Common Components for the Google Cloud C++ Client Libraries

Overview

This library contains common components shared by all the Google Cloud C++ Client Libraries. Including:

  • Credentials are used to configure authentication in the client libraries. SeeAuthentication Components for more details on authentication.
  • Options are used to override the client library default configuration. SeeClient Library Configuration for more details on library configuration.
  • Status error codes and details from an operation.
  • StatusOr returns a value on success and aStatus on error.
  • future andpromise futures (a holder that will receive a value asynchronously) and promises (the counterpart of a future, where values are stored asynchronously). They satisfy the API forstd::future andstd::promise, and add support for callbacks and cancellation.
Warning:Some namespaces are reserved for implementation details and are subject to change without notice. Do not use any symbols in these namespaces as your application may break when trying to use future versions of the library.These namespaces include:- Any namespace withinternal in its name, includinggoogle::cloud::internal andgoogle::cloud::rest_internal.- Any namespace withtesting in its name, includinggoogle::cloud::testing_util.

More information

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Last updated 2026-02-05 UTC.