docker-compose.yml

name: slimybug

services:
  postgres:
    image: postgres:16
    environment:
      POSTGRES_USER: slimybug
      POSTGRES_PASSWORD: slimybug
      POSTGRES_DB: slimybug
    volumes:
      - ./services/postgres/init.sql:/docker-entrypoint-initdb.d/init.sql:ro
    healthcheck:
      test: ["CMD-SHELL", "pg_isready -U slimybug -d slimybug"]
      interval: 2s
      timeout: 3s
      retries: 20

  toxiproxy:
    image: ghcr.io/shopify/toxiproxy:2.9.0
    ports:
      - "8474:8474" # Toxiproxy control API
    depends_on:
      postgres:
        condition: service_healthy
    # The toxiproxy image is a bare Go binary with no shell/wget/curl, so it
    # can't run a self-check command; toxiproxy-init polls it externally instead.

  toxiproxy-init:
    image: curlimages/curl:8.9.1
    depends_on:
      toxiproxy:
        condition: service_started
    restart: "no"
    entrypoint: >
      sh -c "
      until curl -s -o /dev/null http://toxiproxy:8474/version; do sleep 1; done;
      curl -s -X POST http://toxiproxy:8474/proxies
      -H 'Content-Type: application/json'
      -d '{\"name\":\"postgres\",\"listen\":\"0.0.0.0:5433\",\"upstream\":\"postgres:5432\"}'
      || true"

  service-a:
    build: ./services/service-a
    environment:
      SERVICE_B_URL: http://service-b:8000/work
      HTTP_TIMEOUT: "2.0"
      RETRY_POLICY: "${RETRY_POLICY:-none}"
      RETRY_BACKOFF_MIN_MS: "50"
      RETRY_BACKOFF_MAX_MS: "100"
      BREAKER_ENABLED: "${BREAKER_ENABLED:-false}"
      BREAKER_WINDOW_SIZE: "${BREAKER_WINDOW_SIZE:-20}"
    ports:
      - "8000:8000"
    depends_on:
      service-b:
        condition: service_healthy
    healthcheck:
      test: ["CMD", "python", "-c", "import urllib.request; urllib.request.urlopen('http://127.0.0.1:8000/healthz')"]
      interval: 2s
      timeout: 3s
      retries: 20

  service-b:
    build: ./services/service-b
    environment:
      DB_HOST: toxiproxy
      DB_PORT: "5433"
      DB_USER: slimybug
      DB_PASSWORD: slimybug
      DB_NAME: slimybug
      POOL_MIN_SIZE: "5"
      POOL_MAX_SIZE: "${POOL_MAX_SIZE:-10}"
      POOL_ACQUIRE_TIMEOUT: "2.0"
      QUERY_TIMEOUT: "2.0"
      ENABLE_ARRIVAL_TRACE: "${ENABLE_ARRIVAL_TRACE:-false}"
      ADMISSION_CONTROL_ENABLED: "${ADMISSION_CONTROL_ENABLED:-false}"
      ADMISSION_CONTROL_MODE: "${ADMISSION_CONTROL_MODE:-instantaneous}"
      ADMISSION_EWMA_HALF_LIFE_S: "${ADMISSION_EWMA_HALF_LIFE_S:-2.0}"
      ADMISSION_U_LOW: "${ADMISSION_U_LOW:-0.8}"
      ADMISSION_GRACE_MS: "${ADMISSION_GRACE_MS:-20.0}"
      ENABLE_ADMISSION_DECISION_TRACE: "${ENABLE_ADMISSION_DECISION_TRACE:-false}"
    ports:
      - "8001:8000"
    depends_on:
      toxiproxy-init:
        condition: service_completed_successfully
    healthcheck:
      test: ["CMD", "python", "-c", "import urllib.request; urllib.request.urlopen('http://127.0.0.1:8000/healthz')"]
      interval: 2s
      timeout: 3s
      retries: 20

  loadgen:
    build: ./services/loadgen
    profiles: ["loadgen"]
    depends_on:
      service-a:
        condition: service_healthy