name: Tests

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

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

jobs:
  lint:
    runs-on: ubuntu-latest
    strategy:
      matrix:
        toxenv:
          - "check-sampleconfig"
          - "check_codestyle"
          - "check_isort"
          - "mypy"
          - "packaging"

    steps:
      - uses: actions/checkout@v2
      - uses: actions/setup-python@v2
      - run: pip install tox
      - run: tox -e ${{ matrix.toxenv }}

  lint-crlf:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v2
      - name: Check line endings
        run: scripts-dev/check_line_terminators.sh

  lint-newsfile:
    if: ${{ github.base_ref == 'develop'  || contains(github.base_ref, 'release-') }}
    runs-on: ubuntu-latest
    steps:
      # Note: This and the script can be simplified once we drop Buildkite. See:
      #   https://github.com/actions/checkout/issues/266#issuecomment-638346893
      #   https://github.com/actions/checkout/issues/416
      - uses: actions/checkout@v2
        with:
          ref: ${{ github.event.pull_request.head.sha }}
          fetch-depth: 0
      - uses: actions/setup-python@v2
      - run: pip install tox
      - name: Patch Buildkite-specific test script
        run: |
          sed -i -e 's/\$BUILDKITE_PULL_REQUEST/${{ github.event.number }}/' \
            scripts-dev/check-newsfragment
      - run: scripts-dev/check-newsfragment

  lint-sdist:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v2
      - uses: actions/setup-python@v2
        with:
          python-version: "3.x"
      - run: pip install wheel
      - run: python setup.py sdist bdist_wheel
      - uses: actions/upload-artifact@v2
        with:
          name: Python Distributions
          path: dist/*

  # 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-crlf, lint-newsfile, lint-sdist]
    runs-on: ubuntu-latest
    steps:
      - run: "true"

  trial:
    if: ${{ !cancelled() && !failure() }} # Allow previous steps to be skipped, but not fail
    needs: linting-done
    runs-on: ubuntu-latest
    strategy:
      matrix:
        python-version: ["3.6", "3.7", "3.8", "3.9"]
        database: ["sqlite"]
        include:
          # Newest Python without optional deps
          - python-version: "3.9"
            toxenv: "py-noextras,combine"

          # Oldest Python with PostgreSQL
          - python-version: "3.6"
            database: "postgres"
            postgres-version: "9.6"

          # Newest Python with PostgreSQL
          - python-version: "3.9"
            database: "postgres"
            postgres-version: "13"

    steps:
      - uses: actions/checkout@v2
      - run: sudo apt-get -qq install xmlsec1
      - name: Set up PostgreSQL ${{ matrix.postgres-version }}
        if: ${{ matrix.postgres-version }}
        run: |
          docker run -d -p 5432:5432 \
            -e POSTGRES_PASSWORD=postgres \
            -e POSTGRES_INITDB_ARGS="--lc-collate C --lc-ctype C --encoding UTF8" \
            postgres:${{ matrix.postgres-version }}
      - uses: actions/setup-python@v2
        with:
          python-version: ${{ matrix.python-version }}
      - run: pip install tox
      - name: Await PostgreSQL
        if: ${{ matrix.postgres-version }}
        timeout-minutes: 2
        run: until pg_isready -h localhost; do sleep 1; done
      - run: tox -e py,combine
        env:
          TRIAL_FLAGS: "--jobs=2"
          SYNAPSE_POSTGRES: ${{ matrix.database == 'postgres' || '' }}
          SYNAPSE_POSTGRES_HOST: localhost
          SYNAPSE_POSTGRES_USER: postgres
          SYNAPSE_POSTGRES_PASSWORD: postgres
      - name: Dump logs
        # 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:
    if: ${{ !cancelled() && !failure() }} # Allow previous steps to be skipped, but not fail
    needs: linting-done
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v2
      - name: Test with old deps
        uses: docker://ubuntu:bionic # For old python and sqlite
        with:
          workdir: /github/workspace
          entrypoint: .buildkite/scripts/test_old_deps.sh
        env:
          TRIAL_FLAGS: "--jobs=2"
      - name: Dump logs
        # 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'
    if: ${{ contains(github.ref, 'pypy') && !failure() && !cancelled() }}
    needs: linting-done
    runs-on: ubuntu-latest
    strategy:
      matrix:
        python-version: ["pypy-3.6"]

    steps:
      - uses: actions/checkout@v2
      - run: sudo apt-get -qq install xmlsec1 libxml2-dev libxslt-dev
      - uses: actions/setup-python@v2
        with:
          python-version: ${{ matrix.python-version }}
      - run: pip install tox
      - run: tox -e py,combine
        env:
          TRIAL_FLAGS: "--jobs=2"
      - name: Dump logs
        # 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: ${{ !failure() && !cancelled() }}
    needs: linting-done
    runs-on: ubuntu-latest
    container:
      image: matrixdotorg/sytest-synapse:${{ matrix.sytest-tag }}
      volumes:
        - ${{ github.workspace }}:/src
      env:
        BUILDKITE_BRANCH: ${{ github.head_ref }}
        POSTGRES: ${{ matrix.postgres && 1}}
        MULTI_POSTGRES: ${{ (matrix.postgres == 'multi-postgres') && 1}}
        WORKERS: ${{ matrix.workers && 1 }}
        REDIS: ${{ matrix.redis && 1 }}
        BLACKLIST: ${{ matrix.workers && 'synapse-blacklist-with-workers' }}

    strategy:
      fail-fast: false
      matrix:
        include:
          - sytest-tag: bionic

          - sytest-tag: bionic
            postgres: postgres

          - sytest-tag: testing
            postgres: postgres

          - sytest-tag: bionic
            postgres: multi-postgres
            workers: workers

          - sytest-tag: buster
            postgres: multi-postgres
            workers: workers

          - sytest-tag: buster
            postgres: postgres
            workers: workers
            redis: redis

    steps:
      - uses: actions/checkout@v2
      - name: Prepare test blacklist
        run: cat sytest-blacklist .buildkite/worker-blacklist > synapse-blacklist-with-workers
      - 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@v2
        if: ${{ always() }}
        with:
          name: Sytest Logs - ${{ job.status }} - (${{ join(matrix.*, ', ') }})
          path: |
            /logs/results.tap
            /logs/**/*.log*

  portdb:
    if: ${{ !failure() && !cancelled() }} # Allow previous steps to be skipped, but not fail
    needs: linting-done
    runs-on: ubuntu-latest
    strategy:
      matrix:
        include:
          - python-version: "3.6"
            postgres-version: "9.6"

          - python-version: "3.9"
            postgres-version: "13"

    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@v2
      - run: sudo apt-get -qq install xmlsec1
      - uses: actions/setup-python@v2
        with:
          python-version: ${{ matrix.python-version }}
      - name: Patch Buildkite-specific test scripts
        run: |
          sed -i -e 's/host="postgres"/host="localhost"/' .buildkite/scripts/postgres_exec.py
          sed -i -e 's/host: postgres/host: localhost/' .buildkite/postgres-config.yaml
          sed -i -e 's|/src/||' .buildkite/{sqlite,postgres}-config.yaml
          sed -i -e 's/\$TOP/\$GITHUB_WORKSPACE/' .coveragerc
      - run: .buildkite/scripts/test_synapse_port_db.sh

  complement:
    if: ${{ !failure() && !cancelled() }}
    needs: linting-done
    runs-on: ubuntu-latest
    container:
      # https://github.com/matrix-org/complement/blob/master/dockerfiles/ComplementCIBuildkite.Dockerfile
      image: matrixdotorg/complement:latest
      env:
        CI: true
      ports:
        - 8448:8448
      volumes:
        - /var/run/docker.sock:/var/run/docker.sock

    steps:
      - name: Run actions/checkout@v2 for synapse
        uses: actions/checkout@v2
        with:
          path: synapse

      # Attempt to check out the same branch of Complement as the PR. If it
      # doesn't exist, fallback to master.
      - name: Checkout complement
        shell: bash
        run: |
          mkdir -p complement
          # Attempt to use the version of complement which best matches the current
          # build. Depending on whether this is a PR or release, etc. we need to
          # use different fallbacks.
          #
          # 1. First check if there's a similarly named branch (GITHUB_HEAD_REF
          #    for pull requests, otherwise GITHUB_REF).
          # 2. Attempt to use the base branch, e.g. when merging into release-vX.Y
          #    (GITHUB_BASE_REF for pull requests).
          # 3. Use the default complement branch ("master").
          for BRANCH_NAME in "$GITHUB_HEAD_REF" "$GITHUB_BASE_REF" "${GITHUB_REF#refs/heads/}" "master"; do
            # Skip empty branch names and merge commits.
            if [[ -z "$BRANCH_NAME" || $BRANCH_NAME =~ ^refs/pull/.* ]]; then
              continue
            fi

            (wget -O - "https://github.com/matrix-org/complement/archive/$BRANCH_NAME.tar.gz" | tar -xz --strip-components=1 -C complement) && break
          done

      # Build initial Synapse image
      - run: docker build -t matrixdotorg/synapse:latest -f docker/Dockerfile .
        working-directory: synapse

      # Build a ready-to-run Synapse image based on the initial image above.
      # This new image includes a config file, keys for signing and TLS, and
      # other settings to make it suitable for testing under Complement.
      - run: docker build -t complement-synapse -f Synapse.Dockerfile .
        working-directory: complement/dockerfiles

      # Run Complement
      - run: go test -v -tags synapse_blacklist,msc2403,msc2946,msc3083 ./tests/...
        env:
          COMPLEMENT_BASE_IMAGE: complement-synapse:latest
        working-directory: complement

  # a job which marks all the other jobs as complete, thus allowing PRs to be merged.
  tests-done:
    if: ${{ always() }}
    needs:
      - lint
      - lint-crlf
      - lint-newsfile
      - lint-sdist
      - trial
      - trial-olddeps
      - sytest
      - portdb
      - complement
    runs-on: ubuntu-latest
    steps:
      - name: Set build result
        env:
          NEEDS_CONTEXT: ${{ toJSON(needs) }}
        # the `jq` incantation dumps out a series of "<job> <result>" lines.
        # we set it to an intermediate variable to avoid a pipe, which makes it
        # hard to set $rc.
        run: |
          rc=0
          results=$(jq -r 'to_entries[] | [.key,.value.result] | join(" ")' <<< $NEEDS_CONTEXT)
          while read job result ; do
              # The newsfile lint may be skipped on non PR builds
              if [ $result == "skipped" ] && [ $job == "lint-newsfile" ]; then
                continue
              fi

              if [ "$result" != "success" ]; then
                  echo "::set-failed ::Job $job returned $result"
                  rc=1
              fi
          done <<< $results
          exit $rc