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_DEPLOY_ENDPOINT=... overrides the EndpointOption (which defaults to "clouddeploy.googleapis.com") used by MakeCloudDeployConnection().
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::TracingComponentsOptionGOOGLE_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 2025-03-05 UTC."],[[["This page provides documentation for various versions of the C++ library, ranging from version 2.11.0 up to the latest release candidate 2.37.0-rc, with links to specific deployment environment details for each version."],["Environment variables such as `GOOGLE_CLOUD_CPP_CLOUD_DEPLOY_ENDPOINT` can be used to override default configurations, specifically to modify the endpoint used by `MakeCloudDeployConnection()`."],["The `GOOGLE_CLOUD_CPP_ENABLE_TRACING` and `GOOGLE_CLOUD_CPP_TRACING_OPTIONS` environment variables manage gRPC call tracing and its output format, which can be particularly helpful for troubleshooting."],["The environment variable `GOOGLE_CLOUD_CPP_ENABLE_CLOG` is used to enable the logging infrastructure in the library, allowing the application to print logs."],["Although it has no effect on the library itself, `GOOGLE_CLOUD_PROJECT` is used in examples and tests to configure the default GCP project."]]],[]]
