# Copyright 2022 The Go Authors. All rights reserved.
# Use of this source code is governed by a BSD-style
# license that can be found in the LICENSE file.

# This is a Cloud Build config file for the go-ecosystem worker.
# Invoke locally from the command line using devtools/deploy.sh.
# It can also be configured to run from a trigger, by supplying the _ENV
# substitution.

substitutions:
  _ENV: ''
  _BQ_DATASET: ''
  _TAG: ''

steps:
  - id: Lock
    name: golang:1.27rc1
    entrypoint: bash
    args:
      - -ec
      - |
        if [[ "$COMMIT_SHA" = '' ]]; then
          echo "no COMMIT_SHA, not locking"
          exit 0
        fi
        go run golang.org/x/website/cmd/locktrigger@latest \
          -project $PROJECT_ID -build $BUILD_ID -repo https://go.googlesource.com/pkgsite-metrics

  - id: Test
    # Run tests. Do this early, to avoid wasting time if they fail.
    name: golang:1.27rc1
    entrypoint: bash
    args:
      - -ec
      - go test ./...

  - id: Prepare
    name: gcr.io/cloud-builders/gcloud
    entrypoint: bash
    args:
      - -ec
      - |
        # Determine the image name and save for later steps.
        if [[ "$SHORT_SHA" = '' ]]; then
          echo >&2 "missing SHORT_SHA; use --substitutions on command line"
          exit 1
        fi
        if [[ "$_ENV" = '' ]]; then
          echo >&2 "missing _ENV; use --substitutions on command line"
          exit 1
        fi
        if [[ "$_BQ_DATASET" = '' ]]; then
          echo >&2 "missing _BQ_DATASET; use --substitutions on command line"
          exit 1
        fi

        tag=$(date +%Y%m%dt%H%M%S)-$SHORT_SHA
        image=gcr.io/$PROJECT_ID/${_ENV}-ecosystem-worker:$tag
        echo "image is $image"
        echo $image > /workspace/image.txt

        # Convert the commented config.json file to valid json.
        sed '/^[ \t]*#/d' config.json.commented > /workspace/config.json

        # Download the vuln DB from its bucket to a local directory, and remember
        # its last-modified time in a file.
        gsutil -m -q cp -r gs://go-vulndb /workspace
        gsutil stat gs://go-vulndb/index.json | \
                awk '$$1 == "Update" { for (i = 4; i <= NF; i++) printf("%s ", $$i); printf("\n"); }' \
                > /workspace/go-vulndb/LAST_MODIFIED
        # Download a tarball of a docker Go image.
        gsutil cp gs://go-ecosystem/go-image.tar.gz /workspace

  - id: Build
    # Build the docker image.
    #
    # The files we put in /workspace in the previous step need to be
    # in the repo root so they get uploaded to the Docker daemon.
    # However it turns out that /workspace is in fact the same directory,
    # so no copying is necessary.
    name: gcr.io/cloud-builders/docker
    entrypoint: bash
    args:
      - -ec
      - |
        image=$(cat /workspace/image.txt)
        docker build -t $image -f cmd/worker/Dockerfile . \
          --build-arg DOCKER_IMAGE=$image \
          --build-arg BQ_DATASET=${_BQ_DATASET} \
          --build-arg SERVICE_ID=${_ENV}-ecosystem-worker
        docker push $image

  - id: Deploy
    name: gcr.io/cloud-builders/gcloud
    entrypoint: bash
    args:
      - -ec
      - |
        image=$(cat /workspace/image.txt)
        service=${_ENV}-ecosystem-worker
        for region in "us-central1" "us-east1"; do
          args="--project $PROJECT_ID --region $region"
          gcloud beta run deploy $args $service --image $image --execution-environment=gen2 \
                          --labels=deploy_tag=${_TAG}
          # If there was a rollback, `gcloud run deploy` will create a revision but
          # not point traffic to it. The following command ensures that the new revision
          # will get traffic.
          latestTraffic=$(gcloud run services $args describe $service \
                          --format='value(status.traffic.latestRevision)')
          if [[ $latestTraffic != True ]]; then
            gcloud run services $args update-traffic $service --to-latest
          fi
        done