# Ephemeral stack for the performance suite.
#
# A near-copy of compose.e2e.yaml -- same throwaway database, same readiness
# healthcheck -- with three deliberate differences, all of them load-bearing:
#
#   1. The db port is PUBLISHED. perf/seed.ts runs on the host and writes
#      directly to postgres; the e2e stack keeps it unpublished because nothing
#      outside the compose network ever needs it.
#   2. PERF_INSTRUMENTATION is on, which makes /api/trpc report how many Prisma
#      operations each request ran. It is inert everywhere else.
#   3. The app defaults to host port 3100, so a perf run does not collide with a
#      dev server or an e2e stack on 3000. Only /api/trpc is exercised -- never a
#      server action -- so next.config.mjs pinning serverActions.allowedOrigins
#      to localhost:3000 does not apply.
#
# Always invoke through scripts/perf.sh, which adds the flags that guarantee a
# clean database.
name: spliit-perf

services:
  app:
    build:
      context: .
    image: spliit-perf:latest
    ports:
      - '${PERF_HOST_PORT:-3100}:3000'
    environment:
      POSTGRES_PRISMA_URL: postgresql://postgres:perf@db:5432/spliit_perf
      POSTGRES_URL_NON_POOLING: postgresql://postgres:perf@db:5432/spliit_perf
      NEXT_TELEMETRY_DISABLED: '1'
      # Turns on the query counter in src/lib/perf-instrumentation.ts. Nothing
      # else in the repository sets this. Read at runtime, not baked into the
      # image, so the Dockerfile needs no build argument for it.
      PERF_INSTRUMENTATION: '1'
    restart: 'no'
    depends_on:
      db:
        condition: service_healthy
    healthcheck:
      # 127.0.0.1 rather than localhost: busybox may resolve localhost to ::1.
      # /api/health/readiness runs `SELECT 1`, and scripts/container-entrypoint.sh
      # runs `prisma migrate deploy` *before* starting the server -- so any 200 here
      # proves the schema is migrated and the app is serving.
      test:
        [
          'CMD-SHELL',
          'wget -q -O /dev/null http://127.0.0.1:3000/api/health/readiness || exit 1',
        ]
      interval: 3s
      timeout: 5s
      retries: 40
      start_period: 20s

  db:
    image: postgres:17-alpine
    environment:
      POSTGRES_USER: postgres
      POSTGRES_PASSWORD: perf
      POSTGRES_DB: spliit_perf
    ports:
      # Published so the host-side seeder can reach it. Defaults well away from
      # 5432 to avoid colliding with a local postgres.
      - '${PERF_DB_PORT:-55432}:5432'
    # As in compose.e2e.yaml: the postgres image declares its own VOLUME, so
    # freshness comes from `up --renew-anon-volumes` and `down --volumes` in
    # scripts/perf.sh, not from the absence of a volume here.
    #
    # fsync is off because this database is thrown away every run. It makes the
    # suite fast, and it is also why the timings are only good for comparing
    # runs against each other -- never for estimating production capacity.
    command:
      - postgres
      - -c
      - fsync=off
      - -c
      - synchronous_commit=off
      - -c
      - full_page_writes=off
    restart: 'no'
    healthcheck:
      test: ['CMD-SHELL', 'pg_isready -U postgres -d spliit_perf']
      interval: 2s
      timeout: 5s
      retries: 30