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# ════════════════════════════════════════════════════════════
# MicProtocol - Monitoring Stack (OTel, Loki, Prometheus, Grafana)
# Runs with --network host so all services are reachable at localhost
# ════════════════════════════════════════════════════════════

version: "3.8"

services:
  # ─── Prometheus (Metrics) ──────────────────────────────────
  prometheus:
    image: prom/prometheus:latest
    container_name: micprotocol-prometheus
    restart: unless-stopped
    network_mode: host
    ports:
      - "9090:9090"
    volumes:
      - ./prometheus/prometheus.yml:/etc/prometheus/prometheus.yml:ro
      - prometheus_data:/prometheus
    command:
      - --config.file=/etc/prometheus/prometheus.yml
      - --storage.tsdb.path=/prometheus
      - --web.console.libraries=/etc/prometheus/console_libraries
      - --web.console.templates=/etc/prometheus/consoles
      - --web.enable-lifecycle
      - --web.listen-address=0.0.0.0:9090

  # ─── Loki (Logs) ───────────────────────────────────────────
  loki:
    image: grafana/loki:latest
    container_name: micprotocol-loki
    restart: unless-stopped
    network_mode: host
    ports:
      - "3100:3100"
    volumes:
      - ./loki/loki-config.yaml:/etc/loki/local-config.yaml:ro
    command: -config.file=/etc/loki/local-config.yaml

  # ─── OpenTelemetry Collector (Traces + Metrics + Logs) ─────
  otel-collector:
    image: otel/opentelemetry-collector-contrib:latest
    container_name: micprotocol-otel-collector
    restart: unless-stopped
    network_mode: host
    ports:
      - "4317:4317"   # OTLP gRPC
      - "4318:4318"   # OTLP HTTP
      - "8888:8888"   # metrics endpoint
    volumes:
      - ./otel-collector/config.yaml:/etc/otel-collector/config.yaml:ro
    command: ["--config=/etc/otel-collector/config.yaml"]
    depends_on:
      - prometheus
      - loki

  # ─── Grafana (Visualization) ───────────────────────────────
  grafana:
    image: grafana/grafana:latest
    container_name: micprotocol-grafana
    restart: unless-stopped
    network_mode: host
    ports:
      - "3005:3000"
    environment:
      - GF_SECURITY_ADMIN_USER=${GRAFANA_ADMIN_USER:-admin}
      - GF_SECURITY_ADMIN_PASSWORD=${GRAFANA_ADMIN_PASSWORD:-admin}
      - GF_USERS_DEFAULT_THEME=dark
      - GF_SERVER__HTTP_PORT=3005
    volumes:
      - ./grafana/datasources.yml:/etc/grafana/provisioning/datasources/datasources.yml:ro
      - ./grafana/dashboards:/etc/grafana/provisioning/dashboards:ro
      - grafana_data:/var/lib/grafana
    depends_on:
      - prometheus
      - loki

# ─── Volumes ─────────────────────────────────────────────────
volumes:
  prometheus_data:
    driver: local
  grafana_data:
    driver: local