release 2.285.1

* Add telemetry around runner update process.

* .

* .

* .

.editorconfig

@@ -0,0 +1,8 @@
+# https://editorconfig.org/
+
+[*]
+insert_final_newline = true # ensure all files end with a single newline
+trim_trailing_whitespace = true # attempt to remove trailing whitespace on save
+
+[*.md]
+trim_trailing_whitespace = false # in markdown, "two trailing spaces" is unfortunately meaningful; it means `<br>`

.github/ISSUE_TEMPLATE.md

@@ -1,10 +0,0 @@
-## Runner Version and Platform
-Version of your runner?
-
-OS of the machine running the runner? OSX/Windows/Linux/...
-
-## What's not working?
-Please include error messages and screenshots.
-
-## Runner and Worker's Diagnostic Logs
-Logs are located in the runner's `_diag` folder. The runner logs are prefixed with `Runner_` and the worker logs are prefixed with `Worker_`. All sensitive information should already be masked out, but please double-check before pasting here.

.github/ISSUE_TEMPLATE/bug_report.md

@@ -0,0 +1,34 @@
+---
+name: Bug report
+about: Create a report to help us improve
+title: ''
+labels: bug
+assignees: ''
+
+---
+
+**Describe the bug**
+A clear and concise description of what the bug is.
+
+**To Reproduce**
+Steps to reproduce the behavior:
+1. Go to '...'
+2. Run '....'
+3. See error
+
+**Expected behavior**
+A clear and concise description of what you expected to happen.
+
+## Runner Version and Platform
+Version of your runner?
+
+OS of the machine running the runner? OSX/Windows/Linux/...
+
+## What's not working?
+Please include error messages and screenshots.
+
+## Job Log Output
+If applicable, include the relevant part of the job / step log output here.  All sensitive information should already be masked out, but please double-check before pasting here.
+
+## Runner and Worker's Diagnostic Logs
+If applicable, add relevant diagnostic log information.  Logs are located in the runner's `_diag` folder. The runner logs are prefixed with `Runner_` and the worker logs are prefixed with `Worker_`. Each job run correlates to a worker log.  All sensitive information should already be masked out, but please double-check before pasting here.

.github/ISSUE_TEMPLATE/enhancement_request.md

@@ -0,0 +1,27 @@
+---
+name: Feature Request
+about: Create a request to help us improve
+title: ''
+labels: enhancement
+assignees: ''
+
+---
+
+Thank you 🙇‍♀ for wanting to create a feature in this repository. Before you do, please ensure you are filing the issue in the right place. Issues should only be opened on if the issue **relates to code in this repository**.  
+
+* 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 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/build.yml

@@ -1,13 +1,18 @@
 name: Runner CI
 
 on:
+  workflow_dispatch:
   push:
     branches:
-    - master
+    - main
     - releases/*
+    paths-ignore:
+    - '**.md'
   pull_request:
     branches:
     - '*'
+    paths-ignore:
+    - '**.md'
 
 jobs:
   build:

.github/workflows/codeql.yml

@@ -0,0 +1,36 @@
+name: "Code Scanning - Action"
+
+on:
+  push:
+  pull_request:
+  schedule:
+    - cron: '0 0 * * 0'
+
+jobs:
+  CodeQL-Build:
+
+    strategy:
+      fail-fast: false
+
+
+    # CodeQL runs on ubuntu-latest, windows-latest, and macos-latest
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Checkout repository
+      uses: actions/checkout@v2
+
+    # Initializes the CodeQL tools for scanning.
+    - name: Initialize CodeQL
+      uses: github/codeql-action/init@v1
+      # Override language selection by uncommenting this and choosing your languages
+      # with:
+      #   languages: go, javascript, csharp, python, cpp, java
+
+    - name: Manual build
+      run : |
+        ./dev.sh layout Release linux-x64
+      working-directory: src
+
+    - name: Perform CodeQL Analysis
+      uses: github/codeql-action/analyze@v1

.github/workflows/release.yml

@@ -1,12 +1,56 @@
 name: Runner CD
 
 on:
+  workflow_dispatch:
   push:
     paths:
-    - src/runnerversion_block # Change this to src/runnerversion when we are ready.
+    - releaseVersion
 
 jobs:
+  check:
+    if: startsWith(github.ref, 'refs/heads/releases/') || github.ref == 'refs/heads/main'
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v2
+
+    # Make sure ./releaseVersion match ./src/runnerversion
+    # Query GitHub release ensure version is not used
+    - name: Check version
+      uses: actions/github-script@0.3.0
+      with:
+        github-token: ${{secrets.GITHUB_TOKEN}}
+        script: |
+          const core = require('@actions/core')
+          const fs = require('fs');
+          const runnerVersion = fs.readFileSync('${{ github.workspace }}/src/runnerversion', 'utf8').replace(/\n$/g, '')
+          const releaseVersion = fs.readFileSync('${{ github.workspace }}/releaseVersion', 'utf8').replace(/\n$/g, '')
+          if (runnerVersion != releaseVersion) {
+            console.log('Request Release Version: ' + releaseVersion + '\nCurrent Runner Version: ' + runnerVersion)
+            core.setFailed('Version mismatch! Make sure ./releaseVersion match ./src/runnerVersion')
+            return
+          }
+          try {
+            const release = await github.repos.getReleaseByTag({
+              owner: '${{ github.event.repository.owner.name }}',
+              repo: '${{ github.event.repository.name }}',
+              tag: 'v' + runnerVersion
+            })
+            core.setFailed('Release with same tag already created: ' + release.data.html_url)
+          } catch (e) {
+            // We are good to create the release if release with same tag doesn't exists
+            if (e.status != 404) {
+              throw e
+            }
+          }
+
   build:
+    needs: check
+    outputs:
+      linux-x64-sha: ${{ steps.sha.outputs.linux-x64-sha256 }}
+      linux-arm64-sha: ${{ steps.sha.outputs.linux-arm64-sha256 }}
+      linux-arm-sha: ${{ steps.sha.outputs.linux-arm-sha256 }}
+      win-x64-sha: ${{ steps.sha.outputs.win-x64-sha256 }}
+      osx-x64-sha: ${{ steps.sha.outputs.osx-x64-sha256 }}
     strategy:
       matrix:
         runtime: [ linux-x64, linux-arm64, linux-arm, win-x64, osx-x64 ]
@@ -52,7 +96,7 @@ jobs:
     - name: Package Release
       if: github.event_name != 'pull_request'
       run: |
-        ${{ matrix.devScript }} package Release
+        ${{ matrix.devScript }} package Release ${{ matrix.runtime }}
       working-directory: src
 
     # Upload runner package tar.gz/zip as artifact.
@@ -63,17 +107,32 @@ jobs:
       with:
         name: runner-packages
         path: _package
-
+    # compute shas and set as job outputs to use in release notes
+    - run: brew install coreutils #needed for shasum util
+      if: ${{ matrix.os == 'macOS-latest' }}
+      name: Install Dependencies for SHA Calculation (osx)
+    - run: |
+        file=$(ls)
+        sha=$(sha256sum $file | awk '{ print $1 }')
+        echo "Computed sha256: $sha for $file"
+        echo "::set-output name=${{matrix.runtime}}-sha256::$sha"
+      shell: bash
+      id: sha
+      name: Compute SHA256
+      working-directory: _package
   release:
     needs: build
-    runs-on: linux-latest
+    runs-on: ubuntu-latest
     steps:
 
+    - uses: actions/checkout@v2
+
     # Download runner package tar.gz/zip produced by 'build' job
     - name: Download Artifact
       uses: actions/download-artifact@v1
       with:
         name: runner-packages
+        path: ./
 
     # Create ReleaseNote file
     - name: Create ReleaseNote
@@ -82,103 +141,77 @@ jobs:
       with:
         github-token: ${{secrets.GITHUB_TOKEN}}
         script: |
+          const core = require('@actions/core')
           const fs = require('fs');
-          // Get runner version from ./src/runnerVersion file
-          const versionContent = await github.repos.getContents({
-            owner: '${{ github.event.repository.owner.name }}',
-            repo: '${{ github.event.repository.name }}',
-            path: 'src/runnerversion'
-            ref: ${{ github.sha }}
-          })
-          const runnerVersion = Buffer.from(versionContent.data.content, 'base64').toString()
-          console.log("Runner Version ' + runnerVersion)
-          core.setOutput('version', runnerVersion);
-
-          // Query GitHub release ensure version is bumped 
-          const latestRelease = await github.repos.getLatestRelease({
-            owner: '${{ github.event.repository.owner.name }}',
-            repo: '${{ github.event.repository.name }}'
-          })
-          console.log(latestRelease.name)
-          const latestReleaseVersion = latestRelease.name.substring(1)
-          const vLatest = latestReleaseVersion.split('.')
-          const vNew = runnerVersion.split('.')
-          let versionBumped = true
-          for (let i = 0; i < 3; ++i) {
-            var v1 = parseInt(vLatest[i], 10);
-            var v2 = parseInt(vNew[i], 10);
-            if (v2 > v1) {
-              console.log(runnerVersion + " > " + latestReleaseVersion + "(Latest)")
-              break
-            }
-            
-            if (v1 > v2) {
-              versionBumped = false  
-              core.setFailed(runnerVersion + " < " + latestReleaseVersion + "(Latest)")
-              break
-            }
-          }
-
-          // Generate release note
-          if (versionBumped) {
-            const releaseNoteContent = await github.repos.getContents({
-              owner: '${{ github.event.repository.owner.name }}',
-              repo: '${{ github.event.repository.name }}',
-              path: 'releaseNote.md'
-              ref: ${{ github.sha }}
-            })
-            const releaseNote = Buffer.from(releaseNoteContent.data.content, 'base64').toString().replace("<RUNNER_VERSION>", runnerVersion)
+          const runnerVersion = fs.readFileSync('${{ github.workspace }}/src/runnerversion', 'utf8').replace(/\n$/g, '')
+          var releaseNote = fs.readFileSync('${{ github.workspace }}/releaseNote.md', 'utf8').replace(/<RUNNER_VERSION>/g, runnerVersion)
+          releaseNote = releaseNote.replace(/<WIN_X64_SHA>/g, '${{needs.build.outputs.win-x64-sha}}')
+          releaseNote = releaseNote.replace(/<OSX_X64_SHA>/g, '${{needs.build.outputs.osx-x64-sha}}')
+          releaseNote = releaseNote.replace(/<LINUX_X64_SHA>/g, '${{needs.build.outputs.linux-x64-sha}}')
+          releaseNote = releaseNote.replace(/<LINUX_ARM_SHA>/g, '${{needs.build.outputs.linux-arm-sha}}')
+          releaseNote = releaseNote.replace(/<LINUX_ARM64_SHA>/g, '${{needs.build.outputs.linux-arm64-sha}}')
           console.log(releaseNote)
+          core.setOutput('version', runnerVersion);
           core.setOutput('note', releaseNote);
-          }
-
     # Create GitHub release
-    - uses: actions/create-release@v1
+    - uses: actions/create-release@master
       id: createRelease
       name: Create ${{ steps.releaseNote.outputs.version }} Runner Release
+      env:
+        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
       with:
         tag_name: "v${{ steps.releaseNote.outputs.version }}"
         release_name: "v${{ steps.releaseNote.outputs.version }}"
-        body: ${{ steps.releaseNote.outputs.note }}
-        prerelease: true
+        body: |
+          ${{ steps.releaseNote.outputs.note }}
 
     # Upload release assets
     - name: Upload Release Asset (win-x64)
       uses: actions/upload-release-asset@v1.0.1
+      env:
+        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
       with:
         upload_url: ${{ steps.createRelease.outputs.upload_url }}
-        asset_path: ./actions-runner-win-x64-${{ steps.releaseNote.outputs.version }}.zip
+        asset_path: ${{ github.workspace }}/actions-runner-win-x64-${{ steps.releaseNote.outputs.version }}.zip
         asset_name: actions-runner-win-x64-${{ steps.releaseNote.outputs.version }}.zip
         asset_content_type: application/octet-stream
 
     - name: Upload Release Asset (linux-x64)
       uses: actions/upload-release-asset@v1.0.1
+      env:
+        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
       with:
         upload_url: ${{ steps.createRelease.outputs.upload_url }}
-        asset_path: ./actions-runner-linux-x64-${{ steps.releaseNote.outputs.version }}.zip
-        asset_name: actions-runner-linux-x64-${{ steps.releaseNote.outputs.version }}.zip
+        asset_path: ${{ github.workspace }}/actions-runner-linux-x64-${{ steps.releaseNote.outputs.version }}.tar.gz
+        asset_name: actions-runner-linux-x64-${{ steps.releaseNote.outputs.version }}.tar.gz
         asset_content_type: application/octet-stream
 
-    - name: Upload Release Asset (mac-x64)
+    - name: Upload Release Asset (osx-x64)
       uses: actions/upload-release-asset@v1.0.1
+      env:
+        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
       with:
         upload_url: ${{ steps.createRelease.outputs.upload_url }}
-        asset_path: ./actions-runner-mac-x64-${{ steps.releaseNote.outputs.version }}.zip
-        asset_name: actions-runner-mac-x64-${{ steps.releaseNote.outputs.version }}.zip
+        asset_path: ${{ github.workspace }}/actions-runner-osx-x64-${{ steps.releaseNote.outputs.version }}.tar.gz
+        asset_name: actions-runner-osx-x64-${{ steps.releaseNote.outputs.version }}.tar.gz
         asset_content_type: application/octet-stream
 
     - name: Upload Release Asset (linux-arm)
       uses: actions/upload-release-asset@v1.0.1
+      env:
+        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
       with:
         upload_url: ${{ steps.createRelease.outputs.upload_url }}
-        asset_path: ./actions-runner-linux-arm-${{ steps.releaseNote.outputs.version }}.zip
-        asset_name: actions-runner-linux-arm-${{ steps.releaseNote.outputs.version }}.zip
+        asset_path: ${{ github.workspace }}/actions-runner-linux-arm-${{ steps.releaseNote.outputs.version }}.tar.gz
+        asset_name: actions-runner-linux-arm-${{ steps.releaseNote.outputs.version }}.tar.gz
         asset_content_type: application/octet-stream
 
     - name: Upload Release Asset (linux-arm64)
       uses: actions/upload-release-asset@v1.0.1
+      env:
+        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
       with:
         upload_url: ${{ steps.createRelease.outputs.upload_url }}
-        asset_path: ./actions-runner-linux-arm64-${{ steps.releaseNote.outputs.version }}.zip
-        asset_name: actions-runner-linux-arm64-${{ steps.releaseNote.outputs.version }}.zip
+        asset_path: ${{ github.workspace }}/actions-runner-linux-arm64-${{ steps.releaseNote.outputs.version }}.tar.gz
+        asset_name: actions-runner-linux-arm64-${{ steps.releaseNote.outputs.version }}.tar.gz
         asset_content_type: application/octet-stream

.gitignore

@@ -1,12 +1,21 @@
+# build output
 **/bin
 **/obj
 **/libs
+**/lib
+
+# editors
 **/*.xproj
 **/*.xproj.user
 **/.vs
-**/.vscode
 **/*.error
 **/*.json.pretty
+.idea/
+.vscode
+!.vscode/launch.json
+!.vscode/tasks.json
+
+# output
 node_modules
 _downloads
 _layout
@@ -16,7 +25,3 @@ TestResults
 TestLogs
 .DS_Store
 **/*.DotSettings.user
-
-#generated
-src/Runner.Sdk/BuildConstants.cs
-

.vscode/launch.json

@@ -0,0 +1,57 @@
+{
+    "version": "0.2.0",
+    "configurations": [
+        {
+            "name": "Run [build]",
+            "type": "coreclr",
+            "request": "launch",
+            "preLaunchTask": "build runner layout",
+            "program": "${workspaceFolder}/_layout/bin/Runner.Listener",
+            "args": [
+                "run"
+            ],
+            "cwd": "${workspaceFolder}/src",
+            "console": "integratedTerminal",
+            "requireExactSource": false,
+        },
+        {
+            "name": "Run",
+            "type": "coreclr",
+            "request": "launch",
+            "program": "${workspaceFolder}/_layout/bin/Runner.Listener",
+            "args": [
+                "run"
+            ],
+            "cwd": "${workspaceFolder}/src",
+            "console": "integratedTerminal",
+            "requireExactSource": false,
+        },
+        {
+            "name": "Configure",
+            "type": "coreclr",
+            "request": "launch",
+            "preLaunchTask": "create runner layout",
+            "program": "${workspaceFolder}/_layout/bin/Runner.Listener",
+            "args": [
+                "configure"
+            ],
+            "cwd": "${workspaceFolder}/src",
+            "console": "integratedTerminal",
+            "requireExactSource": false,
+        },
+        {
+            "name": "Debug Worker",
+            "type": "coreclr",
+            "request": "attach",
+            "processName": "Runner.Worker",
+            "requireExactSource": false,
+        },
+        {
+            "name": "Attach Debugger",
+            "type": "coreclr",
+            "request": "attach",
+            "processId": "${command:pickProcess}",
+            "requireExactSource": false,
+        },
+    ],
+}

.vscode/tasks.json

@@ -0,0 +1,33 @@
+{
+    "version": "2.0.0",
+    "tasks": [
+        {
+            "label": "create runner layout",
+            "detail": "Build and Copy all projects, scripts and external dependencies to _layout from src (run this the first time or after deleting _layout)",
+            "command": "./dev.sh",
+            "windows": {
+                "command": "dev.cmd"
+            },
+            "args": [
+                "layout"
+            ],
+            "options": {
+                "cwd": "${workspaceFolder}/src"
+            },
+        },
+        {
+            "label": "build runner layout",
+            "detail": "Build and Copy all projects to _layout from src (run this on code change)",
+            "command": "./dev.sh",
+            "windows": {
+                "command": "dev.cmd"
+            },
+            "args": [
+                "build"
+            ],
+            "options": {
+                "cwd": "${workspaceFolder}/src"
+            },
+        }
+    ],
+}

CODEOWNERS

@@ -0,0 +1 @@
+* @actions/actions-runtime

LICENSE

@@ -1,5 +1,5 @@
 The MIT License (MIT)
-Copyright (c) Microsoft Corporation
+Copyright (c) 2019 GitHub
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal

README.md

@@ -1,31 +1,26 @@
-# GitHub Actions Runner
-
 <p align="center">
   <img src="docs/res/github-graph.png">
 </p>
 
+# GitHub Actions Runner
+
 [![Actions Status](https://github.com/actions/runner/workflows/Runner%20CI/badge.svg)](https://github.com/actions/runner/actions)
+[![Runner E2E Test](https://github.com/actions-canary/actions-runner-e2e/actions/workflows/runner_e2etest.yml/badge.svg)](https://github.com/actions-canary/actions-runner-e2e/actions/workflows/runner_e2etest.yml)
+
+The runner is the application that runs a job from a GitHub Actions workflow. It is used by GitHub Actions in the [hosted virtual environments](https://github.com/actions/virtual-environments), or you can [self-host the runner](https://help.github.com/en/actions/automating-your-workflow-with-github-actions/about-self-hosted-runners) in your own environment.
 
 ## Get Started
 
-![win](docs/res/win_sm.png) [Pre-reqs](docs/start/envwin.md) | [Download](https://github.com/actions/runner/releases/latest)  
+For more information about installing and using self-hosted runners, see [Adding self-hosted runners](https://help.github.com/en/actions/automating-your-workflow-with-github-actions/adding-self-hosted-runners) and [Using self-hosted runners in a workflow](https://help.github.com/en/actions/automating-your-workflow-with-github-actions/using-self-hosted-runners-in-a-workflow)
 
-![macOS](docs/res/apple_sm.png)  [Pre-reqs](docs/start/envosx.md) | [Download](https://github.com/actions/runner/releases/latest)  
+Runner releases:
 
-![linux](docs/res/linux_sm.png)  [Pre-reqs](docs/start/envlinux.md) | [Download](https://github.com/actions/runner/releases/latest)
+![win](docs/res/win_sm.png) [Pre-reqs](docs/start/envwin.md) | [Download](https://github.com/actions/runner/releases)  
 
-**Configure:**
+![macOS](docs/res/apple_sm.png)  [Pre-reqs](docs/start/envosx.md) | [Download](https://github.com/actions/runner/releases)  
 
-*MacOS and Linux*
-```bash
-./config.sh
-```
-
-*Windows*
-```bash
-config.cmd
-```
+![linux](docs/res/linux_sm.png)  [Pre-reqs](docs/start/envlinux.md) | [Download](https://github.com/actions/runner/releases)
 
 ## Contribute
 
-For developers that want to contribute, [read here](docs/contribute.md) on how to build and test.
+We accept contributions in the form of issues and pull requests.  [Read more here](docs/contribute.md) before contributing.

assets.json

@@ -1,32 +0,0 @@
-[
-    {
-        "name": "actions-runner-win-x64-<RUNNER_VERSION>.zip",
-        "platform": "win-x64",
-        "version": "<RUNNER_VERSION>",
-        "downloadUrl": "https://githubassets.azureedge.net/runners/<RUNNER_VERSION>/actions-runner-win-x64-<RUNNER_VERSION>.zip"
-    },
-    {
-        "name": "actions-runner-osx-x64-<RUNNER_VERSION>.tar.gz",
-        "platform": "osx-x64",
-        "version": "<RUNNER_VERSION>",
-        "downloadUrl": "https://githubassets.azureedge.net/runners/<RUNNER_VERSION>/actions-runner-osx-x64-<RUNNER_VERSION>.tar.gz"
-    },
-    {
-        "name": "actions-runner-linux-x64-<RUNNER_VERSION>.tar.gz",
-        "platform": "linux-x64",
-        "version": "<RUNNER_VERSION>",
-        "downloadUrl": "https://githubassets.azureedge.net/runners/<RUNNER_VERSION>/actions-runner-linux-x64-<RUNNER_VERSION>.tar.gz"
-    },
-    {
-        "name": "actions-runner-linux-arm64-<RUNNER_VERSION>.tar.gz",
-        "platform": "linux-arm64",
-        "version": "<RUNNER_VERSION>",
-        "downloadUrl": "https://githubassets.azureedge.net/runners/<RUNNER_VERSION>/actions-runner-linux-arm64-<RUNNER_VERSION>.tar.gz"
-    },
-    {
-        "name": "actions-runner-linux-arm-<RUNNER_VERSION>.tar.gz",
-        "platform": "linux-arm",
-        "version": "<RUNNER_VERSION>",
-        "downloadUrl": "https://githubassets.azureedge.net/runners/<RUNNER_VERSION>/actions-runner-linux-arm-<RUNNER_VERSION>.tar.gz"
-    }
-]

azure-pipelines-release.yml

@@ -1,237 +0,0 @@
-stages:
-- stage: Build
-  jobs:
-  ################################################################################
-  - job: build_windows_agent_x64
-  ################################################################################
-    displayName: Windows Agent (x64)
-    pool:
-      vmImage: vs2017-win2016
-    steps:
-
-    # Steps template for windows platform
-    - template: windows.template.yml
-      parameters:
-        targetRuntime: win-x64
-
-    # Package dotnet core windows dependency (VC++ Redistributable)
-    - powershell: |
-        Write-Host "Downloading 'VC++ Redistributable' package."
-        $outDir = Join-Path -Path $env:TMP -ChildPath ([Guid]::NewGuid())
-        New-Item -Path $outDir -ItemType directory
-        $outFile = Join-Path -Path $outDir -ChildPath "ucrt.zip"
-        Invoke-WebRequest -Uri https://vstsagenttools.blob.core.windows.net/tools/ucrt/ucrt_x64.zip -OutFile $outFile
-        Write-Host "Unzipping 'VC++ Redistributable' package to agent layout."
-        $unzipDir = Join-Path -Path $outDir -ChildPath "unzip"
-        Add-Type -AssemblyName System.IO.Compression.FileSystem
-        [System.IO.Compression.ZipFile]::ExtractToDirectory($outFile, $unzipDir)
-        $agentLayoutBin = Join-Path -Path $(Build.SourcesDirectory) -ChildPath "_layout\bin"
-        Copy-Item -Path $unzipDir -Destination $agentLayoutBin -Force
-      displayName: Package UCRT
-
-    # Create agent package zip
-    - script: dev.cmd package Release win-x64
-      workingDirectory: src
-      displayName: Package Release
-
-    # Upload agent package zip as build artifact
-    - task: PublishBuildArtifacts@1
-      displayName: Publish Artifact (Windows x64)
-      inputs:
-        pathToPublish: _package
-        artifactName: runners
-        artifactType: container
-
-  ################################################################################
-  - job: build_linux_agent_x64
-  ################################################################################
-    displayName: Linux Agent (x64)
-    pool:
-      vmImage: ubuntu-16.04
-    steps:
-
-    # Steps template for non-windows platform
-    - template: nonwindows.template.yml
-      parameters:
-        targetRuntime: linux-x64
-
-    # Create agent package zip
-    - script: ./dev.sh package Release linux-x64
-      workingDirectory: src
-      displayName: Package Release
-
-    # Upload agent package zip as build artifact
-    - task: PublishBuildArtifacts@1
-      displayName: Publish Artifact (Linux x64)
-      inputs:
-        pathToPublish: _package
-        artifactName: runners
-        artifactType: container
-
-  ################################################################################
-  - job: build_linux_agent_arm64
-  ################################################################################
-    displayName: Linux Agent (arm64)
-    pool:
-      vmImage: ubuntu-16.04
-    steps:
-
-    # Steps template for non-windows platform
-    - template: nonwindows.template.yml
-      parameters:
-        targetRuntime: linux-arm64
-
-    # Create agent package zip
-    - script: ./dev.sh package Release linux-arm64
-      workingDirectory: src
-      displayName: Package Release
-
-    # Upload agent package zip as build artifact
-    - task: PublishBuildArtifacts@1
-      displayName: Publish Artifact (Linux ARM64)
-      inputs:
-        pathToPublish: _package
-        artifactName: runners
-        artifactType: container
-
-  ################################################################################
-  - job: build_linux_agent_arm
-  ################################################################################
-    displayName: Linux Agent (arm)
-    pool:
-      vmImage: ubuntu-16.04
-    steps:
-
-    # Steps template for non-windows platform
-    - template: nonwindows.template.yml
-      parameters:
-        targetRuntime: linux-arm
-
-    # Create agent package zip
-    - script: ./dev.sh package Release linux-arm
-      workingDirectory: src
-      displayName: Package Release
-
-    # Upload agent package zip as build artifact
-    - task: PublishBuildArtifacts@1
-      displayName: Publish Artifact (Linux ARM)
-      inputs:
-        pathToPublish: _package
-        artifactName: runners
-        artifactType: container
-
-  ################################################################################
-  - job: build_osx_agent_x64
-  ################################################################################
-    displayName: macOS Agent (x64)
-    pool:
-      vmImage: macOS-10.13
-    steps:
-
-    # Steps template for non-windows platform
-    - template: nonwindows.template.yml
-      parameters:
-        targetRuntime: osx-x64
-
-    # Create agent package zip
-    - script: ./dev.sh package Release osx-x64
-      workingDirectory: src
-      displayName: Package Release
-
-    # Upload agent package zip as build artifact
-    - task: PublishBuildArtifacts@1
-      displayName: Publish Artifact (OSX x64)
-      inputs:
-        pathToPublish: _package
-        artifactName: runners
-        artifactType: container
-
-- stage: Release
-  dependsOn: Build
-  jobs:
-  ################################################################################
-  - job: publish_agent_packages
-  ################################################################################
-    displayName: Publish Agents (Windows/Linux/OSX)
-    pool:
-      name: ProductionRMAgents
-    steps:
-
-    # Download all agent packages from all previous phases
-    - task: DownloadBuildArtifacts@0
-      displayName: Download Agent Packages
-      inputs:
-        artifactName: runners
-
-    # Upload agent packages to Azure blob storage and refresh Azure CDN
-    - powershell: |
-        Write-Host "Preloading Azure modules." # This is for better performance, to avoid module-autoloading.
-        Import-Module AzureRM, AzureRM.profile, AzureRM.Storage, Azure.Storage, AzureRM.Cdn -ErrorAction Ignore -PassThru
-        Enable-AzureRmAlias -Scope CurrentUser
-        $uploadFiles = New-Object System.Collections.ArrayList
-        $certificateThumbprint = (Get-ItemProperty -Path "$(ServicePrincipalReg)").ServicePrincipalCertThumbprint
-        $clientId = (Get-ItemProperty -Path "$(ServicePrincipalReg)").ServicePrincipalClientId
-        Write-Host "##vso[task.setsecret]$certificateThumbprint"
-        Write-Host "##vso[task.setsecret]$clientId"
-        Login-AzureRmAccount -ServicePrincipal -CertificateThumbprint $certificateThumbprint -ApplicationId $clientId -TenantId $(GitHubTenantId)
-        Select-AzureRmSubscription -SubscriptionId $(GitHubSubscriptionId)
-        $storage = Get-AzureRmStorageAccount -ResourceGroupName githubassets -AccountName githubassets
-        Get-ChildItem -LiteralPath "$(System.ArtifactsDirectory)/runners" | ForEach-Object {
-          $versionDir = $_.Name.Trim('.zip').Trim('.tar.gz')
-          $versionDir = $versionDir.SubString($versionDir.LastIndexOf('-') + 1)
-          Write-Host "##vso[task.setvariable variable=ReleaseAgentVersion;]$versionDir"
-          Write-Host "Uploading $_ to BlobStorage githubassets/runners/$versionDir"
-          Set-AzureStorageBlobContent -Context $storage.Context -Container runners -File "$(System.ArtifactsDirectory)/runners/$_" -Blob "$versionDir/$_" -Force
-          $uploadFiles.Add("/runners/$versionDir/$_")
-        }
-        Write-Host "Get CDN info"
-        Get-AzureRmCdnEndpoint -ProfileName githubassets -ResourceGroupName githubassets
-        Write-Host "Purge Azure CDN Cache"
-        Unpublish-AzureRmCdnEndpointContent -EndpointName githubassets -ProfileName githubassets -ResourceGroupName githubassets -PurgeContent $uploadFiles
-        Write-Host "Pull assets through Azure CDN"
-        $uploadFiles | ForEach-Object {
-          $downloadUrl = "https://githubassets.azureedge.net" + $_
-          Write-Host $downloadUrl
-          Invoke-WebRequest -Uri $downloadUrl -OutFile $_.SubString($_.LastIndexOf('/') + 1)
-        }
-      displayName: Upload to Azure Blob
-
-    # Create agent release on Github
-    - powershell: |
-        Write-Host "Creating github release."
-        $releaseNotes = [System.IO.File]::ReadAllText("$(Build.SourcesDirectory)\releaseNote.md").Replace("<RUNNER_VERSION>","$(ReleaseAgentVersion)")
-        $releaseData = @{
-          tag_name = "v$(ReleaseAgentVersion)";
-          target_commitish = "$(Build.SourceVersion)";
-          name = "v$(ReleaseAgentVersion)";
-          body = $releaseNotes;
-          draft = $false;
-          prerelease = $true;
-        }
-        $releaseParams = @{
-          Uri = "https://api.github.com/repos/actions/runner/releases";
-          Method = 'POST';
-          Headers = @{
-            Authorization = 'Basic ' + [Convert]::ToBase64String([Text.Encoding]::ASCII.GetBytes("github:$(GithubToken)"));
-          }
-          ContentType = 'application/json';
-          Body = (ConvertTo-Json $releaseData -Compress)
-        }
-        [Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12
-        $releaseCreated = Invoke-RestMethod @releaseParams
-        Write-Host $releaseCreated
-        $releaseId = $releaseCreated.id
-        Get-ChildItem -LiteralPath "$(System.ArtifactsDirectory)/runners" | ForEach-Object {
-          Write-Host "Uploading $_ as GitHub release assets"
-          $assetsParams = @{
-            Uri = "https://uploads.github.com/repos/actions/runner/releases/$releaseId/assets?name=$($_.Name)"
-            Method = 'POST';
-            Headers = @{
-              Authorization = 'Basic ' + [Convert]::ToBase64String([Text.Encoding]::ASCII.GetBytes("github:$(GithubToken)"));
-            }
-            ContentType = 'application/octet-stream';
-            Body = [System.IO.File]::ReadAllBytes($_.FullName)
-          }  
-          Invoke-RestMethod @assetsParams
-        }
-      displayName: Create agent release on Github

azure-pipelines.yml

@@ -1,95 +0,0 @@
-jobs:
-
-################################################################################
-- job: build_windows_x64_agent
-################################################################################
-  displayName: Windows Agent (x64)
-  pool:
-    vmImage: vs2017-win2016
-  steps:
-
-  # Steps template for windows platform
-  - template: windows.template.yml
-
-  # Package dotnet core windows dependency (VC++ Redistributable)
-  - powershell: |
-      Write-Host "Downloading 'VC++ Redistributable' package."
-      $outDir = Join-Path -Path $env:TMP -ChildPath ([Guid]::NewGuid())
-      New-Item -Path $outDir -ItemType directory 
-      $outFile = Join-Path -Path $outDir -ChildPath "ucrt.zip"
-      Invoke-WebRequest -Uri https://vstsagenttools.blob.core.windows.net/tools/ucrt/ucrt_x64.zip -OutFile $outFile
-      Write-Host "Unzipping 'VC++ Redistributable' package to agent layout."
-      $unzipDir = Join-Path -Path $outDir -ChildPath "unzip"
-      Add-Type -AssemblyName System.IO.Compression.FileSystem
-      [System.IO.Compression.ZipFile]::ExtractToDirectory($outFile, $unzipDir)
-      $agentLayoutBin = Join-Path -Path $(Build.SourcesDirectory) -ChildPath "_layout\bin"
-      Copy-Item -Path $unzipDir -Destination $agentLayoutBin -Force
-    displayName: Package UCRT
-    condition: and(succeeded(), ne(variables['build.reason'], 'PullRequest'))
-
-  # Create agent package zip
-  - script: dev.cmd package Release
-    workingDirectory: src
-    displayName: Package Release
-    condition: and(succeeded(), ne(variables['build.reason'], 'PullRequest'))
-
-  # Upload agent package zip as build artifact
-  - task: PublishBuildArtifacts@1
-    displayName: Publish Artifact (Windows x64)
-    condition: and(succeeded(), ne(variables['build.reason'], 'PullRequest'))
-    inputs:
-      pathToPublish: _package
-      artifactName: agent
-      artifactType: container
-
-################################################################################
-- job: build_linux_x64_agent
-################################################################################
-  displayName: Linux Agent (x64)
-  pool:
-    vmImage: ubuntu-16.04
-  steps:
-
-  # Steps template for non-windows platform
-  - template: nonwindows.template.yml
-
-  # Create agent package zip
-  - script: ./dev.sh package Release
-    workingDirectory: src
-    displayName: Package Release
-    condition: and(succeeded(), ne(variables['build.reason'], 'PullRequest'))
-
-  # Upload agent package zip as build artifact
-  - task: PublishBuildArtifacts@1
-    displayName: Publish Artifact (Linux x64)
-    condition: and(succeeded(), ne(variables['build.reason'], 'PullRequest'))
-    inputs:
-      pathToPublish: _package
-      artifactName: agent
-      artifactType: container
-
-################################################################################
-- job: build_osx_agent
-################################################################################
-  displayName: macOS Agent (x64)
-  pool:
-    vmImage: macOS-10.14
-  steps:
-
-  # Steps template for non-windows platform
-  - template: nonwindows.template.yml
-  
-  # Create agent package zip
-  - script: ./dev.sh package Release
-    workingDirectory: src
-    displayName: Package Release
-    condition: and(succeeded(), ne(variables['build.reason'], 'PullRequest'))
-
-  # Upload agent package zip as build artifact
-  - task: PublishBuildArtifacts@1
-    displayName: Publish Artifact (OSX)
-    condition: and(succeeded(), ne(variables['build.reason'], 'PullRequest'))
-    inputs:
-      pathToPublish: _package
-      artifactName: agent
-      artifactType: container

docs/adrs/0263-proxy-support.md

@@ -0,0 +1,61 @@
+# ADR 263: Self-Hosted Runner Proxies
+
+**Date**: 2019-11-13
+
+**Status**: Accepted
+
+## Context
+
+- Proxy support is required for some enterprises and organizations to start using their own self-hosted runners
+- While there is not a standard convention, many applications support setting proxies via the environment variables `http_proxy`, `https_proxy`, `no_proxy`, such as curl, wget, perl, python, docker, git, and R
+  - Some of these applications use `HTTPS_PROXY` versus `https_proxy`, but most understand or primarily support the lowercase variant
+
+## Decision
+
+We will update the Runner to use the conventional environment variables for proxies: `http_proxy`, `https_proxy`, and `no_proxy` if they are set.
+These are described in detail below:
+- `https_proxy` a proxy URL for all https traffic. It may contain basic authentication credentials. For example:
+  - http://proxy.com
+  - http://127.0.0.1:8080
+  - http://user:password@proxy.com
+- `http_proxy` a proxy URL for all http traffic. It may contain basic authentication credentials. For example:
+  - http://proxy.com
+  - http://127.0.0.1:8080
+  - http://user:password@proxy.com
+- `no_proxy` a comma-separated list of hosts that should not use the proxy. An optional port may be specified. For example:
+  - `google.com`
+  - `yahoo.com:443`
+  - `google.com,bing.com`
+
+We won't use `http_proxy` for https traffic when `https_proxy` is not set, this behavior lines up with any libcurl based tools (curl, git) and wget.
+Otherwise, action authors and workflow users need to adjust to differences between the runner proxy convention, and tools used by their actions and scripts.  
+
+Example:  
+  Customer sets `http_proxy=http://127.0.0.1:8888` and configures the runner against `https://github.com/owner/repo`, with the `https_proxy` -> `http_proxy` fallback, the runner will connect to the server without any problem. However, if a user runs `git push` to `https://github.com/owner/repo`, `git` won't use the proxy since it requires `https_proxy` to be set for any https traffic.
+
+> `golang`, `node.js`, and other dev tools from the Linux community use `http_proxy` for both http and https traffic based on my research.
+
+A majority of our users are using Linux where these variables are commonly required to be set by various programs. By reading these values, we simplify the process for self-hosted runners to set up a proxy and expose it in a way users are already familiar with.
+
+A password provided for a proxy will be masked in the logs.
+
+We will support the lowercase and uppercase variants, with lowercase taking priority if both are set.
+
+### No Proxy Format
+
+While exact implementations are different per application on handling `no_proxy` env, most applications accept a comma-separated list of hosts. Some accept wildcard characters (`*`). We are going to do exact case-insensitive matches, and not support wildcards at this time.
+For example:
+- `example.com` will match `example.com`, `foo.example.com`, and `foo.bar.example.com`
+- `foo.example.com` will match `bar.foo.example.com` and `foo.example.com`
+
+We will not support IP addresses for `no_proxy`, only hostnames.
+
+## Consequences
+
+1. Enterprises and organizations needing proxy support will be able to embrace self-hosted runners
+2. Users will need to set these environment variables before configuring the runner in order to use a proxy when configuring
+3. The runner will read from the environment variables during config and runtime and use the provided proxy if it exists
+4. Users may need to pass these environment variables into other applications if they do not natively take these variables
+5. Action authors may need to update their workflows to react to these environment variables
+6. We will document the way of setting environment variables for runners using the environment variables and how the runner uses them
+7. Like all other secrets, users will be able to relatively easily figure out the proxy password if they can modify a workflow file running on a self-hosted machine

docs/adrs/0274-step-outcome-and-conclusion.md

@@ -0,0 +1,62 @@
+# ADR 0274: Step outcome and conclusion
+
+**Date**: 2020-01-13
+
+**Status**: Accepted
+
+## Context
+
+This ADR proposes adding `steps.<id>.outcome` and `steps.<id>.conclusion` to the steps context.
+
+This allows downstream a step to run based on whether a previous step succeeded or failed.
+
+Reminder, currently the steps contains `steps.<id>.outputs`.
+
+## Decision
+
+For steps that have completed, populate `steps.<id>.outcome` and `steps.<id>.conclusion` with one of the following values:
+
+- `success`
+- `failure`
+- `cancelled`
+- `skipped`
+
+When a continue-on-error step fails, the outcome will be `failure` even though the final conclusion is `success`.
+
+### Example
+
+```yaml
+steps:
+
+  - id: experimental
+    continue-on-error: true
+    run: ./build.sh experimental
+
+  - if: ${{ steps.experimental.outcome == 'success' }}
+    run: ./publish.sh experimental
+```
+
+### Terminology
+
+The runs API uses the term `conclusion`.
+
+Therefore we use a different term `outcome` for the value prior to continue-on-error.
+
+The following is a snippet from the runs API response payload:
+
+```json
+      "steps": [
+        {
+          "name": "Set up job",
+          "status": "completed",
+          "conclusion": "success",
+          "number": 1,
+          "started_at": "2020-01-09T11:06:16.000-05:00",
+          "completed_at": "2020-01-09T11:06:18.000-05:00"
+        },
+```
+
+## Consequences
+
+- Update runner
+- Update [docs](https://help.github.com/en/actions/automating-your-workflow-with-github-actions/contexts-and-expression-syntax-for-github-actions#steps-context)

docs/adrs/0276-problem-matchers.md

@@ -0,0 +1,263 @@
+# ADR 0276: Problem Matchers
+
+**Date** 2019-06-05
+
+**Status** Accepted
+
+## Context
+
+Compilation failures during a CI build should surface good error messages.
+
+For example, the actual compile errors from the typescript compiler should bubble as issues in the UI. And not simply "tsc exited with exit code 1".
+
+VSCode has an extensible model for solving this type of problem. VSCode allows users to configure which problems matchers to use, when scanning output. For example, a user can apply the `tsc` problem matcher to receive a rich error output experience in VSCode, when compiling their typescript project.
+
+The problem-matcher concept fits well with "setup" actions. For example, the `setup-nodejs` action will download node.js, add it to the PATH, and register the `tsc` problem matcher. For the duration of the job, the `tsc` problem matcher will be applied against the output.
+
+## Decision
+
+### Registration
+
+#### Using `##` command
+
+`##[add-matcher]path-to-problem-matcher-config.json`
+
+Using a `##` command allows for flexibility:
+- Ad hoc scripts can register problem matchers
+- Allows problem matchers to be conditionally registered
+
+Note, if a matcher with the same name is registered a second time, it will clobber the first instance.
+
+#### Unregister using `##` command
+
+A way out for rare cases where scoping is a problem.
+
+`##[remove-matcher]owner`
+
+For this to be usable, the `owner` needs to be discoverable. Therefore, debug print the owner on registration.
+
+### Single line matcher
+
+Consider the output:
+
+```
+[...]
+
+Build FAILED.
+
+"C:\temp\problemmatcher\myproject\ConsoleApp1\ConsoleApp1.sln" (default target) (1) ->
+"C:\temp\problemmatcher\myproject\ConsoleApp1\ConsoleApp1\ConsoleApp1.csproj" (default target) (2) ->
+"C:\temp\problemmatcher\myproject\ConsoleApp1\ClassLibrary1\ClassLibrary1.csproj" (default target) (3) ->
+(CoreCompile target) -> 
+  Class1.cs(16,24): warning CS0612: 'ClassLibrary1.Helpers.MyHelper.Name' is obsolete [C:\temp\problemmatcher\myproject\ConsoleApp1\ClassLibrary1\ClassLibrary1.csproj]
+
+
+"C:\temp\problemmatcher\myproject\ConsoleApp1\ConsoleApp1.sln" (default target) (1) ->
+"C:\temp\problemmatcher\myproject\ConsoleApp1\ConsoleApp1\ConsoleApp1.csproj" (default target) (2) ->
+"C:\temp\problemmatcher\myproject\ConsoleApp1\ClassLibrary1\ClassLibrary1.csproj" (default target) (3) ->
+(CoreCompile target) -> 
+  Helpers\MyHelper.cs(16,30): error CS1002: ; expected [C:\temp\problemmatcher\myproject\ConsoleApp1\ClassLibrary1\ClassLibrary1.csproj]
+
+    1 Warning(s)
+    1 Error(s)
+```
+
+The below match configuration uses a regular expression to discover problem lines. And the match groups are mapped into issue-properties.
+
+```json
+"owner": "msbuild",
+"pattern": [
+  {
+    "regexp": "^\\s*([^:]+)\\((\\d+),(\\d+)\\): (error|warning) ([^:]+): (.*) \\[(.+)\\]$",
+    "file": 1,
+    "line": 2,
+    "column": 3,
+    "severity": 4,
+    "code": 5,
+    "message": 6,
+    "fromPath": 7
+  }
+]
+```
+
+The above output and match configuration produces the following matches:
+
+```
+line:     Class1.cs(16,24): warning CS0612: 'ClassLibrary1.Helpers.MyHelper.Name' is obsolete [C:\myrepo\myproject\ConsoleApp1\ClassLibrary1\ClassLibrary1.csproj]
+file:     Class1.cs
+line:     16
+column:   24
+severity: warning
+code:     CS0612
+message:  'ClassLibrary1.Helpers.MyHelper.Name' is obsolete
+fromPath: C:\myrepo\myproject\ConsoleApp1\ClassLibrary1\ClassLibrary1.csproj
+```
+
+```
+line:     Helpers\MyHelper.cs(16,30): error CS1002: ; expected [C:\myrepo\myproject\ConsoleApp1\ClassLibrary1\ClassLibrary1.csproj]
+file:     Helpers\MyHelper.cs
+line:     16
+column:   30
+severity: error
+code:     CS1002
+message:  ; expected
+fromPath: C:\myrepo\myproject\ConsoleApp1\ClassLibrary1\ClassLibrary1.csproj
+```
+
+Additionally the line will appear red in the web UI (prefix with `##[error]`).
+
+Note, an error does not imply task failure. Exit codes communicate failure.
+
+Note, strip color codes when evaluating regular expressions.
+
+### Multi-line matcher
+
+Consider the below output from ESLint in stylish mode. The file name is printed once, yet multiple error lines are printed.
+
+```
+test.js
+  1:0   error  Missing "use strict" statement                 strict
+  5:10  error  'addOne' is defined but never used             no-unused-vars
+✖ 2 problems (2 errors, 0 warnings)
+```
+
+The below match configuration uses multiple regular expressions, for the multiple lines.
+
+And the last pattern of a multiline matcher can specify the `loop` property. This allows multiple errors to be discovered.
+
+```json
+"owner": "eslint-stylish",
+"pattern": [
+  {
+    "regexp": "^([^\\s].*)$",
+    "file": 1
+  },
+  {
+    "regexp": "^\\s+(\\d+):(\\d+)\\s+(error|warning|info)\\s+(.*)\\s\\s+(.*)$",
+    "line": 1,
+    "column": 2,
+    "severity": 3,
+    "message": 4,
+    "code": 5,
+    "loop": true
+  }
+]
+```
+
+The above output and match configuration produces two matches:
+
+```
+line:     1:0   error  Missing "use strict" statement                 strict
+file:     test.js
+line:     1
+column:   0
+severity: error
+message:  Missing "use strict" statement
+code:     strict
+```
+
+```
+line:     5:10  error  'addOne' is defined but never used             no-unused-vars
+file:     test.js
+line:     5
+column:   10
+severity: error
+message:  'addOne' is defined but never used
+code:     no-unused-vars
+```
+
+Note, in the above example only the error line will appear red in the web UI. The \"file\" line will not appear red.
+
+### Other details
+
+#### Configuration `owner`
+
+Can be used to stomp over or remove.
+
+#### Rooting the file
+
+The goal of the file information is to provide a hyperlink in the UI.
+
+Solving this problem means:
+- Rooting the file when unrooted:
+  - Use the `fromPath` if specified (assume file path)
+  - Use the `github.workspace` (where the repo is cloned on disk)
+- Match against a repository to determine the relative path within the repo
+
+This is a place where we diverge from VSCode. VSCode task configurations are specific to the local workspace (workspace root is known or can be specified). We're solving a more generic problem, so we need more information - specifically the `fromPath` property - in order to accurately root the path.
+
+In order to avoid creating inaccurate hyperlinks on the error issues, the agent will verify the file exists and is in the main repository. Otherwise omit the file property from the error issue and debug trace what happened.
+
+#### Supported severity levels
+
+Ordinal ignore case:
+
+- `warning`
+- `error`
+
+Coalesce empty with \"error\". For any other values, omit logging an issue and debug trace what happened.
+
+#### Default severity level
+
+Problem matchers are unable to interpret severity strings other than `warning` and `error`. The `severity` match group expects `warning` or `error` (case insensitive).
+
+However some tools indicate error/warning in different ways. For example `flake8` uses codes like `E100`, `W200`, and `F300` (error, warning, fatal, respectively).
+
+Therefore, allow a property `severity`, sibling to `owner`, which identifies the default severity for the problem matcher. This allows two problem matchers to be registered - one for warnings and one for errors.
+
+For example, given the following `flake8` output:
+
+```
+./bootcamp/settings.py:156:80: E501 line too long (94 > 79 characters)
+./bootcamp/settings.py:165:5: F403 'from local_settings import *' used; unable to detect undefined names
+```
+
+Two problem matchers can be used:
+
+```json
+{
+    "problemMatcher": [
+        {
+            "owner": "flake8",
+            "pattern": [
+                {
+                    "regexp": "^(.+):(\\d+):(\\d+): ([EF]\\d+) (.+)$",
+                    "file": 1,
+                    "line": 2,
+                    "column": 3,
+                    "code": 4,
+                    "message": 5
+                }
+            ]
+        },
+        {
+            "owner": "flake8-warnings",
+            "severity": "warning",
+            "pattern": [
+                {
+                    "regexp": "^(.+):(\\d+):(\\d+): (W\\d+) (.+)$",
+                    "file": 1,
+                    "line": 2,
+                    "column": 3,
+                    "code": 4,
+                    "message": 5
+                }
+            ]
+        }
+    ]
+}
+```
+
+#### Mitigate regular expression denial of service (ReDos)
+
+If a matcher exceeds a 1 second timeout when processing a line, retry up to two three times total.
+After three unsuccessful attempts, warn and eject the matcher. The matcher will not run again for the duration of the job.
+
+### Where we diverge from VSCode
+
+- We added the `fromPath` concept for rooting paths. This is done differently in VSCode, since a task is the scope (root path well known). For us, the job is the scope.
+- VSCode allows additional activation info background tasks that are always running (recompile on files changed). They allow regular expressions to define when the matcher scope begins and ends. This is an interesting concept that we could leverage to help solve our scoping problem.
+
+## Consequences
+
+- Setup actions should register problem matchers

docs/adrs/0277-run-action-shell-options.md

@@ -0,0 +1,93 @@
+# ADR 0277: Run action shell option
+
+**Date** 2019-07-09
+
+**Status** Accepted
+
+## Context
+run-actions run scripts using a platform specific shell:
+`bash -eo pipefail` on non-windows, and `cmd.exe /c /d /s` on windows
+
+The `shell` option overrides this to allow different flags or completely different shells/interpreters
+
+A small example is:
+```yml
+jobs:
+  bash-job:
+    actions:
+    - run: echo "Hello"
+      shell: bash
+  python-job:
+    actions:
+    - run: print("Hello")
+      shell: python {0}
+```
+
+## Decision
+
+___
+
+### Shell option
+The keyword being used is `shell` 
+
+`shell` can be either:
+
+1. Builtins / Explicitly supported keywords. It is useful to support at least `cmd`, and `powershell` on Windows. Because `cmd my_cmd_script` and `powershell my_ps1_script` are not valid the same way many Linux/cross-platform interpreters are, e.g. `bash myscript` or `python myscript`. Those tools (and potentially others) also require the correct file extension to run, or must be run in a particular way to get the exit codes consistently, so we must have first class knowledge about them. We provide default templates for these keywords as follows:
+    - `cmd`: Default is: `%ComSpec% /D /E:ON /V:OFF /S /C "CALL "{0}""` where the script name is automatically appended with `.cmd` and substituted for `{0}`
+        - Note this is equivalent to the default Windows behavior if no shell option is given
+    - `pwsh`: Default is: `pwsh -command "& '{0}'"` where the script is automatically appended with `.ps1`
+    - `powershell`: Default is: `powershell -command "& '{0}'"` where the script is automatically appended with `.ps1`
+    - `bash`: Uses `bash --noprofile --norc -eo pipefail {0}`
+        - The default behavior on non-Windows if no shell is given is to attempt this first
+    - `sh`: Uses `sh -e {0}`
+        - This is the default behavior on non-Windows if no shell is given, AND `bash` (see above) was not located on the PATH
+    - `python`: `python {0}`
+    - **NOTE**: The exact command ran may vary by machine. We only provide default arguments and command format for the listed shell. While the above behavior is expected on hosted machines, private runners may vary. For example, `sh` (or other commands) may actually be a link to `/bin/dash`, `/bin/bash`, or other
+
+1. A template string: `command [...options] {0} [...more_options]`
+    - As above, the file name of the temporary script will be templated in. This gives users more control to have options at any location relative to the script path
+    - The first whitespace-delimited word of the string will be interpreted as the command
+    - e.g. `python {0} arg1 arg2` or similar can be used if passing args is needed. Some shells will require other options after the filename for various reasons
+
+Note that (1) simply provides defaults that are executed with the same mechanism as (2). That is:
+- A temporary script file is generated, and the path to that file is templated into the string at `{0}`
+- The first word of the formatted string is assumed to be a command, and we attempt to locate its full path
+- The fully qualified path to the command, plus the remaining arguments, is executed
+    - e.g. `shell: bash` expands to `/bin/bash --noprofile --norc -eo pipefail /runner/_layout/_work/_temp/f8d4fb2b-19d9-47e6-a786-4cc538d52761.sh` on my private runner
+
+At this time, **THE LIST OF WELL-KNOWN SHELL OPTIONS IS**:
+- cmd - Windows (hosted vs2017, vs2019) only
+- powershell - Windows (hosted vs2017, vs2019) only
+- sh - All hosted platforms
+- pwsh - All hosted platforms
+- bash - All hosted platforms
+- python - All hosted platforms. Can use setup-python to configure which python will be used
+___
+
+### Containers
+For container jobs, `shell` should just work the same as above, transparently. We will simply `exec` the command in the job container, passing the same arguments in
+
+___
+
+### Exit codes / Error action preference
+
+For builtin shells, we provide defaults that make the most sense for CI, running within Actions, and being executed by our runner
+
+bash/sh:
+- Fail-fast behavior using `set -e o pipefail` is the default for `bash` and `shell` builtins, and by default when no option is given on non-Windows platforms
+- Users can opt out of fail-fast and take full control easily by providing a template string to the shell options, eg: `bash {0}`.
+- sh-like shells exit with the exit code of the last command executed in a script, and is our default behavior. Thus the runner reports the status of the step as fail/succeed based on this exit code
+
+powershell/pwsh
+- Fail-fast behavior when possible. For `pwsh` and `powershell` builtins, we will prepend `$ErrorActionPreference = 'stop'` to script contents
+- We append `if ((Test-Path -LiteralPath variable:\LASTEXITCODE)) { exit $LASTEXITCODE }` to powershell scripts to get Action statuses to reflect the script's last exit code
+- Users can always opt out by not using the builtins, and providing a shell option like: `pwsh -File {0}`, or `powershell -Command "& '{0}'"`, depending on need
+
+cmd
+- There doesn't seem to be a way to fully opt in to fail-fast behavior other than writing your script to check each error code and respond accordingly, so we can't actually provide that behavior by default, it will be completely up to the user to write this behavior into their script
+- cmd.exe will exit (return the error code to the runner) with the errorlevel of the last program it executed. This is internally consistent with the previous default behavior (sh, pwsh) and is the cmd.exe default, so we keep that behavior
+
+## Consequences
+Valid `shell` options will depend on the hosted images. We will need to maintain tight image compat
+
+First class support for a shell will require a major version schema change to modify. We cannot remove or modify the behavior of a well-known supported option, However, adding first class support for new shells is backwards compatible. For instance, we can add a well-known `python` option, because non-well-known options would have always needed to include `{0}`, e.g. `python {0}`

docs/adrs/0278-env-context.md

@@ -0,0 +1,60 @@
+# ADR 0278: Env Context
+
+**Date**: 2019-09-30
+
+**Status**: Accepted
+
+## Context
+
+User wants to reference workflow variables defined in workflow yaml file for action's input, displayName and condition.  
+
+## Decision
+
+### Add `env` context in the runner
+
+Runner will create and populate the `env` context for every job execution using following logic:
+1. On job start, create `env` context with any environment variables in the job message, these are env defined in customer's YAML file's job/workflow level `env` section.
+2. Update `env` context when customer use `::set-env::` to set env at the runner level.
+3. Update `env` context with step's `env` block before each step runs.
+
+The `env` context is only available in the runner, customer can't use the `env` context in any server evaluation part, just like the `runner` context
+
+Example yaml:
+```yaml
+
+env:
+  env1: 10
+  env2: 20
+  env3: 30
+jobs:
+  build:
+    env:
+      env1: 100
+      env2: 200
+    runs-on: ubuntu-latest
+    steps:
+      - run: |
+          echo ${{ env.env1 }}  // 1000
+          echo $env1            // 1000
+          echo $env2            // 200
+          echo $env3            // 30
+        if: env.env2 == 200     // true
+        name: ${{ env.env1 }}_${{ env.env2 }}   //1000_200
+        env:
+          env1: 1000
+```
+
+### Don't populate the `env` context with environment variables from runner machine. 
+
+With job container and container action, the `env` context may not have the right value customer want and will cause confusion.  
+Ex:
+```yaml
+build:
+  runs-on: ubuntu-latest   <- $USER=runner in hosted machine
+  container: ubuntu:16.04   <- $USER=root in container
+  steps:
+  - run: echo ${{env.USER}}    <- what should customer expect this output?  runner/root
+  - uses: docker://ubuntu:18.04
+    with:
+      args: echo ${{env.USER}}  <- what should customer expect this output? runner/root
+```

docs/adrs/0279-hashFiles-expression-function.md

@@ -0,0 +1,71 @@
+# ADR 0279: HashFiles Expression Function
+
+**Date**: 2019-09-30
+
+**Status**: Accepted
+
+## Context
+First party action `actions/cache` needs a input which is an explicit `key` used for restoring and saving the cache. For packages caching, the most common `key` might be the hash result of contents from all `package-lock.json` under `node_modules` folder.
+  
+There are serval different ways to get the hash `key` input for `actions/cache` action.
+
+1. Customer calculate the `key` themselves from a different action, customer won't like this since it needs extra step for using cache feature
+```yaml
+  steps:
+  - run: |
+      hash=some_linux_hash_method(file1, file2, file3)
+      echo ::set-output name=hash::$hash
+    id: createHash
+  - uses: actions/cache@v1
+    with:
+      key: ${{ steps.createHash.outputs.hash }}
+``` 
+
+2. Make the `key` input of `actions/cache` follow certain convention to calculate hash, this limited the `key` input to a certain format customer may not want.
+```yaml
+  steps:
+  - uses: actions/cache@v1
+    with:
+      key: ${{ runner.os }}|${{ github.workspace }}|**/package-lock.json
+```
+
+## Decision
+
+### Add hashFiles() function to expression engine for calculate files' hash
+
+`hashFiles()` will only allow on runner side since it needs to read files on disk, using `hashFiles()` on any server side evaluated expression will cause runtime errors.
+
+`hashFiles()` will only support hashing files under the `$GITHUB_WORKSPACE` since the expression evaluated on the runner, if customer use job container or container action, the runner won't have access to file system inside the container.
+
+`hashFiles()` will only take 1 parameters:
+ - `hashFiles('**/package-lock.json')`  // Search files under `$GITHUB_WORKSPACE` and calculate a hash for them
+
+**Question: Do we need to support more than one match patterns?**  
+Ex: `hashFiles('**/package-lock.json', '!toolkit/core/package-lock.json', '!toolkit/io/package-lock.json')`  
+Answer: Only support single match pattern for GA, we can always add later.
+
+This will help customer has better experience with the `actions/cache` action's input.
+```yaml
+  steps:
+  - uses: actions/cache@v1
+    with:
+      key: ${{hashFiles('**/package-lock.json')}}-${{github.ref}}-${{runner.os}}
+```
+
+For search pattern, we will use basic globbing (`*`, `?`, and `[]`) and globstar (`**`).
+
+Additional pattern details:
+- Root relative paths with `github.workspace` (the main repo)
+- Make `*` match files that start with `.`
+- Case insensitive on Windows
+- Accept `\` or `/` path separators on Windows
+
+Hashing logic:
+1. Get all files under `$GITHUB_WORKSPACE`.
+2. Use search pattern filter all files to get files that matches the search pattern. (search pattern only apply to file path not folder path)
+3. Sort all matched files by full file path in alphabet order.
+4. Use SHA256 algorithm to hash each matched file and store hash result.
+5. Use SHA256 to hash all stored files' hash results to get the final 64 chars hash result.
+
+**Question: Should we include the folder structure info into the hash?**  
+Answer: No

docs/adrs/0280-command-input-echoing.md

@@ -0,0 +1,30 @@
+# ADR 0280: Echoing of Command Input
+
+**Date**: 2019-11-04  
+
+**Status**: Accepted
+
+## Context
+
+Command echoing as a default behavior tends to clutter the user logs, so we want to swap to a system where users have to opt in to see this information.
+
+Command outputs will still be echoed in the case there are any errors processing such commands. This is so the end user can have more context on why the command failed and help with troubleshooting.
+
+Echo output in the user logs can be explicitly controlled by the new commands `::echo::on` and `::echo::off`. By default, echoing is enabled if `ACTIONS_STEP_DEBUG` secret is enabled, otherwise echoing is disabled.
+
+## Decision
+- The only commands that currently echo output are
+  - `remove-matcher`
+  - `add-matcher`
+  - `add-path`
+- These will no longer echo the command, if processed successfully
+- All commands echo the input when any of these conditions is fulfilled:
+  1. When such commands fail with an error
+  2. When `::echo::on` is set
+  3. When the `ACTIONS_STEP_DEBUG` is set, and echoing hasn't been explicitly disabled with `::echo::off`
+- There are a few commands that won't be echoed, even when echo is enabled. These are (as of 2019/11/04):
+   - `add-mask`
+   - `debug`
+   - `warning`
+   - `error`
+- The three commands above will not echo, either because echoing the command would leak secrets (e.g. `add-mask`), or it would not add any additional troubleshooting information to the logs (e.g. `debug`). It's expected that future commands would follow these "echo-suppressing" guidelines as well. Echo-suppressed commands are still free to output other information to the logs, as deemed fit.

docs/adrs/0297-base64-masking-trailing-characters.md

@@ -0,0 +1,48 @@
+# ADR 0297: Base64 Masking Trailing Characters
+
+**Date** 2020-01-21
+
+**Status** Proposed
+
+## Context
+
+The Runner registers a number of Value Encoders, which mask various encodings of a provided secret. Currently, we register a 3 base64 Encoders:
+- The base64 encoded secret
+- The secret with the first character removed then base64 encoded
+- The secret with the first two characters removed then base64 encoded
+
+This gives us good coverage across the board for secrets and secrets with a prefix (i.e. `base64($user:$pass)`).
+
+However, we don't have great coverage for cases where the secret has a string appended to it before it is base64 encoded (i.e.: `base64($pass\n))`). 
+
+Most notably we've seen this as a result of user error where a user accidentally appends a newline or space character before encoding their secret in base64.
+
+## Decision
+
+### Trim end characters
+
+We are going to modify all existing base64 encoders to trim information before registering as a secret.
+We will trim:
+- `=` from the end of all base64 strings. This is a padding character that contains no information. 
+  - Based on the number of `=`'s at the end of a base64 string, a malicious user could predict the length of the original secret modulo 3. 
+    - If a user saw `***==`, they would know the secret could be 1,4,7,10... characters.
+- If a string contains `=` we will also trim the last non-padding character from the base64 secret.
+  - This character can change if a string is appended to the secret before the encoding.
+
+
+### Register a fourth encoder
+
+We will also add back in the original base64 encoded secret encoder for four total encoders:
+- The base64 encoded secret
+- The base64 encoded secret trimmed
+- The secret with the first character removed then base64 encoded and trimmed
+- The secret with the first two characters removed then base64 encoded and trimmed
+
+This allows us to fully cover the most common scenario where a user base64 encodes their secret and expects the entire thing to be masked.
+This will result in us only revealing length or bit information when a prefix or suffix is added to a secret before encoding. 
+
+## Consequences
+
+- In the case where a secret has a prefix or suffix added before base64 encoding, we may now reveal up to 20 bits of information and the length of the original string modulo 3, rather then the original 16 bits and no length information
+- Secrets with a suffix appended before encoding will now be masked across the board. Previously it was only masked if it was a multiple of 3 characters
+- Performance will suffer in a negligible way

docs/adrs/0354-runner-machine-info.md

@@ -0,0 +1,35 @@
+# ADR 354: Expose runner machine info
+
+**Date**: 2020-03-02
+
+**Status**: Pending
+
+## Context
+
+- Provide a mechanism in the runner to include extra information in `Set up job` step's log.
+  Ex: Include OS/Software info from Hosted image.
+
+## Decision
+
+The runner will look for a file `.setup_info` under the runner's root directory, The file can be a JSON with a simple schema.
+```json
+[
+  {
+    "group": "OS Detail",
+    "detail": "........"
+  },
+  {
+    "group": "Software Detail",
+    "detail": "........"
+  }
+]
+```
+The runner will use `##[group]` and `##[endgroup]` to fold all detail info into an expandable group.
+
+Both [virtual-environments](https://github.com/actions/virtual-environments) and self-hosted runners can use this mechanism to add extra logging info to the `Set up job` step's log.
+
+## Consequences
+
+1. Change the runner to best effort read/parse `.extra_setup_info` file under runner root directory.
+2. [virtual-environments](https://github.com/actions/virtual-environments) generate the file during image generation.
+3. Change MMS provisioner to properly copy the file to runner root directory at runtime.

docs/adrs/0361-wrapper-action.md

@@ -0,0 +1,75 @@
+# ADR 361: Wrapper Action
+
+**Date**: 2020-03-06
+
+**Status**: Pending
+
+## Context
+
+In addition to action's regular execution, action author may wants their action to have a chance to participate in:
+- Job initialization
+  My Action will collect machine resource usage (CPU/RAM/Disk) during a workflow job execution, we need to start perf recorder at the beginning of the job.
+- Job cleanup
+  My Action will dirty local workspace or machine environment during execution, we need to cleanup these changes at the end of the job.  
+  Ex: `actions/checkout@v2` will write `github.token` into local `.git/config` during execution, it has post job cleanup defined to undo the changes.
+
+## Decision
+
+### Add `pre` and `post` execution to action
+
+Node Action Example:
+
+```yaml
+ name: 'My action with pre'
+ description: 'My action with pre'
+ runs:
+   using: 'node12'
+   pre: 'setup.js'
+   pre-if: 'success()' // Optional
+   main: 'index.js'
+   post: 'cleanup.js'
+   post-if: 'success()' // Optional
+```
+
+Container Action Example:
+
+```yaml
+ name: 'My action with pre'
+ description: 'My action with pre'
+ runs:
+   using: 'docker'
+   image: 'mycontainer:latest'
+   pre-entrypoint: 'setup.sh'
+   pre-if: 'success()' // Optional
+   entrypoint: 'entrypoint.sh'
+   post-entrypoint: 'cleanup.sh'
+   post-if: 'success()' // Optional
+```
+
+Both `pre` and `post` will have default `pre-if/post-if` set to `always()`.  
+Setting `pre` to `always()` will make sure no matter what condition evaluate result the `main` gets at runtime, the `pre` has always run already.   
+`pre` executes in order of how the steps are defined.  
+`pre` will always be added to job steps list during job setup.  
+> Action referenced from local repository (`./my-action`) won't get `pre` setup correctly since the repository haven't checked-out during job initialization.
+> We can't use GitHub api to download the repository since there is about a 3 minute delay between `git push` and the new commit available to download using GitHub api.
+
+`post` will be pushed into a `poststeps` stack lazily when the action's `pre` or `main` execution passed `if` condition check and about to run, you can't have an action that only contains a `post`, we will pop and run each `post` after all `pre` and `main` finished.
+> Currently `post` works for both repository action (`org/repo@v1`) and local action (`./my-action`)
+
+Valid action:
+- only has `main`
+- has `pre` and `main`
+- has `main` and `post`
+- has `pre`, `main`, and `post`
+
+Invalid action:
+- only has `pre`
+- only has `post`
+- has `pre` and `post`
+
+Potential downside of introducing `pre`:
+
+- Extra magic wrt step order. Users should control the step order. Especially when we introduce templates.  
+- Eliminates the possibility to lazily download the action tarball, since `pre` always run by default, we have to download the tarball to check whether action defined a `pre`  
+- `pre` doesn't work with local action, we suggested customer use local action for testing their action changes, ex CI for their action, to avoid delay between `git push` and GitHub repo tarball download api.  
+- Condition on the `pre` can't be controlled using dynamic step outputs. `pre` executes too early.

docs/adrs/0397-runner-registration-labels.md

@@ -0,0 +1,56 @@
+# ADR 0397: Support adding custom labels during runner config
+**Date**: 2020-03-30
+
+**Status**: Approved
+
+## Context
+
+Since configuring self-hosted runners is commonly automated via scripts, the labels need to be able to be created during configuration.  The runner currently registers the built-in labels (os, arch) during registration but does not accept labels via command line args to extend the set registered.
+
+See Issue: https://github.com/actions/runner/issues/262
+
+This is another version of [ADR275](https://github.com/actions/runner/pull/275)
+
+## Decision
+
+This ADR proposes that we add a `--labels` option to the `config`, which could be used to add custom additional labels to the configured runner.
+
+For example, to add a single additional label the operator could run:
+```bash
+./config.sh --labels mylabel
+```
+> Note: the current runner command line parsing and envvar override algorithm only support a single argument (key).
+
+This would add the label `mylabel` to the runner, and enable users to select the runner in their workflow using this label:
+```yaml
+runs-on: [self-hosted, mylabel]
+```
+
+To add multiple labels the operator could run:
+```bash
+./config.sh --labels mylabel,anotherlabel
+```
+> Note: the current runner command line parsing and envvar override algorithm only supports a single argument (key).
+
+This would add the label `mylabel` and `anotherlabel` to the runner, and enable users to select the runner in their workflow using this label:
+```yaml
+runs-on: [self-hosted, mylabel, anotherlabel]
+```
+
+It would not be possible to remove labels from an existing runner using `config.sh`, instead labels would have to be removed using the GitHub UI.
+
+The labels argument will split on commas, trim and discard empty strings.  That effectively means don't use commas in unattended config label names.  Alternatively, we could choose to escape commas but it's a nice to have.
+
+## Replace
+
+If an existing runner exists and the option to replace is chosen (interactively or via unattended as in this scenario), then the labels will be replaced/overwritten (not merged).
+
+## Overriding built-in labels
+
+Note that it is possible to register "built-in" hosted labels like `ubuntu-latest` and is not considered an error.  This is an effective way for the org/runner admin to dictate by policy through registration that this set of runners will be used without having to edit all the workflow files now and in the future.
+
+We will also not make other restrictions such as limiting explicitly adding os/arch labels and validating.  We will assume that explicit labels were added for a reason and not restricting offers the most flexibility and future-proofing / compatibility.
+
+## Consequences
+
+The ability to add custom labels to a self-hosted runner would enable most scenarios where job runner selection based on runner capabilities or characteristics are required.

docs/adrs/0549-composite-run-steps.md

@@ -0,0 +1,378 @@
+# ADR 0549: Composite Run Steps
+
+**Date**: 2020-06-17
+
+**Status**: Accepted
+
+## Context
+
+Customers want to be able to compose actions from actions (ex: https://github.com/actions/runner/issues/438)
+
+An important step towards meeting this goal is to build functionality for actions where users can simply execute any number of steps. 
+
+### Guiding Principles
+
+We don't want the workflow author to need to know how the internal workings of the action work. Users shouldn't know the internal workings of the composite action (for example, `default.shell` and `default.workingDir` should not be inherited from the workflow file to the action file). When deciding how to design certain parts of composite run steps, we want to treat it as one logical step for the consumer.
+
+A composite action is treated as **one** individual job step (this is known as encapsulation).
+
+## Decision
+
+**In this ADR, we only support running multiple run steps in an Action.** In doing so, we build in support for mapping and flowing the inputs, outputs, and env variables (ex: All nested steps should have access to their parents' input variables and nested steps can overwrite the input variables).
+
+### Composite Run Steps Features
+This feature supports at the top action level:
+- name
+- description
+- inputs
+- runs
+- outputs
+
+This feature supports at the run step level:
+- name
+- id
+- run
+- env
+- shell
+- working-directory
+
+This feature **does not support** at the run step level:
+- timeout-minutes
+- secrets
+- conditionals (needs, if, etc.)
+- continue-on-error
+
+### Steps
+
+Example `workflow.yml`
+
+```yaml
+jobs:
+  build:
+    runs-on: self-hosted
+    steps:
+    - id: step1
+      uses: actions/setup-python@v1
+    - id: step2
+      uses: actions/setup-node@v2
+    - uses: actions/checkout@v2
+    - uses: user/composite@v1
+    - name: workflow step 1
+      run: echo hello world 3
+    - name: workflow step 2
+      run: echo hello world 4
+```
+
+Example `user/composite/action.yml`
+
+```yaml
+runs:
+  using: "composite"
+  steps:
+    - run: pip install -r requirements.txt
+      shell: bash
+    - run: npm install
+      shell: bash
+```
+
+Example Output
+
+```yaml
+[npm installation output]
+[pip requirements output]
+echo hello world 3
+echo hello world 4
+```
+
+We add a token called "composite" which allows our Runner code to process composite actions. By invoking "using: composite", our Runner code then processes the "steps" attribute, converts this template code to a list of steps, and finally runs each run step sequentially. If any step fails and there are no `if` conditions defined, the whole composite action job fails. 
+
+### Defaults
+
+We will not support "defaults" in a composite action. 
+
+### Shell and Working-directory
+
+For each run step in a composite action, the action author can set the `shell` and `working-directory` attributes for that step. The shell attribute is **required** for each run step because the action author does not know what the workflow author is using for the operating system so we need to explicitly prevent unknown behavior by making sure that each run step has an explicit shell **set by the action author.** On the other hand, `working-directory` is optional. Moreover, the composite action author can map in values from the `inputs` for its `shell` and `working-directory` attributes at the step level for an action. 
+
+For example,
+
+`action.yml`
+
+
+```yaml
+inputs:
+  shell_1:
+    description: 'Your name'
+    default: 'pwsh'
+steps:
+  - run: echo 1
+    shell: ${{ inputs.shell_1 }}
+```
+
+Note, the workflow file and action file are treated as separate entities. **So, the workflow `defaults` will never change the `shell` and `working-directory` value in the run steps in a composite action.** Note, `defaults` in a workflow only apply to run steps not "uses" steps (steps that use an action).
+
+### Running Local Scripts
+
+Example 'workflow.yml':
+```yaml
+jobs:
+  build:
+    runs-on: self-hosted
+    steps:
+    - uses: user/composite@v1
+```
+
+Example `user/composite/action.yml`:
+
+```yaml
+runs:
+  using: "composite"
+  steps: 
+    - run: chmod +x ${{ github.action_path }}/test/script2.sh
+      shell: bash
+    - run: chmod +x $GITHUB_ACTION_PATH/script.sh
+      shell: bash
+    - run: ${{ github.action_path }}/test/script2.sh
+      shell: bash
+    - run: $GITHUB_ACTION_PATH/script.sh
+      shell: bash
+```
+Where `user/composite` has the file structure:
+```
+.
++-- action.yml
++-- script.sh
++-- test
+|   +-- script2.sh
+```
+
+
+Users will be able to run scripts located in their action folder by first prepending the relative path and script name with `$GITHUB_ACTION_PATH` or `github.action_path` which contains the path in which the composite action is downloaded to and where those "files" live. Note, you'll have to use `chmod` before running each script if you do not git check in your script files into your github repo with the executable bit turned on.
+
+### Inputs
+
+Example `workflow.yml`:
+
+```yaml
+steps: 
+  - id: foo
+    uses: user/composite@v1
+    with:
+      your_name: "Octocat"
+```
+
+Example `user/composite/action.yml`:
+
+```yaml
+inputs:
+  your_name:
+    description: 'Your name'
+    default: 'Ethan'
+runs:
+  using: "composite"
+  steps: 
+    - run: echo hello ${{ inputs.your_name }}
+      shell: bash
+```
+
+Example Output:
+
+```
+hello Octocat
+```
+
+Each input variable in the composite action is only viewable in its own scope.
+
+### Outputs
+
+Example `workflow.yml`:
+
+```yaml
+...
+steps: 
+  - id: foo
+    uses: user/composite@v1
+  - run: echo random-number ${{ steps.foo.outputs.random-number }} 
+    shell: bash
+```
+
+Example `user/composite/action.yml`:
+
+```yaml
+outputs:
+  random-number: 
+    description: "Random number"
+    value: ${{ steps.random-number-generator.outputs.random-id }}
+runs:
+  using: "composite"
+  steps: 
+    - id: random-number-generator
+      run: echo "::set-output name=random-id::$(echo $RANDOM)"
+      shell: bash
+```
+
+Example Output:
+
+```
+::set-output name=my-output::43243
+random-number 43243
+```
+
+Each of the output variables from the composite action is viewable from the workflow file that uses the composite action. In other words, every child's action output(s) are only viewable by its parent using dot notation (ex `steps.foo.outputs.random-number`).
+
+Moreover, the output ids are only accessible within the scope where it was defined. Note that in the example above, in our `workflow.yml` file, it should not have access to output id (i.e. `random-id`). The reason why we are doing this is that we don't want to require the workflow author to know the internal workings of the composite action.
+
+### Context
+
+Similar to the workflow file, the composite action has access to the [same context objects](https://help.github.com/en/actions/reference/context-and-expression-syntax-for-github-actions#contexts) (ex: `github`, `env`, `strategy`). 
+
+### Environment
+
+In the Composite Action, you'll only be able to use `::set-env::` to set environment variables just like you could with other actions.
+
+### Secrets
+
+**We will not support "Secrets" in a composite action for now. This functionality will be focused on in a future ADR.**
+
+We'll pass the secrets from the composite action's parents (ex: the workflow file) to the composite action. Secrets can be created in the composite action with the secrets context. In the actions yaml, we'll automatically mask the secret. 
+
+
+### If-Condition
+
+** `If` and `needs` conditions will not be supported in the composite run steps feature. It will be supported later on in a new feature. **
+
+Old reasoning:
+
+Example `workflow.yml`:
+
+```yaml
+steps:
+  - run: exit 1
+  - uses: user/composite@v1  # <--- this will run, as it's marked as always running
+    if: always()
+```
+
+Example `user/composite/action.yml`:
+
+```yaml
+runs:
+  using: "composite"
+  steps:
+    - run: echo "just succeeding"
+      shell: bash
+    - run: echo "I will run, as my current scope is succeeding"
+      shell: bash
+      if: success()
+    - run: exit 1
+      shell: bash
+    - run: echo "I will not run, as my current scope is now failing"
+      shell: bash
+```
+
+**We will not support "if-condition" in a composite action for now. This functionality will be focused on in a future ADR.**
+
+See the paragraph below for a rudimentary approach (thank you to @cybojenix for the idea, example, and explanation for this approach):
+
+The `if` statement in the parent (in the example above, this is the `workflow.yml`) shows whether or not we should run the composite action. So, our composite action will run since the `if` condition for running the composite action is `always()`.
+
+**Note that the "if-condition" on the parent does not propagate to the rest of its children though.**
+
+In the child action (in this example, this is the `action.yml`), it starts with a clean slate (in other words, no imposing if-conditions). Similar to the logic in the paragraph above, `echo "I will run, as my current scope is succeeding"` will run since the `if` condition checks if the previous steps **within this composite action** have not failed. `run: echo "I will not run, as my current scope is now failing"` will not run since the previous step resulted in an error and by default, the if expression is set to `success()` if the if-condition is not set for a step.
+
+
+What if a step has `cancelled()`? We do the opposite of our approach above if `cancelled()` is used for any of our composite run steps. We will cancel any step that has this condition if the workflow is cancelled at all.
+    
+### Timeout-minutes
+
+Example `workflow.yml`:
+
+```yaml
+steps: 
+  - id: bar
+    uses: user/test@v1
+    timeout-minutes: 50
+```
+
+Example `user/composite/action.yml`:
+
+```yaml
+runs:
+  using: "composite"
+  steps: 
+    - id: foo1
+      run: echo test 1
+      timeout-minutes: 10
+      shell: bash
+    - id: foo2
+      run: echo test 2
+      shell: bash
+    - id: foo3
+      run: echo test 3
+      timeout-minutes: 10
+      shell: bash
+```
+
+**We will not support "timeout-minutes" in a composite action for now. This functionality will be focused on in a future ADR.**
+
+A composite action in its entirety is a job. You can set both timeout-minutes for the whole composite action or its steps as long as the sum of the `timeout-minutes` for each composite action step that has the attribute `timeout-minutes` is less than or equals to `timeout-minutes` for the composite action. There is no default timeout-minutes for each composite action step. 
+
+If the time taken for any of the steps in combination or individually exceeds the whole composite action `timeout-minutes` attribute, the whole job will fail (1). If an individual step exceeds its own `timeout-minutes` attribute but the total time that has been used including this step is below the overall composite action `timeout-minutes`, the individual step will fail but the rest of the steps will run based on their own `timeout-minutes` attribute (they will still abide by condition (1) though).
+
+For reference, in the example above, if the composite step `foo1` takes 11 minutes to run, that step will fail but the rest of the steps, `foo1` and `foo2`, will proceed as long as their total runtime with the previous failed `foo1` action is less than the composite action's `timeout-minutes` (50 minutes). If the composite step `foo2` takes 51 minutes to run, it will cause the whole composite action job to fail.
+
+The rationale behind this is that users can configure their steps with the `if` condition to conditionally set how steps rely on each other. Due to the additional capabilities that are offered with combining `timeout-minutes` and/or `if`, we wanted the `timeout-minutes` condition to be as dumb as possible and not affect other steps. 
+
+[Usage limits still apply](https://help.github.com/en/actions/reference/workflow-syntax-for-github-actions?query=if%28%29#usage-limits)
+
+
+### Continue-on-error
+
+Example `workflow.yml`:
+
+```yaml
+steps: 
+  - run: exit 1
+  - id: bar
+    uses: user/test@v1
+    continue-on-error: false
+  - id: foo
+    run: echo "Hello World" <------- This step will not run
+```
+
+Example `user/composite/action.yml`:
+
+```yaml
+runs:
+  using: "composite"
+  steps: 
+    - run: exit 1
+      continue-on-error: true
+      shell: bash
+    - run: echo "Hello World 2" <----- This step will run
+      shell: bash
+```
+
+**We will not support "continue-on-error" in a composite action for now. This functionality will be focused on in a future ADR.**
+
+If any of the steps fail in the composite action and the `continue-on-error` is set to `false` for the whole composite action step in the workflow file, then the steps below it will run. On the flip side, if `continue-on-error` is set to `true` for the whole composite action step in the workflow file, the next job step will run.
+
+For the composite action steps, it follows the same logic as above. In this example, `"Hello World 2"` will be outputted because the previous step has `continue-on-error` set to `true` although that previous step errored. 
+
+### Visualizing Composite Action in the GitHub Actions UI
+We want all the composite action's steps to be condensed into the original composite action node. 
+
+Here is a visual representation of the [first example](#Steps)
+
+```yaml
+| composite_action_node |
+    | echo hello world 1 | 
+    | echo hello world 2 |
+| echo hello world 3 | 
+| echo hello world 4 |
+
+```
+
+
+## Consequences
+
+This ADR lays the framework for eventually supporting nested Composite Actions within Composite Actions. This ADR allows for users to run multiple run steps within a GitHub Composite Action with the support of inputs, outputs, environment, and context for use in any steps as well as the if, timeout-minutes, and the continue-on-error attributes for each Composite Action step. 

docs/adrs/1144-composite-actions.md

@@ -0,0 +1,92 @@
+**Date**: 2021-06-10
+
+**Status**: Accepted
+
+## Context
+
+We released [composite run steps](https://github.com/actions/runner/pull/554) last year which started our journey of reusing steps across different workflow files. To continue that journey, we want to expand composite run steps into composite actions.
+
+We want to support the `uses` steps from workflows in composite actions, including:
+  - Container actions
+  - Javascript actions
+  - Other Composite actions (up to a limit of course!)
+  - The pre and post steps these actions can generate
+
+## Guiding Principles
+
+- Composite Actions should function as a single step or action, no matter how many steps it is composed of or how many levels of recursion it has
+  - In the future we may add a configurable option to make this no longer the case
+- A workflow author should not need to understand the inner workings of a composite action in order to use it
+- Composite actions should leverage inputs to get values they need, they will not have full access to the `context` objects. The secrets context will **not** be available to composite actions, users will need to pass these values in as an input.
+- Other Actions should **just work** inside a composite action, without any code changes
+
+## Decisions
+
+### Composite Recursion Limit
+
+- We will start with supporting a recursion limit of `10` composite actions deep
+- We are free to bump this limit in the future, the code will be written to just require updating a variable. If the graph evaluates beyond the recursion limit, the job will fail in the pre-job phase (The `Set up job` step).
+- A composite actions interface is its inputs and outputs, nothing else is carried over when invoking recursively.
+
+### Pre/Post Steps in nested Actions
+
+- We do not plan on adding the ability to configure a customizable pre or post step for composite actions at this time. However, we will execute the pre and post steps of any actions referenced in a composite action.
+- Composite actions will generate a single pre-step and post-step for the entire composite action, even if there are multiple pre-steps and post-steps in the referenced actions.
+  - These steps will execute following the same ordering rules we have today, first to run has their pre step run first and their post step run last.
+  - For example, if you had a composite action with two pre steps and two posts steps:
+
+  ```
+  - uses: action1
+  - uses: composite1
+  - uses: action2
+  ```
+
+  The order of execution would be:
+
+  ```
+  - prestep-action1
+  - prestep-composite1
+    - prestep-composite1-first-action-referenced
+    - prestep-composite1-second-action-referenced
+  - prestep-action2
+  - the job steps
+  - poststep-action2
+  - poststep-composite1
+    - poststep-composite1-the-second-action-referenced
+    - poststep-composite1-first-action-referenced
+  - poststep-action1
+  ```
+
+#### Set-state
+
+- While the composite action has an individual combined pre/post action, the `set-state` command will not be shared.
+- If the `set-state` command is used during a composite step, only the action that originally called `set-state` will have access to the env variable during the post run step.
+  - This prevents multiple actions that set the same state from interfering with the execution of another action's post step.
+
+### Resolve Action Endpoint changes
+
+- The resolve actions endpoint will now validate policy to ensure that the given workflow run has access to download that action.
+  - Older GHES/GHAE customers with newer runners will be locked out of composite uses steps until they upgrade their instance.
+
+### Local actions
+- Local actions will expand the tree, perform policy checks, and download actions Just in Time when the step is running.
+- Like current local actions, we will not support presteps. If an action is running local, by the time we know that, the time to run presteps have already passed.
+
+### If, continue-on-error, timeout-minutes - Not being considered at this time
+
+- `if`, `continue-on-error`, `timeout-minutes` could be supported in composite run/uses steps. These values were not originally supported in our composite run steps implementation.
+  - Browsing the community forums and runner repo, there hasn't been a lot of noise asking for these features, so we will hold off on them.
+- These values passed as input into the composite action will **not** be carried over as input into the individual steps the composite action runs.
+
+### Defaults - Not being considered at this time
+
+- In actions, we have the idea of [defaults](https://docs.github.com/en/actions/reference/workflow-syntax-for-github-actions#defaultsrun) , which allow you to specify a shell and working directory in one location, rather then on each step.
+- However, `shell` is currently required in composite run steps
+  - In regular run steps, it is optional, and defaults to a different value based on the OS.
+- We want to prioritize the right experience for the consumer, and make the action author continue to explicitly set these values. We can consider improving this experience in the future.
+
+## Consequences
+
+- Workflows are now more reusable across multiple workflow files
+- Composite actions implement most of the existing workflow run steps, with room to expand these in the future
+- Feature flags will control this rollout

docs/adrs/1438-conditional-composite.md

@@ -0,0 +1,71 @@
+# ADR 1438: Support Conditionals In Composite Actions
+
+**Date**: 2021-10-13
+
+**Status**: Accepted
+
+## Context
+
+We recently shipped composite actions, which allows you to reuse individual steps inside an action. 
+However, one of the [most requested features](https://github.com/actions/runner/issues/834) has been a way to support the `if` keyword.
+
+### Goals
+- We want to keep consistent with current behavior
+- We want to support conditionals via the `if` keyword
+- Our built in functions like `success` should be implementable without calling them, for example you can do `job.status == success` rather then `success()` currently.
+
+### How does composite currently work?
+
+Currently, we have limited conditional support in composite actions for `pre` and `post` steps. 
+These are based on the `job status`, and support keywords like `always()`, `failed()`, `success()` and `cancelled()`. 
+However, generic or main steps do **not** support conditionals.
+
+By default, in a regular workflow, a step runs on the `success()` condition. Which looks at the **job** **status**, sees if it is successful and runs.
+
+By default, in a composite action, main steps run until a single step fails in that composite action, then the composite action is halted early. It does **not** care about the job status.
+Pre, and post steps in composite actions use the job status to determine if they should run.
+
+### How do we go forward?
+
+Well, if we think about what composite actions are currently doing when invoking main steps, they are checking if the current composite action is successful. 
+Lets formalize that concept into a "real" idea.
+
+- We will add an `action_status` field to the github context to mimic the [job's context status](https://docs.github.com/en/actions/learn-github-actions/contexts#job-context).
+  - We have an existing concept that does this `action_path` which is only set for composite actions on the github context.
+- In a composite action during a main step, the `success()` function will check if `action_status == success`, rather then `job_status == success`. Failure will work the same way. 
+  - Pre and post steps in composite actions will not change, they will continue to check the job status.
+
+
+### Nested Scenario
+For nested composite actions, we will follow the existing behavior, you only care about your current composite action, not any parents. 
+For example, lets imagine a scenario with a simple nested composite action
+
+```
+- Job
+  - Regular Step
+  - Composite Action
+    - runs: exit 1
+    - if: always()
+      uses: A child composite action
+        - if: success()
+          runs: echo "this should print"
+        - runs: echo "this should also print"
+    - if: success()
+      runs: echo "this will not print as the current composite action has failed already"
+      
+```
+The child composite actions steps should run in this example, the child composite action has not yet failed, so it should run all steps until a step fails. This is consistent with how a composite action currently works in production if the main job fails but a composite action is invoked with `if:always()` or `if: failure()`
+
+### Other options explored
+We could add the `current_step_status` to the job context rather then `__status` to the steps context, however this comes with two major downsides:
+- We need to support the field for every type of step, because its non trivial to remove a field from the job context once it has been added (its readonly)
+  - For all actions besides composite it would only every be `success`
+  - Its weird to have a `current_step` value on the job context
+- We also explored a `__status` on the steps context.
+  - The `__` is required to prevent us from colliding with a step with id: status
+  - This felt wrong because the naming was not smooth, and did not fit into current conventions.
+
+### Consequences
+- github context has a new field for the status of the current composite action.
+- We support conditional's in composite actions
+- We keep the existing behavior for all users, but allow them to expand that functionality.

docs/adrs/README.md

@@ -0,0 +1,19 @@
+# ADRs
+
+ADR, short for "Architecture Decision Record" is a way of capturing important architectural decisions, along with their context and consequences.
+
+This folder includes ADRs for the actions runner. ADRs are proposed in the form of a pull request, and they commonly follow this format:
+
+* **Title**: short present tense imperative phrase, less than 50 characters, like a git commit message.
+
+* **Status**: proposed, accepted, rejected, deprecated, superseded, etc.
+
+* **Context**: what is the issue that we're seeing that is motivating this decision or change.
+
+* **Decision**: what is the change that we're actually proposing or doing.
+
+* **Consequences**: what becomes easier or more difficult to do because of this change.
+
+---
+
+- More information about ADRs can be found [here](https://github.com/joelparkerhenderson/architecture_decision_record).

docs/automate.md

@@ -0,0 +1,78 @@
+# Automate Configuring Self-Hosted Runners
+
+
+## Export PAT
+
+Before running any of these sample scripts, create a GitHub PAT and export it before running the script
+
+```bash
+export RUNNER_CFG_PAT=yourPAT
+```
+
+## Create running as a service
+
+**Scenario**: Run on a machine or VM ([not container](#why-cant-i-use-a-container)) which automates:
+
+ - Resolving latest released runner
+ - Download and extract latest
+ - Acquire a registration token
+ - Configure the runner
+ - Run as a systemd (linux) or Launchd (osx) service
+
+:point_right: [Sample script here](../scripts/create-latest-svc.sh) :point_left:
+
+Run as a one-liner. NOTE: replace with yourorg/yourrepo (repo level) or just yourorg (org level)
+```bash
+curl -s https://raw.githubusercontent.com/actions/runner/main/scripts/create-latest-svc.sh | bash -s yourorg/yourrepo
+```
+
+You can call the script with additional arguments:
+```bash
+#   Usage:
+#       export RUNNER_CFG_PAT=<yourPAT>
+#       ./create-latest-svc -s scope -g [ghe_domain] -n [name] -u [user] -l [labels]
+#       -s          required  scope: repo (:owner/:repo) or org (:organization)
+#       -g          optional  ghe_hostname: the fully qualified domain name of your GitHub Enterprise Server deployment
+#       -n          optional  name of the runner, defaults to hostname
+#       -u          optional  user svc will run as, defaults to current
+#       -l          optional  list of labels (split by comma) applied on the runner"
+```
+
+Use `--` to pass any number of optional named parameters:
+
+```
+curl -s https://raw.githubusercontent.com/actions/runner/main/scripts/create-latest-svc.sh | bash -s -- -s myorg/myrepo -n myname -l label1,label2
+```
+### Why can't I use a container?
+
+The runner is installed as a service using `systemd` and `systemctl`. Docker does not support `systemd` for service configuration on a container.
+
+## Uninstall running as service
+
+**Scenario**: Run on a machine or VM ([not container](#why-cant-i-use-a-container)) which automates:
+
+ - Stops and uninstalls the systemd (linux) or Launchd (osx) service
+ - Acquires a removal token
+ - Removes the runner
+
+:point_right: [Sample script here](../scripts/remove-svc.sh) :point_left:
+
+Repo level one liner.  NOTE: replace with yourorg/yourrepo (repo level) or just yourorg (org level)
+```bash
+curl -s https://raw.githubusercontent.com/actions/runner/main/scripts/remove-svc.sh | bash -s yourorg/yourrepo
+```
+
+### Delete an offline runner
+
+**Scenario**: Deletes a registered runner that is offline:
+
+ - Ensures the runner is offline
+ - Resolves id from name
+ - Deletes the runner
+
+:point_right: [Sample script here](../scripts/delete.sh) :point_left:
+
+Repo level one-liner.  NOTE: replace with yourorg/yourrepo (repo level) or just yourorg (org level) and replace runnername
+```bash
+curl -s https://raw.githubusercontent.com/actions/runner/main/scripts/delete.sh | bash -s yourorg/yourrepo runnername
+```

docs/checks/actions.md

@@ -0,0 +1,45 @@
+
+# Actions Connection Check
+
+## What is this check for?
+
+Make sure the runner has access to actions service for GitHub.com or GitHub Enterprise Server
+
+- For GitHub.com
+  - The runner needs to access https://api.github.com for downloading actions.
+  - The runner needs to access https://vstoken.actions.githubusercontent.com/_apis/.../ for requesting an access token.
+  - The runner needs to access https://pipelines.actions.githubusercontent.com/_apis/.../ for receiving workflow jobs.
+- For GitHub Enterprise Server
+  - The runner needs to access https://myGHES.com/api/v3 for downloading actions.
+  - The runner needs to access https://myGHES.com/_services/vstoken/_apis/.../ for requesting an access token.
+  - The runner needs to access https://myGHES.com/_services/pipelines/_apis/.../ for receiving workflow jobs.
+
+## What is checked?
+
+- DNS lookup for api.github.com or myGHES.com using dotnet
+- Ping api.github.com or myGHES.com using dotnet
+- Make HTTP GET to https://api.github.com or https://myGHES.com/api/v3 using dotnet, check response headers contains `X-GitHub-Request-Id`
+---
+- DNS lookup for vstoken.actions.githubusercontent.com using dotnet
+- Ping vstoken.actions.githubusercontent.com using dotnet
+- Make HTTP GET to https://vstoken.actions.githubusercontent.com/_apis/health or https://myGHES.com/_services/vstoken/_apis/health using dotnet, check response headers contains `x-vss-e2eid`
+---
+- DNS lookup for pipelines.actions.githubusercontent.com using dotnet
+- Ping pipelines.actions.githubusercontent.com using dotnet
+- Make HTTP GET to https://pipelines.actions.githubusercontent.com/_apis/health or https://myGHES.com/_services/pipelines/_apis/health using dotnet, check response headers contains `x-vss-e2eid`
+- Make HTTP POST to https://pipelines.actions.githubusercontent.com/_apis/health or https://myGHES.com/_services/pipelines/_apis/health using dotnet, check response headers contains `x-vss-e2eid`
+
+## How to fix the issue?
+
+### 1. Check the common network issue
+  
+  > Please check the [network doc](./network.md)
+
+### 2. SSL certificate related issue
+
+  If you are seeing `System.Net.Http.HttpRequestException: The SSL connection could not be established, see inner exception.` in the log, it means the runner can't connect to Actions service due to SSL handshake failure.
+  > Please check the [SSL cert doc](./sslcert.md)
+  
+## Still not working?
+
+Contact GitHub customer service or log an issue at https://github.com/actions/runner if you think it's a runner issue.

docs/checks/git.md

@@ -0,0 +1,34 @@
+# Git Connection Check
+
+## What is this check for?
+
+Make sure `git` can access GitHub.com or your GitHub Enterprise Server.
+
+
+## What is checked?
+
+The test is done by executing
+```bash
+# For GitHub.com
+git ls-remote --exit-code https://github.com/actions/checkout HEAD
+
+# For GitHub Enterprise Server
+git ls-remote --exit-code https://ghes.me/actions/checkout HEAD
+```
+
+The test also set environment variable `GIT_TRACE=1` and `GIT_CURL_VERBOSE=1` before running `git ls-remote`, this will make `git` to produce debug log for better debug any potential issues.
+
+## How to fix the issue?
+
+### 1. Check the common network issue
+  
+  > Please check the [network doc](./network.md)
+
+### 2. SSL certificate related issue
+
+  If you are seeing `SSL Certificate problem:` in the log, it means the `git` can't connect to the GitHub server due to SSL handshake failure.
+  > Please check the [SSL cert doc](./sslcert.md)
+  
+## Still not working?
+
+Contact GitHub customer service or log an issue at https://github.com/actions/runner if you think it's a runner issue.

docs/checks/internet.md

@@ -0,0 +1,26 @@
+# Internet Connection Check
+
+## What is this check for?
+
+Make sure the runner has access to https://api.github.com
+
+The runner needs to access https://api.github.com to download any actions from the marketplace.
+
+Even the runner is configured to GitHub Enterprise Server, the runner can still download actions from GitHub.com with [GitHub Connect](https://docs.github.com/en/enterprise-server@2.22/admin/github-actions/enabling-automatic-access-to-githubcom-actions-using-github-connect)
+
+
+## What is checked?
+
+- DNS lookup for api.github.com using dotnet
+- Ping api.github.com using dotnet
+- Make HTTP GET to https://api.github.com using dotnet, check response headers contains `X-GitHub-Request-Id`
+
+## How to fix the issue?
+
+### 1. Check the common network issue
+  
+  > Please check the [network doc](./network.md)
+
+## Still not working?
+
+Contact GitHub customer service or log an issue at https://github.com/actions/runner if you think it's a runner issue.

docs/checks/network.md

@@ -0,0 +1,62 @@
+## Common Network Related Issues
+
+### Common things that can cause the runner to not working properly
+
+- A bug in the runner or the dotnet framework that causes the actions runner to be unable to make Http requests in a certain network environment.
+
+- A Proxy or Firewall may block certain HTTP method, such as blocking all POST and PUT calls which the runner will use to upload logs.
+
+- A Proxy or Firewall may only allows requests with certain user-agent to pass through and the actions runner user-agent is not in the allow list.
+
+- A Proxy try to decrypt and exam HTTPS traffic for security purpose but cause the actions-runner to fail to finish SSL handshake due to the lack of trusting proxy's CA.
+
+- The SSL handshake may fail if the client and server do not support the same TLS version, or the same cipher suites.
+
+- A Proxy may try to modify the HTTPS request (like add or change some http headers) and causes the request become incompatible with the Actions Service (ASP.NetCore), Ex: [Nginx](https://github.com/dotnet/aspnetcore/issues/17081)
+
+- Firewall rules that block action runner from accessing certain hosts, ex: `*.github.com`, `*.actions.githubusercontent.com`, etc
+
+
+### Identify and solve these problems
+
+The key is to figure out where is the problem, the network environment, or the actions runner?
+
+Use a 3rd party tool to make the same requests as the runner did would be a good start point.
+
+- Use `nslookup` to check DNS
+- Use `ping` to check Ping
+- Use `traceroute`, `tracepath`, or `tracert` to check the network route between the runner and the Actions service
+- Use `curl -v` to check the network stack, good for verifying default certificate/proxy settings.
+- Use `Invoke-WebRequest` from `pwsh` (`PowerShell Core`) to check the dotnet network stack, good for verifying bugs in the dotnet framework.
+
+If the 3rd party tool is also experiencing the same error as the runner does, then you might want to contact your network administrator for help.
+
+Otherwise, contact GitHub customer support or log an issue at https://github.com/actions/runner
+
+### Troubleshooting: Why can't I configure a runner?
+
+If you are having trouble connecting, try these steps:
+
+1. Validate you can reach our endpoints from your web browser. If not, double check your local network connection
+    - For hosted Github:
+      - https://api.github.com/
+      - https://vstoken.actions.githubusercontent.com/_apis/health
+      - https://pipelines.actions.githubusercontent.com/_apis/health
+    - For GHES/GHAE
+      - https://myGHES.com/_services/vstoken/_apis/health
+      - https://myGHES.com/_services/pipelines/_apis/health
+      - https://myGHES.com/api/v3
+2. Validate you can reach those endpoints in powershell core
+    - The runner runs on .net core, lets validate the local settings for that stack
+    - Open up `pwsh`
+    - Run the command using the urls above `Invoke-WebRequest {url}`
+3. If not, get a packet trace using a tool like wireshark and start looking at the TLS handshake.
+    - If you see a Client Hello followed by a Server RST:
+      - You may need to configure your TLS settings to use the correct version
+        - You should support TLS version 1.2 or later
+      - You may need to configure your TLS settings to have up to date cipher suites, this may be solved by system updates and patches.
+        - Most notably, on windows server 2012 make sure [the tls cipher suite update](https://support.microsoft.com/en-us/topic/update-adds-new-tls-cipher-suites-and-changes-cipher-suite-priorities-in-windows-8-1-and-windows-server-2012-r2-8e395e43-c8ef-27d8-b60c-0fc57d526d94) is installed
+      - Your firewall, proxy or network configuration may be blocking the connection
+      - You will want to reach out to whoever is in charge of your network with these pcap files to further troubleshoot
+    - If you see a failure later in the handshake:
+      - Try the fix in the [SSLCert Fix](./sslcert.md)

docs/checks/nodejs.md

@@ -0,0 +1,30 @@
+# Node.js Connection Check
+
+## What is this check for?
+
+Make sure the built-in node.js has access to GitHub.com or GitHub Enterprise Server.
+
+The runner carries it's own copy of node.js executable under `<runner_root>/externals/node12/`.
+
+All javascript base Actions will get executed by the built-in `node` at `<runner_root>/externals/node12/`.
+
+> Not the `node` from `$PATH`
+
+## What is checked?
+
+- Make HTTPS GET to https://api.github.com or https://myGHES.com/api/v3 using node.js, make sure it gets 200 response code.
+
+## How to fix the issue?
+
+### 1. Check the common network issue
+  
+  > Please check the [network doc](./network.md)
+
+### 2. SSL certificate related issue
+
+  If you are seeing `Https request failed due to SSL cert issue` in the log, it means the `node.js` can't connect to the GitHub server due to SSL handshake failure.
+  > Please check the [SSL cert doc](./sslcert.md)
+  
+## Still not working?
+
+Contact GitHub customer service or log an issue at https://github.com/actions/runner if you think it's a runner issue.

docs/checks/sslcert.md

@@ -0,0 +1,89 @@
+## SSL Certificate Related Issues
+
+You might run into an SSL certificate error when your GitHub Enterprise Server is using a self-signed SSL server certificate or a web proxy within your network is decrypting HTTPS traffic for a security audit.
+
+As long as your certificate is generated properly, most of the issues should be fixed after your trust the certificate properly on the runner machine.
+
+> Different OS might have extra requirements on SSL certificate,
+> Ex: macOS requires `ExtendedKeyUsage` https://support.apple.com/en-us/HT210176
+
+### Don't skip SSL cert validation
+
+> !!! DO NOT SKIP SSL CERT VALIDATION !!!  
+> !!! IT IS A BAD SECURITY PRACTICE !!!  
+
+### Download SSL certificate chain
+
+Depends on how your SSL server certificate gets configured, you might need to download the whole certificate chain from a machine that has trusted the SSL certificate's CA.
+
+- Approach 1: Download certificate chain using a browser (Chrome, Firefox, IT), you can google for more example, [here is what I found](https://medium.com/@menakajain/export-download-ssl-certificate-from-server-site-url-bcfc41ea46a2)
+
+- Approach 2: Download certificate chain using OpenSSL, you can google for more example, [here is what I found](https://superuser.com/a/176721)
+
+- Approach 3: Ask your network administrator or the owner of the CA certificate to send you a copy of it
+
+### Trust CA certificate for the Runner
+
+The actions runner is a dotnet core application which will follow how dotnet load SSL CA certificates on each OS.
+
+You can get full details documentation at [here](https://docs.microsoft.com/en-us/dotnet/standard/security/cross-platform-cryptography#x509store)
+
+In short:
+- Windows: Load from Windows certificate store.
+- Linux: Load from OpenSSL CA cert bundle.
+- macOS: Load from macOS KeyChain.
+
+To let the runner trusts your CA certificate, you will need to:
+1. Save your SSL certificate chain which includes the root CA and all intermediate CAs into a `.pem` file.
+2. Use `OpenSSL` to convert `.pem` file to a proper format for different OS, here is some [doc with sample commands](https://www.sslshopper.com/ssl-converter.html)
+3. Trust CA on different OS:
+    - Windows: https://docs.microsoft.com/en-us/skype-sdk/sdn/articles/installing-the-trusted-root-certificate
+    - macOS: ![trust ca cert](./../res/macOStrustCA.gif)
+    - Linux: Refer to the distribution documentation
+      1. RedHat: https://www.redhat.com/sysadmin/ca-certificates-cli
+      2. Ubuntu: http://manpages.ubuntu.com/manpages/focal/man8/update-ca-certificates.8.html
+      3. Google search: "trust ca certificate on [linux distribution]"
+      4. If all approaches failed, set environment variable `SSL_CERT_FILE` to the CA bundle `.pem` file we get.
+    > To verify cert gets installed properly on Linux, you can try use `curl -v https://sitewithsslissue.com` and `pwsh -Command \"Invoke-WebRequest -Uri https://sitewithsslissue.com\"`
+
+### Trust CA certificate for Git CLI
+
+Git uses various CA bundle file depends on your operation system.
+- Git packaged the CA bundle file within the Git installation on Windows
+- Git use OpenSSL certificate CA bundle file on Linux and macOS
+
+You can check where Git check CA file by running:
+```bash
+export GIT_CURL_VERBOSE=1
+git ls-remote https://github.com/actions/runner HEAD
+```
+
+You should see something like:
+```
+* Couldn't find host github.com in the .netrc file; using defaults
+*   Trying 140.82.114.4...
+* TCP_NODELAY set
+* Connected to github.com (140.82.114.4) port 443 (#0)
+* ALPN, offering h2
+* ALPN, offering http/1.1
+* successfully set certificate verify locations:
+*   CAfile: /etc/ssl/cert.pem
+  CApath: none
+* SSL connection using TLSv1.2 / ECDHE-RSA-AES128-GCM-SHA256
+```
+This tells me `/etc/ssl/cert.pem` is where it read trusted CA certificates.
+
+To let Git trusts your CA certificate, you will need to:
+1. Save your SSL certificate chain which includes the root CA and all intermediate CAs into a `.pem` file.
+2. Set `http.sslCAInfo` Git config or `GIT_SSL_CAINFO` environment variable to the full path of the `.pem` file [Git Doc](https://git-scm.com/docs/git-config#Documentation/git-config.txt-httpsslCAInfo)
+> I would recommend using `http.sslCAInfo` since it can be scope to certain hosts that need the extra trusted CA.  
+> Ex: `git config --global http.https://myghes.com/.sslCAInfo /extra/ca/cert.pem`  
+> This will make Git use the `/extra/ca/cert.pem` only when communicates with `https://myghes.com` and keep using the default CA bundle with others.
+
+### Trust CA certificate for Node.js
+
+Node.js has compiled a snapshot of the Mozilla CA store that is fixed at each version of Node.js' release time.
+
+To let Node.js trusts your CA certificate, you will need to:
+1. Save your SSL certificate chain which includes the root CA and all intermediate CAs into a `.pem` file.
+2. Set environment variable `NODE_EXTRA_CA_CERTS` which point to the file. ex: `export NODE_EXTRA_CA_CERTS=/full/path/to/cacert.pem` or `set NODE_EXTRA_CA_CERTS=C:\full\path\to\cacert.pem`

docs/contribute.md

@@ -1,10 +1,54 @@
-# Contribution guide for developers
+# Contributions
+
+We welcome contributions in the form of issues and pull requests.  We view the contributions and the process as the same for github and external contributors.
+
+> IMPORTANT: Building your own runner is critical for the dev inner loop process when contributing changes.  However, only runners built and distributed by GitHub (releases) are supported in production.  Be aware that workflows and orchestrations run service side with the runner being a remote process to run steps.  For that reason, the service can pull the runner forward so customizations can be lost.
+
+## Issues
+
+Log issues for both bugs and enhancement requests.  Logging issues are important for the open community.
+
+Issues in this repository should be for the runner application.  Note that the VM and virtual machine images (including the developer toolsets) installed on the actions hosted machine pools are located [in this repository](https://github.com/actions/virtual-environments)
+
+## Enhancements and Feature Requests
+
+We ask that before significant effort is put into code changes, that we have agreement on taking the change before time is invested in code changes.
+
+1. Create a feature request.  Once agreed we will take the enhancement
+2. Create an ADR to agree on the details of the change.
+
+An ADR is an Architectural Decision Record.  This allows consensus on the direction forward and also serves as a record of the change and motivation.  [Read more here](adrs/README.md)
 
 ## Required Dev Dependencies
 
-![Win](res/win_sm.png) Git for Windows [Install Here](https://git-scm.com/downloads) (needed for dev sh script)
+![Win](res/win_sm.png) ![*nix](res/linux_sm.png)  Git for Windows and Linux [Install Here](https://git-scm.com/downloads) (needed for dev sh script)
 
-## To Build, Test, Layout 
+## Quickstart: Run a job from a real repository
+
+If you just want to get from building the sourcecode to using it to execute an action, you will need:
+
+- The url of your repository
+- A runner registration token. You can find it at `https://github.com/{your-repo}/settings/actions/runners/new`
+
+
+```bash
+git clone https://github.com/actions/runner
+cd runner/src
+./dev.(sh/cmd) layout # the runner that built from source is in {root}/_layout
+cd ../_layout
+./config.(sh/cmd) --url https://github.com/{your-repo} --token ABCABCABCABCABCABCABCABCABCAB # accept default name, labels and work folder
+./run.(sh/cmd)
+```
+
+If you trigger a job now, you can see the runner execute it.
+
+Tip: Make sure your job can run on this runner. The easiest way is to set `runs-on: self-hosted` in the workflow file.
+
+
+## Development Life Cycle
+If you're using VS Code, you can follow [these](contribute/vscode.md) steps instead.
+
+### To Build, Test, Layout
 
 Navigate to the `src` directory and run the following command:
 
@@ -14,25 +58,95 @@ Navigate to the `src` directory and run the following command:
   
 **Commands:**  
 
-* `layout` (`l`):  Run first time to create a full agent layout in `{root}/_layout`
-* `build` (`b`):   Build everything and update agent layout folder
-* `test` (`t`):    Build agent binaries and run unit tests
+* `layout` (`l`):  Run first time to create a full runner layout in `{root}/_layout`
+* `build` (`b`):   Build everything and update runner layout folder
+* `test` (`t`):    Build runner binaries and run unit tests
 
-Sample developer flow:
+### Sample developer flow:
 
 ```bash
 git clone https://github.com/actions/runner
+cd runner
 cd ./src
-./dev.(sh/cmd) layout # the agent that build from source is in {root}/_layout
+./dev.(sh/cmd) layout # the runner that built from source is in {root}/_layout
 <make code changes>
 ./dev.(sh/cmd) build # {root}/_layout will get updated
 ./dev.(sh/cmd) test # run all unit tests before git commit/push
 ```
 
+Let's break that down.
+
+### Clone repository:
+
+```bash
+git clone https://github.com/actions/runner
+cd runner
+```
+If you want to push your changes to a remote, it is recommended you fork the repository and use that fork as your origin instead of `https://github.com/actions/runner`.
+
+
+### Build Layout:
+
+This command will build all projects, then copies them and other dependencies into a folder called `_layout`. The binaries in this folder are then used for running, debugging the runner.
+
+```bash
+cd ./src # execute the script from this folder
+./dev.(sh/cmd) layout # the runner that built from source is in {root}/_layout
+```
+
+If you make code changes after this point, use the argument `build` to build your code in the `src` folder to keep your `_layout` folder up to date.
+
+```bash
+cd ./src
+./dev.(sh/cmd) build # {root}/_layout will get updated
+```
+### Test Layout:
+
+This command runs the suite of unit tests in the project
+
+```bash
+cd ./src
+./dev.(sh/cmd) test # run all unit tests before git commit/push
+```
+
+### Configure Runner:
+
+If you want to manually test your runner and run actions from a real repository, you'll have to configure it before running it.
+
+```bash
+cd runner/_layout
+./config.(sh/cmd) # configure your custom runner
+```
+
+You will need your the name of your repository and a runner registration token.
+Check [Quickstart](##Quickstart:-Run-a-job-from-a-real-repository) if you don't know how to get this token.
+
+These can also be passed down as arguments to `config.(sh/cmd)`:
+```bash
+cd runner/_layout
+./config.(sh/cmd) --url https://github.com/{your-repo} --token ABCABCABCABCABCABCABCABCABCAB
+```
+
+### Run Runner
+
+All that's left to do is to start the runner:
+```bash
+cd runner/_layout
+./run.(sh/cmd) # run your custom runner
+```
+
+### View logs:
+
+```bash
+cd runner/_layout/_diag
+ls
+cat (Runner/Worker)_TIMESTAMP.log # view your log file
+```
+
 ## Editors
 
-[Using Visual Studio 2019](https://www.visualstudio.com/vs/)  
 [Using Visual Studio Code](https://code.visualstudio.com/)
+[Using Visual Studio](https://code.visualstudio.com/docs)  
 
 ## Styling
 

docs/contribute/vscode.md

@@ -0,0 +1,52 @@
+# Development Life Cycle using VS Code:
+
+These examples use VS Code, but the idea should be similar across all IDEs as long as you attach to the same processes in the right folder.
+## Configure
+
+To successfully start the runner, you need to register it using a repository and a runner registration token.
+Run `Configure` first to build the source code and set up the runner in `_layout`.
+Once it's done creating `_layout`, it asks for the url of your repository and your token in the terminal.
+
+Check [Quickstart](../contribute.md#quickstart-run-a-job-from-a-real-repository) if you don't know how to get this token.
+
+## Debugging
+
+Debugging the full lifecycle of a job can be tricky, because there are multiple processes involved.
+All the configs below can be found in `.vscode/launch.json`.
+
+## Debug the Listener
+
+```json
+{
+    "name": "Run [build]",
+    "type": "coreclr",
+    "request": "launch",
+    "preLaunchTask": "build runner layout",  // use the config called "Run" to launch without rebuild
+    "program": "${workspaceFolder}/_layout/bin/Runner.Listener",
+    "args": [
+        "run" // run without args to print usage
+    ],
+    "cwd": "${workspaceFolder}/src",
+    "console": "integratedTerminal",
+    "requireExactSource": false,
+}
+```
+
+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.
+Instead, a parallel debugging session has to be started, using a different launch config.
+Luckily, VS Code supports multiple parallel debugging sessions.
+
+## Debug the Worker
+
+Because the worker process is usually started by the listener instead of an IDE, debugging it from start to finish can be tricky.
+For this reason, `Runner.Worker` can be configured to wait for a debugger to be attached before it begins any actual work.
+
+Set the environment variable `GITHUB_ACTIONS_RUNNER_ATTACH_DEBUGGER` to `true` or `1` to enable this wait.
+All worker processes now will wait 20 seconds before they start working on their task.
+
+This gives enough time to attach a debugger by running `Debug Worker`.
+If for some reason you have multiple workers running, run the launch config `Attach` instead.
+Select `Runner.Worker` from the running processes when VS Code prompts for it.

docs/design/auth.md

@@ -0,0 +1,61 @@
+# Runner Authentication and Authorization
+
+## Goals
+  - Support runner installs in untrusted domains.
+  - The account that configures or runs the runner process is not relevant for accessing GitHub resources.
+  - Accessing GitHub resources is done with a per-job token which expires when job completes.
+  - The token is granted to trusted parts of the system including the runner, actions and script steps specified by the workflow author as trusted.
+  - All OAuth tokens that come from the Token Service that the runner uses to access Actions Service resources are the same. It's just the scope and expiration of the token that may vary.
+
+## Configuration
+
+Configuring a self-hosted runner is [covered here in the documentation](https://help.github.com/en/actions/hosting-your-own-runners/adding-self-hosted-runners).
+
+Configuration is done with the user being authenticated via a time-limited, GitHub runner registration token.
+
+*Your credentials are never used for registering the runner with the service.*
+
+![Self-hosted runner config](../res/self-hosted-config.png)
+
+During configuration, an RSA public/private key pair is created, the private key is stored in file on disk. On Windows, the content is protected with DPAPI (machine level encrypted - runner only valid on that machine) and on Linux/OSX with `chmod` permissions.
+
+Using your credentials, the runner is registered with the service by sending the public key to the service which adds that runner to the pool and stores the public key, the Token Service will generate a `clientId` associated with the public key.
+
+## Start and Listen
+
+After configuring the runner, the runner can be started interactively (`./run.cmd` or `./run.sh`) or as a service.
+
+![Self-hosted runner start](../res/self-hosted-start.png)
+
+On start, the runner listener process loads the RSA private key (on Windows decrypting with machine key DPAPI), and asks the Token Service for an OAuth token which is signed with the RSA private key.
+The server then responds with an OAuth token that grants permission to access the message queue (HTTP long poll), allowing the runner to acquire the messages it will eventually run.
+
+## Run a workflow
+
+When a workflow is run, its labels are evaluated, it is matched to a runner and a message is placed in a queue of messages for that runner.  
+The runner then starts listening for jobs via the message queue HTTP long poll.  
+The message is encrypted with the runner's public key, stored during runner configuration.  
+
+![Runner workflow run](../res/workflow-run.png)
+
+A workflow is queued as a result of a triggered [event](https://help.github.com/en/actions/reference/events-that-trigger-workflows). Workflows can be scheduled to [run at specific UTC times](https://help.github.com/en/actions/reference/events-that-trigger-workflows#scheduled-events-schedule) using POSIX `cron` syntax.
+An [OAuth token](http://self-issued.info/docs/draft-ietf-oauth-json-web-token.html) is generated, granting limited access to the host in Actions Service associated with the github.com repository/organization.
+The lifetime of the OAuth token is the lifetime of the run or at most the [job timeout (default: 6 hours)](https://help.github.com/en/actions/reference/workflow-syntax-for-github-actions#jobsjob_idtimeout-minutes), plus 10 additional minutes.
+
+## Accessing GitHub resources
+
+The job message sent to the runner contains the OAuth token to talk back to the Actions Service.
+The runner listener parent process will spawn a runner worker process for that job and send it the job message over IPC.
+The token is never persisted.
+
+Each action is run as a unique subprocess.
+The encrypted access token will be provided as an environment variable in each action subprocess.  
+The token is registered with the runner as a secret and scrubbed from the logs as they are written.
+
+Authentication in a workflow run to github.com can be accomplished by using the [`GITHUB_TOKEN`](https://help.github.com/en/actions/configuring-and-managing-workflows/authenticating-with-the-github_token#about-the-github_token-secret)) secret. This token expires after 60 minutes. Please note that this token is different from the OAuth token that the runner uses to talk to the Actions Service.
+
+## Hosted runner authentication
+
+Hosted runner authentication differs from self-hosted authentication in that runners do not undergo a registration process, but instead, the hosted runners get the OAuth token directly by reading the `.credentials` file. The scope of this particular token is limited for a given workflow job execution, and the token is revoked as soon as the job is finished.
+
+![Hosted runner config and start](../res/hosted-config-start.png)

docs/res/runner-auth-diags.txt

@@ -0,0 +1,52 @@
+# Markup used to generate the runner auth diagrams: https://websequencediagrams.com
+
+title Runner Configuration (self-hosted only)
+
+note left of Runner: GitHub repo URL as input
+Runner->github.com: Retrieve Actions Service access using runner registration token
+github.com->Runner: Access token for Actions Service
+note left of Runner: Generate RSA key pair
+note left of Runner: Store encrypted RSA private key on disk
+Runner->Actions Service: Register runner using Actions Service access token
+note right of Runner: Runner name, RSA public key sent
+note right of Actions Service: Public key stored
+Actions Service->Token Service: Register runner as an app along with the RSA public key
+note right of Token Service: Public key stored
+Token Service->Actions Service: Client Id for the runner application
+Actions Service->Runner: Client Id and Token Endpoint URL
+note left of Runner: Store runner configuration info into .runner file
+note left of Runner: Store Token registration info into .credentials file
+
+title Runner Start and Running (self-hosted only)
+
+Runner.Listener->Runner.Listener: Start
+note left of Runner.Listener: Load config info from .runner
+note left of Runner.Listener: Load token registration from .credentials
+Runner.Listener->Token Service: Exchange OAuth token (happens every 50 mins)
+note right of Runner.Listener: Construct JWT token, use Client Id signed by RSA private key
+note left of Actions Service: Find corresponding RSA public key, use Client Id\nVerify JWT token's signature
+Token Service->Runner.Listener: OAuth token with limited permission and valid for 50 mins
+Runner.Listener->Actions Service: Connect to Actions Service with OAuth token
+Actions Service->Runner.Listener: Workflow job
+
+title Running workflow
+
+Runner.Listener->Service (Message Queue): Get message
+note right of Runner.Listener: Authenticate with exchanged OAuth token
+Event->Actions Service: Queue workflow
+Actions Service->Actions Service: Generate OAuth token per job
+Actions Service->Actions Service: Build job message with the OAuth token
+Actions Service->Actions Service: Encrypt job message with the target runner's public key
+Actions Service->Service (Message Queue): Send encrypted job message to runner
+Service (Message Queue)->Runner.Listener: Send job
+note right of Runner.Listener: Decrypt message with runner's private key
+Runner.Listener->Runner.Worker: Create worker process per job and run the job
+
+title Runner Configuration, Start and Running (hosted only)
+
+Machine Management Service->Runner.Listener: Construct .runner configuration file, store token in .credentials
+Runner.Listener->Runner.Listener: Start
+note left of Runner.Listener: Load config info from .runner
+note left of Runner.Listener: Load OAuth token from .credentials
+Runner.Listener->Actions Service: Connect to Actions Service with OAuth token in .credentials
+Actions Service->Runner.Listener: Workflow job

docs/start/envlinux.md

@@ -28,7 +28,7 @@ Execute ./bin/installdependencies.sh to install any missing Dotnet Core 3.0 depe
 ```
 You can easily correct the problem by executing `./bin/installdependencies.sh`.  
 The `installdependencies.sh` script should install all required dependencies on all supported Linux versions  
-> Note: The `installdependencies.sh` script will try to use the default package management mechanism on your Linux flavor (ex. `yum`/`apt-get`/`apt`). You might need to deal with error coming from the package management mechanism related to your setup, like [#1353](https://github.com/Microsoft/vsts-agent/issues/1353)
+> Note: The `installdependencies.sh` script will try to use the default package management mechanism on your Linux flavor (ex. `yum`/`apt-get`/`apt`).
 
 ### Full dependencies list
 
@@ -40,7 +40,7 @@ Debian based OS (Debian, Ubuntu, Linux Mint)
 - libssl1.1, libssl1.0.2 or libssl1.0.0
 - libicu63, libicu60, libicu57 or libicu55
 
-Fedora based OS (Fedora, Redhat, Centos, Oracle Linux 7)
+Fedora based OS (Fedora, Red Hat Enterprise Linux, CentOS, Oracle Linux 7)
 
 - lttng-ust
 - openssl-libs

docs/start/envosx.md

@@ -6,5 +6,11 @@
 
   - macOS High Sierra (10.13) and later versions
 
+## Apple Silicon M1
+
+The runner is currently not supported on devices with an Apple M1 chip.  
+We are waiting for official .NET support. You can read more here about the [current state of support here](https://github.com/orgs/dotnet/projects/18#card-56812463).
+Current .NET project board about M1 support:
+https://github.com/orgs/dotnet/projects/18#card-56812463
 
 ## [More .Net Core Prerequisites Information](https://docs.microsoft.com/en-us/dotnet/core/macos-prerequisites?tabs=netcore30)

docs/start/envwin.md

@@ -9,4 +9,4 @@
  - Windows Server 2016 64-bit
  - Windows Server 2019 64-bit
 
-## [More .Net Core Prerequisites Information](https://docs.microsoft.com/en-us/dotnet/core/windows-prerequisites?tabs=netcore30)
+## [More .NET Core Prerequisites Information](https://docs.microsoft.com/en-us/dotnet/core/windows-prerequisites?tabs=netcore30)

images/arm/Dockerfile

@@ -1,7 +0,0 @@
-FROM mcr.microsoft.com/dotnet/core/runtime-deps:2.1
-
-RUN apt-get update \
-    && apt-get install -y --no-install-recommends \
-        curl \
-        git \
-    && rm -rf /var/lib/apt/lists/*

images/centos6/Dockerfile

@@ -1,150 +0,0 @@
-FROM centos:6
-
-# Install dependencies
-
-RUN yum install -y \
-        centos-release-SCL \
-        epel-release \
-        wget \
-        unzip \
-    && \
-    rpm --import http://linuxsoft.cern.ch/cern/slc6X/x86_64/RPM-GPG-KEY-cern && \
-    wget -O /etc/yum.repos.d/slc6-devtoolset.repo http://linuxsoft.cern.ch/cern/devtoolset/slc6-devtoolset.repo && \
-    yum install -y \
-        "perl(Time::HiRes)" \
-        autoconf \
-        cmake \
-        cmake3 \
-        devtoolset-2-toolchain \
-        doxygen \
-        expat-devel \
-        gcc \
-        gcc-c++ \
-        gdb \
-        gettext-devel \
-        krb5-devel \
-        libedit-devel \
-        libidn-devel \
-        libmetalink-devel \
-        libnghttp2-devel \
-        libssh2-devel \
-        libunwind-devel \
-        libuuid-devel \
-        lttng-ust-devel \
-        lzma \
-        ncurses-devel \
-        openssl-devel \
-        perl-devel \
-        python-argparse \
-        python27 \
-        readline-devel \
-        swig \
-        xz \
-        zlib-devel \
-    && \
-    yum clean all
-
-# Build and install clang and lldb 3.9.1
-
-RUN wget ftp://sourceware.org/pub/binutils/snapshots/binutils-2.29.1.tar.xz && \
-    wget http://releases.llvm.org/3.9.1/cfe-3.9.1.src.tar.xz && \
-    wget http://releases.llvm.org/3.9.1/llvm-3.9.1.src.tar.xz && \
-    wget http://releases.llvm.org/3.9.1/lldb-3.9.1.src.tar.xz && \
-    wget http://releases.llvm.org/3.9.1/compiler-rt-3.9.1.src.tar.xz && \
-    \
-    tar -xf binutils-2.29.1.tar.xz && \
-    tar -xf llvm-3.9.1.src.tar.xz && \
-    mkdir llvm-3.9.1.src/tools/clang && \
-    mkdir llvm-3.9.1.src/tools/lldb && \
-    mkdir llvm-3.9.1.src/projects/compiler-rt && \
-    tar -xf cfe-3.9.1.src.tar.xz --strip 1 -C llvm-3.9.1.src/tools/clang && \
-    tar -xf lldb-3.9.1.src.tar.xz --strip 1 -C llvm-3.9.1.src/tools/lldb && \
-    tar -xf compiler-rt-3.9.1.src.tar.xz --strip 1 -C llvm-3.9.1.src/projects/compiler-rt && \
-    rm binutils-2.29.1.tar.xz && \
-    rm cfe-3.9.1.src.tar.xz && \
-    rm lldb-3.9.1.src.tar.xz && \
-    rm llvm-3.9.1.src.tar.xz && \
-    rm compiler-rt-3.9.1.src.tar.xz && \
-    \
-    mkdir llvmbuild && \
-    cd llvmbuild && \
-    scl enable python27 devtoolset-2 \
-    ' \
-        cmake3 \
-            -DCMAKE_CXX_COMPILER=/opt/rh/devtoolset-2/root/usr/bin/g++ \
-            -DCMAKE_C_COMPILER=/opt/rh/devtoolset-2/root/usr/bin/gcc \
-            -DCMAKE_LINKER=/opt/rh/devtoolset-2/root/usr/bin/ld \
-            -DCMAKE_BUILD_TYPE=Release \
-            -DLLVM_LIBDIR_SUFFIX=64 \
-            -DLLVM_ENABLE_EH=1 \
-            -DLLVM_ENABLE_RTTI=1 \
-            -DLLVM_BINUTILS_INCDIR=../binutils-2.29.1/include \
-            ../llvm-3.9.1.src \
-        && \
-        make -j $(($(getconf _NPROCESSORS_ONLN)+1)) && \
-        make install \
-    ' && \
-    cd .. && \
-    rm -r llvmbuild && \
-    rm -r llvm-3.9.1.src && \
-    rm -r binutils-2.29.1
-
-# Build and install curl 7.45.0
-
-RUN wget https://curl.haxx.se/download/curl-7.45.0.tar.lzma && \
-    tar -xf curl-7.45.0.tar.lzma && \
-    rm curl-7.45.0.tar.lzma && \
-    cd curl-7.45.0 && \
-    scl enable python27 devtoolset-2 \
-    ' \
-        ./configure \
-            --disable-dict \
-            --disable-ftp \
-            --disable-gopher \
-            --disable-imap \
-            --disable-ldap \
-            --disable-ldaps \
-            --disable-libcurl-option \
-            --disable-manual \
-            --disable-pop3 \
-            --disable-rtsp \
-            --disable-smb \
-            --disable-smtp \
-            --disable-telnet \
-            --disable-tftp \
-            --enable-ipv6 \
-            --enable-optimize \
-            --enable-symbol-hiding \
-            --with-ca-bundle=/etc/pki/tls/certs/ca-bundle.crt \
-            --with-nghttp2 \
-            --with-gssapi \
-            --with-ssl \
-            --without-librtmp \
-        && \
-        make install \
-    ' && \
-    cd .. && \
-    rm -r curl-7.45.0
-
-# Install ICU 57.1
-
-RUN wget http://download.icu-project.org/files/icu4c/57.1/icu4c-57_1-RHEL6-x64.tgz && \
-    tar -xf icu4c-57_1-RHEL6-x64.tgz -C / && \
-    rm icu4c-57_1-RHEL6-x64.tgz
-
-# Compile and install a version of the git that supports the features that cli repo build needs
-# NOTE: The git needs to be built after the curl so that it can use the libcurl to add https
-# protocol support.
-RUN \
-    wget https://www.kernel.org/pub/software/scm/git/git-2.9.5.tar.gz && \
-    tar -xf git-2.9.5.tar.gz && \
-    rm git-2.9.5.tar.gz && \
-    cd  git-2.9.5 && \
-    make configure && \
-    ./configure --prefix=/usr/local --without-tcltk && \
-    make -j $(nproc --all) all && \
-    make install && \
-    cd .. && \
-    rm -r git-2.9.5
-
-ENV LD_LIBRARY_PATH=/usr/local/lib

nonwindows.template.yml

@@ -1,33 +0,0 @@
-parameters:
-  targetRuntime: ''
-
-steps:
-
-# Build agent layout
-- script: ./dev.sh layout Release ${{ parameters.targetRuntime }}
-  workingDirectory: src
-  displayName: Build & Layout Release ${{ parameters.targetRuntime }}
-
-# Run test
-- script: ./dev.sh test
-  workingDirectory: src
-  displayName: Test
-  condition: and(ne('${{ parameters.targetRuntime }}', 'linux-arm64'), ne('${{ parameters.targetRuntime }}', 'linux-arm'))
-
-# # Publish test results
-# - task: PublishTestResults@2
-#   displayName: Publish Test Results **/*.trx
-#   condition: always()
-#   inputs:
-#     testRunner: VSTest
-#     testResultsFiles: '**/*.trx'
-#     testRunTitle: 'Agent Tests'
-
-# # Upload test log
-# - task: PublishBuildArtifacts@1
-#   displayName: Publish Test logs
-#   condition: always()
-#   inputs:
-#     pathToPublish: src/Test/TestLogs
-#     artifactName: $(System.JobId)
-#     artifactType: container

releaseNote.md

@@ -1,69 +1,84 @@
 ## Features
-  - Added the "severity" keyword to allow action authors to set the default severity for problem matchers (#203)
+
+- n/a
 
 ## Bugs
-  - Fixed generated self-hosted runner names to never go over 80 characters (helps Windows customers) (#193)
-  - Fixed `PrepareActions_DownloadActionFromGraph` test by pointing to an active Actions repository (#205)
+
+- Revert node12 version due to fs.copyFileSync hang #1537
+
 
 ## Misc
-  - Updated the publish and download artifact actions to use the v2 endpoint (#188)
-  - Updated the service name on self-hosted runner name to include repository or organization information (#193)
+
+- n/a
+
 
 ## Windows x64
-We recommend configuring the runner under "<DRIVE>:\actions-runner". This will help avoid issues related to service identity folder permissions and long file path restrictions on Windows
-``` 
-// Create a folder under the drive root
+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.
+
+The following snipped needs to be run on `powershell`:
+``` powershell
+# Create a folder under the drive root
 mkdir \actions-runner ; cd \actions-runner
-// Download the latest runner package
-Invoke-WebRequest -Uri https://githubassets.azureedge.net/runners/<RUNNER_VERSION>/actions-runner-win-x64-<RUNNER_VERSION>.zip -OutFile actions-runner-win-x64-<RUNNER_VERSION>.zip
-// Extract the installer
+# Download the latest runner package
+Invoke-WebRequest -Uri https://github.com/actions/runner/releases/download/v<RUNNER_VERSION>/actions-runner-win-x64-<RUNNER_VERSION>.zip -OutFile actions-runner-win-x64-<RUNNER_VERSION>.zip
+# Extract the installer
 Add-Type -AssemblyName System.IO.Compression.FileSystem ;
-[System.IO.Compression.ZipFile]::ExtractToDirectory("$HOME\Downloads\actions-runner-win-x64-<RUNNER_VERSION>.zip", "$PWD")
+[System.IO.Compression.ZipFile]::ExtractToDirectory("$PWD\actions-runner-win-x64-<RUNNER_VERSION>.zip", "$PWD")
 ```
 
 ## OSX
 
 ``` bash
-// Create a folder
+# Create a folder
 mkdir actions-runner && cd actions-runner
-// Download the latest runner package
-curl -O https://githubassets.azureedge.net/runners/<RUNNER_VERSION>/actions-runner-osx-x64-<RUNNER_VERSION>.tar.gz
-// Extract the installer
+# Download the latest runner package
+curl -O -L https://github.com/actions/runner/releases/download/v<RUNNER_VERSION>/actions-runner-osx-x64-<RUNNER_VERSION>.tar.gz
+# Extract the installer
 tar xzf ./actions-runner-osx-x64-<RUNNER_VERSION>.tar.gz
 ```
 
 ## Linux x64
 
 ``` bash
-// Create a folder
+# Create a folder
 mkdir actions-runner && cd actions-runner
-// Download the latest runner package
-curl -O https://githubassets.azureedge.net/runners/<RUNNER_VERSION>/actions-runner-linux-x64-<RUNNER_VERSION>.tar.gz
-// Extract the installer
+# Download the latest runner package
+curl -O -L https://github.com/actions/runner/releases/download/v<RUNNER_VERSION>/actions-runner-linux-x64-<RUNNER_VERSION>.tar.gz
+# Extract the installer
 tar xzf ./actions-runner-linux-x64-<RUNNER_VERSION>.tar.gz
 ```
 
-## Linux arm64 (Pre-release)
+## Linux arm64
 
 ``` bash
-// Create a folder
+# Create a folder
 mkdir actions-runner && cd actions-runner
-// Download the latest runner package
-curl -O https://githubassets.azureedge.net/runners/<RUNNER_VERSION>/actions-runner-linux-arm64-<RUNNER_VERSION>.tar.gz
-// Extract the installer
+# Download the latest runner package
+curl -O -L https://github.com/actions/runner/releases/download/v<RUNNER_VERSION>/actions-runner-linux-arm64-<RUNNER_VERSION>.tar.gz
+# Extract the installer
 tar xzf ./actions-runner-linux-arm64-<RUNNER_VERSION>.tar.gz
 ```
 
-## Linux arm (Pre-release)
+## Linux arm
 
 ``` bash
-// Create a folder
+# Create a folder
 mkdir actions-runner && cd actions-runner
-// Download the latest runner package
-curl -O https://githubassets.azureedge.net/runners/<RUNNER_VERSION>/actions-runner-linux-arm-<RUNNER_VERSION>.tar.gz
-// Extract the installer
+# Download the latest runner package
+curl -O -L https://github.com/actions/runner/releases/download/v<RUNNER_VERSION>/actions-runner-linux-arm-<RUNNER_VERSION>.tar.gz
+# Extract the installer
 tar xzf ./actions-runner-linux-arm-<RUNNER_VERSION>.tar.gz
 ```
 
 ## Using your self hosted runner
 For additional details about configuring, running, or shutting down the runner please check out our [product docs.](https://help.github.com/en/actions/automating-your-workflow-with-github-actions/adding-self-hosted-runners)
+
+## SHA-256 Checksums
+
+The SHA-256 checksums for the packages included in this build are shown below:
+
+- actions-runner-win-x64-<RUNNER_VERSION>.zip <!-- BEGIN SHA win-x64 --><WIN_X64_SHA><!-- END SHA win-x64 -->
+- actions-runner-osx-x64-<RUNNER_VERSION>.tar.gz <!-- BEGIN SHA osx-x64 --><OSX_X64_SHA><!-- END SHA osx-x64 -->
+- actions-runner-linux-x64-<RUNNER_VERSION>.tar.gz <!-- BEGIN SHA linux-x64 --><LINUX_X64_SHA><!-- END SHA linux-x64 -->
+- actions-runner-linux-arm64-<RUNNER_VERSION>.tar.gz <!-- BEGIN SHA linux-arm64 --><LINUX_ARM64_SHA><!-- END SHA linux-arm64 -->
+- actions-runner-linux-arm-<RUNNER_VERSION>.tar.gz <!-- BEGIN SHA linux-arm --><LINUX_ARM_SHA><!-- END SHA linux-arm -->

releaseVersion

@@ -0,0 +1 @@
+2.285.1

scripts/README.md

@@ -0,0 +1,4 @@
+# Sample scripts for self-hosted runners
+
+Here are some examples to work from if you'd like to automate your use of self-hosted runners.
+See the docs [here](../docs/automate.md).

scripts/create-latest-svc.sh

@@ -0,0 +1,181 @@
+#/bin/bash
+
+set -e
+
+# Notes:
+# PATS over envvars are more secure
+# Downloads latest runner release (not pre-release)
+# Configures it as a service more secure
+# Should be used on VMs and not containers
+# Works on OSX and Linux
+# Assumes x64 arch
+# See EXAMPLES below
+
+flags_found=false
+
+while getopts 's:g:n:u:l:' opt; do
+    flags_found=true
+
+    case $opt in
+    s)
+        runner_scope=$OPTARG
+        ;;
+    g)
+        ghe_hostname=$OPTARG
+        ;;
+    n)
+        runner_name=$OPTARG
+        ;;
+    u)
+        svc_user=$OPTARG
+        ;;
+    l)
+        labels=$OPTARG
+        ;;
+    *)
+        echo "
+Runner Service Installer
+Examples:
+RUNNER_CFG_PAT=<yourPAT> ./create-latest-svc.sh myuser/myrepo my.ghe.deployment.net
+RUNNER_CFG_PAT=<yourPAT> ./create-latest-svc.sh -s myorg -u user_name -l label1,label2
+Usage:
+    export RUNNER_CFG_PAT=<yourPAT>
+    ./create-latest-svc scope [ghe_domain] [name] [user] [labels]
+    -s          required  scope: repo (:owner/:repo) or org (:organization)
+    -g          optional  ghe_hostname: the fully qualified domain name of your GitHub Enterprise Server deployment
+    -n          optional  name of the runner, defaults to hostname
+    -u          optional  user svc will run as, defaults to current
+    -l          optional  list of labels (split by comma) applied on the runner"
+        exit 0
+        ;;
+    esac
+done
+
+shift "$((OPTIND - 1))"
+
+if ! "$flags_found"; then
+    runner_scope=${1}
+    ghe_hostname=${2}
+    runner_name=${3:-$(hostname)}
+    svc_user=${4:-$USER}
+    labels=${5}
+fi
+
+# apply defaults
+runner_name=${runner_name:-$(hostname)}
+svc_user=${svc_user:-$USER}
+
+echo "Configuring runner @ ${runner_scope}"
+sudo echo
+
+#---------------------------------------
+# Validate Environment
+#---------------------------------------
+runner_plat=linux
+[ ! -z "$(which sw_vers)" ] && runner_plat=osx;
+
+function fatal()
+{
+   echo "error: $1" >&2
+   exit 1
+}
+
+if [ -z "${runner_scope}" ]; then fatal "supply scope as argument 1"; fi
+if [ -z "${RUNNER_CFG_PAT}" ]; then fatal "RUNNER_CFG_PAT must be set before calling"; fi
+
+which curl || fatal "curl required.  Please install in PATH with apt-get, brew, etc"
+which jq || fatal "jq required.  Please install in PATH with apt-get, brew, etc"
+
+# bail early if there's already a runner there. also sudo early
+if [ -d ./runner ]; then
+    fatal "Runner already exists.  Use a different directory or delete ./runner"
+fi
+
+sudo -u ${svc_user} mkdir runner
+
+# TODO: validate not in a container
+# TODO: validate systemd or osx svc installer
+
+#--------------------------------------
+# Get a config token
+#--------------------------------------
+echo
+echo "Generating a registration token..."
+
+base_api_url="https://api.github.com"
+if [ -n "${ghe_hostname}" ]; then
+    base_api_url="https://${ghe_hostname}/api/v3"
+fi
+
+# if the scope has a slash, it's a repo runner
+orgs_or_repos="orgs"
+if [[ "$runner_scope" == *\/* ]]; then
+    orgs_or_repos="repos"
+fi
+
+export RUNNER_TOKEN=$(curl -s -X POST ${base_api_url}/${orgs_or_repos}/${runner_scope}/actions/runners/registration-token -H "accept: application/vnd.github.everest-preview+json" -H "authorization: token ${RUNNER_CFG_PAT}" | jq -r '.token')
+
+if [ "null" == "$RUNNER_TOKEN" -o -z "$RUNNER_TOKEN" ]; then fatal "Failed to get a token"; fi
+
+#---------------------------------------
+# Download latest released and extract
+#---------------------------------------
+echo
+echo "Downloading latest runner ..."
+
+# For the GHES Alpha, download the runner from github.com
+latest_version_label=$(curl -s -X GET 'https://api.github.com/repos/actions/runner/releases/latest' | jq -r '.tag_name')
+latest_version=$(echo ${latest_version_label:1})
+runner_file="actions-runner-${runner_plat}-x64-${latest_version}.tar.gz"
+
+if [ -f "${runner_file}" ]; then
+    echo "${runner_file} exists. skipping download."
+else
+    runner_url="https://github.com/actions/runner/releases/download/${latest_version_label}/${runner_file}"
+
+    echo "Downloading ${latest_version_label} for ${runner_plat} ..."
+    echo $runner_url
+
+    curl -O -L ${runner_url}
+fi
+
+ls -la *.tar.gz
+
+#---------------------------------------------------
+# extract to runner directory in this directory
+#---------------------------------------------------
+echo
+echo "Extracting ${runner_file} to ./runner"
+
+tar xzf "./${runner_file}" -C runner
+
+# export of pass
+sudo chown -R $svc_user ./runner
+
+pushd ./runner
+
+#---------------------------------------
+# Unattend config
+#---------------------------------------
+runner_url="https://github.com/${runner_scope}"
+if [ -n "${ghe_hostname}" ]; then
+    runner_url="https://${ghe_hostname}/${runner_scope}"
+fi
+
+echo
+echo "Configuring ${runner_name} @ $runner_url"
+echo "./config.sh --unattended --url $runner_url --token *** --name $runner_name --labels $labels"
+sudo -E -u ${svc_user} ./config.sh --unattended --url $runner_url --token $RUNNER_TOKEN --name $runner_name --labels $labels
+
+#---------------------------------------
+# Configuring as a service
+#---------------------------------------
+echo
+echo "Configuring as a service ..."
+prefix=""
+if [ "${runner_plat}" == "linux" ]; then
+    prefix="sudo "
+fi
+
+${prefix}./svc.sh install ${svc_user}
+${prefix}./svc.sh start

scripts/delete.sh

@@ -0,0 +1,83 @@
+#/bin/bash
+
+set -e
+
+#
+# Force deletes a runner from the service
+# The caller should have already ensured the runner is gone and/or stopped
+#
+# Examples:
+# RUNNER_CFG_PAT=<yourPAT> ./delete.sh myuser/myrepo myname
+# RUNNER_CFG_PAT=<yourPAT> ./delete.sh myorg
+#
+# Usage:
+#     export RUNNER_CFG_PAT=<yourPAT>
+#     ./delete.sh scope name
+#
+#      scope required  repo (:owner/:repo) or org (:organization)
+#      name  optional  defaults to hostname.  name to delete
+# 
+# Notes:
+# PATS over envvars are more secure
+# Works on OSX and Linux 
+# Assumes x64 arch
+#
+
+runner_scope=${1}
+runner_name=${2}
+
+echo "Deleting runner ${runner_name} @ ${runner_scope}"
+
+function fatal()
+{
+   echo "error: $1" >&2
+   exit 1
+}
+
+if [ -z "${runner_scope}" ]; then fatal "supply scope as argument 1"; fi
+if [ -z "${runner_name}" ]; then fatal "supply name as argument 2"; fi
+if [ -z "${RUNNER_CFG_PAT}" ]; then fatal "RUNNER_CFG_PAT must be set before calling"; fi
+
+which curl || fatal "curl required.  Please install in PATH with apt-get, brew, etc"
+which jq || fatal "jq required.  Please install in PATH with apt-get, brew, etc"
+
+base_api_url="https://api.github.com/orgs"
+if [[ "$runner_scope" == *\/* ]]; then
+    base_api_url="https://api.github.com/repos"
+fi
+
+
+#--------------------------------------
+# Ensure offline
+#--------------------------------------
+runner_status=$(curl -s -X GET ${base_api_url}/${runner_scope}/actions/runners?per_page=100  -H "accept: application/vnd.github.everest-preview+json" -H "authorization: token ${RUNNER_CFG_PAT}" \
+        | jq -M -j ".runners | .[] | select(.name == \"${runner_name}\") | .status")
+
+if [ -z "${runner_status}" ]; then 
+    fatal "Could not find runner with name ${runner_name}"
+fi
+
+echo "Status: ${runner_status}"
+
+if [ "${runner_status}" != "offline" ]; then 
+    fatal "Runner should be offline before removing"
+fi
+
+#--------------------------------------
+# Get id of runner to remove
+#--------------------------------------
+runner_id=$(curl -s -X GET ${base_api_url}/${runner_scope}/actions/runners?per_page=100  -H "accept: application/vnd.github.everest-preview+json" -H "authorization: token ${RUNNER_CFG_PAT}" \
+        | jq -M -j ".runners | .[] | select(.name == \"${runner_name}\") | .id")
+
+if [ -z "${runner_id}" ]; then 
+    fatal "Could not find runner with name ${runner_name}"
+fi 
+
+echo "Removing id ${runner_id}"
+
+#--------------------------------------
+# Remove the runner
+#--------------------------------------
+curl -s -X DELETE ${base_api_url}/${runner_scope}/actions/runners/${runner_id} -H "authorization: token ${RUNNER_CFG_PAT}"
+
+echo "Done."

scripts/remove-svc.sh

@@ -0,0 +1,76 @@
+#/bin/bash
+
+set -e
+
+#
+# Removes a runner running as a service
+# Must be run on the machine where the service is run
+#
+# Examples:
+# RUNNER_CFG_PAT=<yourPAT> ./remove-svc.sh myuser/myrepo
+# RUNNER_CFG_PAT=<yourPAT> ./remove-svc.sh myorg
+#
+# Usage:
+#     export RUNNER_CFG_PAT=<yourPAT>
+#     ./remove-svc scope name
+#
+#      scope required  repo (:owner/:repo) or org (:organization)
+#      name  optional  defaults to hostname.  name to uninstall and remove
+# 
+# Notes:
+# PATS over envvars are more secure
+# Should be used on VMs and not containers
+# Works on OSX and Linux 
+# Assumes x64 arch
+#
+
+runner_scope=${1}
+runner_name=${2:-$(hostname)}
+
+echo "Uninstalling runner ${runner_name} @ ${runner_scope}"
+sudo echo
+
+function fatal()
+{
+   echo "error: $1" >&2
+   exit 1
+}
+
+if [ -z "${runner_scope}" ]; then fatal "supply scope as argument 1"; fi
+if [ -z "${RUNNER_CFG_PAT}" ]; then fatal "RUNNER_CFG_PAT must be set before calling"; fi
+
+which curl || fatal "curl required.  Please install in PATH with apt-get, brew, etc"
+which jq || fatal "jq required.  Please install in PATH with apt-get, brew, etc"
+
+runner_plat=linux
+[ ! -z "$(which sw_vers)" ] && runner_plat=osx;
+
+#--------------------------------------
+# Get a remove token
+#--------------------------------------
+echo
+echo "Generating a removal token..."
+
+# if the scope has a slash, it's an repo runner
+base_api_url="https://api.github.com/orgs"
+if [[ "$runner_scope" == *\/* ]]; then
+    base_api_url="https://api.github.com/repos"
+fi
+
+export REMOVE_TOKEN=$(curl -s -X POST ${base_api_url}/${runner_scope}/actions/runners/remove-token -H "accept: application/vnd.github.everest-preview+json" -H "authorization: token ${RUNNER_CFG_PAT}" | jq -r '.token')
+
+if [ -z "$REMOVE_TOKEN" ]; then fatal "Failed to get a token"; fi 
+
+#---------------------------------------
+# Stop and uninstall the service
+#---------------------------------------
+echo
+echo "Uninstall the service ..."
+pushd ./runner
+prefix=""
+if [ "${runner_plat}" == "linux" ]; then 
+    prefix="sudo "
+fi 
+${prefix}./svc.sh stop
+${prefix}./svc.sh uninstall
+./config.sh remove --token $REMOVE_TOKEN

src/.editorconfig

@@ -0,0 +1,10 @@
+[*.cs]
+charset = utf-8
+insert_final_newline = true
+
+csharp_new_line_before_else = true
+csharp_new_line_before_catch = true
+csharp_new_line_before_finally = true
+csharp_new_line_before_open_brace = all
+
+csharp_space_after_keywords_in_control_flow_statements = true

src/ActionsRunner.sln

@@ -1,25 +1,30 @@
-
+
 Microsoft Visual Studio Solution File, Format Version 12.00
 # Visual Studio Version 16
 VisualStudioVersion = 16.0.29411.138
 MinimumVisualStudioVersion = 10.0.40219.1
-Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Runner.Common", "src\Runner.Common\Runner.Common.csproj", "{084289A3-CD7A-42E0-9219-4348B4B7E19B}"
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Runner.Common", "Runner.Common\Runner.Common.csproj", "{084289A3-CD7A-42E0-9219-4348B4B7E19B}"
 EndProject
-Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Runner.Listener", "src\Runner.Listener\Runner.Listener.csproj", "{7D461AEE-BF2A-4855-BD96-56921160B36A}"
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Runner.Listener", "Runner.Listener\Runner.Listener.csproj", "{7D461AEE-BF2A-4855-BD96-56921160B36A}"
 EndProject
-Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Runner.PluginHost", "src\Runner.PluginHost\Runner.PluginHost.csproj", "{D0320EB1-CB6D-4179-BFDC-2F2B664A370C}"
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Runner.PluginHost", "Runner.PluginHost\Runner.PluginHost.csproj", "{D0320EB1-CB6D-4179-BFDC-2F2B664A370C}"
 EndProject
-Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Runner.Plugins", "src\Runner.Plugins\Runner.Plugins.csproj", "{C23AFD6F-4DCD-4243-BC61-865BE31B9168}"
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Runner.Plugins", "Runner.Plugins\Runner.Plugins.csproj", "{C23AFD6F-4DCD-4243-BC61-865BE31B9168}"
 EndProject
-Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Runner.Sdk", "src\Runner.Sdk\Runner.Sdk.csproj", "{D0484633-DA97-4C34-8E47-1DADE212A57A}"
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Runner.Sdk", "Runner.Sdk\Runner.Sdk.csproj", "{D0484633-DA97-4C34-8E47-1DADE212A57A}"
 EndProject
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "RunnerService", "src\Runner.Service\Windows\RunnerService.csproj", "{D12EBD71-0464-46D0-8394-40BCFBA0A6F2}"
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "RunnerService", "Runner.Service\Windows\RunnerService.csproj", "{D12EBD71-0464-46D0-8394-40BCFBA0A6F2}"
 EndProject
-Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Runner.Worker", "src\Runner.Worker\Runner.Worker.csproj", "{C2F5B9FA-2621-411F-8EB2-273ED276F503}"
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Runner.Worker", "Runner.Worker\Runner.Worker.csproj", "{C2F5B9FA-2621-411F-8EB2-273ED276F503}"
 EndProject
-Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Sdk", "src\Sdk\Sdk.csproj", "{D2EE812B-E4DF-49BB-AE87-12BC49949B5F}"
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Sdk", "Sdk\Sdk.csproj", "{D2EE812B-E4DF-49BB-AE87-12BC49949B5F}"
 EndProject
-Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Test", "src\Test\Test.csproj", "{C932061F-F6A1-4F1E-B854-A6C6B30DC3EF}"
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Test", "Test\Test.csproj", "{C932061F-F6A1-4F1E-B854-A6C6B30DC3EF}"
+EndProject
+Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "Solution Items", "Solution Items", "{EFB254FC-7927-445E-BA64-6676ADB309E9}"
+	ProjectSection(SolutionItems) = preProject
+		.editorconfig = .editorconfig
+	EndProjectSection
 EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution

src/Directory.Build.props

@@ -46,4 +46,9 @@
   <PropertyGroup Condition="'$(Configuration)' == 'Debug'">
     <DefineConstants>$(DefineConstants);DEBUG</DefineConstants>
   </PropertyGroup>
+
+  <!-- Set Treat tarnings as errors -->
+  <PropertyGroup>
+    <TreatWarningsAsErrors>true</TreatWarningsAsErrors>
+  </PropertyGroup>
 </Project>

src/Misc/dotnet-install.ps1

@@ -23,8 +23,6 @@
     Default: latest
     Represents a build version on specific channel. Possible values:
     - latest - most latest build on specific channel
-    - coherent - most latest coherent build on specific channel
-          coherent applies only to SDK downloads
     - 3-part version in a format A.B.C - represents specific version of build
           examples: 2.0.0-preview2-006120, 1.1.0
 .PARAMETER InstallDir
@@ -69,6 +67,8 @@
 .PARAMETER ProxyUseDefaultCredentials
     Default: false
     Use default credentials, when using proxy address.
+.PARAMETER ProxyBypassList
+    If set with ProxyAddress, will provide the list of comma separated urls that will bypass the proxy
 .PARAMETER SkipNonVersionedFiles
     Default: false
     Skips installing non-versioned files if they already exist, such as dotnet.exe.
@@ -96,6 +96,7 @@ param(
    [string]$FeedCredential,
    [string]$ProxyAddress,
    [switch]$ProxyUseDefaultCredentials,
+   [string[]]$ProxyBypassList=@(),
    [switch]$SkipNonVersionedFiles,
    [switch]$NoCdn
 )
@@ -119,11 +120,45 @@ $VersionRegEx="/\d+\.\d+[^/]+/"
 $OverrideNonVersionedFiles = !$SkipNonVersionedFiles
 
 function Say($str) {
+    try {
         Write-Host "dotnet-install: $str"
+    }
+    catch {
+        # Some platforms cannot utilize Write-Host (Azure Functions, for instance). Fall back to Write-Output
+        Write-Output "dotnet-install: $str"
+    }
+}
+
+function Say-Warning($str) {
+    try {
+        Write-Warning "dotnet-install: $str"
+    }
+    catch {
+        # Some platforms cannot utilize Write-Warning (Azure Functions, for instance). Fall back to Write-Output
+        Write-Output "dotnet-install: Warning: $str"
+    }
+}
+
+# Writes a line with error style settings.
+# Use this function to show a human-readable comment along with an exception.
+function Say-Error($str) {
+    try {
+        # Write-Error is quite oververbose for the purpose of the function, let's write one line with error style settings.
+        $Host.UI.WriteErrorLine("dotnet-install: $str")
+    }
+    catch {
+        Write-Output "dotnet-install: Error: $str"
+    }
 }
 
 function Say-Verbose($str) {
+    try {
         Write-Verbose "dotnet-install: $str"
+    }
+    catch {
+        # Some platforms cannot utilize Write-Verbose (Azure Functions, for instance). Fall back to Write-Output
+        Write-Output "dotnet-install: $str"
+    }
 }
 
 function Say-Invocation($Invocation) {
@@ -137,7 +172,7 @@ function Invoke-With-Retry([ScriptBlock]$ScriptBlock, [int]$MaxAttempts = 3, [in
 
     while ($true) {
         try {
-            return $ScriptBlock.Invoke()
+            return & $ScriptBlock
         }
         catch {
             $Attempts++
@@ -154,7 +189,16 @@ function Invoke-With-Retry([ScriptBlock]$ScriptBlock, [int]$MaxAttempts = 3, [in
 function Get-Machine-Architecture() {
     Say-Invocation $MyInvocation
 
-    # possible values: amd64, x64, x86, arm64, arm
+    # On PS x86, PROCESSOR_ARCHITECTURE reports x86 even on x64 systems.
+    # To get the correct architecture, we need to use PROCESSOR_ARCHITEW6432.
+    # PS x64 doesn't define this, so we fall back to PROCESSOR_ARCHITECTURE.
+    # Possible values: amd64, x64, x86, arm64, arm
+
+    if( $ENV:PROCESSOR_ARCHITEW6432 -ne $null )
+    {    
+        return $ENV:PROCESSOR_ARCHITEW6432
+    }
+
     return $ENV:PROCESSOR_ARCHITECTURE
 }
 
@@ -167,7 +211,7 @@ function Get-CLIArchitecture-From-Architecture([string]$Architecture) {
         { $_ -eq "x86" } { return "x86" }
         { $_ -eq "arm" } { return "arm" }
         { $_ -eq "arm64" } { return "arm64" }
-        default { throw "Architecture not supported. If you think this is a bug, report it at https://github.com/dotnet/sdk/issues" }
+        default { throw "Architecture '$Architecture' not supported. If you think this is a bug, report it at https://github.com/dotnet/install-scripts/issues" }
     }
 }
 
@@ -228,7 +272,11 @@ function GetHTTPResponse([Uri] $Uri)
 
             if($ProxyAddress) {
                 $HttpClientHandler = New-Object System.Net.Http.HttpClientHandler
-                $HttpClientHandler.Proxy =  New-Object System.Net.WebProxy -Property @{Address=$ProxyAddress;UseDefaultCredentials=$ProxyUseDefaultCredentials}
+                $HttpClientHandler.Proxy =  New-Object System.Net.WebProxy -Property @{
+                    Address=$ProxyAddress;
+                    UseDefaultCredentials=$ProxyUseDefaultCredentials;
+                    BypassList = $ProxyBypassList;
+                }
                 $HttpClient = New-Object System.Net.Http.HttpClient -ArgumentList $HttpClientHandler
             }
             else {
@@ -238,19 +286,42 @@ function GetHTTPResponse([Uri] $Uri)
             # Default timeout for HttpClient is 100s.  For a 50 MB download this assumes 500 KB/s average, any less will time out
             # 20 minutes allows it to work over much slower connections.
             $HttpClient.Timeout = New-TimeSpan -Minutes 20
-            $Response = $HttpClient.GetAsync("${Uri}${FeedCredential}").Result
-            if (($Response -eq $null) -or (-not ($Response.IsSuccessStatusCode))) {
+            $Task = $HttpClient.GetAsync("${Uri}${FeedCredential}").ConfigureAwait("false");
+            $Response = $Task.GetAwaiter().GetResult();
+
+            if (($null -eq $Response) -or (-not ($Response.IsSuccessStatusCode))) {
                 # The feed credential is potentially sensitive info. Do not log FeedCredential to console output.
-                $ErrorMsg = "Failed to download $Uri."
-                if ($Response -ne $null) {
-                    $ErrorMsg += "  $Response"
+                $DownloadException = [System.Exception] "Unable to download $Uri."
+
+                if ($null -ne $Response) {
+                    $DownloadException.Data["StatusCode"] = [int] $Response.StatusCode
+                    $DownloadException.Data["ErrorMessage"] = "Unable to download $Uri. Returned HTTP status code: " + $DownloadException.Data["StatusCode"]
                 }
 
-                throw $ErrorMsg
+                throw $DownloadException
             }
 
             return $Response
         }
+        catch [System.Net.Http.HttpRequestException] {
+            $DownloadException = [System.Exception] "Unable to download $Uri."
+
+            # Pick up the exception message and inner exceptions' messages if they exist
+            $CurrentException = $PSItem.Exception
+            $ErrorMsg = $CurrentException.Message + "`r`n"
+            while ($CurrentException.InnerException) {
+              $CurrentException = $CurrentException.InnerException
+              $ErrorMsg += $CurrentException.Message + "`r`n"
+            }
+
+            # Check if there is an issue concerning TLS.
+            if ($ErrorMsg -like "*SSL/TLS*") {
+                $ErrorMsg += "Ensure that TLS 1.2 or higher is enabled to use this script.`r`n"
+            }
+
+            $DownloadException.Data["ErrorMessage"] = $ErrorMsg
+            throw $DownloadException
+        }
         finally {
              if ($HttpClient -ne $null) {
                 $HttpClient.Dispose()
@@ -259,7 +330,7 @@ function GetHTTPResponse([Uri] $Uri)
     })
 }
 
-function Get-Latest-Version-Info([string]$AzureFeed, [string]$Channel, [bool]$Coherent) {
+function Get-Latest-Version-Info([string]$AzureFeed, [string]$Channel) {
     Say-Invocation $MyInvocation
 
     $VersionFileUrl = $null
@@ -269,18 +340,12 @@ function Get-Latest-Version-Info([string]$AzureFeed, [string]$Channel, [bool]$Co
     elseif ($Runtime -eq "aspnetcore") {
         $VersionFileUrl = "$UncachedFeed/aspnetcore/Runtime/$Channel/latest.version"
     }
-    # Currently, the WindowsDesktop runtime is manufactured with the .Net core runtime
     elseif ($Runtime -eq "windowsdesktop") {
-        $VersionFileUrl = "$UncachedFeed/Runtime/$Channel/latest.version"
+        $VersionFileUrl = "$UncachedFeed/WindowsDesktop/$Channel/latest.version"
     }
     elseif (-not $Runtime) {
-        if ($Coherent) {
-            $VersionFileUrl = "$UncachedFeed/Sdk/$Channel/latest.coherent.version"
-        }
-        else {
         $VersionFileUrl = "$UncachedFeed/Sdk/$Channel/latest.version"
     }
-    }
     else {
         throw "Invalid value for `$Runtime"
     }
@@ -288,7 +353,8 @@ function Get-Latest-Version-Info([string]$AzureFeed, [string]$Channel, [bool]$Co
         $Response = GetHTTPResponse -Uri $VersionFileUrl
     }
     catch {
-        throw "Could not resolve version information."
+        Say-Error "Could not resolve version information."
+        throw
     }
     $StringContent = $Response.Content.ReadAsStringAsync().Result
 
@@ -314,7 +380,8 @@ function Parse-Jsonfile-For-Version([string]$JSonFile) {
         $JSonContent = Get-Content($JSonFile) -Raw | ConvertFrom-Json | Select-Object -expand "sdk" -ErrorAction SilentlyContinue
     }
     catch {
-        throw "Json file unreadable: '$JSonFile'"
+        Say-Error "Json file unreadable: '$JSonFile'"
+        throw
     }
     if ($JSonContent) {
         try {
@@ -327,7 +394,8 @@ function Parse-Jsonfile-For-Version([string]$JSonFile) {
             }
         }
         catch {
-            throw "Unable to parse the SDK node in '$JSonFile'"
+            Say-Error "Unable to parse the SDK node in '$JSonFile'"
+            throw
         }
     }
     else {
@@ -343,16 +411,12 @@ function Get-Specific-Version-From-Version([string]$AzureFeed, [string]$Channel,
     Say-Invocation $MyInvocation
 
     if (-not $JSonFile) {
-        switch ($Version.ToLower()) {
-            { $_ -eq "latest" } {
-                $LatestVersionInfo = Get-Latest-Version-Info -AzureFeed $AzureFeed -Channel $Channel -Coherent $False
+        if ($Version.ToLower() -eq "latest") {
+            $LatestVersionInfo = Get-Latest-Version-Info -AzureFeed $AzureFeed -Channel $Channel
             return $LatestVersionInfo.Version
         }
-            { $_ -eq "coherent" } {
-                $LatestVersionInfo = Get-Latest-Version-Info -AzureFeed $AzureFeed -Channel $Channel -Coherent $True
-                return $LatestVersionInfo.Version
-            }
-            default { return $Version }
+        else {
+            return $Version 
         }
     }
     else {
@@ -363,17 +427,29 @@ function Get-Specific-Version-From-Version([string]$AzureFeed, [string]$Channel,
 function Get-Download-Link([string]$AzureFeed, [string]$SpecificVersion, [string]$CLIArchitecture) {
     Say-Invocation $MyInvocation
 
+    # If anything fails in this lookup it will default to $SpecificVersion
+    $SpecificProductVersion = Get-Product-Version -AzureFeed $AzureFeed -SpecificVersion $SpecificVersion
+
     if ($Runtime -eq "dotnet") {
-        $PayloadURL = "$AzureFeed/Runtime/$SpecificVersion/dotnet-runtime-$SpecificVersion-win-$CLIArchitecture.zip"
+        $PayloadURL = "$AzureFeed/Runtime/$SpecificVersion/dotnet-runtime-$SpecificProductVersion-win-$CLIArchitecture.zip"
     }
     elseif ($Runtime -eq "aspnetcore") {
-        $PayloadURL = "$AzureFeed/aspnetcore/Runtime/$SpecificVersion/aspnetcore-runtime-$SpecificVersion-win-$CLIArchitecture.zip"
+        $PayloadURL = "$AzureFeed/aspnetcore/Runtime/$SpecificVersion/aspnetcore-runtime-$SpecificProductVersion-win-$CLIArchitecture.zip"
     }
     elseif ($Runtime -eq "windowsdesktop") {
-        $PayloadURL = "$AzureFeed/Runtime/$SpecificVersion/windowsdesktop-runtime-$SpecificVersion-win-$CLIArchitecture.zip"
+        # The windows desktop runtime is part of the core runtime layout prior to 5.0
+        $PayloadURL = "$AzureFeed/Runtime/$SpecificVersion/windowsdesktop-runtime-$SpecificProductVersion-win-$CLIArchitecture.zip"
+        if ($SpecificVersion -match '^(\d+)\.(.*)$')
+        {
+            $majorVersion = [int]$Matches[1]
+            if ($majorVersion -ge 5)
+            {
+                $PayloadURL = "$AzureFeed/WindowsDesktop/$SpecificVersion/windowsdesktop-runtime-$SpecificProductVersion-win-$CLIArchitecture.zip"
+            }
+        }
     }
     elseif (-not $Runtime) {
-        $PayloadURL = "$AzureFeed/Sdk/$SpecificVersion/dotnet-sdk-$SpecificVersion-win-$CLIArchitecture.zip"
+        $PayloadURL = "$AzureFeed/Sdk/$SpecificVersion/dotnet-sdk-$SpecificProductVersion-win-$CLIArchitecture.zip"
     }
     else {
         throw "Invalid value for `$Runtime"
@@ -381,7 +457,7 @@ function Get-Download-Link([string]$AzureFeed, [string]$SpecificVersion, [string
 
     Say-Verbose "Constructed primary named payload URL: $PayloadURL"
 
-    return $PayloadURL
+    return $PayloadURL, $SpecificProductVersion
 }
 
 function Get-LegacyDownload-Link([string]$AzureFeed, [string]$SpecificVersion, [string]$CLIArchitecture) {
@@ -402,6 +478,60 @@ function Get-LegacyDownload-Link([string]$AzureFeed, [string]$SpecificVersion, [
     return $PayloadURL
 }
 
+function Get-Product-Version([string]$AzureFeed, [string]$SpecificVersion) {
+    Say-Invocation $MyInvocation
+
+    if ($Runtime -eq "dotnet") {
+        $ProductVersionTxtURL = "$AzureFeed/Runtime/$SpecificVersion/productVersion.txt"
+    }
+    elseif ($Runtime -eq "aspnetcore") {
+        $ProductVersionTxtURL = "$AzureFeed/aspnetcore/Runtime/$SpecificVersion/productVersion.txt"
+    }
+    elseif ($Runtime -eq "windowsdesktop") {
+        # The windows desktop runtime is part of the core runtime layout prior to 5.0
+        $ProductVersionTxtURL = "$AzureFeed/Runtime/$SpecificVersion/productVersion.txt"
+        if ($SpecificVersion -match '^(\d+)\.(.*)')
+        {
+            $majorVersion = [int]$Matches[1]
+            if ($majorVersion -ge 5)
+            {
+                $ProductVersionTxtURL = "$AzureFeed/WindowsDesktop/$SpecificVersion/productVersion.txt"
+            }
+        }
+    }
+    elseif (-not $Runtime) {
+        $ProductVersionTxtURL = "$AzureFeed/Sdk/$SpecificVersion/productVersion.txt"
+    }
+    else {
+        throw "Invalid value '$Runtime' specified for `$Runtime"
+    }
+
+    Say-Verbose "Checking for existence of $ProductVersionTxtURL"
+
+    try {
+        $productVersionResponse = GetHTTPResponse($productVersionTxtUrl)
+
+        if ($productVersionResponse.StatusCode -eq 200) {
+            $productVersion = $productVersionResponse.Content.ReadAsStringAsync().Result.Trim()
+            if ($productVersion -ne $SpecificVersion)
+            {
+                Say "Using alternate version $productVersion found in $ProductVersionTxtURL"
+            }
+
+            return $productVersion
+        }
+        else {
+            Say-Verbose "Got StatusCode $($productVersionResponse.StatusCode) trying to get productVersion.txt at $productVersionTxtUrl, so using default value of $SpecificVersion"
+            $productVersion = $SpecificVersion
+        }
+    } catch {
+        Say-Verbose "Could not read productVersion.txt at $productVersionTxtUrl, so using default value of $SpecificVersion (Exception: '$($_.Exception.Message)' )"
+        $productVersion = $SpecificVersion
+    }
+
+    return $productVersion
+}
+
 function Get-User-Share-Path() {
     Say-Invocation $MyInvocation
 
@@ -539,6 +669,23 @@ function DownloadFile($Source, [string]$OutPath) {
     }
 }
 
+function SafeRemoveFile($Path) {
+    try {
+        if (Test-Path $Path) {
+            Remove-Item $Path
+            Say-Verbose "The temporary file `"$Path`" was removed."
+        }
+        else
+        {
+            Say-Verbose "The temporary file `"$Path`" does not exist, therefore is not removed."
+        }
+    }
+    catch
+    {
+        Say-Warning "Failed to remove the temporary file: `"$Path`", remove it manually."
+    }
+}
+
 function Prepend-Sdk-InstallRoot-To-Path([string]$InstallRoot, [string]$BinFolderRelativePath) {
     $BinPath = Get-Absolute-Path $(Join-Path -Path $InstallRoot -ChildPath $BinFolderRelativePath)
     if (-Not $NoPath) {
@@ -555,9 +702,14 @@ function Prepend-Sdk-InstallRoot-To-Path([string]$InstallRoot, [string]$BinFolde
     }
 }
 
+Say "Note that the intended use of this script is for Continuous Integration (CI) scenarios, where:"
+Say "- The SDK needs to be installed without user interaction and without admin rights."
+Say "- The SDK installation doesn't need to persist across multiple CI runs."
+Say "To set up a development environment or to run apps, use installers rather than this script. Visit https://dotnet.microsoft.com/download to get the installer.`r`n"
+
 $CLIArchitecture = Get-CLIArchitecture-From-Architecture $Architecture
 $SpecificVersion = Get-Specific-Version-From-Version -AzureFeed $AzureFeed -Channel $Channel -Version $Version -JSonFile $JSonFile
-$DownloadLink = Get-Download-Link -AzureFeed $AzureFeed -SpecificVersion $SpecificVersion -CLIArchitecture $CLIArchitecture
+$DownloadLink, $EffectiveVersion = Get-Download-Link -AzureFeed $AzureFeed -SpecificVersion $SpecificVersion -CLIArchitecture $CLIArchitecture
 $LegacyDownloadLink = Get-LegacyDownload-Link -AzureFeed $AzureFeed -SpecificVersion $SpecificVersion -CLIArchitecture $CLIArchitecture
 
 $InstallRoot = Resolve-Installation-Path $InstallDir
@@ -583,7 +735,12 @@ if ($DryRun) {
         }
     }
     Say "Repeatable invocation: $RepeatableCommand"
-    exit 0
+    if ($SpecificVersion -ne $EffectiveVersion)
+    {
+        Say "NOTE: Due to finding a version manifest with this runtime, it would actually install with version '$EffectiveVersion'"
+    }
+
+    return
 }
 
 if ($Runtime -eq "dotnet") {
@@ -606,12 +763,18 @@ else {
     throw "Invalid value for `$Runtime"
 }
 
+if ($SpecificVersion -ne $EffectiveVersion)
+{
+   Say "Performing installation checks for effective version: $EffectiveVersion"
+   $SpecificVersion = $EffectiveVersion
+}
+
 #  Check if the SDK version is already installed.
 $isAssetInstalled = Is-Dotnet-Package-Installed -InstallRoot $InstallRoot -RelativePathToPackage $dotnetPackageRelativePath -SpecificVersion $SpecificVersion
 if ($isAssetInstalled) {
     Say "$assetName version $SpecificVersion is already installed."
     Prepend-Sdk-InstallRoot-To-Path -InstallRoot $InstallRoot -BinFolderRelativePath $BinFolderRelativePath
-    exit 0
+    return
 }
 
 New-Item -ItemType Directory -Force -Path $InstallRoot | Out-Null
@@ -619,30 +782,69 @@ New-Item -ItemType Directory -Force -Path $InstallRoot | Out-Null
 $installDrive = $((Get-Item $InstallRoot).PSDrive.Name);
 $diskInfo = Get-PSDrive -Name $installDrive
 if ($diskInfo.Free / 1MB -le 100) {
-    Say "There is not enough disk space on drive ${installDrive}:"
-    exit 0
+    throw "There is not enough disk space on drive ${installDrive}:"
 }
 
 $ZipPath = [System.IO.Path]::combine([System.IO.Path]::GetTempPath(), [System.IO.Path]::GetRandomFileName())
 Say-Verbose "Zip path: $ZipPath"
 
 $DownloadFailed = $false
-Say "Downloading link: $DownloadLink"
+
+$PrimaryDownloadStatusCode = 0
+$LegacyDownloadStatusCode = 0
+
+$PrimaryDownloadFailedMsg = ""
+$LegacyDownloadFailedMsg = ""
+
+Say "Downloading primary link $DownloadLink"
 try {
     DownloadFile -Source $DownloadLink -OutPath $ZipPath
 }
 catch {
-    Say "Cannot download: $DownloadLink"
+    if ($PSItem.Exception.Data.Contains("StatusCode")) {
+        $PrimaryDownloadStatusCode = $PSItem.Exception.Data["StatusCode"]
+    }
+
+    if ($PSItem.Exception.Data.Contains("ErrorMessage")) {
+        $PrimaryDownloadFailedMsg = $PSItem.Exception.Data["ErrorMessage"]
+    } else {
+        $PrimaryDownloadFailedMsg = $PSItem.Exception.Message
+    }
+
+    if ($PrimaryDownloadStatusCode -eq 404) {
+        Say "The resource at $DownloadLink is not available."
+    } else {
+        Say $PSItem.Exception.Message
+    }
+
+    SafeRemoveFile -Path $ZipPath
+
     if ($LegacyDownloadLink) {
         $DownloadLink = $LegacyDownloadLink
         $ZipPath = [System.IO.Path]::combine([System.IO.Path]::GetTempPath(), [System.IO.Path]::GetRandomFileName())
         Say-Verbose "Legacy zip path: $ZipPath"
-        Say "Downloading legacy link: $DownloadLink"
+        Say "Downloading legacy link $DownloadLink"
         try {
             DownloadFile -Source $DownloadLink -OutPath $ZipPath
         }
         catch {
-            Say "Cannot download: $DownloadLink"
+            if ($PSItem.Exception.Data.Contains("StatusCode")) {
+                $LegacyDownloadStatusCode = $PSItem.Exception.Data["StatusCode"]
+            }
+
+            if ($PSItem.Exception.Data.Contains("ErrorMessage")) {
+                $LegacyDownloadFailedMsg = $PSItem.Exception.Data["ErrorMessage"]
+            } else {
+                $LegacyDownloadFailedMsg = $PSItem.Exception.Message
+            }
+
+            if ($LegacyDownloadStatusCode -eq 404) {
+                Say "The resource at $DownloadLink is not available."
+            } else {
+                Say $PSItem.Exception.Message
+            }
+
+            SafeRemoveFile -Path $ZipPath
             $DownloadFailed = $true
         }
     }
@@ -652,7 +854,19 @@ catch {
 }
 
 if ($DownloadFailed) {
-    throw "Could not find/download: `"$assetName`" with version = $SpecificVersion`nRefer to: https://aka.ms/dotnet-os-lifecycle for information on .NET Core support"
+    if (($PrimaryDownloadStatusCode -eq 404) -and ((-not $LegacyDownloadLink) -or ($LegacyDownloadStatusCode -eq 404))) {
+        throw "Could not find `"$assetName`" with version = $SpecificVersion`nRefer to: https://aka.ms/dotnet-os-lifecycle for information on .NET Core support"
+    } else {
+        # 404-NotFound is an expected response if it goes from only one of the links, do not show that error.
+        # If primary path is available (not 404-NotFound) then show the primary error else show the legacy error.
+        if ($PrimaryDownloadStatusCode -ne 404) {
+            throw "Could not download `"$assetName`" with version = $SpecificVersion`r`n$PrimaryDownloadFailedMsg"
+        }
+        if (($LegacyDownloadLink) -and ($LegacyDownloadStatusCode -ne 404)) {
+            throw "Could not download `"$assetName`" with version = $SpecificVersion`r`n$LegacyDownloadFailedMsg"
+        }
+        throw "Could not download `"$assetName`" with version = $SpecificVersion"
+    }
 }
 
 Say "Extracting zip from $DownloadLink"
@@ -674,13 +888,208 @@ if (!$isAssetInstalled) {
     $isAssetInstalled = Is-Dotnet-Package-Installed -InstallRoot $InstallRoot -RelativePathToPackage $dotnetPackageRelativePath -SpecificVersion $SpecificVersion
 }
 
+# Version verification failed. More likely something is wrong either with the downloaded content or with the verification algorithm.
 if (!$isAssetInstalled) {
+    Say-Error "Failed to verify the version of installed `"$assetName`".`nInstallation source: $DownloadLink.`nInstallation location: $InstallRoot.`nReport the bug at https://github.com/dotnet/install-scripts/issues."
     throw "`"$assetName`" with version = $SpecificVersion failed to install with an unknown error."
 }
 
-Remove-Item $ZipPath
+SafeRemoveFile -Path $ZipPath
 
 Prepend-Sdk-InstallRoot-To-Path -InstallRoot $InstallRoot -BinFolderRelativePath $BinFolderRelativePath
 
+Say "Note that the script does not resolve dependencies during installation."
+Say "To check the list of dependencies, go to https://docs.microsoft.com/dotnet/core/install/windows#dependencies"
 Say "Installation finished"
-exit 0
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+# ARdwT8jigpsm+mj7lrVU9upDkhVYhKeO8oiZq95Q53Zkteo=
+# SIG # End signature block

src/Misc/dotnet-install.sh

@@ -40,7 +40,7 @@ if [ -t 1 ] && command -v tput > /dev/null; then
 fi
 
 say_warning() {
-    printf "%b\n" "${yellow:-}dotnet_install: Warning: $1${normal:-}"
+    printf "%b\n" "${yellow:-}dotnet_install: Warning: $1${normal:-}" >&3
 }
 
 say_err() {
@@ -183,6 +183,9 @@ get_current_os_name() {
         elif is_musl_based_distro; then
             echo "linux-musl"
             return 0
+        elif [ "$linux_platform_name" = "linux-musl" ]; then
+            echo "linux-musl"
+            return 0
         else
             echo "linux"
             return 0
@@ -241,42 +244,6 @@ check_min_reqs() {
     return 0
 }
 
-check_pre_reqs() {
-    eval $invocation
-
-    if [ "${DOTNET_INSTALL_SKIP_PREREQS:-}" = "1" ]; then
-        return 0
-    fi
-
-    if [ "$(uname)" = "Linux" ]; then
-        if is_musl_based_distro; then
-            if ! command -v scanelf > /dev/null; then
-                say_warning "scanelf not found, please install pax-utils package."
-                return 0
-            fi
-            LDCONFIG_COMMAND="scanelf --ldpath -BF '%f'"
-            [ -z "$($LDCONFIG_COMMAND 2>/dev/null | grep libintl)" ] && say_warning "Unable to locate libintl. Probable prerequisite missing; install libintl (or gettext)."
-        else
-            if [ ! -x "$(command -v ldconfig)" ]; then
-                say_verbose "ldconfig is not in PATH, trying /sbin/ldconfig."
-                LDCONFIG_COMMAND="/sbin/ldconfig"
-            else
-                LDCONFIG_COMMAND="ldconfig"
-            fi
-            local librarypath=${LD_LIBRARY_PATH:-}
-            LDCONFIG_COMMAND="$LDCONFIG_COMMAND -NXv ${librarypath//:/ }"
-        fi
-
-        [ -z "$($LDCONFIG_COMMAND 2>/dev/null | grep zlib)" ] && say_warning "Unable to locate zlib. Probable prerequisite missing; install zlib."
-        [ -z "$($LDCONFIG_COMMAND 2>/dev/null | grep ssl)" ] && say_warning "Unable to locate libssl. Probable prerequisite missing; install libssl."
-        [ -z "$($LDCONFIG_COMMAND 2>/dev/null | grep libicu)" ] && say_warning "Unable to locate libicu. Probable prerequisite missing; install libicu."
-        [ -z "$($LDCONFIG_COMMAND 2>/dev/null | grep lttng)" ] && say_warning "Unable to locate liblttng. Probable prerequisite missing; install libcurl."
-        [ -z "$($LDCONFIG_COMMAND 2>/dev/null | grep libcurl)" ] && say_warning "Unable to locate libcurl. Probable prerequisite missing; install libcurl."
-    fi
-
-    return 0
-}
-
 # args:
 # input - $1
 to_lowercase() {
@@ -332,11 +299,11 @@ get_machine_architecture() {
     if command -v uname > /dev/null; then
         CPUName=$(uname -m)
         case $CPUName in
-        armv7l)
+        armv*l)
             echo "arm"
             return 0
             ;;
-        aarch64)
+        aarch64|arm64)
             echo "arm64"
             return 0
             ;;
@@ -373,10 +340,34 @@ get_normalized_architecture_from_architecture() {
             ;;
     esac
 
-    say_err "Architecture \`$architecture\` not supported. If you think this is a bug, report it at https://github.com/dotnet/sdk/issues"
+    say_err "Architecture \`$architecture\` not supported. If you think this is a bug, report it at https://github.com/dotnet/install-scripts/issues"
     return 1
 }
 
+# args:
+# user_defined_os - $1
+get_normalized_os() {
+    eval $invocation
+
+    local osname="$(to_lowercase "$1")"
+    if [ ! -z "$osname" ]; then
+        case "$osname" in
+            osx | freebsd | rhel.6 | linux-musl | linux)
+                echo "$osname"
+                return 0
+                ;;
+            *)
+                say_err "'$user_defined_os' is not a supported value for --os option, supported values are: osx, linux, linux-musl, freebsd, rhel.6. If you think this is a bug, report it at https://github.com/dotnet/install-scripts/issues."
+                return 1
+                ;;
+        esac
+    else
+        osname="$(get_current_os_name)" || return 1
+    fi
+    echo "$osname"
+    return 0
+}
+
 # The version text returned from the feeds is a 1-line or 2-line string:
 # For the SDK and the dotnet runtime (2 lines):
 # Line 1: # commit_hash
@@ -418,14 +409,12 @@ is_dotnet_package_installed() {
 # azure_feed - $1
 # channel - $2
 # normalized_architecture - $3
-# coherent - $4
 get_latest_version_info() {
     eval $invocation
 
     local azure_feed="$1"
     local channel="$2"
     local normalized_architecture="$3"
-    local coherent="$4"
 
     local version_file_url=null
     if [[ "$runtime" == "dotnet" ]]; then
@@ -433,11 +422,7 @@ get_latest_version_info() {
     elif [[ "$runtime" == "aspnetcore" ]]; then
         version_file_url="$uncached_feed/aspnetcore/Runtime/$channel/latest.version"
     elif [ -z "$runtime" ]; then
-        if [ "$coherent" = true ]; then
-            version_file_url="$uncached_feed/Sdk/$channel/latest.coherent.version"
-        else
          version_file_url="$uncached_feed/Sdk/$channel/latest.version"
-        fi
     else
         say_err "Invalid value for \$runtime"
         return 1
@@ -468,7 +453,6 @@ parse_jsonfile_for_version() {
     sdk_list=$(echo $sdk_section | awk -F"[{}]" '{print $2}')
     sdk_list=${sdk_list//[\" ]/}
     sdk_list=${sdk_list//,/$'\n'}
-    sdk_list="$(echo -e "${sdk_list}" | tr -d '[[:space:]]')"
 
     local version_info=""
     while read -r line; do
@@ -505,26 +489,16 @@ get_specific_version_from_version() {
     local json_file="$5"
 
     if [ -z "$json_file" ]; then
-        case "$version" in
-            latest)
+        if [[ "$version" == "latest" ]]; then
             local version_info
             version_info="$(get_latest_version_info "$azure_feed" "$channel" "$normalized_architecture" false)" || return 1
             say_verbose "get_specific_version_from_version: version_info=$version_info"
             echo "$version_info" | get_version_from_version_info
             return 0
-                ;;
-            coherent)
-                local version_info
-                version_info="$(get_latest_version_info "$azure_feed" "$channel" "$normalized_architecture" true)" || return 1
-                say_verbose "get_specific_version_from_version: version_info=$version_info"
-                echo "$version_info" | get_version_from_version_info
-                return 0
-                ;;
-            *)
+        else
             echo "$version"
             return 0
-                ;;
-        esac
+        fi
     else
         local version_info
         version_info="$(parse_jsonfile_for_version "$json_file")" || return 1
@@ -538,6 +512,7 @@ get_specific_version_from_version() {
 # channel - $2
 # normalized_architecture - $3
 # specific_version - $4
+# normalized_os - $5
 construct_download_link() {
     eval $invocation
 
@@ -545,17 +520,16 @@ construct_download_link() {
     local channel="$2"
     local normalized_architecture="$3"
     local specific_version="${4//[$'\t\r\n']}"
-
-    local osname
-    osname="$(get_current_os_name)" || return 1
+    local specific_product_version="$(get_specific_product_version "$1" "$4")"
+    local osname="$5"
 
     local download_link=null
     if [[ "$runtime" == "dotnet" ]]; then
-        download_link="$azure_feed/Runtime/$specific_version/dotnet-runtime-$specific_version-$osname-$normalized_architecture.tar.gz"
+        download_link="$azure_feed/Runtime/$specific_version/dotnet-runtime-$specific_product_version-$osname-$normalized_architecture.tar.gz"
     elif [[ "$runtime" == "aspnetcore" ]]; then
-        download_link="$azure_feed/aspnetcore/Runtime/$specific_version/aspnetcore-runtime-$specific_version-$osname-$normalized_architecture.tar.gz"
+        download_link="$azure_feed/aspnetcore/Runtime/$specific_version/aspnetcore-runtime-$specific_product_version-$osname-$normalized_architecture.tar.gz"
     elif [ -z "$runtime" ]; then
-        download_link="$azure_feed/Sdk/$specific_version/dotnet-sdk-$specific_version-$osname-$normalized_architecture.tar.gz"
+        download_link="$azure_feed/Sdk/$specific_version/dotnet-sdk-$specific_product_version-$osname-$normalized_architecture.tar.gz"
     else
         return 1
     fi
@@ -564,6 +538,50 @@ construct_download_link() {
     return 0
 }
 
+# args:
+# azure_feed - $1
+# specific_version - $2
+get_specific_product_version() {
+    # If we find a 'productVersion.txt' at the root of any folder, we'll use its contents
+    # to resolve the version of what's in the folder, superseding the specified version.
+    eval $invocation
+
+    local azure_feed="$1"
+    local specific_version="${2//[$'\t\r\n']}"
+    local specific_product_version=$specific_version
+
+    local download_link=null
+    if [[ "$runtime" == "dotnet" ]]; then
+        download_link="$azure_feed/Runtime/$specific_version/productVersion.txt${feed_credential}"
+    elif [[ "$runtime" == "aspnetcore" ]]; then
+        download_link="$azure_feed/aspnetcore/Runtime/$specific_version/productVersion.txt${feed_credential}"
+    elif [ -z "$runtime" ]; then
+        download_link="$azure_feed/Sdk/$specific_version/productVersion.txt${feed_credential}"
+    else
+        return 1
+    fi
+
+    if machine_has "curl"
+    then
+        specific_product_version=$(curl -s --fail "$download_link")
+        if [ $? -ne 0 ]
+        then
+            specific_product_version=$specific_version
+        fi
+    elif machine_has "wget"
+    then
+        specific_product_version=$(wget -qO- "$download_link")
+        if [ $? -ne 0 ]
+        then
+            specific_product_version=$specific_version
+        fi
+    fi
+    specific_product_version="${specific_product_version//[$'\t\r\n']}"
+
+    echo "$specific_product_version"
+    return 0
+}
+
 # args:
 # azure_feed - $1
 # channel - $2
@@ -684,11 +702,31 @@ extract_dotnet_package() {
     find "$temp_out_path" -type f | grep -Ev "$folders_with_version_regex" | copy_files_or_dirs_from_list "$temp_out_path" "$out_path" "$override_non_versioned_files"
 
     rm -rf "$temp_out_path"
+    rm -f "$zip_path" && say_verbose "Temporary zip file $zip_path was removed"
 
     if [ "$failed" = true ]; then
         say_err "Extraction failed"
         return 1
     fi
+    return 0
+}
+
+get_http_header_curl() {
+    eval $invocation
+    local remote_path="$1"
+    remote_path_with_credential="${remote_path}${feed_credential}"
+    curl_options="-I -sSL --retry 5 --retry-delay 2 --connect-timeout 15 "
+    curl $curl_options "$remote_path_with_credential" || return 1
+    return 0
+}
+
+get_http_header_wget() {
+    eval $invocation
+    local remote_path="$1"
+    remote_path_with_credential="${remote_path}${feed_credential}"
+    wget_options="-q -S --spider --tries 5 --waitretry 2 --connect-timeout 15 "
+    wget $wget_options "$remote_path_with_credential" 2>&1 || return 1
+    return 0
 }
 
 # args:
@@ -706,13 +744,30 @@ download() {
     fi
 
     local failed=false
+    local attempts=0
+    while [ $attempts -lt 3 ]; do
+        attempts=$((attempts+1))
+        failed=false
         if machine_has "curl"; then
             downloadcurl "$remote_path" "$out_path" || failed=true
         elif machine_has "wget"; then
             downloadwget "$remote_path" "$out_path" || failed=true
         else
-        failed=true
+            say_err "Missing dependency: neither curl nor wget was found."
+            exit 1
         fi
+
+        if [ "$failed" = false ] || [ $attempts -ge 3 ] || { [ ! -z $http_code ] && [ $http_code = "404" ]; }; then
+            break
+        fi
+
+        say "Download attempt #$attempts has failed: $http_code $download_error_msg"
+        say "Attempt #$((attempts+1)) will start in $((attempts*10)) seconds."
+        sleep $((attempts*20))
+    done
+
+
+
     if [ "$failed" = true ]; then
         say_verbose "Download failed: $remote_path"
         return 1
@@ -720,43 +775,60 @@ download() {
     return 0
 }
 
+# Updates global variables $http_code and $download_error_msg
 downloadcurl() {
     eval $invocation
+    unset http_code
+    unset download_error_msg
     local remote_path="$1"
     local out_path="${2:-}"
-
     # Append feed_credential as late as possible before calling curl to avoid logging feed_credential
-    remote_path="${remote_path}${feed_credential}"
-
+    local remote_path_with_credential="${remote_path}${feed_credential}"
+    local curl_options="--retry 20 --retry-delay 2 --connect-timeout 15 -sSL -f --create-dirs "
     local failed=false
     if [ -z "$out_path" ]; then
-        curl --retry 10 -sSL -f --create-dirs "$remote_path" || failed=true
+        curl $curl_options "$remote_path_with_credential" || failed=true
     else
-        curl --retry 10 -sSL -f --create-dirs -o "$out_path" "$remote_path" || failed=true
+        curl $curl_options -o "$out_path" "$remote_path_with_credential" || failed=true
     fi
     if [ "$failed" = true ]; then
-        say_verbose "Curl download failed"
+        local response=$(get_http_header_curl $remote_path_with_credential)
+        http_code=$( echo "$response" | awk '/^HTTP/{print $2}' | tail -1 )
+        download_error_msg="Unable to download $remote_path."
+        if  [[ $http_code != 2* ]]; then
+            download_error_msg+=" Returned HTTP status code: $http_code."
+        fi
+        say_verbose "$download_error_msg"
         return 1
     fi
     return 0
 }
 
+
+# Updates global variables $http_code and $download_error_msg
 downloadwget() {
     eval $invocation
+    unset http_code
+    unset download_error_msg
     local remote_path="$1"
     local out_path="${2:-}"
-
     # Append feed_credential as late as possible before calling wget to avoid logging feed_credential
-    remote_path="${remote_path}${feed_credential}"
-
+    local remote_path_with_credential="${remote_path}${feed_credential}"
+    local wget_options="--tries 20 --waitretry 2 --connect-timeout 15 "
     local failed=false
     if [ -z "$out_path" ]; then
-        wget -q --tries 10 -O - "$remote_path" || failed=true
+        wget -q $wget_options -O - "$remote_path_with_credential" || failed=true
     else
-        wget --tries 10 -O "$out_path" "$remote_path" || failed=true
+        wget $wget_options -O "$out_path" "$remote_path_with_credential" || failed=true
     fi
     if [ "$failed" = true ]; then
-        say_verbose "Wget download failed"
+        local response=$(get_http_header_wget $remote_path_with_credential)
+        http_code=$( echo "$response" | awk '/^  HTTP/{print $2}' | tail -1 )
+        download_error_msg="Unable to download $remote_path."
+        if  [[ $http_code != 2* ]]; then
+            download_error_msg+=" Returned HTTP status code: $http_code."
+        fi
+        say_verbose "$download_error_msg"
         return 1
     fi
     return 0
@@ -769,14 +841,18 @@ calculate_vars() {
     normalized_architecture="$(get_normalized_architecture_from_architecture "$architecture")"
     say_verbose "normalized_architecture=$normalized_architecture"
 
+    normalized_os="$(get_normalized_os "$user_defined_os")"
+    say_verbose "normalized_os=$normalized_os"
+
     specific_version="$(get_specific_version_from_version "$azure_feed" "$channel" "$normalized_architecture" "$version" "$json_file")"
+    specific_product_version="$(get_specific_product_version "$azure_feed" "$specific_version")"
     say_verbose "specific_version=$specific_version"
     if [ -z "$specific_version" ]; then
         say_err "Could not resolve version information."
         return 1
     fi
 
-    download_link="$(construct_download_link "$azure_feed" "$channel" "$normalized_architecture" "$specific_version")"
+    download_link="$(construct_download_link "$azure_feed" "$channel" "$normalized_architecture" "$specific_version" "$normalized_os")"
     say_verbose "Constructed primary named payload URL: $download_link"
 
     legacy_download_link="$(construct_legacy_download_link "$azure_feed" "$channel" "$normalized_architecture" "$specific_version")" || valid_legacy_download_link=false
@@ -821,38 +897,74 @@ install_dotnet() {
     zip_path="$(mktemp "$temporary_file_template")"
     say_verbose "Zip path: $zip_path"
 
-    say "Downloading link: $download_link"
 
     # Failures are normal in the non-legacy case for ultimately legacy downloads.
     # Do not output to stderr, since output to stderr is considered an error.
+    say "Downloading primary link $download_link"
+
+    # The download function will set variables $http_code and $download_error_msg in case of failure.
     download "$download_link" "$zip_path" 2>&1 || download_failed=true
 
     #  if the download fails, download the legacy_download_link
     if [ "$download_failed" = true ]; then
-        say "Cannot download: $download_link"
-
+        primary_path_http_code="$http_code"; primary_path_download_error_msg="$download_error_msg"
+        case $primary_path_http_code in
+        404)
+            say "The resource at $download_link is not available."
+            ;;
+        *)
+            say "$primary_path_download_error_msg"
+            ;;
+        esac
+        rm -f "$zip_path" 2>&1 && say_verbose "Temporary zip file $zip_path was removed"
         if [ "$valid_legacy_download_link" = true ]; then
             download_failed=false
             download_link="$legacy_download_link"
             zip_path="$(mktemp "$temporary_file_template")"
             say_verbose "Legacy zip path: $zip_path"
-            say "Downloading legacy link: $download_link"
+
+            say "Downloading legacy link $download_link"
+
+            # The download function will set variables $http_code and $download_error_msg in case of failure.
             download "$download_link" "$zip_path" 2>&1 || download_failed=true
 
             if [ "$download_failed" = true ]; then
-                say "Cannot download: $download_link"
+                legacy_path_http_code="$http_code";  legacy_path_download_error_msg="$download_error_msg"
+                case $legacy_path_http_code in
+                404)
+                    say "The resource at $download_link is not available."
+                    ;;
+                *)
+                    say "$legacy_path_download_error_msg"
+                    ;;
+                esac
+                rm -f "$zip_path" 2>&1 && say_verbose "Temporary zip file $zip_path was removed"
             fi
         fi
     fi
 
     if [ "$download_failed" = true ]; then
-        say_err "Could not find/download: \`$asset_name\` with version = $specific_version"
+        if [[ "$primary_path_http_code" = "404" && ( "$valid_legacy_download_link" = false || "$legacy_path_http_code" = "404") ]]; then
+            say_err "Could not find \`$asset_name\` with version = $specific_version"
             say_err "Refer to: https://aka.ms/dotnet-os-lifecycle for information on .NET Core support"
+        else
+            say_err "Could not download: \`$asset_name\` with version = $specific_version"
+            # 404-NotFound is an expected response if it goes from only one of the links, do not show that error.
+            # If primary path is available (not 404-NotFound) then show the primary error else show the legacy error.
+            if [ "$primary_path_http_code" != "404" ]; then
+                say_err "$primary_path_download_error_msg"
+                return 1
+            fi
+            if [[ "$valid_legacy_download_link" = true  && "$legacy_path_http_code" != "404" ]]; then
+                say_err "$legacy_path_download_error_msg"
+                return 1
+            fi
+        fi
         return 1
     fi
 
     say "Extracting zip from $download_link"
-    extract_dotnet_package "$zip_path" "$install_root"
+    extract_dotnet_package "$zip_path" "$install_root" || return 1
 
     #  Check if the SDK version is installed; if not, fail the installation.
     # if the version contains "RTM" or "servicing"; check if a 'release-type' SDK version is installed.
@@ -868,12 +980,14 @@ install_dotnet() {
     fi
 
     #  Check if the standard SDK version is installed.
-    say_verbose "Checking installation: version = $specific_version"
-    if is_dotnet_package_installed "$install_root" "$asset_relative_path" "$specific_version"; then
+    say_verbose "Checking installation: version = $specific_product_version"
+    if is_dotnet_package_installed "$install_root" "$asset_relative_path" "$specific_product_version"; then
         return 0
     fi
 
-    say_err "\`$asset_name\` with version = $specific_version failed to install with an unknown error."
+    # Version verification failed. More likely something is wrong either with the downloaded content or with the verification algorithm.
+    say_err "Failed to verify the version of installed \`$asset_name\`.\nInstallation source: $download_link.\nInstallation location: $install_root.\nReport the bug at https://github.com/dotnet/install-scripts/issues."
+    say_err "\`$asset_name\` with version = $specific_product_version failed to install with an unknown error."
     return 1
 }
 
@@ -899,6 +1013,7 @@ runtime=""
 runtime_id=""
 override_non_versioned_files=true
 non_dynamic_parameters=""
+user_defined_os=""
 
 while [ $# -ne 0 ]
 do
@@ -920,6 +1035,10 @@ do
             shift
             architecture="$1"
             ;;
+        --os|-[Oo][SS])
+            shift
+            user_defined_os="$1"
+            ;;
         --shared-runtime|-[Ss]hared[Rr]untime)
             say_warning "The --shared-runtime flag is obsolete and may be removed in a future version of this script. The recommended usage is to specify '--runtime dotnet'."
             if [ -z "$runtime" ]; then
@@ -971,6 +1090,7 @@ do
             shift
             runtime_id="$1"
             non_dynamic_parameters+=" $name "\""$1"\"""
+            say_warning "Use of --runtime-id is obsolete and should be limited to the versions below 2.1. To override architecture, use --architecture option instead. To override OS, use --os option instead."
             ;;
         --jsonfile|-[Jj][Ss]on[Ff]ile)
             shift
@@ -1003,8 +1123,6 @@ do
             echo "      -Version"
             echo "          Possible values:"
             echo "          - latest - most latest build on specific channel"
-            echo "          - coherent - most latest coherent build on specific channel"
-            echo "              coherent applies only to SDK downloads"
             echo "          - 3-part version in a format A.B.C - represents specific version of build"
             echo "              examples: 2.0.0-preview2-006120; 1.1.0"
             echo "  -i,--install-dir <DIR>             Install under specified location (see Install Location below)"
@@ -1012,6 +1130,11 @@ do
             echo "  --architecture <ARCHITECTURE>      Architecture of dotnet binaries to be installed, Defaults to \`$architecture\`."
             echo "      --arch,-Architecture,-Arch"
             echo "          Possible values: x64, arm, and arm64"
+            echo "  --os <system>                    Specifies operating system to be used when selecting the installer."
+            echo "          Overrides the OS determination approach used by the script. Supported values: osx, linux, linux-musl, freebsd, rhel.6."
+            echo "          In case any other value is provided, the platform will be determined by the script based on machine configuration."
+            echo "          Not supported for legacy links. Use --runtime-id to specify platform for legacy links."
+            echo "          Refer to: https://aka.ms/dotnet-os-lifecycle for more information."
             echo "  --runtime <RUNTIME>                Installs a shared runtime only, without the SDK."
             echo "      -Runtime"
             echo "          Possible values:"
@@ -1028,14 +1151,15 @@ do
             echo "  --no-cdn,-NoCdn                    Disable downloading from the Azure CDN, and use the uncached feed directly."
             echo "  --jsonfile <JSONFILE>              Determines the SDK version from a user specified global.json file."
             echo "                                     Note: global.json must have a value for 'SDK:Version'"
-            echo "  --runtime-id                       Installs the .NET Tools for the given platform (use linux-x64 for portable linux)."
-            echo "      -RuntimeId"
             echo "  -?,--?,-h,--help,-Help             Shows this help message"
             echo ""
             echo "Obsolete parameters:"
             echo "  --shared-runtime                   The recommended alternative is '--runtime dotnet'."
             echo "                                     This parameter is obsolete and may be removed in a future version of this script."
             echo "                                     Installs just the shared runtime bits, not the entire SDK."
+            echo "  --runtime-id                       Installs the .NET Tools for the given platform (use linux-x64 for portable linux)."
+            echo "      -RuntimeId"                    The parameter is obsolete and may be removed in a future version of this script. Should be used only for versions below 2.1.
+            echo "                                     For primary links to override OS or/and architecture, use --os and --architecture option instead."
             echo ""
             echo "Install Location:"
             echo "  Location is chosen in following order:"
@@ -1057,6 +1181,11 @@ if [ "$no_cdn" = true ]; then
     azure_feed="$uncached_feed"
 fi
 
+say "Note that the intended use of this script is for Continuous Integration (CI) scenarios, where:"
+say "- The SDK needs to be installed without user interaction and without admin rights."
+say "- The SDK installation doesn't need to persist across multiple CI runs."
+say "To set up a development environment or to run apps, use installers rather than this script. Visit https://dotnet.microsoft.com/download to get the installer.\n"
+
 check_min_reqs
 calculate_vars
 script_name=$(basename "$0")
@@ -1067,7 +1196,7 @@ if [ "$dry_run" = true ]; then
     if [ "$valid_legacy_download_link" = true ]; then
         say "Legacy named payload URL: $legacy_download_link"
     fi
-    repeatable_command="./$script_name --version "\""$specific_version"\"" --install-dir "\""$install_root"\"" --architecture "\""$normalized_architecture"\"""
+    repeatable_command="./$script_name --version "\""$specific_version"\"" --install-dir "\""$install_root"\"" --architecture "\""$normalized_architecture"\"" --os "\""$normalized_os"\"""
     if [[ "$runtime" == "dotnet" ]]; then
         repeatable_command+=" --runtime "\""dotnet"\"""
     elif [[ "$runtime" == "aspnetcore" ]]; then
@@ -1078,7 +1207,6 @@ if [ "$dry_run" = true ]; then
     exit 0
 fi
 
-check_pre_reqs
 install_dotnet
 
 bin_path="$(get_absolute_path "$(combine_paths "$install_root" "$bin_folder_relative_path")")"
@@ -1089,4 +1217,6 @@ else
     say "Binaries of dotnet can be found in $bin_path"
 fi
 
+say "Note that the script does not resolve dependencies during installation."
+say "To check the list of dependencies, go to https://docs.microsoft.com/dotnet/core/install, select your operating system and check the \"Dependencies\" section."
 say "Installation finished successfully."

src/Misc/expressionFunc/hashFiles/.eslintignore

@@ -0,0 +1,3 @@
+dist/
+lib/
+node_modules/

src/Misc/expressionFunc/hashFiles/.eslintrc.json

@@ -0,0 +1,59 @@
+{
+    "plugins": ["jest", "@typescript-eslint"],
+    "extends": ["plugin:github/es6"],
+    "parser": "@typescript-eslint/parser",
+    "parserOptions": {
+      "ecmaVersion": 9,
+      "sourceType": "module",
+      "project": "./tsconfig.json"
+    },
+    "rules": {
+      "eslint-comments/no-use": "off",
+      "import/no-namespace": "off",
+      "no-console": "off",
+      "no-unused-vars": "off",
+      "@typescript-eslint/no-unused-vars": "error",
+      "@typescript-eslint/explicit-member-accessibility": ["error", {"accessibility": "no-public"}],
+      "@typescript-eslint/no-require-imports": "error",
+      "@typescript-eslint/array-type": "error",
+      "@typescript-eslint/await-thenable": "error",
+      "@typescript-eslint/ban-ts-ignore": "error",
+      "camelcase": "off",
+      "@typescript-eslint/camelcase": "error",
+      "@typescript-eslint/class-name-casing": "error",
+      "@typescript-eslint/explicit-function-return-type": ["error", {"allowExpressions": true}],
+      "@typescript-eslint/func-call-spacing": ["error", "never"],
+      "@typescript-eslint/generic-type-naming": ["error", "^[A-Z][A-Za-z]*$"],
+      "@typescript-eslint/no-array-constructor": "error",
+      "@typescript-eslint/no-empty-interface": "error",
+      "@typescript-eslint/no-explicit-any": "error",
+      "@typescript-eslint/no-extraneous-class": "error",
+      "@typescript-eslint/no-for-in-array": "error",
+      "@typescript-eslint/no-inferrable-types": "error",
+      "@typescript-eslint/no-misused-new": "error",
+      "@typescript-eslint/no-namespace": "error",
+      "@typescript-eslint/no-non-null-assertion": "warn",
+      "@typescript-eslint/no-object-literal-type-assertion": "error",
+      "@typescript-eslint/no-unnecessary-qualifier": "error",
+      "@typescript-eslint/no-unnecessary-type-assertion": "error",
+      "@typescript-eslint/no-useless-constructor": "error",
+      "@typescript-eslint/no-var-requires": "error",
+      "@typescript-eslint/prefer-for-of": "warn",
+      "@typescript-eslint/prefer-function-type": "warn",
+      "@typescript-eslint/prefer-includes": "error",
+      "@typescript-eslint/prefer-interface": "error",
+      "@typescript-eslint/prefer-string-starts-ends-with": "error",
+      "@typescript-eslint/promise-function-async": "error",
+      "@typescript-eslint/require-array-sort-compare": "error",
+      "@typescript-eslint/restrict-plus-operands": "error",
+      "semi": "off",
+      "@typescript-eslint/semi": ["error", "never"],
+      "@typescript-eslint/type-annotation-spacing": "error",
+      "@typescript-eslint/unbound-method": "error"
+    },
+    "env": {
+      "node": true,
+      "es6": true,
+      "jest/globals": true
+    }
+  }

src/Misc/expressionFunc/hashFiles/.prettierignore

@@ -0,0 +1,3 @@
+dist/
+lib/
+node_modules/

src/Misc/expressionFunc/hashFiles/.prettierrc.json

@@ -0,0 +1,11 @@
+{
+    "printWidth": 80,
+    "tabWidth": 2,
+    "useTabs": false,
+    "semi": false,
+    "singleQuote": true,
+    "trailingComma": "none",
+    "bracketSpacing": false,
+    "arrowParens": "avoid",
+    "parser": "typescript"
+  }

src/Misc/expressionFunc/hashFiles/README.md

@@ -0,0 +1 @@
+To update hashFiles under `Misc/layoutbin` run `npm install && npm run all`

src/Misc/expressionFunc/hashFiles/package.json

@@ -0,0 +1,35 @@
+{
+  "name": "hashFiles",
+  "version": "1.0.0",
+  "description": "GitHub Actions HashFiles() expression function",
+  "main": "lib/hashFiles.js",
+  "scripts": {
+    "build": "tsc",
+    "format": "prettier --write **/*.ts",
+    "format-check": "prettier --check **/*.ts",
+    "lint": "eslint src/**/*.ts",
+    "pack": "ncc build -o ../../layoutbin/hashFiles",
+    "all": "npm run build && npm run format && npm run lint && npm run pack"
+  },
+  "repository": {
+    "type": "git",
+    "url": "git+https://github.com/actions/runner.git"
+  },
+  "keywords": [
+    "actions"
+  ],
+  "author": "GitHub Actions",
+  "license": "MIT",
+  "dependencies": {
+    "@actions/glob": "^0.1.0"
+  },
+  "devDependencies": {
+    "@types/node": "^12.7.12",
+    "@typescript-eslint/parser": "^2.8.0",
+    "@zeit/ncc": "^0.20.5",
+    "eslint": "^6.8.0",
+    "eslint-plugin-github": "^2.0.0",
+    "prettier": "^1.19.1",
+    "typescript": "^3.6.4"
+  }
+}

src/Misc/expressionFunc/hashFiles/src/hashFiles.ts

@@ -0,0 +1,55 @@
+import * as glob from '@actions/glob'
+import * as crypto from 'crypto'
+import * as fs from 'fs'
+import * as stream from 'stream'
+import * as util from 'util'
+import * as path from 'path'
+
+async function run(): Promise<void> {
+  // arg0 -> node
+  // arg1 -> hashFiles.js
+  // env[followSymbolicLinks] = true/null
+  // env[patterns] -> glob patterns
+  let followSymbolicLinks = false
+  const matchPatterns = process.env.patterns || ''
+  if (process.env.followSymbolicLinks === 'true') {
+    console.log('Follow symbolic links')
+    followSymbolicLinks = true
+  }
+
+  console.log(`Match Pattern: ${matchPatterns}`)
+  let hasMatch = false
+  const githubWorkspace = process.cwd()
+  const result = crypto.createHash('sha256')
+  let count = 0
+  const globber = await glob.create(matchPatterns, {followSymbolicLinks})
+  for await (const file of globber.globGenerator()) {
+    console.log(file)
+    if (!file.startsWith(`${githubWorkspace}${path.sep}`)) {
+      console.log(`Ignore '${file}' since it is not under GITHUB_WORKSPACE.`)
+      continue
+    }
+    if (fs.statSync(file).isDirectory()) {
+      console.log(`Skip directory '${file}'.`)
+      continue
+    }
+    const hash = crypto.createHash('sha256')
+    const pipeline = util.promisify(stream.pipeline)
+    await pipeline(fs.createReadStream(file), hash)
+    result.write(hash.digest())
+    count++
+    if (!hasMatch) {
+      hasMatch = true
+    }
+  }
+  result.end()
+
+  if (hasMatch) {
+    console.log(`Find ${count} files to hash.`)
+    console.error(`__OUTPUT__${result.digest('hex')}__OUTPUT__`)
+  } else {
+    console.error(`__OUTPUT____OUTPUT__`)
+  }
+}
+
+run()

src/Misc/expressionFunc/hashFiles/tsconfig.json

@@ -0,0 +1,12 @@
+{
+  "compilerOptions": {
+    "target": "es6",                          /* Specify ECMAScript target version: 'ES3' (default), 'ES5', 'ES2015', 'ES2016', 'ES2017', 'ES2018', 'ES2019' or 'ESNEXT'. */
+    "module": "commonjs",                     /* Specify module code generation: 'none', 'commonjs', 'amd', 'system', 'umd', 'es2015', or 'ESNext'. */
+    "outDir": "./lib",                        /* Redirect output structure to the directory. */
+    "rootDir": "./src",                       /* Specify the root directory of input files. Use to control the output directory structure with --outDir. */
+    "strict": true,                           /* Enable all strict type-checking options. */
+    "noImplicitAny": true,                    /* Raise error on expressions and declarations with an implied 'any' type. */
+    "esModuleInterop": true                   /* Enables emit interoperability between CommonJS and ES Modules via creation of namespace objects for all imports. Implies 'allowSyntheticDefaultImports'. */
+  },
+  "exclude": ["node_modules", "**/*.test.ts"]
+}

src/Misc/externals.sh

@@ -4,6 +4,7 @@ PRECACHE=$2
 
 NODE_URL=https://nodejs.org/dist
 NODE12_VERSION="12.13.1"
+NODE16_VERSION="16.13.0"
 
 get_abs_path() {
   # exploits the fact that pwd will print abs path when no args
@@ -126,6 +127,8 @@ function acquireExternalTool() {
 if [[ "$PACKAGERUNTIME" == "win-x64" || "$PACKAGERUNTIME" == "win-x86" ]]; then
     acquireExternalTool "$NODE_URL/v${NODE12_VERSION}/$PACKAGERUNTIME/node.exe" node12/bin
     acquireExternalTool "$NODE_URL/v${NODE12_VERSION}/$PACKAGERUNTIME/node.lib" node12/bin
+    acquireExternalTool "$NODE_URL/v${NODE16_VERSION}/$PACKAGERUNTIME/node.exe" node16/bin
+    acquireExternalTool "$NODE_URL/v${NODE16_VERSION}/$PACKAGERUNTIME/node.lib" node16/bin
     if [[ "$PRECACHE" != "" ]]; then
         acquireExternalTool "https://github.com/microsoft/vswhere/releases/download/2.6.7/vswhere.exe" vswhere
     fi
@@ -134,18 +137,23 @@ fi
 # Download the external tools only for OSX.
 if [[ "$PACKAGERUNTIME" == "osx-x64" ]]; then
     acquireExternalTool "$NODE_URL/v${NODE12_VERSION}/node-v${NODE12_VERSION}-darwin-x64.tar.gz" node12 fix_nested_dir
+    acquireExternalTool "$NODE_URL/v${NODE16_VERSION}/node-v${NODE16_VERSION}-darwin-x64.tar.gz" node16 fix_nested_dir
 fi
 
 # Download the external tools for Linux PACKAGERUNTIMEs.
 if [[ "$PACKAGERUNTIME" == "linux-x64" ]]; then
     acquireExternalTool "$NODE_URL/v${NODE12_VERSION}/node-v${NODE12_VERSION}-linux-x64.tar.gz" node12 fix_nested_dir
     acquireExternalTool "https://vstsagenttools.blob.core.windows.net/tools/nodejs/${NODE12_VERSION}/alpine/x64/node-${NODE12_VERSION}-alpine-x64.tar.gz" node12_alpine
+    acquireExternalTool "$NODE_URL/v${NODE16_VERSION}/node-v${NODE16_VERSION}-linux-x64.tar.gz" node16 fix_nested_dir
+    acquireExternalTool "https://vstsagenttools.blob.core.windows.net/tools/nodejs/${NODE16_VERSION}/alpine/x64/node-v${NODE16_VERSION}-alpine-x64.tar.gz" node16_alpine
 fi
 
 if [[ "$PACKAGERUNTIME" == "linux-arm64" ]]; then
     acquireExternalTool "$NODE_URL/v${NODE12_VERSION}/node-v${NODE12_VERSION}-linux-arm64.tar.gz" node12 fix_nested_dir
+    acquireExternalTool "$NODE_URL/v${NODE16_VERSION}/node-v${NODE16_VERSION}-linux-arm64.tar.gz" node16 fix_nested_dir
 fi
 
 if [[ "$PACKAGERUNTIME" == "linux-arm" ]]; then
     acquireExternalTool "$NODE_URL/v${NODE12_VERSION}/node-v${NODE12_VERSION}-linux-armv7l.tar.gz" node12 fix_nested_dir
+    acquireExternalTool "$NODE_URL/v${NODE16_VERSION}/node-v${NODE16_VERSION}-linux-armv7l.tar.gz" node16 fix_nested_dir
 fi

src/Misc/layoutbin/RunnerService.js

@@ -16,11 +16,11 @@ if (supported.indexOf(process.platform) == -1) {
 var stopping = false;
 var listener = null;
 
-var runService = function() {
+var runService = function () {
     var listenerExePath = path.join(__dirname, '../bin/Runner.Listener');
     var interactive = process.argv[2] === "interactive";
 
-    if(!stopping) {
+    if (!stopping) {
         try {
             if (interactive) {
                 console.log('Starting Runner listener interactively');
@@ -30,7 +30,7 @@ var runService = function() {
                 listener = childProcess.spawn(listenerExePath, ['run', '--startuptype', 'service'], { env: process.env });
             }
 
-            console.log('Started listener process');
+            console.log(`Started listener process, pid: ${listener.pid}`);
 
             listener.stdout.on('data', (data) => {
                 process.stdout.write(data.toString('utf8'));
@@ -40,6 +40,10 @@ var runService = function() {
                 process.stdout.write(data.toString('utf8'));
             });
 
+            listener.on("error", (err) => {
+                console.log(`Runner listener fail to start with error ${err.message}`);
+            });
+
             listener.on('close', (code) => {
                 console.log(`Runner listener exited with error code ${code}`);
 
@@ -57,12 +61,12 @@ var runService = function() {
                     console.log('Runner listener exit with undefined return code, re-launch runner in 5 seconds.');
                 }
 
-                if(!stopping) {
+                if (!stopping) {
                     setTimeout(runService, 5000);
                 }
             });
 
-        } catch(ex) {
+        } catch (ex) {
             console.log(ex);
         }
     }
@@ -71,14 +75,15 @@ var runService = function() {
 runService();
 console.log('Started running service');
 
-var gracefulShutdown = function(code) {
+var gracefulShutdown = function (code) {
     console.log('Shutting down runner listener');
     stopping = true;
     if (listener) {
         console.log('Sending SIGINT to runner listener to stop');
         listener.kill('SIGINT');
 
-        // TODO wait for 30 seconds and send a SIGKILL
+        console.log('Sending SIGKILL to runner listener');
+        setTimeout(() => listener.kill('SIGKILL'), 30000);
     }
 }
 

src/Misc/layoutbin/actions.runner.plist.template

@@ -23,5 +23,9 @@
       <key>ACTIONS_RUNNER_SVC</key>
       <string>1</string>
     </dict>
+    <key>ProcessType</key>
+    <string>Interactive</string>
+    <key>SessionCreate</key>
+    <true/>
   </dict>
 </plist>

src/Misc/layoutbin/checkScripts/downloadCert.js

@@ -0,0 +1,115 @@
+const https = require('https')
+const fs = require('fs')
+const http = require('http')
+const hostname = process.env['HOSTNAME'] || ''
+const port = process.env['PORT'] || ''
+const path = process.env['PATH'] || ''
+const pat = process.env['PAT'] || ''
+const proxyHost = process.env['PROXYHOST'] || ''
+const proxyPort = process.env['PROXYPORT'] || ''
+const proxyUsername = process.env['PROXYUSERNAME'] || ''
+const proxyPassword = process.env['PROXYPASSWORD'] || ''
+
+process.env['NODE_TLS_REJECT_UNAUTHORIZED'] = '0'
+
+if (proxyHost === '') {
+    const options = {
+        hostname: hostname,
+        port: port,
+        path: path,
+        method: 'GET',
+        headers: {
+            'User-Agent': 'GitHubActionsRunnerCheck/1.0',
+            'Authorization': `token ${pat}`
+        },
+    }
+    const req = https.request(options, res => {
+        console.log(`statusCode: ${res.statusCode}`)
+        console.log(`headers: ${JSON.stringify(res.headers)}`)
+        let cert = socket.getPeerCertificate(true)
+        let certPEM = ''
+        let fingerprints = {}
+        while (cert != null && fingerprints[cert.fingerprint] != '1') {
+            fingerprints[cert.fingerprint] = '1'
+            certPEM = certPEM + '-----BEGIN CERTIFICATE-----\n'
+            let certEncoded = cert.raw.toString('base64')
+            for (let i = 0; i < certEncoded.length; i++) {
+                certPEM = certPEM + certEncoded[i]
+                if (i != certEncoded.length - 1 && (i + 1) % 64 == 0) {
+                    certPEM = certPEM + '\n'
+                }
+            }
+            certPEM = certPEM + '\n-----END CERTIFICATE-----\n'
+            cert = cert.issuerCertificate
+        }
+        console.log(certPEM)
+        fs.writeFileSync('./download_ca_cert.pem', certPEM)
+        res.on('data', d => {
+            process.stdout.write(d)
+        })
+    })
+    req.on('error', error => {
+        console.error(error)
+    })
+    req.end()
+}
+else {
+    const auth = 'Basic ' + Buffer.from(proxyUsername + ':' + proxyPassword).toString('base64')
+
+    const options = {
+        host: proxyHost,
+        port: proxyPort,
+        method: 'CONNECT',
+        path: `${hostname}:${port}`,
+    }
+
+    if (proxyUsername != '' || proxyPassword != '') {
+        options.headers = {
+            'Proxy-Authorization': auth,
+        }
+    }
+
+    http.request(options).on('connect', (res, socket) => {
+        if (res.statusCode != 200) {
+            throw new Error(`Proxy returns code: ${res.statusCode}`)
+        }
+
+        https.get({
+            host: hostname,
+            port: port,
+            socket: socket,
+            agent: false,
+            path: '/',
+            headers: {
+                'User-Agent': 'GitHubActionsRunnerCheck/1.0',
+                'Authorization': `token ${pat}`
+            }
+        }, (res) => {
+            let cert = res.socket.getPeerCertificate(true)
+            let certPEM = ''
+            let fingerprints = {}
+            while (cert != null && fingerprints[cert.fingerprint] != '1') {
+                fingerprints[cert.fingerprint] = '1'
+                certPEM = certPEM + '-----BEGIN CERTIFICATE-----\n'
+                let certEncoded = cert.raw.toString('base64')
+                for (let i = 0; i < certEncoded.length; i++) {
+                    certPEM = certPEM + certEncoded[i]
+                    if (i != certEncoded.length - 1 && (i + 1) % 64 == 0) {
+                        certPEM = certPEM + '\n'
+                    }
+                }
+                certPEM = certPEM + '\n-----END CERTIFICATE-----\n'
+                cert = cert.issuerCertificate
+            }
+            console.log(certPEM)
+            fs.writeFileSync('./download_ca_cert.pem', certPEM)
+            console.log(`statusCode: ${res.statusCode}`)
+            console.log(`headers: ${JSON.stringify(res.headers)}`)
+            res.on('data', d => {
+                process.stdout.write(d)
+            })
+        })
+    }).on('error', (err) => {
+        console.error('error', err)
+    }).end()
+}

src/Misc/layoutbin/checkScripts/makeWebRequest.js

@@ -0,0 +1,75 @@
+const https = require('https')
+const http = require('http')
+const hostname = process.env['HOSTNAME'] || ''
+const port = process.env['PORT'] || ''
+const path = process.env['PATH'] || ''
+const pat = process.env['PAT'] || ''
+const proxyHost = process.env['PROXYHOST'] || ''
+const proxyPort = process.env['PROXYPORT'] || ''
+const proxyUsername = process.env['PROXYUSERNAME'] || ''
+const proxyPassword = process.env['PROXYPASSWORD'] || ''
+
+if (proxyHost === '') {
+    const options = {
+        hostname: hostname,
+        port: port,
+        path: path,
+        method: 'GET',
+        headers: {
+            'User-Agent': 'GitHubActionsRunnerCheck/1.0',
+            'Authorization': `token ${pat}`,
+        }
+    }
+    const req = https.request(options, res => {
+        console.log(`statusCode: ${res.statusCode}`)
+        console.log(`headers: ${JSON.stringify(res.headers)}`)
+
+        res.on('data', d => {
+            process.stdout.write(d)
+        })
+    })
+    req.on('error', error => {
+        console.error(error)
+    })
+    req.end()
+}
+else {
+    const proxyAuth = 'Basic ' + Buffer.from(proxyUsername + ':' + proxyPassword).toString('base64')
+    const options = {
+        hostname: proxyHost,
+        port: proxyPort,
+        method: 'CONNECT',
+        path: `${hostname}:${port}`
+    }
+
+    if (proxyUsername != '' || proxyPassword != '') {
+        options.headers = {
+            'Proxy-Authorization': proxyAuth,
+        }
+    }
+    http.request(options).on('connect', (res, socket) => {
+        if (res.statusCode != 200) {
+            throw new Error(`Proxy returns code: ${res.statusCode}`)
+        }
+        https.get({
+            host: hostname,
+            port: port,
+            socket: socket,
+            agent: false,
+            path: path,
+            headers: {
+                'User-Agent': 'GitHubActionsRunnerCheck/1.0',
+                'Authorization': `token ${pat}`,
+            }
+        }, (res) => {
+            console.log(`statusCode: ${res.statusCode}`)
+            console.log(`headers: ${JSON.stringify(res.headers)}`)
+
+            res.on('data', d => {
+                process.stdout.write(d)
+            })
+        })
+    }).on('error', (err) => {
+        console.error('error', err)
+    }).end()
+}

src/Misc/layoutbin/darwin.svc.sh.template

@@ -1,6 +1,7 @@
 #!/bin/bash
 
 SVC_NAME="{{SvcNameVar}}"
+SVC_NAME=${SVC_NAME// /_}
 SVC_DESCRIPTION="{{SvcDescription}}"
 
 user_id=`id -u`

src/Misc/layoutbin/installdependencies.sh

@@ -9,7 +9,7 @@ fi
 
 # Determine OS type 
 # Debian based OS (Debian, Ubuntu, Linux Mint) has /etc/debian_version
-# Fedora based OS (Fedora, Redhat, Centos, Oracle Linux 7) has /etc/redhat-release
+# Fedora based OS (Fedora, Red Hat Enterprise Linux, CentOS, Oracle Linux 7) has /etc/redhat-release
 # SUSE based OS (OpenSUSE, SUSE Enterprise) has ID_LIKE=suse in /etc/os-release
 
 function print_errormessage() 
@@ -49,79 +49,75 @@ then
         cat /etc/debian_version
         echo "------------------------------"
         
-        # prefer apt over apt-get        
-        command -v apt
-        if [ $? -eq 0 ]
-        then
-            apt update && apt install -y liblttng-ust0 libkrb5-3 zlib1g
-            if [ $? -ne 0 ]
-            then
-                echo "'apt' failed with exit code '$?'"
-                print_errormessage
-                exit 1
-            fi
-
-            # libissl version prefer: libssl1.1 -> libssl1.0.2 -> libssl1.0.0
-            apt install -y libssl1.1$ || apt install -y libssl1.0.2$ || apt install -y libssl1.0.0$
-            if [ $? -ne 0 ]
-            then
-                echo "'apt' failed with exit code '$?'"
-                print_errormessage
-                exit 1
-            fi
-
-            # libicu version prefer: libicu63 -> libicu60 -> libicu57 -> libicu55 -> libicu52
-            apt install -y libicu63 || apt install -y libicu60 || apt install -y libicu57 || apt install -y libicu55 || apt install -y libicu52
-            if [ $? -ne 0 ]
-            then
-                echo "'apt' failed with exit code '$?'"
-                print_errormessage
-                exit 1
-            fi
-        else
+        # prefer apt-get over apt
         command -v apt-get
         if [ $? -eq 0 ]
         then
-                apt-get update && apt-get install -y liblttng-ust0 libkrb5-3 zlib1g
-                if [ $? -ne 0 ]
-                then
-                    echo "'apt-get' failed with exit code '$?'"
-                    print_errormessage
-                    exit 1
-                fi
-                
-                # libissl version prefer: libssl1.1 -> libssl1.0.2 -> libssl1.0.0
-                apt-get install -y libssl1.1$ || apt-get install -y libssl1.0.2$ || apt install -y libssl1.0.0$
-                if [ $? -ne 0 ]
-                then
-                    echo "'apt-get' failed with exit code '$?'"
-                    print_errormessage
-                    exit 1
-                fi
-
-                # libicu version prefer: libicu63 -> libicu60 -> libicu57 -> libicu55 -> libicu52
-                apt-get install -y libicu63 || apt-get install -y libicu60 || apt install -y libicu57 || apt install -y libicu55 || apt install -y libicu52
-                if [ $? -ne 0 ]
-                then
-                    echo "'apt-get' failed with exit code '$?'"
-                    print_errormessage
-                    exit 1
-                fi
+            apt_get=apt-get
         else
-                echo "Can not find 'apt' or 'apt-get'"
+            command -v apt
+            if [ $? -eq 0 ]
+            then
+                apt_get=apt
+            else
+                echo "Found neither 'apt-get' nor 'apt'"
                 print_errormessage
                 exit 1
             fi
         fi
+
+        $apt_get update && $apt_get install -y liblttng-ust0 libkrb5-3 zlib1g
+        if [ $? -ne 0 ]
+        then
+            echo "'$apt_get' failed with exit code '$?'"
+            print_errormessage
+            exit 1
+        fi
+
+        apt_get_with_fallbacks() {
+            $apt_get install -y $1
+            fail=$?
+            if [ $fail -eq 0 ]
+            then
+                if [ "${1#"${1%?}"}" = '$' ]; then
+                    dpkg -l "${1%?}" > /dev/null 2> /dev/null
+                    fail=$?
+                fi
+            fi
+            if [ $fail -ne 0 ]
+            then
+                shift
+                if [ -n "$1" ]
+                then
+                    apt_get_with_fallbacks "$@"
+                fi
+            fi
+        }
+
+        apt_get_with_fallbacks libssl1.1$ libssl1.0.2$ libssl1.0.0$
+        if [ $? -ne 0 ]
+        then
+            echo "'$apt_get' failed with exit code '$?'"
+            print_errormessage
+            exit 1
+        fi
+
+        apt_get_with_fallbacks libicu72 libicu71 libicu70 libicu69 libicu68 libicu67 libicu66 libicu65 libicu63 libicu60 libicu57 libicu55 libicu52
+        if [ $? -ne 0 ]
+        then
+            echo "'$apt_get' failed with exit code '$?'"
+            print_errormessage
+            exit 1
+        fi
     elif [ -e /etc/redhat-release ]
     then
         echo "The current OS is Fedora based"
-        echo "--------Redhat Version--------"
+        echo "--Fedora/RHEL/CentOS Version--"
         cat /etc/redhat-release
         echo "------------------------------"
 
         # use dnf on fedora
-        # use yum on centos and redhat
+        # use yum on centos and rhel
         if [ -e /etc/fedora-release ]
         then
             command -v dnf
@@ -191,7 +187,7 @@ then
     redhatRelease=$(</etc/redhat-release)
     if [[ $redhatRelease == "CentOS release 6."* || $redhatRelease == "Red Hat Enterprise Linux Server release 6."* ]]
     then
-        echo "The current OS is Red Hat Enterprise Linux 6 or Centos 6"
+        echo "The current OS is Red Hat Enterprise Linux 6 or CentOS 6"
 
         # Install known dependencies, as a best effort.
         # The remaining dependencies are covered by the GitHub doc that will be shown by `print_rhel6message`

src/Misc/layoutbin/macos-run-invoker.js

@@ -0,0 +1,13 @@
+const { spawn } = require('child_process');
+// argv[0] = node
+// argv[1] = macos-run-invoker.js
+var shell = process.argv[2];
+var args = process.argv.slice(3);
+console.log(`::debug::macos-run-invoker: ${shell}`);
+console.log(`::debug::macos-run-invoker: ${JSON.stringify(args)}`);
+var launch = spawn(shell, args, { stdio: 'inherit' });
+launch.on('exit', function (code) {
+    if (code !== 0) {
+        process.exit(code);
+    }
+});

src/Misc/layoutbin/systemd.svc.sh.template

@@ -1,6 +1,7 @@
 #!/bin/bash
 
 SVC_NAME="{{SvcNameVar}}"
+SVC_NAME=${SVC_NAME// /_}
 SVC_DESCRIPTION="{{SvcDescription}}"
 
 SVC_CMD=$1
@@ -63,8 +64,21 @@ function install()
     sed "s/{{User}}/${run_as_user}/g; s/{{Description}}/$(echo ${SVC_DESCRIPTION} | sed -e 's/[\/&]/\\&/g')/g; s/{{RunnerRoot}}/$(echo ${RUNNER_ROOT} | sed -e 's/[\/&]/\\&/g')/g;" "${TEMPLATE_PATH}" > "${TEMP_PATH}" || failed "failed to create replacement temp file"
     mv "${TEMP_PATH}" "${UNIT_PATH}" || failed "failed to copy unit file"
 
+    # Recent Fedora based Linux (CentOS/Redhat) has SELinux enabled by default
+    # We need to restore security context on the unit file we added otherwise SystemD have no access to it.
+    command -v getenforce > /dev/null
+    if [ $? -eq 0 ]
+    then
+        selinuxEnabled=$(getenforce)
+        if [[ $selinuxEnabled == "Enforcing" ]]
+        then
+            # SELinux is enabled, we will need to Restore SELinux Context for the service file
+            restorecon -r -v "${UNIT_PATH}" || failed "failed to restore SELinux context on ${UNIT_PATH}"
+        fi
+    fi
+    
     # unit file should not be executable and world writable
-    chmod 664 ${UNIT_PATH} || failed "failed to set permissions on ${UNIT_PATH}"
+    chmod 664 "${UNIT_PATH}" || failed "failed to set permissions on ${UNIT_PATH}"
     systemctl daemon-reload || failed "failed to reload daemons"
     
     # Since we started with sudo, runsvc.sh will be owned by root. Change this to current login user.    
@@ -92,25 +106,37 @@ function stop()
 
 function uninstall()
 {
+    if service_exists; then
         stop
         systemctl disable ${SVC_NAME} || failed "failed to disable ${SVC_NAME}"
         rm "${UNIT_PATH}" || failed "failed to delete ${UNIT_PATH}"
+    else
+        echo "Service ${SVC_NAME} is not installed"
+    fi    
     if [ -f "${CONFIG_PATH}" ]; then
       rm "${CONFIG_PATH}" || failed "failed to delete ${CONFIG_PATH}"
     fi
     systemctl daemon-reload || failed "failed to reload daemons"
 }
 
+function service_exists() {
+    if [ -f "${UNIT_PATH}" ]; then
+        return 0
+    else
+        return 1
+    fi
+}
+
 function status()
 {
-    if [ -f "${UNIT_PATH}" ]; then
+    if service_exists; then
         echo
         echo "${UNIT_PATH}"
     else
         echo
         echo "not installed"
         echo
-        return
+        exit 1
     fi
 
     systemctl --no-pager status ${SVC_NAME}

src/Misc/layoutbin/update.sh.template

@@ -18,6 +18,8 @@ downloadrunnerversion=_DOWNLOAD_RUNNER_VERSION_
 logfile="_UPDATE_LOG_"
 restartinteractiverunner=_RESTART_INTERACTIVE_RUNNER_
 
+telemetryfile="$rootfolder/_diag/.telemetry"
+
 # log user who run the script
 date "+[%F %T-%4N] --------whoami--------" >> "$logfile" 2>&1
 whoami >> "$logfile" 2>&1
@@ -28,13 +30,13 @@ date "+[%F %T-%4N] Waiting for $runnerprocessname ($runnerpid) to complete" >> "
 while [ -e /proc/$runnerpid ]
 do
     date "+[%F %T-%4N] Process $runnerpid still running" >> "$logfile" 2>&1
-    ping -c 2 127.0.0.1 >nul
+    sleep 2
 done
 date "+[%F %T-%4N] Process $runnerpid finished running" >> "$logfile" 2>&1
 
 # start re-organize folders
 date "+[%F %T-%4N] Sleep 1 more second to make sure process exited" >> "$logfile" 2>&1
-ping -c 2 127.0.0.1 >nul
+sleep 1
 
 # the folder structure under runner root will be
 # ./bin -> bin.2.100.0 (junction folder)
@@ -118,6 +120,58 @@ then
     exit 1
 fi
 
+# fix upgrade issue with macOS when running as a service
+attemptedtargetedfix=0
+currentplatform=$(uname | awk '{print tolower($0)}')
+if [[ "$currentplatform" == 'darwin'  && restartinteractiverunner -eq 0 ]]; then
+    # We needed a fix for https://github.com/actions/runner/issues/743
+    # We will recreate the ./externals/node12/bin/node of the past runner version that launched the runnerlistener service
+    # Otherwise mac gatekeeper kills the processes we spawn on creation as we are running a process with no backing file
+
+    # We need the pid for the nodejs loop, get that here, its the parent of the runner C# pid
+    # assumption here is only one process is invoking rootfolder/runsvc.sh
+    procgroup=$(ps x -o pgid,command | grep "$rootfolder/runsvc.sh" | grep -v grep | awk '{print $1}')
+    if [[ $? -eq 0 && -n "$procgroup" ]]
+    then
+        # inspect the open file handles to find the node process
+        # we can't actually inspect the process using ps because it uses relative paths and doesn't follow symlinks
+        path=$(lsof -a -g "$procgroup" -F n | grep node12/bin/node | grep externals | tail -1 | cut -c2-)
+        if [[ $? -eq 0 && -n "$path" ]]
+        then
+            # trim the last 5 characters of the path '/node'
+            trimmedpath=$(dirname "$path")
+            if [[ $? -eq 0 && -n "$trimmedpath" ]]
+            then
+                attemptedtargetedfix=1
+                # Create the path if it does not exist
+                if [[ ! -e "$path" ]]
+                then
+                    date "+[%F %T-%4N] Creating fallback node at path $path" >> "$logfile" 2>&1
+                    mkdir -p "$trimmedpath"
+                    cp "$rootfolder/externals/node12/bin/node" "$path"
+                else
+                    date "+[%F %T-%4N] Path for fallback node exists, skipping creating $path" >> "$logfile" 2>&1
+                fi
+            else
+                date "+[%F %T-%4N] DarwinRunnerUpgrade: Failed to trim runner path. TrimmedPath: $trimmedpath, path: $path, pgid: $procgroup, root: $rootfolder" >> "$logfile" 2>&1
+                date "+[%F %T-%4N] DarwinRunnerUpgrade: Failed to trim runner path. TrimmedPath: $trimmedpath, path: $path, pgid: $procgroup, root: $rootfolder" >> "$telemetryfile" 2>&1
+            fi
+        else
+            date "+[%F %T-%4N] DarwinRunnerUpgrade: Failed to find runner path. Path: $path, pgid: $procgroup, root: $rootfolder" >> "$logfile" 2>&1
+            date "+[%F %T-%4N] DarwinRunnerUpgrade: Failed to find runner path. Path: $path, pgid: $procgroup, root: $rootfolder" >> "$telemetryfile" 2>&1
+        fi
+    else
+        runproc=$(ps x -o pgid,command | grep "run.sh" | grep -v grep | awk '{print $1}')
+        if [[ $? -eq 0 && -n "$runproc" ]]
+        then
+            date "+[%F %T-%4N] Running as ephemeral using run.sh, no need to recreate node folder" >> "$logfile" 2>&1
+        else
+            date "+[%F %T-%4N] DarwinRunnerUpgrade: Failed to find runner pgid. pgid: $procgroup, root: $rootfolder" >> "$logfile" 2>&1
+            date "+[%F %T-%4N] DarwinRunnerUpgrade: Failed to find runner pgid. pgid: $procgroup, root: $rootfolder" >> "$telemetryfile" 2>&1
+        fi
+    fi
+fi
+
 date "+[%F %T-%4N] Update succeed" >> "$logfile"
 
 # rename the update log file with %logfile%.succeed/.failed/succeedneedrestart

src/Misc/layoutroot/config.sh

@@ -3,7 +3,7 @@
 user_id=`id -u`
 
 # we want to snapshot the environment of the config user
-if [ $user_id -eq 0 -a -z "$AGENT_ALLOW_RUNASROOT" ]; then
+if [ $user_id -eq 0 -a -z "$RUNNER_ALLOW_RUNASROOT" ]; then
     echo "Must not run with sudo"
     exit 1
 fi
@@ -18,24 +18,26 @@ then
         exit 1
     fi
 
+    message="Execute sudo ./bin/installdependencies.sh to install any missing Dotnet Core 3.0 dependencies."
+
     ldd ./bin/libcoreclr.so | grep 'not found'
     if [ $? -eq 0 ]; then
         echo "Dependencies is missing for Dotnet Core 3.0"
-        echo "Execute ./bin/installdependencies.sh to install any missing Dotnet Core 3.0 dependencies."
+        echo $message
         exit 1
     fi
 
     ldd ./bin/System.Security.Cryptography.Native.OpenSsl.so | grep 'not found'
     if [ $? -eq 0 ]; then
         echo "Dependencies is missing for Dotnet Core 3.0"
-        echo "Execute ./bin/installdependencies.sh to install any missing Dotnet Core 3.0 dependencies."
+        echo $message
         exit 1
     fi
 
     ldd ./bin/System.IO.Compression.Native.so | grep 'not found'
     if [ $? -eq 0 ]; then
         echo "Dependencies is missing for Dotnet Core 3.0"
-        echo "Execute ./bin/installdependencies.sh to install any missing Dotnet Core 3.0 dependencies."
+        echo $message
         exit 1
     fi
 
@@ -50,10 +52,10 @@ then
     fi
 
     libpath=${LD_LIBRARY_PATH:-}
-    $LDCONFIG_COMMAND -NXv ${libpath//:/} 2>&1 | grep libicu >/dev/null 2>&1
+    $LDCONFIG_COMMAND -NXv ${libpath//:/ } 2>&1 | grep libicu >/dev/null 2>&1
     if [ $? -ne 0 ]; then
         echo "Libicu's dependencies is missing for Dotnet Core 3.0"
-        echo "Execute ./bin/installdependencies.sh to install any missing Dotnet Core 3.0 dependencies."
+        echo $message
         exit 1
     fi
 fi
@@ -67,7 +69,7 @@ while [ -h "$SOURCE" ]; do # resolve $SOURCE until the file is no longer a symli
   [[ $SOURCE != /* ]] && SOURCE="$DIR/$SOURCE" # if $SOURCE was a relative symlink, we need to resolve it relative to the path where the symlink file was located
 done
 DIR="$( cd -P "$( dirname "$SOURCE" )" && pwd )"
-cd $DIR
+cd "$DIR"
 
 source ./env.sh
 

src/Misc/layoutroot/env.sh

@@ -6,6 +6,7 @@ varCheckList=(
     'ANT_HOME' 
     'M2_HOME' 
     'ANDROID_HOME' 
+    'ANDROID_SDK_ROOT'
     'GRADLE_HOME' 
     'NVM_BIN' 
     'NVM_PATH'

src/Misc/layoutroot/run.sh

@@ -2,7 +2,7 @@
 
 # Validate not sudo
 user_id=`id -u`
-if [ $user_id -eq 0 -a -z "$AGENT_ALLOW_RUNASROOT" ]; then
+if [ $user_id -eq 0 -a -z "$RUNNER_ALLOW_RUNASROOT" ]; then
     echo "Must not run interactively with sudo"
     exit 1
 fi
@@ -26,24 +26,37 @@ if [[ "$1" == "localRun" ]]; then
 else
     "$DIR"/bin/Runner.Listener run $*
 
-# Return code 4 means the run once agent received an update message.
-# Sleep 5 seconds to wait for the update process finish and run the agent again.
+# Return code 3 means the run once runner received an update message.
+# Sleep 5 seconds to wait for the update process finish
     returnCode=$?
-    if [[ $returnCode == 4 ]]; then
+    if [[ $returnCode == 3 ]]; then
         if [ ! -x "$(command -v sleep)" ]; then
             if [ ! -x "$(command -v ping)" ]; then
                 COUNT="0"
                 while [[ $COUNT != 5000 ]]; do
-                    echo "SLEEP" >nul
+                    echo "SLEEP" > /dev/null
                     COUNT=$[$COUNT+1]
                 done
             else
-                ping -n 5 127.0.0.1 >nul
+                ping -c 5 127.0.0.1 > /dev/null
             fi
         else
-            sleep 5 >nul
+            sleep 5
+        fi
+    elif [[ $returnCode == 4 ]]; then
+        if [ ! -x "$(command -v sleep)" ]; then
+            if [ ! -x "$(command -v ping)" ]; then
+                COUNT="0"
+                while [[ $COUNT != 5000 ]]; do
+                    echo "SLEEP" > /dev/null
+                    COUNT=$[$COUNT+1]
+                done
+            else
+                ping -c 5 127.0.0.1 > /dev/null
+            fi
+        else
+            sleep 5
         fi
-        
         "$DIR"/bin/Runner.Listener run $*
     else
         exit $returnCode

src/NuGet.Config

@@ -3,8 +3,6 @@
   <packageSources>
     <!--To inherit the global NuGet package sources remove the <clear/> line below -->
     <clear />
-    <add key="dotnet-core" value="https://www.myget.org/F/dotnet-core/api/v3/index.json" />
-    <add key="dotnet-buildtools" value="https://www.myget.org/F/dotnet-buildtools/api/v3/index.json" />    
     <add key="api.nuget.org" value="https://api.nuget.org/v3/index.json" />
   </packageSources>
 </configuration>

src/Runner.Common/ActionCommand.cs

@@ -9,26 +9,27 @@ namespace GitHub.Runner.Common
     {
         private static readonly EscapeMapping[] _escapeMappings = new[]
         {
-            new EscapeMapping(token: "%", replacement: "%25"),
             new EscapeMapping(token: ";", replacement: "%3B"),
             new EscapeMapping(token: "\r", replacement: "%0D"),
             new EscapeMapping(token: "\n", replacement: "%0A"),
             new EscapeMapping(token: "]", replacement: "%5D"),
+            new EscapeMapping(token: "%", replacement: "%25"),
         };
 
         private static readonly EscapeMapping[] _escapeDataMappings = new[]
         {
             new EscapeMapping(token: "\r", replacement: "%0D"),
             new EscapeMapping(token: "\n", replacement: "%0A"),
+            new EscapeMapping(token: "%", replacement: "%25"),
         };
 
         private static readonly EscapeMapping[] _escapePropertyMappings = new[]
         {
-            new EscapeMapping(token: "%", replacement: "%25"),
             new EscapeMapping(token: "\r", replacement: "%0D"),
             new EscapeMapping(token: "\n", replacement: "%0A"),
             new EscapeMapping(token: ":", replacement: "%3A"),
             new EscapeMapping(token: ",", replacement: "%2C"),
+            new EscapeMapping(token: "%", replacement: "%25"),
         };
 
         private readonly Dictionary<string, string> _properties = new Dictionary<string, string>(StringComparer.OrdinalIgnoreCase);

src/Runner.Common/AsyncManualResetEvent.cs

@@ -1,33 +0,0 @@
-using System.Threading;
-using System.Threading.Tasks;
-
-namespace GitHub.Runner.Common
-{
-    //Stephen Toub: http://blogs.msdn.com/b/pfxteam/archive/2012/02/11/10266920.aspx
-    
-    public class AsyncManualResetEvent
-    {
-        private volatile TaskCompletionSource<bool> m_tcs = new TaskCompletionSource<bool>();
-
-        public Task WaitAsync() { return m_tcs.Task; }
-
-        public void Set()
-        {
-            var tcs = m_tcs;
-            Task.Factory.StartNew(s => ((TaskCompletionSource<bool>)s).TrySetResult(true),
-                tcs, CancellationToken.None, TaskCreationOptions.PreferFairness, TaskScheduler.Default);
-            tcs.Task.Wait();
-        }
-
-        public void Reset()
-        {
-            while (true)
-            {
-                var tcs = m_tcs;
-                if (!tcs.Task.IsCompleted ||
-                    Interlocked.CompareExchange(ref m_tcs, new TaskCompletionSource<bool>(), tcs) == tcs)
-                    return;
-            }
-        }
-    }
-}

src/Runner.Common/ConfigurationStore.cs

@@ -15,6 +15,9 @@ namespace GitHub.Runner.Common
     [DataContract]
     public sealed class RunnerSettings
     {
+        [DataMember(Name = "IsHostedServer", EmitDefaultValue = false)]
+        private bool? _isHostedServer;
+
         [DataMember(EmitDefaultValue = false)]
         public int AgentId { get; set; }
 
@@ -30,6 +33,9 @@ namespace GitHub.Runner.Common
         [DataMember(EmitDefaultValue = false)]
         public string PoolName { get; set; }
 
+        [DataMember(EmitDefaultValue = false)]
+        public bool Ephemeral { get; set; }
+
         [DataMember(EmitDefaultValue = false)]
         public string ServerUrl { get; set; }
 
@@ -42,6 +48,21 @@ namespace GitHub.Runner.Common
         [DataMember(EmitDefaultValue = false)]
         public string MonitorSocketAddress { get; set; }
 
+        [IgnoreDataMember]
+        public bool IsHostedServer
+        {
+            get
+            {
+                // Old runners do not have this property. Hosted runners likely don't have this property either.
+                return _isHostedServer ?? true;
+            }
+
+            set
+            {
+                _isHostedServer = value;
+            }
+        }
+
         /// <summary>
         // Computed property for convenience. Can either return:
         // 1. If runner was configured at the repo level, returns something like: "myorg/myrepo"
@@ -69,15 +90,15 @@ namespace GitHub.Runner.Common
                 return repoOrOrgName;
             }
         }
-    }
 
-    [DataContract]
-    public sealed class RunnerRuntimeOptions
+        [OnSerializing]
+        private void OnSerializing(StreamingContext context)
         {
-#if OS_WINDOWS
-        [DataMember(EmitDefaultValue = false)]
-        public bool GitUseSecureChannel { get; set; }
-#endif
+            if (_isHostedServer.HasValue && _isHostedServer.Value)
+            {
+                _isHostedServer = null;
+            }
+        }
     }
 
     [ServiceLocator(Default = typeof(ConfigurationStore))]
@@ -87,14 +108,13 @@ namespace GitHub.Runner.Common
         bool IsServiceConfigured();
         bool HasCredentials();
         CredentialData GetCredentials();
+        CredentialData GetMigratedCredentials();
         RunnerSettings GetSettings();
         void SaveCredential(CredentialData credential);
         void SaveSettings(RunnerSettings settings);
         void DeleteCredential();
+        void DeleteMigratedCredential();
         void DeleteSettings();
-        RunnerRuntimeOptions GetRunnerRuntimeOptions();
-        void SaveRunnerRuntimeOptions(RunnerRuntimeOptions options);
-        void DeleteRunnerRuntimeOptions();
     }
 
     public sealed class ConfigurationStore : RunnerService, IConfigurationStore
@@ -102,12 +122,12 @@ namespace GitHub.Runner.Common
         private string _binPath;
         private string _configFilePath;
         private string _credFilePath;
+        private string _migratedCredFilePath;
         private string _serviceConfigFilePath;
-        private string _runtimeOptionsFilePath;
 
         private CredentialData _creds;
+        private CredentialData _migratedCreds;
         private RunnerSettings _settings;
-        private RunnerRuntimeOptions _runtimeOptions;
 
         public override void Initialize(IHostContext hostContext)
         {
@@ -128,20 +148,19 @@ namespace GitHub.Runner.Common
             _credFilePath = hostContext.GetConfigFile(WellKnownConfigFile.Credentials);
             Trace.Info("CredFilePath: {0}", _credFilePath);
 
+            _migratedCredFilePath = hostContext.GetConfigFile(WellKnownConfigFile.MigratedCredentials);
+            Trace.Info("MigratedCredFilePath: {0}", _migratedCredFilePath);
+
             _serviceConfigFilePath = hostContext.GetConfigFile(WellKnownConfigFile.Service);
             Trace.Info("ServiceConfigFilePath: {0}", _serviceConfigFilePath);
-
-            _runtimeOptionsFilePath = hostContext.GetConfigFile(WellKnownConfigFile.Options);
-            Trace.Info("RuntimeOptionsFilePath: {0}", _runtimeOptionsFilePath);
         }
 
         public string RootFolder { get; private set; }
 
         public bool HasCredentials()
         {
-            ArgUtil.Equal(RunMode.Normal, HostContext.RunMode, nameof(HostContext.RunMode));
             Trace.Info("HasCredentials()");
-            bool credsStored = (new FileInfo(_credFilePath)).Exists;
+            bool credsStored = (new FileInfo(_credFilePath)).Exists || (new FileInfo(_migratedCredFilePath)).Exists;
             Trace.Info("stored {0}", credsStored);
             return credsStored;
         }
@@ -149,14 +168,13 @@ namespace GitHub.Runner.Common
         public bool IsConfigured()
         {
             Trace.Info("IsConfigured()");
-            bool configured = HostContext.RunMode == RunMode.Local || (new FileInfo(_configFilePath)).Exists;
+            bool configured = new FileInfo(_configFilePath).Exists;
             Trace.Info("IsConfigured: {0}", configured);
             return configured;
         }
 
         public bool IsServiceConfigured()
         {
-            ArgUtil.Equal(RunMode.Normal, HostContext.RunMode, nameof(HostContext.RunMode));
             Trace.Info("IsServiceConfigured()");
             bool serviceConfigured = (new FileInfo(_serviceConfigFilePath)).Exists;
             Trace.Info($"IsServiceConfigured: {serviceConfigured}");
@@ -165,7 +183,6 @@ namespace GitHub.Runner.Common
 
         public CredentialData GetCredentials()
         {
-            ArgUtil.Equal(RunMode.Normal, HostContext.RunMode, nameof(HostContext.RunMode));
             if (_creds == null)
             {
                 _creds = IOUtil.LoadObject<CredentialData>(_credFilePath);
@@ -174,6 +191,16 @@ namespace GitHub.Runner.Common
             return _creds;
         }
 
+        public CredentialData GetMigratedCredentials()
+        {
+            if (_migratedCreds == null && File.Exists(_migratedCredFilePath))
+            {
+                _migratedCreds = IOUtil.LoadObject<CredentialData>(_migratedCredFilePath);
+            }
+
+            return _migratedCreds;
+        }
+
         public RunnerSettings GetSettings()
         {
             if (_settings == null)
@@ -195,7 +222,6 @@ namespace GitHub.Runner.Common
 
         public void SaveCredential(CredentialData credential)
         {
-            ArgUtil.Equal(RunMode.Normal, HostContext.RunMode, nameof(HostContext.RunMode));
             Trace.Info("Saving {0} credential @ {1}", credential.Scheme, _credFilePath);
             if (File.Exists(_credFilePath))
             {
@@ -211,7 +237,6 @@ namespace GitHub.Runner.Common
 
         public void SaveSettings(RunnerSettings settings)
         {
-            ArgUtil.Equal(RunMode.Normal, HostContext.RunMode, nameof(HostContext.RunMode));
             Trace.Info("Saving runner settings.");
             if (File.Exists(_configFilePath))
             {
@@ -227,44 +252,18 @@ namespace GitHub.Runner.Common
 
         public void DeleteCredential()
         {
-            ArgUtil.Equal(RunMode.Normal, HostContext.RunMode, nameof(HostContext.RunMode));
             IOUtil.Delete(_credFilePath, default(CancellationToken));
+            IOUtil.Delete(_migratedCredFilePath, default(CancellationToken));
+        }
+
+        public void DeleteMigratedCredential()
+        {
+            IOUtil.Delete(_migratedCredFilePath, default(CancellationToken));
         }
 
         public void DeleteSettings()
         {
-            ArgUtil.Equal(RunMode.Normal, HostContext.RunMode, nameof(HostContext.RunMode));
             IOUtil.Delete(_configFilePath, default(CancellationToken));
         }
-
-        public RunnerRuntimeOptions GetRunnerRuntimeOptions()
-        {
-            if (_runtimeOptions == null && File.Exists(_runtimeOptionsFilePath))
-            {
-                _runtimeOptions = IOUtil.LoadObject<RunnerRuntimeOptions>(_runtimeOptionsFilePath);
-            }
-
-            return _runtimeOptions;
-        }
-
-        public void SaveRunnerRuntimeOptions(RunnerRuntimeOptions options)
-        {
-            Trace.Info("Saving runtime options.");
-            if (File.Exists(_runtimeOptionsFilePath))
-            {
-                // Delete existing runtime options file first, since the file is hidden and not able to overwrite.
-                Trace.Info("Delete exist runtime options file.");
-                IOUtil.DeleteFile(_runtimeOptionsFilePath);
-            }
-
-            IOUtil.SaveObject(options, _runtimeOptionsFilePath);
-            Trace.Info("Options Saved.");
-            File.SetAttributes(_runtimeOptionsFilePath, File.GetAttributes(_runtimeOptionsFilePath) | FileAttributes.Hidden);
-        }
-
-        public void DeleteRunnerRuntimeOptions()
-        {
-            IOUtil.Delete(_runtimeOptionsFilePath, default(CancellationToken));
-        }
     }
 }

src/Runner.Common/Constants.cs

@@ -2,12 +2,6 @@
 
 namespace GitHub.Runner.Common
 {
-    public enum RunMode
-    {
-        Normal, // Keep "Normal" first (default value).
-        Local,
-    }
-
     public enum WellKnownDirectory
     {
         Bin,
@@ -25,11 +19,14 @@ namespace GitHub.Runner.Common
     {
         Runner,
         Credentials,
+        MigratedCredentials,
         RSACredentials,
         Service,
         CredentialStore,
         Certificates,
         Options,
+        SetupInfo,
+        Telemetry
     }
 
     public static class Constants
@@ -45,6 +42,8 @@ namespace GitHub.Runner.Common
         public static string PluginTracePrefix = "##[plugin.trace]";
         public static readonly int RunnerDownloadRetryMaxAttempts = 3;
 
+        public static readonly int CompositeActionsMaxDepth = 9;
+
         // This enum is embedded within the Constants class to make it easier to reference and avoid
         // ambiguous type reference with System.Runtime.InteropServices.OSPlatform and System.Runtime.InteropServices.Architecture
         public enum OSPlatform
@@ -91,13 +90,10 @@ namespace GitHub.Runner.Common
                 public static class Args
                 {
                     public static readonly string Auth = "auth";
+                    public static readonly string Labels = "labels";
                     public static readonly string MonitorSocketAddress = "monitorsocketaddress";
                     public static readonly string Name = "name";
-                    public static readonly string Pool = "pool";
-                    public static readonly string SslCACert = "sslcacert";
-                    public static readonly string SslClientCert = "sslclientcert";
-                    public static readonly string SslClientCertKey = "sslclientcertkey";
-                    public static readonly string SslClientCertArchive = "sslclientcertarchive";
+                    public static readonly string RunnerGroup = "runnergroup";
                     public static readonly string StartupType = "startuptype";
                     public static readonly string Url = "url";
                     public static readonly string UserName = "username";
@@ -105,14 +101,12 @@ namespace GitHub.Runner.Common
                     public static readonly string Work = "work";
 
                     // Secret args. Must be added to the "Secrets" getter as well.
-                    public static readonly string Password = "password";
-                    public static readonly string SslClientCertPassword = "sslclientcertpassword";
                     public static readonly string Token = "token";
+                    public static readonly string PAT = "pat";
                     public static readonly string WindowsLogonPassword = "windowslogonpassword";
                     public static string[] Secrets => new[]
                     {
-                        Password,
-                        SslClientCertPassword,
+                        PAT,
                         Token,
                         WindowsLogonPassword,
                     };
@@ -130,14 +124,13 @@ namespace GitHub.Runner.Common
                 //validFlags array as well present in the CommandSettings.cs
                 public static class Flags
                 {
+                    public static readonly string Check = "check";
                     public static readonly string Commit = "commit";
-                    public static readonly string GitUseSChannel = "gituseschannel";
+                    public static readonly string Ephemeral = "ephemeral";
                     public static readonly string Help = "help";
                     public static readonly string Replace = "replace";
-                    public static readonly string LaunchBrowser = "launchbrowser";
-                    public static readonly string Once = "once";
+                    public static readonly string Once = "once"; // Keep this around since customers still relies on it
                     public static readonly string RunAsService = "runasservice";
-                    public static readonly string SslSkipCertValidation = "sslskipcertvalidation";
                     public static readonly string Unattended = "unattended";
                     public static readonly string Version = "version";
                 }
@@ -151,6 +144,24 @@ namespace GitHub.Runner.Common
                 public const int RunnerUpdating = 3;
                 public const int RunOnceRunnerUpdating = 4;
             }
+
+            public static class Features
+            {
+                public static readonly string DiskSpaceWarning = "runner.diskspace.warning";
+            }
+
+            public static readonly string InternalTelemetryIssueDataKey = "_internal_telemetry";
+            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 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/en/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`.";
+        }
+
+        public static class RunnerEvent
+        {
+            public static readonly string Register = "register";
+            public static readonly string Remove = "remove";
         }
 
         public static class Pipeline
@@ -164,9 +175,7 @@ namespace GitHub.Runner.Common
 
         public static class Configuration
         {
-            public static readonly string AAD = "AAD";
             public static readonly string OAuthAccessToken = "OAuthAccessToken";
-            public static readonly string PAT = "PAT";
             public static readonly string OAuth = "OAuth";
         }
 
@@ -181,7 +190,8 @@ namespace GitHub.Runner.Common
         public static class Path
         {
             public static readonly string ActionsDirectory = "_actions";
-            public static readonly string ActionManifestFile = "action.yml";
+            public static readonly string ActionManifestYmlFile = "action.yml";
+            public static readonly string ActionManifestYamlFile = "action.yaml";
             public static readonly string BinDirectory = "bin";
             public static readonly string DiagDirectory = "_diag";
             public static readonly string ExternalsDirectory = "externals";
@@ -204,10 +214,17 @@ namespace GitHub.Runner.Common
                 //
                 // Keep alphabetical
                 //
+                public static readonly string AllowUnsupportedCommands = "ACTIONS_ALLOW_UNSECURE_COMMANDS";
+                public static readonly string AllowUnsupportedStopCommandTokens = "ACTIONS_ALLOW_UNSECURE_STOPCOMMAND_TOKENS";
                 public static readonly string RunnerDebug = "ACTIONS_RUNNER_DEBUG";
                 public static readonly string StepDebug = "ACTIONS_STEP_DEBUG";
             }
 
+            public static class Agent
+            {
+                public static readonly string ToolsDirectory = "agent.ToolsDirectory";
+            }
+
             public static class System
             {
                 //

src/Runner.Common/ExtensionManager.cs

@@ -51,11 +51,22 @@ namespace GitHub.Runner.Common
                     Add<T>(extensions, "GitHub.Runner.Worker.RemoveMatcherCommandExtension, Runner.Worker");
                     Add<T>(extensions, "GitHub.Runner.Worker.WarningCommandExtension, Runner.Worker");
                     Add<T>(extensions, "GitHub.Runner.Worker.ErrorCommandExtension, Runner.Worker");
+                    Add<T>(extensions, "GitHub.Runner.Worker.NoticeCommandExtension, Runner.Worker");
                     Add<T>(extensions, "GitHub.Runner.Worker.DebugCommandExtension, Runner.Worker");
                     Add<T>(extensions, "GitHub.Runner.Worker.GroupCommandExtension, Runner.Worker");
                     Add<T>(extensions, "GitHub.Runner.Worker.EndGroupCommandExtension, Runner.Worker");
                     Add<T>(extensions, "GitHub.Runner.Worker.EchoCommandExtension, Runner.Worker");
                     break;
+                case "GitHub.Runner.Worker.IFileCommandExtension":
+                    Add<T>(extensions, "GitHub.Runner.Worker.AddPathFileCommand, Runner.Worker");
+                    Add<T>(extensions, "GitHub.Runner.Worker.SetEnvFileCommand, Runner.Worker");
+                    break;
+                case "GitHub.Runner.Listener.Check.ICheckExtension":
+                    Add<T>(extensions, "GitHub.Runner.Listener.Check.InternetCheck, Runner.Listener");
+                    Add<T>(extensions, "GitHub.Runner.Listener.Check.ActionsCheck, Runner.Listener");
+                    Add<T>(extensions, "GitHub.Runner.Listener.Check.GitCheck, Runner.Listener");
+                    Add<T>(extensions, "GitHub.Runner.Listener.Check.NodeJsCheck, Runner.Listener");
+                    break;
                 default:
                     // This should never happen.
                     throw new NotSupportedException($"Unexpected extension type: '{typeof(T).FullName}'");

src/Runner.Common/HostContext.cs

@@ -1,31 +1,29 @@
-using GitHub.Runner.Common.Util;
-using System;
+using System;
 using System.Collections.Concurrent;
 using System.Collections.Generic;
+using System.Diagnostics;
+using System.Diagnostics.Tracing;
 using System.Globalization;
 using System.IO;
 using System.Linq;
+using System.Net.Http;
+using System.Net.Http.Headers;
 using System.Reflection;
 using System.Runtime.Loader;
 using System.Threading;
 using System.Threading.Tasks;
-using System.Diagnostics;
-using System.Net.Http;
-using System.Diagnostics.Tracing;
 using GitHub.DistributedTask.Logging;
-using System.Net.Http.Headers;
 using GitHub.Runner.Sdk;
 
 namespace GitHub.Runner.Common
 {
     public interface IHostContext : IDisposable
     {
-        RunMode RunMode { get; set; }
         StartupType StartupType { get; set; }
         CancellationToken RunnerShutdownToken { get; }
         ShutdownReason RunnerShutdownReason { get; }
         ISecretMasker SecretMasker { get; }
-        ProductInfoHeaderValue UserAgent { get; }
+        List<ProductInfoHeaderValue> UserAgents { get; }
         RunnerWebProxy WebProxy { get; }
         string GetDirectory(WellKnownDirectory directory);
         string GetConfigFile(WellKnownConfigFile configFile);
@@ -55,13 +53,12 @@ namespace GitHub.Runner.Common
         private readonly ConcurrentDictionary<Type, object> _serviceInstances = new ConcurrentDictionary<Type, object>();
         private readonly ConcurrentDictionary<Type, Type> _serviceTypes = new ConcurrentDictionary<Type, Type>();
         private readonly ISecretMasker _secretMasker = new SecretMasker();
-        private readonly ProductInfoHeaderValue _userAgent = new ProductInfoHeaderValue($"GitHubActionsRunner-{BuildConstants.RunnerPackage.PackageName}", BuildConstants.RunnerPackage.Version);
+        private readonly List<ProductInfoHeaderValue> _userAgents = new List<ProductInfoHeaderValue>() { new ProductInfoHeaderValue($"GitHubActionsRunner-{BuildConstants.RunnerPackage.PackageName}", BuildConstants.RunnerPackage.Version) };
         private CancellationTokenSource _runnerShutdownTokenSource = new CancellationTokenSource();
         private object _perfLock = new object();
-        private RunMode _runMode = RunMode.Normal;
         private Tracing _trace;
-        private Tracing _vssTrace;
-        private Tracing _httpTrace;
+        private Tracing _actionsHttpTrace;
+        private Tracing _netcoreHttpTrace;
         private ITraceManager _traceManager;
         private AssemblyLoadContext _loadContext;
         private IDisposable _httpTraceSubscription;
@@ -74,7 +71,7 @@ namespace GitHub.Runner.Common
         public CancellationToken RunnerShutdownToken => _runnerShutdownTokenSource.Token;
         public ShutdownReason RunnerShutdownReason { get; private set; }
         public ISecretMasker SecretMasker => _secretMasker;
-        public ProductInfoHeaderValue UserAgent => _userAgent;
+        public List<ProductInfoHeaderValue> UserAgents => _userAgents;
         public RunnerWebProxy WebProxy => _webProxy;
         public HostContext(string hostType, string logFile = null)
         {
@@ -87,10 +84,14 @@ namespace GitHub.Runner.Common
             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);
 
             // Create the trace manager.
             if (string.IsNullOrEmpty(logFile))
@@ -119,8 +120,7 @@ namespace GitHub.Runner.Common
             }
 
             _trace = GetTrace(nameof(HostContext));
-            _vssTrace = GetTrace("GitHubActionsRunner");  // VisualStudioService
-
+            _actionsHttpTrace = GetTrace("GitHubActionsService");
             // Enable Http trace
             bool enableHttpTrace;
             if (bool.TryParse(Environment.GetEnvironmentVariable("GITHUB_ACTIONS_RUNNER_HTTPTRACE"), out enableHttpTrace) && enableHttpTrace)
@@ -132,7 +132,7 @@ namespace GitHub.Runner.Common
                 _trace.Warning("**                                                                                     **");
                 _trace.Warning("*****************************************************************************************");
 
-                _httpTrace = GetTrace("HttpTrace");
+                _netcoreHttpTrace = GetTrace("HttpTrace");
                 _diagListenerSubscription = DiagnosticListener.AllListeners.Subscribe(this);
             }
 
@@ -192,19 +192,24 @@ namespace GitHub.Runner.Common
             {
                 _trace.Info($"No proxy settings were found based on environmental variables (http_proxy/https_proxy/HTTP_PROXY/HTTPS_PROXY)");
             }
+
+            var credFile = GetConfigFile(WellKnownConfigFile.Credentials);
+            if (File.Exists(credFile))
+            {
+                var credData = IOUtil.LoadObject<CredentialData>(credFile);
+                if (credData != null &&
+                    credData.Data.TryGetValue("clientId", out var clientId))
+                {
+                    _userAgents.Add(new ProductInfoHeaderValue("ClientId", clientId));
+                }
             }
 
-        public RunMode RunMode
+            var runnerFile = GetConfigFile(WellKnownConfigFile.Runner);
+            if (File.Exists(runnerFile))
             {
-            get
-            {
-                return _runMode;
-            }
-
-            set
-            {
-                _trace.Info($"Set run mode: {value}");
-                _runMode = value;
+                var runnerSettings = IOUtil.LoadObject<RunnerSettings>(runnerFile);
+                _userAgents.Add(new ProductInfoHeaderValue("RunnerId", runnerSettings.AgentId.ToString(CultureInfo.InvariantCulture)));
+                _userAgents.Add(new ProductInfoHeaderValue("GroupId", runnerSettings.PoolId.ToString(CultureInfo.InvariantCulture)));
             }
         }
 
@@ -246,7 +251,8 @@ namespace GitHub.Runner.Common
                     break;
 
                 case WellKnownDirectory.Tools:
-                    path = Environment.GetEnvironmentVariable("RUNNER_TOOL_CACHE");
+                    // TODO: Coallesce to just check RUNNER_TOOL_CACHE when images stabilize
+                    path = Environment.GetEnvironmentVariable("RUNNER_TOOL_CACHE") ?? Environment.GetEnvironmentVariable("RUNNER_TOOLSDIRECTORY") ?? Environment.GetEnvironmentVariable("AGENT_TOOLSDIRECTORY") ?? Environment.GetEnvironmentVariable(Constants.Variables.Agent.ToolsDirectory);
 
                     if (string.IsNullOrEmpty(path))
                     {
@@ -297,6 +303,12 @@ namespace GitHub.Runner.Common
                         ".credentials");
                     break;
 
+                case WellKnownConfigFile.MigratedCredentials:
+                    path = Path.Combine(
+                        GetDirectory(WellKnownDirectory.Root),
+                        ".credentials_migrated");
+                    break;
+
                 case WellKnownConfigFile.RSACredentials:
                     path = Path.Combine(
                         GetDirectory(WellKnownDirectory.Root),
@@ -332,6 +344,19 @@ namespace GitHub.Runner.Common
                         GetDirectory(WellKnownDirectory.Root),
                         ".options");
                     break;
+
+                case WellKnownConfigFile.SetupInfo:
+                    path = Path.Combine(
+                        GetDirectory(WellKnownDirectory.Root),
+                        ".setup_info");
+                    break;
+                
+                case WellKnownConfigFile.Telemetry:
+                    path = Path.Combine(
+                        GetDirectory(WellKnownDirectory.Diag),
+                        ".telemetry");
+                    break;
+
                 default:
                     throw new NotSupportedException($"Unexpected well known config file: '{configFile}'");
             }
@@ -494,12 +519,12 @@ namespace GitHub.Runner.Common
 
         void IObserver<DiagnosticListener>.OnCompleted()
         {
-            _httpTrace.Info("DiagListeners finished transmitting data.");
+            _netcoreHttpTrace.Info("DiagListeners finished transmitting data.");
         }
 
         void IObserver<DiagnosticListener>.OnError(Exception error)
         {
-            _httpTrace.Error(error);
+            _netcoreHttpTrace.Error(error);
         }
 
         void IObserver<DiagnosticListener>.OnNext(DiagnosticListener listener)
@@ -512,22 +537,22 @@ namespace GitHub.Runner.Common
 
         void IObserver<KeyValuePair<string, object>>.OnCompleted()
         {
-            _httpTrace.Info("HttpHandlerDiagnosticListener finished transmitting data.");
+            _netcoreHttpTrace.Info("HttpHandlerDiagnosticListener finished transmitting data.");
         }
 
         void IObserver<KeyValuePair<string, object>>.OnError(Exception error)
         {
-            _httpTrace.Error(error);
+            _netcoreHttpTrace.Error(error);
         }
 
         void IObserver<KeyValuePair<string, object>>.OnNext(KeyValuePair<string, object> value)
         {
-            _httpTrace.Info($"Trace {value.Key} event:{Environment.NewLine}{value.Value.ToString()}");
+            _netcoreHttpTrace.Info($"Trace {value.Key} event:{Environment.NewLine}{value.Value.ToString()}");
         }
 
         protected override void OnEventSourceCreated(EventSource source)
         {
-            if (source.Name.Equals("Microsoft-VSS-Http"))
+            if (source.Name.Equals("GitHub-Actions-Http"))
             {
                 EnableEvents(source, EventLevel.Verbose);
             }
@@ -567,24 +592,24 @@ namespace GitHub.Runner.Common
                 {
                     case EventLevel.Critical:
                     case EventLevel.Error:
-                        _vssTrace.Error(message);
+                        _actionsHttpTrace.Error(message);
                         break;
                     case EventLevel.Warning:
-                        _vssTrace.Warning(message);
+                        _actionsHttpTrace.Warning(message);
                         break;
                     case EventLevel.Informational:
-                        _vssTrace.Info(message);
+                        _actionsHttpTrace.Info(message);
                         break;
                     default:
-                        _vssTrace.Verbose(message);
+                        _actionsHttpTrace.Verbose(message);
                         break;
                 }
             }
             catch (Exception ex)
             {
-                _vssTrace.Error(ex);
-                _vssTrace.Info(eventData.Message);
-                _vssTrace.Info(string.Join(", ", eventData.Payload?.ToArray() ?? new string[0]));
+                _actionsHttpTrace.Error(ex);
+                _actionsHttpTrace.Info(eventData.Message);
+                _actionsHttpTrace.Info(string.Join(", ", eventData.Payload?.ToArray() ?? new string[0]));
             }
         }
 
@@ -606,9 +631,8 @@ namespace GitHub.Runner.Common
     {
         public static HttpClientHandler CreateHttpClientHandler(this IHostContext context)
         {
-            HttpClientHandler clientHandler = new HttpClientHandler();
-            clientHandler.Proxy = context.WebProxy;
-            return clientHandler;
+            var handlerFactory = context.GetService<IHttpClientHandlerFactory>();
+            return handlerFactory.CreateClientHandler(context.WebProxy);
         }
     }
 

src/Runner.Common/HttpClientHandlerFactory.cs

@@ -0,0 +1,19 @@
+using System.Net.Http;
+using GitHub.Runner.Sdk;
+
+namespace GitHub.Runner.Common
+{
+    [ServiceLocator(Default = typeof(HttpClientHandlerFactory))]
+    public interface IHttpClientHandlerFactory : IRunnerService
+    {
+        HttpClientHandler CreateClientHandler(RunnerWebProxy webProxy);
+    }
+
+    public class HttpClientHandlerFactory : RunnerService, IHttpClientHandlerFactory
+    {
+        public HttpClientHandler CreateClientHandler(RunnerWebProxy webProxy)
+        {
+            return new HttpClientHandler() { Proxy = webProxy };
+        }
+    }
+}

src/Runner.Common/JobServer.cs

@@ -2,8 +2,11 @@
 using System;
 using System.Collections.Generic;
 using System.IO;
+using System.Net.Http;
 using System.Threading;
 using System.Threading.Tasks;
+using GitHub.Runner.Sdk;
+using GitHub.Services.Common;
 using GitHub.Services.WebApi;
 
 namespace GitHub.Runner.Common
@@ -16,12 +19,14 @@ namespace GitHub.Runner.Common
         // 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, 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<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);
         Task RaisePlanEventAsync<T>(Guid scopeIdentifier, string hubName, Guid planId, T eventData, CancellationToken cancellationToken) where T : JobEvent;
         Task<Timeline> GetTimelineAsync(Guid scopeIdentifier, string hubName, Guid planId, Guid timelineId, CancellationToken cancellationToken);
+        Task<ActionDownloadInfoCollection> ResolveActionDownloadInfoAsync(Guid scopeIdentifier, string hubName, Guid planId, ActionReferenceList actions, CancellationToken cancellationToken);
     }
 
     public sealed class JobServer : RunnerService, IJobServer
@@ -32,13 +37,12 @@ namespace GitHub.Runner.Common
 
         public async Task ConnectAsync(VssConnection jobConnection)
         {
-            if (HostContext.RunMode == RunMode.Local)
-            {
-                return;
-            }
-
             _connection = jobConnection;
-            int attemptCount = 5;
+            int totalAttempts = 5;
+            int attemptCount = totalAttempts;
+            var configurationStore = HostContext.GetService<IConfigurationStore>();
+            var runnerSettings = configurationStore.GetSettings();
+ 
             while (!_connection.HasAuthenticated && attemptCount-- > 0)
             {
                 try
@@ -48,17 +52,71 @@ namespace GitHub.Runner.Common
                 }
                 catch (Exception ex) when (attemptCount > 0)
                 {
-                    Trace.Info($"Catch exception during connect. {attemptCount} attemp left.");
+                    Trace.Info($"Catch exception during connect. {attemptCount} attempts left.");
                     Trace.Error(ex);
+
+                    if (runnerSettings.IsHostedServer)
+                    {
+                        await CheckNetworkEndpointsAsync(attemptCount);
+                    }
                 }
 
-                await Task.Delay(100);
+                int attempt = totalAttempts - attemptCount;
+                TimeSpan backoff = BackoffTimerHelper.GetExponentialBackoff(attempt, TimeSpan.FromMilliseconds(100), TimeSpan.FromSeconds(3.2), TimeSpan.FromMilliseconds(100));
+
+                await Task.Delay(backoff);
             }
 
             _taskClient = _connection.GetClient<TaskHttpClient>();
             _hasConnection = true;
         }
 
+        private async Task CheckNetworkEndpointsAsync(int attemptsLeft)
+        {
+            try
+            {
+                Trace.Info("Requesting Actions Service health endpoint status");
+                using (var httpClientHandler = HostContext.CreateHttpClientHandler())
+                using (var actionsClient = new HttpClient(httpClientHandler))
+                {
+                    var baseUri = new Uri(_connection.Uri.GetLeftPart(UriPartial.Authority));
+
+                    actionsClient.DefaultRequestHeaders.UserAgent.AddRange(HostContext.UserAgents);
+
+                    // Call the _apis/health endpoint, and include how many attempts are left as a URL query for easy tracking
+                    var response = await actionsClient.GetAsync(new Uri(baseUri, $"_apis/health?_internalRunnerAttemptsLeft={attemptsLeft}"));
+                    Trace.Info($"Actions health status code: {response.StatusCode}");
+                }
+            }
+            catch (Exception ex)
+            {
+                // Log error, but continue as this call is best-effort
+                Trace.Info($"Actions Service health endpoint failed due to {ex.GetType().Name}");
+                Trace.Error(ex);
+            }
+
+            try
+            {
+                Trace.Info("Requesting Github API endpoint status");
+                // This is a dotcom public API... just call it directly
+                using (var httpClientHandler = HostContext.CreateHttpClientHandler())
+                using (var gitHubClient = new HttpClient(httpClientHandler))
+                {
+                    gitHubClient.DefaultRequestHeaders.UserAgent.AddRange(HostContext.UserAgents);
+
+                    // Call the api.github.com endpoint, and include how many attempts are left as a URL query for easy tracking
+                    var response = await gitHubClient.GetAsync($"https://api.github.com?_internalRunnerAttemptsLeft={attemptsLeft}");
+                    Trace.Info($"api.github.com status code: {response.StatusCode}");
+                }
+            }
+            catch (Exception ex)
+            {
+                // Log error, but continue as this call is best-effort
+                Trace.Info($"Github API endpoint failed due to {ex.GetType().Name}");
+                Trace.Error(ex);
+            }
+        }
+
         private void CheckConnection()
         {
             if (!_hasConnection)
@@ -73,90 +131,65 @@ namespace GitHub.Runner.Common
 
         public Task<TaskLog> AppendLogContentAsync(Guid scopeIdentifier, string hubName, Guid planId, int logId, Stream uploadStream, CancellationToken cancellationToken)
         {
-            if (HostContext.RunMode == RunMode.Local)
-            {
-                return Task.FromResult<TaskLog>(null);
-            }
-
             CheckConnection();
             return _taskClient.AppendLogContentAsync(scopeIdentifier, hubName, planId, logId, uploadStream, cancellationToken: cancellationToken);
         }
 
         public Task AppendTimelineRecordFeedAsync(Guid scopeIdentifier, string hubName, Guid planId, Guid timelineId, Guid timelineRecordId, Guid stepId, IList<string> lines, CancellationToken cancellationToken)
         {
-            if (HostContext.RunMode == RunMode.Local)
-            {
-                return Task.CompletedTask;
-            }
-
             CheckConnection();
             return _taskClient.AppendTimelineRecordFeedAsync(scopeIdentifier, hubName, planId, timelineId, timelineRecordId, stepId, lines, cancellationToken: cancellationToken);
         }
 
-        public Task<TaskAttachment> CreateAttachmentAsync(Guid scopeIdentifier, string hubName, Guid planId, Guid timelineId, Guid timelineRecordId, string type, string name, Stream uploadStream, CancellationToken cancellationToken)
+        public Task AppendTimelineRecordFeedAsync(Guid scopeIdentifier, string hubName, Guid planId, Guid timelineId, Guid timelineRecordId, Guid stepId, IList<string> lines, long startLine, CancellationToken cancellationToken)
         {
-            if (HostContext.RunMode == RunMode.Local)
-            {
-                return Task.FromResult<TaskAttachment>(null);
+            CheckConnection();
+            return _taskClient.AppendTimelineRecordFeedAsync(scopeIdentifier, hubName, planId, timelineId, timelineRecordId, stepId, lines, startLine, cancellationToken: cancellationToken);
         }
 
+        public Task<TaskAttachment> CreateAttachmentAsync(Guid scopeIdentifier, string hubName, Guid planId, Guid timelineId, Guid timelineRecordId, string type, string name, Stream uploadStream, CancellationToken cancellationToken)
+        {
             CheckConnection();
             return _taskClient.CreateAttachmentAsync(scopeIdentifier, hubName, planId, timelineId, timelineRecordId, type, name, uploadStream, cancellationToken: cancellationToken);
         }
 
         public Task<TaskLog> CreateLogAsync(Guid scopeIdentifier, string hubName, Guid planId, TaskLog log, CancellationToken cancellationToken)
         {
-            if (HostContext.RunMode == RunMode.Local)
-            {
-                return Task.FromResult<TaskLog>(null);
-            }
-
             CheckConnection();
             return _taskClient.CreateLogAsync(scopeIdentifier, hubName, planId, log, cancellationToken: cancellationToken);
         }
 
         public Task<Timeline> CreateTimelineAsync(Guid scopeIdentifier, string hubName, Guid planId, Guid timelineId, CancellationToken cancellationToken)
         {
-            if (HostContext.RunMode == RunMode.Local)
-            {
-                return Task.FromResult<Timeline>(null);
-            }
-
             CheckConnection();
             return _taskClient.CreateTimelineAsync(scopeIdentifier, hubName, planId, new Timeline(timelineId), cancellationToken: cancellationToken);
         }
 
         public Task<List<TimelineRecord>> UpdateTimelineRecordsAsync(Guid scopeIdentifier, string hubName, Guid planId, Guid timelineId, IEnumerable<TimelineRecord> records, CancellationToken cancellationToken)
         {
-            if (HostContext.RunMode == RunMode.Local)
-            {
-                return Task.FromResult<List<TimelineRecord>>(null);
-            }
-
             CheckConnection();
             return _taskClient.UpdateTimelineRecordsAsync(scopeIdentifier, hubName, planId, timelineId, records, cancellationToken: cancellationToken);
         }
 
         public Task RaisePlanEventAsync<T>(Guid scopeIdentifier, string hubName, Guid planId, T eventData, CancellationToken cancellationToken) where T : JobEvent
         {
-            if (HostContext.RunMode == RunMode.Local)
-            {
-                return Task.CompletedTask;
-            }
-
             CheckConnection();
             return _taskClient.RaisePlanEventAsync(scopeIdentifier, hubName, planId, eventData, cancellationToken: cancellationToken);
         }
 
         public Task<Timeline> GetTimelineAsync(Guid scopeIdentifier, string hubName, Guid planId, Guid timelineId, CancellationToken cancellationToken)
         {
-            if (HostContext.RunMode == RunMode.Local)
-            {
-                return Task.FromResult<Timeline>(null);
-            }
-
             CheckConnection();
             return _taskClient.GetTimelineAsync(scopeIdentifier, hubName, planId, timelineId, includeRecords: true, cancellationToken: cancellationToken);
         }
+
+        //-----------------------------------------------------------------
+        // Action download info
+        //-----------------------------------------------------------------
+        public Task<ActionDownloadInfoCollection> ResolveActionDownloadInfoAsync(Guid scopeIdentifier, string hubName, Guid planId, ActionReferenceList actions, CancellationToken cancellationToken)
+        {
+            CheckConnection();
+            return _taskClient.ResolveActionDownloadInfoAsync(scopeIdentifier, hubName, planId, actions, cancellationToken: cancellationToken);
+        }
     }
 }

src/Runner.Common/JobServerQueue.cs

@@ -15,10 +15,11 @@ namespace GitHub.Runner.Common
     [ServiceLocator(Default = typeof(JobServerQueue))]
     public interface IJobServerQueue : IRunnerService, IThrottlingReporter
     {
+        TaskCompletionSource<int> JobRecordUpdated { get; }
         event EventHandler<ThrottlingEventArgs> JobServerQueueThrottling;
         Task ShutdownAsync();
         void Start(Pipelines.AgentJobRequestMessage jobRequest);
-        void QueueWebConsoleLine(Guid stepRecordId, string line);
+        void QueueWebConsoleLine(Guid stepRecordId, string line, long? lineNumber = null);
         void QueueFileUpload(Guid timelineId, Guid timelineRecordId, string type, string name, string path, bool deleteSource);
         void QueueTimelineRecordUpdate(Guid timelineId, TimelineRecord timelineRecord);
     }
@@ -62,8 +63,10 @@ namespace GitHub.Runner.Common
         private IJobServer _jobServer;
         private Task[] _allDequeueTasks;
         private readonly TaskCompletionSource<int> _jobCompletionSource = new TaskCompletionSource<int>();
+        private readonly TaskCompletionSource<int> _jobRecordUpdated = new TaskCompletionSource<int>();
         private bool _queueInProcess = false;
-        private ITerminal _term;
+
+        public TaskCompletionSource<int> JobRecordUpdated => _jobRecordUpdated;
 
         public event EventHandler<ThrottlingEventArgs> JobServerQueueThrottling;
 
@@ -85,11 +88,6 @@ namespace GitHub.Runner.Common
         public void Start(Pipelines.AgentJobRequestMessage jobRequest)
         {
             Trace.Entering();
-            if (HostContext.RunMode == RunMode.Local)
-            {
-                _term = HostContext.GetService<ITerminal>();
-                return;
-            }
 
             if (_queueInProcess)
             {
@@ -129,11 +127,6 @@ namespace GitHub.Runner.Common
         // TimelineUpdate queue error will become critical when timeline records contain output variabls.
         public async Task ShutdownAsync()
         {
-            if (HostContext.RunMode == RunMode.Local)
-            {
-                return;
-            }
-
             if (!_queueInProcess)
             {
                 Trace.Info("No-op, all queue process tasks have been stopped.");
@@ -166,35 +159,14 @@ namespace GitHub.Runner.Common
             Trace.Info("All queue process tasks have been stopped, and all queues are drained.");
         }
 
-        public void QueueWebConsoleLine(Guid stepRecordId, string line)
+        public void QueueWebConsoleLine(Guid stepRecordId, string line, long? lineNumber)
         {
             Trace.Verbose("Enqueue web console line queue: {0}", line);
-            if (HostContext.RunMode == RunMode.Local)
-            {
-                if ((line ?? string.Empty).StartsWith("##[section]"))
-                {
-                    Console.WriteLine("******************************************************************************");
-                    Console.WriteLine(line.Substring("##[section]".Length));
-                    Console.WriteLine("******************************************************************************");
-                }
-                else
-                {
-                    Console.WriteLine(line);
-                }
-
-                return;
-            }
-
-            _webConsoleLineQueue.Enqueue(new ConsoleLineInfo(stepRecordId, line));
+            _webConsoleLineQueue.Enqueue(new ConsoleLineInfo(stepRecordId, line, lineNumber));
         }
 
         public void QueueFileUpload(Guid timelineId, Guid timelineRecordId, string type, string name, string path, bool deleteSource)
         {
-            if (HostContext.RunMode == RunMode.Local)
-            {
-                return;
-            }
-
             ArgUtil.NotEmpty(timelineId, nameof(timelineId));
             ArgUtil.NotEmpty(timelineRecordId, nameof(timelineRecordId));
 
@@ -215,11 +187,6 @@ namespace GitHub.Runner.Common
 
         public void QueueTimelineRecordUpdate(Guid timelineId, TimelineRecord timelineRecord)
         {
-            if (HostContext.RunMode == RunMode.Local)
-            {
-                return;
-            }
-
             ArgUtil.NotEmpty(timelineId, nameof(timelineId));
             ArgUtil.NotNull(timelineRecord, nameof(timelineRecord));
             ArgUtil.NotEmpty(timelineRecord.Id, nameof(timelineRecord.Id));
@@ -251,7 +218,7 @@ namespace GitHub.Runner.Common
                 }
 
                 // Group consolelines by timeline record of each step
-                Dictionary<Guid, List<string>> stepsConsoleLines = new Dictionary<Guid, List<string>>();
+                Dictionary<Guid, List<TimelineRecordLogLine>> stepsConsoleLines = new Dictionary<Guid, List<TimelineRecordLogLine>>();
                 List<Guid> stepRecordIds = new List<Guid>(); // We need to keep lines in order
                 int linesCounter = 0;
                 ConsoleLineInfo lineInfo;
@@ -259,7 +226,7 @@ namespace GitHub.Runner.Common
                 {
                     if (!stepsConsoleLines.ContainsKey(lineInfo.StepRecordId))
                     {
-                        stepsConsoleLines[lineInfo.StepRecordId] = new List<string>();
+                        stepsConsoleLines[lineInfo.StepRecordId] = new List<TimelineRecordLogLine>();
                         stepRecordIds.Add(lineInfo.StepRecordId);
                     }
 
@@ -269,7 +236,7 @@ namespace GitHub.Runner.Common
                         lineInfo.Line = $"{lineInfo.Line.Substring(0, 1024)}...";
                     }
 
-                    stepsConsoleLines[lineInfo.StepRecordId].Add(lineInfo.Line);
+                    stepsConsoleLines[lineInfo.StepRecordId].Add(new TimelineRecordLogLine(lineInfo.Line, lineInfo.LineNumber));
                     linesCounter++;
 
                     // process at most about 500 lines of web console line during regular timer dequeue task.
@@ -284,13 +251,13 @@ namespace GitHub.Runner.Common
                 {
                     // Split consolelines into batch, each batch will container at most 100 lines.
                     int batchCounter = 0;
-                    List<List<string>> batchedLines = new List<List<string>>();
+                    List<List<TimelineRecordLogLine>> batchedLines = new List<List<TimelineRecordLogLine>>();
                     foreach (var line in stepsConsoleLines[stepRecordId])
                     {
                         var currentBatch = batchedLines.ElementAtOrDefault(batchCounter);
                         if (currentBatch == null)
                         {
-                            batchedLines.Add(new List<string>());
+                            batchedLines.Add(new List<TimelineRecordLogLine>());
                             currentBatch = batchedLines.ElementAt(batchCounter);
                         }
 
@@ -312,7 +279,6 @@ namespace GitHub.Runner.Common
                         {
                             Trace.Info($"Skip {batchedLines.Count - 2} batches web console lines for last run");
                             batchedLines = batchedLines.TakeLast(2).ToList();
-                            batchedLines[0].Insert(0, "...");
                         }
 
                         int errorCount = 0;
@@ -321,7 +287,15 @@ namespace GitHub.Runner.Common
                             try
                             {
                                 // we will not requeue failed batch, since the web console lines are time sensitive.
-                                await _jobServer.AppendTimelineRecordFeedAsync(_scopeIdentifier, _hubName, _planId, _jobTimelineId, _jobTimelineRecordId, stepRecordId, batch, default(CancellationToken));
+                                if (batch[0].LineNumber.HasValue)
+                                {
+                                    await _jobServer.AppendTimelineRecordFeedAsync(_scopeIdentifier, _hubName, _planId, _jobTimelineId, _jobTimelineRecordId, stepRecordId, batch.Select(logLine => logLine.Line).ToList(), batch[0].LineNumber.Value, default(CancellationToken));
+                                }
+                                else
+                                {
+                                    await _jobServer.AppendTimelineRecordFeedAsync(_scopeIdentifier, _hubName, _planId, _jobTimelineId, _jobTimelineRecordId, stepRecordId, batch.Select(logLine => logLine.Line).ToList(), default(CancellationToken));
+                                }
+
                                 if (_firstConsoleOutputs)
                                 {
                                     HostContext.WritePerfCounter($"WorkerJobServerQueueAppendFirstConsoleOutput_{_planId.ToString()}");
@@ -485,6 +459,14 @@ namespace GitHub.Runner.Common
                             {
                                 Trace.Verbose("Cleanup buffered timeline record for timeline: {0}.", update.TimelineId);
                             }
+
+                            if (!_jobRecordUpdated.Task.IsCompleted &&
+                                update.PendingRecords.Any(x => x.Id == _jobTimelineRecordId && x.State != null))
+                            {
+                                // We have changed the state of the job
+                                Trace.Info("Job timeline record has been updated for the first time.");
+                                _jobRecordUpdated.TrySetResult(0);
+                            }
                         }
                         catch (Exception ex)
                         {
@@ -574,6 +556,11 @@ namespace GitHub.Runner.Common
                         timelineRecord.WarningCount = rec.WarningCount;
                     }
 
+                    if (rec.NoticeCount != null && rec.NoticeCount > 0)
+                    {
+                        timelineRecord.NoticeCount = rec.NoticeCount;
+                    }
+
                     if (rec.Issues.Count > 0)
                     {
                         timelineRecord.Issues.Clear();
@@ -690,13 +677,15 @@ namespace GitHub.Runner.Common
 
     internal class ConsoleLineInfo
     {
-        public ConsoleLineInfo(Guid recordId, string line)
+        public ConsoleLineInfo(Guid recordId, string line, long? lineNumber)
         {
             this.StepRecordId = recordId;
             this.Line = line;
+            this.LineNumber = lineNumber;
         }
 
         public Guid StepRecordId { get; set; }
         public string Line { get; set; }
+        public long? LineNumber { get; set; }
     }
 }

src/Runner.Common/Logging.cs

@@ -24,7 +24,6 @@ namespace GitHub.Runner.Common
 
         private Guid _timelineId;
         private Guid _timelineRecordId;
-        private string _pageId;
         private FileStream _pageData;
         private StreamWriter _pageWriter;
         private int _byteCount;
@@ -40,7 +39,6 @@ namespace GitHub.Runner.Common
         {
             base.Initialize(hostContext);
             _totalLines = 0;
-            _pageId = Guid.NewGuid().ToString();
             _pagesFolder = Path.Combine(hostContext.GetDirectory(WellKnownDirectory.Diag), PagingFolder);
             _jobServerQueue = HostContext.GetService<IJobServerQueue>();
             Directory.CreateDirectory(_pagesFolder);
@@ -102,8 +100,8 @@ namespace GitHub.Runner.Common
         {
             EndPage();
             _byteCount = 0;
-            _dataFileName = Path.Combine(_pagesFolder, $"{_pageId}_{++_pageCount}.log");
-            _pageData = new FileStream(_dataFileName, FileMode.CreateNew);
+            _dataFileName = Path.Combine(_pagesFolder, $"{_timelineId}_{_timelineRecordId}_{++_pageCount}.log");
+            _pageData = new FileStream(_dataFileName, FileMode.CreateNew, FileAccess.ReadWrite, FileShare.ReadWrite);
             _pageWriter = new StreamWriter(_pageData, System.Text.Encoding.UTF8);
         }
 

src/Runner.Common/ProcessChannel.cs

@@ -3,6 +3,7 @@ using System.IO;
 using System.IO.Pipes;
 using System.Threading;
 using System.Threading.Tasks;
+using GitHub.Runner.Sdk;
 
 namespace GitHub.Runner.Common
 {
@@ -68,6 +69,7 @@ namespace GitHub.Runner.Common
 
         public async Task SendAsync(MessageType messageType, string body, CancellationToken cancellationToken)
         {
+            Trace.Info($"Sending message of length {body.Length}, with hash '{IOUtil.GetSha256Hash(body)}'");
             await _writeStream.WriteInt32Async((int)messageType, cancellationToken);
             await _writeStream.WriteStringAsync(body, cancellationToken);
         }
@@ -77,6 +79,7 @@ namespace GitHub.Runner.Common
             WorkerMessage result = new WorkerMessage(MessageType.NotInitialized, string.Empty);
             result.MessageType = (MessageType)await _readStream.ReadInt32Async(cancellationToken);
             result.Body = await _readStream.ReadStringAsync(cancellationToken);
+            Trace.Info($"Receiving message of length {result.Body.Length}, with hash '{IOUtil.GetSha256Hash(result.Body)}'");
             return result;
         }
 

src/Runner.Common/Runner.Common.csproj

@@ -1,11 +1,10 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFramework>netcoreapp3.0</TargetFramework>
+    <TargetFramework>netcoreapp3.1</TargetFramework>
     <OutputType>Library</OutputType>
     <RuntimeIdentifiers>win-x64;win-x86;linux-x64;linux-arm64;linux-arm;osx-x64</RuntimeIdentifiers>
     <TargetLatestRuntimePatch>true</TargetLatestRuntimePatch>
-    <AssetTargetFallback>portable-net45+win8</AssetTargetFallback>
     <NoWarn>NU1701;NU1603</NoWarn>
     <Version>$(Version)</Version>
     <TieredCompilationQuickJit>true</TieredCompilationQuickJit>