Sync eng/common directory with azure-sdk-tools for PR 9656 (Azure#39356)

* Added label handle sdk-gen pipeline template

Added common script to delete label from a PR

* Update eng/common/scripts/Invoke-GitHubAPI.ps1

Co-authored-by: Ben Broderick Phillips <bebroder@microsoft.com>

---------

Co-authored-by: ray chen <raychen@microsoft.com>
Co-authored-by: Ben Broderick Phillips <bebroder@microsoft.com>

eng/common/pipelines/templates/jobs/archetype-spec-gen-sdk.yml

@@ -168,6 +168,34 @@ jobs:
         artifactName: $(sdkArtifactName)
         targetPath: "$(System.DefaultWorkingDirectory)/generatedSdkArtifacts"
 
+    - task: PowerShell@2
+      displayName: Add label to the spec PR
+      condition: and(eq(variables['Build.Reason'], 'PullRequest'), ne(variables['BreakingChangeLabel'], ''), eq(variables['BreakingChangeLabelAction'], 'add'))
+      inputs:
+        pwsh: true
+        workingDirectory: $(SdkRepoDirectory)
+        filePath: $(SdkRepoDirectory)/eng/common/scripts/Add-IssueLabels.ps1
+        arguments: >
+          -RepoOwner $(SpecRepoOwner)
+          -RepoName $(SpecRepoName)
+          -IssueNumber "$(System.PullRequest.PullRequestNumber)"
+          -Labels $(BreakingChangeLabel)
+          -AuthToken "$(azuresdk-github-pat)"
+
+    - task: PowerShell@2
+      displayName: Remove label from the spec PR
+      condition: and(eq(variables['Build.Reason'], 'PullRequest'), ne(variables['BreakingChangeLabel'], ''), eq(variables['BreakingChangeLabelAction'], 'remove'))
+      inputs:
+        pwsh: true
+        workingDirectory: $(SdkRepoDirectory)
+        filePath: $(SdkRepoDirectory)/eng/common/scripts/Remove-IssueLabel.ps1
+        arguments: >
+          -RepoOwner $(SpecRepoOwner)
+          -RepoName $(SpecRepoName)
+          -IssueNumber "$(System.PullRequest.PullRequestNumber)"
+          -LabelName $(BreakingChangeLabel)
+          -AuthToken "$(azuresdk-github-pat)"
+
     - ${{ if eq(parameters.SkipPullRequestCreation, false) }}: 
       - template: /eng/common/pipelines/templates/steps/git-push-changes.yml
         parameters:

eng/common/scripts/Invoke-GitHubAPI.ps1

@@ -258,6 +258,39 @@ function Add-GitHubIssueComment {
           -MaximumRetryCount 3
 }
 
+# Will delete label from the issue if it exists
+function Remove-GitHubIssueLabel {
+  param (
+    [Parameter(Mandatory = $true)]
+    $RepoOwner,
+    [Parameter(Mandatory = $true)]
+    $RepoName,
+    [Parameter(Mandatory = $true)]
+    $IssueNumber,
+    [ValidateNotNullOrEmpty()]
+    [Parameter(Mandatory = $true)]
+    $LabelName,
+    [ValidateNotNullOrEmpty()]
+    [Parameter(Mandatory = $true)]
+    $AuthToken
+  )
+
+  if ($LabelName.Trim().Length -eq 0)
+  {
+    throw " The 'LabelName' parameter should not be empty or whitespace."
+  }
+  # Encode the label name
+  $encodedLabelName = [System.Web.HttpUtility]::UrlEncode($LabelName)
+
+  $uri = "$GithubAPIBaseURI/$RepoOwner/$RepoName/issues/$IssueNumber/labels/$encodedLabelName"
+
+  return Invoke-RestMethod `
+          -Method DELETE `
+          -Uri $uri `
+          -Headers (Get-GitHubApiHeaders -token $AuthToken) `
+          -MaximumRetryCount 3
+}
+
 # Will add labels to existing labels on the issue
 function Add-GitHubIssueLabels {
   param (

eng/common/scripts/Remove-IssueLabel.ps1

@@ -0,0 +1,32 @@
+[CmdletBinding(SupportsShouldProcess = $true)]
+param(
+  [Parameter(Mandatory = $true)]
+  [string]$RepoOwner,
+
+  [Parameter(Mandatory = $true)]
+  [string]$RepoName,
+
+  [Parameter(Mandatory = $true)]
+  [string]$IssueNumber,
+
+  [Parameter(Mandatory = $true)]
+  [string]$LabelName,
+
+  [Parameter(Mandatory = $true)]
+  [string]$AuthToken
+)
+
+. (Join-Path $PSScriptRoot common.ps1)
+
+try {
+  Remove-GitHubIssueLabel -RepoOwner $RepoOwner -RepoName $RepoName `
+  -IssueNumber $IssueNumber -LabelName $LabelName -AuthToken $AuthToken
+}
+catch {
+  if ($_.Exception.Response.StatusCode -eq 404) {
+    LogWarning "Label $LabelName not found on issue"
+    exit 0
+  }
+  LogError "Remove-GithubIssueLabel failed with exception:`n$_"
+  exit 1
+}