Cloud IAM C++ Client Library

The Cloud IAM C++ Client library offers types and functions to use Cloud IAM from C++ applications.

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


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

#include "google/cloud/iam/admin/v1/iam_client.h"
#include "google/cloud/project.h"
#include <iostream>

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

  // Create a namespace alias to make the code easier to read.
  namespace iam = ::google::cloud::iam_admin_v1;
  iam::IAMClient client(iam::MakeIAMConnection());
  auto const project = google::cloud::Project(argv[1]);
  std::cout << "Service Accounts for project: " << project.project_id() << "\n";
  int count = 0;
  for (auto sa : client.ListServiceAccounts(project.FullName())) {
    if (!sa) throw std::move(sa).status();
    std::cout << sa->name() << "\n";
  if (count == 0) std::cout << "No Service Accounts found.\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 service as member functions of the class. This library groups multiple 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.

Next Steps