# Docker Compose for testing remote transcoding workers
#
# Prerequisites:
# 1. Worker API running on host: ./start-worker-api.sh (or uvicorn api.worker_api:app --port 9002)
# 2. Register a worker: curl -X POST http://localhost:9002/api/worker/register
# 3. Set the VLOG_WORKER_API_KEY environment variable with the returned key
#
# Usage:
#   export VLOG_WORKER_API_KEY=<your-api-key>
#   docker compose -f docker-compose.worker.yaml up --build
#
#   # Scale workers:
#   docker compose -f docker-compose.worker.yaml up --build --scale vlog-worker=3

services:
  vlog-worker:
    build:
      context: .
      dockerfile: Dockerfile.worker
    environment:
      # API URL - use host.docker.internal for macOS/Windows, or host IP for Linux
      - VLOG_WORKER_API_URL=${VLOG_WORKER_API_URL:-http://host.docker.internal:9002}
      # API key from worker registration (required)
      - VLOG_WORKER_API_KEY=${VLOG_WORKER_API_KEY}
      # Worker settings
      - VLOG_WORKER_HEARTBEAT_INTERVAL=${VLOG_WORKER_HEARTBEAT_INTERVAL:-30}
      - VLOG_WORKER_POLL_INTERVAL=${VLOG_WORKER_POLL_INTERVAL:-10}
    # For Linux hosts, use host networking to access localhost services
    # Uncomment the next line and comment out the extra_hosts section if needed
    # network_mode: host
    extra_hosts:
      # Enable host.docker.internal on Linux
      - "host.docker.internal:host-gateway"
    volumes:
      # Mount work directory for debugging (optional)
      - worker-data:/tmp/vlog-worker
    deploy:
      # Resource limits for transcoding
      resources:
        limits:
          cpus: '4'
          memory: 8G
        reservations:
          cpus: '1'
          memory: 2G
    restart: unless-stopped
    healthcheck:
      # Check the worker's /ready endpoint which validates FFmpeg and API connectivity
      test: ["CMD", "curl", "-f", "http://localhost:8080/ready"]
      interval: 30s
      timeout: 10s
      retries: 3
      # Allow time for worker to start and establish API connection
      start_period: 30s

volumes:
  worker-data: