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 latest version available is 2.37.0-rc, with numerous other versions dating back to 2.10.1 also accessible via the provided links."],["This documentation describes how to enable the generation of traces within the client library using OpenTelemetry, by way of the `OpenTelemetryTracingOption` setting."],["Enabling tracing requires that the library be compiled with OpenTelemetry, and it does not enable exporting these traces automatically, requiring additional configuration."],["The `GOOGLE_CLOUD_CPP_OPENTELEMETRY_TRACING` environment variable can be used to control whether OpenTelemetry tracing is enabled."],["To export traces, use `#google::cloud::otel::ConfigureBasicTracing()` to configure the global tracer provider, which will direct traces to Cloud Trace, or use another way to set the global tracer."]]],[]]
