bookmark_borderbookmark
Stay organized with collections
Save and categorize content based on your preferences.
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_DATASTREAM_ENDPOINT=... overrides the EndpointOption (which defaults to "datastream.googleapis.com") used by MakeDatastreamConnection().
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 of the datastream environment is `2.37.0-rc`, which can be accessed via the provided link, and there is a list of previous versions, starting from `2.36.0` and going down to `2.11.0`, that are also available."],["Environment variables can be used to configure the library's behavior and are particularly useful for troubleshooting, along with the availability of functions to set the configuration in code."],["`GOOGLE_CLOUD_CPP_DATASTREAM_ENDPOINT` can be used to override the default endpoint used by `MakeDatastreamConnection()`."],["Tracing for gRPC calls can be enabled by setting `GOOGLE_CLOUD_CPP_ENABLE_TRACING=rpc`, and console output for logging can be turned on using `GOOGLE_CLOUD_CPP_ENABLE_CLOG`."],["`GOOGLE_CLOUD_PROJECT` can be set to configure the GCP project for examples and tests, though it has no effect on the library itself."]]],[]]
