services:
  opentelemetry-collector:
    image: otel/opentelemetry-collector-contrib:0.136.0
    command: ["--config=/etc/opentelemetry-collector.yaml"]
    volumes:
      - ./configuration/opentelemetry-collector.yaml:/etc/opentelemetry-collector.yaml
    ports:
      # NOTE: when `speaches` is also running as a Docker Compose service, this doesn't need to be exposed.
      - 4317:4317 # OTLP gRPC receiver
      # - 4318:4318 # OTLP HTTP receiver
      # - 8888:8888 # Prometheus metrics exposed by the Collector
      # - 8889:8889 # Prometheus exporter metrics
      # - 13133:13133 # health_check extension
    # NOTE: `healthcheck` can't be set up, as the container doesn't have a shell to run the healthcheck command.
  loki:
    image: grafana/loki:3.5.5
    command: ["-config.file=/etc/loki.yaml"]
    volumes:
      - ./configuration/loki.yaml:/etc/loki.yaml
      - loki-data:/loki
    ports:
      - "3100:3100"
    healthcheck:
      # NOTE: doesn't have a proper healthcheck endpoint
      test: wget --no-verbose --tries=1 --spider http://localhost:3100/ready || exit 1
      interval: 5s
      timeout: 5s
      retries: 3
  prometheus:
    image: prom/prometheus:v2.55.1
    command: ["--config.file=/etc/prometheus.yaml"]
    volumes:
      - ./configuration/prometheus.yaml:/etc/prometheus.yaml
      - prometheus-data:/prometheus
    healthcheck:
      test: wget --no-verbose --tries=1 --spider http://localhost:9090/-/healthy || exit 1
      interval: 5s
      timeout: 5s
      retries: 3
  tempo:
    image: grafana/tempo:2.8.2
    command: ["-config.file=/etc/tempo.yaml"]
    volumes:
      - ./configuration/tempo.yaml:/etc/tempo.yaml
      - tempo-data:/tmp
      # https://github.com/grafana/tempo/issues/1657#issuecomment-2049987178
      # - tempo-data:/tmp/tempo
    healthcheck:
      test: wget --no-verbose --tries=1 --spider http://localhost:3200/status || exit 1
      interval: 5s
      timeout: 5s
      retries: 3
  grafana:
    image: grafana/grafana:12.2.0
    volumes:
      - ./configuration/grafana/datasources.yaml:/etc/grafana/provisioning/datasources/datasources.yaml
      - grafana-data:/var/lib/grafana
    environment:
      - GF_AUTH_ANONYMOUS_ENABLED=true
      - GF_AUTH_ANONYMOUS_ORG_ROLE=Admin
      - GF_AUTH_DISABLE_LOGIN_FORM=true
    ports:
      - "3000:3000"
    healthcheck:
      test: wget --no-verbose --tries=1 --spider http://localhost:3000/api/health || exit 1
      interval: 5s
      timeout: 5s
      retries: 3
volumes:
  loki-data:
  prometheus-data:
  tempo-data:
  grafana-data: