JustAPI includes built-in OpenTelemetry tracing with OTLP gRPC export.

Enabling Tracing

from justapi.tracing import init_otlp_tracing

init_otlp_tracing(
    endpoint="http://localhost:4317",
    service_name="my-justapi-service",
)

Jaeger Stack

Generated projects include docker-compose.otel.yml:

services:
  jaeger:
    image: jaegertracing/all-in-one:latest
    ports:
      - "16686:16686"  # Jaeger UI
      - "4318:4318"    # OTLP HTTP
      - "4317:4317"    # OTLP gRPC

docker compose -f docker-compose.otel.yml up -d

Access the Jaeger UI at http://localhost:16686.

Trace Spans

Each request generates spans:

Context Propagation

Trace context propagates across the Python↔Rust boundary using thread-local variables. No manual instrumentation is needed.

Environment Variables

See Also

• Metrics & Monitoring — Prometheus metrics
• Structured Logging — Log configuration
• Health Checks — Health endpoints