opentelemetry-propagator-ot-trace 0.49b2

OT Trace Propagator for OpenTelemetry

Installation

pip install opentelemetry-propagator-ot-trace

OTTrace Format

So far there is no “formal” specification of the OTTrace format. The best document that servers this purpose that exists now is this implementation.

Header Name	Description	Required
ot-tracer-traceid	uint64 encoded as a string of 16 hex characters	yes
ot-tracer-spanid	uint64 encoded as a string of 16 hex characters	yes
ot-tracer-sampled	boolean encoded as a string with the values true or false	no
ot-baggage-*	repeated string to string key-value baggage items; keys are prefixed with ot-baggage- and the corresponding value is the raw string	if baggage is present

Interop and trace ids

The OT Trace propagation format expects trace ids to be 64-bits. In order to interop with OpenTelemetry, trace ids need to be truncated to 64-bits before sending them on the wire. When truncating, the least significant (right-most) bits MUST be retained. For example, a trace id of 3c3039f4d78d5c02ee8e3e41b17ce105 would be truncated to ee8e3e41b17ce105.

References

• OpenTelemetry Project