version: "2017-09-20"
pipeline:
- id: build
  overlay: ci/golang
  cache:
    paths:
    - /go/pkg/mod       # pkg cache for Go modules
    - ~/.cache/go-build # Go build cache
  type: script
  env:
    GOFLAGS: "-mod=readonly"
  commands:
  - desc: test
    cmd: |
      make test
  - desc: build
    cmd: |
      make build.docker
  - desc: push
    cmd: |
      if [[ $CDP_TARGET_BRANCH == master && ! $CDP_PULL_REQUEST_NUMBER ]]; then
        IMAGE=registry-write.opensource.zalan.do/teapot/kube-metrics-adapter
        LATEST_VERSION=$(git describe --tags --always | awk -F \- '{print $1}')
        CUR_PART=$(echo $LATEST_VERSION | awk -F . '{print $1"."$2}')
        VERSION_PART=$(cat VERSION)
        OLD_PATCH=$(echo $LATEST_VERSION | awk -F . '{print $3}')
        NEW_PATCH=$((OLD_PATCH + 1))
        if [ "$CUR_PART" != "$VERSION_PART" ]; then NEW_PATCH=0; fi
        VERSION=${VERSION_PART}.${NEW_PATCH}
        echo "Creating release for tag: ${VERSION}"

      else
        IMAGE=registry-write.opensource.zalan.do/teapot/kube-metrics-adapter-test
        VERSION=$CDP_BUILD_VERSION
      fi
      IMAGE=$IMAGE VERSION=$VERSION make build.docker
      git diff --stat --exit-code
      IMAGE=$IMAGE VERSION=$VERSION make build.push
      if [[ $CDP_TARGET_BRANCH == master && ! $CDP_PULL_REQUEST_NUMBER ]]; then
        echo "create release page"
        tf=$(mktemp)
        echo -e "### Changes\n" >$tf
        git log -1 --pretty=%B | grep -v 'Signed-off-by:' | grep -v -E '^\s*$' | grep -vE '^\*' >>$tf
        echo -e "\n### Docker image\n" >>$tf
        echo -e "Docker image is available in Zalando's Open Source registry:\n" >>$tf
        echo -e '```' >>$tf
        echo -e "docker run -it registry.opensource.zalan.do/teapot/kube-metrics-adapter:${VERSION} --help" >>$tf
        echo -e '```' >>$tf
        echo "################################"
        cat $tf
        echo "################################"
        git gh-release --message-from-file "${tf}" $VERSION
      fi