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."],[[["This 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 version 2.36.0 being the most recent non-release candidate version."],["To enable tracing, the library must be compiled with OpenTelemetry and this option provided to the `Make*Connection(...)` and `Make*Credentials(...)` factory functions."],["Enabling tracing only generates traces; to export them, the application needs to set the global tracer provider, with `#google::cloud::otel::ConfigureBasicTracing()` recommended for sending traces to Cloud Trace."],["The `GOOGLE_CLOUD_CPP_OPENTELEMETRY_TRACING` environment variable can also be used to enable OpenTelemetry tracing, as long as it has been set to a non-empty value."]]],[]]
