swagger_validation.yml

pool:
  vmImage: "ubuntu-latest"

steps:
  - pwsh: |
      $errorsTotal = 0
      $warningsTotal = 0

      # Get the list of files for the given PR
      $currentLocation = Get-Location
      $files = git diff HEAD~1 --name-only
      $swaggerFiles = $files | where {$_ -match '.+?apidefinition.swagger.json$'}

      $Headers = @{
        Authorization = $env:token
      }

      foreach ($file in $swaggerFiles) { 
        $currentFilePath = Join-Path $currentLocation ($file.Replace('/', '\'))
        $previousCommitHash = git log --max-count=1 --skip=1 --first-parent --pretty=format:%H $currentFilePath

        $newFileContent = Get-Content $file -Raw

        # Validate swagger
        $isCertValidation = $file -Like "*certified-connectors/*" -Or $file -Like "*independent-publisher-connectors/*"
        $swaggerValidatorUri = "$($env:swaggerValidator)?IsCertificationValidation=$isCertValidation"
        $results = Invoke-RestMethod -Uri $swaggerValidatorUri -Headers $Headers -Method Post -ContentType "application/json; charset=utf-8" -Body $newFileContent
        
        $errors = $results.Errors
        $warnings = $results.Warnings

        if ($errors) {
          $errorsTotal += $errors.Count
          $errors | foreach { Write-Host "##vso[task.logissue type=error;]$_" }
        } # If Swagger Error
        
        if ($warnings) {
          $warningsTotal += $warnings.Count
          $warnings | foreach { Write-Host "##vso[task.logissue type=warning;sourcepath=$file;]$_" }
        } # If Swagger Warnings

        # Check for breaking changes when previous commit exits
        # And there is NO swagger validation error
        if ($previousCommitHash -AND -NOT $errors) {
          $oldSwagger = git show "$($previousCommitHash):$($file)" | Out-String | ConvertFrom-Json
          $newSwagger = $newFileContent | ConvertFrom-Json

          $changeValidation = @{
            OldSwagger = $oldSwagger
            NewSwagger = $newSwagger
          }

          $changeValidationJson = ConvertTo-Json $changeValidation -Depth 100 -Compress

          # Validate changes
          $results = Invoke-RestMethod -Uri $env:changeValidator -Headers $Headers -Method Post -ContentType "application/json; charset=utf-8" -Body $changeValidationJson

          $errors = $results.Errors
          $warnings = $results.Warnings

          if ($errors) {
              $errorsTotal += $errors.Count
              $errors | foreach { Write-Host "##vso[task.LogIssue type=error;]$_" }
          } # If there are any errors

          if ($warnings) {
              $warningsTotal += $warnings.Count
              $warnings | foreach { Write-Host "##vso[task.LogIssue type=warning;sourcepath=$file;]$_" }
          } # If there are any warnings

        } # If previous commit exists perform breaking change validation

      } # For each file

      if ($errorsTotal -gt 0) {
          Write-Host "##vso[task.complete result=Failed;]Errors encountered."
      }
      elseif ($warningsTotal -gt 0) {
          Write-Host "##vso[task.complete result=SucceededWithIssues;]Warnings encountered."    
      }
      else {
          Write-Host "##vso[task.complete result=Succeeded;]No error or warnings encountered."    
      }
    env:
      swaggerValidator: "$(ValidatorUrl)/ValidateSwagger"
      changeValidator: "$(ValidatorUrl)/ValidateChange"
      token: $(token)