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_EDGE_CONTAINER_ENDPOINT=... overrides the EndpointOption (which defaults to "edgecontainer.googleapis.com") used by MakeEdgeContainerConnection().
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."],[[["The latest release candidate version for this library is 2.37.0-rc, with several other versions available, ranging from 2.36.0 down to 2.11.0, for reference and use."],["Environment variables can be used to override the default endpoint, such as `GOOGLE_CLOUD_CPP_EDGE_CONTAINER_ENDPOINT` for modifying the `EndpointOption`."],["Tracing for gRPC calls can be enabled using `GOOGLE_CLOUD_CPP_ENABLE_TRACING=rpc`, which logs requests and responses, often requiring `GOOGLE_CLOUD_CPP_ENABLE_CLOG` to see the output."],["The `GOOGLE_CLOUD_CPP_TRACING_OPTIONS` environment variable offers customization of gRPC tracing behaviors, like adjusting message output and field truncation."],["`GOOGLE_CLOUD_CPP_ENABLE_CLOG=yes` enables logging in the library, which can be used to display logs on the program's console when no other backend is configured."]]],[]]
