# Minimal compose for the TCP proxy with optional BPF sockmap zero-copy
# relay. Uses host networking so sockmap can attach to real kernel
# sockets and SO_REUSEPORT shards across workers on the host's real
# NIC / loopback stack.
#
# Usage:
#
#   # Fixed backend, userspace relay:
#   TCP_BACKEND_ENDPOINT=10.0.0.2:5432 \
#     docker compose -f docker-compose.tcp.yml up --build
#
#   # With sockmap zero-copy:
#   TCP_SOCKMAP_ENABLED=1 \
#   TCP_BACKEND_ENDPOINT=10.0.0.2:5432 \
#     docker compose -f docker-compose.tcp.yml up --build
#
#   # Custom resolver:
#   docker compose -f docker-compose.tcp.yml \
#     run -v ./resolver.php:/etc/utopia-proxy/resolver.php:ro tcp-proxy

services:

  tcp-proxy:
    build:
      context: .
      dockerfile: Dockerfile
    container_name: utopia-tcp-proxy
    network_mode: host
    cap_add:
      - BPF
      - NET_ADMIN
      - SYS_RESOURCE
      - IPC_LOCK
    ulimits:
      nofile:
        soft: 1048576
        hard: 1048576
      memlock: -1
    environment:
      TCP_BACKEND_ENDPOINT: "${TCP_BACKEND_ENDPOINT:-127.0.0.1:15432}"
      TCP_POSTGRES_PORT: "${TCP_POSTGRES_PORT:-25432}"
      TCP_MYSQL_PORT: "${TCP_MYSQL_PORT:-0}"
      TCP_WORKERS: "${TCP_WORKERS:-8}"
      TCP_REACTOR_NUM: "${TCP_REACTOR_NUM:-8}"
      TCP_SKIP_VALIDATION: "${TCP_SKIP_VALIDATION:-1}"
      TCP_SOCKMAP_ENABLED: "${TCP_SOCKMAP_ENABLED:-0}"
      TCP_SOCKMAP_BPF_OBJECT: "/opt/proxy/relay.bpf.o"
    restart: unless-stopped