Cloud Functions API C++ Client Library

An idiomatic C++ client library for the Cloud Functions API, a lightweight compute solution for developers to create single-purpose, stand-alone functions that respond to Cloud events without the need to manage a server or runtime environment.

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/functions/quickstart/ directory, which should give you a taste of the Cloud Functions API C++ client library API.

#include "google/cloud/functions/v2/function_client.h"
#include "google/cloud/location.h"
#include <iostream>

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

 
auto const location = google::cloud::Location(argv[1], "-");

 
namespace functions = ::google::cloud::functions_v2;
 
auto client = functions::FunctionServiceClient(
      functions
::MakeFunctionServiceConnection());

 
for (auto f : client.ListFunctions(location.FullName())) {
   
if (!f) throw std::move(f).status();
    std
::cout << f->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 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.

More Information