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_TRANSLATION_SERVICE_ENDPOINT=... overrides the EndpointOption (which defaults to "translate.googleapis.com") used by MakeTranslationServiceConnection().
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 2025-03-14 UTC."],[[["This document provides environment variable configurations and version history for a C++ translation library, starting with version 2.23.0 and including links to documentation for each version up to the latest release candidate, 2.37.0-rc."],["The `GOOGLE_CLOUD_CPP_TRANSLATION_SERVICE_ENDPOINT` environment variable allows users to override the default endpoint for the translation service, which is normally \"translate.googleapis.com\"."],["Tracing for gRPC calls can be enabled using `GOOGLE_CLOUD_CPP_ENABLE_TRACING=rpc`, and logging can be enabled by setting `GOOGLE_CLOUD_CPP_ENABLE_CLOG=yes`, which allows the library's internal logs to be output to the console."],["The `GOOGLE_CLOUD_CPP_TRACING_OPTIONS` environment variable can be utilized to modify the behavior of gRPC tracing, such as formatting and truncating details."],["The environment variable `GOOGLE_CLOUD_PROJECT` can be used in examples and integration tests to configure the GCP project, but this environment variable will not have any effect in the library itself."]]],[]]
