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_CONSUMER_PROCUREMENT_SERVICE_ENDPOINT=...overrides theEndpointOption(which defaults to "cloudcommerceconsumerprocurement.googleapis.com") used byMakeConsumerProcurementServiceConnection().
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 provides version-specific documentation for the Commerce environment, with the latest release candidate being version 2.37.0-rc and a list of previous versions dating back to 2.14.0.\u003c/p\u003e\n"],["\u003cp\u003eEnvironment variables can be used to configure the library's behavior, and endpoint overrides can be specified with variables like \u003ccode\u003eGOOGLE_CLOUD_CPP_CONSUMER_PROCUREMENT_SERVICE_ENDPOINT\u003c/code\u003e.\u003c/p\u003e\n"],["\u003cp\u003eThe \u003ccode\u003eGOOGLE_CLOUD_CPP_ENABLE_TRACING\u003c/code\u003e and \u003ccode\u003eGOOGLE_CLOUD_CPP_TRACING_OPTIONS\u003c/code\u003e variables enable and modify gRPC tracing, useful for debugging and understanding the flow of requests and responses.\u003c/p\u003e\n"],["\u003cp\u003e\u003ccode\u003eGOOGLE_CLOUD_CPP_ENABLE_CLOG=yes\u003c/code\u003e activates logging in the library, allowing the application to output logs to the console if no other logging backend is configured.\u003c/p\u003e\n"],["\u003cp\u003eWhile \u003ccode\u003eGOOGLE_CLOUD_PROJECT\u003c/code\u003e can set the project in examples and integration tests, it has no effect within the core library functionality.\u003c/p\u003e\n"]]],[],null,["Version 2.34.0keyboard_arrow_down\n\n- [2.42.0-rc (latest)](/cpp/docs/reference/commerce/latest/commerce-env)\n- [2.41.0](/cpp/docs/reference/commerce/2.41.0/commerce-env)\n- [2.40.0](/cpp/docs/reference/commerce/2.40.0/commerce-env)\n- [2.39.0](/cpp/docs/reference/commerce/2.39.0/commerce-env)\n- [2.38.0](/cpp/docs/reference/commerce/2.38.0/commerce-env)\n- [2.37.0](/cpp/docs/reference/commerce/2.37.0/commerce-env)\n- [2.36.0](/cpp/docs/reference/commerce/2.36.0/commerce-env)\n- [2.35.0](/cpp/docs/reference/commerce/2.35.0/commerce-env)\n- [2.34.0](/cpp/docs/reference/commerce/2.34.0/commerce-env)\n- [2.33.0](/cpp/docs/reference/commerce/2.33.0/commerce-env)\n- [2.32.0](/cpp/docs/reference/commerce/2.32.0/commerce-env)\n- [2.31.0](/cpp/docs/reference/commerce/2.31.0/commerce-env)\n- [2.30.0](/cpp/docs/reference/commerce/2.30.0/commerce-env)\n- [2.29.0](/cpp/docs/reference/commerce/2.29.0/commerce-env)\n- [2.28.0](/cpp/docs/reference/commerce/2.28.0/commerce-env)\n- [2.27.0](/cpp/docs/reference/commerce/2.27.0/commerce-env)\n- [2.26.0](/cpp/docs/reference/commerce/2.26.0/commerce-env)\n- [2.25.1](/cpp/docs/reference/commerce/2.25.1/commerce-env)\n- [2.24.0](/cpp/docs/reference/commerce/2.24.0/commerce-env)\n- [2.23.0](/cpp/docs/reference/commerce/2.23.0/commerce-env)\n- [2.22.1](/cpp/docs/reference/commerce/2.22.1/commerce-env)\n- [2.21.0](/cpp/docs/reference/commerce/2.21.0/commerce-env)\n- [2.20.0](/cpp/docs/reference/commerce/2.20.0/commerce-env)\n- [2.19.0](/cpp/docs/reference/commerce/2.19.0/commerce-env)\n- [2.18.0](/cpp/docs/reference/commerce/2.18.0/commerce-env)\n- [2.17.0](/cpp/docs/reference/commerce/2.17.0/commerce-env)\n- [2.16.0](/cpp/docs/reference/commerce/2.16.0/commerce-env)\n- [2.15.1](/cpp/docs/reference/commerce/2.15.1/commerce-env)\n- [2.14.0](/cpp/docs/reference/commerce/2.14.0/commerce-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_CONSUMER_PROCUREMENT_SERVICE_ENDPOINT=...` overrides the `EndpointOption` (which defaults to \"cloudcommerceconsumerprocurement.googleapis.com\") used by `MakeConsumerProcurementServiceConnection()`.\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."]]
