Sync eng/common directory with azure-sdk-tools for PR 2093 (#2984)

* Consume Codeowners parser library, ceperate users from teams in codeownerse

* Update get-pr-owners and related logic

Co-authored-by: Chidozie Ononiwu <chononiw@microsoft.com>

eng/common/pipelines/templates/steps/get-pr-owners.yml

@@ -1,16 +1,30 @@
 parameters: 
   TargetVariable: ''
+  TargetUserVariable: 'notspecified'
+  TargetTeamVariable: 'notspecified'
+  TargetLabelVariable: 'notspecified'
   ServiceDirectory: ''
+  DevOpsFeed: "https://pkgs.dev.azure.com/azure-sdk/public/_packaging/azure-sdk-for-net/nuget/v3/index.json"
 
 steps:
-  - pwsh: |
-      git clone https://github.com/Azure/azure-sdk-tools.git $(Build.SourcesDirectory)/tools_repo
-      cd $(Build.SourcesDirectory)/tools_repo
-      git checkout azure-sdk-tools_20210114.1
-    displayName: Setup Identity Resolver
+  - task: DotNetCoreCLI@2
+    displayName: 'Install Identity Resolver'
+    inputs:
+      command: custom
+      custom: 'tool'
+      arguments: 'install --global --add-source "${{ parameters.DevOpsFeed }}" --version "1.0.0-dev.20211018.1" "Azure.Sdk.Tools.IdentityResolver"'
+      workingDirectory: '$(Agent.BuildDirectory)'
+
+  - task: DotNetCoreCLI@2
+    displayName: 'Install CodeOwners Retriever'
+    inputs:
+      command: custom
+      custom: 'tool'
+      arguments: 'install --global --add-source "${{ parameters.DevOpsFeed }}" --version "1.0.0-dev.20211019.1" "Azure.Sdk.Tools.RetrieveCodeOwners"'
+      workingDirectory: '$(Agent.BuildDirectory)'
 
   - pwsh: |
-      dotnet run -v q -- `
+      identity-resolver `
         --aad-app-id-var APP_ID `
         --aad-app-secret-var APP_SECRET `
         --aad-tenant-var AAD_TENANT `
@@ -19,10 +33,9 @@ steps:
         --kusto-table-var KUSTO_TABLE `
         --identity-name "$(Build.QueuedBy)" `
         --identity-email "$(Build.RequestedForEmail)" `
-        --targetvar "${{ parameters.TargetVariable }}"
+        --targetvar "${{ coalesce(parameters.TargetVariable, parameters.TargetUserVariable) }}"
     displayName: 'Resolving Queuing User'
     continueOnError: true
-    workingDirectory: $(Build.SourcesDirectory)/tools_repo/tools/notification-configuration/identity-resolver
     env:
       APP_ID: $(notification-aad-app-id)
       APP_SECRET: $(notification-aad-secret)
@@ -32,15 +45,10 @@ steps:
       KUSTO_TABLE: $(notification-kusto-table)
 
   - pwsh: |
-      Remove-Item -Force -Recurse $(Build.SourcesDirectory)/tools_repo
-    displayName: Clean Up Cloned Tools Repo
-
-  - task: PowerShell@2
-    displayName: Add CodeOwners if Present
-    inputs:
-      pwsh: true
-      filePath: $(Build.SourcesDirectory)/eng/common/scripts/get-codeowners.ps1
-      arguments: >
-        -TargetDirectory "/sdk/${{ parameters.ServiceDirectory }}/"
-        -RootDirectory "$(Build.SourcesDirectory)"
-        -VsoVariable "${{ parameters.TargetVariable }}"
+      retrieve-codeowners `
+        --target-directory "/sdk/${{ parameters.ServiceDirectory }}/" `
+        --root-directory "$(Build.SourcesDirectory)" `
+        --vso-owning-users "${{ coalesce(parameters.TargetVariable, parameters.TargetUserVariable) }}" `
+        --vso-owning-teams "${{ parameters.TargetTeamVariable }}" `
+        --vso-owning-labels "${{ parameters.TargetLabelVariable }}"
+    displayName: 'Add CodeOwners if Present'

eng/common/scripts/get-codeowners.ps1

@@ -1,50 +0,0 @@
-param (
-  $TargetDirectory, # should be in relative form from root of repo. EG: sdk/servicebus
-  $RootDirectory, # ideally $(Build.SourcesDirectory)
-  $VsoVariable = "" # target devops output variable
-)
-$target = $TargetDirectory.ToLower().Trim("/")
-$codeOwnersLocation = Join-Path $RootDirectory -ChildPath ".github/CODEOWNERS"
-$ownedFolders = @{}
-
-if (!(Test-Path $codeOwnersLocation)) {
-  Write-Host "Unable to find CODEOWNERS file in target directory $RootDirectory"
-  exit 1
-}
-
-$codeOwnersContent = Get-Content $codeOwnersLocation
-
-foreach ($contentLine in $codeOwnersContent) {
-  if (-not $contentLine.StartsWith("#") -and $contentLine){
-    $splitLine = $contentLine -split "\s+"
-    
-    # CODEOWNERS file can also have labels present after the owner aliases
-    # gh aliases start with @ in codeowners. don't pass on to API calls
-    $ownedFolders[$splitLine[0].ToLower().Trim("/")] = ($splitLine[1..$($splitLine.Length)] `
-      | ? { $_.StartsWith("@") } `
-      | % { return $_.substring(1) }) -join ","
-  }
-}
-
-$results = $ownedFolders[$target]
-
-if ($results) {
-  Write-Host "Found a folder $results to match $target"
-  
-  if ($VsoVariable) {
-    $alreadyPresent = [System.Environment]::GetEnvironmentVariable($VsoVariable)
-
-    if ($alreadyPresent) { 
-      $results += ",$alreadyPresent"
-    }
-    Write-Host "##vso[task.setvariable variable=$VsoVariable;]$results"
-  }
-
-  return $results
-}
-else {
-  Write-Host "Unable to match path $target in CODEOWNERS file located at $codeOwnersLocation."
-  Write-Host ($ownedFolders | ConvertTo-Json)
-  return ""
-}
-