continuous-delivery.yml

name: Continuous Delivery

on:
  push:
    tags:
      - 'v*'

env:
  GOLANG_VERSION: '1.16.5'
  DOCKER_REGISTRY: ghcr.io
  DOCKER_REPO: mattfanto/kafkaops-controller

jobs:
  prepare-release:
    name: Perform automatic release on trigger ${{ github.ref }}
    runs-on: ubuntu-latest
    env:
      # The name of the tag as supplied by the GitHub event
      SOURCE_TAG: ${{ github.ref }}

    steps:
      - name: Checkout
        uses: actions/checkout@v2

      - name: Set env vars
        run: |
          set -xue
          
          # target version used for docker image e.g. 0.1.0 or 0.1.0-rc1
          TARGET_VERSION=${SOURCE_TAG#*v}
          if ! echo "${TARGET_VERSION}" | egrep '^[0-9]+\.[0-9]+\.[0-9]+(-rc[0-9]+)*$'; then
            echo "::error::Target version '${TARGET_VERSION}' is malformed, refusing to continue." >&2
            exit 1
          fi
          
          # original tag used for this release
          RELEASE_TAG="${SOURCE_TAG}"
          
          # Whether this is a pre-release (indicated by -rc suffix)
          PRE_RELEASE=false
          if echo "${RELEASE_TAG}" | egrep -- '-rc[0-9]+$'; then
            PRE_RELEASE=true
          fi
          
          # Set the docker image from env  variables
          DOCKER_IMAGE="${DOCKER_REGISTRY}/${DOCKER_REPO}"
          
          echo "DOCKER_IMAGE=${DOCKER_IMAGE}" >> $GITHUB_ENV
          echo "TARGET_VERSION=${TARGET_VERSION}" >> $GITHUB_ENV
          echo "RELEASE_TAG=${RELEASE_TAG}" >> $GITHUB_ENV
          echo "PRE_RELEASE=${PRE_RELEASE}" >> $GITHUB_ENV

      - name: Build push image for release
        uses: docker/build-push-action@v1
        with:
          registry: ${{ env.DOCKER_REGISTRY }}
          username: "mattfanto"
          password: ${{ secrets.GITHUB_TOKEN }}
          repository: ${{ env.DOCKER_REPO }}
          tags: ${{env.TARGET_VERSION}}

      - name: Build manifest
        run: |
          echo "resources: [deployment.yaml]
          apiVersion: kustomize.config.k8s.io/v1beta1
          kind: Kustomization
          images:
          - name: controller
            newName: ${{ env.DOCKER_IMAGE }}
            newTag: ${{ env.TARGET_VERSION }}
          " > artifacts/kustomization.yaml
          
      - name: Build manifest
        run: |
          curl -s "https://raw.githubusercontent.com/kubernetes-sigs/kustomize/master/hack/install_kustomize.sh"  | bash
          ./kustomize build ./artifacts > deployment.yaml

      - name: Create GitHub release
        uses: actions/create-release@v1
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        id: create_release
        with:
          tag_name: ${{ env.RELEASE_TAG }}
          release_name: ${{env.RELEASE_TAG }}
          prerelease: ${{ env.PRE_RELEASE }}

      - name: Upload manifest file
        uses: actions/upload-release-asset@v1
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        with:
          upload_url: ${{ steps.create_release.outputs.upload_url }}
          asset_path: ./deployment.yaml
          asset_name: deployment.yaml
          asset_content_type: application/yaml