CODEWITHSUNDEEP
spring-bootspring-micrometerdistributed-tracingmicrometer-tracingotel
cjava
cjava

Reputation: 658

Spring boot 3 open telemetry how does the trace id propagation takes place

I am trying to implement observations and monitoring in my local application.

I have a question that how is the trace id propagated from one application to another application. specifically how or where can i find the source code (spring or micrometer) which extracts the x-trace-id, if present, from the request header and sets it to current tracerContext.

Basically i am interested in how the traceId is created.

I read blogs like https://spring.io/blog/2022/10/12/observability-with-spring-boot-3, others, stackoverflow questions and tried reviewing the source code but till i didn't get how its configured.

Upvotes: 0

Views: 601

Answers (1)

Brian Clozel
Brian Clozel

Reputation: 59056

The base infrastructure for propagation is located in the io.micrometer.observation.transport package in micrometer-observation.

Each instrumentation that needs propagation over the network will extend one of these classes for the Observation Context implementation. For example, Spring MVC will get the information from request headers and Micrometer will fetch the information from the relevant header (depending on configuration).

Same applies to HTTP clients, JMS, etc.

Upvotes: 0

Related Questions