auto-update-java-agent.yaml

name: Auto-update Java agent

on:
  schedule:
    # Daily at 01:30 (UTC)
    - cron: '30 1 * * *'
  workflow_dispatch:

jobs:
  check-versions:
    runs-on: ubuntu-latest
    outputs:
      current-version: ${{ steps.check-versions.outputs.current-version }}
      latest-version: ${{ steps.check-versions.outputs.latest-version }}
      already-opened: ${{ steps.check-versions.outputs.already-opened }}
    steps:
      - uses: actions/checkout@v4

      - id: check-versions
        name: Check versions
        env:
          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        run: |
          current_version=$(grep -Po "[0-9]+.[0-9]+.[0-9]+" autoinstrumentation/java/version.txt)
          latest_version=$(gh release view \
                               --repo open-telemetry/opentelemetry-java-instrumentation \
                               --json tagName \
                               --jq .tagName \
                             | sed 's/^v//')

          matches=$(gh pr list \
                        --author opentelemetrybot \
                        --state open \
                        --search "in:title \"Update the OpenTelemetry Java agent version to $latest_version\"")
          if [ ! -z "$matches" ]
          then
            already_opened=true
          fi

          echo "current-version=$current_version" >> $GITHUB_OUTPUT
          echo "latest-version=$latest_version" >> $GITHUB_OUTPUT
          echo "already-opened=$already_opened" >> $GITHUB_OUTPUT

  update-java-agent:
    runs-on: ubuntu-latest
    if: |
      needs.check-versions.outputs.current-version != needs.check-versions.outputs.latest-version &&
      needs.check-versions.outputs.already-opened != 'true'
    needs:
      - check-versions
    steps:
      - uses: actions/checkout@v4

      - name: Update version
        env:
          VERSION: ${{ needs.check-versions.outputs.latest-version }}
        run: |
          echo $VERSION > autoinstrumentation/java/version.txt

      - name: Use CLA approved github bot
        run: |
          git config user.name opentelemetrybot
          git config user.email 107717825+opentelemetrybot@users.noreply.github.com

      - name: Create pull request against main
        if: success() || failure()
        env:
          VERSION: ${{ needs.check-versions.outputs.latest-version }}
          # not using secrets.GITHUB_TOKEN since pull requests from that token do not run workflows
          GH_TOKEN: ${{ secrets.OPENTELEMETRYBOT_GITHUB_TOKEN }}
        run: |
          message="Update the OpenTelemetry Java agent version to $VERSION"
          body="Update the OpenTelemetry Java agent version to \`$VERSION\`."
          branch="opentelemetrybot/update-opentelemetry-java-agent-to-${VERSION}"

          git checkout -b $branch
          git commit -a -m "$message"
          git push --set-upstream origin $branch
          gh pr create --title "$message" \
                       --body "$body" \
                       --base main