action.yml

name: standard-chart-build-deploy
inputs:
  chart_dir:
    required: true
    description: Relative or absolute path to a chart directory
  artifact_bucket:
    required: true
    description: Bucket to use for artifacts (chart & values)
  pubsub_topic:
    required: true
    description: Pubsub topic used to send trigger message to Spinnaker
  trigger:
    required: false
    description: A string passed to the 'trigger' field of the pubsub topic
    default: github action
runs:
  using: composite
  steps:
    - name: get short sha
      id: gh
      shell: bash
      run: |
        sha=${{ github.sha }}
        echo "GIT_SHORT_SHA=${sha:0:8}" >> $GITHUB_ENV
    - name: get metadata from chart
      id: chart_metadata
      shell: bash
      run: |
        appVer=$(cat ${{ inputs.chart_dir }}/Chart.yaml | awk '$1 ~ /appVersion:/ { print $2 }' | tr -d '"')
        appName=$(cat ${{ inputs.chart_dir }}/Chart.yaml | awk '$1 ~ /^name:/ { print $2 }' | tr -d '"')

        echo "appVersion=$appVer" >> $GITHUB_OUTPUT
        echo "appName=$appName" >> $GITHUB_OUTPUT
        echo "CHART_APP_NAME=$appName" >> $GITHUB_ENV 
        echo "CHART_APP_VERSION=$appVer" >> $GITHUB_ENV
        echo "CHART_PACKAGED_TGZ=$appName-${appVer}.tgz" >> $GITHUB_ENV
    - name: build helm chart
      shell: bash
      run: |
        helm package \
          --app-version=$CHART_APP_VERSION \
          --version=$CHART_APP_VERSION \
            ${{ inputs.chart_dir }}
    - name: upload to bucket
      shell: bash
      run: |
        gsutil cp $CHART_PACKAGED_TGZ             gs://${{ inputs.artifact_bucket }}/$CHART_APP_NAME/$GIT_SHORT_SHA/charts/${CHART_APP_NAME}.tgz
        gsutil cp ${{ inputs.chart_dir }}/values* gs://${{ inputs.artifact_bucket }}/$CHART_APP_NAME/$GIT_SHORT_SHA/values/
    - name: trigger spinnaker via pubsub
      shell: bash
      run: |
        json=$(
          jq  \
            --null-input \
            --arg appName     $CHART_APP_NAME \
            --arg appVersion  $CHART_APP_VERSION \
            --arg gitCommit   $GIT_SHORT_SHA \
            --arg gitBranch   ${{ github.ref }} \
            --arg trigger     "${{ inputs.trigger }}" \
            '{ appName: $appName, appVersion: $appVersion, gitCommit: $gitCommit, gitBranch: $gitBranch, trigger: $trigger, }'
        )
        echo "JSON: $json"
        gcloud pubsub topics publish ${{ inputs.pubsub_topic }} --message "$json"