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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 OverridesGOOGLE_CLOUD_CPP_BINAUTHZ_MANAGEMENT_SERVICE_V1_ENDPOINT=... overrides the EndpointOption (which defaults to "binaryauthorization.googleapis.com") used by MakeBinauthzManagementServiceV1Connection().GOOGLE_CLOUD_CPP_SYSTEM_POLICY_V1_ENDPOINT=... overrides the EndpointOption (which defaults to "binaryauthorization.googleapis.com") used by MakeSystemPolicyV1Connection().GOOGLE_CLOUD_CPP_VALIDATION_HELPER_V1_ENDPOINT=... overrides the EndpointOption (which defaults to "binaryauthorization.googleapis.com") used by MakeValidationHelperV1Connection().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.
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.
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.
GOOGLE_CLOUD_PROJECT=...: is used in examples and integration tests to configure the GCP project. This has no effect in the library.
Except as otherwise noted, the content of this page is licensed under the Creative Commons Attribution 4.0 License, and code samples are licensed under the Apache 2.0 License. For details, see the Google Developers Site Policies. Java is a registered trademark of Oracle and/or its affiliates.
Last updated 2025-08-14 UTC.
[[["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 2025-08-14 UTC."],[[["The latest version available is 2.37.0-rc, with numerous previous versions from 2.36.0 down to 2.11.0 also available for reference."],["Environment variables can be used to configure the library's behavior, especially useful for troubleshooting, and there are also corresponding in-code functions to configure it."],["Endpoint overrides can be set via environment variables, such as `GOOGLE_CLOUD_CPP_BINAUTHZ_MANAGEMENT_SERVICE_V1_ENDPOINT`, to change the default endpoint used by various connections."],["Logging can be enabled and customized using variables like `GOOGLE_CLOUD_CPP_ENABLE_TRACING`, `GOOGLE_CLOUD_CPP_TRACING_OPTIONS`, and `GOOGLE_CLOUD_CPP_ENABLE_CLOG` to control gRPC tracing and output behavior."],["Setting `GOOGLE_CLOUD_PROJECT` configures the GCP project for examples and integration tests, but it has no impact on the operation of the library."]]],[]]
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