From f0507395a33d341c0a3a91c60340d437da74b694 Mon Sep 17 00:00:00 2001
From: Konrad Jamrozik <kojamroz@microsoft.com>
Date: Fri, 22 Sep 2023 15:51:12 -0700
Subject: [PATCH 1/2] Update comment.yml: add exponential backoff to adding
 `MergeRequested` label

https://github.com/Azure/azure-sdk-tools/issues/6768
---
 .github/workflows/comment.yml | 36 ++++++++++++++++++++++++++++++-----
 1 file changed, 31 insertions(+), 5 deletions(-)

diff --git a/.github/workflows/comment.yml b/.github/workflows/comment.yml
index db695baba900..ebb489c89f99 100644
--- a/.github/workflows/comment.yml
+++ b/.github/workflows/comment.yml
@@ -28,11 +28,37 @@ jobs:
             return
           }
           $label = 'MergeRequested'
-          Write-Host "gh pr edit $($payload.issue.number) --add-label `"$label`""
-          gh pr edit $payload.issue.html_url --add-label "$label"
-          if ($LASTEXITCODE) {
-            Write-Warning "Failed to add label"
-            exit $LASTEXITCODE
+          
+          $retryCount = 0
+          $maxRetries = 5
+          $retryDelay = 5 # Initial retry delay in seconds
+
+          while ($retryCount -lt $maxRetries) {
+            Write-Host "Attempt $(retryCount+1) out of $(maxRetries): gh pr edit $($payload.issue.number) --add-label `"$label`""
+            gh pr edit $payload.issue.html_url --add-label "$label"
+            
+            if ($LASTEXITCODE -eq 0) {
+              Write-Host "Label added successfully on attempt $(retryCount+1) out of $maxRetries"
+              break
+            } else {
+              Write-Warning "Failed to add label on attempt $(retryCount+1) out of $maxRetries"
+              $retryCount++
+              if ($retryCount -lt $maxRetries) {
+                # Exponential backoff in seconds: 
+                #  5 =  1*5
+                # 10 =  2*5
+                # 20 =  4*5
+                # 40 =  8*5
+                $retryDelay = [math]::Pow(2, $retryCount) * $retryDelay
+                Write-Host "Sleeping for $retryDelay seconds."
+                Start-Sleep -Seconds $retryDelay
+              }
+            }
+          }
+
+          if ($retryCount -ge $maxRetries) {
+            Write-Error "Max retry attempts of $maxRetries exhausted. Exiting with error."
+            exit 1
           }
         env:
           PAYLOAD: ${{ toJson(github.event) }}

From d23f12377368f995d06036e8774f5e043907fb98 Mon Sep 17 00:00:00 2001
From: Konrad Jamrozik <kojamroz@microsoft.com>
Date: Fri, 22 Sep 2023 16:49:03 -0700
Subject: [PATCH 2/2] Update comment.yml: bugfixes

---
 .github/workflows/comment.yml | 31 +++++++++++++++----------------
 1 file changed, 15 insertions(+), 16 deletions(-)

diff --git a/.github/workflows/comment.yml b/.github/workflows/comment.yml
index ebb489c89f99..cbab2770cb62 100644
--- a/.github/workflows/comment.yml
+++ b/.github/workflows/comment.yml
@@ -16,15 +16,15 @@ jobs:
       - name: Process comment
         shell: pwsh
         run: |
-          $payload = echo $env:PAYLOAD | ConvertFrom-Json -AsHashtable
+          $payload = Write-Output $env:PAYLOAD | ConvertFrom-Json -AsHashtable
           if (!$payload.comment -or !$payload.comment.body) {
-            Write-Host "Empty comment, returning..."
+            Write-Host "Skipping: empty comment."
             return
           }
           $body = $payload.comment.body.Trim().ToLowerInvariant()
           $expected = '/pr requestmerge'
           if ($body -ne $expected) {
-            Write-Host "Comment did not equal '$expected', skipping..."
+            Write-Host "Skipping: comment did not equal '$expected'."
             return
           }
           $label = 'MergeRequested'
@@ -34,34 +34,33 @@ jobs:
           $retryDelay = 5 # Initial retry delay in seconds
 
           while ($retryCount -lt $maxRetries) {
-            Write-Host "Attempt $(retryCount+1) out of $(maxRetries): gh pr edit $($payload.issue.number) --add-label `"$label`""
+            
+            Write-Host "Attempt $($retryCount+1) out of $($maxRetries): gh pr edit $($payload.issue.number) --add-label `"$label`""
             gh pr edit $payload.issue.html_url --add-label "$label"
             
             if ($LASTEXITCODE -eq 0) {
-              Write-Host "Label added successfully on attempt $(retryCount+1) out of $maxRetries"
+              Write-Host "Label added successfully on attempt $($retryCount+1) out of $($maxRetries)."
               break
             } else {
-              Write-Warning "Failed to add label on attempt $(retryCount+1) out of $maxRetries"
+              Write-Warning "Failed to add label on attempt $($retryCount+1) out of $($maxRetries)."
               $retryCount++
               if ($retryCount -lt $maxRetries) {
-                # Exponential backoff in seconds: 
-                #  5 =  1*5
-                # 10 =  2*5
-                # 20 =  4*5
-                # 40 =  8*5
-                $retryDelay = [math]::Pow(2, $retryCount) * $retryDelay
-                Write-Host "Sleeping for $retryDelay seconds."
+                # $retryDelay = 5 exponential backoff in seconds:
+                # attempt 2:  5 =  1*5
+                # attempt 3: 10 =  2*5
+                # attempt 4: 20 =  4*5
+                # attempt 5: 40 =  8*5
+                Write-Host "Sleeping for $retryDelay seconds..."
                 Start-Sleep -Seconds $retryDelay
+                $retryDelay = $retryDelay * 2
               }
             }
           }
 
           if ($retryCount -ge $maxRetries) {
-            Write-Error "Max retry attempts of $maxRetries exhausted. Exiting with error."
+            Write-Error "Max retry attempts of $maxRetries exhausted. Exiting with error ('exit 1')."
             exit 1
           }
         env:
           PAYLOAD: ${{ toJson(github.event) }}
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-
-