# Automate code coverage upload to NG3 Metrics bucket
#
# Substitutions:
#   _NG3_BUCKET: where coverage and metadata should be uploaded to reflect in NorthStar, Non-Google3 Metrics owned
#    COMMIT_SHA: most recent commit
#          _REF: target branch
#        _OWNER: email to contact for issues
#
# Schema for bazel test redirection, in output.txt:
#   [bazel server connection logs]
#   [test name, PASSED/FAILED in: xxx]
#   [coverage file location]
#   ...
#   (repeat for every test)
#
# Example:
#   Starting local Bazel server and connecting to it...
#   //src/pkg/config:config_test                                      (cached) PASSED in 0.1s
#   /usr/local/.cache/bazel-out/k8-fastbuild/testlogs/src/pkg/config/config_test/coverage.dat
steps:
  # Use docker container to install bazel
  - name: 'gcr.io/cloud-builders/docker'
    entrypoint: 'bash'
    args:
    - '-c'
    - |
      cat <<EOF | docker build -t bazel -
      FROM gcr.io/cloud-builders/bazel
      RUN apt-get update && apt-get install -y mtools
      EOF
  # Run bash script that builds the metadata.json
  # Run bazel tests and redirect to output.txt
  # Open and merge coverage files found in output.txt
  # Remove duplicate coverage lines
  - name: 'bazel'
    entrypoint: 'bash'
    args:
    - '-c'
    - |
      set -o errexit
      ./coverage/build-metadata.sh
      bazel test --collect_code_coverage --spawn_strategy=standalone -- ... -//src/pkg/tools/... > output.txt
      cat $(grep -A 1 --no-group-separator -E 'PASSED in|FAILED in' output.txt | grep -v -E 'PASSED in|FAILED in') > merged-coverage.txt
      cat -n merged-coverage.txt | sort -uk2 | sort -nk1 | cut -f2- > combined-coverage.out
    env:
      - 'COMMIT_SHA=$COMMIT_SHA'
      - 'REF=$_REF'
      - 'OWNER=$_OWNER'
  # Upload coverage and metadata to NG3 buckets
  - name: 'gcr.io/cloud-builders/gsutil'
    args: ['cp', 'combined-coverage.out', '${_NG3_BUCKET}/$BUILD_ID/combined-coverage.out']
  - name: 'gcr.io/cloud-builders/gsutil'
    args: ['cp', 'metadata.json', '${_NG3_BUCKET}/$BUILD_ID/metadata.json']
options:
  machineType: 'N1_HIGHCPU_8'
  substitutionOption: 'MUST_MATCH'
timeout: '3000s'