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_MANAGED_NOTEBOOK_SERVICE_ENDPOINT=... overrides the EndpointOption (which defaults to "notebooks.googleapis.com") used by MakeManagedNotebookServiceConnection().
GOOGLE_CLOUD_CPP_NOTEBOOK_SERVICE_ENDPOINT=... overrides the EndpointOption (which defaults to "notebooks.googleapis.com") used by MakeNotebookServiceConnection().
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 2025-04-17 UTC."],[[["This document outlines various versions of the C++ library, ranging from the latest release candidate `2.37.0-rc` to version `2.11.0`, providing links to their respective documentation pages."],["Environment variables can be used to configure the library's behavior, which is particularly helpful for troubleshooting and adjusting settings like the service endpoint."],["`GOOGLE_CLOUD_CPP_MANAGED_NOTEBOOK_SERVICE_ENDPOINT` and `GOOGLE_CLOUD_CPP_NOTEBOOK_SERVICE_ENDPOINT` environment variables can override the default endpoint used for the notebooks service."],["Tracing for gRPC calls can be enabled using `GOOGLE_CLOUD_CPP_ENABLE_TRACING=rpc`, and detailed behavior adjustments can be applied with `GOOGLE_CLOUD_CPP_TRACING_OPTIONS`."],["Logging can be enabled by setting `GOOGLE_CLOUD_CPP_ENABLE_CLOG=yes`, activating the logging infrastructure to produce output on the console."]]],[]]
