docker-compose.yml

services:
  postgres:
    image: postgres:16
    container_name: webhook_postgres
    environment:
      POSTGRES_USER: webhook
      POSTGRES_PASSWORD: webhook
      POSTGRES_DB: webhookdb
    ports:
      - "5432:5432"
    volumes:
      - postgres_data:/var/lib/postgresql/data
    healthcheck:
      test: ["CMD-SHELL", "pg_isready -U webhook -d webhookdb"]
      interval: 5s
      timeout: 5s
      retries: 5

  redis:
    image: redis:7
    container_name: webhook_redis
    ports:
      - "6379:6379"
    healthcheck:
      test: ["CMD", "redis-cli", "ping"]
      interval: 5s
      timeout: 5s
      retries: 5

  # ---------------------------------------------------------------------------
  # Phase 3: Celery worker
  #
  # Runs the background delivery worker.  The worker:
  #   - Subscribes to the Redis task queue
  #   - Executes deliver_webhook_task for each event
  #   - Writes DeliveryAttempt rows and updates Event.status in Postgres
  #
  # To run the worker LOCALLY (outside Docker) on Windows:
  #   celery -A app.core.celery_app worker --loglevel=info -P solo
  #
  # The -P solo flag is required on Windows because the default prefork pool
  # uses os.fork(), which is unavailable on that platform.
  # ---------------------------------------------------------------------------
  celery_worker:
    build:
      context: .
      dockerfile: Dockerfile
    container_name: webhook_celery_worker
    command: celery -A app.core.celery_app worker --loglevel=info --concurrency=2
    environment:
      - DATABASE_URL=postgresql+psycopg2://webhook:webhook@postgres:5432/webhookdb
      - REDIS_URL=redis://redis:6379/0
    depends_on:
      postgres:
        condition: service_healthy
      redis:
        condition: service_healthy
    profiles:
      # Only start the celery_worker when explicitly requested:
      #   docker compose --profile celery up
      # This keeps the default `docker compose up` lightweight (just Postgres + Redis).
      - celery

volumes:
  postgres_data: