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_APIGEE_CONNECTION_SERVICE_ENDPOINT=... overrides the EndpointOption (which defaults to "apigeeconnect.googleapis.com") used by MakeConnection().
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 document provides a comprehensive list of Apigee Connect C++ library versions, ranging from version 2.11.0 up to the latest release candidate, 2.37.0-rc."],["The document describes environment variables that can be used to configure the behavior of the Apigee Connect C++ library for troubleshooting, with a focus on endpoint overrides, and logging capabilities."],["The `GOOGLE_CLOUD_CPP_APIGEE_CONNECTION_SERVICE_ENDPOINT` variable allows overriding the default endpoint, while `GOOGLE_CLOUD_CPP_ENABLE_TRACING` and `GOOGLE_CLOUD_CPP_ENABLE_CLOG` variables control gRPC call tracing and logging."],["The document explains how to utilize `GOOGLE_CLOUD_CPP_TRACING_OPTIONS` to customize gRPC tracing behavior, such as message formatting and field truncation."],["`GOOGLE_CLOUD_PROJECT` environment variable is detailed as a method to set the GCP project in examples and integration tests, however it does not impact the library operations."]]],[]]
