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Showing content from https://cloud.google.com/cpp/docs/reference/servicecontrol/2.11.0 below:

C++ Client Libraries | Google Cloud

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Service Control API C++ Client Library

An idiomatic C++ client library for the Service Control API. This service provides admission control and telemetry reporting for services integrated with Service Infrastructure.

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

Quickstart

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

#include "google/cloud/servicecontrol/v1/service_controller_client.h"
#include "google/cloud/project.h"
#include <google/protobuf/util/time_util.h>
#include <iostream>

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

  namespace servicecontrol = ::google::cloud::servicecontrol_v1;
  auto client = servicecontrol::ServiceControllerClient(
      servicecontrol::MakeServiceControllerConnection());

  auto const project = google::cloud::Project(argv[1]);
  google::api::servicecontrol::v1::CheckRequest request;
  request.set_service_name("pubsub.googleapis.com");
  *request.mutable_operation() = [&] {
    using ::google::protobuf::util::TimeUtil;

    google::api::servicecontrol::v1::Operation op;
    op.set_operation_id("TODO-use-UUID-4-or-UUID-5");
    op.set_operation_name("google.pubsub.v1.Publisher.Publish");
    op.set_consumer_id(project.FullName());
    *op.mutable_start_time() = (TimeUtil::GetCurrentTime)();
    return op;
  }();

  auto response = client.Check(request);
  if (!response) throw std::move(response).status();
  std::cout << response->DebugString() << "\n";

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

Main classes

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.

Retry, Backoff, and Idempotency Policies.

The library automatically retries requests that fail with transient errors, and uses exponential backoff to backoff between retries. Application developers can override the default policies.

More Information

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.
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 details the C++ client library for the Service Control API, which is currently in General Availability (GA) and facilitates admission control and telemetry reporting for integrated services."],["The library offers multiple `*Client` classes, including `QuotaControllerClient`, `ServiceControllerClient` (v1), and `ServiceControllerClient` (v2), each exposing RPCs for corresponding gRPC services."],["The library automatically handles transient errors with retries and exponential backoff, with options for developers to customize these default policies."],["While listed as version 2.11.0, this library does not adhere to semantic versioning practices."],["The page includes a quick start guide, complete with code examples demonstrating the usage of the Service Control API C++ client library API."]]],[]]

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