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_CONNECTORS_ENDPOINT=... overrides the EndpointOption (which defaults to "connectors.googleapis.com") used by MakeConnectorsConnection().
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 provides reference information for the `connectors-env` and lists available versions from 2.11.0 up to 2.36.0, with 2.37.0-rc being the latest release candidate."],["Environment variables like `GOOGLE_CLOUD_CPP_CONNECTORS_ENDPOINT`, `GOOGLE_CLOUD_CPP_ENABLE_TRACING`, and `GOOGLE_CLOUD_CPP_ENABLE_CLOG` can be utilized to configure the behavior of the library, especially when troubleshooting."],["The `GOOGLE_CLOUD_PROJECT` environment variable is used to configure the GCP project in examples and integration tests, but it does not have any effect on the library's behavior itself."],["Tracing for gRPC calls can be enabled via `GOOGLE_CLOUD_CPP_ENABLE_TRACING=rpc`, which requires setting `GOOGLE_CLOUD_CPP_ENABLE_CLOG` for output to be directed to the program's console."],["Endpoint override can be done via `GOOGLE_CLOUD_CPP_CONNECTORS_ENDPOINT` allowing you to change from the default `connectors.googleapis.com`."]]],[]]
