Setting this option enables the generation of traces by the client library. The library uses the global tracer provider to generate traces.
To create a client that traces, this option must be provided to the Make*Connection(...) factory functions. It does not have an effect when passed to a client's constructor. If you use custom credentials, this option must also be provided to the Make*Credentials(...) factory functions in order to trace the authentication components.
Exporting traces
Providing this option only enables the generation of traces. It does not enable the export of traces.
In order to export the traces, the application must set the global tracer provider. The client library recommends using #google::cloud::otel::ConfigureBasicTracing() to configure the global tracer provider. This will send the traces generated by the client library to Cloud Trace, Google Cloud's visualizer for distributed traces.
This option is controlled by the GOOGLE_CLOUD_CPP_OPENTELEMETRY_TRACING environment variable. If the environment variable is set to a non-empty value, tracing with OpenTelemetry is enabled.
[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Hard to understand","hardToUnderstand","thumb-down"],["Incorrect information or sample code","incorrectInformationOrSampleCode","thumb-down"],["Missing the information/samples I need","missingTheInformationSamplesINeed","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-03-05 UTC."],[[["The webpage details how to enable OpenTelemetry tracing in the Google Cloud C++ client library, allowing for the generation of distributed traces."],["The latest release candidate version available is 2.37.0-rc, with a comprehensive list of previous versions ranging down to 2.10.1, all of which can enable tracing."],["Enabling this feature requires the library to be compiled with OpenTelemetry, and setting the `GOOGLE_CLOUD_CPP_OPENTELEMETRY_TRACING` environment variable can also enable it."],["While this option enables trace generation, the application must configure the global tracer provider, like with `#google::cloud::otel::ConfigureBasicTracing()`, for traces to be exported, such as to Google Cloud Trace."],["This tracing option is applied via factory functions like `Make*Connection(...)` and `Make*Credentials(...)`, and it must be set in those methods to be properly applied."]]],[]]
