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_CASE_ATTACHMENT_SERVICE_ENDPOINT=... overrides the EndpointOption (which defaults to "cloudsupport.googleapis.com") used by MakeCaseAttachmentServiceConnection().
GOOGLE_CLOUD_CPP_CASE_SERVICE_ENDPOINT=... overrides the EndpointOption (which defaults to "cloudsupport.googleapis.com") used by MakeCaseServiceConnection().
GOOGLE_CLOUD_CPP_COMMENT_SERVICE_ENDPOINT=... overrides the EndpointOption (which defaults to "cloudsupport.googleapis.com") used by MakeCommentServiceConnection().
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::TracingComponentsOptionGOOGLE_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 outlines environment variables and settings for configuring the C++ library, with the most recent release candidate being version 2.37.0-rc, and provides documentation for versions dating back to 2.11.0."],["Environment variables such as `GOOGLE_CLOUD_CPP_CASE_ATTACHMENT_SERVICE_ENDPOINT`, `GOOGLE_CLOUD_CPP_CASE_SERVICE_ENDPOINT`, and `GOOGLE_CLOUD_CPP_COMMENT_SERVICE_ENDPOINT` allow for overriding default endpoints used by various service connections."],["The `GOOGLE_CLOUD_CPP_ENABLE_TRACING` and `GOOGLE_CLOUD_CPP_TRACING_OPTIONS` variables are used to control gRPC call tracing and its formatting, which can be useful for debugging and understanding the library's interactions."],["Enabling logging within the library can be achieved by setting the `GOOGLE_CLOUD_CPP_ENABLE_CLOG` variable, allowing logs to be printed to the program's console when coupled with a configured logging backend."],["`GOOGLE_CLOUD_PROJECT` variable is used for examples and integration tests to specify the GCP project but does not affect the library's functionality."]]],[]]
