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_ACCESS_APPROVAL_ENDPOINT=... overrides the EndpointOption (which defaults to "accessapproval.googleapis.com") used by MakeAccessApprovalConnection().
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 2025-03-21 UTC."],[[["This document outlines environment variables and version-specific details for the Access Approval C++ library, with version 2.37.0-rc being the most recent release candidate."],["The `GOOGLE_CLOUD_CPP_ACCESS_APPROVAL_ENDPOINT` environment variable can be used to override the default endpoint for Access Approval."],["Tracing of gRPC calls can be enabled by setting the `GOOGLE_CLOUD_CPP_ENABLE_TRACING` environment variable, which will output tracing details to the console if `GOOGLE_CLOUD_CPP_ENABLE_CLOG` is also set."],["The `GOOGLE_CLOUD_PROJECT` environment variable is used for configuration in examples and tests but does not impact the behavior of the Access Approval library itself."],["Multiple versions of the Access Approval library are documented, ranging from version 2.11.0 up to the latest release candidate 2.37.0-rc, with the current version of the page set to 2.15.1."]]],[]]
