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_AUTOML_PREDICTION_SERVICE_ENDPOINT=... overrides the EndpointOption (which defaults to "automl.googleapis.com") used by MakePredictionServiceConnection().
GOOGLE_CLOUD_CPP_AUTO_ML_ENDPOINT=... overrides the EndpointOption (which defaults to "automl.googleapis.com") used by MakeAutoMlConnection().
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 2025-03-21 UTC."],[[["This page provides documentation for various versions of the AutoML C++ library, ranging from version 2.11.0 up to the release candidate 2.37.0-rc, with the most recent being version 2.37.0-rc."],["Environment variables such as `GOOGLE_CLOUD_CPP_AUTOML_PREDICTION_SERVICE_ENDPOINT` and `GOOGLE_CLOUD_CPP_AUTO_ML_ENDPOINT` can be utilized to override default endpoints for the AutoML service."],["The `GOOGLE_CLOUD_CPP_ENABLE_TRACING` environment variable enables detailed tracing for gRPC calls, providing insights into requests and responses, and requires `GOOGLE_CLOUD_CPP_ENABLE_CLOG` to be set to produce output."],["`GOOGLE_CLOUD_CPP_TRACING_OPTIONS` can be set to modify the behavior of the gRPC tracing, changing the formatting and content shown in the trace."],["Setting the environment variable `GOOGLE_CLOUD_PROJECT` can be used to determine the GCP project used in examples and testing, but it does not affect the library directly."]]],[]]
