Add scheduled workflow to restart stale PR status checks

.github/actions/RestartStalePRChecks/action.ps1

@@ -0,0 +1,137 @@
+param (
+    [Parameter(Mandatory = $false, HelpMessage="Threshold in hours for considering a check stale")]
+    [int] $thresholdHours = 72,
+    [Parameter(Mandatory = $false, HelpMessage="Maximum number of retry attempts")]
+    [int] $maxRetries = 3
+)
+
+$ErrorActionPreference = "Stop"
+$ProgressPreference = "SilentlyContinue"
+Set-StrictMode -Version 2.0
+
+Write-Host "Fetching open pull requests..."
+
+# Get all open pull requests
+$prs = gh pr list --state open --json number,title,url --limit 1000 | ConvertFrom-Json
+
+Write-Host "Found $($prs.Count) open pull requests"
+
+if ($prs.Count -eq 0) {
+    Write-Host "::notice::No open pull requests found"
+    exit 0
+}
+
+$now = [DateTime]::UtcNow
+$restarted = 0
+$failed = 0
+
+foreach ($pr in $prs) {
+    Write-Host ""
+    Write-Host "Checking PR #$($pr.number): $($pr.title)"
+
+    # Get checks for this PR
+    try {
+        $checks = gh pr checks $pr.number --json name,state,bucket,completedAt,link | ConvertFrom-Json
+    }
+    catch {
+        Write-Host "  ✗ Failed to get checks for PR: $_"
+        $failed++
+        continue
+    }
+
+    # Find the "Pull Request Status Check"
+    $statusCheck = $checks | Where-Object { $_.name -eq "Pull Request Status Check" }
+
+    if (-not $statusCheck) {
+        Write-Host "  No 'Pull Request Status Check' found for this PR"
+        continue
+    }
+
+    Write-Host "  Check state: $($statusCheck.state)"
+
+    # Check if the check is completed and successful
+    if ($statusCheck.state -ne "SUCCESS") {
+        Write-Host "  Check state is '$($statusCheck.state)', not 'SUCCESS', skipping"
+        continue
+    }
+
+    $completedAt = [DateTime]::Parse($statusCheck.completedAt, [System.Globalization.CultureInfo]::InvariantCulture)
+    $ageInHours = ($now - $completedAt).TotalHours
+
+    Write-Host "  Completed at: $completedAt UTC (Age: $([Math]::Round($ageInHours, 2)) hours)"
+
+    if ($ageInHours -le $thresholdHours) {
+        Write-Host "  Status check is recent enough, no action needed"
+        continue
+    }
+
+    Write-Host "  Status check is older than $thresholdHours hours, requesting rerun..."
+
+    # Try to rerequest the check with retries
+    $prFailed = $false
+    for ($retry = 0; $retry -lt $maxRetries; $retry++) {
+        try {
+            if ($retry -gt 0) {
+                # Exponential backoff: 2s, 4s, 8s
+                $delaySeconds = 2 * [Math]::Pow(2, $retry - 1)
+                Write-Host "  Retry attempt $($retry + 1)/$maxRetries (waiting $delaySeconds seconds)..."
+                Start-Sleep -Seconds $delaySeconds
+            }
+
+            # Rerequest the check by re-running the workflow
+            # First, get the workflow run ID from the check link
+            if ($statusCheck.link -match '/runs/(\d+)') {
+                $runId = $matches[1]
+                # Validate run ID is a positive integer
+                if ([int]$runId -gt 0) {
+                    gh run rerun $runId -R $env:GITHUB_REPOSITORY | Out-Null
+                    Write-Host "  ✓ Successfully triggered re-run of workflow (run ID: $runId)"
+                    $restarted++
+                    break
+                }
+                else {
+                    Write-Host "  ✗ Invalid run ID extracted: $runId"
+                    $prFailed = $true
+                    break
+                }
+            }
+            else {
+                Write-Host "  ✗ Could not extract run ID from link: $($statusCheck.link)"
+                $prFailed = $true
+                break
+            }
+        }
+        catch {
+            $errorMsg = $_.Exception.Message
+            if ($retry -eq $maxRetries - 1) {
+                Write-Host "  ✗ Failed to restart workflow after $maxRetries attempts: $errorMsg"
+                $prFailed = $true
+            }
+            else {
+                Write-Host "  ⚠ Attempt $($retry + 1) failed: $errorMsg"
+            }
+        }
+    }
+
+    # Increment failed counter once per PR if any attempt failed
+    if ($prFailed) {
+        $failed++
+    }
+}
+
+Write-Host ""
+Write-Host "Summary:"
+Write-Host "  ✓ Successfully restarted: $restarted workflow run(s)"
+Write-Host "  ✗ Failed attempts: $failed"
+
+# Add GitHub Actions job summary
+Add-Content -Path $env:GITHUB_STEP_SUMMARY -Value "## PR Status Check Restart Summary"
+Add-Content -Path $env:GITHUB_STEP_SUMMARY -Value ""
+Add-Content -Path $env:GITHUB_STEP_SUMMARY -Value "- ✓ Successfully restarted: **$restarted** workflow run(s)"
+Add-Content -Path $env:GITHUB_STEP_SUMMARY -Value "- ✗ Failed attempts: **$failed**"
+
+# Exit with error if there were any failures
+if ($failed -gt 0) {
+    Write-Host "::error::Failed to process $failed PR(s)"
+    exit 1
+}

.github/actions/RestartStalePRChecks/action.yaml

@@ -0,0 +1,32 @@
+name: Restart Stale PR Checks
+author: Microsoft Corporation
+description: Restart stale PR status checks that are older than a specified threshold
+inputs:
+  thresholdHours:
+    description: Threshold in hours for considering a check stale
+    required: false
+    default: '72'
+  maxRetries:
+    description: Maximum number of retry attempts
+    required: false
+    default: '3'
+  token:
+    description: The GitHub token running the action
+    required: false
+    default: ${{ github.token }}
+runs:
+  using: composite
+  steps:
+    - name: Checkout
+      uses: actions/checkout@v4
+
+    - name: Restart Stale PR Checks
+      shell: pwsh
+      env:
+        GH_TOKEN: ${{ inputs.token }}
+        GITHUB_REPOSITORY: ${{ github.repository }}
+      run: |
+        ${{ github.action_path }}/action.ps1 -thresholdHours ${{ inputs.thresholdHours }} -maxRetries ${{ inputs.maxRetries }}
+branding:
+  icon: rotate-cw
+  color: blue

.github/workflows/RestartPRStatusCheck.yaml

@@ -0,0 +1,31 @@
+name: 'Restart Pull Request Status Check'
+
+on:
+  schedule:
+    - cron: '0 0 */3 * *' # Run every 3 days at midnight UTC
+  workflow_dispatch: # Allow manual trigger for testing
+
+permissions:
+  actions: write
+  checks: read
+  contents: read
+  pull-requests: read
+
+defaults:
+  run:
+    shell: pwsh
+
+jobs:
+  RestartStatusChecks:
+    runs-on: ubuntu-latest
+    name: Restart Stale PR Status Checks
+    steps:
+      - name: Checkout
+        uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
+
+      - name: Restart Stale PR Status Checks
+        uses: ./.github/actions/RestartStalePRChecks
+        with:
+          thresholdHours: 72
+          maxRetries: 3
+          token: ${{ github.token }}