receivers:
  otlp:
    protocols:
      grpc:
        endpoint: 0.0.0.0:4317
      http:
        endpoint: 0.0.0.0:4318

processors:
  batch:
    timeout: 1s
    send_batch_size: 1024

  memory_limiter:
    check_interval: 5s
    limit_mib: 512

  resource:
    attributes:
      - key: cluster
        value: didi-prod
        action: insert
      - key: environment
        value: production
        action: insert

  tail_sampling:
    decision_wait: 10s
    num_traces: 100
    expected_new_traces_per_sec: 10
    policies:
      - name: errors-policy
        type: status_code
        status_code: { status_codes: [ERROR] }
      - name: slow-traces-policy
        type: latency
        latency: { threshold_ms: 1000 }
      - name: random-sampling
        type: probabilistic
        probabilistic: { sampling_percentage: 10 }

exporters:
  # Jaeger receives via OTLP natively
  otlp/jaeger:
    endpoint: didi-jaeger:4317
    tls:
      insecure: true

  # Prometheus exporter for service metrics derived from spans
  prometheus:
    endpoint: 0.0.0.0:8889
    namespace: otel
    const_labels:
      cluster: didi-prod

  # Log to stdout for debugging (disable in prod)
  debug:
    verbosity: basic

extensions:
  health_check:
    endpoint: 0.0.0.0:13133

service:
  extensions: [health_check]
  pipelines:
    traces:
      receivers: [otlp]
      processors: [memory_limiter, resource, tail_sampling, batch]
      exporters: [otlp/jaeger]
    metrics:
      receivers: [otlp]
      processors: [memory_limiter, resource, batch]
      exporters: [prometheus]
  telemetry:
    metrics:
      address: 0.0.0.0:8888