A number of environment variables can be used to configure the behavior of the library. There are also functions to configure this behavior in code. The environment variables are convenient when troubleshooting problems.
Endpoint Overrides
GOOGLE_CLOUD_CPP_EXPORT_SERVICE_ENDPOINT=... overrides the EndpointOption (which defaults to "cloudprofiler.googleapis.com") used by MakeExportServiceConnection().
GOOGLE_CLOUD_CPP_PROFILER_SERVICE_ENDPOINT=... overrides the EndpointOption (which defaults to "cloudprofiler.googleapis.com") used by MakeProfilerServiceConnection().
GOOGLE_CLOUD_CPP_ENABLE_TRACING=rpc: turns on tracing for most gRPC calls. The library injects an additional Stub decorator that prints each gRPC request and response. Unless you have configured your own logging backend, you should also set GOOGLE_CLOUD_CPP_ENABLE_CLOG to produce any output on the program's console.
See Also
google::cloud::LoggingComponentsOptionGOOGLE_CLOUD_CPP_TRACING_OPTIONS=...: modifies the behavior of gRPC tracing, including whether messages will be output on multiple lines, or whether string/bytes fields will be truncated.
See Also
google::cloud::GrpcTracingOptionsOptionGOOGLE_CLOUD_CPP_ENABLE_CLOG=yes: turns on logging in the library, basically the library always "logs" but the logging infrastructure has no backend to actually print anything until the application sets a backend or they set this environment variable.
[[["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 2025-03-21 UTC."],[[["This document outlines environment variables and configurations for the C++ Profiler library, with the latest release candidate being version 2.37.0-rc and a list of previous versions down to 2.11.0."],["Environment variables can be used to configure the library's behavior, and functions are available for in-code configuration, particularly useful for troubleshooting."],["Endpoint overrides can be set using `GOOGLE_CLOUD_CPP_EXPORT_SERVICE_ENDPOINT` and `GOOGLE_CLOUD_CPP_PROFILER_SERVICE_ENDPOINT`, allowing customization of the default endpoint."],["Tracing for gRPC calls can be enabled with `GOOGLE_CLOUD_CPP_ENABLE_TRACING=rpc`, and `GOOGLE_CLOUD_CPP_ENABLE_CLOG` can be set to output to the console, while `GOOGLE_CLOUD_CPP_TRACING_OPTIONS` modifies the behavior of the tracing output."],["`GOOGLE_CLOUD_PROJECT` is used to configure the GCP project in examples and integration tests, which is for testing and examples, and it does not impact the library's functionality."]]],[]]
