# Redis SDK topology evidence.
#
# The lanes in infra/redis-sdk answer what the deterministic in-memory gateway cannot — Sentinel
# promotion behaviour, Cluster redirects, ACL coverage. docs/redis/support-matrix.md records which
# lane produced which evidence, and RedisSupportMatrixTest refuses an evidence claim that does not
# name the test class behind it.
#
# Three cadences, because the cost and the question differ:
#
#   pull_request  standalone only, current supported version. The cheapest lane that can still
#                 catch "this change cannot talk to a real Redis at all". A PR gate that starts
#                 three topologies is a PR gate people learn to ignore.
#   schedule      the full supported-version x topology matrix, nightly. This is where Sentinel
#                 promotion and Cluster redirect evidence comes from.
#   workflow_dispatch  one lane on demand, for reproducing a specific failure.
#
# A release candidate uses the nightly matrix run for its tag: `release-candidate` selects the full
# matrix on demand so an RC does not have to wait for the next scheduled run.
#
# Each lane has its own endpoint. A sentinel is not a data node and a cluster node is not the whole
# cluster, so the address, port, and (for Sentinel) the monitored primary's name are per-lane rather
# than one hardcoded 6379 that happens to be right for standalone only.
#
# The Gradle task is fail-closed on its own account: an unknown mode, a missing endpoint, a lane
# with no tagged test class, and a run that executed zero tests are all errors. This workflow does
# not need to re-check those, but it does have to keep the evidence, which is why every run uploads
# the JUnit XML together with the commit SHA, the server version and the resolved image digest. An
# evidence artifact that cannot say which image produced it is not evidence.
name: redis-sdk-topology

on:
  pull_request:
    paths:
      - "src/adapter/outbound/cache-redis/**"
      - "infra/redis-sdk/**"
      - ".github/workflows/redis-sdk-topology.yml"
  schedule:
    # 02:30 UTC daily. Nightly, not hourly: the matrix starts real servers.
    - cron: "30 2 * * *"
  workflow_dispatch:
    inputs:
      topology:
        description: standalone, sentinel, cluster, tls, or release-candidate for the full matrix
        required: true
        default: standalone
        type: choice
        options: [standalone, sentinel, cluster, tls, release-candidate]
      redis_version:
        description: server version tag
        required: true
        default: "7.4"
        type: string

permissions:
  contents: read

jobs:
  # The matrix is computed rather than duplicated per trigger, so adding a supported version is one
  # edit and no trigger can silently keep testing an old set.
  lanes:
    runs-on: ubuntu-latest
    outputs:
      matrix: ${{ steps.select.outputs.matrix }}
    steps:
      - id: select
        run: |
          set -euo pipefail
          case "${{ github.event_name }}" in
            pull_request)
              matrix='{"include":[{"topology":"standalone","redis_version":"7.4"}]}'
              ;;
            schedule)
              matrix='{"include":[
                {"topology":"standalone","redis_version":"7.2"},
                {"topology":"standalone","redis_version":"7.4"},
                {"topology":"standalone","redis_version":"8.2"},
                {"topology":"sentinel","redis_version":"7.2"},
                {"topology":"sentinel","redis_version":"7.4"},
                {"topology":"sentinel","redis_version":"8.2"},
                {"topology":"cluster","redis_version":"7.2"},
                {"topology":"cluster","redis_version":"7.4"},
                {"topology":"cluster","redis_version":"8.2"},
                {"topology":"tls","redis_version":"7.4"},
                {"topology":"tls","redis_version":"8.2"}]}'
              ;;
            *)
              if [ "${{ inputs.topology }}" = "release-candidate" ]; then
                matrix='{"include":[
                  {"topology":"standalone","redis_version":"7.2"},
                  {"topology":"standalone","redis_version":"7.4"},
                  {"topology":"standalone","redis_version":"8.2"},
                  {"topology":"sentinel","redis_version":"7.2"},
                  {"topology":"sentinel","redis_version":"7.4"},
                  {"topology":"sentinel","redis_version":"8.2"},
                  {"topology":"cluster","redis_version":"7.2"},
                  {"topology":"cluster","redis_version":"7.4"},
                  {"topology":"cluster","redis_version":"8.2"},
                  {"topology":"tls","redis_version":"7.4"},
                  {"topology":"tls","redis_version":"8.2"}]}'
              else
                matrix='{"include":[{"topology":"${{ inputs.topology }}","redis_version":"${{ inputs.redis_version }}"}]}'
              fi
              ;;
          esac
          printf 'matrix=%s\n' "$(printf '%s' "$matrix" | tr -d '\n ')" >> "$GITHUB_OUTPUT"

  topology-evidence:
    needs: lanes
    runs-on: ubuntu-latest
    timeout-minutes: 30
    strategy:
      fail-fast: false
      matrix: ${{ fromJson(needs.lanes.outputs.matrix) }}
    steps:
      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # actions/checkout@v4.2.2
      - name: Validate Gradle wrapper
        id: gradle-wrapper-validation
        uses: gradle/actions/wrapper-validation@3f131e8634966bd73d06cc69884922b02e6faf92 # gradle/actions@v6
      - uses: actions/setup-java@c5195efecf7bdfc987ee8bae7a71cb8b11521c00 # actions/setup-java@v4.7.1
        with:
          distribution: temurin
          java-version: "21.0.11+10"
          cache: gradle
          cache-dependency-path: |
            src/**/*.gradle
            src/**/gradle-wrapper.properties
            src/**/gradle.lockfile
      - name: Start the topology
        env:
          REDIS_VERSION: ${{ matrix.redis_version }}
        run: docker compose -f "infra/redis-sdk/${{ matrix.topology }}/compose.yml" up -d --wait
      - name: Record the image digest
        id: image
        run: |
          set -euo pipefail
          # The tag says 7.4; the digest says which 7.4. Evidence that names only the tag cannot be
          # reproduced once the tag moves.
          digest="$(docker image inspect --format '{{index .RepoDigests 0}}' \
            "redis:${{ matrix.redis_version }}" 2>/dev/null || echo 'unresolved')"
          printf 'digest=%s\n' "$digest" >> "$GITHUB_OUTPUT"
      - name: Run the topology contracts
        working-directory: src
        run: |
          set -euo pipefail
          case '${{ matrix.topology }}' in
            standalone) port=6379; extra='' ;;
            sentinel)   port=27010; extra='-Predis.topology.master=skeleton' ;;
            cluster)    port=7100; extra='' ;;
            # The TLS lane's CA is generated at start-up, so the trust material is extracted from
            # the lane rather than checked in. A checked-in key is a secret in the repository
            # however loudly the file is named "test".
            tls)
              port=6390
              docker compose -f ../infra/redis-sdk/tls/compose.yml cp redis:/tls/ca.crt "$RUNNER_TEMP/redis-lane-ca.pem"
              extra="-Predis.topology.trust-material=$RUNNER_TEMP/redis-lane-ca.pem"
              ;;
            *) echo "unknown topology"; exit 1 ;;
          esac
          ./gradlew :adapter:outbound:cache-redis:redisTopologyTest --console=plain \
            -Predis.topology.host=localhost \
            -Predis.topology.port="$port" \
            -Predis.topology.mode='${{ matrix.topology }}' \
            $extra
      - name: Write the evidence manifest
        if: always()
        run: |
          set -euo pipefail
          out=src/adapter/outbound/cache-redis/build/test-results/redisTopologyTest
          mkdir -p "$out"
          cat > "$out/evidence-manifest.txt" <<MANIFEST
          commit=${{ github.sha }}
          workflow_run=${{ github.run_id }}
          trigger=${{ github.event_name }}
          topology=${{ matrix.topology }}
          redis_version=${{ matrix.redis_version }}
          image_digest=${{ steps.image.outputs.digest }}
          MANIFEST
      - name: Preserve the evidence
        if: always()
        uses: actions/upload-artifact@ea165f8d65b6e75b540449e92b4886f43607fa02 # actions/upload-artifact@v4.6.2
        with:
          name: redis-topology-${{ matrix.topology }}-${{ matrix.redis_version }}
          path: |
            src/adapter/outbound/cache-redis/build/test-results/redisTopologyTest/**
            src/adapter/outbound/cache-redis/build/reports/tests/redisTopologyTest/**
          if-no-files-found: error
          retention-days: 90
      - name: Stop the topology
        if: always()
        run: docker compose -f "infra/redis-sdk/${{ matrix.topology }}/compose.yml" down -v