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_BUDGET_SERVICE_ENDPOINT=... overrides the EndpointOption (which defaults to "billingbudgets.googleapis.com") used by MakeBudgetServiceConnection().
GOOGLE_CLOUD_CPP_CLOUD_BILLING_ENDPOINT=... overrides the EndpointOption (which defaults to "cloudbilling.googleapis.com") used by MakeCloudBillingConnection().
GOOGLE_CLOUD_CPP_CLOUD_CATALOG_ENDPOINT=... overrides the EndpointOption (which defaults to "cloudbilling.googleapis.com") used by MakeCloudCatalogConnection().
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::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 2025-03-21 UTC."],[[["This document provides reference information for multiple versions of a C++ billing library, ranging from version 2.11.0 up to the latest release candidate 2.37.0-rc."],["The document details how to configure the library's behavior using environment variables, especially when troubleshooting, including the ability to set custom endpoints for budget, cloud billing, and cloud catalog services."],["Logging and tracing functionalities can be activated and customized using several environment variables, such as `GOOGLE_CLOUD_CPP_ENABLE_TRACING`, `GOOGLE_CLOUD_CPP_TRACING_OPTIONS`, and `GOOGLE_CLOUD_CPP_ENABLE_CLOG`, allowing for detailed inspection of gRPC calls and program output."],["Setting the default project through the environment variable `GOOGLE_CLOUD_PROJECT` will have no effect on the library, but is useful for examples and integration testing."]]],[]]
