config.yml

version: 2
jobs:
  build:
    working_directory: /home/circleci/go/src/github.com/fluxcd/flux
    machine:
      image: ubuntu-2004:202010-01
    resource_class: large
    environment:
      GO_VERSION: 1.17.12
      # We don't need a GOPATH but CircleCI defines it, so we override it
      GOPATH: /home/circleci/go
      GO111MODULE: 'on'
      PATH: /bin:/usr/bin:/usr/local/go/bin:/home/circleci/go/bin
    steps:
      - checkout
      - run:
          name: Install Golang
          command: |
            curl -OL https://storage.googleapis.com/golang/go${GO_VERSION}.linux-amd64.tar.gz
            tar -xf go${GO_VERSION}.linux-amd64.tar.gz
            sudo rm -rf /usr/local/go
            sudo mv go /usr/local
            mkdir -p "$HOME/go/bin"
            rm -rf go${GO_VERSION}.linux-amd64.tar.gz
            go version
      - run:
          name: Update packages and start Memcached
          no_output_timeout: 10m
          command: |
            # Kill any apt-get processes that may be hanging due to
            # networking related issues, and thus holding on to
            # `/var/lib/apt/lists/lock`.
            # https://support.circleci.com/hc/en-us/articles/360021256633-Apt-Get-Update-Is-Slow-Or-Locked
            sudo killall apt-get || true

            sudo apt-get update
            sudo apt-get install -y git rng-tools memcached parallel
            # avoid needing to invoke parallel with --will-cite,
            # see e.g see https://bugs.launchpad.net/ubuntu/+source/parallel/+bug/1779764
            mkdir -p "$HOME/.parallel" && touch "$HOME/.parallel/will-cite"
            git version
            docker version
      - restore_cache:
          keys:
            - cache-{{ checksum "Makefile" }}
            - cache-
      - restore_cache:
          keys:
            - go-build-{{ .Branch }}-{{ .Revision }}
            - go-build-{{ .Branch }}-
            - go-build-
      - restore_cache:
          keys:
            - go-mod-{{ checksum "go.mod" }}
            - go-mod-
      - run: make all
      - save_cache:
          key: cache-{{ checksum "Makefile" }}
          paths:
            - "cache"
      - save_cache:
          key: go-build-{{ .Branch }}-{{ .Revision }}
          paths:
            - "~/.cache/go-build/"
      - save_cache:
          key: go-mod-{{ checksum "go.mod" }}
          paths:
            - "~/go/pkg/mod/"
      - deploy:
          name: Maybe push prerelease images
          command: |
            if [ -z "${CIRCLE_TAG}" -a "${CIRCLE_BRANCH}" == "master" ]; then
              # Re-tag image as prerelease and publish on DockerHub
              echo "$DOCKER_FLUXCD_PASSWORD" | docker login --username "$DOCKER_FLUXCD_USER" --password-stdin
              docker tag "docker.io/fluxcd/flux:$(docker/image-tag)" "docker.io/fluxcd/flux-prerelease:$(docker/image-tag)"
              docker push "docker.io/fluxcd/flux-prerelease:$(docker/image-tag)"
            fi
      - deploy:
          name: Maybe push release images and upload binaries
          command: |
            if echo "${CIRCLE_TAG}" | grep -Eq "^[0-9]+(\.[0-9]+)*(-[a-z0-9]+)?$"; then
              # Publish binaries to GitHub
              go get github.com/github-release/github-release
              make build-fluxctl
              bin/upload-binaries

              # Publish images on DockerHub
              echo "$DOCKER_FLUXCD_PASSWORD" | docker login --username "$DOCKER_FLUXCD_USER" --password-stdin
              docker push "docker.io/fluxcd/flux:${CIRCLE_TAG}"
              docker push "docker.io/fluxcd/fluxctl:${CIRCLE_TAG}"

              # Republish tag with v prefix so it is available to Go Mod
              git config --global user.email fluxcdbot@users.noreply.github.com
              git config --global user.name fluxcdbot

              REPOSITORY="https://fluxcdbot:${GITHUB_TOKEN}@github.com/fluxcd/flux.git"
              git remote set-url origin ${REPOSITORY}

              V_TAG="v${CIRCLE_TAG}"
              git tag ${V_TAG} $(git rev-list -n1 ${CIRCLE_TAG})
              git push origin ${V_TAG}
            fi

workflows:
  version: 2
  build-and-push:
    jobs:
      - build:
          filters:
            tags:
              only: /[0-9]+(\.[0-9]+)*(-[a-z0-9]+)?/