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_ADAPTATION_ENDPOINT=... overrides the EndpointOption (which defaults to "speech.googleapis.com") used by MakeAdaptationConnection().
GOOGLE_CLOUD_CPP_SPEECH_ENDPOINT=... overrides the EndpointOption (which defaults to "speech.googleapis.com") used by MakeSpeechConnection().
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 C++ Speech library, ranging from version 2.11.0 up to the latest release candidate, 2.37.0-rc."],["The library's behavior can be configured using environment variables or in-code functions, which is particularly useful for troubleshooting."],["Endpoint overrides are supported via `GOOGLE_CLOUD_CPP_ADAPTATION_ENDPOINT` and `GOOGLE_CLOUD_CPP_SPEECH_ENDPOINT` to change the default endpoint for adaptation and speech connections respectively."],["Tracing for gRPC calls can be enabled by setting `GOOGLE_CLOUD_CPP_ENABLE_TRACING=rpc`, and logging output can be directed to the console by setting `GOOGLE_CLOUD_CPP_ENABLE_CLOG`."],["`GOOGLE_CLOUD_PROJECT` is used for setting the GCP project in examples and tests, but it does not directly impact the library's functionality."]]],[]]
