docker-compose.yaml

version: '3'
services:
  app:
    build: ./
    environment:
      OTEL_SERVICE_NAME: 'logs-in-context'
      # Logs are forwarded to collector using fluentd
      OTEL_LOGS_EXPORTER: none
      OTEL_EXPORTER_OTLP_ENDPOINT: 'http://collector:4317'
      OTEL_EXPERIMENTAL_RESOURCE_DISABLED_KEYS: 'process.command_line,process.command_args'
      OTEL_EXPORTER_OTLP_METRICS_TEMPORALITY_PREFERENCE: 'delta'
      OTEL_ATTRIBUTE_VALUE_LENGTH_LIMIT: 4095
    ports:
      - '8080:8080'
    logging:
      driver: fluentd
      options:
        fluentd-address: localhost:8006
    depends_on:
      - collector

  collector:
    image: otel/opentelemetry-collector-contrib:0.92.0
    volumes:
      - ./otel-config.yaml:/otel-config.yaml
    command: ["--config=/otel-config.yaml"]
    environment:
      LOG_EXPORTER_LOG_VERBOSITY: "detailed"
      NEW_RELIC_OTLP_ENDPOINT: ${NEW_RELIC_OTLP_ENDPOINT}
      NEW_RELIC_API_KEY: '${NEW_RELIC_API_KEY}'
    ports:
      - '4317:4317' # OTLP gRPC receiver
      - '4318:4318' # OTLP HTTP receiver
      - '13133:13133' # health_check
      - '8006:8006' # Fluentd forward receiver
      - '8006:8006/udp' # Fluentd forward receiver