name: Tests

on:
  push:
    branches: ["develop", "release-*"]
  pull_request:
  merge_group:
  workflow_dispatch:

concurrency:
  group: ${{ github.workflow }}-${{ github.ref }}
  cancel-in-progress: true

jobs:
  # Job to detect what has changed so we don't run e.g. Rust checks on PRs that
  # don't modify Rust code.
  changes:
    runs-on: ubuntu-latest
    outputs:
      rust: ${{ !startsWith(github.ref, 'refs/pull/') || steps.filter.outputs.rust }}
      trial: ${{ !startsWith(github.ref, 'refs/pull/') || steps.filter.outputs.trial }}
      integration: ${{ !startsWith(github.ref, 'refs/pull/') || steps.filter.outputs.integration }}
      linting: ${{ !startsWith(github.ref, 'refs/pull/') || steps.filter.outputs.linting }}
    steps:
    - uses: dorny/paths-filter@v2
      id: filter
      # We only check on PRs
      if: startsWith(github.ref, 'refs/pull/')
      with:
        filters: |
          rust:
            - 'rust/**'
            - 'Cargo.toml'
            - 'Cargo.lock'
            - '.rustfmt.toml'
            - '.github/workflows/tests.yml'

          trial:
            - 'synapse/**'
            - 'tests/**'
            - 'rust/**'
            - '.ci/scripts/calculate_jobs.py'
            - 'Cargo.toml'
            - 'Cargo.lock'
            - 'pyproject.toml'
            - 'poetry.lock'
            - '.github/workflows/tests.yml'

          integration:
            - 'synapse/**'
            - 'rust/**'
            - 'docker/**'
            - 'Cargo.toml'
            - 'Cargo.lock'
            - 'pyproject.toml'
            - 'poetry.lock'
            - 'docker/**'
            - '.ci/**'
            - 'scripts-dev/complement.sh'
            - '.github/workflows/tests.yml'

          linting:
            - 'synapse/**'
            - 'docker/**'
            - 'tests/**'
            - 'scripts-dev/**'
            - 'contrib/**'
            - 'synmark/**'
            - 'stubs/**'
            - '.ci/**'
            - 'mypy.ini'
            - 'pyproject.toml'
            - 'poetry.lock'
            - '.github/workflows/tests.yml'

  check-sampleconfig:
    runs-on: ubuntu-latest
    needs: changes
    if: ${{ needs.changes.outputs.linting == 'true' }}

    steps:
      - uses: actions/checkout@v4
      - name: Install Rust
        uses: dtolnay/rust-toolchain@1.61.0
      - uses: Swatinem/rust-cache@v2
      - uses: matrix-org/setup-python-poetry@v1
        with:
          python-version: "3.x"
          poetry-version: "1.3.2"
          extras: "all"
      - run: poetry run scripts-dev/generate_sample_config.sh --check
      - run: poetry run scripts-dev/config-lint.sh

  check-schema-delta:
    runs-on: ubuntu-latest
    needs: changes
    if: ${{ needs.changes.outputs.linting == 'true' }}

    steps:
      - uses: actions/checkout@v4
      - uses: actions/setup-python@v5
        with:
          python-version: "3.x"
      - run: "pip install 'click==8.1.1' 'GitPython>=3.1.20'"
      - run: scripts-dev/check_schema_delta.py --force-colors

  check-lockfile:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
      - uses: actions/setup-python@v5
        with:
          python-version: "3.x"
      - run: .ci/scripts/check_lockfile.py

  lint:
    runs-on: ubuntu-latest
    needs: changes
    if: ${{ needs.changes.outputs.linting == 'true' }}

    steps:
      - name: Checkout repository
        uses: actions/checkout@v4

      - name: Setup Poetry
        uses: matrix-org/setup-python-poetry@v1
        with:
          install-project: "false"

      - name: Import order (isort)
        run: poetry run isort --check --diff .

      - name: Code style (black)
        run: poetry run black --check --diff .

      - name: Semantic checks (ruff)
        # --quiet suppresses the update check.
        run: poetry run ruff --quiet .

  lint-mypy:
    runs-on: ubuntu-latest
    name: Typechecking
    needs: changes
    if: ${{ needs.changes.outputs.linting == 'true' }}

    steps:
      - name: Checkout repository
        uses: actions/checkout@v4

      - name: Install Rust
        uses: dtolnay/rust-toolchain@1.61.0
      - uses: Swatinem/rust-cache@v2

      - name: Setup Poetry
        uses: matrix-org/setup-python-poetry@v1
        with:
          # We want to make use of type hints in optional dependencies too.
          extras: all
          # We have seen odd mypy failures that were resolved when we started
          # installing the project again:
          # https://github.com/matrix-org/synapse/pull/15376#issuecomment-1498983775
          # To make CI green, err towards caution and install the project.
          install-project: "true"

      # Cribbed from
      # https://github.com/AustinScola/mypy-cache-github-action/blob/85ea4f2972abed39b33bd02c36e341b28ca59213/src/restore.ts#L10-L17
      - name: Restore/persist mypy's cache
        uses: actions/cache@v3
        with:
          path: |
            .mypy_cache
          key: mypy-cache-${{ github.context.sha }}
          restore-keys: mypy-cache-

      - name: Run mypy
        run: poetry run mypy

  lint-crlf:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
      - name: Check line endings
        run: scripts-dev/check_line_terminators.sh

  lint-newsfile:
    if: ${{ (github.base_ref == 'develop'  || contains(github.base_ref, 'release-')) && github.actor != 'dependabot[bot]' }}
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
        with:
          ref: ${{ github.event.pull_request.head.sha }}
          fetch-depth: 0
      - uses: actions/setup-python@v5
        with:
          python-version: "3.x"
      - run: "pip install 'towncrier>=18.6.0rc1'"
      - run: scripts-dev/check-newsfragment.sh
        env:
          PULL_REQUEST_NUMBER: ${{ github.event.number }}

  lint-pydantic:
    runs-on: ubuntu-latest
    needs: changes
    if: ${{ needs.changes.outputs.linting == 'true' }}

    steps:
      - uses: actions/checkout@v4
        with:
          ref: ${{ github.event.pull_request.head.sha }}
      - name: Install Rust
        uses: dtolnay/rust-toolchain@1.61.0
      - uses: Swatinem/rust-cache@v2
      - uses: matrix-org/setup-python-poetry@v1
        with:
          poetry-version: "1.3.2"
          extras: "all"
      - run: poetry run scripts-dev/check_pydantic_models.py

  lint-clippy:
    runs-on: ubuntu-latest
    needs: changes
    if: ${{ needs.changes.outputs.rust == 'true' }}

    steps:
      - uses: actions/checkout@v4

      - name: Install Rust
        uses: dtolnay/rust-toolchain@1.61.0
        with:
            components: clippy
      - uses: Swatinem/rust-cache@v2

      - run: cargo clippy -- -D warnings

  # We also lint against a nightly rustc so that we can lint the benchmark
  # suite, which requires a nightly compiler.
  lint-clippy-nightly:
    runs-on: ubuntu-latest
    needs: changes
    if: ${{ needs.changes.outputs.rust == 'true' }}

    steps:
      - uses: actions/checkout@v4

      - name: Install Rust
        uses: dtolnay/rust-toolchain@master
        with:
            toolchain: nightly-2022-12-01
            components: clippy
      - uses: Swatinem/rust-cache@v2

      - run: cargo clippy --all-features -- -D warnings

  lint-rustfmt:
    runs-on: ubuntu-latest
    needs: changes
    if: ${{ needs.changes.outputs.rust == 'true' }}

    steps:
      - uses: actions/checkout@v4

      - name: Install Rust
        uses: dtolnay/rust-toolchain@master
        with:
          # We use nightly so that it correctly groups together imports
          toolchain: nightly-2022-12-01
          components: rustfmt
      - uses: Swatinem/rust-cache@v2

      - run: cargo fmt --check

  # Dummy step to gate other tests on without repeating the whole list
  linting-done:
    if: ${{ !cancelled() }} # Run this even if prior jobs were skipped
    needs:
      - lint
      - lint-mypy
      - lint-crlf
      - lint-newsfile
      - lint-pydantic
      - check-sampleconfig
      - check-schema-delta
      - check-lockfile
      - lint-clippy
      - lint-clippy-nightly
      - lint-rustfmt
    runs-on: ubuntu-latest
    steps:
      - uses: matrix-org/done-action@v2
        with:
          needs: ${{ toJSON(needs) }}

          # Various bits are skipped if there was no applicable changes.
          skippable: |
            check-sampleconfig
            check-schema-delta
            lint
            lint-mypy
            lint-newsfile
            lint-pydantic
            lint-clippy
            lint-clippy-nightly
            lint-rustfmt


  calculate-test-jobs:
    if: ${{ !cancelled() && !failure() }} # Allow previous steps to be skipped, but not fail
    needs: linting-done
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
      - uses: actions/setup-python@v5
        with:
          python-version: "3.x"
      - id: get-matrix
        run: .ci/scripts/calculate_jobs.py
    outputs:
      trial_test_matrix: ${{ steps.get-matrix.outputs.trial_test_matrix }}
      sytest_test_matrix: ${{ steps.get-matrix.outputs.sytest_test_matrix }}

  trial:
    if: ${{ !cancelled() && !failure() && needs.changes.outputs.trial == 'true' }} # Allow previous steps to be skipped, but not fail
    needs:
      - calculate-test-jobs
      - changes
    runs-on: ubuntu-latest
    strategy:
      matrix:
        job:  ${{ fromJson(needs.calculate-test-jobs.outputs.trial_test_matrix) }}

    steps:
      - uses: actions/checkout@v4
      - run: sudo apt-get -qq install xmlsec1
      - name: Set up PostgreSQL ${{ matrix.job.postgres-version }}
        if: ${{ matrix.job.postgres-version }}
        # 1. Mount postgres data files onto a tmpfs in-memory filesystem to reduce overhead of docker's overlayfs layer.
        # 2. Expose the unix socket for postgres. This removes latency of using docker-proxy for connections.
        run: |
          docker run -d -p 5432:5432 \
            --tmpfs /var/lib/postgres:rw,size=6144m \
            --mount 'type=bind,src=/var/run/postgresql,dst=/var/run/postgresql' \
            -e POSTGRES_PASSWORD=postgres \
            -e POSTGRES_INITDB_ARGS="--lc-collate C --lc-ctype C --encoding UTF8" \
            postgres:${{ matrix.job.postgres-version }}

      - name: Install Rust
        uses: dtolnay/rust-toolchain@1.61.0
      - uses: Swatinem/rust-cache@v2

      - uses: matrix-org/setup-python-poetry@v1
        with:
          python-version: ${{ matrix.job.python-version }}
          poetry-version: "1.3.2"
          extras: ${{ matrix.job.extras }}
      - name: Await PostgreSQL
        if: ${{ matrix.job.postgres-version }}
        timeout-minutes: 2
        run: until pg_isready -h localhost; do sleep 1; done
      - run: poetry run trial --jobs=6 tests
        env:
          SYNAPSE_POSTGRES: ${{ matrix.job.database == 'postgres' || '' }}
          SYNAPSE_POSTGRES_HOST: /var/run/postgresql
          SYNAPSE_POSTGRES_USER: postgres
          SYNAPSE_POSTGRES_PASSWORD: postgres
      - name: Dump logs
        # Logs are most useful when the command fails, always include them.
        if: ${{ always() }}
        # Note: Dumps to workflow logs instead of using actions/upload-artifact
        #       This keeps logs colocated with failing jobs
        #       It also ignores find's exit code; this is a best effort affair
        run: >-
          find _trial_temp -name '*.log'
          -exec echo "::group::{}" \;
          -exec cat {} \;
          -exec echo "::endgroup::" \;
          || true

  trial-olddeps:
    # Note: sqlite only; no postgres
    if: ${{ !cancelled() && !failure() && needs.changes.outputs.trial == 'true' }} # Allow previous steps to be skipped, but not fail
    needs:
      - linting-done
      - changes
    runs-on: ubuntu-20.04
    steps:
      - uses: actions/checkout@v4

      - name: Install Rust
        uses: dtolnay/rust-toolchain@1.61.0
      - uses: Swatinem/rust-cache@v2

      # There aren't wheels for some of the older deps, so we need to install
      # their build dependencies
      - run: |
          sudo apt-get -qq update
          sudo apt-get -qq install build-essential libffi-dev python-dev \
            libxml2-dev libxslt-dev xmlsec1 zlib1g-dev libjpeg-dev libwebp-dev

      - uses: actions/setup-python@v5
        with:
          python-version: '3.8'

      - name: Prepare old deps
        if: steps.cache-poetry-old-deps.outputs.cache-hit != 'true'
        run: .ci/scripts/prepare_old_deps.sh

      # Note: we install using `pip` here, not poetry. `poetry install` ignores the
      # build-system section (https://github.com/python-poetry/poetry/issues/6154), but
      # we explicitly want to test that you can `pip install` using the oldest version
      # of poetry-core and setuptools-rust.
      - run: pip install .[all,test]

      # We nuke the local copy, as we've installed synapse into the virtualenv
      # (rather than use an editable install, which we no longer support). If we
      # don't do this then python can't find the native lib.
      - run: rm -rf synapse/

      # Sanity check we can import/run Synapse
      - run: python -m synapse.app.homeserver --help

      - run: python -m twisted.trial -j6 tests
      - name: Dump logs
        # Logs are most useful when the command fails, always include them.
        if: ${{ always() }}
        # Note: Dumps to workflow logs instead of using actions/upload-artifact
        #       This keeps logs colocated with failing jobs
        #       It also ignores find's exit code; this is a best effort affair
        run: >-
          find _trial_temp -name '*.log'
          -exec echo "::group::{}" \;
          -exec cat {} \;
          -exec echo "::endgroup::" \;
          || true

  trial-pypy:
    # Very slow; only run if the branch name includes 'pypy'
    # Note: sqlite only; no postgres. Completely untested since poetry move.
    if: ${{ contains(github.ref, 'pypy') && !failure() && !cancelled() && needs.changes.outputs.trial == 'true' }}
    needs:
      - linting-done
      - changes
    runs-on: ubuntu-latest
    strategy:
      matrix:
        python-version: ["pypy-3.8"]
        extras: ["all"]

    steps:
      - uses: actions/checkout@v4
      # Install libs necessary for PyPy to build binary wheels for dependencies
      - run: sudo apt-get -qq install xmlsec1 libxml2-dev libxslt-dev
      - uses: matrix-org/setup-python-poetry@v1
        with:
          python-version: ${{ matrix.python-version }}
          poetry-version: "1.3.2"
          extras: ${{ matrix.extras }}
      - run: poetry run trial --jobs=2 tests
      - name: Dump logs
        # Logs are most useful when the command fails, always include them.
        if: ${{ always() }}
        # Note: Dumps to workflow logs instead of using actions/upload-artifact
        #       This keeps logs colocated with failing jobs
        #       It also ignores find's exit code; this is a best effort affair
        run: >-
          find _trial_temp -name '*.log'
          -exec echo "::group::{}" \;
          -exec cat {} \;
          -exec echo "::endgroup::" \;
          || true

  sytest:
    if: ${{ !failure() && !cancelled() && needs.changes.outputs.integration == 'true' }}
    needs:
      - calculate-test-jobs
      - changes
    runs-on: ubuntu-latest
    container:
      image: matrixdotorg/sytest-synapse:${{ matrix.job.sytest-tag }}
      volumes:
        - ${{ github.workspace }}:/src
      env:
        SYTEST_BRANCH: ${{ github.head_ref }}
        POSTGRES: ${{ matrix.job.postgres && 1}}
        MULTI_POSTGRES: ${{ (matrix.job.postgres == 'multi-postgres') || '' }}
        ASYNCIO_REACTOR: ${{ (matrix.job.reactor == 'asyncio') || '' }}
        WORKERS: ${{ matrix.job.workers && 1 }}
        BLACKLIST: ${{ matrix.job.workers && 'synapse-blacklist-with-workers' }}
        TOP: ${{ github.workspace }}

    strategy:
      fail-fast: false
      matrix:
        job: ${{ fromJson(needs.calculate-test-jobs.outputs.sytest_test_matrix) }}

    steps:
      - uses: actions/checkout@v4
      - name: Prepare test blacklist
        run: cat sytest-blacklist .ci/worker-blacklist > synapse-blacklist-with-workers

      - name: Install Rust
        uses: dtolnay/rust-toolchain@1.61.0
      - uses: Swatinem/rust-cache@v2

      - name: Run SyTest
        run: /bootstrap.sh synapse
        working-directory: /src
      - name: Summarise results.tap
        if: ${{ always() }}
        run: /sytest/scripts/tap_to_gha.pl /logs/results.tap
      - name: Upload SyTest logs
        uses: actions/upload-artifact@v4
        if: ${{ always() }}
        with:
          name: Sytest Logs - ${{ job.status }} - (${{ join(matrix.job.*, ', ') }})
          path: |
            /logs/results.tap
            /logs/**/*.log*

  export-data:
    if: ${{ !failure() && !cancelled() && needs.changes.outputs.integration == 'true'}} # Allow previous steps to be skipped, but not fail
    needs: [linting-done, portdb, changes]
    runs-on: ubuntu-latest
    env:
      TOP: ${{ github.workspace }}

    services:
      postgres:
        image: postgres
        ports:
          - 5432:5432
        env:
          POSTGRES_PASSWORD: "postgres"
          POSTGRES_INITDB_ARGS: "--lc-collate C --lc-ctype C --encoding UTF8"
        options: >-
          --health-cmd pg_isready
          --health-interval 10s
          --health-timeout 5s
          --health-retries 5

    steps:
      - uses: actions/checkout@v4
      - run: sudo apt-get -qq install xmlsec1 postgresql-client
      - uses: matrix-org/setup-python-poetry@v1
        with:
          poetry-version: "1.3.2"
          extras: "postgres"
      - run: .ci/scripts/test_export_data_command.sh
        env:
          PGHOST: localhost
          PGUSER: postgres
          PGPASSWORD: postgres
          PGDATABASE: postgres


  portdb:
    if: ${{ !failure() && !cancelled() && needs.changes.outputs.integration == 'true'}} # Allow previous steps to be skipped, but not fail
    needs:
      - linting-done
      - changes
    runs-on: ubuntu-latest
    strategy:
      matrix:
        include:
          - python-version: "3.8"
            postgres-version: "11"

          - python-version: "3.11"
            postgres-version: "15"

    services:
      postgres:
        image: postgres:${{ matrix.postgres-version }}
        ports:
          - 5432:5432
        env:
          POSTGRES_PASSWORD: "postgres"
          POSTGRES_INITDB_ARGS: "--lc-collate C --lc-ctype C --encoding UTF8"
        options: >-
          --health-cmd pg_isready
          --health-interval 10s
          --health-timeout 5s
          --health-retries 5

    steps:
      - uses: actions/checkout@v4
      - name: Add PostgreSQL apt repository
        # We need a version of pg_dump that can handle the version of
        # PostgreSQL being tested against. The Ubuntu package repository lags
        # behind new releases, so we have to use the PostreSQL apt repository.
        # Steps taken from https://www.postgresql.org/download/linux/ubuntu/
        run: |
          sudo sh -c 'echo "deb http://apt.postgresql.org/pub/repos/apt $(lsb_release -cs)-pgdg main" > /etc/apt/sources.list.d/pgdg.list'
          wget --quiet -O - https://www.postgresql.org/media/keys/ACCC4CF8.asc | sudo apt-key add -
          sudo apt-get update
      - run: sudo apt-get -qq install xmlsec1 postgresql-client
      - uses: matrix-org/setup-python-poetry@v1
        with:
          python-version: ${{ matrix.python-version }}
          poetry-version: "1.3.2"
          extras: "postgres"
      - run: .ci/scripts/test_synapse_port_db.sh
        id: run_tester_script
        env:
          PGHOST: localhost
          PGUSER: postgres
          PGPASSWORD: postgres
          PGDATABASE: postgres
      - name: "Upload schema differences"
        uses: actions/upload-artifact@v4
        if: ${{ failure() && !cancelled() && steps.run_tester_script.outcome == 'failure' }}
        with:
          name: Schema dumps
          path: |
            unported.sql
            ported.sql
            schema_diff

  complement:
    if: "${{ !failure() && !cancelled() && needs.changes.outputs.integration == 'true' }}"
    needs:
      - linting-done
      - changes
    runs-on: ubuntu-latest

    strategy:
      fail-fast: false
      matrix:
        include:
          - arrangement: monolith
            database: SQLite

          - arrangement: monolith
            database: Postgres

          - arrangement: workers
            database: Postgres

    steps:
      - name: Run actions/checkout@v4 for synapse
        uses: actions/checkout@v4
        with:
          path: synapse

      - name: Install Rust
        uses: dtolnay/rust-toolchain@1.61.0
      - uses: Swatinem/rust-cache@v2

      - name: Prepare Complement's Prerequisites
        run: synapse/.ci/scripts/setup_complement_prerequisites.sh

      - uses: actions/setup-go@v5
        with:
          cache-dependency-path: complement/go.sum
          go-version-file: complement/go.mod

        # use p=1 concurrency as GHA boxes are underpowered and don't like running tons of synapses at once.
      - run: |
          set -o pipefail
          COMPLEMENT_DIR=`pwd`/complement synapse/scripts-dev/complement.sh -p 1 -json 2>&1 | synapse/.ci/scripts/gotestfmt
        shell: bash
        env:
          POSTGRES: ${{ (matrix.database == 'Postgres') && 1 || '' }}
          WORKERS: ${{ (matrix.arrangement == 'workers') && 1 || '' }}
        name: Run Complement Tests

  cargo-test:
    if: ${{ needs.changes.outputs.rust == 'true' }}
    runs-on: ubuntu-latest
    needs:
      - linting-done
      - changes

    steps:
      - uses: actions/checkout@v4

      - name: Install Rust
        uses: dtolnay/rust-toolchain@1.61.0
      - uses: Swatinem/rust-cache@v2

      - run: cargo test

  # We want to ensure that the cargo benchmarks still compile, which requires a
  # nightly compiler.
  cargo-bench:
    if: ${{ needs.changes.outputs.rust == 'true' }}
    runs-on: ubuntu-latest
    needs:
      - linting-done
      - changes

    steps:
      - uses: actions/checkout@v4

      - name: Install Rust
        uses: dtolnay/rust-toolchain@master
        with:
            toolchain: nightly-2022-12-01
      - uses: Swatinem/rust-cache@v2

      - run: cargo bench --no-run

  # a job which marks all the other jobs as complete, thus allowing PRs to be merged.
  tests-done:
    if: ${{ always() }}
    needs:
      - trial
      - trial-olddeps
      - sytest
      - export-data
      - portdb
      - complement
      - cargo-test
      - cargo-bench
      - linting-done
    runs-on: ubuntu-latest
    steps:
      - uses: matrix-org/done-action@v2
        with:
          needs: ${{ toJSON(needs) }}

          # Various bits are skipped if there was no applicable changes.
          # The newsfile lint may be skipped on non PR builds.
          skippable: |
            trial
            trial-olddeps
            sytest
            portdb
            export-data
            complement
            lint-newsfile
            cargo-test
            cargo-bench