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_VMWARE_ENGINE_ENDPOINT=... overrides the EndpointOption (which defaults to "vmwareengine.googleapis.com") used by MakeVmwareEngineConnection().
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."],[[["The latest version available for the VMware Engine is `2.37.0-rc`, but multiple versions are available going back to `2.11.0` for selection."],["Environment variables like `GOOGLE_CLOUD_CPP_VMWARE_ENGINE_ENDPOINT` can override default settings, such as the Endpoint used by `MakeVmwareEngineConnection()`."],["The environment variable `GOOGLE_CLOUD_CPP_ENABLE_TRACING` enables gRPC call tracing, and it can be paired with `GOOGLE_CLOUD_CPP_ENABLE_CLOG` to ensure output is displayed in the console."],["`GOOGLE_CLOUD_CPP_TRACING_OPTIONS` modifies the behavior of gRPC tracing, including the formatting and truncation of messages."],["`GOOGLE_CLOUD_CPP_ENABLE_CLOG` turns on logging in the library, this allows for output to be printed to the program's console."]]],[]]
