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_CLOUD_CHANNEL_REPORTS_SERVICE_ENDPOINT=... overrides the EndpointOption (which defaults to "cloudchannel.googleapis.com") used by MakeCloudChannelReportsServiceConnection().
GOOGLE_CLOUD_CPP_CLOUD_CHANNEL_SERVICE_ENDPOINT=... overrides the EndpointOption (which defaults to "cloudchannel.googleapis.com") used by MakeCloudChannelServiceConnection().
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 page lists the available versions of the C++ library, ranging from version 2.11.0 up to the latest release candidate, 2.37.0-rc."],["Environment variables such as `GOOGLE_CLOUD_CPP_CLOUD_CHANNEL_REPORTS_SERVICE_ENDPOINT` and `GOOGLE_CLOUD_CPP_CLOUD_CHANNEL_SERVICE_ENDPOINT` allow for overriding default endpoints."],["The environment variable `GOOGLE_CLOUD_CPP_ENABLE_TRACING` can be set to \"rpc\" to activate tracing for most gRPC calls, helping with debugging."],["Setting the `GOOGLE_CLOUD_CPP_ENABLE_CLOG` environment variable to \"yes\" will turn on the logging within the library allowing for output on the program's console."],["`GOOGLE_CLOUD_PROJECT` can be set in examples and integration tests, but it will not have an effect in the library."]]],[]]
