multiservice-discovery-diff.yaml

name: MSD Diff
on:
  pull_request:
    branches:
      - "main"
    paths:
      - 'rs/ic-observability/multiservice-discovery*/src/**'
jobs:
  setup-runner:
    runs-on: ubuntu-20.04
    steps:
      - uses: actions/checkout@v4
        with:
          ref: ${{ github.event.pull_request.head.ref }}

      - name: "🔧 Setup runner"
        uses: ./.github/workflows/manage-runner-pre

      - name: "📥 Download main test artifact"
        uses: dawidd6/action-download-artifact@v3.0.0
        with:
          name: test-artifacts
          branch: main
          workflow: main.yaml

      - name: "🔭 Compute MSD"
        run: |
          set -exuo pipefail
          mkdir -p tmp/main-registry tmp/branch-registry main-targets branch-targets
          chmod +x multiservice-discovery
          ./multiservice-discovery --targets-dir tmp/main-registry --render-prom-targets-to-stdout > main-targets/targets.json
          bazel run //rs/ic-observability/multiservice-discovery -- --targets-dir $(pwd)/tmp/branch-registry --render-prom-targets-to-stdout > branch-targets/targets.json

      - name: "Check MSD Diff"
        uses: "int128/diff-action@v1"
        with:
          base: /home/runner/work/dre/dre/main-targets
          head: /home/runner/work/dre/dre/branch-targets
          comment-header: ## MSD Diff
          label: prevent-merging-MSD-diff