smoke.yml

# Runs all ecosystems cached and concurrently.
name: Smoke

on: # yamllint disable-line rule:truthy
  workflow_dispatch:
  pull_request:
    paths-ignore:
      - docs/**
      - README.md

concurrency:
  group: ${{ github.workflow }}-${{ github.ref }}
  cancel-in-progress: ${{ github.ref != 'refs/heads/main' }}

env:
  GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
  SMOKE_TEST_BRANCH: main
jobs:
  discover:
    runs-on: ubuntu-latest
    outputs:
      suites: ${{ steps.suites.outputs.suites }}
    steps:
      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
        with:
          submodules: recursive

      - uses: dorny/paths-filter@de90cc6fb38fc0963ad72b210f1f284cd68cea36 # v3.0.2
        if: github.event_name != 'workflow_dispatch'
        id: changes
        with:
          token: "" # use git commands to avoid excessive rate limit usage
          filters: .github/smoke-filters.yml

      - name: Generate suites to run
        id: suites
        run: |
          # Write the changes.json file which is an array of paths
          echo "${{ toJson(steps.changes.outputs.changes) }}" > changes.json
          cat changes.json

          # Read smoke-matrix.json, filtering out paths not in changes.json
          jq -c --argjson changes "$(cat changes.json)" '[.[] | select(.core as $p | $changes | index($p))]' .github/smoke-matrix.json > filtered.json
          cat filtered.json

          # Curl the smoke-test tests directory to get a list of tests to run
          URL=https://api.github.com/repos/dependabot/smoke-tests/contents/tests?ref=${{ env.SMOKE_TEST_BRANCH }}
          curl $URL > tests.json

          # Select the names that match smoke-$test*.yaml, where $test is the .text value from filtered.json
          # We end up with, for example: [{core: "bundler", ecosystem: "rubygems", name: "smoke-bundler.yaml"}]
          jq -c '.[]' filtered.json | while read -r i; do
            test=$(echo "$i" | jq -r '.test')
            jq --argjson i "$i" --arg test "-$test" -r '.[] | select(.name | contains($test)) | {core: ($i | .core), ecosystem: ($i | .ecosystem), name: .name, sha: .sha }' tests.json
          done | jq -cs . > suites.json

          # Set the step output
          echo "suites=$(cat suites.json)" >> $GITHUB_OUTPUT
  e2e:
    needs: discover
    runs-on: ubuntu-latest
    strategy:
      fail-fast: false
      matrix:
        suite: ${{ fromJSON(needs.discover.outputs.suites) }}
    steps:
      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
        with:
          submodules: recursive

      - name: Download CLI
        run: |
          gh release download --repo dependabot/cli -p "*linux-amd64.tar.gz"
          tar xzvf *.tar.gz >/dev/null 2>&1
          ./dependabot --version

      - name: Restore Smoke Test
        id: cache-smoke-test
        uses: actions/cache/restore@6849a6489940f00c2f30c0fb92c6274307ccb58a # v4.1.2
        with:
          path: smoke.yaml
          key: ${{ matrix.suite.sha }}-${{ matrix.suite.name }}

      - name: Download test
        if: steps.cache-smoke-test.outputs.cache-hit != 'true'
        run: |
          URL=https://api.github.com/repos/dependabot/smoke-tests/contents/tests/${{ matrix.suite.name }}?ref=${{ env.SMOKE_TEST_BRANCH }}
          curl $(gh api $URL --jq .download_url) -o smoke.yaml

      - name: Cache Smoke Test
        if: steps.cache-smoke-test.outputs.cache-hit != 'true'
        uses: actions/cache/save@6849a6489940f00c2f30c0fb92c6274307ccb58a # v4.1.2
        with:
          path: smoke.yaml
          key: ${{ steps.cache-smoke-test.outputs.cache-primary-key }}

      # Download the Proxy cache. The job is ideally 100% cached so no real calls are made.
      # Allowed to fail to get out of checking and egg situations, for example, when adding a new ecosystem.
      - name: Download cache
        run: |
          # The name of the cache is derived from the test name, e.g. smoke-bundler.yaml -> cache-bundler
          TEST=${{ matrix.suite.name }}
          # Remove the smoke- and the .yaml or .yml suffix
          CACHE=${TEST#smoke-}
          CACHE=${CACHE%.yaml}
          CACHE=${CACHE%.yml}

          gh run download --repo dependabot/smoke-tests --name cache-$CACHE --dir cache
        continue-on-error: true

      - name: Build ecosystem image
        run: script/build ${{ matrix.suite.core }}

      - name: ${{ matrix.suite.core }}
        id: test
        env:
          LOCAL_GITHUB_ACCESS_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        run: |
          set -o pipefail
          ./dependabot test \
            -f=smoke.yaml \
            -o=result.yaml \
            --cache=cache \
            --timeout=20m \
            --updater-image=ghcr.io/dependabot/dependabot-updater-${{ matrix.suite.ecosystem }}:latest \
            2>&1 | tee -a log.txt

      - name: Diff
        continue-on-error: true
        run: diff --ignore-space-change smoke.yaml result.yaml && echo "Contents are identical"

      - name: Create summary
        run: tail -n100 log.txt | grep -P '\d+/\d+ calls cached \(\d+%\)' >> $GITHUB_STEP_SUMMARY

        # No upload at the end:
        # - If a test is uncachable in some regard, the cache would grow unbound.
        # - We might want to consider erroring if the cache is changed.