# Runs Bloaty (size test) and Google Benchmark and reports results on PR
name: pr-linux-tests

on:
  workflow_run:
    workflows: [linux-ci]
    types:
      - completed
env:
  download_url: https://maplibre-native.s3.eu-central-1.amazonaws.com
  legacy_maplibre_sha: d38709084a9865fe0bb8300aec70ebf8243b3d43
  bloaty_sha: 8be8b448550b37c978e8defd9d421c0464c52cc7

permissions:
  pull-requests: write
  id-token: write      # This is required for requesting the AWS JWT

jobs:
  pre_job:
    if: github.event.workflow_run.event == 'pull_request'
    runs-on: ubuntu-latest
    outputs:
      should_skip: ${{ steps.parent_workflow.outputs.was_skipped_or_cancelled }}
    steps:
      - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
        with:
          sparse-checkout: |
            .github
            .nvmrc
          persist-credentials: false

      - uses: actions/setup-node@820762786026740c76f36085b0efc47a31fe5020 # v7.0.0
        with:
          node-version-file: '.nvmrc'

      - run: npm install

      - name: Get parent workflow result
        id: parent_workflow
        run: node .github/scripts/check-job-skipped.ts
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
          TEST_RUN_ID: ${{ github.event.workflow_run.id }}
          JOB_NAME: linux-build-and-test

  pr-bloaty:
    needs: pre_job
    if: needs.pre_job.outputs.should_skip == 'false'
    runs-on: ubuntu-24.04
    steps:
      - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
        with:
          persist-credentials: false

      - uses: ./.github/actions/get-pr-number
        id: get-pr-number

      - uses: ./.github/actions/download-workflow-run-artifact
        with:
          artifact-name: mbgl-render
          expect-files: "mbgl-render"

      - name: Download mbgl-render-main
        run: wget -O mbgl-render-main "${download_url}/mbgl-render-main"

      - name: Download mbgl-render-legacy
        id: download-mbgl-render-legacy
        run: wget -O mbgl-render-legacy "${download_url}/mbgl-render-${legacy_maplibre_sha}"
        continue-on-error: true

      - name: Cache Bloaty
        id: cache-bloaty
        uses: actions/cache@55cc8345863c7cc4c66a329aec7e433d2d1c52a9 # v6.1.0
        with:
          path: bloaty/build/bloaty
          key: bloaty-${{ env.bloaty_sha }}

      # because Google is not making a release...
      # https://github.com/google/bloaty/issues/334
      - name: Compile Bloaty
        if: ${{ !steps.cache-bloaty.outputs.cache-hit }}
        run: |
          git clone https://github.com/google/bloaty.git
          cd bloaty
          git checkout "$bloaty_sha"
          cmake -B build -G Ninja -S .
          cmake --build build

      - name: Run Bloaty McBloatface on main
        run: bloaty/build/bloaty mbgl-render -- mbgl-render-main -n 0 -s vm -d compileunits > tlus_diff_main.txt

      - name: Run Bloaty McBloatface on legacy
        if: steps.download-mbgl-render-legacy.outcome == 'success'
        run: bloaty/build/bloaty mbgl-render -- mbgl-render-legacy -n 0 -s vm -d compileunits > tlus_diff_legacy.txt

      - name: Configure AWS Credentials
        if: github.ref == 'refs/heads/main' && vars.OIDC_AWS_ROLE_TO_ASSUME
        uses: aws-actions/configure-aws-credentials@e6de054238d6b7531b4efff3b6587d9aade6a06c # v6.2.3
        with:
          aws-region: us-west-2
          role-to-assume: ${{ vars.OIDC_AWS_ROLE_TO_ASSUME }}
          role-session-name: ${{ github.run_id }}

      - name: Prepare Bloaty message (main)
        run: |
          report_path=bloaty-results/pr-${{ steps.get-pr-number.outputs.pr-number }}-compared-to-main.txt
          aws s3 cp tlus_diff_main.txt s3://maplibre-native/"$report_path"
          {
            echo "# Bloaty Results 🐋"
            echo 'Compared to main'
            echo '```'
            awk 'NR <= 2; END { print }' tlus_diff_main.txt
            echo '```'
            echo "Full report: $download_url/$report_path"
            echo "---"
          } >> message.md

      - name: Prepare Bloaty message (legacy)
        run: |
          report_path=bloaty-results/pr-${{ steps.get-pr-number.outputs.pr-number }}-compared-to-legacy.txt
          aws s3 cp tlus_diff_legacy.txt s3://maplibre-native/"$report_path"
          {
            echo "Compared to $legacy_maplibre_sha (legacy)"
            echo '```'
            awk 'NR <= 2; END { print }' tlus_diff_legacy.txt
            echo '```'
            echo "Full report: $download_url/$report_path"
          } >> message.md

      - name: Leave a comment with Bloaty results
        uses: marocchino/sticky-pull-request-comment@5770ad5eb8f42dd2c4f34da00c94c5381e49af88 # v3.0.5
        with:
          number: ${{ steps.get-pr-number.outputs.pr-number }}
          header: bloaty
          path: message.md

  pr-benchmark:
    needs: pre_job
    if: needs.pre_job.outputs.should_skip == 'false'
    runs-on: ubuntu-24.04
    steps:
      - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
        with:
          submodules: true
          persist-credentials: false

      - uses: ./.github/actions/get-pr-number
        id: get-pr-number

      - uses: ./.github/actions/download-workflow-run-artifact
        with:
          artifact-name: mbgl-benchmark-runner
          expect-files: "mbgl-benchmark-runner"

      - name: Download mbgl-benchmark-runner-main, set permissions
        run: |
          wget -O mbgl-benchmark-runner-main "${download_url}/mbgl-benchmark-runner-main"
          chmod +x mbgl-benchmark-runner-main mbgl-benchmark-runner

      # needed for compare.py
      - name: Install scipy
        run: pip3 install scipy

      - name: Install dependencies
        run: .github/scripts/install-linux-deps

      - name: Run Benchmarks
        # excluding the API tests because they hang https://github.com/maplibre/maplibre-native/issues/1808
        run: python3 vendor/benchmark/tools/compare.py --no-color benchmarks ./mbgl-benchmark-runner-main ./mbgl-benchmark-runner --benchmark_filter='^[^A][^P][^I].*' > benchmark_out.txt

      - name: Configure AWS Credentials
        if: github.ref == 'refs/heads/main' && vars.OIDC_AWS_ROLE_TO_ASSUME
        uses: aws-actions/configure-aws-credentials@e6de054238d6b7531b4efff3b6587d9aade6a06c # v6.2.3
        with:
          aws-region: us-west-2
          role-to-assume: ${{ vars.OIDC_AWS_ROLE_TO_ASSUME }}
          role-session-name: ${{ github.run_id }}

      - name: Prepare Benchmark message
        run: |
          sed -n '/Comparing/,$p' benchmark_out.txt | tail -n +2 > benchmark_diff.txt
          report_path=benchmark-results/pr-${{ steps.get-pr-number.outputs.pr-number }}-compared-to-main.txt
          aws s3 cp benchmark_diff.txt s3://maplibre-native/"$report_path"
          {
            echo "Benchmark Results ⚡"
            echo '```'
            awk 'NR <= 2; END { print }' benchmark_diff.txt
            echo '```'
            echo "Full report: $download_url/$report_path"
          } >> message.md

      - name: Leave a comment with Benchmark results
        uses: marocchino/sticky-pull-request-comment@5770ad5eb8f42dd2c4f34da00c94c5381e49af88 # v3.0.5
        with:
          number: ${{ steps.get-pr-number.outputs.pr-number }}
          header: benchmark
          path: message.md