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_APP_CONNECTIONS_SERVICE_ENDPOINT=... overrides the EndpointOption (which defaults to "beyondcorp.googleapis.com") used by MakeAppConnection().
GOOGLE_CLOUD_CPP_APP_CONNECTORS_SERVICE_ENDPOINT=... overrides the EndpointOption (which defaults to "beyondcorp.googleapis.com") used by MakeAppConnectorsServiceConnection().
GOOGLE_CLOUD_CPP_APP_GATEWAYS_SERVICE_ENDPOINT=... overrides the EndpointOption (which defaults to "beyondcorp.googleapis.com") used by MakeAppGatewaysServiceConnection().
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 2025-03-05 UTC."],[[["The webpage provides documentation for various versions of the BeyondCorp C++ library, ranging from version 2.11.0 up to 2.37.0-rc, with each version having its own specific documentation."],["Environment variables can be used to override default endpoints for the App Connections, App Connectors, and App Gateways services, which are set using specific variables."],["Tracing for gRPC calls can be enabled using the `GOOGLE_CLOUD_CPP_ENABLE_TRACING=rpc` environment variable, which prints gRPC requests and responses, with the potential need to also enable `GOOGLE_CLOUD_CPP_ENABLE_CLOG` to see output."],["Logging within the library is configurable via the `GOOGLE_CLOUD_CPP_ENABLE_CLOG` environment variable, enabling the library's logging infrastructure to output information if set."],["The `GOOGLE_CLOUD_PROJECT` variable can be used to configure the GCP project in examples and integration tests, but doesn't affect the library itself."]]],[]]
