release-plugins.yaml

name: Backstage plugin release

on:
  pull_request:
    branches:
      - 'release-*'
    paths:
      - 'backstage/plugins/knative-event-mesh-backend/**'
  push:
    branches:
      - 'release-*'
      # Do not run on push to release-next branch. We don't want to publish the plugin on every push to release-next.
      # It might be okay to do so, but sobranch tool doesn't work well with release-next branch name.
      - '!release-next'
# Ideally, we would want to only publish the plugin on NPM when there's an actual code change in the plugin.
# However, using the path filters block workflow execution on initial branch creation.
# So, let's publish on every push to a release branch.
# see https://github.com/openshift-knative/backstage-plugins/pull/15#issuecomment-2333324099
#    paths:
#      - 'backstage/plugins/knative-event-mesh-backend/**'

concurrency:
  group: ${{ github.workflow }}-${{ github.ref }}

jobs:
  release:
    name: Release
    runs-on: ubuntu-latest

    steps:
      - name: Checkout
        uses: actions/checkout@v4

      - uses: dorny/paths-filter@v3
        id: changes
        with:
          filters: |
            event_mesh_plugin:
              - 'backstage/plugins/knative-event-mesh-backend/**'

      - name: Setup Golang
        uses: actions/setup-go@v5
        with:
          go-version-file: go.mod

      - name: Checkout openshift-knative/hack
        uses: actions/checkout@v4
        with:
          repository: 'openshift-knative/hack'
          ref: 'main'
          path: ./src/github.com/openshift-knative/hack

      - name: Install sobranch
        run: |
          go install ./cmd/sobranch
        working-directory: ./src/github.com/openshift-knative/hack

      - name: Setup release name for release branch push
        # do not run the step on PRs against release-next branch. run it on:
        # PRs against release-* branches, push to release-* branches, and creation of release-* branches
        if: github.event.created || steps.changes.outputs.event_mesh_plugin == 'true'
        run: |
          BRANCH=$(git rev-parse --abbrev-ref HEAD) #e.g. release-v1.33
          echo "Release branch: ${BRANCH}"
          
          SO_RELEASE_NAME=$( $(go env GOPATH)/bin/sobranch --upstream-version "${BRANCH}") # input format: "release-v1.11" or "release-1.11" or "v1.11" or "1.11"
          # SO_RELEASE_NAME will be something like "release-1.33"
          echo "SO_RELEASE_NAME: ${SO_RELEASE_NAME}"
          
          # split the release name to get the version number
          ## e.g. release-1.33 -> 1.33
          BASE_RELEASE_VERSION=${SO_RELEASE_NAME#*-}
          echo "BASE_RELEASE_VERSION: ${BASE_RELEASE_VERSION}"
          
          RELEASE_NAME="${BASE_RELEASE_VERSION}.0"
          
          EXISTING_RELEASES=""
          
          if EXISTING_RELEASES=$(npm view @openshift-knative/plugin-knative-event-mesh-backend versions --json); then
            echo "Package information fetched successfully"
            echo "Existing releases: ${EXISTING_RELEASES}"
            PATCH_RELEASES=$(echo "${EXISTING_RELEASES}" | grep ${BASE_RELEASE_VERSION})
            if [ -z "${PATCH_RELEASES}" ]; then
              echo "No existing PATCH_RELEASES found for ${BASE_RELEASE_VERSION}"
              echo "Going to publish a new .0 patch release"
              RELEASE_NAME="${BASE_RELEASE_VERSION}.0"
            else
              echo "Existing PATCH_RELEASES found for ${BASE_RELEASE_VERSION}"
              PATCH=$(echo "${PATCH_RELEASES}" | tail -1 | tr -d '"' | awk -F \. '{print $3+1}')
              RELEASE_NAME="${BASE_RELEASE_VERSION}.${PATCH}"
            fi
          else
            echo "Error fetching package information. Going to publish a new .0 patch release"
            RELEASE_NAME="${BASE_RELEASE_VERSION}.0"
          fi
          
          echo "RELEASE_NAME: ${RELEASE_NAME}"
          echo "RELEASE_NAME=${RELEASE_NAME}" >> $GITHUB_ENV

      - name: Setup Node.js
        uses: actions/setup-node@v4
        with:
          node-version-file: 'backstage/.nvmrc'
          cache: 'yarn'
          cache-dependency-path: 'backstage/yarn.lock'

      - name: Print environment
        run: |
          node --version
          yarn --version

      - name: Install dependencies
        shell: bash
        working-directory: ./backstage
        run: yarn --prefer-offline --frozen-lockfile

      - name: Install tooling
        shell: bash
        working-directory: ./backstage
        run: npm install @backstage/cli -g

      - name: Run tests
        shell: bash
        working-directory: ./backstage
        run: |
          export PATH="./node_modules/.bin/:$PATH"
          yarn test

      - name: Build
        shell: bash
        working-directory: ./backstage
        run: |
          export PATH="./node_modules/.bin/:$PATH"
          yarn tsc
          yarn build:all

      - name: Update version of knative-event-mesh-backend plugin
        # do not run the step on PRs against release-next branch. run it on:
        # PRs against release-* branches, push to release-* branches, and creation of release-* branches
        if: github.event.created || steps.changes.outputs.event_mesh_plugin == 'true'
        shell: bash
        working-directory: ./backstage/plugins/knative-event-mesh-backend
        run: |
          export PATH="./node_modules/.bin/:$PATH"
          yarn version --new-version ${RELEASE_NAME} --no-git-tag-version

      - name: Prepack knative-event-mesh-backend plugin
        shell: bash
        working-directory: ./backstage/plugins/knative-event-mesh-backend
        run: |
          export PATH="./node_modules/.bin/:$PATH"
          yarn prepack

      - name: Publish knative-event-mesh-backend plugin
        uses: JS-DevTools/npm-publish@v3
        # do not run the step on PRs against release-next branch. run it on:
        # PRs against release-* branches, push to release-* branches, and creation of release-* branches
        if: github.event.created || steps.changes.outputs.event_mesh_plugin == 'true'
        with:
          token: ${{ secrets.NPM_TOKEN }}
          access: public
          package: backstage/plugins/knative-event-mesh-backend
          tag: latest

      - name: Postpack knative-event-mesh-backend plugin
        shell: bash
        working-directory: ./backstage/plugins/knative-event-mesh-backend
        run: |
          export PATH="./node_modules/.bin/:$PATH"
          yarn postpack