name: Integration Tests

on:
  push:
    branches:
      - main
      - release-*.*.*
  pull_request:
    types:
      - opened
      - synchronize
      - reopened

concurrency:
  group: ${{ github.workflow }}-${{ github.ref }}
  cancel-in-progress: ${{ startsWith(github.ref, 'refs/pull/') }}

permissions: {}

jobs:
  detect-changes:
    # Run on `grafana/grafana` main branch, or on pull requests to prevent double-running on mirrors
    if: (github.event_name == 'pull_request' || (github.event_name == 'push' && github.repository == 'grafana/grafana'))
    name: Detect whether code changed
    runs-on: ubuntu-latest
    permissions:
      contents: read
    outputs:
      changed: ${{ steps.detect-changes.outputs.backend }}
    steps:
      - uses: actions/checkout@v4
        with:
          persist-credentials: true # required to get more history in the changed-files action
          fetch-depth: 2
      - name: Detect changes
        id: detect-changes
        uses: ./.github/actions/change-detection
        with:
          self: .github/workflows/pr-test-integration.yml
  sqlite:
    needs: detect-changes
    if: needs.detect-changes.outputs.changed == 'true'
    strategy:
      matrix:
        # We don't need more than this since it has to wait for the other tests.
        shard: [
          1/4, 2/4, 3/4, 4/4,
        ]
      fail-fast: false

    name: Sqlite (${{ matrix.shard }})
    runs-on: ubuntu-x64-large-io
    permissions:
      contents: read
    steps:
      - name: Checkout code
        uses: actions/checkout@v4
        with:
          persist-credentials: false
      - name: Setup Go
        uses: actions/setup-go@v5.5.0
        with:
          go-version-file: go.mod
          cache: true
      - name: Run tests
        env:
          SHARD: ${{ matrix.shard }}
        run: |
          set -euo pipefail
          readarray -t PACKAGES <<< "$(./scripts/ci/backend-tests/pkgs-with-tests-named.sh -b TestIntegration | ./scripts/ci/backend-tests/shard.sh -N"$SHARD" -d-)"
          go test -tags=sqlite -timeout=8m -run '^TestIntegration' "${PACKAGES[@]}"

  sqlite_nocgo:
    needs: detect-changes
    if: needs.detect-changes.outputs.changed == 'true'
    strategy:
      matrix:
        # We don't need more than this since it has to wait for the other tests.
        shard: [
          1/4, 2/4, 3/4, 4/4,
        ]
      fail-fast: false

    name: Sqlite Without CGo (${{ matrix.shard }})
    runs-on: ubuntu-x64-large-io
    permissions:
      contents: read
    steps:
      - name: Checkout code
        uses: actions/checkout@v4
        with:
          persist-credentials: false
      - name: Setup Go
        uses: actions/setup-go@v5.5.0
        with:
          go-version-file: go.mod
          cache: true
      - name: Run tests
        env:
          SHARD: ${{ matrix.shard }}
        run: |
          set -euo pipefail
          readarray -t PACKAGES <<< "$(./scripts/ci/backend-tests/pkgs-with-tests-named.sh -b TestIntegration | ./scripts/ci/backend-tests/shard.sh -N"$SHARD" -d-)"
          CGO_ENABLED=0 go test -tags=sqlite -timeout=8m -run '^TestIntegration' "${PACKAGES[@]}"
  mysql:
    needs: detect-changes
    if: needs.detect-changes.outputs.changed == 'true'
    strategy:
      matrix:
        shard: [
           1/16,  2/16,  3/16,  4/16,
           5/16,  6/16,  7/16,  8/16,
           9/16, 10/16, 11/16, 12/16,
          13/16, 14/16, 15/16, 16/16,
        ]
      fail-fast: false

    name: MySQL (${{ matrix.shard }})
    runs-on: ubuntu-x64-large-io
    permissions:
      contents: read
    env:
      GRAFANA_TEST_DB: mysql
      MYSQL_HOST: 127.0.0.1
    services:
      mysql:
        image: mysql:8.0.43
        env:
          MYSQL_ROOT_PASSWORD: rootpass
          MYSQL_DATABASE: grafana_tests
          MYSQL_USER: grafana
          MYSQL_PASSWORD: password
        options: --health-cmd="mysqladmin ping --silent" --health-interval=10s --health-timeout=5s --health-retries=3
        ports:
          - 3306:3306
    steps:
      - name: Checkout code
        uses: actions/checkout@v4
        with:
          persist-credentials: false
      - name: Setup Go
        uses: actions/setup-go@v5.5.0
        with:
          go-version-file: go.mod
          cache: true
      - name: Setup MySQL devenv
        run: mysql -h 127.0.0.1 -P 3306 -u root -prootpass < devenv/docker/blocks/mysql_tests/setup.sql
      - name: Run tests
        env:
          SHARD: ${{ matrix.shard }}
        run: |
          set -euo pipefail
          readarray -t PACKAGES <<< "$(./scripts/ci/backend-tests/pkgs-with-tests-named.sh -b TestIntegration | ./scripts/ci/backend-tests/shard.sh -N"$SHARD" -d-)"
          CGO_ENABLED=0 go test -p=1 -tags=mysql -timeout=8m -run '^TestIntegration' "${PACKAGES[@]}"
  postgres:
    needs: detect-changes
    if: needs.detect-changes.outputs.changed == 'true'
    strategy:
      matrix:
        shard: [
           1/16,  2/16,  3/16,  4/16,
           5/16,  6/16,  7/16,  8/16,
           9/16, 10/16, 11/16, 12/16,
          13/16, 14/16, 15/16, 16/16,
        ]
      fail-fast: false

    name: Postgres (${{ matrix.shard }})
    runs-on: ubuntu-x64-large-io
    permissions:
      contents: read
    env:
      GRAFANA_TEST_DB: postgres
      PGPASSWORD: grafanatest
      POSTGRES_HOST: 127.0.0.1
    services:
      postgres:
        image: postgres:17.6
        env:
          POSTGRES_USER: grafanatest
          POSTGRES_PASSWORD: grafanatest
          POSTGRES_DB: grafanatest
        ports:
          - 5432:5432
    steps:
      - name: Checkout code
        uses: actions/checkout@v4
        with:
          persist-credentials: false
      - name: Setup Go
        uses: actions/setup-go@v5.5.0
        with:
          go-version-file: go.mod
          cache: true
      - name: Setup Postgres devenv
        run: psql -p 5432 -h 127.0.0.1 -U grafanatest -d grafanatest -f devenv/docker/blocks/postgres_tests/setup.sql
      - name: Run tests
        env:
          SHARD: ${{ matrix.shard }}
        run: |
          set -euo pipefail
          readarray -t PACKAGES <<< "$(./scripts/ci/backend-tests/pkgs-with-tests-named.sh -b TestIntegration | ./scripts/ci/backend-tests/shard.sh -N"$SHARD" -d-)"
          CGO_ENABLED=0 go test -p=1 -tags=postgres -timeout=8m -run '^TestIntegration' "${PACKAGES[@]}"

  # This is the job that is actually required by rulesets.
  # We want to only require one job instead of all the individual tests and shards.
  # Future work also allows us to start skipping some tests based on changed files.
  required-backend-integration-tests:
    needs:
      - mysql
      - postgres
      - sqlite
    # always() is the best function here.
    # success() || failure() will skip this function if any need is also skipped.
    # That means conditional test suites will fail the entire requirement check.
    if: always()

    name: All backend integration tests complete
    runs-on: ubuntu-latest
    steps:
      - name: Check test suites
        env:
          NEEDS: ${{ toJson(needs) }}
        run: |
          FAILURES="$(echo "$NEEDS" | jq 'with_entries(select(.value.result == "failure")) | map_values(.result)')"
          echo "$FAILURES"
          if [ "$(echo "$FAILURES" | jq '. | length')" != "0" ]; then
            exit 1
          fi
          echo "All OK!"