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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 OverridesGOOGLE_CLOUD_CPP_STORAGE_INSIGHTS_ENDPOINT=...
overrides the EndpointOption
(which defaults to "storageinsights.googleapis.com") used by MakeStorageInsightsConnection()
.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.
google::cloud::TracingComponentsOption
GOOGLE_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.
google::cloud::GrpcTracingOptionsOption
GOOGLE_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.
GOOGLE_CLOUD_PROJECT=...
: is used in examples and integration tests to configure the GCP project. This has no effect in the library.
Except as otherwise noted, the content of this page is licensed under the Creative Commons Attribution 4.0 License, and code samples are licensed under the Apache 2.0 License. For details, see the Google Developers Site Policies. Java is a registered trademark of Oracle and/or its affiliates.
Last updated 2025-08-14 UTC.
[[["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 2025-08-14 UTC."],[[["The webpage documents environment variables and library behaviors for Google Cloud Storage Insights, with the latest release candidate being version 2.37.0-rc."],["A range of prior versions, from 2.36.0 down to 2.11.0, are accessible, each with their own documentation page for Storage Insights environment settings."],["`GOOGLE_CLOUD_CPP_STORAGE_INSIGHTS_ENDPOINT` allows overriding the default endpoint, while `GOOGLE_CLOUD_CPP_ENABLE_TRACING` activates gRPC call tracing, and `GOOGLE_CLOUD_CPP_ENABLE_CLOG` enables library logging."],["`GOOGLE_CLOUD_CPP_TRACING_OPTIONS` modifies gRPC tracing behavior, and `GOOGLE_CLOUD_PROJECT` is utilized in examples/tests to specify the GCP project, but does not change the library."],["Environment variables are particularly helpful when troubleshooting issues and the behaviors can be configured in the code."]]],[]]
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