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_CONTEXT_MANAGER_ENDPOINT=... overrides the EndpointOption (which defaults to "accesscontextmanager.googleapis.com") used by MakeAccessContextManagerConnection().
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."],[[["The latest release candidate version for the Access Context Manager is 2.37.0-rc, and the page provides links to the documentation for this and other versions."],["The documentation covers versions 2.11.0 through 2.37.0-rc, allowing users to access documentation for various past and current releases of the Access Context Manager."],["Environment variables like `GOOGLE_CLOUD_CPP_ACCESS_CONTEXT_MANAGER_ENDPOINT` can override default settings, and can be helpful when troubleshooting problems."],["The library supports logging and tracing capabilities, which can be enabled and configured via environment variables such as `GOOGLE_CLOUD_CPP_ENABLE_TRACING` and `GOOGLE_CLOUD_CPP_ENABLE_CLOG`."],["The `GOOGLE_CLOUD_PROJECT` environment variable is used in examples and tests but does not affect the behavior of the library itself."]]],[]]
