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_WEB_RISK_SERVICE_ENDPOINT=...overrides theEndpointOption(which defaults to "webrisk.googleapis.com") used byMakeWebRiskServiceConnection().
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 setGOOGLE_CLOUD_CPP_ENABLE_CLOGto 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 2025-09-04 UTC."],[[["\u003cp\u003eThis document outlines the environment variables and their usage for configuring the behavior of the WebRisk C++ library, with version 2.37.0-rc being the latest release candidate.\u003c/p\u003e\n"],["\u003cp\u003eThe WebRisk C++ library offers multiple version releases, ranging from 2.11.0 up to the latest release candidate, 2.37.0-rc, with direct links provided for each version's documentation.\u003c/p\u003e\n"],["\u003cp\u003eEnvironment variables such as \u003ccode\u003eGOOGLE_CLOUD_CPP_WEB_RISK_SERVICE_ENDPOINT\u003c/code\u003e allow for overriding default settings like the service endpoint, while others such as \u003ccode\u003eGOOGLE_CLOUD_CPP_ENABLE_TRACING\u003c/code\u003e and \u003ccode\u003eGOOGLE_CLOUD_CPP_ENABLE_CLOG\u003c/code\u003e manage logging and tracing functionality.\u003c/p\u003e\n"],["\u003cp\u003eThe library's logging and tracing can be further customized using \u003ccode\u003eGOOGLE_CLOUD_CPP_TRACING_OPTIONS\u003c/code\u003e, which allows for configuring how gRPC messages are displayed.\u003c/p\u003e\n"],["\u003cp\u003eThe \u003ccode\u003eGOOGLE_CLOUD_PROJECT\u003c/code\u003e environment variable is used in examples and integration tests to set the GCP project, but this variable does not affect library behavior.\u003c/p\u003e\n"]]],[],null,["Version 2.35.0keyboard_arrow_down\n\n- [2.42.0-rc (latest)](/cpp/docs/reference/webrisk/latest/webrisk-env)\n- [2.41.0](/cpp/docs/reference/webrisk/2.41.0/webrisk-env)\n- [2.40.0](/cpp/docs/reference/webrisk/2.40.0/webrisk-env)\n- [2.39.0](/cpp/docs/reference/webrisk/2.39.0/webrisk-env)\n- [2.38.0](/cpp/docs/reference/webrisk/2.38.0/webrisk-env)\n- [2.37.0](/cpp/docs/reference/webrisk/2.37.0/webrisk-env)\n- [2.36.0](/cpp/docs/reference/webrisk/2.36.0/webrisk-env)\n- [2.35.0](/cpp/docs/reference/webrisk/2.35.0/webrisk-env)\n- [2.34.0](/cpp/docs/reference/webrisk/2.34.0/webrisk-env)\n- [2.33.0](/cpp/docs/reference/webrisk/2.33.0/webrisk-env)\n- [2.32.0](/cpp/docs/reference/webrisk/2.32.0/webrisk-env)\n- [2.31.0](/cpp/docs/reference/webrisk/2.31.0/webrisk-env)\n- [2.30.0](/cpp/docs/reference/webrisk/2.30.0/webrisk-env)\n- [2.29.0](/cpp/docs/reference/webrisk/2.29.0/webrisk-env)\n- [2.28.0](/cpp/docs/reference/webrisk/2.28.0/webrisk-env)\n- [2.27.0](/cpp/docs/reference/webrisk/2.27.0/webrisk-env)\n- [2.26.0](/cpp/docs/reference/webrisk/2.26.0/webrisk-env)\n- [2.25.1](/cpp/docs/reference/webrisk/2.25.1/webrisk-env)\n- [2.24.0](/cpp/docs/reference/webrisk/2.24.0/webrisk-env)\n- [2.23.0](/cpp/docs/reference/webrisk/2.23.0/webrisk-env)\n- [2.22.1](/cpp/docs/reference/webrisk/2.22.1/webrisk-env)\n- [2.21.0](/cpp/docs/reference/webrisk/2.21.0/webrisk-env)\n- [2.20.0](/cpp/docs/reference/webrisk/2.20.0/webrisk-env)\n- [2.19.0](/cpp/docs/reference/webrisk/2.19.0/webrisk-env)\n- [2.18.0](/cpp/docs/reference/webrisk/2.18.0/webrisk-env)\n- [2.17.0](/cpp/docs/reference/webrisk/2.17.0/webrisk-env)\n- [2.16.0](/cpp/docs/reference/webrisk/2.16.0/webrisk-env)\n- [2.15.1](/cpp/docs/reference/webrisk/2.15.1/webrisk-env)\n- [2.14.0](/cpp/docs/reference/webrisk/2.14.0/webrisk-env)\n- [2.13.0](/cpp/docs/reference/webrisk/2.13.0/webrisk-env)\n- [2.12.0](/cpp/docs/reference/webrisk/2.12.0/webrisk-env)\n- [2.11.0](/cpp/docs/reference/webrisk/2.11.0/webrisk-env) \n\nEnvironment Variables\n=====================\n\nA 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.\n\nEndpoint Overrides\n------------------\n\n- `GOOGLE_CLOUD_CPP_WEB_RISK_SERVICE_ENDPOINT=...` overrides the `EndpointOption` (which defaults to \"webrisk.googleapis.com\") used by `MakeWebRiskServiceConnection()`.\n\n###### See Also\n\n[`google::cloud::EndpointOption`](https://cloud.google.com/cpp/docs/reference/common/latest/structgoogle_1_1cloud_1_1EndpointOption.html)\n\nLogging\n-------\n\n`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.\n\n###### See Also\n\n[`google::cloud::LoggingComponentsOption`](https://cloud.google.com/cpp/docs/reference/common/latest/structgoogle_1_1cloud_1_1LoggingComponentsOption.html)`GOOGLE_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.\n\n###### See Also\n\n[`google::cloud::GrpcTracingOptionsOption`](https://cloud.google.com/cpp/docs/reference/common/latest/structgoogle_1_1cloud_1_1GrpcTracingOptionsOption.html)`GOOGLE_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.\n\n###### See Also\n\n[`google::cloud::LogBackend`](https://cloud.google.com/cpp/docs/reference/common/latest/classgoogle_1_1cloud_1_1LogBackend.html)\n\n###### See Also\n\n[`google::cloud::LogSink`](https://cloud.google.com/cpp/docs/reference/common/latest/classgoogle_1_1cloud_1_1LogSink.html)\n\nSetting the Default Project\n---------------------------\n\n`GOOGLE_CLOUD_PROJECT=...`: is used in examples and integration tests to configure the GCP project. This has no effect in the library."]]
