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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_ALLOY_DB_ADMIN_ENDPOINT=... overrides the EndpointOption (which defaults to "alloydb.googleapis.com") used by MakeAlloyDBAdminConnection().
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 lists the available versions of the AlloyDB C++ client library, ranging from version 2.11.0 up to the latest release candidate 2.37.0-rc."],["Environment variables can be set to configure the library's behavior, such as overriding the default endpoint using `GOOGLE_CLOUD_CPP_ALLOY_DB_ADMIN_ENDPOINT`."],["Tracing for gRPC calls can be enabled by setting `GOOGLE_CLOUD_CPP_ENABLE_TRACING=rpc`, which will print each gRPC request and response."],["Logging can be enabled within the library by setting `GOOGLE_CLOUD_CPP_ENABLE_CLOG=yes`, which will output to the console unless another logging backend is configured."],["The environment variable `GOOGLE_CLOUD_PROJECT` is used in examples and integration tests to set the GCP project, but does not affect the library's operation directly."]]],[]]
