Documentation.yaml

name: Documentation
run-name: 'Documentation - ${{ inputs.oci-image-name }} - ${{ github.ref }}'

on:
  push:
    paths:
      - "oci/*/documentation.y*ml"
    branches:
      - main
  workflow_dispatch:
    inputs:
      oci-image-name:
        description: 'OCI image to generate the documentation for'
        required: true
      external_ref_id:  # (1)
        description: 'Optional ID for unique run detection'
        required: false
        type: string
        default: "default-id"
  workflow_call:
    inputs:
      oci-image-name:
        description: 'OCI image to generate the documentation for'
        required: true
        type: string
  # Dry-run on PRs to generate a preview of the compiled documentation.
  pull_request:
    paths:
      - "oci/*/documentation.y*ml"

jobs:
  validate-documentation-request:
    runs-on: ubuntu-22.04
    name: Validate documentation request
    outputs:
      oci-img-path: ${{ steps.validate-image.outputs.img-path }}
      oci-img-name: ${{ steps.validate-image.outputs.img-name }}
    steps:
      - name: ${{ inputs.external_ref_id }}  # (2)
        if: ${{ github.event_name == 'workflow_dispatch' }}
        run: echo 'Started by ${{ inputs.external_ref_id }}' >> "$GITHUB_STEP_SUMMARY"

      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd

      - name: Validate access to triggered image
        uses: ./.github/actions/validate-actor
        if: ${{ github.repository == 'canonical/oci-factory' && !github.event.pull_request.head.repo.fork }}
        with:
          admin-only: true
          image-path: "oci/${{ inputs.oci-image-name }}"
          github-token: ${{ secrets.ROCKSBOT_TOKEN }}

      - name: Infer images to document
        uses: tj-actions/changed-files@22103cc46bda19c2b464ffe86db46df6922fd323
        id: changed-files
        if: github.event_name != 'workflow_dispatch' && github.event_name != 'workflow_call'
        with:
          dir_names: "true"
          separator: ","
          files: |
            oci/*/documentation.y*ml

      - name: Validate image from dispatch
        id: validate-image
        run: |
          set -e
          if [[ "$RUNNER_DEBUG" == "1" ]]; then
            set -x
          fi
          source src/shared/logs.sh

          # check if this is coming from a workflow dispatch/call
          # as checking github.event_name isn't reliable here
          if [ "${{ inputs.oci-image-name }}" != "" ]
          then
            img_path="oci/${{ inputs.oci-image-name }}"
          else
            img_path="${{ steps.changed-files.outputs.all_changed_files }}"
            occurrences="${img_path//[^,]}"
            if [ ${#occurrences} -ne 0 ]
            then
              log_error "can only build documentation for 1 image at a time, but trying to document ${img_path}"
              exit 1
            fi
          fi
          test -d "${img_path}"
          echo "img-name=$(basename ${img_path})" >> "$GITHUB_OUTPUT"
          echo "img-path=${img_path}" >> "$GITHUB_OUTPUT"


  do-documentation:
    runs-on: ubuntu-22.04
    name: Documentation
    needs: [validate-documentation-request]
    env:
      IS_PROD: ${{ ! startsWith(needs.validate-documentation-request.outputs.oci-img-name, 'mock-') }}
    steps:
      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd

      # This is needed to ensure that this workflow can run when called by workflows in external repositories
      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd
        with:
          repository: canonical/oci-factory
          path: oci-factory

      - name: Fetch _releases.json
        uses: ./oci-factory/.github/actions/fetch-releases-json
        with:
          image-name: ${{ needs.validate-documentation-request.outputs.oci-img-name }}

      - uses: actions/setup-python@a309ff8b426b58ec0e2a45f0f869d46889d02405
        with:
          python-version: "3.x"

      - name: Setup environment
        run: pip install -r ./src/image/requirements.txt -r ./src/docs/requirements.txt

      - name: Generate documentation for ${{ needs.validate-documentation-request.outputs.oci-img-name }}
        id: generate-documentation
        env:
          ECR_CREDS_USR: ${{ env.IS_PROD == 'true' && secrets.ECR_CREDS_USR || secrets.ECR_CREDS_USR_DEV }}
          ECR_CREDS_PSW: ${{ env.IS_PROD == 'true' && secrets.ECR_CREDS_PSW || secrets.ECR_CREDS_PSW_DEV }}
          ECR_NAMESPACE: ${{ env.IS_PROD == 'true' && 'ubuntu' || secrets.ECR_NAMESPACE_DEV }}
          DRY_RUN_FLAG: ${{ github.event_name == 'pull_request' && '--dry-run' || '' }}
        run: |
          set -e
          if [[ "$RUNNER_DEBUG" == "1" ]]; then
            set -x
          fi
          python3 -m src.docs.generate_oci_doc_yaml \
            --ecr-api-key "${ECR_CREDS_USR}" \
            --ecr-api-secret "${ECR_CREDS_PSW}" \
            --oci-image-path "${{ needs.validate-documentation-request.outputs.oci-img-path }}" \
            --repository "${ECR_NAMESPACE}" \
            --doc-data-dir data \
            ${DRY_RUN_FLAG}

      - name: Upload documentation data YAML
        uses: actions/upload-artifact@bbbca2ddaa5d8feaa63e36b76fdaad77386f024f
        with:
          name: '${{ needs.validate-documentation-request.outputs.oci-img-name }}-doc-data'
          path: "${{ steps.generate-documentation.outputs.image_doc_folder }}/*.y*ml"
          if-no-files-found: error

      - name: Publish Documentation for ${{ needs.validate-documentation-request.outputs.oci-img-name }}
        env:
          # In Dev, images go into the personal space of DOCKER_HUB_CREDS_USR_DEV
          # so we can reuse its username (with a more privileged PAT) for updating the docs.
          # In Prod, however, since it's an org, the collaborating DH account is different to
          # segregate access and ensure other jobs in this pipeline don't abuse the privileged
          # access that is needed here, for updating the docs.
          DOCKER_HUB_CREDS_PSW_DOC: ${{ env.IS_PROD == 'true' && secrets.DOCKER_HUB_CREDS_PSW_DOC || secrets.DOCKER_HUB_CREDS_PSW_DOC_DEV }}
          DOCKER_HUB_CREDS_USR_DOC: ${{ env.IS_PROD == 'true' && secrets.DOCKER_HUB_CREDS_USR_DOC || secrets.DOCKER_HUB_CREDS_USR_DEV }}
          ECR_CREDS_USR: ${{ env.IS_PROD == 'true' && secrets.ECR_CREDS_USR || secrets.ECR_CREDS_USR_DEV }}
          ECR_CREDS_PSW: ${{ env.IS_PROD == 'true' && secrets.ECR_CREDS_PSW || secrets.ECR_CREDS_PSW_DEV }}
          ECR_REGISTRY_ID: ${{ env.IS_PROD == 'true' && secrets.ECR_REGISTRY_ID || secrets.ECR_REGISTRY_ID_DEV }}
          DOCKER_HUB_NAMESPACE: ${{ env.IS_PROD == 'true' && 'docker.io/ubuntu' || secrets.DOCKER_HUB_NAMESPACE_DEV }}
          DRY_RUN: ${{ github.event_name == 'pull_request' && 'true' || 'false' }}
        run: |
          set -e
          if [[ "$RUNNER_DEBUG" == "1" ]]; then
            set -x
          fi
          ./src/docs/publish_docs.sh "${{ needs.validate-documentation-request.outputs.oci-img-name }}" "${{ steps.generate-documentation.outputs.name_doc_file }}" "${{ steps.generate-documentation.outputs.image_doc_folder }}"

      - name: Write documentation preview to summary
        if: ${{ github.event_name == 'pull_request' }}
        run: |
          echo "# Preview for ${{ needs.validate-documentation-request.outputs.oci-img-name }}" >> "$GITHUB_STEP_SUMMARY"
          cat "${{ steps.generate-documentation.outputs.image_doc_folder }}/doc-preview.md" >> "$GITHUB_STEP_SUMMARY"


  notify:
    runs-on: ubuntu-22.04
    name: Notify on failure
    needs: [validate-documentation-request, do-documentation]
    if: ${{ !cancelled() && contains(needs.*.result, 'failure') && github.event_name != 'workflow_dispatch' && github.event_name != 'pull_request' }}
    steps:
      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd

      - uses: actions/setup-python@a309ff8b426b58ec0e2a45f0f869d46889d02405
        with:
          python-version: '3.x'

      - run: pip install -r src/notifications/requirements.txt

      - name: Summarize workflow failure message
        id: get-summary
        run: |
          echo '${{ toJson(needs) }}' > jobs.json
          python3 -m src.notifications.mattermost_notifier summarize jobs.json

      - name: Get contacts for ${{ needs.validate-documentation-request.outputs.oci-img-name }}
        id: get-contacts
        working-directory: ${{ needs.validate-documentation-request.outputs.oci-img-path }}
        run: |
          mm_channels=$(yq -r '.notify | ."mattermost-channels" | join(",")' < contacts.y*ml)
          echo "mattermost-channels=${mm_channels}" >> "$GITHUB_OUTPUT"

      - name: Notify via Mattermost
        env:
          MM_BOT_TOKEN: ${{ secrets.MM_BOT_TOKEN }}
          FINAL_STATUS: failure
          MM_SERVER: ${{ secrets.MM_SERVER }}
          URL: ${{ github.server_url }}/${{ github.repository }}/actions/runs/${{ github.run_id }}
          SUMMARY: ${{ steps.get-summary.outputs.summary }}
          FOOTER: "Triggered by ${{ github.triggering_actor }}. Ref: ${{ github.ref }}. Attempts: ${{ github.run_attempt }}"
          TITLE: '${{ needs.validate-documentation-request.outputs.oci-img-name }}: failed to generate docs'
        run: |
          for channel in $(echo ${{ steps.get-contacts.outputs.mattermost-channels }} | tr ',' ' ')
          do
            MM_CHANNEL_ID="${channel}" python3 -m src.notifications.mattermost_notifier send
          done