Module otel 

OpenTelemetry trace context helpers for HTTP headers

Provides W3C Trace Context propagation with optional OpenTelemetry integration.

• With otel feature: Uses proper OTEL propagators for distributed tracing
• Without otel feature: No-op implementations (graceful degradation)

Constants

TRACEPARENT

W3C Trace Context header name

Functions

get_traceparent

Extract traceparent header value from HTTP headers

inject_current_span

No-op: OpenTelemetry is disabled

parse_trace_id

Parse trace ID from W3C traceparent header (format: “00-{trace_id}-{span_id}-{flags}”)

set_parent_from_headers

No-op: OpenTelemetry is disabled Records trace IDs if present in headers for log correlation only.