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 tracing in the C++ client library using OpenTelemetry, with the latest version being 2.37.0-rc and the current version being 2.34.0."],["Enabling tracing requires compiling the library with OpenTelemetry and setting the `OpenTelemetryTracingOption`, and this option should be used with factory functions like `Make*Connection(...)` and `Make*Credentials(...)`."],["Generating traces does not export them; trace exporting requires setting a global tracer provider, with `#google::cloud::otel::ConfigureBasicTracing()` recommended for sending traces to Google Cloud Trace."],["The `GOOGLE_CLOUD_CPP_OPENTELEMETRY_TRACING` environment variable can be used to control whether tracing is enabled, with any non-empty value turning it on."],["The `OpenTelemetryTracingOption` option allows the client library to use a global tracer provider to generate traces within the application."]]],[]]
