opentelemetry-java-instrumentation/.github/workflows/build-pull-request.yml at main · open-telemetry/opentelemetry-java-instrumentation · GitHub

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name: Build pull request

# Optional test variants (openj9, windows, full smoke) are gated by
# `test openj9`, `test windows`, and `test full smoke` labels on the PR,
# read from the event payload. We
# deliberately do NOT subscribe to `pull_request: [labeled]` — see
# https://github.com/open-telemetry/opentelemetry-java-instrumentation/pull/18446
# for the history of why every previous attempt to use that trigger failed.
#
# Practical consequence: adding a `test openj9`, `test windows`, or
# `test full smoke` label
# doesn't retrigger the build. Push another commit or close/reopen the
# PR to pick it up. `comment-on-test-label.yml` posts a reminder when one
# of those labels is added. `test openj9` and `test full smoke` also disable
# limited app-server selection; `test openj9` enables the OpenJ9 jobs.
#
# `test native` is detected automatically from the PR's changed paths (the
# `resolve-pr-changes` job below). The manual `test native` label is still
# honored as a force-enable.

on:
  pull_request:
    types:
      - opened
      - synchronize
      - reopened

concurrency:
  group: build-pull-request-${{ github.event.pull_request.number }}
  cancel-in-progress: true

permissions:
  contents: read

jobs:
  # Run native tests automatically when the PR touches a library
  # instrumentation module with native support (logback-appender, jdbc,
  # spring), the native smoke test harness, conventions, or the top-level
  # build config, native workflow, or container configuration that affects them.
  #
  # Build the Servlet smoke-test images only when the PR touches the
  # servlet image sources or its workflow definition.
  resolve-pr-changes:
    runs-on: ubuntu-slim
    outputs:
      run-native-tests: ${{ steps.filter.outputs.native }}
      build-servlet-images: ${{ steps.filter.outputs.servlet }}
    steps:
      - name: Detect native- and servlet-image-relevant changes
        id: filter
        env:
          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
          PR_NUMBER: ${{ github.event.pull_request.number }}
        run: |
          files=$(
            gh api --paginate "/repos/${GITHUB_REPOSITORY}/pulls/${PR_NUMBER}/files" \
              --jq '.[].filename'
          )

          # `|| true` so an empty result from `grep -v` (everything filtered)
          # doesn't fail the step under pipefail.
          native_files=$(grep -Ev '^instrumentation/spring/.+/javaagent/' <<<"$files" || true)
          native='^instrumentation/logback/logback-appender-1\.0/library/'
          native+='|^instrumentation/jdbc/library/'
          native+='|^instrumentation/spring/'
          native+='|^smoke-tests-otel-starter/'
          native+='|^conventions/'
          native+='|^dependencyManagement/build\.gradle\.kts$'
          native+='|^settings\.gradle\.kts$'
          native+='|^\.github/workflows/reusable-native-tests\.yml$'
          native+='|^\.github/graal-native-docker-compose\.yaml$'
          if grep -Eq "$native" <<<"$native_files"; then
            echo "native=true" >> "$GITHUB_OUTPUT"
          else
            echo "native=false" >> "$GITHUB_OUTPUT"
          fi

          servlet='^smoke-tests/images/servlet/'
          servlet+='|^\.github/workflows/reusable-build-servlet-images\.yml$'
          if grep -Eq "$servlet" <<<"$files"; then
            echo "servlet=true" >> "$GITHUB_OUTPUT"
          else
            echo "servlet=false" >> "$GITHUB_OUTPUT"
          fi

  build:
    needs: resolve-pr-changes
    uses: $/.github/workflows/reusable-pr-build.yml
    with:
      skip-native-tests: ${{ !(needs.resolve-pr-changes.outputs.run-native-tests == 'true' || contains(github.event.pull_request.labels.*.name, 'test native')) }}
      skip-openj9-tests: ${{ !contains(github.event.pull_request.labels.*.name, 'test openj9') }}
      skip-windows-smoke-tests: ${{ !contains(github.event.pull_request.labels.*.name, 'test windows') }}
      limited-appserver-matrix: ${{ !contains(github.event.pull_request.labels.*.name, 'test full smoke') && !contains(github.event.pull_request.labels.*.name, 'test openj9') }}
      skip-servlet-images: ${{ needs.resolve-pr-changes.outputs.build-servlet-images != 'true' }}