name: Continuous Integration
run-name: Triggered by ${{ github.actor }} on ${{ github.event_name }}
on:
  pull_request:
  merge_group:
    types: [checks_requested]
  workflow_dispatch:
  workflow_call:
    inputs:
      stage:
        required: true
        type: string
      profile:
        required: true
        type: string

# Cancel old workflow runs if new code is pushed
concurrency:
  group: "ci-${{ github.event_name }}-${{ github.workflow }}-${{ github.ref }}"
  cancel-in-progress: ${{ github.event_name != 'workflow_call' }}

jobs:
  planner:
    runs-on: ubuntu-latest
    outputs:
      jobs_to_run: ${{ steps.plan.outputs.jobs_to_run }}
    steps:
      - uses: actions/checkout@v5
      - name: Plan jobs to run
        id: plan
        run: |
          set -e

          jobs="static-analysis,elixir,rust,tauri,kotlin,swift,codeql,control-plane,data-plane,data-plane-perf";

          # For workflow_dispatch or workflow_call, run all jobs
          if [ "${{ github.event_name }}" = "workflow_dispatch" ] || [ "${{ github.event_name }}" = "workflow_call" ]; then
            echo "jobs_to_run=$jobs" >> "$GITHUB_OUTPUT"

            exit 0;
          fi

          # For main branch runs, run all jobs
          if [ "${{ github.event_name }}" = "push" ] && [ "${{ github.ref_name }}" = "main" ]; then
            echo "jobs_to_run=$jobs" >> "$GITHUB_OUTPUT"

            exit 0;
          fi

          # For merge group, run all jobs
          if [ "${{ github.event_name }}" = "merge_group" ]; then
            echo "jobs_to_run=$jobs" >> "$GITHUB_OUTPUT"

            exit 0;
          fi

          # Fetch base ref for PRs
          if [ "${{ github.event_name }}" = "pull_request" ]; then
            git fetch origin ${{ github.base_ref }} --depth=1
            git diff --name-only origin/${{ github.base_ref }} ${{ github.sha }} > changed_files.txt

            echo "Changed files:"
            cat changed_files.txt
          fi

          # Run all jobs if CI configuration changes
          if grep -q '^\.github/' changed_files.txt; then
            echo "jobs_to_run=$jobs" >> "$GITHUB_OUTPUT"
            exit 0;
          fi

          # Run all jobs if tool versions change
          if grep -q '^\.tool-versions' changed_files.txt; then
            echo "jobs_to_run=$jobs" >> "$GITHUB_OUTPUT"
            exit 0;
          fi

          # Run all jobs if docker-compose changes
          if grep -q '^docker-compose.yml' changed_files.txt; then
            echo "jobs_to_run=$jobs" >> "$GITHUB_OUTPUT"
            exit 0;
          fi

          jobs="static-analysis" # Always run static-analysis

          if grep -q '^rust/' changed_files.txt; then
            jobs="${jobs},rust,kotlin,swift,control-plane,data-plane,data-plane-perf"
          fi
          if grep -q '^rust/gui-client/' changed_files.txt; then
            jobs="${jobs},tauri"
          fi
          if grep -q '^rust/tests/gui-smoke-test/' changed_files.txt; then
            jobs="${jobs},tauri"
          fi
          if grep -q '^elixir/' changed_files.txt; then
            jobs="${jobs},elixir,codeql,control-plane,data-plane"
          fi
          if grep -q '^kotlin/' changed_files.txt; then
            jobs="${jobs},kotlin"
          fi
          if grep -q '^swift/' changed_files.txt; then
            jobs="${jobs},swift"
          fi
          if grep -q '^website/' changed_files.txt; then
            jobs="${jobs},codeql"
          fi
          if grep -q '^scripts/tests/' changed_files.txt; then
            jobs="${jobs},control-plane,data-plane,data-plane-perf"
          fi

          echo "jobs_to_run=$jobs" >> "$GITHUB_OUTPUT"

  required-check:
    name: required-check
    needs:
      [
        kotlin,
        swift,
        elixir,
        rust,
        tauri,
        static-analysis,
        codeql,
        control-plane,
        data-plane,
        data-plane-perf,
        integration-tests,
        compatibility-tests,
        perf-tests,
      ]
    if: always()
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v5
      - name: Check if all jobs are successful
        env:
          GH_TOKEN: ${{ github.token }}
        run: |
          set -e

          jobs_json=$(gh run view ${{ github.run_id }} --json jobs --jq '.jobs | map(select((.name | contains("required-check") | not) and (.name | contains("upload-bencher") | not)))')
          failed_jobs=$(echo "$jobs_json" | jq -r '[.[] | select(.conclusion == "failure")] | length')

          if [ "$failed_jobs" -gt 0 ]; then
            echo "At least one job has failed."
            exit 1
          fi

  kotlin:
    needs: planner
    if: contains(needs.planner.outputs.jobs_to_run, 'kotlin')
    uses: ./.github/workflows/_kotlin.yml
    secrets: inherit
  swift:
    needs: planner
    if: contains(needs.planner.outputs.jobs_to_run, 'swift')
    uses: ./.github/workflows/_swift.yml
    secrets: inherit
  elixir:
    needs: planner
    if: contains(needs.planner.outputs.jobs_to_run, 'elixir')
    uses: ./.github/workflows/_elixir.yml
    secrets: inherit
  rust:
    needs: planner
    if: contains(needs.planner.outputs.jobs_to_run, 'rust')
    uses: ./.github/workflows/_rust.yml
    secrets: inherit
  tauri:
    needs: planner
    if: contains(needs.planner.outputs.jobs_to_run, 'tauri')
    uses: ./.github/workflows/_tauri.yml
    secrets: inherit
  static-analysis:
    needs: planner
    if: contains(needs.planner.outputs.jobs_to_run, 'static-analysis')
    uses: ./.github/workflows/_static-analysis.yml
    secrets: inherit
  codeql:
    needs: planner
    if: contains(needs.planner.outputs.jobs_to_run, 'codeql')
    uses: ./.github/workflows/_codeql.yml
    secrets: inherit

  control-plane:
    needs: planner
    if: contains(needs.planner.outputs.jobs_to_run, 'control-plane')
    uses: ./.github/workflows/_control-plane.yml
    secrets: inherit

  data-plane:
    needs: planner
    if: contains(needs.planner.outputs.jobs_to_run, 'data-plane')
    uses: ./.github/workflows/_data-plane.yml
    secrets: inherit
    with:
      # Build debug/ on PRs and merge group, no prefix for production release images
      image_prefix: ${{ ((github.event_name == 'pull_request' || github.event_name == 'merge_group') && 'debug') || '' }}
      profile: ${{ inputs.profile || 'debug' }}
      stage: ${{ inputs.stage || 'debug' }}

  data-plane-perf:
    needs: planner
    if: contains(needs.planner.outputs.jobs_to_run, 'data-plane-perf')
    uses: ./.github/workflows/_data-plane.yml
    secrets: inherit
    with:
      sha: ${{ github.sha }}
      image_prefix: "perf"
      profile: "release"
      stage: "debug" # Only the debug images have perf tooling

  integration-tests:
    uses: ./.github/workflows/_integration_tests.yml
    needs: [control-plane, data-plane]
    secrets: inherit
    with:
      gateway_image: ${{ needs.data-plane.outputs.gateway_image }}
      client_image: ${{ needs.data-plane.outputs.client_image }}
      relay_image: ${{ needs.data-plane.outputs.relay_image }}
      http_test_server_image: ${{ needs.data-plane.outputs.http_test_server_image }}

  compatibility-tests:
    strategy:
      fail-fast: ${{ github.event_name == 'merge_group' }}
      matrix:
        client:
          - image: "ghcr.io/firezone/client"
            tag: "latest"
        gateway:
          - image: ${{ needs.data-plane.outputs.gateway_image }}
            tag: ${{ github.sha }}
            ci-name: sha
          - image: "ghcr.io/firezone/gateway"
            tag: "latest"
            ci-name: latest
    # Don't run compatibility tests when called from hotfix.yml or publish.yml on `main` because
    # it'll be red if there was a breaking change we're trying to publish,
    # and the deploy_production workflow checks for main to be green.
    if: ${{ github.event_name == 'pull_request' || github.event_name == 'merge_group' }}
    name: compatibility-tests-client(${{ matrix.client.tag }})-gateway(${{ matrix.gateway.ci-name }})
    uses: ./.github/workflows/_integration_tests.yml
    needs: [control-plane, data-plane]
    secrets: inherit
    with:
      gateway_image: ${{ matrix.gateway.image }}
      gateway_tag: ${{ matrix.gateway.tag }}
      client_image: ${{ matrix.client.image }}
      client_tag: ${{ matrix.client.tag }}

  perf-tests:
    name: perf-tests
    needs: [control-plane, data-plane-perf]
    runs-on: ubuntu-24.04
    permissions:
      contents: read
      id-token: write
      pull-requests: write
    env:
      API_IMAGE: "ghcr.io/firezone/api"
      API_TAG: ${{ github.sha }}
      WEB_IMAGE: "ghcr.io/firezone/web"
      WEB_TAG: ${{ github.sha }}
      ELIXIR_IMAGE: "ghcr.io/firezone/elixir"
      ELIXIR_TAG: ${{ github.sha }}
      GATEWAY_IMAGE: "ghcr.io/firezone/perf/gateway"
      GATEWAY_TAG: ${{ github.sha }}
      CLIENT_IMAGE: "ghcr.io/firezone/perf/client"
      CLIENT_TAG: ${{ github.sha }}
      RELAY_IMAGE: "ghcr.io/firezone/perf/relay"
      RELAY_TAG: ${{ github.sha }}
      FIREZONE_INC_BUF: true
    strategy:
      fail-fast: ${{ github.event_name == 'merge_group' }}
      matrix:
        test:
          - tcp-client2server
          - tcp-server2client
          - udp-client2server
          - udp-server2client
        flavour:
          - direct
          - relayed
    steps:
      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
      - uses: ./.github/actions/ghcr-docker-login
        with:
          github_token: ${{ secrets.GITHUB_TOKEN }}
      - uses: ./.github/actions/setup-docker
      - name: Seed database
        run: docker compose run elixir /bin/sh -c 'cd apps/domain && mix ecto.migrate --migrations-path priv/repo/migrations --migrations-path priv/repo/manual_migrations && mix ecto.seed'
      - name: Increase max UDP buffer sizes
        run: |
          sudo sysctl -w net.core.wmem_max=16777216 # 16 MB
          sudo sysctl -w net.core.rmem_max=134217728 # 128 MB
      - name: Start docker compose in the background
        run: |
          if [ "${{ matrix.flavour }}" = "relayed" ]; then
            echo "CLIENT_MASQUERADE=random" >> "$GITHUB_ENV"
            echo "UDP_BITRATE=300M" >> "$GITHUB_ENV"
          fi

          docker compose build client-router gateway-router relay-1-router relay-2-router api-router

          # Start services in the same order each time for the tests
          docker compose up -d iperf3
          docker compose up -d api web domain --no-build
          docker compose up -d relay-1 relay-2 --no-build
          docker compose up -d gateway --no-build
          docker compose up -d client --no-build
          docker compose up -d network-config
      - name: "Performance test: ${{ matrix.flavour }}-${{ matrix.test }}"
        timeout-minutes: 5
        env:
          TEST_NAME: ${{ matrix.flavour }}-${{ matrix.test }}
        run: |
          ./scripts/tests/perf/${{ matrix.test }}.sh
          jq '{ "${{ matrix.flavour }}-${{ matrix.test }}": { "retransmits": { "value": (.end.sum_sent.retransmits // -1) }, "throughput": { "value": .end.sum_received.bits_per_second } } }' ./${{ matrix.flavour }}-${{ matrix.test }}.json > ./${{ matrix.flavour }}-${{ matrix.test }}.bmf.json
      - name: "Save performance test results: ${{ matrix.flavour }}-${{ matrix.test }}"
        uses: actions/upload-artifact@330a01c490aca151604b8cf639adc76d48f6c5d4 # v5.0.0
        with:
          overwrite: true
          name: ${{ matrix.flavour }}-${{ matrix.test }}-${{ github.sha }}-iperf3results
          path: ./${{ matrix.flavour }}-${{ matrix.test }}.bmf.json
      - name: Show Client logs
        if: "!cancelled()"
        run: docker compose logs client
      - name: Show Relay-1 logs
        if: "!cancelled()"
        run: docker compose logs relay-1
      - name: Show Relay-2 logs
        if: "!cancelled()"
        run: docker compose logs relay-2
      - name: Show Gateway logs
        if: "!cancelled()"
        run: docker compose logs gateway
      - name: Show API logs
        if: "!cancelled()"
        run: docker compose logs api
      - name: Show iperf3 logs
        if: "!cancelled()"
        run: docker compose logs iperf3

      - name: Ensure no warnings are logged
        if: "!cancelled()"
        run: |
          docker compose logs client |
            grep "WARN" && exit 1 || exit 0

          docker compose logs gateway |
            grep "WARN" && exit 1 || exit 0

          # BTF doesn't load for veth interfaces
          docker compose logs relay-1 | \
            grep --invert "Object BTF couldn't be loaded in the kernel: the BPF_BTF_LOAD syscall failed." | \
            grep "WARN" && exit 1 || exit 0
          docker compose logs relay-2 | \
            grep --invert "Object BTF couldn't be loaded in the kernel: the BPF_BTF_LOAD syscall failed." | \
            grep "WARN" && exit 1 || exit 0

      - name: Ensure no UDP socket errors
        if: "!cancelled() && startsWith(matrix.test, 'tcp')"
        run: |
          docker compose exec client /bin/sh -c 'nstat -s' |
            grep -i "error" && exit 1 || exit 0

          docker compose exec gateway /bin/sh -c 'nstat -s' |
            grep -i "error" && exit 1 || exit 0

  upload-bencher:
    continue-on-error: true
    needs: perf-tests
    runs-on: ubuntu-24.04
    permissions:
      contents: read
      id-token: write
      pull-requests: write
      checks: write
    steps:
      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
      - uses: bencherdev/bencher@main
      - name: Download performance test results
        uses: actions/download-artifact@018cc2cf5baa6db3ef3c5f8a56943fffe632ef53 # v6.0.0
        with:
          pattern: "*-${{ github.sha }}-iperf3results"
          merge-multiple: true
          path: ./${{ github.sha }}
      - name: Merge benchmarks results into one report
        run: jq -s 'reduce .[] as $item ({}; . * $item)' ./${{ github.sha }}/*.bmf.json > bmf.json
      - name: Report results to bencher
        run: |
          bencher run \
            --project firezone-1l75jv1z \
            --testbed github-actions \
            --file bmf.json \
            --adapter json \
            --branch "${{ env.BRANCH }}" \
            --branch-start-point "${{ github.base_ref }}" \
            --github-actions ${{ secrets.GITHUB_TOKEN }} \
            --ci-only-on-alert
        env:
          BENCHER_API_TOKEN: ${{ secrets.BENCHER_API_TOKEN }}
          BRANCH: "${{ github.head_ref || github.ref_name }}"