azure-pipeline-template.yml

# Template parameters
parameters:
  - name: stage
    type: string
    values:
      - 'dev'
      - 'prod'
    default: 'dev'


variables:
  imageRepository: 'search'
  containerRegistry: '$(CONTAINER_REGISTRY)'
  dockerfilePath: 'Dockerfile'
  ${{ if eq(parameters.stage, 'prod') }}:
    tagVersion: '$(Build.BuildId)'
    tagLatest: 'latest'
    postfix: ''
  ${{ if eq(parameters.stage, 'dev') }}:
    tagVersion: '$(Build.BuildId)-dev'
    tagLatest: 'latest-dev'
    postfix: '-dev'

stages:
  # Test stage:
  # Runs a Maven task that is equivalent to a "mvn test" command and collects the results in JaCoCo.
  - stage: Test
    displayName: Test stage
    jobs:
      - job: Test
        displayName: Test
        steps:
          - task: Maven@3
            inputs:
              mavenPomFile: 'pom.xml'
              goals: 'test'
              publishJUnitResults: true
              testResultsFiles: '**/surefire-reports/TEST-*.xml'
              codeCoverageToolOption: 'JaCoCo'
              javaHomeOption: 'JDKVersion'
              jdkVersionOption: '1.17'
              mavenVersionOption: 'Default'
              mavenAuthenticateFeed: false
              effectivePomSkip: false
              sonarQubeRunAnalysis: false
  # Build stage:
  # 1. Runs a Maven task that is equivalent to a "mvn build" command to build the java project into a jar artifact.
  # 2. Runs a Docker task that builds the artifact into a docker image and pushes it to ACR.
  # 3. Creates an artifact for the kubernetes folder holding the kubernetes yaml files.
  - stage: Build
    displayName: Build stage
    dependsOn: Test
    jobs:
      - job: Build
        displayName: Build
        condition: and(succeeded(), not(startsWith(variables['Build.SourceBranch'], 'refs/pull/')))
        steps:
          - task: Maven@3
            displayName:
            inputs:
              mavenPomFile: 'pom.xml'
              options: '-e -DskipTests'
              publishJUnitResults: false
              javaHomeOption: 'JDKVersion'
              jdkVersionOption: '1.17'
              mavenVersionOption: 'Default'
              mavenAuthenticateFeed: false
              effectivePomSkip: false
              sonarQubeRunAnalysis: false
          - task: CmdLine@2
            inputs:
              script: |
                echo "dockerRegistryServiceConnection is $(dockerRegistryServiceConnection)"
                echo "imageRepository is $(imageRepository)"
                echo "dockerfilePath is $(dockerfilePath)"
          - task: Docker@2
            displayName: Build and push an image to container registry
            inputs:
              command: buildAndPush
              repository: $(imageRepository)
              dockerfile: $(dockerfilePath)
              containerRegistry: $(dockerRegistryServiceConnection)
              tags: |
                $(tagVersion)
                $(tagLatest)
          - upload: kubernetes
            artifact: kubernetes

  # Deploy stage:
  # 1. Runs a KubernetesManifest task that creates a kubernetes secret that hold the credentials to connect to ACR
  # 2. Runs a replacetokens task that replaces tokens in the kubernetes/*.yml files with pipeline environment variables
  # 3. Runs a KubernetesManifest task that
  #       1. deploys all the manifests in the kubernetes folder (= runs a "kubectl apply" for every one of them)
  #       2. retrieves the previously built docker image from ACR and deploys it
  - stage: Deploy
    displayName: Deploy stage
    dependsOn: Build

    jobs:
      - deployment: Deploy
        timeoutInMinutes: 2
        condition: and(succeeded(), not(startsWith(variables['Build.SourceBranch'], 'refs/pull/')))
        displayName: Deploy
        environment: 'dev'
        strategy:
          runOnce:
            deploy:
              steps:
                - task: CmdLine@2
                  inputs:
                    script: |
                      echo "kubernetesServiceConnection is $(kubernetesServiceConnection)"
                - task: replacetokens@3
                  inputs:
                    rootDirectory: '$(Pipeline.Workspace)'
                    targetFiles: 'kubernetes/*.yml'
                    encoding: 'auto'
                    writeBOM: true
                    actionOnMissing: 'warn'
                    keepToken: false
                    tokenPrefix: '$('
                    tokenSuffix: ')'
                - task: KubernetesManifest@0
                  displayName: Deploy to Kubernetes cluster
                  inputs:
                    action: 'deploy'
                    kubernetesServiceConnection: '$(kubernetesServiceConnection)'
                    namespace: 'backend'
                    manifests: |
                      $(Pipeline.Workspace)/kubernetes/rbac.yml
                      $(Pipeline.Workspace)/kubernetes/config-map.yml
                      $(Pipeline.Workspace)/kubernetes/deployment.yml
                      $(Pipeline.Workspace)/kubernetes/service.yml
                      $(Pipeline.Workspace)/kubernetes/ingress.yml
                    containers: '$(containerRegistry)/$(imageRepository):$(tagVersion)'