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."],[[["The webpage provides a comprehensive list of available versions, ranging from the latest release candidate, 2.37.0-rc, to version 2.11.0, all of which link to their corresponding documentation for speech environment settings."],["Environment variables, such as `GOOGLE_CLOUD_CPP_ADAPTATION_ENDPOINT` and `GOOGLE_CLOUD_CPP_SPEECH_ENDPOINT`, can be used to override the default endpoints for adaptation and speech services, respectively."],["The library's logging behavior can be configured via environment variables, with `GOOGLE_CLOUD_CPP_ENABLE_TRACING` enabling tracing for gRPC calls and `GOOGLE_CLOUD_CPP_ENABLE_CLOG` enabling the logging to produce output."],["The `GOOGLE_CLOUD_CPP_TRACING_OPTIONS` environment variable allows for customization of gRPC tracing output, including formatting and truncation of messages, allowing users to refine the level of detail they want to see in the output."],["The `GOOGLE_CLOUD_PROJECT` environment variable is specifically for use in examples and integration testing, it does not have any effect within the library itself."]]],[]]
