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_ARTIFACT_REGISTRY_ENDPOINT=... overrides the EndpointOption (which defaults to "artifactregistry.googleapis.com") used by MakeArtifactRegistryConnection().
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 outlines environment variables and configuration options for the C++ Artifact Registry library, including how to adjust logging, tracing, and endpoint behavior."],["Version 2.37.0-rc is the latest release candidate, and there are several previous versions available, dating back to version 2.11.0 for users who need to reference older versions."],["The `GOOGLE_CLOUD_CPP_ARTIFACT_REGISTRY_ENDPOINT` variable can override the default endpoint, allowing you to connect to a different Artifact Registry instance."],["Environment variables such as `GOOGLE_CLOUD_CPP_ENABLE_TRACING`, `GOOGLE_CLOUD_CPP_TRACING_OPTIONS`, and `GOOGLE_CLOUD_CPP_ENABLE_CLOG` can be used to configure and troubleshoot logging and tracing behavior for gRPC calls."],["The environment variable `GOOGLE_CLOUD_PROJECT` is used for configuration in examples and tests, but does not have an effect on the library's core functionality."]]],[]]
