleEphemeralRunnerSet", ctx, service.settings.Namespace, service.settings.ResourceName, 1).Return(nil).Once()
+	mockKubeManager.On("ScaleEphemeralRunnerSet", ctx, service.settings.Namespace, service.settings.ResourceName, 2).Return(nil).Once()
 	mockKubeManager.On("ScaleEphemeralRunnerSet", ctx, service.settings.Namespace, service.settings.ResourceName, 5).Return(nil).Once()
 
 	err = service.scaleForAssignedJobCount(0)
@@ -569,7 +569,7 @@ func TestScaleForAssignedJobCount_ScaleFailed(t *testing.T) {
 	)
 	require.NoError(t, err)
 
-	mockKubeManager.On("ScaleEphemeralRunnerSet", ctx, service.settings.Namespace, service.settings.ResourceName, 2).Return(fmt.Errorf("error"))
+	mockKubeManager.On("ScaleEphemeralRunnerSet", ctx, service.settings.Namespace, service.settings.ResourceName, 3).Return(fmt.Errorf("error"))
 
 	err = service.scaleForAssignedJobCount(2)
 
@@ -605,8 +605,23 @@ func TestProcessMessage_JobStartedMessage(t *testing.T) {
 
 	service.currentRunnerCount = 1
 
-	mockKubeManager.On("UpdateEphemeralRunnerWithJobInfo", ctx, service.settings.Namespace, "runner1", "owner1", "repo1", ".github/workflows/ci.yaml", "job1", int64(100), int64(3)).Run(func(args mock.Arguments) { cancel() }).Return(nil).Once()
+	mockKubeManager.On(
+		"UpdateEphemeralRunnerWithJobInfo",
+		ctx,
+		service.settings.Namespace,
+		"runner1",
+		"owner1",
+		"repo1",
+		".github/workflows/ci.yaml",
+		"job1",
+		int64(100),
+		int64(3),
+	).Run(
+		func(_ mock.Arguments) { cancel() },
+	).Return(nil).Once()
+
 	mockRsClient.On("AcquireJobsForRunnerScaleSet", ctx, mock.MatchedBy(func(ids []int64) bool { return len(ids) == 0 })).Return(nil).Once()
+	mockKubeManager.On("ScaleEphemeralRunnerSet", ctx, service.settings.Namespace, service.settings.ResourceName, 2).Return(nil)
 
 	err = service.processMessage(&actions.RunnerScaleSetMessage{
 		MessageId:   1,

cmd/githubrunnerscalesetlistener/config/config.go

@@ -0,0 +1,76 @@
+package config
+
+import (
+	"encoding/json"
+	"fmt"
+	"os"
+)
+
+type Config struct {
+	ConfigureUrl                string `json:"configureUrl"`
+	AppID                       int64  `json:"appID"`
+	AppInstallationID           int64  `json:"appInstallationID"`
+	AppPrivateKey               string `json:"appPrivateKey"`
+	Token                       string `json:"token"`
+	EphemeralRunnerSetNamespace string `json:"ephemeralRunnerSetNamespace"`
+	EphemeralRunnerSetName      string `json:"ephemeralRunnerSetName"`
+	MaxRunners                  int    `json:"maxRunners"`
+	MinRunners                  int    `json:"minRunners"`
+	RunnerScaleSetId            int    `json:"runnerScaleSetId"`
+	RunnerScaleSetName          string `json:"runnerScaleSetName"`
+	ServerRootCA                string `json:"serverRootCA"`
+	LogLevel                    string `json:"logLevel"`
+	LogFormat                   string `json:"logFormat"`
+	MetricsAddr                 string `json:"metricsAddr"`
+	MetricsEndpoint             string `json:"metricsEndpoint"`
+}
+
+func Read(path string) (Config, error) {
+	f, err := os.Open(path)
+	if err != nil {
+		return Config{}, err
+	}
+	defer f.Close()
+
+	var config Config
+	if err := json.NewDecoder(f).Decode(&config); err != nil {
+		return Config{}, fmt.Errorf("failed to decode config: %w", err)
+	}
+
+	if err := config.validate(); err != nil {
+		return Config{}, fmt.Errorf("failed to validate config: %w", err)
+	}
+
+	return config, nil
+}
+
+func (c *Config) validate() error {
+	if len(c.ConfigureUrl) == 0 {
+		return fmt.Errorf("GitHubConfigUrl is not provided")
+	}
+
+	if len(c.EphemeralRunnerSetNamespace) == 0 || len(c.EphemeralRunnerSetName) == 0 {
+		return fmt.Errorf("EphemeralRunnerSetNamespace '%s' or EphemeralRunnerSetName '%s' is missing", c.EphemeralRunnerSetNamespace, c.EphemeralRunnerSetName)
+	}
+
+	if c.RunnerScaleSetId == 0 {
+		return fmt.Errorf("RunnerScaleSetId '%d' is missing", c.RunnerScaleSetId)
+	}
+
+	if c.MaxRunners < c.MinRunners {
+		return fmt.Errorf("MinRunners '%d' cannot be greater than MaxRunners '%d'", c.MinRunners, c.MaxRunners)
+	}
+
+	hasToken := len(c.Token) > 0
+	hasPrivateKeyConfig := c.AppID > 0 && c.AppPrivateKey != ""
+
+	if !hasToken && !hasPrivateKeyConfig {
+		return fmt.Errorf("GitHub auth credential is missing, token length: '%d', appId: '%d', installationId: '%d', private key length: '%d", len(c.Token), c.AppID, c.AppInstallationID, len(c.AppPrivateKey))
+	}
+
+	if hasToken && hasPrivateKeyConfig {
+		return fmt.Errorf("only one GitHub auth method supported at a time. Have both PAT and App auth: token length: '%d', appId: '%d', installationId: '%d', private key length: '%d", len(c.Token), c.AppID, c.AppInstallationID, len(c.AppPrivateKey))
+	}
+
+	return nil
+}

cmd/githubrunnerscalesetlistener/config/config_test.go

@@ -0,0 +1,92 @@
+package config
+
+import (
+	"fmt"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestConfigValidationMinMax(t *testing.T) {
+	config := &Config{
+		ConfigureUrl:                "github.com/some_org/some_repo",
+		EphemeralRunnerSetNamespace: "namespace",
+		EphemeralRunnerSetName:      "deployment",
+		RunnerScaleSetId:            1,
+		MinRunners:                  5,
+		MaxRunners:                  2,
+		Token:                       "token",
+	}
+	err := config.validate()
+	assert.ErrorContains(t, err, "MinRunners '5' cannot be greater than MaxRunners '2", "Expected error about MinRunners > MaxRunners")
+}
+
+func TestConfigValidationMissingToken(t *testing.T) {
+	config := &Config{
+		ConfigureUrl:                "github.com/some_org/some_repo",
+		EphemeralRunnerSetNamespace: "namespace",
+		EphemeralRunnerSetName:      "deployment",
+		RunnerScaleSetId:            1,
+	}
+	err := config.validate()
+	expectedError := fmt.Sprintf("GitHub auth credential is missing, token length: '%d', appId: '%d', installationId: '%d', private key length: '%d", len(config.Token), config.AppID, config.AppInstallationID, len(config.AppPrivateKey))
+	assert.ErrorContains(t, err, expectedError, "Expected error about missing auth")
+}
+
+func TestConfigValidationAppKey(t *testing.T) {
+	config := &Config{
+		AppID:                       1,
+		AppInstallationID:           10,
+		ConfigureUrl:                "github.com/some_org/some_repo",
+		EphemeralRunnerSetNamespace: "namespace",
+		EphemeralRunnerSetName:      "deployment",
+		RunnerScaleSetId:            1,
+	}
+	err := config.validate()
+	expectedError := fmt.Sprintf("GitHub auth credential is missing, token length: '%d', appId: '%d', installationId: '%d', private key length: '%d", len(config.Token), config.AppID, config.AppInstallationID, len(config.AppPrivateKey))
+	assert.ErrorContains(t, err, expectedError, "Expected error about missing auth")
+}
+
+func TestConfigValidationOnlyOneTypeOfCredentials(t *testing.T) {
+	config := &Config{
+		AppID:                       1,
+		AppInstallationID:           10,
+		AppPrivateKey:               "asdf",
+		Token:                       "asdf",
+		ConfigureUrl:                "github.com/some_org/some_repo",
+		EphemeralRunnerSetNamespace: "namespace",
+		EphemeralRunnerSetName:      "deployment",
+		RunnerScaleSetId:            1,
+	}
+	err := config.validate()
+	expectedError := fmt.Sprintf("only one GitHub auth method supported at a time. Have both PAT and App auth: token length: '%d', appId: '%d', installationId: '%d', private key length: '%d", len(config.Token), config.AppID, config.AppInstallationID, len(config.AppPrivateKey))
+	assert.ErrorContains(t, err, expectedError, "Expected error about missing auth")
+}
+
+func TestConfigValidation(t *testing.T) {
+	config := &Config{
+		ConfigureUrl:                "https://github.com/actions",
+		EphemeralRunnerSetNamespace: "namespace",
+		EphemeralRunnerSetName:      "deployment",
+		RunnerScaleSetId:            1,
+		MinRunners:                  1,
+		MaxRunners:                  5,
+		Token:                       "asdf",
+	}
+
+	err := config.validate()
+
+	assert.NoError(t, err, "Expected no error")
+}
+
+func TestConfigValidationConfigUrl(t *testing.T) {
+	config := &Config{
+		EphemeralRunnerSetNamespace: "namespace",
+		EphemeralRunnerSetName:      "deployment",
+		RunnerScaleSetId:            1,
+	}
+
+	err := config.validate()
+
+	assert.ErrorContains(t, err, "GitHubConfigUrl is not provided", "Expected error about missing ConfigureUrl")
+}

cmd/githubrunnerscalesetlistener/main.go

@@ -28,39 +28,26 @@ import (
 	"time"
 
 	"github.com/actions/actions-runner-controller/build"
+	"github.com/actions/actions-runner-controller/cmd/githubrunnerscalesetlistener/config"
 	"github.com/actions/actions-runner-controller/github/actions"
 	"github.com/actions/actions-runner-controller/logging"
 	"github.com/go-logr/logr"
-	"github.com/kelseyhightower/envconfig"
 	"github.com/prometheus/client_golang/prometheus"
 	"github.com/prometheus/client_golang/prometheus/promhttp"
 	"golang.org/x/net/http/httpproxy"
 	"golang.org/x/sync/errgroup"
 )
 
-type RunnerScaleSetListenerConfig struct {
-	ConfigureUrl                string `split_words:"true"`
-	AppID                       int64  `split_words:"true"`
-	AppInstallationID           int64  `split_words:"true"`
-	AppPrivateKey               string `split_words:"true"`
-	Token                       string `split_words:"true"`
-	EphemeralRunnerSetNamespace string `split_words:"true"`
-	EphemeralRunnerSetName      string `split_words:"true"`
-	MaxRunners                  int    `split_words:"true"`
-	MinRunners                  int    `split_words:"true"`
-	RunnerScaleSetId            int    `split_words:"true"`
-	RunnerScaleSetName          string `split_words:"true"`
-	ServerRootCA                string `split_words:"true"`
-	LogLevel                    string `split_words:"true"`
-	LogFormat                   string `split_words:"true"`
-	MetricsAddr                 string `split_words:"true"`
-	MetricsEndpoint             string `split_words:"true"`
-}
-
 func main() {
-	var rc RunnerScaleSetListenerConfig
+	configPath, ok := os.LookupEnv("LISTENER_CONFIG_PATH")
-	if err := envconfig.Process("github", &rc); err != nil {
+	if !ok {
-		fmt.Fprintf(os.Stderr, "Error: processing environment variables for RunnerScaleSetListenerConfig: %v\n", err)
+		fmt.Fprintf(os.Stderr, "Error: LISTENER_CONFIG_PATH environment variable is not set\n")
+		os.Exit(1)
+	}
+
+	rc, err := config.Read(configPath)
+	if err != nil {
+		fmt.Fprintf(os.Stderr, "Error: reading config from path(%q): %v\n", configPath, err)
 		os.Exit(1)
 	}
 
@@ -80,12 +67,6 @@ func main() {
 		os.Exit(1)
 	}
 
-	// Validate all inputs
-	if err := validateConfig(&rc); err != nil {
-		logger.Error(err, "Inputs validation failed")
-		os.Exit(1)
-	}
-
 	ctx, stop := signal.NotifyContext(context.Background(), syscall.SIGINT, syscall.SIGTERM)
 	defer stop()
 
@@ -123,7 +104,7 @@ func main() {
 }
 
 type metricsServer struct {
-	rc     RunnerScaleSetListenerConfig
+	rc     config.Config
 	logger logr.Logger
 	srv    *http.Server
 }
@@ -173,7 +154,7 @@ type runOptions struct {
 	serviceOptions []func(*Service)
 }
 
-func run(ctx context.Context, rc RunnerScaleSetListenerConfig, logger logr.Logger, opts runOptions) error {
+func run(ctx context.Context, rc config.Config, logger logr.Logger, opts runOptions) error {
 	// Create root context and hook with sigint and sigterm
 	creds := &actions.ActionsAuth{}
 	if rc.Token != "" {
@@ -190,8 +171,14 @@ func run(ctx context.Context, rc RunnerScaleSetListenerConfig, logger logr.Logge
 		rc,
 		creds,
 		actions.WithLogger(logger),
-		actions.WithUserAgent(fmt.Sprintf("actions-runner-controller/%s", build.Version)),
 	)
+	actionsServiceClient.SetUserAgent(actions.UserAgentInfo{
+		Version:    build.Version,
+		CommitSHA:  build.CommitSHA,
+		ScaleSetID: rc.RunnerScaleSetId,
+		HasProxy:   hasProxy(),
+		Subsystem:  "githubrunnerscalesetlistener",
+	})
 	if err != nil {
 		return fmt.Errorf("failed to create an Actions Service client: %w", err)
 	}
@@ -228,38 +215,7 @@ func run(ctx context.Context, rc RunnerScaleSetListenerConfig, logger logr.Logge
 	return nil
 }
 
-func validateConfig(config *RunnerScaleSetListenerConfig) error {
+func newActionsClientFromConfig(config config.Config, creds *actions.ActionsAuth, options ...actions.ClientOption) (*actions.Client, error) {
-	if len(config.ConfigureUrl) == 0 {
-		return fmt.Errorf("GitHubConfigUrl is not provided")
-	}
-
-	if len(config.EphemeralRunnerSetNamespace) == 0 || len(config.EphemeralRunnerSetName) == 0 {
-		return fmt.Errorf("EphemeralRunnerSetNamespace '%s' or EphemeralRunnerSetName '%s' is missing", config.EphemeralRunnerSetNamespace, config.EphemeralRunnerSetName)
-	}
-
-	if config.RunnerScaleSetId == 0 {
-		return fmt.Errorf("RunnerScaleSetId '%d' is missing", config.RunnerScaleSetId)
-	}
-
-	if config.MaxRunners < config.MinRunners {
-		return fmt.Errorf("MinRunners '%d' cannot be greater than MaxRunners '%d'", config.MinRunners, config.MaxRunners)
-	}
-
-	hasToken := len(config.Token) > 0
-	hasPrivateKeyConfig := config.AppID > 0 && config.AppPrivateKey != ""
-
-	if !hasToken && !hasPrivateKeyConfig {
-		return fmt.Errorf("GitHub auth credential is missing, token length: '%d', appId: '%d', installationId: '%d', private key length: '%d", len(config.Token), config.AppID, config.AppInstallationID, len(config.AppPrivateKey))
-	}
-
-	if hasToken && hasPrivateKeyConfig {
-		return fmt.Errorf("only one GitHub auth method supported at a time. Have both PAT and App auth: token length: '%d', appId: '%d', installationId: '%d', private key length: '%d", len(config.Token), config.AppID, config.AppInstallationID, len(config.AppPrivateKey))
-	}
-
-	return nil
-}
-
-func newActionsClientFromConfig(config RunnerScaleSetListenerConfig, creds *actions.ActionsAuth, options ...actions.ClientOption) (*actions.Client, error) {
 	if config.ServerRootCA != "" {
 		systemPool, err := x509.SystemCertPool()
 		if err != nil {
@@ -281,3 +237,8 @@ func newActionsClientFromConfig(config RunnerScaleSetListenerConfig, creds *acti
 
 	return actions.NewClient(config.ConfigureUrl, creds, options...)
 }
+
+func hasProxy() bool {
+	proxyFunc := httpproxy.FromEnvironment().ProxyFunc()
+	return proxyFunc != nil
+}

cmd/githubrunnerscalesetlistener/main_test.go

@@ -3,7 +3,6 @@ package main
 import (
 	"context"
 	"crypto/tls"
-	"fmt"
 	"net/http"
 	"net/http/httptest"
 	"os"
@@ -13,94 +12,11 @@ import (
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
 
+	"github.com/actions/actions-runner-controller/cmd/githubrunnerscalesetlistener/config"
 	"github.com/actions/actions-runner-controller/github/actions"
 	"github.com/actions/actions-runner-controller/github/actions/testserver"
 )
 
-func TestConfigValidationMinMax(t *testing.T) {
-	config := &RunnerScaleSetListenerConfig{
-		ConfigureUrl:                "github.com/some_org/some_repo",
-		EphemeralRunnerSetNamespace: "namespace",
-		EphemeralRunnerSetName:      "deployment",
-		RunnerScaleSetId:            1,
-		MinRunners:                  5,
-		MaxRunners:                  2,
-		Token:                       "token",
-	}
-	err := validateConfig(config)
-	assert.ErrorContains(t, err, "MinRunners '5' cannot be greater than MaxRunners '2", "Expected error about MinRunners > MaxRunners")
-}
-
-func TestConfigValidationMissingToken(t *testing.T) {
-	config := &RunnerScaleSetListenerConfig{
-		ConfigureUrl:                "github.com/some_org/some_repo",
-		EphemeralRunnerSetNamespace: "namespace",
-		EphemeralRunnerSetName:      "deployment",
-		RunnerScaleSetId:            1,
-	}
-	err := validateConfig(config)
-	expectedError := fmt.Sprintf("GitHub auth credential is missing, token length: '%d', appId: '%d', installationId: '%d', private key length: '%d", len(config.Token), config.AppID, config.AppInstallationID, len(config.AppPrivateKey))
-	assert.ErrorContains(t, err, expectedError, "Expected error about missing auth")
-}
-
-func TestConfigValidationAppKey(t *testing.T) {
-	config := &RunnerScaleSetListenerConfig{
-		AppID:                       1,
-		AppInstallationID:           10,
-		ConfigureUrl:                "github.com/some_org/some_repo",
-		EphemeralRunnerSetNamespace: "namespace",
-		EphemeralRunnerSetName:      "deployment",
-		RunnerScaleSetId:            1,
-	}
-	err := validateConfig(config)
-	expectedError := fmt.Sprintf("GitHub auth credential is missing, token length: '%d', appId: '%d', installationId: '%d', private key length: '%d", len(config.Token), config.AppID, config.AppInstallationID, len(config.AppPrivateKey))
-	assert.ErrorContains(t, err, expectedError, "Expected error about missing auth")
-}
-
-func TestConfigValidationOnlyOneTypeOfCredentials(t *testing.T) {
-	config := &RunnerScaleSetListenerConfig{
-		AppID:                       1,
-		AppInstallationID:           10,
-		AppPrivateKey:               "asdf",
-		Token:                       "asdf",
-		ConfigureUrl:                "github.com/some_org/some_repo",
-		EphemeralRunnerSetNamespace: "namespace",
-		EphemeralRunnerSetName:      "deployment",
-		RunnerScaleSetId:            1,
-	}
-	err := validateConfig(config)
-	expectedError := fmt.Sprintf("only one GitHub auth method supported at a time. Have both PAT and App auth: token length: '%d', appId: '%d', installationId: '%d', private key length: '%d", len(config.Token), config.AppID, config.AppInstallationID, len(config.AppPrivateKey))
-	assert.ErrorContains(t, err, expectedError, "Expected error about missing auth")
-}
-
-func TestConfigValidation(t *testing.T) {
-	config := &RunnerScaleSetListenerConfig{
-		ConfigureUrl:                "https://github.com/actions",
-		EphemeralRunnerSetNamespace: "namespace",
-		EphemeralRunnerSetName:      "deployment",
-		RunnerScaleSetId:            1,
-		MinRunners:                  1,
-		MaxRunners:                  5,
-		Token:                       "asdf",
-	}
-
-	err := validateConfig(config)
-
-	assert.NoError(t, err, "Expected no error")
-}
-
-func TestConfigValidationConfigUrl(t *testing.T) {
-	config := &RunnerScaleSetListenerConfig{
-		EphemeralRunnerSetNamespace: "namespace",
-		EphemeralRunnerSetName:      "deployment",
-		RunnerScaleSetId:            1,
-	}
-
-	err := validateConfig(config)
-
-	assert.ErrorContains(t, err, "GitHubConfigUrl is not provided", "Expected error about missing ConfigureUrl")
-}
-
 func TestCustomerServerRootCA(t *testing.T) {
 	ctx := context.Background()
 	certsFolder := filepath.Join(
@@ -134,7 +50,7 @@ func TestCustomerServerRootCA(t *testing.T) {
 	require.NoError(t, err)
 	certsString = certsString + string(intermediate)
 
-	config := RunnerScaleSetListenerConfig{
+	config := config.Config{
 		ConfigureUrl: server.ConfigURLForOrg("myorg"),
 		ServerRootCA: certsString,
 	}
@@ -164,7 +80,7 @@ func TestProxySettings(t *testing.T) {
 		os.Setenv("http_proxy", proxy.URL)
 		defer os.Setenv("http_proxy", prevProxy)
 
-		config := RunnerScaleSetListenerConfig{
+		config := config.Config{
 			ConfigureUrl: "https://github.com/org/repo",
 		}
 		creds := &actions.ActionsAuth{
@@ -196,7 +112,7 @@ func TestProxySettings(t *testing.T) {
 		os.Setenv("https_proxy", proxy.URL)
 		defer os.Setenv("https_proxy", prevProxy)
 
-		config := RunnerScaleSetListenerConfig{
+		config := config.Config{
 			ConfigureUrl: "https://github.com/org/repo",
 		}
 		creds := &actions.ActionsAuth{
@@ -233,7 +149,7 @@ func TestProxySettings(t *testing.T) {
 		os.Setenv("no_proxy", "example.com")
 		defer os.Setenv("no_proxy", prevNoProxy)
 
-		config := RunnerScaleSetListenerConfig{
+		config := config.Config{
 			ConfigureUrl: "https://github.com/org/repo",
 		}
 		creds := &actions.ActionsAuth{

cmd/githubrunnerscalesetlistener/messageListener.go

@@ -8,6 +8,6 @@ import (
 
 //go:generate mockery --inpackage --name=RunnerScaleSetClient
 type RunnerScaleSetClient interface {
-	GetRunnerScaleSetMessage(ctx context.Context, handler func(msg *actions.RunnerScaleSetMessage) error) error
+	GetRunnerScaleSetMessage(ctx context.Context, handler func(msg *actions.RunnerScaleSetMessage) error, maxCapacity int) error
 	AcquireJobsForRunnerScaleSet(ctx context.Context, requestIds []int64) error
 }

cmd/githubrunnerscalesetlistener/metrics.go

@@ -1,8 +1,6 @@
 package main
 
 import (
-	"strconv"
-
 	"github.com/actions/actions-runner-controller/github/actions"
 	"github.com/prometheus/client_golang/prometheus"
 )
@@ -18,8 +16,6 @@ const (
 	labelKeyJobWorkflowRef          = "job_workflow_ref"
 	labelKeyEventName               = "event_name"
 	labelKeyJobResult               = "job_result"
-	labelKeyRunnerID                = "runner_id"
-	labelKeyRunnerName              = "runner_name"
 )
 
 const githubScaleSetSubsystem = "gha"
@@ -43,10 +39,15 @@ var (
 		labelKeyEventName,
 	}
 
-	completedJobsTotalLabels   = append(jobLabels, labelKeyJobResult, labelKeyRunnerID, labelKeyRunnerName)
+	completedJobsTotalLabels   = append(jobLabels, labelKeyJobResult)
-	jobExecutionDurationLabels = append(jobLabels, labelKeyJobResult, labelKeyRunnerID, labelKeyRunnerName)
+	jobExecutionDurationLabels = append(jobLabels, labelKeyJobResult)
-	startedJobsTotalLabels     = append(jobLabels, labelKeyRunnerID, labelKeyRunnerName)
+	startedJobsTotalLabels     = jobLabels
-	jobStartupDurationLabels   = append(jobLabels, labelKeyRunnerID, labelKeyRunnerName)
+	jobStartupDurationLabels   = []string{
+		labelKeyRepository,
+		labelKeyOrganization,
+		labelKeyEnterprise,
+		labelKeyEventName,
+	}
 )
 
 // metrics
@@ -274,23 +275,34 @@ func (b *baseLabels) scaleSetLabels() prometheus.Labels {
 
 func (b *baseLabels) completedJobLabels(msg *actions.JobCompleted) prometheus.Labels {
 	l := b.jobLabels(&msg.JobMessageBase)
-	l[labelKeyRunnerID] = strconv.Itoa(msg.RunnerId)
 	l[labelKeyJobResult] = msg.Result
-	l[labelKeyRunnerName] = msg.RunnerName
 	return l
 }
 
 func (b *baseLabels) startedJobLabels(msg *actions.JobStarted) prometheus.Labels {
 	l := b.jobLabels(&msg.JobMessageBase)
-	l[labelKeyRunnerID] = strconv.Itoa(msg.RunnerId)
-	l[labelKeyRunnerName] = msg.RunnerName
 	return l
 }
 
+func (b *baseLabels) jobStartupDurationLabels(msg *actions.JobStarted) prometheus.Labels {
+	return prometheus.Labels{
+		labelKeyEnterprise:   b.enterprise,
+		labelKeyOrganization: b.organization,
+		labelKeyRepository:   b.repository,
+		labelKeyEventName:    msg.EventName,
+	}
+}
+
 func (m *metricsExporter) withBaseLabels(base baseLabels) {
 	m.baseLabels = base
 }
 
+func (m *metricsExporter) publishStatic(max, min int) {
+	l := m.scaleSetLabels()
+	maxRunners.With(l).Set(float64(max))
+	minRunners.With(l).Set(float64(min))
+}
+
 func (m *metricsExporter) publishStatistics(stats *actions.RunnerScaleSetStatistic) {
 	l := m.scaleSetLabels()
 
@@ -307,6 +319,7 @@ func (m *metricsExporter) publishJobStarted(msg *actions.JobStarted) {
 	l := m.startedJobLabels(msg)
 	startedJobsTotal.With(l).Inc()
 
+	l = m.jobStartupDurationLabels(msg)
 	startupDuration := msg.JobMessageBase.RunnerAssignTime.Unix() - msg.JobMessageBase.ScaleSetAssignTime.Unix()
 	jobStartupDurationSeconds.With(l).Observe(float64(startupDuration))
 }

cmd/githubrunnerscalesetlistener/mock_KubernetesManager.go

@@ -1,4 +1,4 @@
-// Code generated by mockery v2.16.0. DO NOT EDIT.
+// Code generated by mockery v2.36.1. DO NOT EDIT.
 
 package main
 
@@ -41,13 +41,12 @@ func (_m *MockKubernetesManager) UpdateEphemeralRunnerWithJobInfo(ctx context.Co
 	return r0
 }
 
-type mockConstructorTestingTNewMockKubernetesManager interface {
+// NewMockKubernetesManager creates a new instance of MockKubernetesManager. It also registers a testing interface on the mock and a cleanup function to assert the mocks expectations.
+// The first argument is typically a *testing.T value.
+func NewMockKubernetesManager(t interface {
 	mock.TestingT
 	Cleanup(func())
-}
+}) *MockKubernetesManager {
-
-// NewMockKubernetesManager creates a new instance of MockKubernetesManager. It also registers a testing interface on the mock and a cleanup function to assert the mocks expectations.
-func NewMockKubernetesManager(t mockConstructorTestingTNewMockKubernetesManager) *MockKubernetesManager {
 	mock := &MockKubernetesManager{}
 	mock.Mock.Test(t)
 

cmd/githubrunnerscalesetlistener/mock_RunnerScaleSetClient.go

@@ -1,4 +1,4 @@
-// Code generated by mockery v2.16.0. DO NOT EDIT.
+// Code generated by mockery v2.36.1. DO NOT EDIT.
 
 package main
 
@@ -29,13 +29,13 @@ func (_m *MockRunnerScaleSetClient) AcquireJobsForRunnerScaleSet(ctx context.Con
 	return r0
 }
 
-// GetRunnerScaleSetMessage provides a mock function with given fields: ctx, handler
+// GetRunnerScaleSetMessage provides a mock function with given fields: ctx, handler, maxCapacity
-func (_m *MockRunnerScaleSetClient) GetRunnerScaleSetMessage(ctx context.Context, handler func(*actions.RunnerScaleSetMessage) error) error {
+func (_m *MockRunnerScaleSetClient) GetRunnerScaleSetMessage(ctx context.Context, handler func(*actions.RunnerScaleSetMessage) error, maxCapacity int) error {
-	ret := _m.Called(ctx, handler)
+	ret := _m.Called(ctx, handler, maxCapacity)
 
 	var r0 error
-	if rf, ok := ret.Get(0).(func(context.Context, func(*actions.RunnerScaleSetMessage) error) error); ok {
+	if rf, ok := ret.Get(0).(func(context.Context, func(*actions.RunnerScaleSetMessage) error, int) error); ok {
-		r0 = rf(ctx, handler)
+		r0 = rf(ctx, handler, maxCapacity)
 	} else {
 		r0 = ret.Error(0)
 	}
@@ -43,13 +43,12 @@ func (_m *MockRunnerScaleSetClient) GetRunnerScaleSetMessage(ctx context.Context
 	return r0
 }
 
-type mockConstructorTestingTNewMockRunnerScaleSetClient interface {
+// NewMockRunnerScaleSetClient creates a new instance of MockRunnerScaleSetClient. It also registers a testing interface on the mock and a cleanup function to assert the mocks expectations.
+// The first argument is typically a *testing.T value.
+func NewMockRunnerScaleSetClient(t interface {
 	mock.TestingT
 	Cleanup(func())
-}
+}) *MockRunnerScaleSetClient {
-
-// NewMockRunnerScaleSetClient creates a new instance of MockRunnerScaleSetClient. It also registers a testing interface on the mock and a cleanup function to assert the mocks expectations.
-func NewMockRunnerScaleSetClient(t mockConstructorTestingTNewMockRunnerScaleSetClient) *MockRunnerScaleSetClient {
 	mock := &MockRunnerScaleSetClient{}
 	mock.Mock.Test(t)
 

cmd/githubrunnerscalesetlistener/sessionrefreshingclient.go

@@ -24,8 +24,12 @@ func newSessionClient(client actions.ActionsService, logger *logr.Logger, sessio
 	}
 }
 
-func (m *SessionRefreshingClient) GetMessage(ctx context.Context, lastMessageId int64) (*actions.RunnerScaleSetMessage, error) {
+func (m *SessionRefreshingClient) GetMessage(ctx context.Context, lastMessageId int64, maxCapacity int) (*actions.RunnerScaleSetMessage, error) {
-	message, err := m.client.GetMessage(ctx, m.session.MessageQueueUrl, m.session.MessageQueueAccessToken, lastMessageId)
+	if maxCapacity < 0 {
+		return nil, fmt.Errorf("maxCapacity must be greater than or equal to 0")
+	}
+
+	message, err := m.client.GetMessage(ctx, m.session.MessageQueueUrl, m.session.MessageQueueAccessToken, lastMessageId, maxCapacity)
 	if err == nil {
 		return message, nil
 	}
@@ -42,7 +46,7 @@ func (m *SessionRefreshingClient) GetMessage(ctx context.Context, lastMessageId
 	}
 
 	m.session = session
-	message, err = m.client.GetMessage(ctx, m.session.MessageQueueUrl, m.session.MessageQueueAccessToken, lastMessageId)
+	message, err = m.client.GetMessage(ctx, m.session.MessageQueueUrl, m.session.MessageQueueAccessToken, lastMessageId, maxCapacity)
 	if err != nil {
 		return nil, fmt.Errorf("delete message failed after refresh message session. %w", err)
 	}

cmd/githubrunnerscalesetlistener/sessionrefreshingclient_test.go

@@ -31,17 +31,17 @@ func TestGetMessage(t *testing.T) {
 		},
 	}
 
-	mockActionsClient.On("GetMessage", ctx, session.MessageQueueUrl, session.MessageQueueAccessToken, int64(0)).Return(nil, nil).Once()
+	mockActionsClient.On("GetMessage", ctx, session.MessageQueueUrl, session.MessageQueueAccessToken, int64(0), 10).Return(nil, nil).Once()
-	mockActionsClient.On("GetMessage", ctx, session.MessageQueueUrl, session.MessageQueueAccessToken, int64(0)).Return(&actions.RunnerScaleSetMessage{MessageId: 1}, nil).Once()
+	mockActionsClient.On("GetMessage", ctx, session.MessageQueueUrl, session.MessageQueueAccessToken, int64(0), 10).Return(&actions.RunnerScaleSetMessage{MessageId: 1}, nil).Once()
 
 	client := newSessionClient(mockActionsClient, &logger, session)
 
-	msg, err := client.GetMessage(ctx, 0)
+	msg, err := client.GetMessage(ctx, 0, 10)
 	require.NoError(t, err, "GetMessage should not return an error")
 
 	assert.Nil(t, msg, "GetMessage should return nil message")
 
-	msg, err = client.GetMessage(ctx, 0)
+	msg, err = client.GetMessage(ctx, 0, 10)
 	require.NoError(t, err, "GetMessage should not return an error")
 
 	assert.Equal(t, int64(1), msg.MessageId, "GetMessage should return a message with id 1")
@@ -146,11 +146,11 @@ func TestGetMessage_Error(t *testing.T) {
 		},
 	}
 
-	mockActionsClient.On("GetMessage", ctx, session.MessageQueueUrl, session.MessageQueueAccessToken, int64(0)).Return(nil, fmt.Errorf("error")).Once()
+	mockActionsClient.On("GetMessage", ctx, session.MessageQueueUrl, session.MessageQueueAccessToken, int64(0), 10).Return(nil, fmt.Errorf("error")).Once()
 
 	client := newSessionClient(mockActionsClient, &logger, session)
 
-	msg, err := client.GetMessage(ctx, 0)
+	msg, err := client.GetMessage(ctx, 0, 10)
 	assert.ErrorContains(t, err, "get message failed. error", "GetMessage should return an error")
 	assert.Nil(t, msg, "GetMessage should return nil message")
 	assert.True(t, mockActionsClient.AssertExpectations(t), "All expected calls to mockActionsClient should have been made")
@@ -227,8 +227,8 @@ func TestGetMessage_RefreshToken(t *testing.T) {
 			Id: 1,
 		},
 	}
-	mockActionsClient.On("GetMessage", ctx, session.MessageQueueUrl, session.MessageQueueAccessToken, int64(0)).Return(nil, &actions.MessageQueueTokenExpiredError{}).Once()
+	mockActionsClient.On("GetMessage", ctx, session.MessageQueueUrl, session.MessageQueueAccessToken, int64(0), 10).Return(nil, &actions.MessageQueueTokenExpiredError{}).Once()
-	mockActionsClient.On("GetMessage", ctx, session.MessageQueueUrl, "token2", int64(0)).Return(&actions.RunnerScaleSetMessage{
+	mockActionsClient.On("GetMessage", ctx, session.MessageQueueUrl, "token2", int64(0), 10).Return(&actions.RunnerScaleSetMessage{
 		MessageId:   1,
 		MessageType: "test",
 		Body:        "test",
@@ -243,7 +243,7 @@ func TestGetMessage_RefreshToken(t *testing.T) {
 	}, nil).Once()
 
 	client := newSessionClient(mockActionsClient, &logger, session)
-	msg, err := client.GetMessage(ctx, 0)
+	msg, err := client.GetMessage(ctx, 0, 10)
 	assert.NoError(t, err, "Error getting message")
 	assert.Equal(t, int64(1), msg.MessageId, "message id should be updated")
 	assert.Equal(t, "token2", client.session.MessageQueueAccessToken, "Message queue access token should be updated")
@@ -340,11 +340,11 @@ func TestGetMessage_RefreshToken_Failed(t *testing.T) {
 			Id: 1,
 		},
 	}
-	mockActionsClient.On("GetMessage", ctx, session.MessageQueueUrl, session.MessageQueueAccessToken, int64(0)).Return(nil, &actions.MessageQueueTokenExpiredError{}).Once()
+	mockActionsClient.On("GetMessage", ctx, session.MessageQueueUrl, session.MessageQueueAccessToken, int64(0), 10).Return(nil, &actions.MessageQueueTokenExpiredError{}).Once()
 	mockActionsClient.On("RefreshMessageSession", ctx, session.RunnerScaleSet.Id, session.SessionId).Return(nil, fmt.Errorf("error"))
 
 	client := newSessionClient(mockActionsClient, &logger, session)
-	msg, err := client.GetMessage(ctx, 0)
+	msg, err := client.GetMessage(ctx, 0, 10)
 	assert.ErrorContains(t, err, "refresh message session failed. error", "Error should be returned")
 	assert.Nil(t, msg, "Message should be nil")
 	assert.Equal(t, "token", client.session.MessageQueueAccessToken, "Message queue access token should not be updated")

cmd/githubwebhookserver/main.go

@@ -39,6 +39,9 @@ import (
 	_ "k8s.io/client-go/plugin/pkg/client/auth/gcp"
 	_ "k8s.io/client-go/plugin/pkg/client/auth/oidc"
 	ctrl "sigs.k8s.io/controller-runtime"
+	"sigs.k8s.io/controller-runtime/pkg/cache"
+	metricsserver "sigs.k8s.io/controller-runtime/pkg/metrics/server"
+	"sigs.k8s.io/controller-runtime/pkg/webhook"
 	// +kubebuilder:scaffold:imports
 )
 
@@ -149,11 +152,19 @@ func main() {
 
 	syncPeriod := 10 * time.Minute
 	mgr, err := ctrl.NewManager(ctrl.GetConfigOrDie(), ctrl.Options{
-		Scheme:             scheme,
+		Scheme: scheme,
-		SyncPeriod:         &syncPeriod,
+		Cache: cache.Options{
-		Namespace:          watchNamespace,
+			SyncPeriod: &syncPeriod,
-		MetricsBindAddress: metricsAddr,
+			DefaultNamespaces: map[string]cache.Config{
-		Port:               9443,
+				watchNamespace: {},
+			},
+		},
+		Metrics: metricsserver.Options{
+			BindAddress: metricsAddr,
+		},
+		WebhookServer: webhook.NewServer(webhook.Options{
+			Port: 9443,
+		}),
 	})
 	if err != nil {
 		logger.Error(err, "unable to start manager")

config/crd/bases/actions.summerwind.dev_horizontalrunnerautoscalers.yaml

@@ -1,9 +1,9 @@
+---
 apiVersion: apiextensions.k8s.io/v1
 kind: CustomResourceDefinition
 metadata:
   annotations:
-    controller-gen.kubebuilder.io/version: v0.7.0
+    controller-gen.kubebuilder.io/version: v0.14.0
-  creationTimestamp: null
   name: horizontalrunnerautoscalers.actions.summerwind.dev
 spec:
   group: actions.summerwind.dev
@@ -35,10 +35,19 @@ spec:
           description: HorizontalRunnerAutoscaler is the Schema for the horizontalrunnerautoscaler API
           properties:
             apiVersion:
-              description: 'APIVersion defines the versioned schema of this representation of an object. Servers should convert recognized schemas to the latest internal value, and may reject unrecognized values. More info: https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#resources'
+              description: |-
+                APIVersion defines the versioned schema of this representation of an object.
+                Servers should convert recognized schemas to the latest internal value, and
+                may reject unrecognized values.
+                More info: https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#resources
               type: string
             kind:
-              description: 'Kind is a string value representing the REST resource this object represents. Servers may infer this from the endpoint the client submits requests to. Cannot be updated. In CamelCase. More info: https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#types-kinds'
+              description: |-
+                Kind is a string value representing the REST resource this object represents.
+                Servers may infer this from the endpoint the client submits requests to.
+                Cannot be updated.
+                In CamelCase.
+                More info: https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#types-kinds
               type: string
             metadata:
               type: object
@@ -47,7 +56,9 @@ spec:
               properties:
                 capacityReservations:
                   items:
-                    description: CapacityReservation specifies the number of replicas temporarily added to the scale target until ExpirationTime.
+                    description: |-
+                      CapacityReservation specifies the number of replicas temporarily added
+                      to the scale target until ExpirationTime.
                     properties:
                       effectiveTime:
                         format: date-time
@@ -79,30 +90,46 @@ spec:
                   items:
                     properties:
                       repositoryNames:
-                        description: RepositoryNames is the list of repository names to be used for calculating the metric. For example, a repository name is the REPO part of `github.com/USER/REPO`.
+                        description: |-
+                          RepositoryNames is the list of repository names to be used for calculating the metric.
+                          For example, a repository name is the REPO part of `github.com/USER/REPO`.
                         items:
                           type: string
                         type: array
                       scaleDownAdjustment:
-                        description: ScaleDownAdjustment is the number of runners removed on scale-down. You can only specify either ScaleDownFactor or ScaleDownAdjustment.
+                        description: |-
+                          ScaleDownAdjustment is the number of runners removed on scale-down.
+                          You can only specify either ScaleDownFactor or ScaleDownAdjustment.
                         type: integer
                       scaleDownFactor:
-                        description: ScaleDownFactor is the multiplicative factor applied to the current number of runners used to determine how many pods should be removed.
+                        description: |-
+                          ScaleDownFactor is the multiplicative factor applied to the current number of runners used
+                          to determine how many pods should be removed.
                         type: string
                       scaleDownThreshold:
-                        description: ScaleDownThreshold is the percentage of busy runners less than which will trigger the hpa to scale the runners down.
+                        description: |-
+                          ScaleDownThreshold is the percentage of busy runners less than which will
+                          trigger the hpa to scale the runners down.
                         type: string
                       scaleUpAdjustment:
-                        description: ScaleUpAdjustment is the number of runners added on scale-up. You can only specify either ScaleUpFactor or ScaleUpAdjustment.
+                        description: |-
+                          ScaleUpAdjustment is the number of runners added on scale-up.
+                          You can only specify either ScaleUpFactor or ScaleUpAdjustment.
                         type: integer
                       scaleUpFactor:
-                        description: ScaleUpFactor is the multiplicative factor applied to the current number of runners used to determine how many pods should be added.
+                        description: |-
+                          ScaleUpFactor is the multiplicative factor applied to the current number of runners used
+                          to determine how many pods should be added.
                         type: string
                       scaleUpThreshold:
-                        description: ScaleUpThreshold is the percentage of busy runners greater than which will trigger the hpa to scale runners up.
+                        description: |-
+                          ScaleUpThreshold is the percentage of busy runners greater than which will
+                          trigger the hpa to scale runners up.
                         type: string
                       type:
-                        description: Type is the type of metric to be used for autoscaling. It can be TotalNumberOfQueuedAndInProgressWorkflowRuns or PercentageRunnersBusy.
+                        description: |-
+                          Type is the type of metric to be used for autoscaling.
+                          It can be TotalNumberOfQueuedAndInProgressWorkflowRuns or PercentageRunnersBusy.
                         type: string
                     type: object
                   type: array
@@ -110,7 +137,9 @@ spec:
                   description: MinReplicas is the minimum number of replicas the deployment is allowed to scale
                   type: integer
                 scaleDownDelaySecondsAfterScaleOut:
-                  description: ScaleDownDelaySecondsAfterScaleUp is the approximate delay for a scale down followed by a scale up Used to prevent flapping (down->up->down->... loop)
+                  description: |-
+                    ScaleDownDelaySecondsAfterScaleUp is the approximate delay for a scale down followed by a scale up
+                    Used to prevent flapping (down->up->down->... loop)
                   type: integer
                 scaleTargetRef:
                   description: ScaleTargetRef is the reference to scaled resource like RunnerDeployment
@@ -126,7 +155,18 @@ spec:
                       type: string
                   type: object
                 scaleUpTriggers:
-                  description: "ScaleUpTriggers is an experimental feature to increase the desired replicas by 1 on each webhook requested received by the webhookBasedAutoscaler. \n This feature requires you to also enable and deploy the webhookBasedAutoscaler onto your cluster. \n Note that the added runners remain until the next sync period at least, and they may or may not be used by GitHub Actions depending on the timing. They are intended to be used to gain \"resource slack\" immediately after you receive a webhook from GitHub, so that you can loosely expect MinReplicas runners to be always available."
+                  description: |-
+                    ScaleUpTriggers is an experimental feature to increase the desired replicas by 1
+                    on each webhook requested received by the webhookBasedAutoscaler.
+
+
+                    This feature requires you to also enable and deploy the webhookBasedAutoscaler onto your cluster.
+
+
+                    Note that the added runners remain until the next sync period at least,
+                    and they may or may not be used by GitHub Actions depending on the timing.
+                    They are intended to be used to gain "resource slack" immediately after you
+                    receive a webhook from GitHub, so that you can loosely expect MinReplicas runners to be always available.
                   items:
                     properties:
                       amount:
@@ -139,12 +179,18 @@ spec:
                             description: https://docs.github.com/en/actions/reference/events-that-trigger-workflows#check_run
                             properties:
                               names:
-                                description: Names is a list of GitHub Actions glob patterns. Any check_run event whose name matches one of patterns in the list can trigger autoscaling. Note that check_run name seem to equal to the job name you've defined in your actions workflow yaml file. So it is very likely that you can utilize this to trigger depending on the job.
+                                description: |-
+                                  Names is a list of GitHub Actions glob patterns.
+                                  Any check_run event whose name matches one of patterns in the list can trigger autoscaling.
+                                  Note that check_run name seem to equal to the job name you've defined in your actions workflow yaml file.
+                                  So it is very likely that you can utilize this to trigger depending on the job.
                                 items:
                                   type: string
                                 type: array
                               repositories:
-                                description: Repositories is a list of GitHub repositories. Any check_run event whose repository matches one of repositories in the list can trigger autoscaling.
+                                description: |-
+                                  Repositories is a list of GitHub repositories.
+                                  Any check_run event whose repository matches one of repositories in the list can trigger autoscaling.
                                 items:
                                   type: string
                                 type: array
@@ -169,7 +215,9 @@ spec:
                                 type: array
                             type: object
                           push:
-                            description: PushSpec is the condition for triggering scale-up on push event Also see https://docs.github.com/en/actions/reference/events-that-trigger-workflows#push
+                            description: |-
+                              PushSpec is the condition for triggering scale-up on push event
+                              Also see https://docs.github.com/en/actions/reference/events-that-trigger-workflows#push
                             type: object
                           workflowJob:
                             description: https://docs.github.com/en/developers/webhooks-and-events/webhooks/webhook-events-and-payloads#workflow_job
@@ -178,23 +226,33 @@ spec:
                     type: object
                   type: array
                 scheduledOverrides:
-                  description: ScheduledOverrides is the list of ScheduledOverride. It can be used to override a few fields of HorizontalRunnerAutoscalerSpec on schedule. The earlier a scheduled override is, the higher it is prioritized.
+                  description: |-
+                    ScheduledOverrides is the list of ScheduledOverride.
+                    It can be used to override a few fields of HorizontalRunnerAutoscalerSpec on schedule.
+                    The earlier a scheduled override is, the higher it is prioritized.
                   items:
-                    description: ScheduledOverride can be used to override a few fields of HorizontalRunnerAutoscalerSpec on schedule. A schedule can optionally be recurring, so that the corresponding override happens every day, week, month, or year.
+                    description: |-
+                      ScheduledOverride can be used to override a few fields of HorizontalRunnerAutoscalerSpec on schedule.
+                      A schedule can optionally be recurring, so that the corresponding override happens every day, week, month, or year.
                     properties:
                       endTime:
                         description: EndTime is the time at which the first override ends.
                         format: date-time
                         type: string
                       minReplicas:
-                        description: MinReplicas is the number of runners while overriding. If omitted, it doesn't override minReplicas.
+                        description: |-
+                          MinReplicas is the number of runners while overriding.
+                          If omitted, it doesn't override minReplicas.
                         minimum: 0
                         nullable: true
                         type: integer
                       recurrenceRule:
                         properties:
                           frequency:
-                            description: Frequency is the name of a predefined interval of each recurrence. The valid values are "Daily", "Weekly", "Monthly", and "Yearly". If empty, the corresponding override happens only once.
+                            description: |-
+                              Frequency is the name of a predefined interval of each recurrence.
+                              The valid values are "Daily", "Weekly", "Monthly", and "Yearly".
+                              If empty, the corresponding override happens only once.
                             enum:
                               - Daily
                               - Weekly
@@ -202,7 +260,9 @@ spec:
                               - Yearly
                             type: string
                           untilTime:
-                            description: UntilTime is the time of the final recurrence. If empty, the schedule recurs forever.
+                            description: |-
+                              UntilTime is the time of the final recurrence.
+                              If empty, the schedule recurs forever.
                             format: date-time
                             type: string
                         type: object
@@ -231,18 +291,24 @@ spec:
                     type: object
                   type: array
                 desiredReplicas:
-                  description: DesiredReplicas is the total number of desired, non-terminated and latest pods to be set for the primary RunnerSet This doesn't include outdated pods while upgrading the deployment and replacing the runnerset.
+                  description: |-
+                    DesiredReplicas is the total number of desired, non-terminated and latest pods to be set for the primary RunnerSet
+                    This doesn't include outdated pods while upgrading the deployment and replacing the runnerset.
                   type: integer
                 lastSuccessfulScaleOutTime:
                   format: date-time
                   nullable: true
                   type: string
                 observedGeneration:
-                  description: ObservedGeneration is the most recent generation observed for the target. It corresponds to e.g. RunnerDeployment's generation, which is updated on mutation by the API Server.
+                  description: |-
+                    ObservedGeneration is the most recent generation observed for the target. It corresponds to e.g.
+                    RunnerDeployment's generation, which is updated on mutation by the API Server.
                   format: int64
                   type: integer
                 scheduledOverridesSummary:
-                  description: ScheduledOverridesSummary is the summary of active and upcoming scheduled overrides to be shown in e.g. a column of a `kubectl get hra` output for observability.
+                  description: |-
+                    ScheduledOverridesSummary is the summary of active and upcoming scheduled overrides to be shown in e.g. a column of a `kubectl get hra` output
+                    for observability.
                   type: string
               type: object
           type: object
@@ -251,9 +317,3 @@ spec:
       subresources:
         status: {}
   preserveUnknownFields: false
-status:
-  acceptedNames:
-    kind: ""
-    plural: ""
-  conditions: []
-  storedVersions: []