docker-compose-ha.yml

# YAML anchor for shared proxy service configuration
x-proxy-service: &proxy-service
  build:
    context: .
    dockerfile: Dockerfile
    network: host
  environment:
    # Proxy configuration - container always listens on 8080 internally
    PROXY_ARGS: "--port 8080 "
    # Admin dashboard configuration
    ADMIN_PASSWORD: ${ADMIN_PASSWORD}
    # Server secret for API operations (must be hex string with even length)
    SERVER_SECRET: ${SERVER_SECRET}
    # Logging configuration (used by logback.xml)
    LOG_LEVEL: ${LOG_LEVEL:-INFO}
    # Database configuration
    DB_URL: jdbc:postgresql://postgres:5432/aggregator
    DB_USER: aggregator
    DB_PASSWORD: ${DB_PASSWORD}
    # HikariCP connection pool configuration
    HIKARI_MAX_POOL_SIZE: ${HIKARI_MAX_POOL_SIZE:-50}
    HIKARI_MIN_IDLE: ${HIKARI_MIN_IDLE:-10}
    HIKARI_CONNECTION_TIMEOUT: ${HIKARI_CONNECTION_TIMEOUT:-30000}
    HIKARI_IDLE_TIMEOUT: ${HIKARI_IDLE_TIMEOUT:-600000}
    HIKARI_MAX_LIFETIME: ${HIKARI_MAX_LIFETIME:-1800000}
    HIKARI_VALIDATION_TIMEOUT: ${HIKARI_VALIDATION_TIMEOUT:-5000}
    HIKARI_LEAK_DETECTION_THRESHOLD: ${HIKARI_LEAK_DETECTION_THRESHOLD:-60000}
    # Log configuration
    LOG_DIR: /var/log/aggregator
    # Shard configuration - optional URI to load shard config from (file:// or http://)
    # If set, overrides database config on startup. Maps to /etc/aggregator/config inside container.
    SHARD_CONFIG_URI: ${SHARD_CONFIG_URI:-}
  depends_on:
    postgres:
      condition: service_healthy
  healthcheck:
    test: ["CMD-SHELL", "wget --no-verbose --tries=1 --spider http://localhost:8080/health || exit 1"]
    interval: 10s
    timeout: 5s
    retries: 5
    start_period: 30s
  networks:
    - aggregator-network
  extra_hosts:
    # Allow proxy to connect to host machine (for local aggregator)
    - "host.docker.internal:host-gateway"
  restart: unless-stopped

services:
  postgres:
    image: postgres:15-alpine
    container_name: aggregator-postgres
    environment:
      POSTGRES_DB: aggregator
      POSTGRES_USER: aggregator
      POSTGRES_PASSWORD: ${DB_PASSWORD}
#    ports:
#      - "${POSTGRES_PORT:-5432}:5432"
    volumes:
      - postgres-data:/var/lib/postgresql/data
    healthcheck:
      test: ["CMD-SHELL", "pg_isready -U aggregator"]
      interval: 10s
      timeout: 5s
      retries: 5
    networks:
      - aggregator-network

  # HAProxy load balancer - distributes traffic across 3 proxy nodes
  haproxy:
    image: haproxy:2.8-alpine
    container_name: aggregator-haproxy
    environment:
      HAPROXY_STATS_PASSWORD: ${HAPROXY_STATS_PASSWORD}
    ports:
      # Main proxy port
      - "${PROXY_PORT:-8080}:8080"
      # Stats/monitoring page
      - "${HAPROXY_STATS_PORT:-8404}:8404"
    volumes:
      - ./haproxy.cfg:/usr/local/etc/haproxy/haproxy.cfg:ro
    depends_on:
      proxy-1:
        condition: service_healthy
      proxy-2:
        condition: service_healthy
      proxy-3:
        condition: service_healthy
    networks:
      - aggregator-network
    restart: unless-stopped

  # Proxy node 1
  proxy-1:
    <<: *proxy-service
    container_name: aggregator-proxy-1
    volumes:
      - ${SHARD_CONFIG_DIR:-./config}:/etc/aggregator/config:ro
      - proxy-1-logs:/var/log/aggregator

  # Proxy node 2
  proxy-2:
    <<: *proxy-service
    container_name: aggregator-proxy-2
    volumes:
      - ${SHARD_CONFIG_DIR:-./config}:/etc/aggregator/config:ro
      - proxy-2-logs:/var/log/aggregator

  # Proxy node 3
  proxy-3:
    <<: *proxy-service
    container_name: aggregator-proxy-3
    volumes:
      - ${SHARD_CONFIG_DIR:-./config}:/etc/aggregator/config:ro
      - proxy-3-logs:/var/log/aggregator

volumes:
  postgres-data:
  proxy-1-logs:
  proxy-2-logs:
  proxy-3-logs:

networks:
  aggregator-network:
    driver: bridge