pr_codestyle_report.yml

pool:
  name: Azure Pipelines

steps:
- task: JavaToolInstaller@0
  displayName: 'Use Java 17'
  inputs:
    versionSpec: 17
    jdkArchitectureOption: x64
    jdkSourceOption: PreInstalled

- script: |
   curl -L https://github.com/checkstyle/checkstyle/releases/download/checkstyle-10.12.5/checkstyle-10.12.5-all.jar --output checkstyle-10.12.5-all.jar
   
  displayName: 'Download checkstyle'

- script: |
   curl https://raw.githubusercontent.com/checkstyle/checkstyle/master/src/main/resources/google_checks.xml --output google_checks.xml
   dir
  displayName: 'Download checkstyle config'

- powershell: |
   $user = ""
   $token = '$(System.AccessToken)'
   
   $base64AuthInfo = [Convert]::ToBase64String([Text.Encoding]::ASCII.GetBytes(("{0}:{1}" -f $user,$token)))
   $orgUrl = "$(System.CollectionUri)"
   $teamProject = "$(System.TeamProject)"
   $repoName = "$(Build.Repository.Name)"
   $prId = "$(System.PullRequest.PullRequestId)"
   $reportFileName = "CodeReport-$(get-date -f yyyy-MM-dd-HH-mm).txt"
   
   $bodyCommentTemplate = @"
   {
     "comments": [
       {
         "parentCommentId": 0,
         "content": "There are code style warnings [LINK_NAME](LINK_REF)",
         "commentType": 1
       }
     ],
     "status": 1
   }
   "@
   
   $restAddAttachment = "$orgUrl/$teamProject/_apis/git/repositories/$repoName/pullRequests/$prId/attachments/$reportFileName`?api-version=7.1-preview.1"
   $restAddComment = "$orgUrl/$teamProject/_apis/git/repositories/$repoName/pullRequests/$prId/threads?api-version=7.1-preview.1"
   
   function InvokePostFileRequest ($PostUrl, $FilePath)
   {    
       return Invoke-RestMethod -Uri $PostUrl -Method Post -ContentType "application/octet-stream" -InFile $FilePath -Headers @{Authorization=("Basic {0}" -f $base64AuthInfo)}
   }
   
   function InvokePostRequest ($PostUrl, $PostBody)
   {    
       return Invoke-RestMethod -Uri $PostUrl -Method Post -ContentType "application/json" -Body $PostBody -Headers @{Authorization=("Basic {0}" -f $base64AuthInfo)}
   }
   
   
   $buildreason = "$(Build.Reason)"
   
   if ($buildreason -eq "PullRequest")
   {
       $targetBranch = "$(system.pullRequest.targetBranch)" -replace "refs/heads/", "origin/"
       $changes = git diff --name-only --relative --diff-filter AMR $targetBranch .
       Write-Host "git diff --name-only --relative --diff-filter AMR $targetBranch ."    
   }
   
   $report_content = ""
   
   if ($changes.Count -gt 0)
   {
       foreach($change in $changes)
       {
           if($change.EndsWith(".java") -and -not $change.EndsWith("Test.java")){ 
               Write-Host $change
               $results = java -jar checkstyle-10.12.5-all.jar -c google_checks.xml $change
               
               $report_for_file = $false
               
               foreach($result in $results){
                   if ($report_for_file -eq $false){
                       $report_content += "File: " + $change + "`n"
                       $report_for_file = $true
                   }
                   
                   $file_result = $result.Replace("[WARN] ", "")
                   $file_result = $file_result.Replace('$(Build.SourcesDirectory)/', "")
                       
                   $report_content += $file_result + "`n"
                       
                   Write-Host $result
               }
           }
       }
   }
   
   if ($report_content -eq ""){
       return
   }
   
   Write-Host "Result"
   
   Set-Content -Path $reportFileName -Value $report_content
   Get-Content -Path $reportFileName
   
   $resAttachment = InvokePostFileRequest $restAddAttachment $reportFileName
   
   $attachmentRef = "[$($resAttachment.displayName)]($($resAttachment.url))"
   
   $bodyComment = $bodyCommentTemplate -replace "LINK_NAME", $resAttachment.displayName
   $bodyComment = $bodyComment -replace "LINK_REF", $resAttachment.url
   
   InvokePostRequest $restAddComment $bodyComment
  displayName: 'Check Code'