.github/workflows/fuzzer-tests.yml

# Copyright (C) 2025 The Android Open Source Project
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#      http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

# This workflow is triggered by analyze.yml
# This checks only that fuzzers build. The actual fuzzers run on OSS-Fuzz.
name: Perfetto CI [fuzzer]
on:
  workflow_call:
env:
  # /tmp/cache contains {ccache, bazelcache} and generally any other cache
  # that should be persisted across jobs, but only updated from the main
  # branch. This is populated by the "Restore cache" step below.
  PERFETTO_CACHE_DIR: /tmp/cache
  PERFETTO_ARTIFACTS_ROOT: /tmp/artifacts
  PYTHONUNBUFFERED: 1
jobs:
  fuzzer:
    runs-on: self-hosted
    timeout-minutes: 45
    env:
      PERFETTO_CI_BUILD_CACHE_KEY: build-cache-fuzzer
      PERFETTO_TEST_GN_ARGS: 'is_debug=false is_fuzzer=true is_asan=true cc_wrapper=\"ccache\"'
    steps:
      - uses: actions/checkout@v5

      - name: Restore cache
        uses: ./.github/actions/cache-on-google-cloud-storage/restore
        with:
          directory: ${{ env.PERFETTO_CACHE_DIR }}
          cache_key: ${{ env.PERFETTO_CI_BUILD_CACHE_KEY }}

      - name: Setup ccache
        uses: ./.github/actions/setup-ccache

      - uses: ./.github/actions/install-build-deps

      - name: Run GN
        shell: bash
        run: tools/gn gen out/dist --args="${{ env.PERFETTO_TEST_GN_ARGS }}" --check

      - name: Build
        shell: bash
        run: tools/ninja -C out/dist fuzzers

      - name: Print ccache stats
        shell: bash
        run: ccache --show-stats

      - name: Run single fuzzer iteration
        shell: bash
        run: |
          # Run a single iteration each to make sure they are not crashing.
          for fuzzer in $(find ${OUT_PATH} -name '*_fuzzer' -executable); do
            $fuzzer -runs=1
          done

      - name: Update cache (if on main)
        if: github.ref == 'refs/heads/main'
        uses: ./.github/actions/cache-on-google-cloud-storage/save
        with:
          directory: ${{ env.PERFETTO_CACHE_DIR }}
          cache_key: ${{ env.PERFETTO_CI_BUILD_CACHE_KEY }}