Allow public SecretMasker constructor to be called with a null IEnumerable<ValueEncoder>

* Also send Steps update to Results service

* Refactor to separate results server from current job server

* If hit any error while uploading to Results, skip Results upload

* Add proxy authentication and buffer request for WinHttpHandler

* Remove unnecessary null guard

* Also send Results telemetry when step update fails

* IResultsServer is not disposable

.devcontainer/devcontainer.json

@@ -5,7 +5,10 @@
 	"features": {
 		"ghcr.io/devcontainers/features/docker-in-docker:1": {},
 		"ghcr.io/devcontainers/features/dotnet": {
-			"version": "6.0.300"
+			"version": "6.0.405"
+		},
+		"ghcr.io/devcontainers/features/node:1": {
+			"version": "16"
 		}
 	},
 	"customizations": {

.github/ISSUE_TEMPLATE/config.yml

@@ -1,5 +1,8 @@
 blank_issues_enabled: false
 contact_links:
+  - name: 🛑 Request a feature in the runner application
+    url: https://github.com/orgs/community/discussions/categories/actions-and-packages
+    about: If you have feature requests for GitHub Actions, please use the Actions and Packages section on the Github Product Feedback page.
   - name: ✅ Support for GitHub Actions
     url: https://github.community/c/code-to-cloud/52
     about: If you have questions about GitHub Actions or need support writing workflows, please ask in the GitHub Community Support forum.

.github/ISSUE_TEMPLATE/enhancement_request.md

@@ -1,32 +0,0 @@
----
-name: 🛑 Request a feature in the runner application 
-about: If you have feature requests for GitHub Actions, please use the "feedback and suggestions for GitHub Actions" link below.
-title: ''
-labels: enhancement
-assignees: ''
-
----
-
-<!--
-👋 You're opening a request for an enhancement in the GitHub Actions **runner application**.
-
-🛑 Please stop if you're not certain that the feature you want is in the runner application - if you have a suggestion for improving GitHub Actions, please see the [GitHub Actions Feedback](https://github.com/github/feedback/discussions/categories/actions-and-packages-feedback) discussion forum which is actively monitored.  Using the forum ensures that we route your problem to the correct team.  😃
-
-Some additional useful links:
-* If you have found a security issue [please submit it here](https://hackerone.com/github)
-* If you have questions or issues with the service, writing workflows or actions, then please [visit the GitHub Community Forum's Actions Board](https://github.community/t5/GitHub-Actions/bd-p/actions)
-* If you are having an issue or have a question about GitHub Actions then please [contact customer support](https://help.github.com/en/actions/automating-your-workflow-with-github-actions/about-github-actions#contacting-support)
-
-If you have a feature request that is relevant to this repository, the runner, then please include the information below:
--->
-
-**Describe the enhancement**
-A clear and concise description of what the features or enhancement you need.
-
-**Code Snippet**
-If applicable, add a code snippet.
-
-**Additional information**
-Add any other context about the feature here.
-
-NOTE: if the feature request has been agreed upon then the assignee will create an ADR.   See docs/adrs/README.md

.github/workflows/codeql.yml

@@ -27,7 +27,7 @@ jobs:
 
     # Initializes the CodeQL tools for scanning.
     - name: Initialize CodeQL
-      uses: github/codeql-action/init@v1
+      uses: github/codeql-action/init@v2
       # Override language selection by uncommenting this and choosing your languages
       # with:
       #   languages: go, javascript, csharp, python, cpp, java
@@ -38,4 +38,4 @@ jobs:
       working-directory: src
 
     - name: Perform CodeQL Analysis
-      uses: github/codeql-action/analyze@v1
+      uses: github/codeql-action/analyze@v2

.github/workflows/lint.yml

@@ -18,7 +18,6 @@ jobs:
         uses: github/super-linter@v4
         env:
           DEFAULT_BRANCH: ${{ github.base_ref }}
-          DISABLE_ERRORS: true
           EDITORCONFIG_FILE_NAME: .editorconfig
           LINTER_RULES_PATH: /src/
           VALIDATE_ALL_CODEBASE: false

.github/workflows/release.yml

@@ -131,7 +131,7 @@ jobs:
         file=$(ls)
         sha=$(sha256sum $file | awk '{ print $1 }')
         echo "Computed sha256: $sha for $file"
-        echo "::set-output name=${{matrix.runtime}}-sha256::$sha"
+        echo "${{matrix.runtime}}-sha256=$sha" >> $GITHUB_OUTPUT
       shell: bash
       id: sha
       name: Compute SHA256
@@ -140,8 +140,8 @@ jobs:
         file=$(ls)
         sha=$(sha256sum $file | awk '{ print $1 }')
         echo "Computed sha256: $sha for $file"
-        echo "::set-output name=${{matrix.runtime}}-sha256::$sha"
-        echo "::set-output name=sha256::$sha"
+        echo "${{matrix.runtime}}-sha256=$sha" >> $GITHUB_OUTPUT
+        echo "sha256=$sha" >> $GITHUB_OUTPUT
       shell: bash
       id: sha_noexternals
       name: Compute SHA256
@@ -150,8 +150,8 @@ jobs:
         file=$(ls)
         sha=$(sha256sum $file | awk '{ print $1 }')
         echo "Computed sha256: $sha for $file"
-        echo "::set-output name=${{matrix.runtime}}-sha256::$sha"
-        echo "::set-output name=sha256::$sha"
+        echo "${{matrix.runtime}}-sha256=$sha" >> $GITHUB_OUTPUT
+        echo "sha256=$sha" >> $GITHUB_OUTPUT
       shell: bash
       id: sha_noruntime
       name: Compute SHA256
@@ -160,8 +160,8 @@ jobs:
         file=$(ls)
         sha=$(sha256sum $file | awk '{ print $1 }')
         echo "Computed sha256: $sha for $file"
-        echo "::set-output name=${{matrix.runtime}}-sha256::$sha"
-        echo "::set-output name=sha256::$sha"
+        echo "${{matrix.runtime}}-sha256=$sha" >> $GITHUB_OUTPUT
+        echo "sha256=$sha" >> $GITHUB_OUTPUT
       shell: bash
       id: sha_noruntime_noexternals
       name: Compute SHA256

docs/adrs/2494-runner-image-tags.md

@@ -0,0 +1,65 @@
+# ADR 2494: Runner Image Tags
+
+**Date**: 2023-03-17
+
+**Status**: Accepted<!-- |Accepted|Rejected|Superceded|Deprecated -->
+
+## Context
+
+Following the [adoption of actions-runner-controller by GitHub](https://github.com/actions/actions-runner-controller/discussions/2072) and the introduction of the new runner scale set autoscaling mode, we needed to provide a basic runner image that could be used off the shelf without much friction.
+
+The [current runner image](https://github.com/actions/runner/pkgs/container/actions-runner) is published to GHCR. Each release of this image is tagged with the runner version and the most recent release is also tagged with `latest`.
+
+While the use of `latest` is common practice, we recommend that users pin a specific version of the runner image for a predictable runtime and improved security posture. However, we still notice that a large number of end users are relying on the `latest` tag & raising issues when they encounter problems.
+
+Add to that, the community actions-runner-controller maintainers have issued a [deprecation notice](https://github.com/actions/actions-runner-controller/issues/2056) of the `latest` tag for the existing runner images (https://github.com/orgs/actions-runner-controller/packages).
+
+## Decision
+
+Proceed with Option 2, keeping the `latest` tag and adding the `NOTES.txt` file to our helm charts with the notice.
+
+### Option 1: Remove the `latest` tag
+
+By removing the `latest` tag, we have to proceed with either of these options:
+
+1. Remove the runner image reference in the `values.yaml` provided with the `gha-runner-scale-set` helm chart and mark these fields as required so that users have to explicitly specify a runner image and a specific tag. This will obviously introduce more  friction for users who want to start using actions-runner-controller for the first time.
+
+```yaml
+  spec:
+    containers:
+    - name: runner
+      image: ""
+      tag: ""
+      command: ["/home/runner/run.sh"]
+```
+
+1. Pin a specific runner image tag in the `values.yaml` provided with the `gha-runner-scale-set` helm chart. This will reduce friction for users who want to start using actions-runner-controller for the first time but will require us to update the `values.yaml` with every new runner release.
+
+```yaml
+  spec:
+    containers:
+    - name: runner
+      image: "ghcr.io/actions/actions-runner"
+      tag: "v2.300.0"
+      command: ["/home/runner/run.sh"]
+```
+
+### Option 2: Keep the `latest` tag
+
+Keeping the `latest` tag is also a reasonable option especially if we don't expect to make any breaking changes to the runner image. We could enhance this by adding a [NOTES.txt](https://helm.sh/docs/chart_template_guide/notes_files/) to the helm chart which will be displayed to the user after a successful helm install/upgrade. This will help users understand the implications of using the `latest` tag and how to pin a specific version of the runner image.
+
+The runner image release workflow will need to be updated so that the image is pushed to GHCR and tagged only when the runner rollout has reached all scale units.
+
+## Consequences
+
+Proceeding with **option 1** means:
+
+1. We will enhance the runtime predictability and security posture of our end users
+1. We will have to update the `values.yaml` with every new runner release (that can be automated)
+1. We will introduce friction for users who want to start using actions-runner-controller for the first time
+
+Proceeding with **option 2** means:
+
+1. We will have to continue to maintain the `latest` tag
+1. We will assume that end users will be able to handle the implications of using the `latest` tag
+1. Runner image release workflow needs to be updated 

docs/contribute.md

@@ -158,3 +158,11 @@ cat (Runner/Worker)_TIMESTAMP.log # view your log file
 
 We use the .NET Foundation and CoreCLR style guidelines [located here](
 https://github.com/dotnet/corefx/blob/master/Documentation/coding-guidelines/coding-style.md)
+
+### Format C# Code
+
+To format both staged and unstaged .cs files
+```
+cd ./src
+./dev.(cmd|sh) format
+```

docs/contribute/vscode.md

@@ -35,7 +35,7 @@ All the configs below can be found in `.vscode/launch.json`.
 If you launch `Run` or `Run [build]`, it starts a process called `Runner.Listener`.
 This process will receive any job queued on this repository if the job runs on matching labels (e.g `runs-on: self-hosted`).
 Once a job is received, a `Runner.Listener` starts a new process of `Runner.Worker`.
-Since this is a diferent process, you can't use the same debugger session debug it.
+Since this is a different process, you can't use the same debugger session debug it.
 Instead, a parallel debugging session has to be started, using a different launch config.
 Luckily, VS Code supports multiple parallel debugging sessions.
 

images/Dockerfile

@@ -2,7 +2,8 @@ FROM mcr.microsoft.com/dotnet/runtime-deps:6.0 as build
 
 ARG RUNNER_VERSION
 ARG RUNNER_ARCH="x64"
-ARG RUNNER_CONTAINER_HOOKS_VERSION=0.1.3
+ARG RUNNER_CONTAINER_HOOKS_VERSION=0.3.1
+ARG DOCKER_VERSION=20.10.23
 
 RUN apt update -y && apt install curl unzip -y
 
@@ -15,10 +16,34 @@ RUN curl -f -L -o runner-container-hooks.zip https://github.com/actions/runner-c
     && unzip ./runner-container-hooks.zip -d ./k8s \
     && rm runner-container-hooks.zip
 
+RUN export DOCKER_ARCH=x86_64 \
+    && if [ "$RUNNER_ARCH" = "arm64" ]; then export DOCKER_ARCH=aarch64 ; fi \
+    && curl -fLo docker.tgz https://download.docker.com/linux/static/stable/${DOCKER_ARCH}/docker-${DOCKER_VERSION}.tgz \
+    && tar zxvf docker.tgz \
+    && rm -rf docker.tgz
+
 FROM mcr.microsoft.com/dotnet/runtime-deps:6.0
 
-ENV RUNNER_ALLOW_RUNASROOT=1
+ENV DEBIAN_FRONTEND=noninteractive
 ENV RUNNER_MANUALLY_TRAP_SIG=1
+ENV ACTIONS_RUNNER_PRINT_LOG_TO_STDOUT=1
 
-WORKDIR /actions-runner
-COPY --from=build /actions-runner .
+RUN apt-get update -y \
+    && apt-get install -y --no-install-recommends \
+    sudo \
+    && rm -rf /var/lib/apt/lists/*
+
+RUN adduser --disabled-password --gecos "" --uid 1001 runner \
+    && groupadd docker --gid 123 \
+    && usermod -aG sudo runner \
+    && usermod -aG docker runner \
+    && echo "%sudo   ALL=(ALL:ALL) NOPASSWD:ALL" > /etc/sudoers \
+    && echo "Defaults env_keep += \"DEBIAN_FRONTEND\"" >> /etc/sudoers
+
+WORKDIR /home/runner
+
+COPY --chown=runner:docker --from=build /actions-runner .
+
+RUN install -o root -g root -m 755 docker/* /usr/bin/ && rm -rf docker
+
+USER runner

releaseNote.md

@@ -1,17 +1,21 @@
 ## Features
-- Expose github.actor_id, github.workflow_ref & github.workflow_sha as environment variable (#2249)
-- Added worker and listener logs to stdout (#2291, #2307)
+- Support matrix context in output keys (#2477)
+- Add update certificates to `./run.sh` if `RUNNER_UPDATE_CA_CERTS` env is set (#2471)
+- Bypass all proxies for all hosts if `no_proxy='*'` is set (#2395)
+- Change runner image to make user/folder align with `ubuntu-latest` hosted runner. (#2469)
 
 ## Bugs
-- Made github.action_status output lowercase to be consistent with job.status' output (#1944)
+- Exit on runner version deprecation error (#2299)
+- Runner service exit after consecutive re-try exits (#2426)
 
 ## Misc
-- Added small size runner image for ARC (#2250)
-- Small change to Node.js 12 deprecation message (#2262)
-- Added the option to use the --replace argument to the create-latest-svc.sh (#2273)
-- Made runner_name optional defaulting to hostname in delete.sh script (#1871)
-- Return exit code when MANUALLY_TRAP_SIG is exported (#2285)
-- Use results for uploading step summaries (#2301)
+- Replace deprecated command with environment file (#2429)
+- Make requests to `Run` service to renew job request (#2461)
+- Add job/step log upload to Result service (#2447, #2439)
+
+_Note: Actions Runner follows a progressive release policy, so the latest release might not be available to your enterprise, organization, or repository yet. 
+To confirm which version of the Actions Runner you should expect, please view the download instructions for your enterprise, organization, or repository. 
+See https://docs.github.com/en/enterprise-cloud@latest/actions/hosting-your-own-runners/adding-self-hosted-runners_
 
 ## Windows x64
 We recommend configuring the runner in a root folder of the Windows drive (e.g. "C:\actions-runner"). This will help avoid issues related to service identity folder permissions and long file path restrictions on Windows.

src/Misc/contentHash/dotnetRuntime/linux-arm

@@ -1 +1 @@
-1d709d93e5d3c6c6c656a61aa6c1781050224788a05b0e6ecc4c3c0408bdf89c
+39f2a931565d6a10e695ac8ed14bb9dcbb568151410349b32dbf9c27bae29602

src/Misc/contentHash/dotnetRuntime/linux-arm64

@@ -1 +1 @@
-b92a47cfeaad02255b1f7a377060651b73ae5e5db22a188dbbcb4183ab03a03d
+29ffb303537d8ba674fbebc7729292c21c4ebd17b3198f91ed593ef4cbbb67b5

src/Misc/contentHash/dotnetRuntime/linux-x64

@@ -1 +1 @@
-68a9a8ef0843a8bb74241894f6f63fd76241a82295c5337d3cc7a940a314c78e
+de6868a836fa3cb9e5ddddbc079da1c25e819aa2d2fc193cc9931c353687c57c

src/Misc/contentHash/dotnetRuntime/osx-arm64

@@ -1 +1 @@
-02c7126ff4d63ee2a0ae390c81434c125630522aadf35903bbeebb1a99d8af99
+339d3e1a5fd28450c0fe6cb820cc7aae291f0f9e2d153ac34e1f7b080e35d30e

src/Misc/contentHash/dotnetRuntime/osx-x64

@@ -1 +1 @@
-c9d5a542f8d765168855a89e83ae0a8970d00869041c4f9a766651c04c72b212
+dcb7f606c1d7d290381e5020ee73e7f16dcbd2f20ac9b431362ccbb5120d449c

src/Misc/contentHash/dotnetRuntime/win-arm64

@@ -1 +1 @@
-39d0683f0f115a211cb10c473e9574c16549a19d4e9a6c637ded3d7022bf809f
+1bbcb0e9a2cf4be4b1fce77458de139b70ac58efcbb415a6db028b9373ae1673

src/Misc/contentHash/dotnetRuntime/win-x64

@@ -1 +1 @@
-d94f2fbaf210297162bc9f3add819d73682c3aa6899e321c3872412b924d5504
+44cd25f3c104d0abb44d262397a80e0b2c4f206465c5d899a22eec043dac0fb3

src/Misc/contentHash/externals/linux-arm

@@ -1 +1 @@
-6ed30a2c1ee403a610d63e82bb230b9ba846a9c25cec9e4ea8672fb6ed4e1a51
+3807dcbf947e840c33535fb466b096d76bf09e5c0254af8fc8cbbb24c6388222

src/Misc/contentHash/externals/linux-arm64

@@ -1 +1 @@
-711c30c51ec52c9b7a9a2eb399d6ab2ab5ee1dc72de11879f2f36f919f163d78
+ee01eee80cd8a460a4b9780ee13fdd20f25c59e754b4ccd99df55fbba2a85634

src/Misc/contentHash/externals/linux-x64

@@ -1 +1 @@
-a49479ca4b4988a06c097e8d22c51fd08a11c13f40807366236213d0e008cf6a
+a9fb9c14e24e79aec97d4da197dd7bfc6364297d6fce573afb2df48cc9a931f8

src/Misc/contentHash/externals/osx-arm64

@@ -1 +1 @@
-cc4708962a80325de0baa5ae8484e0cb9ae976ac6a4178c1c0d448b8c52bd7f7
+a4e0e8fc62eba0967a39c7d693dcd0aeb8b2bed0765f9c38df80d42884f65341

src/Misc/contentHash/externals/osx-x64

@@ -1 +1 @@
-8e97df75230b843462a9b4c578ccec604ee4b4a1066120c85b04374317fa372b
+17ac17fbe785b3d6fa2868d8d17185ebfe0c90b4b0ddf6b67eac70e42bcd989b

src/Misc/contentHash/externals/win-arm64

@@ -1 +1 @@
-e5dace2d41cc0682d096dcce4970079ad48ec7107e46195970eecfdb3df2acef
+89f24657a550f1e818b0e9975e5b80edcf4dd22b7d4bccbb9e48e37f45d30fb1

src/Misc/contentHash/externals/win-x64

@@ -1 +1 @@
-f75a671e5a188c76680739689aa75331a2c09d483dce9c80023518c48fd67a18
+24fd131b5dce33ef16038b771407bc0507da8682a72fb3b7780607235f76db0b

src/Misc/expressionFunc/hashFiles/package-lock.json

@@ -14,7 +14,7 @@
       "devDependencies": {
         "@types/node": "^12.7.12",
         "@typescript-eslint/parser": "^5.15.0",
-        "@zeit/ncc": "^0.20.5",
+        "@vercel/ncc": "^0.36.0",
         "eslint": "^8.11.0",
         "eslint-plugin-github": "^4.3.5",
         "prettier": "^1.19.1",
@@ -346,11 +346,10 @@
         "url": "https://opencollective.com/typescript-eslint"
       }
     },
-    "node_modules/@zeit/ncc": {
-      "version": "0.20.5",
-      "resolved": "https://registry.npmjs.org/@zeit/ncc/-/ncc-0.20.5.tgz",
-      "integrity": "sha512-XU6uzwvv95DqxciQx+aOLhbyBx/13ky+RK1y88Age9Du3BlA4mMPCy13BGjayOrrumOzlq1XV3SD/BWiZENXlw==",
-      "deprecated": "@zeit/ncc is no longer maintained. Please use @vercel/ncc instead.",
+    "node_modules/@vercel/ncc": {
+      "version": "0.36.0",
+      "resolved": "https://registry.npmjs.org/@vercel/ncc/-/ncc-0.36.0.tgz",
+      "integrity": "sha512-/ZTUJ/ZkRt694k7KJNimgmHjtQcRuVwsST2Z6XfYveQIuBbHR+EqkTc1jfgPkQmMyk/vtpxo3nVxe8CNuau86A==",
       "dev": true,
       "bin": {
         "ncc": "dist/ncc/cli.js"
@@ -1722,9 +1721,9 @@
       "dev": true
     },
     "node_modules/json5": {
-      "version": "1.0.1",
-      "resolved": "https://registry.npmjs.org/json5/-/json5-1.0.1.tgz",
-      "integrity": "sha512-aKS4WQjPenRxiQsC93MNfjx+nbF4PAdYzmd/1JIj8HYzqfbu86beTuNgXDzPknWk0n0uARlyewZo4s++ES36Ow==",
+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/json5/-/json5-1.0.2.tgz",
+      "integrity": "sha512-g1MWMLBiz8FKi1e4w0UyVL3w+iJceWAFBAaBnnGKOpNa5f8TLktkbre1+s6oICydWAm+HRUGTmI+//xv2hvXYA==",
       "dev": true,
       "dependencies": {
         "minimist": "^1.2.0"
@@ -1824,9 +1823,9 @@
       }
     },
     "node_modules/minimatch": {
-      "version": "3.0.4",
-      "resolved": "https://registry.npmjs.org/minimatch/-/minimatch-3.0.4.tgz",
-      "integrity": "sha512-yJHVQEhyqPLUTgt9B83PXu6W3rx4MvvHvSUvToogpwoGDOUQ+yDrR0HRot+yOCdCO7u4hX3pWft6kWBBcqh0UA==",
+      "version": "3.1.2",
+      "resolved": "https://registry.npmjs.org/minimatch/-/minimatch-3.1.2.tgz",
+      "integrity": "sha512-J7p63hRiAjw1NDEww1W7i37+ByIrOWO5XQQAzZ3VOcL0PNybwpfmV/N05zFAzwQ9USyEcX6t3UO+K5aqBQOIHw==",
       "dependencies": {
         "brace-expansion": "^1.1.7"
       },
@@ -2747,10 +2746,10 @@
         "eslint-visitor-keys": "^3.0.0"
       }
     },
-    "@zeit/ncc": {
-      "version": "0.20.5",
-      "resolved": "https://registry.npmjs.org/@zeit/ncc/-/ncc-0.20.5.tgz",
-      "integrity": "sha512-XU6uzwvv95DqxciQx+aOLhbyBx/13ky+RK1y88Age9Du3BlA4mMPCy13BGjayOrrumOzlq1XV3SD/BWiZENXlw==",
+    "@vercel/ncc": {
+      "version": "0.36.0",
+      "resolved": "https://registry.npmjs.org/@vercel/ncc/-/ncc-0.36.0.tgz",
+      "integrity": "sha512-/ZTUJ/ZkRt694k7KJNimgmHjtQcRuVwsST2Z6XfYveQIuBbHR+EqkTc1jfgPkQmMyk/vtpxo3nVxe8CNuau86A==",
       "dev": true
     },
     "acorn": {
@@ -3756,9 +3755,9 @@
       "dev": true
     },
     "json5": {
-      "version": "1.0.1",
-      "resolved": "https://registry.npmjs.org/json5/-/json5-1.0.1.tgz",
-      "integrity": "sha512-aKS4WQjPenRxiQsC93MNfjx+nbF4PAdYzmd/1JIj8HYzqfbu86beTuNgXDzPknWk0n0uARlyewZo4s++ES36Ow==",
+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/json5/-/json5-1.0.2.tgz",
+      "integrity": "sha512-g1MWMLBiz8FKi1e4w0UyVL3w+iJceWAFBAaBnnGKOpNa5f8TLktkbre1+s6oICydWAm+HRUGTmI+//xv2hvXYA==",
       "dev": true,
       "requires": {
         "minimist": "^1.2.0"
@@ -3840,9 +3839,9 @@
       }
     },
     "minimatch": {
-      "version": "3.0.4",
-      "resolved": "https://registry.npmjs.org/minimatch/-/minimatch-3.0.4.tgz",
-      "integrity": "sha512-yJHVQEhyqPLUTgt9B83PXu6W3rx4MvvHvSUvToogpwoGDOUQ+yDrR0HRot+yOCdCO7u4hX3pWft6kWBBcqh0UA==",
+      "version": "3.1.2",
+      "resolved": "https://registry.npmjs.org/minimatch/-/minimatch-3.1.2.tgz",
+      "integrity": "sha512-J7p63hRiAjw1NDEww1W7i37+ByIrOWO5XQQAzZ3VOcL0PNybwpfmV/N05zFAzwQ9USyEcX6t3UO+K5aqBQOIHw==",
       "requires": {
         "brace-expansion": "^1.1.7"
       }

src/Misc/expressionFunc/hashFiles/package.json

@@ -26,7 +26,7 @@
   "devDependencies": {
     "@types/node": "^12.7.12",
     "@typescript-eslint/parser": "^5.15.0",
-    "@zeit/ncc": "^0.20.5",
+    "@vercel/ncc": "^0.36.0",
     "eslint": "^8.11.0",
     "eslint-plugin-github": "^4.3.5",
     "prettier": "^1.19.1",

src/Misc/externals.sh

@@ -5,7 +5,7 @@ PRECACHE=$2
 NODE_URL=https://nodejs.org/dist
 UNOFFICIAL_NODE_URL=https://unofficial-builds.nodejs.org/download/release
 NODE12_VERSION="12.22.7"
-NODE16_VERSION="16.13.0"
+NODE16_VERSION="16.16.0"
 
 get_abs_path() {
   # exploits the fact that pwd will print abs path when no args

src/Misc/layoutbin/RunnerService.js

@@ -24,7 +24,8 @@ if (exitServiceAfterNFailures <= 0) {
   exitServiceAfterNFailures = NaN;
 }
 
-var consecutiveFailureCount = 0;
+var unknownFailureRetryCount = 0;
+var retriableFailureRetryCount = 0;
 
 var gracefulShutdown = function () {
   console.log("Shutting down runner listener");
@@ -62,7 +63,8 @@ var runService = function () {
 
       listener.stdout.on("data", (data) => {
         if (data.toString("utf8").includes("Listening for Jobs")) {
-          consecutiveFailureCount = 0;
+          unknownFailureRetryCount = 0;
+          retriableFailureRetryCount = 0;
         }
         process.stdout.write(data.toString("utf8"));
       });
@@ -92,24 +94,38 @@ var runService = function () {
           console.log(
             "Runner listener exit with retryable error, re-launch runner in 5 seconds."
           );
-          consecutiveFailureCount = 0;
+          unknownFailureRetryCount = 0;
+          retriableFailureRetryCount++;
+          if (retriableFailureRetryCount >= 10) {
+            console.error(
+              "Stopping the runner after 10 consecutive re-tryable failures"
+            );
+            stopping = true;
+          }
         } else if (code === 3 || code === 4) {
           console.log(
             "Runner listener exit because of updating, re-launch runner in 5 seconds."
           );
-          consecutiveFailureCount = 0;
+          unknownFailureRetryCount = 0;
+          retriableFailureRetryCount++;
+          if (retriableFailureRetryCount >= 10) {
+            console.error(
+              "Stopping the runner after 10 consecutive re-tryable failures"
+            );
+            stopping = true;
+          }
         } else {
           var messagePrefix = "Runner listener exit with undefined return code";
-          consecutiveFailureCount++;
+          unknownFailureRetryCount++;
+          retriableFailureRetryCount = 0;
           if (
             !isNaN(exitServiceAfterNFailures) &&
-            consecutiveFailureCount >= exitServiceAfterNFailures
+            unknownFailureRetryCount >= exitServiceAfterNFailures
           ) {
             console.error(
-              `${messagePrefix}, exiting service after ${consecutiveFailureCount} consecutive failures`
+              `${messagePrefix}, exiting service after ${unknownFailureRetryCount} consecutive failures`
             );
-            gracefulShutdown();
-            return;
+            stopping = true
           } else {
             console.log(`${messagePrefix}, re-launch runner in 5 seconds.`);
           }

src/Misc/layoutroot/run-helper.sh.template

@@ -18,6 +18,20 @@ while [ -h "$SOURCE" ]; do # resolve $SOURCE until the file is no longer a symli
 done
 DIR="$( cd -P "$( dirname "$SOURCE" )" && pwd )"
 
+# Wait for docker to start
+if [ ! -z "$RUNNER_WAIT_FOR_DOCKER_IN_SECONDS" ]; then
+    if [ "$RUNNER_WAIT_FOR_DOCKER_IN_SECONDS" -gt 0 ]; then
+        echo "Waiting for docker to be ready."
+        for i in $(seq "$RUNNER_WAIT_FOR_DOCKER_IN_SECONDS"); do
+            if docker ps > /dev/null 2>&1; then
+                echo "Docker is ready."
+                break
+            fi
+            "$DIR"/safe_sleep.sh 1
+        done
+    fi
+fi
+
 updateFile="update.finished"
 "$DIR"/bin/Runner.Listener run $*
 

src/Misc/layoutroot/run.sh

@@ -53,6 +53,33 @@ runWithManualTrap() {
     done
 }
 
+function updateCerts() {
+    local sudo_prefix=""
+    local user_id=`id -u`
+
+    if [ $user_id -ne 0 ]; then
+        if [[ ! -x "$(command -v sudo)" ]]; then
+            echo "Warning: failed to update certificate store: sudo is required but not found"
+            return 1
+        else
+            sudo_prefix="sudo"
+        fi
+    fi
+
+    if [[ -x "$(command -v update-ca-certificates)" ]]; then
+        eval $sudo_prefix "update-ca-certificates"
+    elif [[ -x "$(command -v update-ca-trust)" ]]; then
+        eval $sudo_prefix "update-ca-trust"
+    else
+        echo "Warning: failed to update certificate store: update-ca-certificates or update-ca-trust not found. This can happen if you're using a different runner base image."
+        return 1
+    fi
+}
+
+if [[ ! -z "$RUNNER_UPDATE_CA_CERTS" ]]; then
+    updateCerts
+fi
+
 if [[ -z "$RUNNER_MANUALLY_TRAP_SIG" ]]; then
     run $*
 else

src/Misc/runnerdotnetruntimeassets

@@ -74,6 +74,7 @@ Microsoft.Win32.Registry.dll
 mscordaccore.dll
 mscordaccore_amd64_amd64_6.0.522.21309.dll
 mscordaccore_arm64_arm64_6.0.522.21309.dll
+mscordaccore_amd64_amd64_6.0.1322.58009.dll
 mscordbi.dll
 mscorlib.dll
 mscorrc.debug.dll

src/Runner.Common/BrokerServer.cs

@@ -0,0 +1,56 @@
+using System;
+using System.Collections.Generic;
+using System.Threading;
+using System.Threading.Tasks;
+using GitHub.Actions.RunService.WebApi;
+using GitHub.DistributedTask.Pipelines;
+using GitHub.DistributedTask.WebApi;
+using GitHub.Runner.Sdk;
+using GitHub.Services.Common;
+using Sdk.RSWebApi.Contracts;
+using Sdk.WebApi.WebApi.RawClient;
+
+namespace GitHub.Runner.Common
+{
+    [ServiceLocator(Default = typeof(BrokerServer))]
+    public interface IBrokerServer : IRunnerService
+    {
+        Task ConnectAsync(Uri serverUrl, VssCredentials credentials);
+
+        Task<TaskAgentMessage> GetRunnerMessageAsync(CancellationToken token, TaskAgentStatus status, string version);
+    }
+
+    public sealed class BrokerServer : RunnerService, IBrokerServer
+    {
+        private bool _hasConnection;
+        private Uri _brokerUri;
+        private RawConnection _connection;
+        private BrokerHttpClient _brokerHttpClient;
+
+        public async Task ConnectAsync(Uri serverUri, VssCredentials credentials)
+        {
+            _brokerUri = serverUri;
+
+            _connection = VssUtil.CreateRawConnection(serverUri, credentials);
+            _brokerHttpClient = await _connection.GetClientAsync<BrokerHttpClient>();
+            _hasConnection = true;
+        }
+
+        private void CheckConnection()
+        {
+            if (!_hasConnection)
+            {
+                throw new InvalidOperationException($"SetConnection");
+            }
+        }
+
+        public Task<TaskAgentMessage> GetRunnerMessageAsync(CancellationToken cancellationToken, TaskAgentStatus status, string version)
+        {
+            CheckConnection();
+            var jobMessage = RetryRequest<TaskAgentMessage>(
+                async () => await _brokerHttpClient.GetRunnerMessageAsync(version, status, cancellationToken), cancellationToken);
+
+            return jobMessage;
+        }
+    }
+}

src/Runner.Common/ConfigurationStore.cs

@@ -50,6 +50,12 @@ namespace GitHub.Runner.Common
         [DataMember(EmitDefaultValue = false)]
         public string MonitorSocketAddress { get; set; }
 
+        [DataMember(EmitDefaultValue = false)]
+        public bool UseV2Flow { get; set; }
+
+        [DataMember(EmitDefaultValue = false)]
+        public string ServerUrlV2 { get; set; }
+
         [IgnoreDataMember]
         public bool IsHostedServer
         {

src/Runner.Common/Constants.cs

@@ -90,7 +90,6 @@ namespace GitHub.Runner.Common
                 public static class Args
                 {
                     public static readonly string Auth = "auth";
-                    public static readonly string JitConfig = "jitconfig";
                     public static readonly string Labels = "labels";
                     public static readonly string MonitorSocketAddress = "monitorsocketaddress";
                     public static readonly string Name = "name";
@@ -105,11 +104,13 @@ namespace GitHub.Runner.Common
                     public static readonly string Token = "token";
                     public static readonly string PAT = "pat";
                     public static readonly string WindowsLogonPassword = "windowslogonpassword";
+                    public static readonly string JitConfig = "jitconfig";
                     public static string[] Secrets => new[]
                     {
                         PAT,
                         Token,
                         WindowsLogonPassword,
+                        JitConfig,
                     };
                 }
 
@@ -130,6 +131,7 @@ namespace GitHub.Runner.Common
                     public static readonly string Ephemeral = "ephemeral";
                     public static readonly string GenerateServiceConfig = "generateServiceConfig";
                     public static readonly string Help = "help";
+                    public static readonly string Local = "local";
                     public static readonly string Replace = "replace";
                     public static readonly string DisableUpdate = "disableupdate";
                     public static readonly string Once = "once"; // Keep this around since customers still relies on it
@@ -157,9 +159,11 @@ namespace GitHub.Runner.Common
             }
 
             public static readonly string InternalTelemetryIssueDataKey = "_internal_telemetry";
+            public static readonly Guid TelemetryRecordId = new Guid("11111111-1111-1111-1111-111111111111");
             public static readonly string WorkerCrash = "WORKER_CRASH";
             public static readonly string LowDiskSpace = "LOW_DISK_SPACE";
             public static readonly string UnsupportedCommand = "UNSUPPORTED_COMMAND";
+            public static readonly string ResultsUploadFailure = "RESULTS_UPLOAD_FAILURE";
             public static readonly string UnsupportedCommandMessage = "The `{0}` command is deprecated and will be disabled soon. Please upgrade to using Environment Files. For more information see: https://github.blog/changelog/2022-10-11-github-actions-deprecating-save-state-and-set-output-commands/";
             public static readonly string UnsupportedCommandMessageDisabled = "The `{0}` command is disabled. Please upgrade to using Environment Files or opt into unsecure command execution by setting the `ACTIONS_ALLOW_UNSECURE_COMMANDS` environment variable to `true`. For more information see: https://github.blog/changelog/2020-10-01-github-actions-deprecating-set-env-and-add-path-commands/";
             public static readonly string UnsupportedStopCommandTokenDisabled = "You cannot use a endToken that is an empty string, the string 'pause-logging', or another workflow command. For more information see: https://docs.github.com/actions/learn-github-actions/workflow-commands-for-github-actions#example-stopping-and-starting-workflow-commands or opt into insecure command execution by setting the `ACTIONS_ALLOW_UNSECURE_STOPCOMMAND_TOKENS` environment variable to `true`.";

src/Runner.Common/HostContext.cs

@@ -1,4 +1,4 @@
-using System;
+using System;
 using System.Collections.Concurrent;
 using System.Collections.Generic;
 using System.Diagnostics;
@@ -53,7 +53,7 @@ namespace GitHub.Runner.Common
         private static int[] _vssHttpCredentialEventIds = new int[] { 11, 13, 14, 15, 16, 17, 18, 20, 21, 22, 27, 29 };
         private readonly ConcurrentDictionary<Type, object> _serviceInstances = new();
         private readonly ConcurrentDictionary<Type, Type> _serviceTypes = new();
-        private readonly ISecretMasker _secretMasker = new SecretMasker();
+        private readonly ISecretMasker _secretMasker;
         private readonly List<ProductInfoHeaderValue> _userAgents = new() { new ProductInfoHeaderValue($"GitHubActionsRunner-{BuildConstants.RunnerPackage.PackageName}", BuildConstants.RunnerPackage.Version) };
         private CancellationTokenSource _runnerShutdownTokenSource = new();
         private object _perfLock = new();
@@ -82,17 +82,20 @@ namespace GitHub.Runner.Common
             _loadContext = AssemblyLoadContext.GetLoadContext(typeof(HostContext).GetTypeInfo().Assembly);
             _loadContext.Unloading += LoadContext_Unloading;
 
-            this.SecretMasker.AddValueEncoder(ValueEncoders.Base64StringEscape);
-            this.SecretMasker.AddValueEncoder(ValueEncoders.Base64StringEscapeShift1);
-            this.SecretMasker.AddValueEncoder(ValueEncoders.Base64StringEscapeShift2);
-            this.SecretMasker.AddValueEncoder(ValueEncoders.CommandLineArgumentEscape);
-            this.SecretMasker.AddValueEncoder(ValueEncoders.ExpressionStringEscape);
-            this.SecretMasker.AddValueEncoder(ValueEncoders.JsonStringEscape);
-            this.SecretMasker.AddValueEncoder(ValueEncoders.UriDataEscape);
-            this.SecretMasker.AddValueEncoder(ValueEncoders.XmlDataEscape);
-            this.SecretMasker.AddValueEncoder(ValueEncoders.TrimDoubleQuotes);
-            this.SecretMasker.AddValueEncoder(ValueEncoders.PowerShellPreAmpersandEscape);
-            this.SecretMasker.AddValueEncoder(ValueEncoders.PowerShellPostAmpersandEscape);
+            var masks = new List<ValueEncoder>()
+            {
+                ValueEncoders.EnumerateBase64Variations,
+                ValueEncoders.CommandLineArgumentEscape,
+                ValueEncoders.ExpressionStringEscape,
+                ValueEncoders.JsonStringEscape,
+                ValueEncoders.UriDataEscape,
+                ValueEncoders.XmlDataEscape,
+                ValueEncoders.TrimDoubleQuotes,
+                ValueEncoders.PowerShellPreAmpersandEscape,
+                ValueEncoders.PowerShellPostAmpersandEscape
+            };
+            _secretMasker = new SecretMasker(masks);
+
 
             // Create StdoutTraceListener if ENV is set
             StdoutTraceListener stdoutTraceListener = null;
@@ -220,12 +223,26 @@ namespace GitHub.Runner.Common
             var runnerFile = GetConfigFile(WellKnownConfigFile.Runner);
             if (File.Exists(runnerFile))
             {
-                var runnerSettings = IOUtil.LoadObject<RunnerSettings>(runnerFile);
+                var runnerSettings = IOUtil.LoadObject<RunnerSettings>(runnerFile, true);
                 _userAgents.Add(new ProductInfoHeaderValue("RunnerId", runnerSettings.AgentId.ToString(CultureInfo.InvariantCulture)));
                 _userAgents.Add(new ProductInfoHeaderValue("GroupId", runnerSettings.PoolId.ToString(CultureInfo.InvariantCulture)));
             }
 
             _userAgents.Add(new ProductInfoHeaderValue("CommitSHA", BuildConstants.Source.CommitHash));
+
+            var extraUserAgent = Environment.GetEnvironmentVariable("GITHUB_ACTIONS_RUNNER_EXTRA_USER_AGENT");
+            if (!string.IsNullOrEmpty(extraUserAgent))
+            {
+                var extraUserAgentSplit = extraUserAgent.Split('/', StringSplitOptions.RemoveEmptyEntries);
+                if (extraUserAgentSplit.Length != 2)
+                {
+                    _trace.Error($"GITHUB_ACTIONS_RUNNER_EXTRA_USER_AGENT is not in the format of 'name/version'.");
+                }
+
+                var extraUserAgentHeader = new ProductInfoHeaderValue(extraUserAgentSplit[0], extraUserAgentSplit[1]);
+                _trace.Info($"Adding extra user agent '{extraUserAgentHeader}' to all HTTP requests.");
+                _userAgents.Add(extraUserAgentHeader);
+            }
         }
 
         public string GetDirectory(WellKnownDirectory directory)

src/Runner.Common/JobServer.cs

@@ -24,13 +24,11 @@ namespace GitHub.Runner.Common
         Task ConnectAsync(VssConnection jobConnection);
 
         void InitializeWebsocketClient(ServiceEndpoint serviceEndpoint);
-        void InitializeResultsClient(Uri uri, string token);
 
         // logging and console
         Task<TaskLog> AppendLogContentAsync(Guid scopeIdentifier, string hubName, Guid planId, int logId, Stream uploadStream, CancellationToken cancellationToken);
         Task AppendTimelineRecordFeedAsync(Guid scopeIdentifier, string hubName, Guid planId, Guid timelineId, Guid timelineRecordId, Guid stepId, IList<string> lines, long? startLine, CancellationToken cancellationToken);
         Task<TaskAttachment> CreateAttachmentAsync(Guid scopeIdentifier, string hubName, Guid planId, Guid timelineId, Guid timelineRecordId, String type, String name, Stream uploadStream, CancellationToken cancellationToken);
-        Task CreateStepSymmaryAsync(string planId, string jobId, string stepId, string file, CancellationToken cancellationToken);
         Task<TaskLog> CreateLogAsync(Guid scopeIdentifier, string hubName, Guid planId, TaskLog log, CancellationToken cancellationToken);
         Task<Timeline> CreateTimelineAsync(Guid scopeIdentifier, string hubName, Guid planId, Guid timelineId, CancellationToken cancellationToken);
         Task<List<TimelineRecord>> UpdateTimelineRecordsAsync(Guid scopeIdentifier, string hubName, Guid planId, Guid timelineId, IEnumerable<TimelineRecord> records, CancellationToken cancellationToken);
@@ -44,7 +42,6 @@ namespace GitHub.Runner.Common
         private bool _hasConnection;
         private VssConnection _connection;
         private TaskHttpClient _taskClient;
-        private ResultsHttpClient _resultsClient;
         private ClientWebSocket _websocketClient;
 
         private ServiceEndpoint _serviceEndpoint;
@@ -148,12 +145,6 @@ namespace GitHub.Runner.Common
             InitializeWebsocketClient(TimeSpan.Zero);
         }
 
-        public void InitializeResultsClient(Uri uri, string token)
-        {
-            var httpMessageHandler = HostContext.CreateHttpClientHandler();
-            this._resultsClient = new ResultsHttpClient(uri, httpMessageHandler, token, disposeHandler: true);
-        }
-
         public ValueTask DisposeAsync()
         {
             CloseWebSocket(WebSocketCloseStatus.NormalClosure, CancellationToken.None);
@@ -316,15 +307,6 @@ namespace GitHub.Runner.Common
             return _taskClient.CreateAttachmentAsync(scopeIdentifier, hubName, planId, timelineId, timelineRecordId, type, name, uploadStream, cancellationToken: cancellationToken);
         }
 
-        public Task CreateStepSymmaryAsync(string planId, string jobId, string stepId, string file, CancellationToken cancellationToken)
-        {
-            if (_resultsClient != null)
-            {
-                return _resultsClient.UploadStepSummaryAsync(planId, jobId, stepId, file, cancellationToken: cancellationToken);
-            }
-            throw new InvalidOperationException("Results client is not initialized.");
-        }
-
 
         public Task<TaskLog> CreateLogAsync(Guid scopeIdentifier, string hubName, Guid planId, TaskLog log, CancellationToken cancellationToken)
         {

src/Runner.Common/JobServerQueue.cs

@@ -20,7 +20,7 @@ namespace GitHub.Runner.Common
         void Start(Pipelines.AgentJobRequestMessage jobRequest);
         void QueueWebConsoleLine(Guid stepRecordId, string line, long? lineNumber = null);
         void QueueFileUpload(Guid timelineId, Guid timelineRecordId, string type, string name, string path, bool deleteSource);
-        void QueueSummaryUpload(Guid timelineId, Guid timelineRecordId, string stepId, string name, string path, bool deleteSource);
+        void QueueResultsUpload(Guid timelineRecordId, string name, string path, string type, bool deleteSource, bool finalize, bool firstBlock, long totalLines);
         void QueueTimelineRecordUpdate(Guid timelineId, TimelineRecord timelineRecord);
     }
 
@@ -31,7 +31,7 @@ namespace GitHub.Runner.Common
         private static readonly TimeSpan _delayForWebConsoleLineDequeue = TimeSpan.FromMilliseconds(500);
         private static readonly TimeSpan _delayForTimelineUpdateDequeue = TimeSpan.FromMilliseconds(500);
         private static readonly TimeSpan _delayForFileUploadDequeue = TimeSpan.FromMilliseconds(1000);
-        private static readonly TimeSpan _delayForSummaryUploadDequeue = TimeSpan.FromMilliseconds(1000);
+        private static readonly TimeSpan _delayForResultsUploadDequeue = TimeSpan.FromMilliseconds(1000);
 
         // Job message information
         private Guid _scopeIdentifier;
@@ -46,7 +46,7 @@ namespace GitHub.Runner.Common
         // queue for file upload (log file or attachment)
         private readonly ConcurrentQueue<UploadFileInfo> _fileUploadQueue = new();
 
-        private readonly ConcurrentQueue<SummaryUploadFileInfo> _summaryFileUploadQueue = new();
+        private readonly ConcurrentQueue<ResultsUploadFileInfo> _resultsFileUploadQueue = new();
 
         // queue for timeline or timeline record update (one queue per timeline)
         private readonly ConcurrentDictionary<Guid, ConcurrentQueue<TimelineRecord>> _timelineUpdateQueue = new();
@@ -60,11 +60,12 @@ namespace GitHub.Runner.Common
         // Task for each queue's dequeue process
         private Task _webConsoleLineDequeueTask;
         private Task _fileUploadDequeueTask;
-        private Task _summaryUploadDequeueTask;
+        private Task _resultsUploadDequeueTask;
         private Task _timelineUpdateDequeueTask;
 
         // common
         private IJobServer _jobServer;
+        private IResultsServer _resultsServer;
         private Task[] _allDequeueTasks;
         private readonly TaskCompletionSource<int> _jobCompletionSource = new();
         private readonly TaskCompletionSource<int> _jobRecordUpdated = new();
@@ -84,10 +85,14 @@ namespace GitHub.Runner.Common
         private bool _webConsoleLineAggressiveDequeue = true;
         private bool _firstConsoleOutputs = true;
 
+        private bool _resultsClientInitiated = false;
+        private delegate Task ResultsFileUploadHandler(ResultsUploadFileInfo file);
+
         public override void Initialize(IHostContext hostContext)
         {
             base.Initialize(hostContext);
             _jobServer = hostContext.GetService<IJobServer>();
+            _resultsServer = hostContext.GetService<IResultsServer>();
         }
 
         public void Start(Pipelines.AgentJobRequestMessage jobRequest)
@@ -108,10 +113,10 @@ namespace GitHub.Runner.Common
                 !string.IsNullOrEmpty(resultsReceiverEndpoint))
             {
                 Trace.Info("Initializing results client");
-                _jobServer.InitializeResultsClient(new Uri(resultsReceiverEndpoint), accessToken);
+                _resultsServer.InitializeResultsClient(new Uri(resultsReceiverEndpoint), accessToken);
+                _resultsClientInitiated = true;
             }
 
-
             if (_queueInProcess)
             {
                 Trace.Info("No-opt, all queue process tasks are running.");
@@ -140,12 +145,12 @@ namespace GitHub.Runner.Common
             _fileUploadDequeueTask = ProcessFilesUploadQueueAsync();
 
             Trace.Info("Start results file upload queue.");
-            _summaryUploadDequeueTask = ProcessSummaryUploadQueueAsync();
+            _resultsUploadDequeueTask = ProcessResultsUploadQueueAsync();
 
             Trace.Info("Start process timeline update queue.");
             _timelineUpdateDequeueTask = ProcessTimelinesUpdateQueueAsync();
 
-            _allDequeueTasks = new Task[] { _webConsoleLineDequeueTask, _fileUploadDequeueTask, _timelineUpdateDequeueTask, _summaryUploadDequeueTask };
+            _allDequeueTasks = new Task[] { _webConsoleLineDequeueTask, _fileUploadDequeueTask, _timelineUpdateDequeueTask, _resultsUploadDequeueTask };
             _queueInProcess = true;
         }
 
@@ -176,9 +181,9 @@ namespace GitHub.Runner.Common
             await ProcessFilesUploadQueueAsync(runOnce: true);
             Trace.Info("File upload queue drained.");
 
-            Trace.Verbose("Draining results summary upload queue.");
-            await ProcessSummaryUploadQueueAsync(runOnce: true);
-            Trace.Info("Results summary upload queue drained.");
+            Trace.Verbose("Draining results upload queue.");
+            await ProcessResultsUploadQueueAsync(runOnce: true);
+            Trace.Info("Results upload queue drained.");
 
             // ProcessTimelinesUpdateQueueAsync() will throw exception during shutdown
             // if there is any timeline records that failed to update contains output variabls.
@@ -230,26 +235,43 @@ namespace GitHub.Runner.Common
             _fileUploadQueue.Enqueue(newFile);
         }
 
-        public void QueueSummaryUpload(Guid timelineId, Guid timelineRecordId, string stepId, string name, string path, bool deleteSource)
+        public void QueueResultsUpload(Guid timelineRecordId, string name, string path, string type, bool deleteSource, bool finalize, bool firstBlock, long totalLines)
         {
-            ArgUtil.NotEmpty(timelineId, nameof(timelineId));
-            ArgUtil.NotEmpty(timelineRecordId, nameof(timelineRecordId));
+            if (!_resultsClientInitiated)
+            {
+                Trace.Verbose("Skipping results upload");
+                try
+                {
+                    if (deleteSource)
+                    {
+                        File.Delete(path);
+                    }
+                }
+                catch (Exception ex)
+                {
+                    Trace.Info("Catch exception during delete skipped results upload file.");
+                    Trace.Error(ex);
+                }
+                return;
+            }
 
             // all parameter not null, file path exist.
-            var newFile = new SummaryUploadFileInfo()
+            var newFile = new ResultsUploadFileInfo()
             {
-                TimelineId = timelineId,
-                TimelineRecordId = timelineRecordId,
                 Name = name,
                 Path = path,
+                Type = type,
                 PlanId = _planId.ToString(),
                 JobId = _jobTimelineRecordId.ToString(),
-                StepId = stepId,
-                DeleteSource = deleteSource
+                RecordId = timelineRecordId,
+                DeleteSource = deleteSource,
+                Finalize = finalize,
+                FirstBlock = firstBlock,
+                TotalLines = totalLines,
             };
 
-            Trace.Verbose("Enqueue results file upload queue: file '{0}' attach to record {1}", newFile.Path, timelineRecordId);
-            _summaryFileUploadQueue.Enqueue(newFile);
+            Trace.Verbose("Enqueue results file upload queue: file '{0}' attach to job {1} step {2}", newFile.Path, _jobTimelineRecordId, timelineRecordId);
+            _resultsFileUploadQueue.Enqueue(newFile);
         }
 
         public void QueueTimelineRecordUpdate(Guid timelineId, TimelineRecord timelineRecord)
@@ -442,18 +464,18 @@ namespace GitHub.Runner.Common
             }
         }
 
-        private async Task ProcessSummaryUploadQueueAsync(bool runOnce = false)
+        private async Task ProcessResultsUploadQueueAsync(bool runOnce = false)
         {
             Trace.Info("Starting results-based upload queue...");
 
             while (!_jobCompletionSource.Task.IsCompleted || runOnce)
             {
-                List<SummaryUploadFileInfo> filesToUpload = new();
-                SummaryUploadFileInfo dequeueFile;
-                while (_summaryFileUploadQueue.TryDequeue(out dequeueFile))
+                List<ResultsUploadFileInfo> filesToUpload = new();
+                ResultsUploadFileInfo dequeueFile;
+                while (_resultsFileUploadQueue.TryDequeue(out dequeueFile))
                 {
                     filesToUpload.Add(dequeueFile);
-                    // process at most 10 file upload.
+                    // process at most 10 file uploads.
                     if (!runOnce && filesToUpload.Count > 10)
                     {
                         break;
@@ -464,7 +486,7 @@ namespace GitHub.Runner.Common
                 {
                     if (runOnce)
                     {
-                        Trace.Info($"Uploading {filesToUpload.Count} summary files in one shot through results service.");
+                        Trace.Info($"Uploading {filesToUpload.Count} file(s) in one shot through results service.");
                     }
 
                     int errorCount = 0;
@@ -472,17 +494,38 @@ namespace GitHub.Runner.Common
                     {
                         try
                         {
-                            await UploadSummaryFile(file);
+                            if (String.Equals(file.Type, ChecksAttachmentType.StepSummary, StringComparison.OrdinalIgnoreCase))
+                            {
+                                await UploadSummaryFile(file);
+                            }
+                            else if (String.Equals(file.Type, CoreAttachmentType.ResultsLog, StringComparison.OrdinalIgnoreCase))
+                            {
+                                if (file.RecordId != _jobTimelineRecordId)
+                                {
+                                    Trace.Info($"Got a step log file to send to results service.");
+                                    await UploadResultsStepLogFile(file);
+                                }
+                                else if (file.RecordId == _jobTimelineRecordId)
+                                {
+                                    Trace.Info($"Got a job log file to send to results service.");
+                                    await UploadResultsJobLogFile(file);
+                                }
+                            }
                         }
                         catch (Exception ex)
                         {
-                            Trace.Info("Catch exception during summary file upload to results, keep going since the process is best effort.");
+                            Trace.Info("Catch exception during file upload to results, keep going since the process is best effort.");
                             Trace.Error(ex);
                             errorCount++;
+
+                            // If we hit any exceptions uploading to Results, let's skip any additional uploads to Results
+                            _resultsClientInitiated = false;
+
+                            SendResultsTelemetry(ex);
                         }
                     }
 
-                    Trace.Info("Tried to upload {0} summary files to results, success rate: {1}/{0}.", filesToUpload.Count, filesToUpload.Count - errorCount);
+                    Trace.Info("Tried to upload {0} file(s) to results, success rate: {1}/{0}.", filesToUpload.Count, filesToUpload.Count - errorCount);
                 }
 
                 if (runOnce)
@@ -491,11 +534,24 @@ namespace GitHub.Runner.Common
                 }
                 else
                 {
-                    await Task.Delay(_delayForSummaryUploadDequeue);
+                    await Task.Delay(_delayForResultsUploadDequeue);
                 }
             }
         }
 
+        private void SendResultsTelemetry(Exception ex)
+        {
+            var issue = new Issue() { Type = IssueType.Warning, Message = $"Caught exception with results. {ex.Message}" };
+            issue.Data[Constants.Runner.InternalTelemetryIssueDataKey] = Constants.Runner.ResultsUploadFailure;
+
+            var telemetryRecord = new TimelineRecord()
+            {
+                Id = Constants.Runner.TelemetryRecordId,
+            };
+            telemetryRecord.Issues.Add(issue);
+            QueueTimelineRecordUpdate(_jobTimelineId, telemetryRecord);
+        }
+
         private async Task ProcessTimelinesUpdateQueueAsync(bool runOnce = false)
         {
             while (!_jobCompletionSource.Task.IsCompleted || runOnce)
@@ -566,6 +622,22 @@ namespace GitHub.Runner.Common
                         try
                         {
                             await _jobServer.UpdateTimelineRecordsAsync(_scopeIdentifier, _hubName, _planId, update.TimelineId, update.PendingRecords, default(CancellationToken));
+                            try
+                            {
+                                if (_resultsClientInitiated)
+                                {
+                                    await _resultsServer.UpdateResultsWorkflowStepsAsync(_scopeIdentifier, _hubName, _planId, update.TimelineId, update.PendingRecords, default(CancellationToken));
+                                }
+                            }
+                            catch (Exception e)
+                            {
+                                Trace.Info("Catch exception during update steps, skip update Results.");
+                                Trace.Error(e);
+                                _resultsClientInitiated = false;
+
+                                SendResultsTelemetry(e);
+                            }
+
                             if (_bufferedRetryRecords.Remove(update.TimelineId))
                             {
                                 Trace.Verbose("Cleanup buffered timeline record for timeline: {0}.", update.TimelineId);
@@ -768,16 +840,50 @@ namespace GitHub.Runner.Common
             }
         }
 
-        private async Task UploadSummaryFile(SummaryUploadFileInfo file)
+        private async Task UploadSummaryFile(ResultsUploadFileInfo file)
         {
+            Trace.Info($"Starting to upload summary file to results service {file.Name}, {file.Path}");
+            ResultsFileUploadHandler summaryHandler = async (file) =>
+            {
+                await _resultsServer.CreateResultsStepSummaryAsync(file.PlanId, file.JobId, file.RecordId, file.Path, CancellationToken.None);
+            };
+
+            await UploadResultsFile(file, summaryHandler);
+        }
+
+        private async Task UploadResultsStepLogFile(ResultsUploadFileInfo file)
+        {
+            Trace.Info($"Starting upload of step log file to results service {file.Name}, {file.Path}");
+            ResultsFileUploadHandler stepLogHandler = async (file) =>
+            {
+                await _resultsServer.CreateResultsStepLogAsync(file.PlanId, file.JobId, file.RecordId, file.Path, file.Finalize, file.FirstBlock, file.TotalLines, CancellationToken.None);
+            };
+
+            await UploadResultsFile(file, stepLogHandler);
+        }
+
+        private async Task UploadResultsJobLogFile(ResultsUploadFileInfo file)
+        {
+            Trace.Info($"Starting upload of job log file to results service {file.Name}, {file.Path}");
+            ResultsFileUploadHandler jobLogHandler = async (file) =>
+            {
+                await _resultsServer.CreateResultsJobLogAsync(file.PlanId, file.JobId, file.Path, file.Finalize, file.FirstBlock, file.TotalLines, CancellationToken.None);
+            };
+
+            await UploadResultsFile(file, jobLogHandler);
+        }
+
+        private async Task UploadResultsFile(ResultsUploadFileInfo file, ResultsFileUploadHandler uploadHandler)
+        {
+            if (!_resultsClientInitiated)
+            {
+                return;
+            }
+
             bool uploadSucceed = false;
             try
             {
-                // Upload the step summary
-                Trace.Info($"Starting to upload summary file to results service {file.Name}, {file.Path}");
-                var cancellationTokenSource = new CancellationTokenSource();
-                await _jobServer.CreateStepSymmaryAsync(file.PlanId, file.JobId, file.StepId, file.Path, cancellationTokenSource.Token);
-
+                await uploadHandler(file);
                 uploadSucceed = true;
             }
             finally
@@ -790,7 +896,7 @@ namespace GitHub.Runner.Common
                     }
                     catch (Exception ex)
                     {
-                        Trace.Info("Catch exception during delete success results uploaded summary file.");
+                        Trace.Info("Exception encountered during deletion of a temporary file that was already successfully uploaded to results.");
                         Trace.Error(ex);
                     }
                 }
@@ -814,20 +920,20 @@ namespace GitHub.Runner.Common
         public bool DeleteSource { get; set; }
     }
 
-    internal class SummaryUploadFileInfo
+    internal class ResultsUploadFileInfo
     {
-        public Guid TimelineId { get; set; }
-        public Guid TimelineRecordId { get; set; }
         public string Name { get; set; }
+        public string Type { get; set; }
         public string Path { get; set; }
         public string PlanId { get; set; }
         public string JobId { get; set; }
-        public string StepId { get; set; }
+        public Guid RecordId { get; set; }
         public bool DeleteSource { get; set; }
+        public bool Finalize { get; set; }
+        public bool FirstBlock { get; set; }
+        public long TotalLines { get; set; }
     }
 
-
-
     internal class ConsoleLineInfo
     {
         public ConsoleLineInfo(Guid recordId, string line, long? lineNumber)

src/Runner.Common/Logging.cs

@@ -21,6 +21,12 @@ namespace GitHub.Runner.Common
         // 8 MB
         public const int PageSize = 8 * 1024 * 1024;
 
+        // For Results
+        public static string BlocksFolder = "blocks";
+
+        // 2 MB
+        public const int BlockSize = 2 * 1024 * 1024;
+
         private Guid _timelineId;
         private Guid _timelineRecordId;
         private FileStream _pageData;
@@ -32,6 +38,13 @@ namespace GitHub.Runner.Common
         private string _pagesFolder;
         private IJobServerQueue _jobServerQueue;
 
+        private string _resultsDataFileName;
+        private FileStream _resultsBlockData;
+        private StreamWriter _resultsBlockWriter;
+        private string _resultsBlockFolder;
+        private int _blockByteCount;
+        private int _blockCount;
+
         public long TotalLines => _totalLines;
 
         public override void Initialize(IHostContext hostContext)
@@ -39,8 +52,10 @@ namespace GitHub.Runner.Common
             base.Initialize(hostContext);
             _totalLines = 0;
             _pagesFolder = Path.Combine(hostContext.GetDirectory(WellKnownDirectory.Diag), PagingFolder);
-            _jobServerQueue = HostContext.GetService<IJobServerQueue>();
             Directory.CreateDirectory(_pagesFolder);
+            _resultsBlockFolder = Path.Combine(hostContext.GetDirectory(WellKnownDirectory.Diag), BlocksFolder);
+            Directory.CreateDirectory(_resultsBlockFolder);
+            _jobServerQueue = HostContext.GetService<IJobServerQueue>();
         }
 
         public void Setup(Guid timelineId, Guid timelineRecordId)
@@ -60,11 +75,17 @@ namespace GitHub.Runner.Common
             // lazy creation on write
             if (_pageWriter == null)
             {
-                Create();
+                NewPage();
+            }
+
+            if (_resultsBlockWriter == null)
+            {
+                NewBlock();
             }
 
             string line = $"{DateTime.UtcNow.ToString("O")} {message}";
             _pageWriter.WriteLine(line);
+            _resultsBlockWriter.WriteLine(line);
 
             _totalLines++;
             if (line.IndexOf('\n') != -1)
@@ -78,21 +99,25 @@ namespace GitHub.Runner.Common
                 }
             }
 
-            _byteCount += System.Text.Encoding.UTF8.GetByteCount(line);
+            var bytes = System.Text.Encoding.UTF8.GetByteCount(line);
+            _byteCount += bytes;
+            _blockByteCount += bytes;
             if (_byteCount >= PageSize)
             {
                 NewPage();
             }
+
+            if (_blockByteCount >= BlockSize)
+            {
+                NewBlock();
+            }
+
         }
 
         public void End()
         {
             EndPage();
-        }
-
-        private void Create()
-        {
-            NewPage();
+            EndBlock(true);
         }
 
         private void NewPage()
@@ -117,5 +142,27 @@ namespace GitHub.Runner.Common
                 _jobServerQueue.QueueFileUpload(_timelineId, _timelineRecordId, "DistributedTask.Core.Log", "CustomToolLog", _dataFileName, true);
             }
         }
+
+        private void NewBlock()
+        {
+            EndBlock(false);
+            _blockByteCount = 0;
+            _resultsDataFileName = Path.Combine(_resultsBlockFolder, $"{_timelineId}_{_timelineRecordId}.{++_blockCount}");
+            _resultsBlockData = new FileStream(_resultsDataFileName, FileMode.CreateNew, FileAccess.ReadWrite, FileShare.ReadWrite);
+            _resultsBlockWriter = new StreamWriter(_resultsBlockData, System.Text.Encoding.UTF8);
+        }
+
+        private void EndBlock(bool finalize)
+        {
+            if (_resultsBlockWriter != null)
+            {
+                _resultsBlockWriter.Flush();
+                _resultsBlockData.Flush();
+                _resultsBlockWriter.Dispose();
+                _resultsBlockWriter = null;
+                _resultsBlockData = null;
+                _jobServerQueue.QueueResultsUpload(_timelineRecordId, "ResultsLog", _resultsDataFileName, "Results.Core.Log", deleteSource: true, finalize, firstBlock: _resultsDataFileName.EndsWith(".1"), totalLines: _totalLines);
+            }
+        }
     }
 }

src/Runner.Common/ResultsServer.cs

@@ -0,0 +1,98 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Threading;
+using System.Threading.Tasks;
+using GitHub.DistributedTask.WebApi;
+using GitHub.Services.Results.Client;
+
+namespace GitHub.Runner.Common
+{
+    [ServiceLocator(Default = typeof(ResultServer))]
+    public interface IResultsServer : IRunnerService
+    {
+        void InitializeResultsClient(Uri uri, string token);
+
+        // logging and console
+        Task CreateResultsStepSummaryAsync(string planId, string jobId, Guid stepId, string file,
+            CancellationToken cancellationToken);
+
+        Task CreateResultsStepLogAsync(string planId, string jobId, Guid stepId, string file, bool finalize,
+            bool firstBlock, long lineCount, CancellationToken cancellationToken);
+
+        Task CreateResultsJobLogAsync(string planId, string jobId, string file, bool finalize, bool firstBlock,
+            long lineCount, CancellationToken cancellationToken);
+
+        Task UpdateResultsWorkflowStepsAsync(Guid scopeIdentifier, string hubName, Guid planId, Guid timelineId,
+            IEnumerable<TimelineRecord> records, CancellationToken cancellationToken);
+    }
+
+    public sealed class ResultServer : RunnerService, IResultsServer
+    {
+        private ResultsHttpClient _resultsClient;
+
+        public void InitializeResultsClient(Uri uri, string token)
+        {
+            var httpMessageHandler = HostContext.CreateHttpClientHandler();
+            this._resultsClient = new ResultsHttpClient(uri, httpMessageHandler, token, disposeHandler: true);
+        }
+
+        public Task CreateResultsStepSummaryAsync(string planId, string jobId, Guid stepId, string file,
+            CancellationToken cancellationToken)
+        {
+            if (_resultsClient != null)
+            {
+                return _resultsClient.UploadStepSummaryAsync(planId, jobId, stepId, file,
+                    cancellationToken: cancellationToken);
+            }
+
+            throw new InvalidOperationException("Results client is not initialized.");
+        }
+
+        public Task CreateResultsStepLogAsync(string planId, string jobId, Guid stepId, string file, bool finalize,
+            bool firstBlock, long lineCount, CancellationToken cancellationToken)
+        {
+            if (_resultsClient != null)
+            {
+                return _resultsClient.UploadResultsStepLogAsync(planId, jobId, stepId, file, finalize, firstBlock,
+                    lineCount, cancellationToken: cancellationToken);
+            }
+
+            throw new InvalidOperationException("Results client is not initialized.");
+        }
+
+        public Task CreateResultsJobLogAsync(string planId, string jobId, string file, bool finalize, bool firstBlock,
+            long lineCount, CancellationToken cancellationToken)
+        {
+            if (_resultsClient != null)
+            {
+                return _resultsClient.UploadResultsJobLogAsync(planId, jobId, file, finalize, firstBlock, lineCount,
+                    cancellationToken: cancellationToken);
+            }
+
+            throw new InvalidOperationException("Results client is not initialized.");
+        }
+
+        public Task UpdateResultsWorkflowStepsAsync(Guid scopeIdentifier, string hubName, Guid planId, Guid timelineId,
+            IEnumerable<TimelineRecord> records, CancellationToken cancellationToken)
+        {
+            if (_resultsClient != null)
+            {
+                try
+                {
+                    var timelineRecords = records.ToList();
+                    return _resultsClient.UpdateWorkflowStepsAsync(planId, new List<TimelineRecord>(timelineRecords),
+                        cancellationToken: cancellationToken);
+                }
+                catch (Exception ex)
+                {
+                    // Log error, but continue as this call is best-effort
+                    Trace.Info($"Failed to update steps status due to {ex.GetType().Name}");
+                    Trace.Error(ex);
+                }
+            }
+
+            throw new InvalidOperationException("Results client is not initialized.");
+        }
+    }
+}

src/Runner.Common/RunServer.cs

@@ -1,11 +1,13 @@
-using System;
+using System;
+using System.Collections.Generic;
 using System.Threading;
 using System.Threading.Tasks;
+using GitHub.Actions.RunService.WebApi;
 using GitHub.DistributedTask.Pipelines;
 using GitHub.DistributedTask.WebApi;
 using GitHub.Runner.Sdk;
 using GitHub.Services.Common;
-using GitHub.Services.WebApi;
+using Sdk.RSWebApi.Contracts;
 using Sdk.WebApi.WebApi.RawClient;
 
 namespace GitHub.Runner.Common
@@ -16,6 +18,10 @@ namespace GitHub.Runner.Common
         Task ConnectAsync(Uri serverUrl, VssCredentials credentials);
 
         Task<AgentJobRequestMessage> GetJobMessageAsync(string id, CancellationToken token);
+
+        Task CompleteJobAsync(Guid planId, Guid jobId, TaskResult result, Dictionary<String, VariableValue> outputs, IList<StepResult> stepResults, CancellationToken token);
+
+        Task<RenewJobResponse> RenewJobAsync(Guid planId, Guid jobId, CancellationToken token);
     }
 
     public sealed class RunServer : RunnerService, IRunServer
@@ -29,7 +35,7 @@ namespace GitHub.Runner.Common
         {
             requestUri = serverUri;
 
-            _connection = VssUtil.CreateRawConnection(new Uri(serverUri.Authority), credentials);
+            _connection = VssUtil.CreateRawConnection(serverUri, credentials);
             _runServiceHttpClient = await _connection.GetClientAsync<RunServiceHttpClient>();
             _hasConnection = true;
         }
@@ -55,5 +61,24 @@ namespace GitHub.Runner.Common
             return jobMessage;
         }
 
+        public Task CompleteJobAsync(Guid planId, Guid jobId, TaskResult result, Dictionary<String, VariableValue> outputs, IList<StepResult> stepResults, CancellationToken cancellationToken)
+        {
+            CheckConnection();
+            return RetryRequest(
+                async () => await _runServiceHttpClient.CompleteJobAsync(requestUri, planId, jobId, result, outputs, stepResults, cancellationToken), cancellationToken);
+        }
+
+        public Task<RenewJobResponse> RenewJobAsync(Guid planId, Guid jobId, CancellationToken cancellationToken)
+        {
+            CheckConnection();
+            var renewJobResponse = RetryRequest<RenewJobResponse>(
+                async () => await _runServiceHttpClient.RenewJobAsync(requestUri, planId, jobId, cancellationToken), cancellationToken);
+            if (renewJobResponse == null)
+            {
+                throw new TaskOrchestrationJobNotFoundException(jobId.ToString());
+            }
+
+            return renewJobResponse;
+        }
     }
 }

src/Runner.Common/RunnerDotcomServer.cs

@@ -0,0 +1,237 @@
+using GitHub.DistributedTask.WebApi;
+using System;
+using System.Collections.Generic;
+using System.Threading;
+using System.Threading.Tasks;
+using GitHub.Services.WebApi;
+using GitHub.Services.Common;
+using GitHub.Runner.Sdk;
+using System.Net.Http;
+using System.Net.Http.Headers;
+using System.Linq;
+
+namespace GitHub.Runner.Common
+{
+    [ServiceLocator(Default = typeof(RunnerDotcomServer))]
+    public interface IRunnerDotcomServer : IRunnerService
+    {
+        Task<List<TaskAgent>> GetRunnersAsync(int runnerGroupId, string githubUrl, string githubToken, string agentName);
+
+        Task<DistributedTask.WebApi.Runner> AddRunnerAsync(int runnerGroupId, TaskAgent agent, string githubUrl, string githubToken, string publicKey);
+        Task<List<TaskAgentPool>> GetRunnerGroupsAsync(string githubUrl, string githubToken);
+
+        string GetGitHubRequestId(HttpResponseHeaders headers);
+    }
+
+    public enum RequestType
+    {
+        Get,
+        Post,
+        Patch,
+        Delete
+    }
+
+    public class RunnerDotcomServer : RunnerService, IRunnerDotcomServer
+    {
+        private ITerminal _term;
+
+        public override void Initialize(IHostContext hostContext)
+        {
+            base.Initialize(hostContext);
+            _term = hostContext.GetService<ITerminal>();
+        }
+
+
+        public async Task<List<TaskAgent>> GetRunnersAsync(int runnerGroupId, string githubUrl, string githubToken, string agentName = null)
+        {
+            var githubApiUrl = "";
+            var gitHubUrlBuilder = new UriBuilder(githubUrl);
+            var path = gitHubUrlBuilder.Path.Split('/', '\\', StringSplitOptions.RemoveEmptyEntries);
+            if (path.Length == 1)
+            {
+                // org runner
+                if (UrlUtil.IsHostedServer(gitHubUrlBuilder))
+                {
+                    githubApiUrl = $"{gitHubUrlBuilder.Scheme}://api.{gitHubUrlBuilder.Host}/orgs/{path[0]}/actions/runner-groups/{runnerGroupId}/runners";
+                }
+                else
+                {
+                    githubApiUrl = $"{gitHubUrlBuilder.Scheme}://{gitHubUrlBuilder.Host}/api/v3/orgs/{path[0]}/actions/runner-groups/{runnerGroupId}/runners";
+                }
+            }
+            else if (path.Length == 2)
+            {
+                // repo or enterprise runner.
+                if (!string.Equals(path[0], "enterprises", StringComparison.OrdinalIgnoreCase))
+                {
+                    return null;
+                }
+
+                if (UrlUtil.IsHostedServer(gitHubUrlBuilder))
+                {
+                    githubApiUrl = $"{gitHubUrlBuilder.Scheme}://api.{gitHubUrlBuilder.Host}/{path[0]}/{path[1]}/actions/runner-groups/{runnerGroupId}/runners";
+                }
+                else
+                {
+                    githubApiUrl = $"{gitHubUrlBuilder.Scheme}://{gitHubUrlBuilder.Host}/api/v3/{path[0]}/{path[1]}/actions/runner-groups/{runnerGroupId}/runners";
+                }
+            }
+            else
+            {
+                throw new ArgumentException($"'{githubUrl}' should point to an org or enterprise.");
+            }
+
+            var runnersList = await RetryRequest<ListRunnersResponse>(githubApiUrl, githubToken, RequestType.Get, 3, "Failed to get agents pools");
+            var agents = runnersList.ToTaskAgents();
+
+            if (string.IsNullOrEmpty(agentName))
+            {
+                return agents;
+            }
+
+            return agents.Where(x => string.Equals(x.Name, agentName, StringComparison.OrdinalIgnoreCase)).ToList();
+        }
+
+        public async Task<List<TaskAgentPool>> GetRunnerGroupsAsync(string githubUrl, string githubToken)
+        {
+            var githubApiUrl = "";
+            var gitHubUrlBuilder = new UriBuilder(githubUrl);
+            var path = gitHubUrlBuilder.Path.Split('/', '\\', StringSplitOptions.RemoveEmptyEntries);
+            if (path.Length == 1)
+            {
+                // org runner
+                if (UrlUtil.IsHostedServer(gitHubUrlBuilder))
+                {
+                    githubApiUrl = $"{gitHubUrlBuilder.Scheme}://api.{gitHubUrlBuilder.Host}/orgs/{path[0]}/actions/runner-groups";
+                }
+                else
+                {
+                    githubApiUrl = $"{gitHubUrlBuilder.Scheme}://{gitHubUrlBuilder.Host}/api/v3/orgs/{path[0]}/actions/runner-groups";
+                }
+            }
+            else if (path.Length == 2)
+            {
+                // repo or enterprise runner.
+                if (!string.Equals(path[0], "enterprises", StringComparison.OrdinalIgnoreCase))
+                {
+                    return null;
+                }
+
+                if (UrlUtil.IsHostedServer(gitHubUrlBuilder))
+                {
+                    githubApiUrl = $"{gitHubUrlBuilder.Scheme}://api.{gitHubUrlBuilder.Host}/{path[0]}/{path[1]}/actions/runner-groups";
+                }
+                else
+                {
+                    githubApiUrl = $"{gitHubUrlBuilder.Scheme}://{gitHubUrlBuilder.Host}/api/v3/{path[0]}/{path[1]}/actions/runner-groups";
+                }
+            }
+            else
+            {
+                throw new ArgumentException($"'{githubUrl}' should point to an org or enterprise.");
+            }
+
+            var agentPools = await RetryRequest<RunnerGroupList>(githubApiUrl, githubToken, RequestType.Get, 3, "Failed to get agents pools");
+
+            return agentPools?.ToAgentPoolList();
+        }
+
+        public async Task<DistributedTask.WebApi.Runner> AddRunnerAsync(int runnerGroupId, TaskAgent agent, string githubUrl, string githubToken, string publicKey)
+        {
+            var gitHubUrlBuilder = new UriBuilder(githubUrl);
+            var path = gitHubUrlBuilder.Path.Split('/', '\\', StringSplitOptions.RemoveEmptyEntries);
+            string githubApiUrl;
+            if (UrlUtil.IsHostedServer(gitHubUrlBuilder))
+            {
+                githubApiUrl = $"{gitHubUrlBuilder.Scheme}://api.{gitHubUrlBuilder.Host}/actions/runners/register";
+            }
+            else
+            {
+                githubApiUrl = $"{gitHubUrlBuilder.Scheme}://{gitHubUrlBuilder.Host}/api/v3/actions/runners/register";
+            }
+
+            var bodyObject = new Dictionary<string, Object>()
+                    {
+                        {"url", githubUrl},
+                        {"group_id", runnerGroupId},
+                        {"name", agent.Name},
+                        {"version", agent.Version},
+                        {"updates_disabled", agent.DisableUpdate},
+                        {"ephemeral", agent.Ephemeral},
+                        {"labels", agent.Labels},
+                        {"public_key", publicKey}
+                    };
+
+            var body = new StringContent(StringUtil.ConvertToJson(bodyObject), null, "application/json");
+
+            return await RetryRequest<DistributedTask.WebApi.Runner>(githubApiUrl, githubToken, RequestType.Post, 3, "Failed to add agent", body);
+        }
+
+        private async Task<T> RetryRequest<T>(string githubApiUrl, string githubToken, RequestType requestType, int maxRetryAttemptsCount = 5, string errorMessage = null, StringContent body = null)
+        {
+            int retry = 0;
+            while (true)
+            {
+                retry++;
+                using (var httpClientHandler = HostContext.CreateHttpClientHandler())
+                using (var httpClient = new HttpClient(httpClientHandler))
+                {
+                    httpClient.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("RemoteAuth", githubToken);
+                    httpClient.DefaultRequestHeaders.UserAgent.AddRange(HostContext.UserAgents);
+
+                    var responseStatus = System.Net.HttpStatusCode.OK;
+                    try
+                    {
+                        HttpResponseMessage response = null;
+                        if (requestType == RequestType.Get)
+                        {
+                            response = await httpClient.GetAsync(githubApiUrl);
+                        }
+                        else
+                        {
+                            response = await httpClient.PostAsync(githubApiUrl, body);
+                        }
+
+                        if (response != null)
+                        {
+                            responseStatus = response.StatusCode;
+                            var githubRequestId = GetGitHubRequestId(response.Headers);
+
+                            if (response.IsSuccessStatusCode)
+                            {
+                                Trace.Info($"Http response code: {response.StatusCode} from '{requestType.ToString()} {githubApiUrl}' ({githubRequestId})");
+                                var jsonResponse = await response.Content.ReadAsStringAsync();
+                                return StringUtil.ConvertFromJson<T>(jsonResponse);
+                            }
+                            else
+                            {
+                                _term.WriteError($"Http response code: {response.StatusCode} from '{requestType.ToString()} {githubApiUrl}' (Request Id: {githubRequestId})");
+                                var errorResponse = await response.Content.ReadAsStringAsync();
+                                _term.WriteError(errorResponse);
+                                response.EnsureSuccessStatusCode();
+                            }
+                        }
+
+                    }
+                    catch (Exception ex) when (retry < maxRetryAttemptsCount && responseStatus != System.Net.HttpStatusCode.NotFound)
+                    {
+                        Trace.Error($"{errorMessage} -- Atempt: {retry}");
+                        Trace.Error(ex);
+                    }
+                }
+                var backOff = BackoffTimerHelper.GetRandomBackoff(TimeSpan.FromSeconds(1), TimeSpan.FromSeconds(5));
+                Trace.Info($"Retrying in {backOff.Seconds} seconds");
+                await Task.Delay(backOff);
+            }
+        }
+
+        public string GetGitHubRequestId(HttpResponseHeaders headers)
+        {
+            if (headers.TryGetValues("x-github-request-id", out var headerValues))
+            {
+                return headerValues.FirstOrDefault();
+            }
+            return string.Empty;
+        }
+    }
+}

src/Runner.Common/RunnerService.cs

@@ -68,6 +68,19 @@ namespace GitHub.Runner.Common
             throw new InvalidOperationException(nameof(EstablishVssConnection));
         }
 
+        protected async Task RetryRequest(Func<Task> func,
+            CancellationToken cancellationToken,
+            int maxRetryAttemptsCount = 5
+        )
+        {
+            async Task<Unit> wrappedFunc()
+            {
+                await func();
+                return Unit.Value;
+            }
+            await RetryRequest<Unit>(wrappedFunc, cancellationToken, maxRetryAttemptsCount);
+        }
+        
         protected async Task<T> RetryRequest<T>(Func<Task<T>> func,
             CancellationToken cancellationToken,
             int maxRetryAttemptsCount = 5
@@ -85,7 +98,7 @@ namespace GitHub.Runner.Common
                 // TODO: Add handling of non-retriable exceptions: https://github.com/github/actions-broker/issues/122
                 catch (Exception ex) when (retryCount < maxRetryAttemptsCount)
                 {
-                    Trace.Error("Catch exception during get full job message");
+                    Trace.Error("Catch exception during request");
                     Trace.Error(ex);
                     var backOff = BackoffTimerHelper.GetRandomBackoff(TimeSpan.FromSeconds(5), TimeSpan.FromSeconds(15));
                     Trace.Warning($"Back off {backOff.TotalSeconds} seconds before next retry. {maxRetryAttemptsCount - retryCount} attempt left.");

src/Runner.Common/StdoutTraceListener.cs

@@ -1,8 +1,8 @@
-using GitHub.Runner.Sdk;
 using System;
 using System.Diagnostics;
 using System.Globalization;
 using System.IO;
+using GitHub.Runner.Sdk;
 
 namespace GitHub.Runner.Common
 {
@@ -24,9 +24,16 @@ namespace GitHub.Runner.Common
                 return;
             }
 
-            WriteHeader(source, eventType, id);
-            WriteLine(message);
-            WriteFooter(eventCache);
+            if (!string.IsNullOrEmpty(message))
+            {
+                var messageLines = message.Split(Environment.NewLine);
+                foreach (var messageLine in messageLines)
+                {
+                    WriteHeader(source, eventType, id);
+                    WriteLine(messageLine);
+                    WriteFooter(eventCache);
+                }
+            }
         }
 
         internal bool IsEnabled(TraceOptions opts)
@@ -86,5 +93,4 @@ namespace GitHub.Runner.Common
             IndentLevel--;
         }
     }
-}
-
+}

src/Runner.Common/Unit.cs

@@ -0,0 +1,8 @@
+// Represents absence of value.
+namespace GitHub.Runner.Common
+{
+    public readonly struct Unit
+    {
+        public static readonly Unit Value = default;
+    }
+}

src/Runner.Common/Util/MessageUtil.cs

@@ -0,0 +1,14 @@
+namespace GitHub.Runner.Common.Util
+{
+    using System;
+    using GitHub.DistributedTask.WebApi;
+
+    public static class MessageUtil
+    {
+        public static bool IsRunServiceJob(string messageType)
+        {
+            return string.Equals(messageType, JobRequestMessageTypes.RunnerJobRequest, StringComparison.OrdinalIgnoreCase);
+        }
+    }
+}
+

src/Runner.Listener/BrokerMessageListener.cs

@@ -0,0 +1,209 @@
+using System;
+using System.Collections.Generic;
+using System.Diagnostics;
+using System.IO;
+using System.Runtime.InteropServices;
+using System.Security.Cryptography;
+using System.Text;
+using System.Threading;
+using System.Threading.Tasks;
+using GitHub.DistributedTask.WebApi;
+using GitHub.Runner.Common;
+using GitHub.Runner.Listener.Configuration;
+using GitHub.Runner.Sdk;
+using GitHub.Services.Common;
+using GitHub.Runner.Common.Util;
+using GitHub.Services.OAuth;
+
+namespace GitHub.Runner.Listener
+{
+    public sealed class BrokerMessageListener : RunnerService, IMessageListener
+    {
+        private RunnerSettings _settings;
+        private ITerminal _term;
+        private TimeSpan _getNextMessageRetryInterval;
+        private TaskAgentStatus runnerStatus = TaskAgentStatus.Online;
+        private CancellationTokenSource _getMessagesTokenSource;
+        private IBrokerServer _brokerServer;
+
+        public override void Initialize(IHostContext hostContext)
+        {
+            base.Initialize(hostContext);
+
+            _term = HostContext.GetService<ITerminal>();
+            _brokerServer = HostContext.GetService<IBrokerServer>();
+        }
+
+        public async Task<Boolean> CreateSessionAsync(CancellationToken token)
+        {
+            await RefreshBrokerConnection();
+            return await Task.FromResult(true);
+        }
+
+        public async Task DeleteSessionAsync()
+        {
+            await Task.CompletedTask;
+        }
+
+        public void OnJobStatus(object sender, JobStatusEventArgs e)
+        {
+            Trace.Info("Received job status event. JobState: {0}", e.Status);
+            runnerStatus = e.Status;
+            try
+            {
+                _getMessagesTokenSource?.Cancel();
+            }
+            catch (ObjectDisposedException)
+            {
+                Trace.Info("_getMessagesTokenSource is already disposed.");
+            }
+        }
+
+        public async Task<TaskAgentMessage> GetNextMessageAsync(CancellationToken token)
+        {
+            bool encounteringError = false;
+            int continuousError = 0;
+            Stopwatch heartbeat = new();
+            heartbeat.Restart();
+            var maxRetryCount = 10;
+
+            while (true)
+            {
+                TaskAgentMessage message = null;
+                _getMessagesTokenSource = CancellationTokenSource.CreateLinkedTokenSource(token);
+                try
+                {
+                    message = await _brokerServer.GetRunnerMessageAsync(_getMessagesTokenSource.Token, runnerStatus, BuildConstants.RunnerPackage.Version);
+
+                    if (message == null)
+                    {
+                        continue;
+                    }
+
+                    return message;
+                }
+                catch (OperationCanceledException) when (_getMessagesTokenSource.Token.IsCancellationRequested && !token.IsCancellationRequested)
+                {
+                    Trace.Info("Get messages has been cancelled using local token source. Continue to get messages with new status.");
+                    continue;
+                }
+                catch (OperationCanceledException) when (token.IsCancellationRequested)
+                {
+                    Trace.Info("Get next message has been cancelled.");
+                    throw;
+                }
+                catch (TaskAgentAccessTokenExpiredException)
+                {
+                    Trace.Info("Runner OAuth token has been revoked. Unable to pull message.");
+                    throw;
+                }
+                catch (AccessDeniedException e) when (e.InnerException is InvalidTaskAgentVersionException)
+                {
+                    throw;
+                }
+                catch (Exception ex)
+                {
+                    Trace.Error("Catch exception during get next message.");
+                    Trace.Error(ex);
+
+                    if (!IsGetNextMessageExceptionRetriable(ex))
+                    {
+                        throw;
+                    }
+                    else
+                    {
+                        continuousError++;
+                        //retry after a random backoff to avoid service throttling
+                        //in case of there is a service error happened and all agents get kicked off of the long poll and all agent try to reconnect back at the same time.
+                        if (continuousError <= 5)
+                        {
+                            // random backoff [15, 30]
+                            _getNextMessageRetryInterval = BackoffTimerHelper.GetRandomBackoff(TimeSpan.FromSeconds(15), TimeSpan.FromSeconds(30), _getNextMessageRetryInterval);
+                        }
+                        else if (continuousError >= maxRetryCount)
+                        {
+                            throw;
+                        }
+                        else
+                        {
+                            // more aggressive backoff [30, 60]
+                            _getNextMessageRetryInterval = BackoffTimerHelper.GetRandomBackoff(TimeSpan.FromSeconds(30), TimeSpan.FromSeconds(60), _getNextMessageRetryInterval);
+                        }
+
+                        if (!encounteringError)
+                        {
+                            //print error only on the first consecutive error
+                            _term.WriteError($"{DateTime.UtcNow:u}: Runner connect error: {ex.Message}. Retrying until reconnected.");
+                            encounteringError = true;
+                        }
+
+                        // re-create VssConnection before next retry
+                        await RefreshBrokerConnection();
+
+                        Trace.Info("Sleeping for {0} seconds before retrying.", _getNextMessageRetryInterval.TotalSeconds);
+                        await HostContext.Delay(_getNextMessageRetryInterval, token);
+                    }
+                }
+                finally
+                {
+                    _getMessagesTokenSource.Dispose();
+                }
+
+                if (message == null)
+                {
+                    if (heartbeat.Elapsed > TimeSpan.FromMinutes(30))
+                    {
+                        Trace.Info($"No message retrieved within last 30 minutes.");
+                        heartbeat.Restart();
+                    }
+                    else
+                    {
+                        Trace.Verbose($"No message retrieved.");
+                    }
+
+                    continue;
+                }
+
+                Trace.Info($"Message '{message.MessageId}' received.");
+            }
+        }
+
+        public async Task DeleteMessageAsync(TaskAgentMessage message)
+        {
+            await Task.CompletedTask;
+        }
+
+        private bool IsGetNextMessageExceptionRetriable(Exception ex)
+        {
+            if (ex is TaskAgentNotFoundException ||
+                ex is TaskAgentPoolNotFoundException ||
+                ex is TaskAgentSessionExpiredException ||
+                ex is AccessDeniedException ||
+                ex is VssUnauthorizedException)
+            {
+                Trace.Info($"Non-retriable exception: {ex.Message}");
+                return false;
+            }
+            else
+            {
+                Trace.Info($"Retriable exception: {ex.Message}");
+                return true;
+            }
+        }
+
+        private async Task RefreshBrokerConnection()
+        {
+            var configManager = HostContext.GetService<IConfigurationManager>();
+            _settings = configManager.LoadSettings();
+
+            if (_settings.ServerUrlV2 == null)
+            {
+                throw new InvalidOperationException("ServerUrlV2 is not set");
+            }
+
+            var credMgr = HostContext.GetService<ICredentialManager>();
+            VssCredentials creds = credMgr.LoadCredentials();
+            await _brokerServer.ConnectAsync(new Uri(_settings.ServerUrlV2), creds);
+        }
+    }
+}

src/Runner.Listener/CommandSettings.cs

@@ -56,7 +56,8 @@ namespace GitHub.Runner.Listener
                 new string[]
                 {
                     Constants.Runner.CommandLine.Args.Token,
-                    Constants.Runner.CommandLine.Args.PAT
+                    Constants.Runner.CommandLine.Args.PAT,
+                    Constants.Runner.CommandLine.Flags.Local
                 },
             // Valid run flags and args
             [Constants.Runner.CommandLine.Commands.Run] =
@@ -86,6 +87,7 @@ namespace GitHub.Runner.Listener
         public bool Help => TestFlag(Constants.Runner.CommandLine.Flags.Help);
         public bool Unattended => TestFlag(Constants.Runner.CommandLine.Flags.Unattended);
         public bool Version => TestFlag(Constants.Runner.CommandLine.Flags.Version);
+        public bool RemoveLocalConfig => TestFlag(Constants.Runner.CommandLine.Flags.Local);
 
         // Keep this around since customers still relies on it
         public bool RunOnce => TestFlag(Constants.Runner.CommandLine.Flags.Once);

src/Runner.Listener/Configuration/ConfigurationManager.cs

@@ -1,10 +1,3 @@
-using GitHub.DistributedTask.WebApi;
-using GitHub.Runner.Common;
-using GitHub.Runner.Common.Util;
-using GitHub.Runner.Sdk;
-using GitHub.Services.Common;
-using GitHub.Services.Common.Internal;
-using GitHub.Services.OAuth;
 using System;
 using System.Collections.Generic;
 using System.Linq;
@@ -14,6 +7,13 @@ using System.Runtime.InteropServices;
 using System.Security.Cryptography;
 using System.Text;
 using System.Threading.Tasks;
+using GitHub.DistributedTask.WebApi;
+using GitHub.Runner.Common;
+using GitHub.Runner.Common.Util;
+using GitHub.Runner.Sdk;
+using GitHub.Services.Common;
+using GitHub.Services.Common.Internal;
+using GitHub.Services.OAuth;
 
 namespace GitHub.Runner.Listener.Configuration
 {
@@ -31,12 +31,14 @@ namespace GitHub.Runner.Listener.Configuration
     {
         private IConfigurationStore _store;
         private IRunnerServer _runnerServer;
+        private IRunnerDotcomServer _dotcomServer;
         private ITerminal _term;
 
         public override void Initialize(IHostContext hostContext)
         {
             base.Initialize(hostContext);
             _runnerServer = HostContext.GetService<IRunnerServer>();
+            _dotcomServer = HostContext.GetService<IRunnerDotcomServer>();
             Trace.Verbose("Creating _store");
             _store = hostContext.GetService<IConfigurationStore>();
             Trace.Verbose("store created");
@@ -113,6 +115,7 @@ namespace GitHub.Runner.Listener.Configuration
             ICredentialProvider credProvider = null;
             VssCredentials creds = null;
             _term.WriteSection("Authentication");
+            string registerToken = string.Empty;
             while (true)
             {
                 // When testing against a dev deployment of Actions Service, set this environment variable
@@ -130,9 +133,11 @@ namespace GitHub.Runner.Listener.Configuration
                 else
                 {
                     runnerSettings.GitHubUrl = inputUrl;
-                    var registerToken = await GetRunnerTokenAsync(command, inputUrl, "registration");
+                    registerToken = await GetRunnerTokenAsync(command, inputUrl, "registration");
                     GitHubAuthResult authResult = await GetTenantCredential(inputUrl, registerToken, Constants.RunnerEvent.Register);
                     runnerSettings.ServerUrl = authResult.TenantUrl;
+                    runnerSettings.UseV2Flow = authResult.UseV2Flow;
+                    _term.WriteLine($"Using V2 flow: {runnerSettings.UseV2Flow}");
                     creds = authResult.ToVssCredentials();
                     Trace.Info("cred retrieved via GitHub auth");
                 }
@@ -176,9 +181,11 @@ namespace GitHub.Runner.Listener.Configuration
             // We want to use the native CSP of the platform for storage, so we use the RSACSP directly
             RSAParameters publicKey;
             var keyManager = HostContext.GetService<IRSAKeyManager>();
+            string publicKeyXML;
             using (var rsa = keyManager.CreateKey())
             {
                 publicKey = rsa.ExportParameters(false);
+                publicKeyXML = rsa.ToXmlString(includePrivateParameters: false);
             }
 
             _term.WriteSection("Runner Registration");
@@ -186,9 +193,17 @@ namespace GitHub.Runner.Listener.Configuration
             // If we have more than one runner group available, allow the user to specify which one to be added into
             string poolName = null;
             TaskAgentPool agentPool = null;
-            List<TaskAgentPool> agentPools = await _runnerServer.GetAgentPoolsAsync();
-            TaskAgentPool defaultPool = agentPools?.Where(x => x.IsInternal).FirstOrDefault();
+            List<TaskAgentPool> agentPools;
+            if (runnerSettings.UseV2Flow)
+            {
+                agentPools = await _dotcomServer.GetRunnerGroupsAsync(runnerSettings.GitHubUrl, registerToken);
+            }
+            else
+            {
+                agentPools = await _runnerServer.GetAgentPoolsAsync();
+            }
 
+            TaskAgentPool defaultPool = agentPools?.Where(x => x.IsInternal).FirstOrDefault();
             if (agentPools?.Where(x => !x.IsHosted).Count() > 0)
             {
                 poolName = command.GetRunnerGroupName(defaultPool?.Name);
@@ -226,8 +241,16 @@ namespace GitHub.Runner.Listener.Configuration
 
                 var userLabels = command.GetLabels();
                 _term.WriteLine();
+                List<TaskAgent> agents;
+                if (runnerSettings.UseV2Flow)
+                {
+                    agents = await _dotcomServer.GetRunnersAsync(runnerSettings.PoolId, runnerSettings.GitHubUrl, registerToken, runnerSettings.AgentName);
+                }
+                else
+                {
+                    agents = await _runnerServer.GetAgentsAsync(runnerSettings.PoolId, runnerSettings.AgentName);
+                }
 
-                var agents = await _runnerServer.GetAgentsAsync(runnerSettings.PoolId, runnerSettings.AgentName);
                 Trace.Verbose("Returns {0} agents", agents.Count);
                 agent = agents.FirstOrDefault();
                 if (agent != null)
@@ -274,7 +297,23 @@ namespace GitHub.Runner.Listener.Configuration
 
                     try
                     {
-                        agent = await _runnerServer.AddAgentAsync(runnerSettings.PoolId, agent);
+                        if (runnerSettings.UseV2Flow)
+                        {
+                            var runner = await _dotcomServer.AddRunnerAsync(runnerSettings.PoolId, agent, runnerSettings.GitHubUrl, registerToken, publicKeyXML);
+                            runnerSettings.ServerUrlV2 = runner.RunnerAuthorization.ServerUrl;
+
+                            agent.Id = runner.Id;
+                            agent.Authorization = new TaskAgentAuthorization()
+                            {
+                                AuthorizationUrl = runner.RunnerAuthorization.AuthorizationUrl,
+                                ClientId = new Guid(runner.RunnerAuthorization.ClientId)
+                            };
+                        }
+                        else
+                        {
+                            agent = await _runnerServer.AddAgentAsync(runnerSettings.PoolId, agent);
+                        }
+
                         if (command.DisableUpdate &&
                             command.DisableUpdate != agent.DisableUpdate)
                         {
@@ -325,24 +364,28 @@ namespace GitHub.Runner.Listener.Configuration
             }
 
             // Testing agent connection, detect any potential connection issue, like local clock skew that cause OAuth token expired.
-            var credMgr = HostContext.GetService<ICredentialManager>();
-            VssCredentials credential = credMgr.LoadCredentials();
-            try
+
+            if (!runnerSettings.UseV2Flow)
             {
-                await _runnerServer.ConnectAsync(new Uri(runnerSettings.ServerUrl), credential);
-                // ConnectAsync() hits _apis/connectionData which is an anonymous endpoint
-                // Need to hit an authenticate endpoint to trigger OAuth token exchange.
-                await _runnerServer.GetAgentPoolsAsync();
-                _term.WriteSuccessMessage("Runner connection is good");
-            }
-            catch (VssOAuthTokenRequestException ex) when (ex.Message.Contains("Current server time is"))
-            {
-                // there are two exception messages server send that indicate clock skew.
-                // 1. The bearer token expired on {jwt.ValidTo}. Current server time is {DateTime.UtcNow}.
-                // 2. The bearer token is not valid until {jwt.ValidFrom}. Current server time is {DateTime.UtcNow}.
-                Trace.Error("Catch exception during test agent connection.");
-                Trace.Error(ex);
-                throw new Exception("The local machine's clock may be out of sync with the server time by more than five minutes. Please sync your clock with your domain or internet time and try again.");
+                var credMgr = HostContext.GetService<ICredentialManager>();
+                VssCredentials credential = credMgr.LoadCredentials();
+                try
+                {
+                    await _runnerServer.ConnectAsync(new Uri(runnerSettings.ServerUrl), credential);
+                    // ConnectAsync() hits _apis/connectionData which is an anonymous endpoint
+                    // Need to hit an authenticate endpoint to trigger OAuth token exchange.
+                    await _runnerServer.GetAgentPoolsAsync();
+                    _term.WriteSuccessMessage("Runner connection is good");
+                }
+                catch (VssOAuthTokenRequestException ex) when (ex.Message.Contains("Current server time is"))
+                {
+                    // there are two exception messages server send that indicate clock skew.
+                    // 1. The bearer token expired on {jwt.ValidTo}. Current server time is {DateTime.UtcNow}.
+                    // 2. The bearer token is not valid until {jwt.ValidFrom}. Current server time is {DateTime.UtcNow}.
+                    Trace.Error("Catch exception during test agent connection.");
+                    Trace.Error(ex);
+                    throw new Exception("The local machine's clock may be out of sync with the server time by more than five minutes. Please sync your clock with your domain or internet time and try again.");
+                }
             }
 
             _term.WriteSection("Runner settings");
@@ -636,7 +679,7 @@ namespace GitHub.Runner.Listener.Configuration
             }
 
             int retryCount = 0;
-            while(retryCount < 3)
+            while (retryCount < 3)
             {
                 using (var httpClientHandler = HostContext.CreateHttpClientHandler())
                 using (var httpClient = new HttpClient(httpClientHandler))
@@ -646,28 +689,29 @@ namespace GitHub.Runner.Listener.Configuration
                     httpClient.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("basic", base64EncodingToken);
                     httpClient.DefaultRequestHeaders.UserAgent.AddRange(HostContext.UserAgents);
                     httpClient.DefaultRequestHeaders.Accept.ParseAdd("application/vnd.github.v3+json");
-                    
+
                     var responseStatus = System.Net.HttpStatusCode.OK;
                     try
                     {
                         var response = await httpClient.PostAsync(githubApiUrl, new StringContent(string.Empty));
                         responseStatus = response.StatusCode;
+                        var githubRequestId = _dotcomServer.GetGitHubRequestId(response.Headers);
 
                         if (response.IsSuccessStatusCode)
                         {
-                            Trace.Info($"Http response code: {response.StatusCode} from 'POST {githubApiUrl}'");
+                            Trace.Info($"Http response code: {response.StatusCode} from 'POST {githubApiUrl}' ({githubRequestId})");
                             var jsonResponse = await response.Content.ReadAsStringAsync();
                             return StringUtil.ConvertFromJson<GitHubRunnerRegisterToken>(jsonResponse);
                         }
                         else
                         {
-                            _term.WriteError($"Http response code: {response.StatusCode} from 'POST {githubApiUrl}'");
+                            _term.WriteError($"Http response code: {response.StatusCode} from 'POST {githubApiUrl}' (Request Id: {githubRequestId})");
                             var errorResponse = await response.Content.ReadAsStringAsync();
                             _term.WriteError(errorResponse);
                             response.EnsureSuccessStatusCode();
                         }
                     }
-                    catch(Exception ex) when (retryCount < 2 && responseStatus != System.Net.HttpStatusCode.NotFound)
+                    catch (Exception ex) when (retryCount < 2 && responseStatus != System.Net.HttpStatusCode.NotFound)
                     {
                         retryCount++;
                         Trace.Error($"Failed to get JIT runner token -- Atempt: {retryCount}");
@@ -714,22 +758,23 @@ namespace GitHub.Runner.Listener.Configuration
                     {
                         var response = await httpClient.PostAsync(githubApiUrl, new StringContent(StringUtil.ConvertToJson(bodyObject), null, "application/json"));
                         responseStatus = response.StatusCode;
+                        var githubRequestId = _dotcomServer.GetGitHubRequestId(response.Headers);
 
-                        if(response.IsSuccessStatusCode)
+                        if (response.IsSuccessStatusCode)
                         {
-                            Trace.Info($"Http response code: {response.StatusCode} from 'POST {githubApiUrl}'");
+                            Trace.Info($"Http response code: {response.StatusCode} from 'POST {githubApiUrl}' ({githubRequestId})");
                             var jsonResponse = await response.Content.ReadAsStringAsync();
                             return StringUtil.ConvertFromJson<GitHubAuthResult>(jsonResponse);
                         }
                         else
                         {
-                            _term.WriteError($"Http response code: {response.StatusCode} from 'POST {githubApiUrl}'");
+                            _term.WriteError($"Http response code: {response.StatusCode} from 'POST {githubApiUrl}' (Request Id: {githubRequestId})");
                             var errorResponse = await response.Content.ReadAsStringAsync();
                             _term.WriteError(errorResponse);
                             response.EnsureSuccessStatusCode();
                         }
                     }
-                    catch(Exception ex) when (retryCount < 2 && responseStatus != System.Net.HttpStatusCode.NotFound)
+                    catch (Exception ex) when (retryCount < 2 && responseStatus != System.Net.HttpStatusCode.NotFound)
                     {
                         retryCount++;
                         Trace.Error($"Failed to get tenant credentials -- Atempt: {retryCount}");

src/Runner.Listener/Configuration/CredentialManager.cs

@@ -1,4 +1,4 @@
-using System;
+using System;
 using System.Collections.Generic;
 using System.Runtime.Serialization;
 using GitHub.Runner.Common;
@@ -20,8 +20,8 @@ namespace GitHub.Runner.Listener.Configuration
     {
         public static readonly Dictionary<string, Type> CredentialTypes = new(StringComparer.OrdinalIgnoreCase)
         {
-            { Constants.Configuration.OAuth, typeof(OAuthCredential)},
-            { Constants.Configuration.OAuthAccessToken, typeof(OAuthAccessTokenCredential)},
+            { Constants.Configuration.OAuth, typeof(OAuthCredential) },
+            { Constants.Configuration.OAuthAccessToken, typeof(OAuthAccessTokenCredential) },
         };
 
         public ICredentialProvider GetCredentialProvider(string credType)
@@ -93,6 +93,9 @@ namespace GitHub.Runner.Listener.Configuration
         [DataMember(Name = "token")]
         public string Token { get; set; }
 
+        [DataMember(Name = "use_v2_flow")]
+        public bool UseV2Flow { get; set; }
+
         public VssCredentials ToVssCredentials()
         {
             ArgUtil.NotNullOrEmpty(TokenSchema, nameof(TokenSchema));

src/Runner.Listener/InternalsVisibleTo.cs

@@ -0,0 +1,3 @@
+using System.Runtime.CompilerServices;
+
+[assembly: InternalsVisibleTo("Test")]

src/Runner.Listener/JobDispatcher.cs

@@ -7,6 +7,7 @@ using System.Text;
 using System.Text.RegularExpressions;
 using System.Threading;
 using System.Threading.Tasks;
+using GitHub.DistributedTask.Pipelines;
 using GitHub.DistributedTask.WebApi;
 using GitHub.Runner.Common;
 using GitHub.Runner.Common.Util;
@@ -58,6 +59,8 @@ namespace GitHub.Runner.Listener
 
         public event EventHandler<JobStatusEventArgs> JobStatus;
 
+        private bool _isRunServiceJob;
+
         public override void Initialize(IHostContext hostContext)
         {
             base.Initialize(hostContext);
@@ -86,6 +89,8 @@ namespace GitHub.Runner.Listener
         {
             Trace.Info($"Job request {jobRequestMessage.RequestId} for plan {jobRequestMessage.Plan.PlanId} job {jobRequestMessage.JobId} received.");
 
+            _isRunServiceJob = MessageUtil.IsRunServiceJob(jobRequestMessage.MessageType);
+
             WorkerDispatcher currentDispatch = null;
             if (_jobDispatchedQueue.Count > 0)
             {
@@ -239,6 +244,13 @@ namespace GitHub.Runner.Listener
                     return;
                 }
 
+                if (this._isRunServiceJob)
+                {
+                    Trace.Error($"We are not yet checking the state of jobrequest {jobDispatch.JobId} status. Cancel running worker right away.");
+                    jobDispatch.WorkerCancellationTokenSource.Cancel();
+                    return;
+                }
+
                 // based on the current design, server will only send one job for a given runner at a time.
                 // if the runner received a new job request while a previous job request is still running, this typically indicates two situations
                 // 1. a runner bug caused a server and runner mismatch on the state of the job request, e.g. the runner didn't renew the jobrequest
@@ -367,9 +379,11 @@ namespace GitHub.Runner.Listener
                     long requestId = message.RequestId;
                     Guid lockToken = Guid.Empty; // lockToken has never been used, keep this here of compat
 
+                    var systemConnection = message.Resources.Endpoints.SingleOrDefault(x => string.Equals(x.Name, WellKnownServiceEndpointNames.SystemVssConnection, StringComparison.OrdinalIgnoreCase));
+
                     // start renew job request
                     Trace.Info($"Start renew job request {requestId} for job {message.JobId}.");
-                    Task renewJobRequest = RenewJobRequestAsync(_poolId, requestId, lockToken, orchestrationId, firstJobRequestRenewed, lockRenewalTokenSource.Token);
+                    Task renewJobRequest = RenewJobRequestAsync(message, systemConnection, _poolId, requestId, lockToken, orchestrationId, firstJobRequestRenewed, lockRenewalTokenSource.Token);
 
                     // wait till first renew succeed or job request is cancelled
                     // not even start worker if the first renew fail
@@ -426,7 +440,7 @@ namespace GitHub.Runner.Listener
                                                 {
                                                     workerOutput.Add(stdout.Data);
                                                 }
-                                                
+
                                                 if (printToStdout)
                                                 {
                                                     term.WriteLine(stdout.Data, skipTracing: true);
@@ -508,7 +522,6 @@ namespace GitHub.Runner.Listener
 
                         // we get first jobrequest renew succeed and start the worker process with the job message.
                         // send notification to machine provisioner.
-                        var systemConnection = message.Resources.Endpoints.SingleOrDefault(x => string.Equals(x.Name, WellKnownServiceEndpointNames.SystemVssConnection, StringComparison.OrdinalIgnoreCase));
                         var accessToken = systemConnection?.Authorization?.Parameters["AccessToken"];
                         notification.JobStarted(message.JobId, accessToken, systemConnection.Url);
 
@@ -531,11 +544,8 @@ namespace GitHub.Runner.Listener
                                     detailInfo = string.Join(Environment.NewLine, workerOutput);
                                     Trace.Info($"Return code {returnCode} indicate worker encounter an unhandled exception or app crash, attach worker stdout/stderr to JobRequest result.");
 
-                                    var jobServer = HostContext.GetService<IJobServer>();
-                                    VssCredentials jobServerCredential = VssUtil.GetVssCredential(systemConnection);
-                                    VssConnection jobConnection = VssUtil.CreateConnection(systemConnection.Url, jobServerCredential);
-                                    await jobServer.ConnectAsync(jobConnection);
 
+                                    var jobServer = await InitializeJobServerAsync(systemConnection);
                                     await LogWorkerProcessUnhandledException(jobServer, message, detailInfo);
 
                                     // Go ahead to finish the job with result 'Failed' if the STDERR from worker is System.IO.IOException, since it typically means we are running out of disk space.
@@ -675,9 +685,128 @@ namespace GitHub.Runner.Listener
             }
         }
 
-        public async Task RenewJobRequestAsync(int poolId, long requestId, Guid lockToken, string orchestrationId, TaskCompletionSource<int> firstJobRequestRenewed, CancellationToken token)
+        internal async Task RenewJobRequestAsync(Pipelines.AgentJobRequestMessage message, ServiceEndpoint systemConnection, int poolId, long requestId, Guid lockToken, string orchestrationId, TaskCompletionSource<int> firstJobRequestRenewed, CancellationToken token)
+        {
+            if (this._isRunServiceJob)
+            {
+                var runServer = await GetRunServerAsync(systemConnection);
+                await RenewJobRequestAsync(runServer, message.Plan.PlanId, message.JobId, firstJobRequestRenewed, token);
+            }
+            else
+            {
+                var runnerServer = HostContext.GetService<IRunnerServer>();
+                await RenewJobRequestAsync(runnerServer, poolId, requestId, lockToken, orchestrationId, firstJobRequestRenewed, token);
+            }
+        }
+
+        private async Task RenewJobRequestAsync(IRunServer runServer, Guid planId, Guid jobId, TaskCompletionSource<int> firstJobRequestRenewed, CancellationToken token)
+        {
+            TaskAgentJobRequest request = null;
+            int firstRenewRetryLimit = 5;
+            int encounteringError = 0;
+
+            // renew lock during job running.
+            // stop renew only if cancellation token for lock renew task been signal or exception still happen after retry.
+            while (!token.IsCancellationRequested)
+            {
+                try
+                {
+                    var renewResponse = await runServer.RenewJobAsync(planId, jobId, token);
+                    Trace.Info($"Successfully renew job {jobId}, job is valid till {renewResponse.LockedUntil}");
+
+                    if (!firstJobRequestRenewed.Task.IsCompleted)
+                    {
+                        // fire first renew succeed event.
+                        firstJobRequestRenewed.TrySetResult(0);
+                    }
+
+                    if (encounteringError > 0)
+                    {
+                        encounteringError = 0;
+                        HostContext.WritePerfCounter("JobRenewRecovered");
+                    }
+
+                    // renew again after 60 sec delay
+                    await HostContext.Delay(TimeSpan.FromSeconds(60), token);
+                }
+                catch (TaskOrchestrationJobNotFoundException)
+                {
+                    // no need for retry. the job is not valid anymore.
+                    Trace.Info($"TaskAgentJobNotFoundException received when renew job {jobId}, job is no longer valid, stop renew job request.");
+                    return;
+                }
+                catch (OperationCanceledException) when (token.IsCancellationRequested)
+                {
+                    // OperationCanceledException may caused by http timeout or _lockRenewalTokenSource.Cance();
+                    // Stop renew only on cancellation token fired.
+                    Trace.Info($"job renew has been cancelled, stop renew job {jobId}.");
+                    return;
+                }
+                catch (Exception ex)
+                {
+                    Trace.Error($"Catch exception during renew runner job {jobId}.");
+                    Trace.Error(ex);
+                    encounteringError++;
+
+                    // retry
+                    TimeSpan remainingTime = TimeSpan.Zero;
+                    if (!firstJobRequestRenewed.Task.IsCompleted)
+                    {
+                        // retry 5 times every 10 sec for the first renew
+                        if (firstRenewRetryLimit-- > 0)
+                        {
+                            remainingTime = TimeSpan.FromSeconds(10);
+                        }
+                    }
+                    else
+                    {
+                        // retry till reach lockeduntil + 5 mins extra buffer.
+                        remainingTime = request.LockedUntil.Value + TimeSpan.FromMinutes(5) - DateTime.UtcNow;
+                    }
+
+                    if (remainingTime > TimeSpan.Zero)
+                    {
+                        TimeSpan delayTime;
+                        if (!firstJobRequestRenewed.Task.IsCompleted)
+                        {
+                            Trace.Info($"Retrying lock renewal for job {jobId}. The first job renew request has failed.");
+                            delayTime = BackoffTimerHelper.GetRandomBackoff(TimeSpan.FromSeconds(1), TimeSpan.FromSeconds(10));
+                        }
+                        else
+                        {
+                            Trace.Info($"Retrying lock renewal for job {jobId}. Job is valid until {request.LockedUntil.Value}.");
+                            if (encounteringError > 5)
+                            {
+                                delayTime = BackoffTimerHelper.GetRandomBackoff(TimeSpan.FromSeconds(15), TimeSpan.FromSeconds(30));
+                            }
+                            else
+                            {
+                                delayTime = BackoffTimerHelper.GetRandomBackoff(TimeSpan.FromSeconds(5), TimeSpan.FromSeconds(15));
+                            }
+                        }
+
+                        try
+                        {
+                            // back-off before next retry.
+                            await HostContext.Delay(delayTime, token);
+                        }
+                        catch (OperationCanceledException) when (token.IsCancellationRequested)
+                        {
+                            Trace.Info($"job renew has been cancelled, stop renew job {jobId}.");
+                        }
+                    }
+                    else
+                    {
+                        Trace.Info($"Lock renewal has run out of retry, stop renew lock for job {jobId}.");
+                        HostContext.WritePerfCounter("JobRenewReachLimit");
+                        return;
+                    }
+                }
+            }
+        }
+
+        private async Task RenewJobRequestAsync(IRunnerServer runnerServer, int poolId, long requestId, Guid lockToken, string orchestrationId, TaskCompletionSource<int> firstJobRequestRenewed, CancellationToken token)
         {
-            var runnerServer = HostContext.GetService<IRunnerServer>();
             TaskAgentJobRequest request = null;
             int firstRenewRetryLimit = 5;
             int encounteringError = 0;
@@ -840,90 +969,93 @@ namespace GitHub.Runner.Listener
                 var systemConnection = message.Resources.Endpoints.SingleOrDefault(x => string.Equals(x.Name, WellKnownServiceEndpointNames.SystemVssConnection));
                 ArgUtil.NotNull(systemConnection, nameof(systemConnection));
 
-                var jobServer = HostContext.GetService<IJobServer>();
-                VssCredentials jobServerCredential = VssUtil.GetVssCredential(systemConnection);
-                VssConnection jobConnection = VssUtil.CreateConnection(systemConnection.Url, jobServerCredential);
+                var server = await InitializeJobServerAsync(systemConnection);
 
-                await jobServer.ConnectAsync(jobConnection);
-
-                var timeline = await jobServer.GetTimelineAsync(message.Plan.ScopeIdentifier, message.Plan.PlanType, message.Plan.PlanId, message.Timeline.Id, CancellationToken.None);
-
-                var updatedRecords = new List<TimelineRecord>();
-                var logPages = new Dictionary<Guid, Dictionary<int, string>>();
-                var logRecords = new Dictionary<Guid, TimelineRecord>();
-                foreach (var log in logs)
+                if (server is IJobServer jobServer)
                 {
-                    var logName = Path.GetFileNameWithoutExtension(log);
-                    var logNameParts = logName.Split('_', StringSplitOptions.RemoveEmptyEntries);
-                    if (logNameParts.Length != 3)
-                    {
-                        Trace.Warning($"log file '{log}' doesn't follow naming convension 'GUID_GUID_INT'.");
-                        continue;
-                    }
-                    var logPageSeperator = logName.IndexOf('_');
-                    var logRecordId = Guid.Empty;
-                    var pageNumber = 0;
+                    var timeline = await jobServer.GetTimelineAsync(message.Plan.ScopeIdentifier, message.Plan.PlanType, message.Plan.PlanId, message.Timeline.Id, CancellationToken.None);
 
-                    if (!Guid.TryParse(logNameParts[0], out Guid timelineId) || timelineId != timeline.Id)
+                    var updatedRecords = new List<TimelineRecord>();
+                    var logPages = new Dictionary<Guid, Dictionary<int, string>>();
+                    var logRecords = new Dictionary<Guid, TimelineRecord>();
+                    foreach (var log in logs)
                     {
-                        Trace.Warning($"log file '{log}' is not belongs to current job");
-                        continue;
-                    }
-
-                    if (!Guid.TryParse(logNameParts[1], out logRecordId))
-                    {
-                        Trace.Warning($"log file '{log}' doesn't follow naming convension 'GUID_GUID_INT'.");
-                        continue;
-                    }
-
-                    if (!int.TryParse(logNameParts[2], out pageNumber))
-                    {
-                        Trace.Warning($"log file '{log}' doesn't follow naming convension 'GUID_GUID_INT'.");
-                        continue;
-                    }
-
-                    var record = timeline.Records.FirstOrDefault(x => x.Id == logRecordId);
-                    if (record != null)
-                    {
-                        if (!logPages.ContainsKey(record.Id))
+                        var logName = Path.GetFileNameWithoutExtension(log);
+                        var logNameParts = logName.Split('_', StringSplitOptions.RemoveEmptyEntries);
+                        if (logNameParts.Length != 3)
                         {
-                            logPages[record.Id] = new Dictionary<int, string>();
-                            logRecords[record.Id] = record;
+                            Trace.Warning($"log file '{log}' doesn't follow naming convension 'GUID_GUID_INT'.");
+                            continue;
+                        }
+                        var logPageSeperator = logName.IndexOf('_');
+                        var logRecordId = Guid.Empty;
+                        var pageNumber = 0;
+
+                        if (!Guid.TryParse(logNameParts[0], out Guid timelineId) || timelineId != timeline.Id)
+                        {
+                            Trace.Warning($"log file '{log}' is not belongs to current job");
+                            continue;
                         }
 
-                        logPages[record.Id][pageNumber] = log;
-                    }
-                }
-
-                foreach (var pages in logPages)
-                {
-                    var record = logRecords[pages.Key];
-                    if (record.Log == null)
-                    {
-                        // Create the log
-                        record.Log = await jobServer.CreateLogAsync(message.Plan.ScopeIdentifier, message.Plan.PlanType, message.Plan.PlanId, new TaskLog(String.Format(@"logs\{0:D}", record.Id)), default(CancellationToken));
-
-                        // Need to post timeline record updates to reflect the log creation
-                        updatedRecords.Add(record.Clone());
-                    }
-
-                    for (var i = 1; i <= pages.Value.Count; i++)
-                    {
-                        var logFile = pages.Value[i];
-                        // Upload the contents
-                        using (FileStream fs = File.Open(logFile, FileMode.Open, FileAccess.Read, FileShare.ReadWrite))
+                        if (!Guid.TryParse(logNameParts[1], out logRecordId))
                         {
-                            var logUploaded = await jobServer.AppendLogContentAsync(message.Plan.ScopeIdentifier, message.Plan.PlanType, message.Plan.PlanId, record.Log.Id, fs, default(CancellationToken));
+                            Trace.Warning($"log file '{log}' doesn't follow naming convension 'GUID_GUID_INT'.");
+                            continue;
                         }
 
-                        Trace.Info($"Uploaded unfinished log '{logFile}' for current job.");
-                        IOUtil.DeleteFile(logFile);
+                        if (!int.TryParse(logNameParts[2], out pageNumber))
+                        {
+                            Trace.Warning($"log file '{log}' doesn't follow naming convension 'GUID_GUID_INT'.");
+                            continue;
+                        }
+
+                        var record = timeline.Records.FirstOrDefault(x => x.Id == logRecordId);
+                        if (record != null)
+                        {
+                            if (!logPages.ContainsKey(record.Id))
+                            {
+                                logPages[record.Id] = new Dictionary<int, string>();
+                                logRecords[record.Id] = record;
+                            }
+
+                            logPages[record.Id][pageNumber] = log;
+                        }
+                    }
+
+                    foreach (var pages in logPages)
+                    {
+                        var record = logRecords[pages.Key];
+                        if (record.Log == null)
+                        {
+                            // Create the log
+                            record.Log = await jobServer.CreateLogAsync(message.Plan.ScopeIdentifier, message.Plan.PlanType, message.Plan.PlanId, new TaskLog(String.Format(@"logs\{0:D}", record.Id)), default(CancellationToken));
+
+                            // Need to post timeline record updates to reflect the log creation
+                            updatedRecords.Add(record.Clone());
+                        }
+
+                        for (var i = 1; i <= pages.Value.Count; i++)
+                        {
+                            var logFile = pages.Value[i];
+                            // Upload the contents
+                            using (FileStream fs = File.Open(logFile, FileMode.Open, FileAccess.Read, FileShare.ReadWrite))
+                            {
+                                var logUploaded = await jobServer.AppendLogContentAsync(message.Plan.ScopeIdentifier, message.Plan.PlanType, message.Plan.PlanId, record.Log.Id, fs, default(CancellationToken));
+                            }
+
+                            Trace.Info($"Uploaded unfinished log '{logFile}' for current job.");
+                            IOUtil.DeleteFile(logFile);
+                        }
+                    }
+
+                    if (updatedRecords.Count > 0)
+                    {
+                        await jobServer.UpdateTimelineRecordsAsync(message.Plan.ScopeIdentifier, message.Plan.PlanType, message.Plan.PlanId, message.Timeline.Id, updatedRecords, CancellationToken.None);
                     }
                 }
-
-                if (updatedRecords.Count > 0)
+                else
                 {
-                    await jobServer.UpdateTimelineRecordsAsync(message.Plan.ScopeIdentifier, message.Plan.PlanType, message.Plan.PlanId, message.Timeline.Id, updatedRecords, CancellationToken.None);
+                    Trace.Info("Job server does not support log upload yet.");
                 }
             }
             catch (Exception ex)
@@ -943,6 +1075,12 @@ namespace GitHub.Runner.Listener
                 return;
             }
 
+            if (this._isRunServiceJob)
+            {
+                Trace.Verbose($"Skip FinishAgentRequest call from Listener because MessageType is {message.MessageType}");
+                return;
+            }
+
             var runnerServer = HostContext.GetService<IRunnerServer>();
             int completeJobRequestRetryLimit = 5;
             List<Exception> exceptions = new();
@@ -979,66 +1117,117 @@ namespace GitHub.Runner.Listener
         }
 
         // log an error issue to job level timeline record
-        private async Task LogWorkerProcessUnhandledException(IJobServer jobServer, Pipelines.AgentJobRequestMessage message, string errorMessage)
+        private async Task LogWorkerProcessUnhandledException(IRunnerService server, Pipelines.AgentJobRequestMessage message, string errorMessage)
         {
-            try
+            if (server is IJobServer jobServer)
             {
-                var timeline = await jobServer.GetTimelineAsync(message.Plan.ScopeIdentifier, message.Plan.PlanType, message.Plan.PlanId, message.Timeline.Id, CancellationToken.None);
-                ArgUtil.NotNull(timeline, nameof(timeline));
-
-                TimelineRecord jobRecord = timeline.Records.FirstOrDefault(x => x.Id == message.JobId && x.RecordType == "Job");
-                ArgUtil.NotNull(jobRecord, nameof(jobRecord));
-
                 try
                 {
-                    if (!string.IsNullOrEmpty(errorMessage) &&
-                        message.Variables.TryGetValue("DistributedTask.EnableRunnerIPCDebug", out var enableRunnerIPCDebug) &&
-                        StringUtil.ConvertToBoolean(enableRunnerIPCDebug.Value))
+                    var timeline = await jobServer.GetTimelineAsync(message.Plan.ScopeIdentifier, message.Plan.PlanType, message.Plan.PlanId, message.Timeline.Id, CancellationToken.None);
+                    ArgUtil.NotNull(timeline, nameof(timeline));
+
+                    TimelineRecord jobRecord = timeline.Records.FirstOrDefault(x => x.Id == message.JobId && x.RecordType == "Job");
+                    ArgUtil.NotNull(jobRecord, nameof(jobRecord));
+
+                    try
                     {
-                        // the trace should be best effort and not affect any job result
-                        var match = _invalidJsonRegex.Match(errorMessage);
-                        if (match.Success &&
-                            match.Groups.Count == 2)
+                        if (!string.IsNullOrEmpty(errorMessage) &&
+                            message.Variables.TryGetValue("DistributedTask.EnableRunnerIPCDebug", out var enableRunnerIPCDebug) &&
+                            StringUtil.ConvertToBoolean(enableRunnerIPCDebug.Value))
                         {
-                            var jsonPosition = int.Parse(match.Groups[1].Value);
-                            var serializedJobMessage = JsonUtility.ToString(message);
-                            var originalJson = serializedJobMessage.Substring(jsonPosition - 10, 20);
-                            errorMessage = $"Runner sent Json at position '{jsonPosition}': {originalJson} ({Convert.ToBase64String(Encoding.UTF8.GetBytes(originalJson))})\n{errorMessage}";
+                            // the trace should be best effort and not affect any job result
+                            var match = _invalidJsonRegex.Match(errorMessage);
+                            if (match.Success &&
+                                match.Groups.Count == 2)
+                            {
+                                var jsonPosition = int.Parse(match.Groups[1].Value);
+                                var serializedJobMessage = JsonUtility.ToString(message);
+                                var originalJson = serializedJobMessage.Substring(jsonPosition - 10, 20);
+                                errorMessage = $"Runner sent Json at position '{jsonPosition}': {originalJson} ({Convert.ToBase64String(Encoding.UTF8.GetBytes(originalJson))})\n{errorMessage}";
+                            }
                         }
                     }
+                    catch (Exception ex)
+                    {
+                        Trace.Error(ex);
+                        errorMessage = $"Fail to check json IPC error: {ex.Message}\n{errorMessage}";
+                    }
+
+                    var unhandledExceptionIssue = new Issue() { Type = IssueType.Error, Message = errorMessage };
+                    unhandledExceptionIssue.Data[Constants.Runner.InternalTelemetryIssueDataKey] = Constants.Runner.WorkerCrash;
+                    jobRecord.ErrorCount++;
+                    jobRecord.Issues.Add(unhandledExceptionIssue);
+                    await jobServer.UpdateTimelineRecordsAsync(message.Plan.ScopeIdentifier, message.Plan.PlanType, message.Plan.PlanId, message.Timeline.Id, new TimelineRecord[] { jobRecord }, CancellationToken.None);
                 }
                 catch (Exception ex)
                 {
+                    Trace.Error("Fail to report unhandled exception from Runner.Worker process");
                     Trace.Error(ex);
-                    errorMessage = $"Fail to check json IPC error: {ex.Message}\n{errorMessage}";
                 }
-
-                var unhandledExceptionIssue = new Issue() { Type = IssueType.Error, Message = errorMessage };
-                unhandledExceptionIssue.Data[Constants.Runner.InternalTelemetryIssueDataKey] = Constants.Runner.WorkerCrash;
-                jobRecord.ErrorCount++;
-                jobRecord.Issues.Add(unhandledExceptionIssue);
-                await jobServer.UpdateTimelineRecordsAsync(message.Plan.ScopeIdentifier, message.Plan.PlanType, message.Plan.PlanId, message.Timeline.Id, new TimelineRecord[] { jobRecord }, CancellationToken.None);
             }
-            catch (Exception ex)
+            else
             {
-                Trace.Error("Fail to report unhandled exception from Runner.Worker process");
-                Trace.Error(ex);
+                Trace.Info("Job server does not support handling unhandled exception yet, error message: {0}", errorMessage);
+                return;
             }
         }
 
         // raise job completed event to fail the job.
-        private async Task ForceFailJob(IJobServer jobServer, Pipelines.AgentJobRequestMessage message)
+        private async Task ForceFailJob(IRunnerService server, Pipelines.AgentJobRequestMessage message)
         {
-            try
+            if (server is IJobServer jobServer)
             {
-                var jobCompletedEvent = new JobCompletedEvent(message.RequestId, message.JobId, TaskResult.Failed);
-                await jobServer.RaisePlanEventAsync<JobCompletedEvent>(message.Plan.ScopeIdentifier, message.Plan.PlanType, message.Plan.PlanId, jobCompletedEvent, CancellationToken.None);
+                try
+                {
+                    var jobCompletedEvent = new JobCompletedEvent(message.RequestId, message.JobId, TaskResult.Failed);
+                    await jobServer.RaisePlanEventAsync<JobCompletedEvent>(message.Plan.ScopeIdentifier, message.Plan.PlanType, message.Plan.PlanId, jobCompletedEvent, CancellationToken.None);
+                }
+                catch (Exception ex)
+                {
+                    Trace.Error("Fail to raise JobCompletedEvent back to service.");
+                    Trace.Error(ex);
+                }
             }
-            catch (Exception ex)
+            else if (server is IRunServer runServer)
             {
-                Trace.Error("Fail to raise JobCompletedEvent back to service.");
-                Trace.Error(ex);
+                try
+                {
+                    await runServer.CompleteJobAsync(message.Plan.PlanId, message.JobId, TaskResult.Failed, outputs: null, stepResults: null, CancellationToken.None);
+                }
+                catch (Exception ex)
+                {
+                    Trace.Error("Fail to raise job completion back to service.");
+                    Trace.Error(ex);
+                }
             }
+            else
+            {
+                throw new NotSupportedException($"Server type {server.GetType().FullName} is not supported.");
+            }
+        }
+
+        private async Task<IRunnerService> InitializeJobServerAsync(ServiceEndpoint systemConnection)
+        {
+            if (this._isRunServiceJob)
+            {
+                return await GetRunServerAsync(systemConnection);
+            }
+            else
+            {
+                var jobServer = HostContext.GetService<IJobServer>();
+                VssCredentials jobServerCredential = VssUtil.GetVssCredential(systemConnection);
+                VssConnection jobConnection = VssUtil.CreateConnection(systemConnection.Url, jobServerCredential);
+                await jobServer.ConnectAsync(jobConnection);
+                return jobServer;
+            }
+        }
+
+        private async Task<IRunServer> GetRunServerAsync(ServiceEndpoint systemConnection)
+        {
+            var runServer = HostContext.GetService<IRunServer>();
+            VssCredentials jobServerCredential = VssUtil.GetVssCredential(systemConnection);
+            await runServer.ConnectAsync(systemConnection.Url, jobServerCredential);
+            return runServer;
         }
 
         private class WorkerDispatcher : IDisposable

src/Runner.Listener/MessageListener.cs

@@ -182,7 +182,7 @@ namespace GitHub.Runner.Listener
                 try
                 {
                     _getMessagesTokenSource?.Cancel();
-                } 
+                }
                 catch (ObjectDisposedException)
                 {
                     Trace.Info("_getMessagesTokenSource is already disposed.");
@@ -245,6 +245,10 @@ namespace GitHub.Runner.Listener
                     _accessTokenRevoked = true;
                     throw;
                 }
+                catch (AccessDeniedException e) when (e.InnerException is InvalidTaskAgentVersionException)
+                {
+                    throw;
+                }
                 catch (Exception ex)
                 {
                     Trace.Error("Catch exception during get next message.");
@@ -289,7 +293,7 @@ namespace GitHub.Runner.Listener
                         await HostContext.Delay(_getNextMessageRetryInterval, token);
                     }
                 }
-                finally 
+                finally
                 {
                     _getMessagesTokenSource.Dispose();
                 }

src/Runner.Listener/Program.cs

@@ -6,6 +6,7 @@ using System.IO;
 using System.Reflection;
 using System.Runtime.InteropServices;
 using System.Threading.Tasks;
+using GitHub.DistributedTask.WebApi;
 
 namespace GitHub.Runner.Listener
 {
@@ -58,7 +59,7 @@ namespace GitHub.Runner.Listener
                         terminal.WriteLine("This runner version is built for Windows. Please install a correct build for your OS.");
                         return Constants.Runner.ReturnCode.TerminatedError;
                     }
-                    #if ARM64
+#if ARM64
                         // A little hacky, but windows gives no way to differentiate between windows 10 and 11.
                         // By default only 11 supports native x64 app emulation on arm, so we only want to support windows 11
                         // https://docs.microsoft.com/en-us/windows/arm/overview#build-windows-apps-that-run-on-arm
@@ -69,7 +70,7 @@ namespace GitHub.Runner.Listener
                             terminal.WriteLine("Win-arm64 runners require windows 11 or later. Please upgrade your operating system.");
                             return Constants.Runner.ReturnCode.TerminatedError;
                         }
-                    #endif
+#endif
                     break;
                 default:
                     terminal.WriteLine($"Running the runner on this platform is not supported. The current platform is {RuntimeInformation.OSDescription} and it was built for {Constants.Runner.Platform.ToString()}.");
@@ -137,6 +138,12 @@ namespace GitHub.Runner.Listener
                 }
 
             }
+            catch (AccessDeniedException e) when (e.InnerException is InvalidTaskAgentVersionException)
+            {
+                terminal.WriteError($"An error occured: {e.Message}");
+                trace.Error(e);
+                return Constants.Runner.ReturnCode.TerminatedError;
+            }
             catch (Exception e)
             {
                 terminal.WriteError($"An error occurred: {e.Message}");

src/Runner.Listener/Runner.cs

@@ -4,11 +4,13 @@ using System.IO;
 using System.Linq;
 using System.Reflection;
 using System.Runtime.CompilerServices;
+using System.Security.Cryptography;
 using System.Text;
 using System.Threading;
 using System.Threading.Tasks;
 using GitHub.DistributedTask.WebApi;
 using GitHub.Runner.Common;
+using GitHub.Runner.Common.Util;
 using GitHub.Runner.Listener.Check;
 using GitHub.Runner.Listener.Configuration;
 using GitHub.Runner.Sdk;
@@ -135,6 +137,12 @@ namespace GitHub.Runner.Listener
                 // remove config files, remove service, and exit
                 if (command.Remove)
                 {
+                    // only remove local config files and exit
+                    if (command.RemoveLocalConfig)
+                    {
+                        configManager.DeleteLocalRunnerConfig();
+                        return Constants.Runner.ReturnCode.Success;
+                    }
                     try
                     {
                         await configManager.UnconfigureAsync(command);
@@ -203,10 +211,16 @@ namespace GitHub.Runner.Listener
                         foreach (var config in jitConfig)
                         {
                             var configFile = Path.Combine(HostContext.GetDirectory(WellKnownDirectory.Root), config.Key);
-                            var configContent = Encoding.UTF8.GetString(Convert.FromBase64String(config.Value));
-                            File.WriteAllText(configFile, configContent, Encoding.UTF8);
+                            var configContent = Convert.FromBase64String(config.Value);
+#if OS_WINDOWS
+                            if (configFile == HostContext.GetConfigFile(WellKnownConfigFile.RSACredentials))
+                            {
+                                configContent = ProtectedData.Protect(configContent, null, DataProtectionScope.LocalMachine);
+                            }
+#endif
+                            File.WriteAllBytes(configFile, configContent);
                             File.SetAttributes(configFile, File.GetAttributes(configFile) | FileAttributes.Hidden);
-                            Trace.Info($"Save {configContent.Length} chars to '{configFile}'.");
+                            Trace.Info($"Saved {configContent.Length} bytes to '{configFile}'.");
                         }
                     }
                     catch (Exception ex)
@@ -325,13 +339,26 @@ namespace GitHub.Runner.Listener
             }
         }
 
+        private IMessageListener GetMesageListener(RunnerSettings settings)
+        {
+            if (settings.UseV2Flow)
+            {
+                Trace.Info($"Using BrokerMessageListener");
+                var brokerListener = new BrokerMessageListener();
+                brokerListener.Initialize(HostContext);
+                return brokerListener;
+            }
+
+            return HostContext.GetService<IMessageListener>();
+        }
+
         //create worker manager, create message listener and start listening to the queue
         private async Task<int> RunAsync(RunnerSettings settings, bool runOnce = false)
         {
             try
             {
                 Trace.Info(nameof(RunAsync));
-                _listener = HostContext.GetService<IMessageListener>();
+                _listener = GetMesageListener(settings);
                 if (!await _listener.CreateSessionAsync(HostContext.RunnerShutdownToken))
                 {
                     return Constants.Runner.ReturnCode.TerminatedError;
@@ -496,7 +523,7 @@ namespace GitHub.Runner.Listener
                                 }
                             }
                             // Broker flow
-                            else if (string.Equals(message.MessageType, JobRequestMessageTypes.RunnerJobRequest, StringComparison.OrdinalIgnoreCase))
+                            else if (MessageUtil.IsRunServiceJob(message.MessageType))
                             {
                                 if (autoUpdateInProgress || runOnceJobReceived)
                                 {
@@ -647,6 +674,7 @@ Config Options:
  --name string          Name of the runner to configure (default {Environment.MachineName ?? "myrunner"})
  --runnergroup string   Name of the runner group to add this runner to (defaults to the default runner group)
  --labels string        Extra labels in addition to the default: 'self-hosted,{Constants.Runner.Platform},{Constants.Runner.PlatformArchitecture}'
+ --local                Removes the runner config files from your local machine. Used as an option to the remove command
  --work string          Relative runner work directory (default {Constants.Path.WorkDirectory})
  --replace              Replace any existing runner with the same name (default false)
  --pat                  GitHub personal access token with repo scope. Used for checking network connectivity when executing `.{separator}run.{ext} --check`

src/Runner.Sdk/ActionPlugin.cs

@@ -73,7 +73,7 @@ namespace GitHub.Runner.Sdk
         {
             var headerValues = new List<ProductInfoHeaderValue>();
             headerValues.Add(new ProductInfoHeaderValue($"GitHubActionsRunner-Plugin", BuildConstants.RunnerPackage.Version));
-            headerValues.Add(new ProductInfoHeaderValue($"({RuntimeInformation.OSDescription.Trim()})"));
+            headerValues.Add(new ProductInfoHeaderValue($"({StringUtil.SanitizeUserAgentHeader(RuntimeInformation.OSDescription)})"));
 
             if (VssClientHttpRequestSettings.Default.UserAgent != null && VssClientHttpRequestSettings.Default.UserAgent.Count > 0)
             {

src/Runner.Sdk/ProcessInvoker.cs

@@ -264,7 +264,17 @@ namespace GitHub.Runner.Sdk
             {
                 foreach (KeyValuePair<string, string> kvp in environment)
                 {
+#if OS_WINDOWS
+                    string tempKey = String.IsNullOrWhiteSpace(kvp.Key) ? kvp.Key : kvp.Key.Split('\0')[0];
+                    string tempValue = String.IsNullOrWhiteSpace(kvp.Value) ? kvp.Value : kvp.Value.Split('\0')[0];
+                    if(!String.IsNullOrWhiteSpace(tempKey))
+                    {
+                         _proc.StartInfo.Environment[tempKey] = tempValue;
+                    }
+#else
                     _proc.StartInfo.Environment[kvp.Key] = kvp.Value;
+
+#endif
                 }
             }
 

src/Runner.Sdk/RunnerWebProxy.cs

@@ -164,7 +164,6 @@ namespace GitHub.Runner.Sdk
                         {
                             continue;
                         }
-
                         _noProxyList.Add(noProxyInfo);
                     }
                 }
@@ -207,6 +206,11 @@ namespace GitHub.Runner.Sdk
         {
             foreach (var noProxy in _noProxyList)
             {
+                // bypass on wildcard no_proxy
+                if (string.Equals(noProxy.Host, "*", StringComparison.OrdinalIgnoreCase))
+                {
+                    return true;
+                }
                 var matchHost = false;
                 var matchPort = false;
 

src/Runner.Sdk/Util/IOUtil.cs

@@ -40,10 +40,19 @@ namespace GitHub.Runner.Sdk
             File.WriteAllText(path, StringUtil.ConvertToJson(obj), Encoding.UTF8);
         }
 
-        public static T LoadObject<T>(string path)
+        public static T LoadObject<T>(string path, bool required = false)
         {
             string json = File.ReadAllText(path, Encoding.UTF8);
-            return StringUtil.ConvertFromJson<T>(json);
+            if (required && string.IsNullOrEmpty(json))
+            {
+                throw new ArgumentNullException($"File {path} is empty");
+            }
+            T result = StringUtil.ConvertFromJson<T>(json);
+            if (required && result == null)
+            {
+                throw new ArgumentException("Converting json to object resulted in a null value");
+            }
+            return result;
         }
 
         public static string GetSha256Hash(string path)

src/Runner.Sdk/Util/StringUtil.cs

@@ -123,5 +123,12 @@ namespace GitHub.Runner.Sdk
         {
             return value?.Substring(0, Math.Min(value.Length, count));
         }
+
+        // Fixes format violations e.g. https://github.com/actions/runner/issues/2165
+        public static string SanitizeUserAgentHeader(string header)
+        {
+            return header.Replace("(", "[").Replace(")", "]").Trim();
+        }
+
     }
 }

src/Runner.Sdk/Util/UrlUtil.cs

@@ -6,9 +6,16 @@ namespace GitHub.Runner.Sdk
     {
         public static bool IsHostedServer(UriBuilder gitHubUrl)
         {
-            return string.Equals(gitHubUrl.Host, "github.com", StringComparison.OrdinalIgnoreCase) ||
+            if (StringUtil.ConvertToBoolean(Environment.GetEnvironmentVariable("GITHUB_ACTIONS_RUNNER_FORCE_GHES")))
+            {
+                return false;
+            }
+
+            return 
+                string.Equals(gitHubUrl.Host, "github.com", StringComparison.OrdinalIgnoreCase) ||
                 string.Equals(gitHubUrl.Host, "www.github.com", StringComparison.OrdinalIgnoreCase) ||
-                string.Equals(gitHubUrl.Host, "github.localhost", StringComparison.OrdinalIgnoreCase);
+                string.Equals(gitHubUrl.Host, "github.localhost", StringComparison.OrdinalIgnoreCase) ||
+                gitHubUrl.Host.EndsWith(".ghe.com", StringComparison.OrdinalIgnoreCase);
         }
 
         public static Uri GetCredentialEmbeddedUrl(Uri baseUrl, string username, string password)

src/Runner.Sdk/Util/VssUtil.cs

@@ -19,7 +19,7 @@ namespace GitHub.Runner.Sdk
         {
             var headerValues = new List<ProductInfoHeaderValue>();
             headerValues.AddRange(additionalUserAgents);
-            headerValues.Add(new ProductInfoHeaderValue($"({RuntimeInformation.OSDescription.Trim()})"));
+            headerValues.Add(new ProductInfoHeaderValue($"({StringUtil.SanitizeUserAgentHeader(RuntimeInformation.OSDescription)})"));
 
             if (VssClientHttpRequestSettings.Default.UserAgent != null && VssClientHttpRequestSettings.Default.UserAgent.Count > 0)
             {
@@ -116,7 +116,7 @@ namespace GitHub.Runner.Sdk
             // settings are applied to an HttpRequestMessage.
             settings.AcceptLanguages.Remove(CultureInfo.InvariantCulture);
 
-            RawConnection connection = new(serverUri, new RawHttpMessageHandler(credentials.ToOAuthCredentials(), settings), additionalDelegatingHandler);
+            RawConnection connection = new(serverUri, new RawHttpMessageHandler(credentials.Federated, settings), additionalDelegatingHandler);
             return connection;
         }
 

src/Runner.Worker/ActionRunner.cs

@@ -25,7 +25,6 @@ namespace GitHub.Runner.Worker
     public interface IActionRunner : IStep, IRunnerService
     {
         ActionRunStage Stage { get; set; }
-        bool TryEvaluateDisplayName(DictionaryContextData contextData, IExecutionContext context);
         Pipelines.ActionStep Action { get; set; }
     }
 
@@ -285,25 +284,67 @@ namespace GitHub.Runner.Worker
 
         }
 
-        public bool TryEvaluateDisplayName(DictionaryContextData contextData, IExecutionContext context)
+        /// <summary>
+        /// Attempts to update the DisplayName.
+        /// As the "Try..." name implies, this method should never throw an exception.
+        /// Returns true if the DisplayName is already present or it was successfully updated.
+        /// </summary>
+        public bool TryUpdateDisplayName(out bool updated)
+        {
+            updated = false;
+
+            // REVIEW:  This try/catch can be removed if some future implementation of EvaluateDisplayName and UpdateTimelineRecordDisplayName
+            // can make reasonable guarantees that they won't throw an exception.
+            try
+            {
+                // This attempt is only worthwhile at the "Main" stage.
+                //    When the job starts, there's an initial attempt to evaluate the DisplayName.  (see JobExtension::InitializeJob)
+                //    During the "Pre" stage, we expect that no contexts will have changed since the initial evaluation.
+                //    "Main" stage is handled here.
+                //    During the "Post" stage, it no longer matters.
+                if (this.Stage == ActionRunStage.Main && EvaluateDisplayName(this.ExecutionContext.ExpressionValues, this.ExecutionContext, out updated))
+                {
+                    if (updated)
+                    {
+                        this.ExecutionContext.UpdateTimelineRecordDisplayName(this.DisplayName);
+                    }
+                }
+            }
+            catch (Exception ex)
+            {
+                Trace.Warning("Caught exception while attempting to evaulate/update the step's DisplayName.  Exception Details:  {0}", ex);
+            }
+
+            // For consistency with other implementations of TryUpdateDisplayName we use !string.IsNullOrEmpty below,
+            // but note that (at the time of this writing) ActionRunner::DisplayName::get always returns a non-empty string due to its fallback logic.
+            // In other words, the net effect is that this particular implementation of TryUpdateDisplayName will always return true.
+            return !string.IsNullOrEmpty(this.DisplayName);
+        }
+
+
+        /// <summary>
+        /// Attempts to evaluate the DisplayName of this IActionRunner.
+        /// Returns true if the DisplayName is already present or it was successfully evaluated.
+        /// </summary>
+        public bool EvaluateDisplayName(DictionaryContextData contextData, IExecutionContext context, out bool updated)
         {
             ArgUtil.NotNull(context, nameof(context));
             ArgUtil.NotNull(Action, nameof(Action));
 
-            // If we have already expanded the display name, there is no need to expand it again
-            // TODO: Remove the ShouldEvaluateDisplayName check and field post m158 deploy, we should do it by default once the server is updated
+            updated = false;
+            // If we have already expanded the display name, don't bother attempting [re-]expansion.
             if (_didFullyEvaluateDisplayName || !string.IsNullOrEmpty(Action.DisplayName))
             {
-                return false;
+                return true;
             }
 
-            bool didFullyEvaluate;
-            _displayName = GenerateDisplayName(Action, contextData, context, out didFullyEvaluate);
+            _displayName = GenerateDisplayName(Action, contextData, context, out bool didFullyEvaluate);
 
-            // If we evaluated fully mask any secrets
+            // If we evaluated, fully mask any secrets
             if (didFullyEvaluate)
             {
                 _displayName = HostContext.SecretMasker.MaskSecrets(_displayName);
+                updated = true;
             }
             context.Debug($"Set step '{Action.Name}' display name to: '{_displayName}'");
             _didFullyEvaluateDisplayName = didFullyEvaluate;

src/Runner.Worker/ContainerOperationProvider.cs

@@ -33,8 +33,14 @@ namespace GitHub.Runner.Worker
         public override void Initialize(IHostContext hostContext)
         {
             base.Initialize(hostContext);
-            _dockerManager = HostContext.GetService<IDockerCommandManager>();
-            _containerHookManager = HostContext.GetService<IContainerHookManager>();
+            if (string.IsNullOrEmpty(Environment.GetEnvironmentVariable(Constants.Hooks.ContainerHooksPath)))
+            {
+                _dockerManager = HostContext.GetService<IDockerCommandManager>();
+            }
+            else
+            {
+                _containerHookManager = HostContext.GetService<IContainerHookManager>();
+            }
         }
 
         public async Task StartContainersAsync(IExecutionContext executionContext, object data)

src/Runner.Worker/ExecutionContext.cs

@@ -1,4 +1,4 @@
-using System;
+using System;
 using System.Collections.Generic;
 using System.Globalization;
 using System.IO;
@@ -6,6 +6,7 @@ using System.Linq;
 using System.Text;
 using System.Threading;
 using System.Threading.Tasks;
+using GitHub.Actions.RunService.WebApi;
 using GitHub.DistributedTask.Expressions2;
 using GitHub.DistributedTask.ObjectTemplating.Tokens;
 using GitHub.DistributedTask.Pipelines.ContextData;
@@ -80,7 +81,7 @@ namespace GitHub.Runner.Worker
         // logging
         long Write(string tag, string message);
         void QueueAttachFile(string type, string name, string filePath);
-        void QueueSummaryFile(string name, string filePath, string stepId);
+        void QueueSummaryFile(string name, string filePath, Guid stepRecordId);
 
         // timeline record update methods
         void Start(string currentOperation = null);
@@ -437,6 +438,17 @@ namespace GitHub.Runner.Worker
 
             PublishStepTelemetry();
 
+            var stepResult = new StepResult();
+            stepResult.ExternalID = _record.Id;
+            stepResult.Conclusion = _record.Result ?? TaskResult.Succeeded;
+            stepResult.Status = _record.State;
+            stepResult.Number = _record.Order;
+            stepResult.Name = _record.Name;
+            stepResult.StartedAt = _record.StartTime;
+            stepResult.CompletedAt = _record.FinishTime;
+
+            Global.StepsResult.Add(stepResult);
+
             if (Root != this)
             {
                 // only dispose TokenSource for step level ExecutionContext
@@ -710,6 +722,9 @@ namespace GitHub.Runner.Worker
             // ActionsStepTelemetry for entire job
             Global.StepsTelemetry = new List<ActionsStepTelemetry>();
 
+            // Steps results for entire job
+            Global.StepsResult = new List<StepResult>();
+
             // Job Outputs
             JobOutputs = new Dictionary<string, VariableValue>(StringComparer.OrdinalIgnoreCase);
 
@@ -847,7 +862,7 @@ namespace GitHub.Runner.Worker
             _jobServerQueue.QueueFileUpload(_mainTimelineId, _record.Id, type, name, filePath, deleteSource: false);
         }
 
-        public void QueueSummaryFile(string name, string filePath, string stepId)
+        public void QueueSummaryFile(string name, string filePath, Guid stepRecordId)
         {
             ArgUtil.NotNullOrEmpty(name, nameof(name));
             ArgUtil.NotNullOrEmpty(filePath, nameof(filePath));
@@ -856,8 +871,7 @@ namespace GitHub.Runner.Worker
             {
                 throw new FileNotFoundException($"Can't upload (name:{name}) file: {filePath}. File does not exist.");
             }
-
-            _jobServerQueue.QueueSummaryUpload(_mainTimelineId, _record.Id, stepId, name, filePath, deleteSource: false);
+            _jobServerQueue.QueueResultsUpload(stepRecordId, name, filePath, ChecksAttachmentType.StepSummary, deleteSource: false, finalize: true, firstBlock: true, totalLines: 0);
         }
 
         // Add OnMatcherChanged

src/Runner.Worker/FileCommandManager.cs

@@ -182,6 +182,14 @@ namespace GitHub.Runner.Worker
                     return;
                 }
 
+                if (fileSize > AttachmentSizeLimit)
+                {
+                    context.Error(String.Format(Constants.Runner.UnsupportedSummarySize, AttachmentSizeLimit / 1024, fileSize / 1024));
+                    Trace.Info($"Step Summary file ({filePath}) is too large ({fileSize} bytes); skipping attachment upload");
+
+                    return;
+                }
+
                 Trace.Verbose($"Step Summary file exists: {filePath} and has a file size of {fileSize} bytes");
                 var scrubbedFilePath = filePath + "-scrubbed";
 
@@ -200,28 +208,19 @@ namespace GitHub.Runner.Worker
                     ? context.Id.ToString()
                     : context.EmbeddedId.ToString();
 
+                Trace.Info($"Queueing file ({filePath}) for attachment upload ({attachmentName})");
+                // Attachments must be added to the parent context (job), not the current context (step)
+                context.Root.QueueAttachFile(ChecksAttachmentType.StepSummary, attachmentName, scrubbedFilePath);
+
+                // Dual upload the same files to Results Service
                 context.Global.Variables.TryGetValue("system.github.results_endpoint", out string resultsReceiverEndpoint);
                 if (resultsReceiverEndpoint != null)
                 {
                     Trace.Info($"Queueing results file ({filePath}) for attachment upload ({attachmentName})");
-                    var stepId = context.Id.ToString();
+                    var stepId = context.Id;
                     // Attachments must be added to the parent context (job), not the current context (step)
                     context.Root.QueueSummaryFile(attachmentName, scrubbedFilePath, stepId);
                 }
-                else
-                {
-                    if (fileSize > AttachmentSizeLimit)
-                    {
-                        context.Error(String.Format(Constants.Runner.UnsupportedSummarySize, AttachmentSizeLimit / 1024, fileSize / 1024));
-                        Trace.Info($"Step Summary file ({filePath}) is too large ({fileSize} bytes); skipping attachment upload");
-
-                        return;
-                    }
-
-                    Trace.Info($"Queueing file ({filePath}) for attachment upload ({attachmentName})");
-                    // Attachments must be added to the parent context (job), not the current context (step)
-                    context.Root.QueueAttachFile(ChecksAttachmentType.StepSummary, attachmentName, scrubbedFilePath);
-                }
             }
             catch (Exception e)
             {

src/Runner.Worker/GlobalContext.cs

@@ -1,5 +1,6 @@
 using System;
 using System.Collections.Generic;
+using GitHub.Actions.RunService.WebApi;
 using GitHub.DistributedTask.WebApi;
 using GitHub.Runner.Common.Util;
 using GitHub.Runner.Worker.Container;
@@ -16,6 +17,7 @@ namespace GitHub.Runner.Worker
         public IList<String> FileTable { get; set; }
         public IDictionary<String, IDictionary<String, String>> JobDefaults { get; set; }
         public List<ActionsStepTelemetry> StepsTelemetry { get; set; }
+        public List<StepResult> StepsResult { get; set; }
         public List<JobTelemetry> JobTelemetry { get; set; }
         public TaskOrchestrationPlanReference Plan { get; set; }
         public List<string> PrependPath { get; set; }

src/Runner.Worker/Handlers/ContainerActionHandler.cs

@@ -38,8 +38,17 @@ namespace GitHub.Runner.Worker.Handlers
             // Update the env dictionary.
             AddInputsToEnvironment();
 
-            var dockerManager = HostContext.GetService<IDockerCommandManager>();
-            var containerHookManager = HostContext.GetService<IContainerHookManager>();
+            IDockerCommandManager dockerManager = null;
+            IContainerHookManager containerHookManager = null;
+            if (FeatureManager.IsContainerHooksEnabled(ExecutionContext.Global.Variables))
+            {
+                containerHookManager = HostContext.GetService<IContainerHookManager>();
+            }
+            else
+            {
+                dockerManager = HostContext.GetService<IDockerCommandManager>();
+            }
+
             string dockerFile = null;
 
             // container image haven't built/pull

src/Runner.Worker/JobExtension.cs

@@ -306,13 +306,13 @@ namespace GitHub.Runner.Worker
                                 }
                             }
 
-                            actionRunner.TryEvaluateDisplayName(contextData, context);
+                            actionRunner.EvaluateDisplayName(contextData, context, out _);
                             jobSteps.Add(actionRunner);
 
                             if (prepareResult.PreStepTracker.TryGetValue(step.Id, out var preStep))
                             {
                                 Trace.Info($"Adding pre-{action.DisplayName}.");
-                                preStep.TryEvaluateDisplayName(contextData, context);
+                                preStep.EvaluateDisplayName(contextData, context, out _);
                                 preStep.DisplayName = $"Pre {preStep.DisplayName}";
                                 preJobSteps.Add(preStep);
                             }
@@ -321,25 +321,28 @@ namespace GitHub.Runner.Worker
 
                     if (message.Variables.TryGetValue("system.workflowFileFullPath", out VariableValue workflowFileFullPath))
                     {
-                        context.Output($"Uses: {workflowFileFullPath.Value}");
+                        var usesLogText = $"Uses: {workflowFileFullPath.Value}";
+                        var reference = GetWorkflowReference(message.Variables);
+                        context.Output(usesLogText + reference);
+
                         if (message.ContextData.TryGetValue("inputs", out var pipelineContextData))
                         {
                             var inputs = pipelineContextData.AssertDictionary("inputs");
-                            if (inputs.Any()) 
+                            if (inputs.Any())
                             {
                                 context.Output($"##[group] Inputs");
-                                foreach (var input in inputs) 
+                                foreach (var input in inputs)
                                 {
                                     context.Output($"  {input.Key}: {input.Value}");
                                 }
                                 context.Output("##[endgroup]");
                             }
                         }
+                    }
 
-                        if (!string.IsNullOrWhiteSpace(message.JobDisplayName)) 
-                        {
-                            context.Output($"Complete job name: {message.JobDisplayName}");
-                        }
+                    if (!string.IsNullOrWhiteSpace(message.JobDisplayName))
+                    {
+                        context.Output($"Complete job name: {message.JobDisplayName}");
                     }
 
                     var intraActionStates = new Dictionary<Guid, Dictionary<string, string>>();
@@ -452,6 +455,24 @@ namespace GitHub.Runner.Worker
             }
         }
 
+        private string GetWorkflowReference(IDictionary<string, VariableValue> variables)
+        {
+            var reference = "";
+            if (variables.TryGetValue("system.workflowFileSha", out VariableValue workflowFileSha))
+            {
+                if (variables.TryGetValue("system.workflowFileRef", out VariableValue workflowFileRef)
+                    && !string.IsNullOrEmpty(workflowFileRef.Value))
+                {
+                    reference += $"@{workflowFileRef.Value} ({workflowFileSha.Value})";
+                }
+                else
+                {
+                    reference += $"@{workflowFileSha.Value}";
+                }
+            }
+            return reference;
+        }
+
         public void FinalizeJob(IExecutionContext jobContext, Pipelines.AgentJobRequestMessage message, DateTime jobStartTimeUtc)
         {
             Trace.Entering();

src/Runner.Worker/JobExtensionRunner.cs

@@ -1,6 +1,7 @@
 using System;
 using System.Threading.Tasks;
 using GitHub.DistributedTask.ObjectTemplating.Tokens;
+using GitHub.DistributedTask.Pipelines.ContextData;
 
 namespace GitHub.Runner.Worker
 {
@@ -32,5 +33,18 @@ namespace GitHub.Runner.Worker
         {
             await _runAsync(ExecutionContext, _data);
         }
+
+        public bool TryUpdateDisplayName(out bool updated)
+        {
+            updated = false;
+            return !string.IsNullOrEmpty(this.DisplayName);
+        }
+
+        public bool EvaluateDisplayName(DictionaryContextData contextData, IExecutionContext context, out bool updated)
+        {
+            updated = false;
+            return !string.IsNullOrEmpty(this.DisplayName);
+        }
+
     }
 }

src/Runner.Worker/JobRunner.cs

@@ -6,7 +6,7 @@ using System.Net.Http;
 using System.Text;
 using System.Threading;
 using System.Threading.Tasks;
-using GitHub.DistributedTask.Pipelines.ContextData;
+using GitHub.DistributedTask.Pipelines;
 using GitHub.DistributedTask.WebApi;
 using GitHub.Runner.Common;
 using GitHub.Runner.Common.Util;
@@ -20,7 +20,7 @@ namespace GitHub.Runner.Worker
     [ServiceLocator(Default = typeof(JobRunner))]
     public interface IJobRunner : IRunnerService
     {
-        Task<TaskResult> RunAsync(Pipelines.AgentJobRequestMessage message, CancellationToken jobRequestCancellationToken);
+        Task<TaskResult> RunAsync(AgentJobRequestMessage message, CancellationToken jobRequestCancellationToken);
     }
 
     public sealed class JobRunner : RunnerService, IJobRunner
@@ -29,7 +29,7 @@ namespace GitHub.Runner.Worker
         private RunnerSettings _runnerSettings;
         private ITempDirectoryManager _tempDirectoryManager;
 
-        public async Task<TaskResult> RunAsync(Pipelines.AgentJobRequestMessage message, CancellationToken jobRequestCancellationToken)
+        public async Task<TaskResult> RunAsync(AgentJobRequestMessage message, CancellationToken jobRequestCancellationToken)
         {
             // Validate parameters.
             Trace.Entering();
@@ -40,21 +40,34 @@ namespace GitHub.Runner.Worker
             Trace.Info("Job ID {0}", message.JobId);
 
             DateTime jobStartTimeUtc = DateTime.UtcNow;
+            IRunnerService server = null;
 
             ServiceEndpoint systemConnection = message.Resources.Endpoints.Single(x => string.Equals(x.Name, WellKnownServiceEndpointNames.SystemVssConnection, StringComparison.OrdinalIgnoreCase));
+            if (MessageUtil.IsRunServiceJob(message.MessageType))
+            {
+                var runServer = HostContext.GetService<IRunServer>();
+                VssCredentials jobServerCredential = VssUtil.GetVssCredential(systemConnection);
+                await runServer.ConnectAsync(systemConnection.Url, jobServerCredential);
+                server = runServer;
+            }
+            else
+            {
+                // Setup the job server and job server queue.
+                var jobServer = HostContext.GetService<IJobServer>();
+                VssCredentials jobServerCredential = VssUtil.GetVssCredential(systemConnection);
+                Uri jobServerUrl = systemConnection.Url;
 
-            // Setup the job server and job server queue.
-            var jobServer = HostContext.GetService<IJobServer>();
-            VssCredentials jobServerCredential = VssUtil.GetVssCredential(systemConnection);
-            Uri jobServerUrl = systemConnection.Url;
+                Trace.Info($"Creating job server with URL: {jobServerUrl}");
+                // jobServerQueue is the throttling reporter.
+                _jobServerQueue = HostContext.GetService<IJobServerQueue>();
+                VssConnection jobConnection = VssUtil.CreateConnection(jobServerUrl, jobServerCredential, new DelegatingHandler[] { new ThrottlingReportHandler(_jobServerQueue) });
+                await jobServer.ConnectAsync(jobConnection);
+
+                _jobServerQueue.Start(message);
+                server = jobServer;
+            }
 
-            Trace.Info($"Creating job server with URL: {jobServerUrl}");
-            // jobServerQueue is the throttling reporter.
-            _jobServerQueue = HostContext.GetService<IJobServerQueue>();
-            VssConnection jobConnection = VssUtil.CreateConnection(jobServerUrl, jobServerCredential, new DelegatingHandler[] { new ThrottlingReportHandler(_jobServerQueue) });
-            await jobServer.ConnectAsync(jobConnection);
 
-            _jobServerQueue.Start(message);
             HostContext.WritePerfCounter($"WorkerJobServerQueueStarted_{message.RequestId.ToString()}");
 
             IExecutionContext jobContext = null;
@@ -99,7 +112,7 @@ namespace GitHub.Runner.Worker
                 {
                     Trace.Error(ex);
                     jobContext.Error(ex);
-                    return await CompleteJobAsync(jobServer, jobContext, message, TaskResult.Failed);
+                    return await CompleteJobAsync(server, jobContext, message, TaskResult.Failed);
                 }
 
                 if (jobContext.Global.WriteDebug)
@@ -136,7 +149,7 @@ namespace GitHub.Runner.Worker
                     // don't log error issue to job ExecutionContext, since server owns the job level issue
                     Trace.Error($"Job is cancelled during initialize.");
                     Trace.Error($"Caught exception: {ex}");
-                    return await CompleteJobAsync(jobServer, jobContext, message, TaskResult.Canceled);
+                    return await CompleteJobAsync(server, jobContext, message, TaskResult.Canceled);
                 }
                 catch (Exception ex)
                 {
@@ -144,7 +157,7 @@ namespace GitHub.Runner.Worker
                     // don't log error issue to job ExecutionContext, since server owns the job level issue
                     Trace.Error($"Job initialize failed.");
                     Trace.Error($"Caught exception from {nameof(jobExtension.InitializeJob)}: {ex}");
-                    return await CompleteJobAsync(jobServer, jobContext, message, TaskResult.Failed);
+                    return await CompleteJobAsync(server, jobContext, message, TaskResult.Failed);
                 }
 
                 // trace out all steps
@@ -181,7 +194,7 @@ namespace GitHub.Runner.Worker
                     // Log the error and fail the job.
                     Trace.Error($"Caught exception from job steps {nameof(StepsRunner)}: {ex}");
                     jobContext.Error(ex);
-                    return await CompleteJobAsync(jobServer, jobContext, message, TaskResult.Failed);
+                    return await CompleteJobAsync(server, jobContext, message, TaskResult.Failed);
                 }
                 finally
                 {
@@ -192,7 +205,7 @@ namespace GitHub.Runner.Worker
                 Trace.Info($"Job result after all job steps finish: {jobContext.Result ?? TaskResult.Succeeded}");
 
                 Trace.Info("Completing the job execution context.");
-                return await CompleteJobAsync(jobServer, jobContext, message);
+                return await CompleteJobAsync(server, jobContext, message);
             }
             finally
             {
@@ -206,6 +219,66 @@ namespace GitHub.Runner.Worker
             }
         }
 
+        private async Task<TaskResult> CompleteJobAsync(IRunnerService server, IExecutionContext jobContext, Pipelines.AgentJobRequestMessage message, TaskResult? taskResult = null)
+        {
+            if (server is IRunServer runServer)
+            {
+                return await CompleteJobAsync(runServer, jobContext, message, taskResult);
+            }
+            else if (server is IJobServer jobServer)
+            {
+                return await CompleteJobAsync(jobServer, jobContext, message, taskResult);
+            }
+            else
+            {
+                throw new NotSupportedException();
+            }
+        }
+
+        private async Task<TaskResult> CompleteJobAsync(IRunServer runServer, IExecutionContext jobContext, Pipelines.AgentJobRequestMessage message, TaskResult? taskResult = null)
+        {
+            jobContext.Debug($"Finishing: {message.JobDisplayName}");
+            TaskResult result = jobContext.Complete(taskResult);
+            if (jobContext.Global.Variables.TryGetValue("Node12ActionsWarnings", out var node12Warnings))
+            {
+                var actions = string.Join(", ", StringUtil.ConvertFromJson<HashSet<string>>(node12Warnings));
+                jobContext.Warning(string.Format(Constants.Runner.Node12DetectedAfterEndOfLife, actions));
+            }
+
+            // Make sure to clean temp after file upload since they may be pending fileupload still use the TEMP dir.
+            _tempDirectoryManager?.CleanupTempDirectory();
+
+            // Load any upgrade telemetry
+            LoadFromTelemetryFile(jobContext.Global.JobTelemetry);
+
+            // Make sure we don't submit secrets as telemetry
+            MaskTelemetrySecrets(jobContext.Global.JobTelemetry);
+
+            Trace.Info($"Raising job completed against run service");
+            var completeJobRetryLimit = 5;
+            var exceptions = new List<Exception>();
+            while (completeJobRetryLimit-- > 0)
+            {
+                try
+                {
+                    await runServer.CompleteJobAsync(message.Plan.PlanId, message.JobId, result, jobContext.JobOutputs, jobContext.Global.StepsResult, default);
+                    return result;
+                }
+                catch (Exception ex)
+                {
+                    Trace.Error($"Catch exception while attempting to complete job {message.JobId}, job request {message.RequestId}.");
+                    Trace.Error(ex);
+                    exceptions.Add(ex);
+                }
+
+                // delay 5 seconds before next retry.
+                await Task.Delay(TimeSpan.FromSeconds(5));
+            }
+
+            // rethrow exceptions from all attempts.
+            throw new AggregateException(exceptions);
+        }
+
         private async Task<TaskResult> CompleteJobAsync(IJobServer jobServer, IExecutionContext jobContext, Pipelines.AgentJobRequestMessage message, TaskResult? taskResult = null)
         {
             jobContext.Debug($"Finishing: {message.JobDisplayName}");

src/Runner.Worker/StepsRunner.cs

@@ -1,12 +1,9 @@
 using System;
 using System.Collections.Generic;
-using System.Linq;
-using System.Text;
 using System.Threading;
 using System.Threading.Tasks;
 using GitHub.DistributedTask.Expressions2;
 using GitHub.DistributedTask.ObjectTemplating.Tokens;
-using GitHub.DistributedTask.Pipelines;
 using GitHub.DistributedTask.Pipelines.ContextData;
 using GitHub.DistributedTask.Pipelines.ObjectTemplating;
 using GitHub.DistributedTask.WebApi;
@@ -14,8 +11,6 @@ using GitHub.Runner.Common;
 using GitHub.Runner.Common.Util;
 using GitHub.Runner.Sdk;
 using GitHub.Runner.Worker.Expressions;
-using ObjectTemplating = GitHub.DistributedTask.ObjectTemplating;
-using Pipelines = GitHub.DistributedTask.Pipelines;
 
 namespace GitHub.Runner.Worker
 {
@@ -26,6 +21,8 @@ namespace GitHub.Runner.Worker
         string DisplayName { get; set; }
         IExecutionContext ExecutionContext { get; set; }
         TemplateToken Timeout { get; }
+        bool TryUpdateDisplayName(out bool updated);
+        bool EvaluateDisplayName(DictionaryContextData contextData, IExecutionContext context, out bool updated);
         Task RunAsync();
     }
 
@@ -195,6 +192,12 @@ namespace GitHub.Runner.Worker
                         }
                         else
                         {
+                            // This is our last, best chance to expand the display name.  (At this point, all the requirements for successful expansion should be met.)
+                            // That being said, evaluating the display name should still be considered as a "best effort" exercise.  (It's not critical or paramount.)
+                            // For that reason, we call a safe "Try..." wrapper method to ensure that any potential problems we encounter in evaluating the display name
+                            // don't interfere with our ultimate goal within this code block:  evaluation of the condition.
+                            step.TryUpdateDisplayName(out _);
+
                             try
                             {
                                 var templateEvaluator = step.ExecutionContext.ToPipelineTemplateEvaluator(conditionTraceWriter);
@@ -256,14 +259,6 @@ namespace GitHub.Runner.Worker
 
         private async Task RunStepAsync(IStep step, CancellationToken jobCancellationToken)
         {
-            // Check to see if we can expand the display name
-            if (step is IActionRunner actionRunner &&
-                actionRunner.Stage == ActionRunStage.Main &&
-                actionRunner.TryEvaluateDisplayName(step.ExecutionContext.ExpressionValues, step.ExecutionContext))
-            {
-                step.ExecutionContext.UpdateTimelineRecordDisplayName(actionRunner.DisplayName);
-            }
-
             // Start the step
             Trace.Info("Starting the step.");
             step.ExecutionContext.Debug($"Starting: {step.DisplayName}");

src/Sdk/Common/Common/Authentication/VssCredentialsExtension.cs

@@ -1,20 +0,0 @@
-using GitHub.Services.OAuth;
-
-namespace GitHub.Services.Common
-{
-    public static class VssCredentialsExtension
-    {
-        public static VssOAuthCredential ToOAuthCredentials(
-            this VssCredentials credentials)
-        {
-            if (credentials.Federated.CredentialType == VssCredentialsType.OAuth)
-            {
-                return credentials.Federated as VssOAuthCredential;
-            }
-            else
-            {
-                return null;
-            }
-        }
-    }
-}

src/Sdk/Common/Common/RawClientHttpRequestSettings.cs

@@ -184,9 +184,33 @@ namespace GitHub.Services.Common
             return settings;
         }
 
+        /// <summary>
+        /// Gets or sets the maximum size allowed for response content buffering.
+        /// </summary>
+        [DefaultValue(c_defaultContentBufferSize)]
+        public Int32 MaxContentBufferSize
+        {
+            get
+            {
+                return m_maxContentBufferSize;
+            }
+            set
+            {
+                ArgumentUtility.CheckForOutOfRange(value, nameof(value), 0, c_maxAllowedContentBufferSize);
+                m_maxContentBufferSize = value;
+            }
+        }
+
         private static Lazy<RawClientHttpRequestSettings> s_defaultSettings
             = new Lazy<RawClientHttpRequestSettings>(ConstructDefaultSettings);
 
+        private Int32 m_maxContentBufferSize;
+        // We will buffer a maximum of 1024MB in the message handler
+        private const Int32 c_maxAllowedContentBufferSize = 1024 * 1024 * 1024;
+
+        // We will buffer, by default, up to 512MB in the message handler
+        private const Int32 c_defaultContentBufferSize = 1024 * 1024 * 512;
+
         private const Int32 c_defaultMaxRetry = 3;
         private static readonly TimeSpan s_defaultTimeout = TimeSpan.FromSeconds(100); //default WebAPI timeout
         private ICollection<CultureInfo> m_acceptLanguages = new List<CultureInfo>();

src/Sdk/Common/Common/RawHttpMessageHandler.cs

@@ -9,23 +9,23 @@ using GitHub.Services.OAuth;
 
 namespace GitHub.Services.Common
 {
-    public class RawHttpMessageHandler: HttpMessageHandler
+    public class RawHttpMessageHandler : HttpMessageHandler
     {
         public RawHttpMessageHandler(
-            VssOAuthCredential credentials)
+            FederatedCredential credentials)
             : this(credentials, new RawClientHttpRequestSettings())
         {
         }
 
         public RawHttpMessageHandler(
-            VssOAuthCredential credentials,
+            FederatedCredential credentials,
             RawClientHttpRequestSettings settings)
             : this(credentials, settings, new HttpClientHandler())
         {
         }
 
         public RawHttpMessageHandler(
-            VssOAuthCredential credentials,
+            FederatedCredential credentials,
             RawClientHttpRequestSettings settings,
             HttpMessageHandler innerHandler)
         {
@@ -56,7 +56,7 @@ namespace GitHub.Services.Common
         /// <summary>
         /// Gets the credentials associated with this handler.
         /// </summary>
-        public VssOAuthCredential Credentials
+        public FederatedCredential Credentials
         {
             get;
             private set;
@@ -111,7 +111,7 @@ namespace GitHub.Services.Common
                 // Ensure that we attempt to use the most appropriate authentication mechanism by default.
                 if (m_tokenProvider == null)
                 {
-                    m_tokenProvider = this.Credentials.GetTokenProvider(request.RequestUri);
+                    m_tokenProvider = this.Credentials.CreateTokenProvider(request.RequestUri, null, null);
                 }
             }
 
@@ -120,6 +120,7 @@ namespace GitHub.Services.Common
             Boolean succeeded = false;
             HttpResponseMessageWrapper responseWrapper;
 
+            Boolean lastResponseDemandedProxyAuth = false;
             Int32 retries = m_maxAuthRetries;
             try
             {
@@ -138,7 +139,13 @@ namespace GitHub.Services.Common
 
                     // Let's start with sending a token
                     IssuedToken token = await m_tokenProvider.GetTokenAsync(null, tokenSource.Token).ConfigureAwait(false);
-                    ApplyToken(request, token);
+                    ApplyToken(request, token, applyICredentialsToWebProxy: lastResponseDemandedProxyAuth);
+
+                    // The WinHttpHandler will chunk any content that does not have a computed length which is
+                    // not what we want. By loading into a buffer up-front we bypass this behavior and there is
+                    // no difference in the normal HttpClientHandler behavior here since this is what they were
+                    // already doing.
+                    await BufferRequestContentAsync(request, tokenSource.Token).ConfigureAwait(false);
 
                     // ConfigureAwait(false) enables the continuation to be run outside any captured
                     // SyncronizationContext (such as ASP.NET's) which keeps things from deadlocking...
@@ -147,7 +154,8 @@ namespace GitHub.Services.Common
                     responseWrapper = new HttpResponseMessageWrapper(response);
 
                     var isUnAuthorized = responseWrapper.StatusCode == HttpStatusCode.Unauthorized;
-                    if (!isUnAuthorized)
+                    lastResponseDemandedProxyAuth = responseWrapper.StatusCode == HttpStatusCode.ProxyAuthenticationRequired;
+                    if (!isUnAuthorized && !lastResponseDemandedProxyAuth)
                     {
                         // Validate the token after it has been successfully authenticated with the server.
                         m_tokenProvider?.ValidateToken(token, responseWrapper);
@@ -211,15 +219,42 @@ namespace GitHub.Services.Common
             }
         }
 
+        private static async Task BufferRequestContentAsync(
+             HttpRequestMessage request,
+             CancellationToken cancellationToken)
+        {
+            if (request.Content != null &&
+                request.Headers.TransferEncodingChunked != true)
+            {
+                Int64? contentLength = request.Content.Headers.ContentLength;
+                if (contentLength == null)
+                {
+                    await request.Content.LoadIntoBufferAsync().EnforceCancellation(cancellationToken).ConfigureAwait(false);
+                }
+
+                // Explicitly turn off chunked encoding since we have computed the request content size
+                request.Headers.TransferEncodingChunked = false;
+            }
+        }
+
         private void ApplyToken(
             HttpRequestMessage request,
-            IssuedToken token)
+            IssuedToken token,
+            bool applyICredentialsToWebProxy = false)
         {
             switch (token)
             {
                 case null:
                     return;
                 case ICredentials credentialsToken:
+                    if (applyICredentialsToWebProxy)
+                    {
+                        HttpClientHandler httpClientHandler = m_transportHandler as HttpClientHandler;
+                        if (httpClientHandler != null && httpClientHandler.Proxy != null)
+                        {
+                            httpClientHandler.Proxy.Credentials = credentialsToken;
+                        }
+                    }
                     m_credentialWrapper.InnerCredentials = credentialsToken;
                     break;
                 default:
@@ -254,7 +289,7 @@ namespace GitHub.Services.Common
         private CredentialWrapper m_credentialWrapper;
         private object m_thisLock;
         private const Int32 m_maxAuthRetries = 3;
-        private VssOAuthTokenProvider m_tokenProvider;
+        private IssuedTokenProvider m_tokenProvider;
 
         //.Net Core does not attempt NTLM schema on Linux, unless ICredentials is a CredentialCache instance
         //This workaround may not be needed after this corefx fix is consumed: https://github.com/dotnet/corefx/pull/7923

src/Sdk/Common/Common/VssHttpMessageHandler.cs

@@ -1,4 +1,4 @@
-using System;
+using System;
 using System.Collections.Generic;
 using System.Linq;
 using System.Net;

src/Sdk/Common/Common/VssHttpRequestSettings.cs

@@ -1,4 +1,4 @@
-using System;
+using System;
 using System.Collections.Generic;
 using System.ComponentModel;
 using System.Globalization;

src/Sdk/DTExpressions2/Expressions2/Sdk/ExpressionNode.cs

@@ -1,6 +1,6 @@
-using System;
-using System.Collections.Generic;
+using System;
 using System.ComponentModel;
+using System.Linq;
 using GitHub.DistributedTask.Logging;
 
 namespace GitHub.DistributedTask.Expressions2.Sdk
@@ -55,7 +55,7 @@ namespace GitHub.DistributedTask.Expressions2.Sdk
             try
             {
                 // Evaluate
-                secretMasker = secretMasker?.Clone() ?? new SecretMasker();
+                secretMasker = secretMasker?.Clone() ?? new SecretMasker(Enumerable.Empty<ValueEncoder>());
                 trace = new EvaluationTraceWriter(trace, secretMasker);
                 var context = new EvaluationContext(trace, secretMasker, state, options, this);
                 trace.Info($"Evaluating: {ConvertToExpression()}");

src/Sdk/DTLogging/Logging/ISecretMasker.cs

@@ -1,4 +1,4 @@
-using System;
+using System;
 using System.ComponentModel;
 
 namespace GitHub.DistributedTask.Logging
@@ -8,7 +8,6 @@ namespace GitHub.DistributedTask.Logging
     {
         void AddRegex(String pattern);
         void AddValue(String value);
-        void AddValueEncoder(ValueEncoder encoder);
         ISecretMasker Clone();
         String MaskSecrets(String input);
     }

src/Sdk/DTLogging/Logging/SecretMasker.cs

@@ -1,4 +1,4 @@
-using System;
+using System;
 using System.Collections.Generic;
 using System.ComponentModel;
 using System.Linq;
@@ -10,11 +10,11 @@ namespace GitHub.DistributedTask.Logging
     [EditorBrowsable(EditorBrowsableState.Never)]
     public sealed class SecretMasker : ISecretMasker, IDisposable
     {
-        public SecretMasker()
+        public SecretMasker(IEnumerable<ValueEncoder> encoders)
         {
             m_originalValueSecrets = new HashSet<ValueSecret>();
             m_regexSecrets = new HashSet<RegexSecret>();
-            m_valueEncoders = new HashSet<ValueEncoder>();
+            m_valueEncoders = new HashSet<ValueEncoder>(encoders ?? Enumerable.Empty<ValueEncoder>());
             m_valueSecrets = new HashSet<ValueSecret>();
         }
 
@@ -104,15 +104,11 @@ namespace GitHub.DistributedTask.Logging
                 }
             }
 
-            // Compute the encoded values.
-            foreach (ValueEncoder valueEncoder in valueEncoders)
-            {
-                String encodedValue = valueEncoder(value);
-                if (!String.IsNullOrEmpty(encodedValue))
-                {
-                    valueSecrets.Add(new ValueSecret(encodedValue));
-                }
-            }
+            var secretVariations = valueEncoders.SelectMany(encoder => encoder(value))
+                                                .Where(variation => !string.IsNullOrEmpty(variation))
+                                                .Distinct()
+                                                .Select(variation => new ValueSecret(variation));
+            valueSecrets.AddRange(secretVariations);
 
             // Write section.
             try
@@ -135,69 +131,6 @@ namespace GitHub.DistributedTask.Logging
             }
         }
 
-        /// <summary>
-        /// This implementation assumes no more than one thread is adding regexes, values, or encoders at any given time.
-        /// </summary>
-        public void AddValueEncoder(ValueEncoder encoder)
-        {
-            ValueSecret[] originalSecrets;
-
-            // Read section.
-            try
-            {
-                m_lock.EnterReadLock();
-
-                // Test whether already added.
-                if (m_valueEncoders.Contains(encoder))
-                {
-                    return;
-                }
-
-                // Read the original value secrets.
-                originalSecrets = m_originalValueSecrets.ToArray();
-            }
-            finally
-            {
-                if (m_lock.IsReadLockHeld)
-                {
-                    m_lock.ExitReadLock();
-                }
-            }
-
-            // Compute the encoded values.
-            var encodedSecrets = new List<ValueSecret>();
-            foreach (ValueSecret originalSecret in originalSecrets)
-            {
-                String encodedValue = encoder(originalSecret.m_value);
-                if (!String.IsNullOrEmpty(encodedValue))
-                {
-                    encodedSecrets.Add(new ValueSecret(encodedValue));
-                }
-            }
-
-            // Write section.
-            try
-            {
-                m_lock.EnterWriteLock();
-
-                // Add the encoder.
-                m_valueEncoders.Add(encoder);
-
-                // Add the values.
-                foreach (ValueSecret encodedSecret in encodedSecrets)
-                {
-                    m_valueSecrets.Add(encodedSecret);
-                }
-            }
-            finally
-            {
-                if (m_lock.IsWriteLockHeld)
-                {
-                    m_lock.ExitWriteLock();
-                }
-            }
-        }
-
         public ISecretMasker Clone() => new SecretMasker(this);
 
         public void Dispose()

src/Sdk/DTLogging/Logging/ValueEncoders.cs

@@ -1,73 +1,97 @@
-using System;
+using System;
+using System.Collections.Generic;
 using System.ComponentModel;
+using System.Linq;
 using System.Security;
 using System.Text;
-using System.Text.RegularExpressions;
 using Newtonsoft.Json;
 
 namespace GitHub.DistributedTask.Logging
 {
     [EditorBrowsable(EditorBrowsableState.Never)]
-    public delegate String ValueEncoder(String value);
+    public delegate IEnumerable<string> ValueEncoder(string value);
 
     [EditorBrowsable(EditorBrowsableState.Never)]
     public static class ValueEncoders
     {
-        public static String Base64StringEscape(String value)
-        {
-            return Convert.ToBase64String(Encoding.UTF8.GetBytes(value));
-        }
 
-        // Base64 is 6 bits -> char
-        // A byte is 8 bits
-        // When end user doing somthing like base64(user:password)
-        // The length of the leading content will cause different base64 encoding result on the password
-        // So we add base64(value shifted 1 and two bytes) as secret as well. 
-        //    B1         B2      B3                    B4      B5     B6     B7
-        // 000000|00 0000|0000 00|000000|            000000|00 0000|0000 00|000000| 
-        //  Char1  Char2    Char3   Char4  
-        // See the above, the first byte has a character beginning at index 0, the second byte has a character beginning at index 4, the third byte has a character beginning at index 2 and then the pattern repeats
-        // We register byte offsets for all these possible values
-        public static String Base64StringEscapeShift1(String value)
+        public static IEnumerable<string> EnumerateBase64Variations(string value)
         {
-            return Base64StringEscapeShift(value, 1);
-        }
+            if (!string.IsNullOrEmpty(value))
+            {
+                // A byte is 8 bits.  A Base64 "digit" can hold a maximum of 6 bits (2^64 - 1, or values 0 to 63).
+                // As a result, many Unicode characters (including single-byte letters) cannot be represented using a single Base64 digit.
+                // Furthermore, on average a Base64 string will be about 33% longer than the original text.
+                // This is because it generally requires 4 Base64 digits to represent 3 Unicode bytes.  (4 / 3 ~ 1.33)
+                //
+                // Because of this 4:3 ratio (or, more precisely, 8 bits : 6 bits ratio), there's a cyclical pattern
+                // to when a byte boundary aligns with a Base64 digit boundary.
+                // The pattern repeats every 24 bits (the lowest common multiple of 8 and 6).
+                //
+                //                    |-----------24 bits-------------|-----------24 bits------------|
+                // Base64 Digits:     |digit 0|digit 1|digit 2|digit 3|digit 4|digit 5|digit 6|digit7|
+                // Allocated Bits:    aaaaaa  aaBBBB  BBBBcc  cccccc  DDDDDD  DDeeee  eeeeFF  FFFFFF
+                // Unicode chars:     |0th char |1st char |2nd char   |3rd char |4th char |5th char  |
 
-        public static String Base64StringEscapeShift2(String value)
-        {
-            return Base64StringEscapeShift(value, 2);
+                // Depending on alignment, the Base64-encoded secret can take any of 3 basic forms.
+                // For example, the Base64 digits representing "abc" could appear as any of the following:
+                //    "YWJj"     when aligned
+                //    ".!FiYw==" when preceded by 3x + 1 bytes
+                //    "..!hYmM=" when preceded by 3x + 2 bytes
+                // (where . represents an unrelated Base64 digit, ! represents a Base64 digit that should be masked, and x represents any non-negative integer)
+
+                var rawBytes = Encoding.UTF8.GetBytes(value);
+
+                for (var offset = 0; offset <= 2; offset++)
+                {
+                    var prunedBytes = rawBytes.Skip(offset).ToArray();
+                    if (prunedBytes.Length > 0)
+                    {
+                        // Don't include Base64 padding characters (=) in Base64 representations of the secret.
+                        // They don't represent anything interesting, so they don't need to be masked.
+                        // (Some clients omit the padding, so we want to be sure we recognize the secret regardless of whether the padding is present or not.)
+                        var buffer = new StringBuilder(Convert.ToBase64String(prunedBytes).TrimEnd(BASE64_PADDING_SUFFIX));
+                        yield return buffer.ToString();
+
+                        // Also, yield the RFC4648-equivalent RegEx.
+                        buffer.Replace('+', '-');
+                        buffer.Replace('/', '_');
+                        yield return buffer.ToString();
+                    }
+                }
+            }
         }
 
         // Used when we pass environment variables to docker to escape " with \"
-        public static String CommandLineArgumentEscape(String value)
+        public static IEnumerable<string> CommandLineArgumentEscape(string value)
         {
-            return value.Replace("\"", "\\\"");
+            yield return value.Replace("\"", "\\\"");
         }
 
-        public static String ExpressionStringEscape(String value)
+        public static IEnumerable<string> ExpressionStringEscape(string value)
         {
-            return Expressions2.Sdk.ExpressionUtility.StringEscape(value);
+            yield return Expressions2.Sdk.ExpressionUtility.StringEscape(value);
         }
 
-        public static String JsonStringEscape(String value)
+        public static IEnumerable<string> JsonStringEscape(string value)
         {
             // Convert to a JSON string and then remove the leading/trailing double-quote.
             String jsonString = JsonConvert.ToString(value);
             String jsonEscapedValue = jsonString.Substring(startIndex: 1, length: jsonString.Length - 2);
-            return jsonEscapedValue;
+            yield return jsonEscapedValue;
         }
 
-        public static String UriDataEscape(String value)
+        public static IEnumerable<string> UriDataEscape(string value)
         {
-            return UriDataEscape(value, 65519);
+            yield return UriDataEscape(value, 65519);
         }
 
-        public static String XmlDataEscape(String value)
+        public static IEnumerable<string> XmlDataEscape(string value)
         {
-            return SecurityElement.Escape(value);
+            yield return SecurityElement.Escape(value);
         }
 
-        public static String TrimDoubleQuotes(String value)
+        public static IEnumerable<string> TrimDoubleQuotes(string value)
         {
             var trimmed = string.Empty;
             if (!string.IsNullOrEmpty(value) &&
@@ -78,17 +102,17 @@ namespace GitHub.DistributedTask.Logging
                 trimmed = value.Substring(1, value.Length - 2);
             }
 
-            return trimmed;
+            yield return trimmed;
         }
 
-        public static String PowerShellPreAmpersandEscape(String value)
+        public static IEnumerable<string> PowerShellPreAmpersandEscape(string value)
         {
             // if the secret is passed to PS as a command and it causes an error, sections of it can be surrounded by color codes
-            // or printed individually. 
-            
+            // or printed individually.
+
             // The secret secretpart1&secretpart2&secretpart3 would be split into 2 sections:
             // 'secretpart1&secretpart2&' and 'secretpart3'. This method masks for the first section.
-            
+
             // The secret secretpart1&+secretpart2&secretpart3 would be split into 2 sections:
             // 'secretpart1&+' and (no 's') 'ecretpart2&secretpart3'. This method masks for the first section.
 
@@ -112,10 +136,10 @@ namespace GitHub.DistributedTask.Logging
                 }
             }
 
-            return trimmed;
+            yield return trimmed;
         }
 
-        public static String PowerShellPostAmpersandEscape(String value)
+        public static IEnumerable<string> PowerShellPostAmpersandEscape(string value)
         {
             var trimmed = string.Empty;
             if (!string.IsNullOrEmpty(value) && value.Contains("&"))
@@ -137,27 +161,10 @@ namespace GitHub.DistributedTask.Logging
                 }
             }
 
-            return trimmed;
+            yield return trimmed;
         }
 
-        private static string Base64StringEscapeShift(String value, int shift)
-        {
-            var bytes = Encoding.UTF8.GetBytes(value);
-            if (bytes.Length > shift)
-            {
-                var shiftArray = new byte[bytes.Length - shift];
-                Array.Copy(bytes, shift, shiftArray, 0, bytes.Length - shift);
-                return Convert.ToBase64String(shiftArray);
-            }
-            else
-            {
-                return Convert.ToBase64String(bytes);
-            }
-        }
-
-        private static String UriDataEscape(
-            String value,
-            Int32 maxSegmentSize)
+        private static string UriDataEscape(string value, Int32 maxSegmentSize)
         {
             if (value.Length <= maxSegmentSize)
             {
@@ -183,5 +190,7 @@ namespace GitHub.DistributedTask.Logging
 
             return result.ToString();
         }
+
+        private const char BASE64_PADDING_SUFFIX = '=';
     }
 }

src/Sdk/DTPipelines/Pipelines/AgentJobRequestMessage.cs

@@ -42,9 +42,10 @@ namespace GitHub.DistributedTask.Pipelines
             IList<String> fileTable,
             TemplateToken jobOutputs,
             IList<TemplateToken> defaults,
-            ActionsEnvironmentReference actionsEnvironment)
+            ActionsEnvironmentReference actionsEnvironment,
+            String messageType = JobRequestMessageTypes.PipelineAgentJobRequest)
         {
-            this.MessageType = JobRequestMessageTypes.PipelineAgentJobRequest;
+            this.MessageType = messageType;
             this.Plan = plan;
             this.JobId = jobId;
             this.JobDisplayName = jobDisplayName;

src/Sdk/DTPipelines/Pipelines/ObjectTemplating/PipelineTemplateEvaluator.cs

@@ -455,7 +455,6 @@ namespace GitHub.DistributedTask.Pipelines.ObjectTemplating
         private readonly String[] s_expressionValueNames = new[]
         {
             PipelineTemplateConstants.GitHub,
-            PipelineTemplateConstants.Needs,
             PipelineTemplateConstants.Strategy,
             PipelineTemplateConstants.Matrix,
             PipelineTemplateConstants.Needs,

src/Sdk/DTPipelines/workflow-v1.0.json

@@ -222,6 +222,9 @@
     },
 
     "job-outputs": {
+      "context": [
+        "matrix"
+      ],
       "mapping": {
         "loose-key-type": "non-empty-string",
         "loose-value-type": "string-runner-context"

src/Sdk/DTWebApi/WebApi/ListRunnersResponse.cs

@@ -0,0 +1,48 @@
+using GitHub.Services.WebApi;
+using System;
+using System.Collections.Generic;
+using System.Runtime.Serialization;
+using Newtonsoft.Json;
+using System.Linq;
+
+namespace GitHub.DistributedTask.WebApi
+{
+
+    public class ListRunnersResponse
+    {
+        public ListRunnersResponse()
+        {
+        }
+
+        public ListRunnersResponse(ListRunnersResponse responseToBeCloned)
+        {
+            this.TotalCount = responseToBeCloned.TotalCount;
+            this.Runners = responseToBeCloned.Runners;
+        }
+
+        [JsonProperty("total_count")]
+        public int TotalCount
+        {
+            get;
+            set;
+        }
+
+        [JsonProperty("runners")]
+        public List<Runner> Runners
+        {
+            get;
+            set;
+        }
+
+        public ListRunnersResponse Clone()
+        {
+            return new ListRunnersResponse(this);
+        }
+
+        public List<TaskAgent> ToTaskAgents()
+        {
+            return Runners.Select(runner => new TaskAgent() { Name = runner.Name }).ToList();
+        }
+    }
+
+}

src/Sdk/DTWebApi/WebApi/Runner.cs

@@ -0,0 +1,63 @@
+using System;
+using Newtonsoft.Json;
+
+namespace GitHub.DistributedTask.WebApi
+{
+    public class Runner
+    {
+
+        public class Authorization
+        {
+            /// <summary>
+            /// The url to refresh tokens
+            /// </summary> 
+            [JsonProperty("authorization_url")]
+            public Uri AuthorizationUrl
+            {
+                get;
+                internal set;
+            }
+
+            /// <summary>
+            /// The url to connect to to poll for messages
+            /// </summary> 
+            [JsonProperty("server_url")]
+            public string ServerUrl
+            {
+                get;
+                internal set;
+            }
+
+            /// <summary>
+            /// The client id to use when connecting to the authorization_url
+            /// </summary>
+            [JsonProperty("client_id")]
+            public string ClientId
+            {
+                get;
+                internal set;
+            }
+        }
+
+        [JsonProperty("name")]
+        public string Name
+        {
+            get;
+            internal set;
+        }
+
+        [JsonProperty("id")]
+        public Int32 Id
+        {
+            get;
+            internal set;
+        }
+
+        [JsonProperty("authorization")]
+        public Authorization RunnerAuthorization
+        {
+            get;
+            internal set;
+        }
+    }
+}

src/Sdk/DTWebApi/WebApi/RunnerGroup.cs

@@ -0,0 +1,98 @@
+using GitHub.Services.WebApi;
+using System;
+using System.Runtime.Serialization;
+using System.ComponentModel;
+using System.Collections.Generic;
+using Newtonsoft.Json;
+using System.Linq;
+
+namespace GitHub.DistributedTask.WebApi
+{
+    /// <summary>
+    /// An organization-level grouping of runners.
+    /// </summary>
+    [DataContract]
+    public class RunnerGroup
+    {
+        internal RunnerGroup()
+        {
+        }
+
+        public RunnerGroup(String name)
+        {
+            this.Name = name;
+        }
+
+        private RunnerGroup(RunnerGroup poolToBeCloned)
+        {
+            this.Id = poolToBeCloned.Id;
+            this.IsHosted = poolToBeCloned.IsHosted;
+            this.Name = poolToBeCloned.Name;
+            this.IsDefault = poolToBeCloned.IsDefault;
+        }
+
+        [DataMember(EmitDefaultValue = false)]
+        [JsonProperty("id")]
+        public Int32 Id
+        {
+            get;
+            set;
+        }
+
+        [DataMember(EmitDefaultValue = false)]
+        [JsonProperty("name")]
+        public String Name
+        {
+            get;
+            set;
+        }
+
+        /// <summary>
+        /// Gets or sets a value indicating whether or not this pool is internal and can't be modified by users
+        /// </summary>
+        [DataMember]
+        [JsonProperty("default")]
+        public bool IsDefault
+        {
+            get;
+            set;
+        }
+
+        /// <summary>
+        /// Gets or sets a value indicating whether or not this pool is managed by the service.
+        /// </summary>
+        [DataMember]
+        [JsonProperty("is_hosted")]
+        public Boolean IsHosted
+        {
+            get;
+            set;
+        }
+    }
+
+    public class RunnerGroupList
+    {
+        public RunnerGroupList()
+        {
+            this.RunnerGroups = new List<RunnerGroup>();
+        }
+
+        public List<TaskAgentPool> ToAgentPoolList()
+        {
+            var agentPools = this.RunnerGroups.Select(x => new TaskAgentPool(x.Name)
+            {
+                Id = x.Id,
+                IsHosted = x.IsHosted,
+                IsInternal = x.IsDefault
+            }).ToList();
+
+            return agentPools;
+        }
+
+        [JsonProperty("runner_groups")]
+        public List<RunnerGroup> RunnerGroups { get; set; }
+
+        [JsonProperty("total_count")]
+        public int Count { get; set; }
+    }
+}

src/Sdk/DTWebApi/WebApi/TaskAttachment.cs

@@ -1,4 +1,4 @@
-using GitHub.Services.Common;
+using GitHub.Services.Common;
 using GitHub.Services.WebApi;
 using System;
 using System.Runtime.Serialization;
@@ -100,6 +100,7 @@ namespace GitHub.DistributedTask.WebApi
         public static readonly String Summary = "DistributedTask.Core.Summary";
         public static readonly String FileAttachment = "DistributedTask.Core.FileAttachment";
         public static readonly String DiagnosticLog = "DistributedTask.Core.DiagnosticLog";
+        public static readonly String ResultsLog = "Results.Core.Log";
     }
 
     [GenerateAllConstants]

src/Sdk/RSWebApi/Contracts/AcquireJobRequest.cs

@@ -0,0 +1,13 @@
+using System.Collections.Generic;
+using System.Runtime.Serialization;
+using GitHub.DistributedTask.WebApi;
+
+namespace GitHub.Actions.RunService.WebApi
+{
+    [DataContract]
+    public class AcquireJobRequest
+    {
+        [DataMember(Name = "streamId", EmitDefaultValue = false)]
+        public string StreamID { get; set; }
+    }
+}

src/Sdk/RSWebApi/Contracts/CompleteJobRequest.cs

@@ -0,0 +1,26 @@
+using System;
+using System.Collections.Generic;
+using System.Runtime.Serialization;
+using GitHub.DistributedTask.WebApi;
+
+namespace GitHub.Actions.RunService.WebApi
+{
+    [DataContract]
+    public class CompleteJobRequest
+    {
+        [DataMember(Name = "planId", EmitDefaultValue = false)]
+        public Guid PlanID { get; set; }
+        
+        [DataMember(Name = "jobId", EmitDefaultValue = false)]
+        public Guid JobID { get; set; }
+        
+        [DataMember(Name = "conclusion")]
+        public TaskResult Conclusion { get; set; }
+        
+        [DataMember(Name = "outputs", EmitDefaultValue = false)]
+        public Dictionary<string, VariableValue> Outputs { get; set; }   
+        
+        [DataMember(Name = "stepResults", EmitDefaultValue = false)]
+        public IList<StepResult> StepResults { get; set; }
+    }
+}

src/Sdk/RSWebApi/Contracts/RenewJobRequest.cs

@@ -0,0 +1,15 @@
+using System;
+using System.Runtime.Serialization;
+
+namespace GitHub.Actions.RunService.WebApi
+{
+    [DataContract]
+    public class RenewJobRequest
+    {
+        [DataMember(Name = "planId", EmitDefaultValue = false)]
+        public Guid PlanID { get; set; }
+
+        [DataMember(Name = "jobId", EmitDefaultValue = false)]
+        public Guid JobID { get; set; }
+    }
+}

src/Sdk/RSWebApi/Contracts/RenewJobResponse.cs

@@ -0,0 +1,16 @@
+using System;
+using System.Runtime.Serialization;
+
+namespace Sdk.RSWebApi.Contracts
+{
+    [DataContract]
+    public class RenewJobResponse
+    {
+        [DataMember]
+        public DateTime LockedUntil
+        {
+            get;
+            internal set;
+        }
+    }
+}

src/Sdk/RSWebApi/Contracts/StepResult.cs

@@ -0,0 +1,38 @@
+using System;
+using System.Runtime.Serialization;
+using System.Threading.Tasks;
+using GitHub.DistributedTask.WebApi;
+
+namespace GitHub.Actions.RunService.WebApi
+{
+    [DataContract]
+    public class StepResult
+    {
+        [DataMember(Name = "external_id", EmitDefaultValue = false)]
+        public Guid ExternalID { get; set; }
+
+        [DataMember(Name = "number", EmitDefaultValue = false)]
+        public int? Number { get; set; }
+
+        [DataMember(Name = "name", EmitDefaultValue = false)]
+        public string Name { get; set; }
+
+        [DataMember(Name = "status")]
+        public TimelineRecordState? Status { get; set; }
+
+        [DataMember(Name = "conclusion")]
+        public TaskResult? Conclusion { get; set; }
+
+        [DataMember(Name = "started_at", EmitDefaultValue = false)]
+        public DateTime? StartedAt { get; set; }
+
+        [DataMember(Name = "completed_at", EmitDefaultValue = false)]
+        public DateTime? CompletedAt { get; set; }
+
+        [DataMember(Name = "completed_log_url", EmitDefaultValue = false)]
+        public string CompletedLogURL { get; set; }
+
+        [DataMember(Name = "completed_log_lines", EmitDefaultValue = false)]
+        public long? CompletedLogLines { get; set; }
+    }
+}

src/Sdk/RSWebApi/RunServiceHttpClient.cs

@@ -0,0 +1,131 @@
+using System;
+using System.Collections.Generic;
+using System.Net.Http;
+using System.Threading;
+using System.Threading.Tasks;
+using GitHub.DistributedTask.Pipelines;
+using GitHub.DistributedTask.WebApi;
+using GitHub.Services.Common;
+using GitHub.Services.OAuth;
+using GitHub.Services.WebApi;
+using Sdk.RSWebApi.Contracts;
+using Sdk.WebApi.WebApi;
+
+namespace GitHub.Actions.RunService.WebApi
+{
+    public class RunServiceHttpClient : RawHttpClientBase
+    {
+        public RunServiceHttpClient(
+            Uri baseUrl,
+            VssOAuthCredential credentials)
+            : base(baseUrl, credentials)
+        {
+        }
+
+        public RunServiceHttpClient(
+            Uri baseUrl,
+            VssOAuthCredential credentials,
+            RawClientHttpRequestSettings settings)
+            : base(baseUrl, credentials, settings)
+        {
+        }
+
+        public RunServiceHttpClient(
+            Uri baseUrl,
+            VssOAuthCredential credentials,
+            params DelegatingHandler[] handlers)
+            : base(baseUrl, credentials, handlers)
+        {
+        }
+
+        public RunServiceHttpClient(
+            Uri baseUrl,
+            VssOAuthCredential credentials,
+            RawClientHttpRequestSettings settings,
+            params DelegatingHandler[] handlers)
+            : base(baseUrl, credentials, settings, handlers)
+        {
+        }
+
+        public RunServiceHttpClient(
+            Uri baseUrl,
+            HttpMessageHandler pipeline,
+            Boolean disposeHandler)
+            : base(baseUrl, pipeline, disposeHandler)
+        {
+        }
+
+        public Task<AgentJobRequestMessage> GetJobMessageAsync(
+            Uri requestUri,
+            string messageId,
+            CancellationToken cancellationToken = default)
+        {
+            HttpMethod httpMethod = new HttpMethod("POST");
+            var payload = new AcquireJobRequest
+            {
+                StreamID = messageId
+            };
+
+            requestUri = new Uri(requestUri, "acquirejob");
+
+            var requestContent = new ObjectContent<AcquireJobRequest>(payload, new VssJsonMediaTypeFormatter(true));
+            return SendAsync<AgentJobRequestMessage>(
+                httpMethod,
+                requestUri: requestUri,
+                content: requestContent,
+                cancellationToken: cancellationToken);
+        }
+
+        public Task CompleteJobAsync(
+            Uri requestUri,
+            Guid planId,
+            Guid jobId,
+            TaskResult result,
+            Dictionary<String, VariableValue> outputs,
+            IList<StepResult> stepResults,
+            CancellationToken cancellationToken = default)
+        {
+            HttpMethod httpMethod = new HttpMethod("POST");
+            var payload = new CompleteJobRequest()
+            {
+                PlanID = planId,
+                JobID = jobId,
+                Conclusion = result,
+                Outputs = outputs,
+                StepResults = stepResults
+            };
+
+            requestUri = new Uri(requestUri, "completejob");
+
+            var requestContent = new ObjectContent<CompleteJobRequest>(payload, new VssJsonMediaTypeFormatter(true));
+            return SendAsync(
+                    httpMethod,
+                    requestUri,
+                    content: requestContent,
+                    cancellationToken: cancellationToken);
+        }
+
+        public Task<RenewJobResponse> RenewJobAsync(
+            Uri requestUri,
+            Guid planId,
+            Guid jobId,
+            CancellationToken cancellationToken = default)
+        {
+            HttpMethod httpMethod = new HttpMethod("POST");
+            var payload = new RenewJobRequest()
+            {
+                PlanID = planId,
+                JobID = jobId
+            };
+
+            requestUri = new Uri(requestUri, "renewjob");
+
+            var requestContent = new ObjectContent<RenewJobRequest>(payload, new VssJsonMediaTypeFormatter(true));
+            return SendAsync<RenewJobResponse>(
+                httpMethod,
+                requestUri,
+                content: requestContent,
+                cancellationToken: cancellationToken);
+        }
+    }
+}

src/Sdk/WebApi/WebApi/BrokerHttpClient.cs

@@ -1,25 +1,28 @@
-using System;
+using System;
+using System.Collections.Generic;
 using System.Net.Http;
 using System.Threading;
 using System.Threading.Tasks;
+using GitHub.DistributedTask.Pipelines;
+using GitHub.DistributedTask.WebApi;
 using GitHub.Services.Common;
 using GitHub.Services.OAuth;
 using GitHub.Services.WebApi;
+using Sdk.RSWebApi.Contracts;
 using Sdk.WebApi.WebApi;
 
-namespace GitHub.DistributedTask.WebApi
+namespace GitHub.Actions.RunService.WebApi
 {
-    [ResourceArea(TaskResourceIds.AreaId)]
-    public class RunServiceHttpClient : RawHttpClientBase
+    public class BrokerHttpClient : RawHttpClientBase
     {
-        public RunServiceHttpClient(
+        public BrokerHttpClient(
             Uri baseUrl,
             VssOAuthCredential credentials)
             : base(baseUrl, credentials)
         {
         }
 
-        public RunServiceHttpClient(
+        public BrokerHttpClient(
             Uri baseUrl,
             VssOAuthCredential credentials,
             RawClientHttpRequestSettings settings)
@@ -27,7 +30,7 @@ namespace GitHub.DistributedTask.WebApi
         {
         }
 
-        public RunServiceHttpClient(
+        public BrokerHttpClient(
             Uri baseUrl,
             VssOAuthCredential credentials,
             params DelegatingHandler[] handlers)
@@ -35,7 +38,7 @@ namespace GitHub.DistributedTask.WebApi
         {
         }
 
-        public RunServiceHttpClient(
+        public BrokerHttpClient(
             Uri baseUrl,
             VssOAuthCredential credentials,
             RawClientHttpRequestSettings settings,
@@ -44,7 +47,7 @@ namespace GitHub.DistributedTask.WebApi
         {
         }
 
-        public RunServiceHttpClient(
+        public BrokerHttpClient(
             Uri baseUrl,
             HttpMessageHandler pipeline,
             Boolean disposeHandler)
@@ -52,23 +55,29 @@ namespace GitHub.DistributedTask.WebApi
         {
         }
 
-        public Task<Pipelines.AgentJobRequestMessage> GetJobMessageAsync(
-            Uri requestUri,
-            string messageId,
-            CancellationToken cancellationToken = default)
+        public Task<TaskAgentMessage> GetRunnerMessageAsync(
+            string runnerVersion,
+            TaskAgentStatus? status,
+            CancellationToken cancellationToken = default
+        )
         {
-            HttpMethod httpMethod = new HttpMethod("POST");
-            var payload = new {
-                StreamID = messageId
-            };
+            var requestUri = new Uri(Client.BaseAddress, "message");
 
-            var payloadJson = JsonUtility.ToString(payload);
-            var requestContent = new StringContent(payloadJson, System.Text.Encoding.UTF8, "application/json");
-            return SendAsync<Pipelines.AgentJobRequestMessage>(
-                httpMethod,
-                additionalHeaders: null,
+            List<KeyValuePair<string, string>> queryParams = new List<KeyValuePair<string, string>>();
+
+            if (status != null)
+            {
+                queryParams.Add("status", status.Value.ToString());
+            }
+            if (runnerVersion != null)
+            {
+                queryParams.Add("runnerVersion", runnerVersion);
+            }
+
+            return SendAsync<TaskAgentMessage>(
+                new HttpMethod("GET"),
                 requestUri: requestUri,
-                content: requestContent,
+                queryParameters: queryParams,
                 cancellationToken: cancellationToken);
         }
     }

src/Sdk/WebApi/WebApi/Contracts.cs

@@ -1,3 +1,4 @@
+using System.Collections.Generic;
 using System.Runtime.Serialization;
 using Newtonsoft.Json;
 using Newtonsoft.Json.Serialization;
@@ -46,12 +47,126 @@ namespace GitHub.Services.Results.Contracts
 
     [DataContract]
     [JsonObject(NamingStrategyType = typeof(SnakeCaseNamingStrategy))]
-    public class CreateStepSummaryMetadataResponse
+    public class GetSignedJobLogsURLRequest
+    {
+        [DataMember]
+        public string WorkflowJobRunBackendId;
+        [DataMember]
+        public string WorkflowRunBackendId;
+    }
+
+    [DataContract]
+    [JsonObject(NamingStrategyType = typeof(SnakeCaseNamingStrategy))]
+    public class GetSignedJobLogsURLResponse
+    {
+        [DataMember]
+        public string LogsUrl;
+        [DataMember]
+        public string BlobStorageType;
+    }
+
+    [DataContract]
+    [JsonObject(NamingStrategyType = typeof(SnakeCaseNamingStrategy))]
+    public class GetSignedStepLogsURLRequest
+    {
+        [DataMember]
+        public string WorkflowJobRunBackendId;
+        [DataMember]
+        public string WorkflowRunBackendId;
+        [DataMember]
+        public string StepBackendId;
+    }
+
+    [DataContract]
+    [JsonObject(NamingStrategyType = typeof(SnakeCaseNamingStrategy))]
+    public class GetSignedStepLogsURLResponse
+    {
+        [DataMember]
+        public string LogsUrl;
+        [DataMember]
+        public string BlobStorageType;
+        [DataMember]
+        public long SoftSizeLimit;
+    }
+
+    [DataContract]
+    [JsonObject(NamingStrategyType = typeof(SnakeCaseNamingStrategy))]
+    public class JobLogsMetadataCreate
+    {
+        [DataMember]
+        public string WorkflowRunBackendId;
+        [DataMember]
+        public string WorkflowJobRunBackendId;
+        [DataMember]
+        public string UploadedAt;
+        [DataMember]
+        public long LineCount;
+    }
+
+    [DataContract]
+    [JsonObject(NamingStrategyType = typeof(SnakeCaseNamingStrategy))]
+    public class StepLogsMetadataCreate
+    {
+        [DataMember]
+        public string WorkflowRunBackendId;
+        [DataMember]
+        public string WorkflowJobRunBackendId;
+        [DataMember]
+        public string StepBackendId;
+        [DataMember]
+        public string UploadedAt;
+        [DataMember]
+        public long LineCount;
+    }
+
+    [DataContract]
+    [JsonObject(NamingStrategyType = typeof(SnakeCaseNamingStrategy))]
+    public class CreateMetadataResponse
     {
         [DataMember]
         public bool Ok;
     }
 
+    [DataContract]
+    [JsonObject(NamingStrategyType = typeof(SnakeCaseNamingStrategy))]
+    public class StepsUpdateRequest
+    {
+        [DataMember]
+        public IEnumerable<Step> Steps;
+        [DataMember]
+        public long ChangeOrder;
+        [DataMember]
+        public string WorkflowJobRunBackendId;
+        [DataMember]
+        public string WorkflowRunBackendId;
+    }
+
+    [DataContract]
+    [JsonObject(NamingStrategyType = typeof(SnakeCaseNamingStrategy))]
+    public class Step
+    {
+        [DataMember]
+        public string ExternalId;
+        [DataMember]
+        public int Number;
+        [DataMember]
+        public string Name;
+        [DataMember]
+        public Status Status;
+        [DataMember]
+        public string StartedAt;
+        [DataMember]
+        public string CompletedAt;
+    }
+
+    public enum Status
+    {
+        StatusUnknown = 0,
+        StatusInProgress = 3,
+        StatusPending = 5,
+        StatusCompleted = 6
+    }
+
     public static class BlobStorageTypes
     {
         public static readonly string AzureBlobStorage = "BLOB_STORAGE_TYPE_AZURE";

src/Sdk/WebApi/WebApi/RawHttpClientBase.cs

@@ -101,6 +101,17 @@ namespace Sdk.WebApi.WebApi
             }
         }
 
+        protected Task<T> SendAsync<T>(
+            HttpMethod method,
+            Uri requestUri,
+            HttpContent content = null,
+            IEnumerable<KeyValuePair<String, String>> queryParameters = null,
+            Object userState = null,
+            CancellationToken cancellationToken = default(CancellationToken))
+        {
+            return SendAsync<T>(method, null, requestUri, content, queryParameters, userState, cancellationToken);
+        }
+
         protected async Task<T> SendAsync<T>(
             HttpMethod method,
             IEnumerable<KeyValuePair<String, String>> additionalHeaders,

src/Sdk/WebApi/WebApi/ResultsHttpClient.cs

@@ -1,11 +1,16 @@
 using System;
+using System.Collections.Generic;
+using System.Diagnostics;
 using System.IO;
+using System.Linq;
 using System.Net.Http;
 using System.Net.Http.Headers;
 using System.Threading;
 using System.Threading.Tasks;
-using GitHub.Services.Results.Contracts;
 using System.Net.Http.Formatting;
+using GitHub.DistributedTask.WebApi;
+using GitHub.Services.Common;
+using GitHub.Services.Results.Contracts;
 using Sdk.WebApi.WebApi;
 
 namespace GitHub.Services.Results.Client
@@ -22,70 +27,141 @@ namespace GitHub.Services.Results.Client
             m_token = token;
             m_resultsServiceUrl = baseUrl;
             m_formatter = new JsonMediaTypeFormatter();
+            m_changeIdCounter = 1;
         }
 
-        public async Task<GetSignedStepSummaryURLResponse> GetStepSummaryUploadUrlAsync(string planId, string jobId, string stepId, CancellationToken cancellationToken)
+        // Get Sas URL calls
+        private async Task<T> GetResultsSignedURLResponse<R, T>(Uri uri, CancellationToken cancellationToken, R request)
         {
-            var request = new GetSignedStepSummaryURLRequest()
-            {
-                WorkflowJobRunBackendId= jobId,
-                WorkflowRunBackendId= planId,
-                StepBackendId= stepId
-            };
-
-            var stepSummaryUploadRequest = new Uri(m_resultsServiceUrl, "twirp/results.services.receiver.Receiver/GetStepSummarySignedBlobURL");
-
-            using (HttpRequestMessage requestMessage = new HttpRequestMessage(HttpMethod.Post, stepSummaryUploadRequest))
+            using (HttpRequestMessage requestMessage = new HttpRequestMessage(HttpMethod.Post, uri))
             {
                 requestMessage.Headers.Authorization = new AuthenticationHeaderValue("Bearer", m_token);
                 requestMessage.Headers.Accept.Add(MediaTypeWithQualityHeaderValue.Parse("application/json"));
 
-                using (HttpContent content = new ObjectContent<GetSignedStepSummaryURLRequest>(request, m_formatter))
+                using (HttpContent content = new ObjectContent<R>(request, m_formatter))
                 {
                     requestMessage.Content = content;
                     using (var response = await SendAsync(requestMessage, HttpCompletionOption.ResponseContentRead, cancellationToken: cancellationToken))
                     {
-                        return await ReadJsonContentAsync<GetSignedStepSummaryURLResponse>(response, cancellationToken);
+                        return await ReadJsonContentAsync<T>(response, cancellationToken);
                     }
                 }
             }
         }
 
-        private async Task StepSummaryUploadCompleteAsync(string planId, string jobId, string stepId, long size, CancellationToken cancellationToken)
+        private async Task<GetSignedStepSummaryURLResponse> GetStepSummaryUploadUrlAsync(string planId, string jobId, Guid stepId, CancellationToken cancellationToken)
         {
-            var timestamp = DateTime.UtcNow.ToString("yyyy-MM-dd'T'HH:mm:ss.fffK");
-            var request = new StepSummaryMetadataCreate()
+            var request = new GetSignedStepSummaryURLRequest()
             {
-                WorkflowJobRunBackendId= jobId,
-                WorkflowRunBackendId= planId,
-                StepBackendId = stepId,
-                Size = size,
-                UploadedAt = timestamp
+                WorkflowJobRunBackendId = jobId,
+                WorkflowRunBackendId = planId,
+                StepBackendId = stepId.ToString()
             };
 
-            var stepSummaryUploadCompleteRequest = new Uri(m_resultsServiceUrl, "twirp/results.services.receiver.Receiver/CreateStepSummaryMetadata");
+            var getStepSummarySignedBlobURLEndpoint = new Uri(m_resultsServiceUrl, Constants.GetStepSummarySignedBlobURL);
 
-            using (HttpRequestMessage requestMessage = new HttpRequestMessage(HttpMethod.Post, stepSummaryUploadCompleteRequest))
+            return await GetResultsSignedURLResponse<GetSignedStepSummaryURLRequest, GetSignedStepSummaryURLResponse>(getStepSummarySignedBlobURLEndpoint, cancellationToken, request);
+        }
+
+        private async Task<GetSignedStepLogsURLResponse> GetStepLogUploadUrlAsync(string planId, string jobId, Guid stepId, CancellationToken cancellationToken)
+        {
+            var request = new GetSignedStepLogsURLRequest()
+            {
+                WorkflowJobRunBackendId = jobId,
+                WorkflowRunBackendId = planId,
+                StepBackendId = stepId.ToString(),
+            };
+
+            var getStepLogsSignedBlobURLEndpoint = new Uri(m_resultsServiceUrl, Constants.GetStepLogsSignedBlobURL);
+
+            return await GetResultsSignedURLResponse<GetSignedStepLogsURLRequest, GetSignedStepLogsURLResponse>(getStepLogsSignedBlobURLEndpoint, cancellationToken, request);
+        }
+
+        private async Task<GetSignedJobLogsURLResponse> GetJobLogUploadUrlAsync(string planId, string jobId, CancellationToken cancellationToken)
+        {
+            var request = new GetSignedJobLogsURLRequest()
+            {
+                WorkflowJobRunBackendId = jobId,
+                WorkflowRunBackendId = planId,
+            };
+
+            var getJobLogsSignedBlobURLEndpoint = new Uri(m_resultsServiceUrl, Constants.GetJobLogsSignedBlobURL);
+
+            return await GetResultsSignedURLResponse<GetSignedJobLogsURLRequest, GetSignedJobLogsURLResponse>(getJobLogsSignedBlobURLEndpoint, cancellationToken, request);
+        }
+
+        // Create metadata calls
+
+        private async Task SendRequest<R>(Uri uri, CancellationToken cancellationToken, R request, string timestamp)
+        {
+            using (HttpRequestMessage requestMessage = new HttpRequestMessage(HttpMethod.Post, uri))
             {
                 requestMessage.Headers.Authorization = new AuthenticationHeaderValue("Bearer", m_token);
                 requestMessage.Headers.Accept.Add(MediaTypeWithQualityHeaderValue.Parse("application/json"));
 
-                using (HttpContent content = new ObjectContent<StepSummaryMetadataCreate>(request, m_formatter))
+                using (HttpContent content = new ObjectContent<R>(request, m_formatter))
                 {
                     requestMessage.Content = content;
                     using (var response = await SendAsync(requestMessage, HttpCompletionOption.ResponseContentRead, cancellationToken: cancellationToken))
                     {
-                        var jsonResponse = await ReadJsonContentAsync<CreateStepSummaryMetadataResponse>(response, cancellationToken);
+                        var jsonResponse = await ReadJsonContentAsync<CreateMetadataResponse>(response, cancellationToken);
                         if (!jsonResponse.Ok)
                         {
-                            throw new Exception($"Failed to mark step summary upload as complete, status code: {response.StatusCode}, ok: {jsonResponse.Ok}, size: {size}, timestamp: {timestamp}");
+                            throw new Exception($"Failed to mark {typeof(R).Name} upload as complete, status code: {response.StatusCode}, ok: {jsonResponse.Ok}, timestamp: {timestamp}");
                         }
                     }
                 }
             }
         }
 
-        private async Task<HttpResponseMessage> UploadFileAsync(string url, string blobStorageType, FileStream file, CancellationToken cancellationToken)
+        private async Task StepSummaryUploadCompleteAsync(string planId, string jobId, Guid stepId, long size, CancellationToken cancellationToken)
+        {
+            var timestamp = DateTime.UtcNow.ToString(Constants.TimestampFormat);
+            var request = new StepSummaryMetadataCreate()
+            {
+                WorkflowJobRunBackendId = jobId,
+                WorkflowRunBackendId = planId,
+                StepBackendId = stepId.ToString(),
+                Size = size,
+                UploadedAt = timestamp
+            };
+
+            var createStepSummaryMetadataEndpoint = new Uri(m_resultsServiceUrl, Constants.CreateStepSummaryMetadata);
+            await SendRequest<StepSummaryMetadataCreate>(createStepSummaryMetadataEndpoint, cancellationToken, request, timestamp);
+        }
+
+        private async Task StepLogUploadCompleteAsync(string planId, string jobId, Guid stepId, long lineCount, CancellationToken cancellationToken)
+        {
+            var timestamp = DateTime.UtcNow.ToString(Constants.TimestampFormat);
+            var request = new StepLogsMetadataCreate()
+            {
+                WorkflowJobRunBackendId = jobId,
+                WorkflowRunBackendId = planId,
+                StepBackendId = stepId.ToString(),
+                UploadedAt = timestamp,
+                LineCount = lineCount,
+            };
+
+            var createStepLogsMetadataEndpoint = new Uri(m_resultsServiceUrl, Constants.CreateStepLogsMetadata);
+            await SendRequest<StepLogsMetadataCreate>(createStepLogsMetadataEndpoint, cancellationToken, request, timestamp);
+        }
+
+        private async Task JobLogUploadCompleteAsync(string planId, string jobId, long lineCount, CancellationToken cancellationToken)
+        {
+            var timestamp = DateTime.UtcNow.ToString(Constants.TimestampFormat);
+            var request = new JobLogsMetadataCreate()
+            {
+                WorkflowJobRunBackendId = jobId,
+                WorkflowRunBackendId = planId,
+                UploadedAt = timestamp,
+                LineCount = lineCount,
+            };
+
+            var createJobLogsMetadataEndpoint = new Uri(m_resultsServiceUrl, Constants.CreateJobLogsMetadata);
+            await SendRequest<JobLogsMetadataCreate>(createJobLogsMetadataEndpoint, cancellationToken, request, timestamp);
+        }
+
+        private async Task<HttpResponseMessage> UploadBlockFileAsync(string url, string blobStorageType, FileStream file, CancellationToken cancellationToken)
         {
             // Upload the file to the url
             var request = new HttpRequestMessage(HttpMethod.Put, url)
@@ -95,7 +171,7 @@ namespace GitHub.Services.Results.Client
 
             if (blobStorageType == BlobStorageTypes.AzureBlobStorage)
             {
-                request.Content.Headers.Add("x-ms-blob-type", "BlockBlob");
+                request.Content.Headers.Add(Constants.AzureBlobTypeHeader, Constants.AzureBlockBlob);
             }
 
             using (var response = await SendAsync(request, HttpCompletionOption.ResponseHeadersRead, userState: null, cancellationToken))
@@ -108,11 +184,62 @@ namespace GitHub.Services.Results.Client
             }
         }
 
+        private async Task<HttpResponseMessage> CreateAppendFileAsync(string url, string blobStorageType, CancellationToken cancellationToken)
+        {
+            var request = new HttpRequestMessage(HttpMethod.Put, url)
+            {
+                Content = new StringContent("")
+            };
+            if (blobStorageType == BlobStorageTypes.AzureBlobStorage)
+            {
+                request.Content.Headers.Add(Constants.AzureBlobTypeHeader, Constants.AzureAppendBlob);
+                request.Content.Headers.Add("Content-Length", "0");
+            }
+
+            using (var response = await SendAsync(request, HttpCompletionOption.ResponseHeadersRead, userState: null, cancellationToken))
+            {
+                if (!response.IsSuccessStatusCode)
+                {
+                    throw new Exception($"Failed to create append file, status code: {response.StatusCode}, reason: {response.ReasonPhrase}");
+                }
+                return response;
+            }
+        }
+
+        private async Task<HttpResponseMessage> UploadAppendFileAsync(string url, string blobStorageType, FileStream file, bool finalize, long fileSize, CancellationToken cancellationToken)
+        {
+            var comp = finalize ? "&comp=appendblock&seal=true" : "&comp=appendblock";
+            // Upload the file to the url
+            var request = new HttpRequestMessage(HttpMethod.Put, url + comp)
+            {
+                Content = new StreamContent(file)
+            };
+
+            if (blobStorageType == BlobStorageTypes.AzureBlobStorage)
+            {
+                request.Content.Headers.Add("Content-Length", fileSize.ToString());
+                request.Content.Headers.Add(Constants.AzureBlobSealedHeader, finalize.ToString());
+            }
+
+            using (var response = await SendAsync(request, HttpCompletionOption.ResponseHeadersRead, userState: null, cancellationToken))
+            {
+                if (!response.IsSuccessStatusCode)
+                {
+                    throw new Exception($"Failed to upload append file, status code: {response.StatusCode}, reason: {response.ReasonPhrase}, object: {response}, fileSize: {fileSize}");
+                }
+                return response;
+            }
+        }
+
         // Handle file upload for step summary
-        public async Task UploadStepSummaryAsync(string planId, string jobId, string stepId, string file, CancellationToken cancellationToken)
+        public async Task UploadStepSummaryAsync(string planId, string jobId, Guid stepId, string file, CancellationToken cancellationToken)
         {
             // Get the upload url
             var uploadUrlResponse = await GetStepSummaryUploadUrlAsync(planId, jobId, stepId, cancellationToken);
+            if (uploadUrlResponse == null)
+            {
+                throw new Exception("Failed to get step summary upload url");
+            }
 
             // Do we want to throw an exception here or should we just be uploading/truncating the data
             var fileSize = new FileInfo(file).Length;
@@ -124,15 +251,147 @@ namespace GitHub.Services.Results.Client
             // Upload the file
             using (var fileStream = new FileStream(file, FileMode.Open, FileAccess.Read, FileShare.Read, 4096, true))
             {
-                var response = await UploadFileAsync(uploadUrlResponse.SummaryUrl, uploadUrlResponse.BlobStorageType, fileStream, cancellationToken);
+                var response = await UploadBlockFileAsync(uploadUrlResponse.SummaryUrl, uploadUrlResponse.BlobStorageType, fileStream, cancellationToken);
             }
 
             // Send step summary upload complete message
             await StepSummaryUploadCompleteAsync(planId, jobId, stepId, fileSize, cancellationToken);
         }
 
+        // Handle file upload for step log
+        public async Task UploadResultsStepLogAsync(string planId, string jobId, Guid stepId, string file, bool finalize, bool firstBlock, long lineCount, CancellationToken cancellationToken)
+        {
+            // Get the upload url
+            var uploadUrlResponse = await GetStepLogUploadUrlAsync(planId, jobId, stepId, cancellationToken);
+            if (uploadUrlResponse == null || uploadUrlResponse.LogsUrl == null)
+            {
+                throw new Exception("Failed to get step log upload url");
+            }
+
+            // Create the Append blob
+            if (firstBlock)
+            {
+                await CreateAppendFileAsync(uploadUrlResponse.LogsUrl, uploadUrlResponse.BlobStorageType, cancellationToken);
+            }
+
+            // Upload content
+            var fileSize = new FileInfo(file).Length;
+            using (var fileStream = new FileStream(file, FileMode.Open, FileAccess.Read, FileShare.Read, 4096, true))
+            {
+                var response = await UploadAppendFileAsync(uploadUrlResponse.LogsUrl, uploadUrlResponse.BlobStorageType, fileStream, finalize, fileSize, cancellationToken);
+            }
+
+            // Update metadata
+            if (finalize)
+            {
+                // Send step log upload complete message
+                await StepLogUploadCompleteAsync(planId, jobId, stepId, lineCount, cancellationToken);
+            }
+        }
+
+        // Handle file upload for job log
+        public async Task UploadResultsJobLogAsync(string planId, string jobId, string file, bool finalize, bool firstBlock, long lineCount, CancellationToken cancellationToken)
+        {
+            // Get the upload url
+            var uploadUrlResponse = await GetJobLogUploadUrlAsync(planId, jobId, cancellationToken);
+            if (uploadUrlResponse == null || uploadUrlResponse.LogsUrl == null)
+            {
+                throw new Exception("Failed to get job log upload url");
+            }
+
+            // Create the Append blob
+            if (firstBlock)
+            {
+                await CreateAppendFileAsync(uploadUrlResponse.LogsUrl, uploadUrlResponse.BlobStorageType, cancellationToken);
+            }
+
+            // Upload content
+            var fileSize = new FileInfo(file).Length;
+            using (var fileStream = new FileStream(file, FileMode.Open, FileAccess.Read, FileShare.Read, 4096, true))
+            {
+                var response = await UploadAppendFileAsync(uploadUrlResponse.LogsUrl, uploadUrlResponse.BlobStorageType, fileStream, finalize, fileSize, cancellationToken);
+            }
+
+            // Update metadata
+            if (finalize)
+            {
+                // Send step log upload complete message
+                await JobLogUploadCompleteAsync(planId, jobId, lineCount, cancellationToken);
+            }
+        }
+
+        private Step ConvertTimelineRecordToStep(TimelineRecord r)
+        {
+            return new Step()
+            {
+                ExternalId = r.Id.ToString(),
+                Number = r.Order.GetValueOrDefault(),
+                Name = r.Name,
+                Status = ConvertStateToStatus(r.State.GetValueOrDefault()),
+                StartedAt = r.StartTime?.ToString(Constants.TimestampFormat),
+                CompletedAt = r.FinishTime?.ToString(Constants.TimestampFormat)
+            };
+        }
+
+        private Status ConvertStateToStatus(TimelineRecordState s)
+        {
+            switch (s)
+            {
+                case TimelineRecordState.Completed:
+                    return Status.StatusCompleted;
+                case TimelineRecordState.Pending:
+                    return Status.StatusPending;
+                case TimelineRecordState.InProgress:
+                    return Status.StatusInProgress;
+                default:
+                    return Status.StatusUnknown;
+            }
+        }
+
+        public async Task UpdateWorkflowStepsAsync(Guid planId, IEnumerable<TimelineRecord> records, CancellationToken cancellationToken)
+        {
+            var timestamp = DateTime.UtcNow.ToString(Constants.TimestampFormat);
+            var stepRecords = records.Where(r => String.Equals(r.RecordType, "Task", StringComparison.Ordinal));
+            var stepUpdateRequests = stepRecords.GroupBy(r => r.ParentId).Select(sg => new StepsUpdateRequest()
+            {
+                WorkflowRunBackendId = planId.ToString(),
+                WorkflowJobRunBackendId = sg.Key.ToString(),
+                ChangeOrder = m_changeIdCounter++,
+                Steps = sg.Select(ConvertTimelineRecordToStep)
+            });
+
+            var stepUpdateEndpoint = new Uri(m_resultsServiceUrl, Constants.WorkflowStepsUpdate);
+            foreach (var request in stepUpdateRequests)
+            {
+                await SendRequest<StepsUpdateRequest>(stepUpdateEndpoint, cancellationToken, request, timestamp);
+            }
+        }
+
         private MediaTypeFormatter m_formatter;
         private Uri m_resultsServiceUrl;
         private string m_token;
+        private int m_changeIdCounter;
     }
+
+    // Constants specific to results
+    public static class Constants
+    {
+        public static readonly string TimestampFormat = "yyyy-MM-dd'T'HH:mm:ss.fffK";
+
+        public static readonly string ResultsReceiverTwirpEndpoint = "twirp/results.services.receiver.Receiver/";
+        public static readonly string GetStepSummarySignedBlobURL = ResultsReceiverTwirpEndpoint + "GetStepSummarySignedBlobURL";
+        public static readonly string CreateStepSummaryMetadata = ResultsReceiverTwirpEndpoint + "CreateStepSummaryMetadata";
+        public static readonly string GetStepLogsSignedBlobURL = ResultsReceiverTwirpEndpoint + "GetStepLogsSignedBlobURL";
+        public static readonly string CreateStepLogsMetadata = ResultsReceiverTwirpEndpoint + "CreateStepLogsMetadata";
+        public static readonly string GetJobLogsSignedBlobURL = ResultsReceiverTwirpEndpoint + "GetJobLogsSignedBlobURL";
+        public static readonly string CreateJobLogsMetadata = ResultsReceiverTwirpEndpoint + "CreateJobLogsMetadata";
+        public static readonly string ResultsProtoApiV1Endpoint = "twirp/github.actions.results.api.v1.WorkflowStepUpdateService/";
+        public static readonly string WorkflowStepsUpdate = ResultsProtoApiV1Endpoint + "WorkflowStepsUpdate";
+
+        public static readonly string AzureBlobSealedHeader = "x-ms-blob-sealed";
+        public static readonly string AzureBlobTypeHeader = "x-ms-blob-type";
+        public static readonly string AzureBlockBlob = "BlockBlob";
+        public static readonly string AzureAppendBlob = "AppendBlob";
+    }
+
 }

src/Test/L0/HostContextL0.cs

@@ -1,4 +1,3 @@
-using GitHub.Runner.Common.Util;
 using System;
 using System.IO;
 using System.Reflection;
@@ -13,6 +12,7 @@ namespace GitHub.Runner.Common.Tests
     {
         private HostContext _hc;
         private CancellationTokenSource _tokenSource;
+        private const string EXPECTED_SECRET_MASK = "***";
 
         [Fact]
         [Trait("Level", "L0")]
@@ -95,11 +95,11 @@ namespace GitHub.Runner.Common.Tests
                 Assert.Equal("123***123", _hc.SecretMasker.MaskSecrets("123Pass%20word%20123%21123"));
                 Assert.Equal("123***123", _hc.SecretMasker.MaskSecrets("123Pass<word>123!123"));
                 Assert.Equal("123***123", _hc.SecretMasker.MaskSecrets("123Pass''word''123!123"));
-                Assert.Equal("OlBh***", _hc.SecretMasker.MaskSecrets(Convert.ToBase64String(Encoding.UTF8.GetBytes($":Password123!"))));
-                Assert.Equal("YTpQ***", _hc.SecretMasker.MaskSecrets(Convert.ToBase64String(Encoding.UTF8.GetBytes($"a:Password123!"))));
+                Assert.Equal("OlBh***==", _hc.SecretMasker.MaskSecrets(Convert.ToBase64String(Encoding.UTF8.GetBytes($":Password123!"))));
+                Assert.Equal("YTpQ***=", _hc.SecretMasker.MaskSecrets(Convert.ToBase64String(Encoding.UTF8.GetBytes($"a:Password123!"))));
                 Assert.Equal("YWI6***", _hc.SecretMasker.MaskSecrets(Convert.ToBase64String(Encoding.UTF8.GetBytes($"ab:Password123!"))));
-                Assert.Equal("YWJjOlBh***", _hc.SecretMasker.MaskSecrets(Convert.ToBase64String(Encoding.UTF8.GetBytes($"abc:Password123!"))));
-                Assert.Equal("YWJjZDpQ***", _hc.SecretMasker.MaskSecrets(Convert.ToBase64String(Encoding.UTF8.GetBytes($"abcd:Password123!"))));
+                Assert.Equal("YWJjOlBh***==", _hc.SecretMasker.MaskSecrets(Convert.ToBase64String(Encoding.UTF8.GetBytes($"abc:Password123!"))));
+                Assert.Equal("YWJjZDpQ***=", _hc.SecretMasker.MaskSecrets(Convert.ToBase64String(Encoding.UTF8.GetBytes($"abcd:Password123!"))));
                 Assert.Equal("YWJjZGU6***", _hc.SecretMasker.MaskSecrets(Convert.ToBase64String(Encoding.UTF8.GetBytes($"abcde:Password123!"))));
                 Assert.Equal("123***123", _hc.SecretMasker.MaskSecrets("123Password123!!123"));
                 Assert.Equal("123short123", _hc.SecretMasker.MaskSecrets("123short123"));
@@ -112,6 +112,116 @@ namespace GitHub.Runner.Common.Tests
             }
         }
 
+        [Fact]
+        [Trait("Level", "L0")]
+        [Trait("Category", "Common")]
+        public void Base64SecretMaskers()
+        {
+
+            // The following are good candidate strings for Base64 encoding because they include
+            // both standard and RFC 4648 Base64 digits in all offset variations.
+            //   TeLL? noboDy~ SEcreT?
+            //   tElL~ NEVER~ neveR?
+            //   TIGht? Tight~ guard~
+            //   pRIVAte~ guARd? TIghT~
+            //   KeeP~ TIgHT? tIgHT~
+            //   LoCk? TiGhT~ TIght~
+            //   DIvULGe~ nObODY~ noBOdy?
+            //   foreVER~ Tight~ GUaRd?
+
+            try
+            {
+                // Arrange.
+                Setup();
+
+                // Act.
+                _hc.SecretMasker.AddValue("TeLL? noboDy~ SEcreT?");
+
+                // The above string has the following Base64 variations based on the chop leading byte(s) method of Base64 aliasing:
+                var base64Variations = new[]
+                {
+                    "VGVMTD8gbm9ib0R5fiBTRWNyZVQ/",
+                    "ZUxMPyBub2JvRHl+IFNFY3JlVD8",
+                    "TEw/IG5vYm9EeX4gU0VjcmVUPw",
+
+                    // RFC 4648 (URL-safe Base64)
+                    "VGVMTD8gbm9ib0R5fiBTRWNyZVQ_",
+                    "ZUxMPyBub2JvRHl-IFNFY3JlVD8",
+                    "TEw_IG5vYm9EeX4gU0VjcmVUPw"
+                };
+
+                var bookends = new[]
+                {
+                    (string.Empty, string.Empty),
+                    (string.Empty, "="),
+                    (string.Empty, "=="),
+                    (string.Empty, "==="),
+                    ("a", "z"),
+                    ("A", "Z"),
+                    ("abc", "abc"),
+                    ("ABC", "ABC"),
+                    ("0", "0"),
+                    ("00", "00"),
+                    ("000", "000"),
+                    ("123", "789"),
+                    ("`", "`"),
+                    ("'", "'"),
+                    ("\"", "\""),
+                    ("[", "]"),
+                    ("(", ")"),
+                    ("$(", ")"),
+                    ("{", "}"),
+                    ("${", "}"),
+                    ("!", "!"),
+                    ("!!", "!!"),
+                    ("%", "%"),
+                    ("%%", "%%"),
+                    ("_", "_"),
+                    ("__", "__"),
+                    (":", ":"),
+                    ("::", "::"),
+                    (";", ";"),
+                    (";;", ";;"),
+                    (":", string.Empty),
+                    (";", string.Empty),
+                    (string.Empty, ":"),
+                    (string.Empty, ";"),
+                    ("VGVMTD8gbm9ib", "ZUxMPy"),
+                    ("VGVMTD8gbm9ib", "TEw/IG5vYm9EeX4"),
+                    ("ZUxMPy", "TEw/IG5vYm9EeX4"),
+                    ("VGVMTD8gbm9ib", string.Empty),
+                    ("TEw/IG5vYm9EeX4", string.Empty),
+                    ("ZUxMPy", string.Empty),
+                    (string.Empty, "VGVMTD8gbm9ib"),
+                    (string.Empty, "TEw/IG5vYm9EeX4"),
+                    (string.Empty, "ZUxMPy"),
+                };
+
+                foreach (var variation in base64Variations)
+                {
+                    foreach (var pair in bookends)
+                    {
+                        var (prefix, suffix) = pair;
+                        var expected = string.Format("{0}{1}{2}", prefix, EXPECTED_SECRET_MASK, suffix);
+                        var payload = string.Format("{0}{1}{2}", prefix, variation, suffix);
+                        Assert.Equal(expected, _hc.SecretMasker.MaskSecrets(payload));
+                    }
+
+                    // Verify no masking is performed on a partial match.
+                    for (int i = 1; i < variation.Length - 1; i++)
+                    {
+                        var fragment = variation[..i];
+                        Assert.Equal(fragment, _hc.SecretMasker.MaskSecrets(fragment));
+                    }
+                }
+            }
+            finally
+            {
+                // Cleanup.
+                Teardown();
+            }
+        }
+
         [Theory]
         [InlineData("secret&secret&secret", "secret&secret&\x0033[96msecret\x0033[0m", "***\x0033[96m***\x0033[0m")]
         [InlineData("secret&secret+secret", "secret&\x0033[96msecret+secret\x0033[0m", "***\x0033[96m***\x0033[0m")]