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C++ Client Libraries | Google Cloud

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An idiomatic C++ client library for the Dataproc Metastore API, a service to manage the lifecycle and configuration of metastore services.

While this library is GA, please note that the Google Cloud C++ client libraries do not follow Semantic Versioning.

The following shows the code that you'll run in the google/cloud/metastore/quickstart/ directory, which should give you a taste of the Dataproc Metastore API C++ client library API.

#include "google/cloud/metastore/v1/dataproc_metastore_client.h"
#include <iostream>

int main(int argc, char* argv[]) try {
  if (argc != 2) {
    std::cerr << "Usage: " << argv[0] << " project-id\n";
    return 1;
  }

  namespace metastore = ::google::cloud::metastore_v1;
  auto client = metastore::DataprocMetastoreClient(
      metastore::MakeDataprocMetastoreConnection());

  // Use the `-` wildcard to search in all locations.
  auto const parent = std::string{"projects/"} + argv[1] + "/locations/-";
  for (auto r : client.ListServices(parent)) {
    if (!r) throw std::move(r).status();
    std::cout << r->DebugString() << "\n";
  }

  return 0;
} catch (google::cloud::Status const& status) {
  std::cerr << "google::cloud::Status thrown: " << status << "\n";
  return 1;
}

This library offers multiple *Client classes, which are listed below. Each one of these classes exposes all the RPCs for a gRPC service as member functions of the class. This library groups multiple gRPC services because they are part of the same product or are often used together. A typical example may be the administrative and data plane operations for a single product.

The library also has other classes that provide helpers, configuration parameters, and infrastructure to mock the *Client classes when testing your application.

• metastore_v1::DataprocMetastoreClient
• metastore_v1::DataprocMetastoreFederationClient

• Error Handling - describes how the library reports errors.
• How to Override the Default Endpoint - describes how to override the default endpoint.
• How to Override the Authentication Credentials - describes how to change the authentication credentials used by the library.
• Override Retry, Backoff, and Idempotency Policies - describes how to change the default retry policies.
• Environment Variables - describes environment variables that can configure the behavior of 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."],[[["This webpage provides documentation for the Dataproc Metastore API C++ Client Library, which is a Google Cloud service for managing metastore services."],["The latest release candidate version for the C++ client library is 2.37.0-rc, and many previous versions such as 2.36.0 down to 2.13.0 are accessible via provided links."],["The library offers `*Client` classes, like `metastore_v1::DataprocMetastoreClient` and `metastore_v1::DataprocMetastoreFederationClient`, which expose RPCs for gRPC services."],["The library, while GA, does not follow semantic versioning and includes instructions on error handling, overriding default settings, and utilizing environment variables."]]],[]]

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