This directory contains an idiomatic C++ client library for interacting with Google Cloud Storage (GCS), which is Google's Object Storage service. It allows world-wide storage and retrieval of any amount of data at any time. You can use Cloud Storage for a range of scenarios including serving website content, storing data for archival and disaster recovery, or distributing large data objects to users via direct download.
While this library is GA, please note that the Google Cloud C++ client libraries do not follow Semantic Versioning.
The quickstart/ directory contains a minimal environment to get started using this client library in a larger project. The following "Hello World" program is used in this quickstart, and should give you a taste of this library.
#include "google/cloud/storage/client.h"
#include <iostream>
#include <string>
int main(int argc, char* argv[]) {
if (argc != 2) {
std::cerr << "Missing bucket name.\n";
std::cerr << "Usage: quickstart <bucket-name>\n";
return 1;
}
std::string const bucket_name = argv[1];
// Create aliases to make the code easier to read.
namespace gcs = ::google::cloud::storage;
// Create a client to communicate with Google Cloud Storage. This client
// uses the default configuration for authentication and project id.
auto client = gcs::Client();
auto writer = client.WriteObject(bucket_name, "quickstart.txt");
writer << "Hello World!";
writer.Close();
if (!writer.metadata()) {
std::cerr << "Error creating object: " << writer.metadata().status()
<< "\n";
return 1;
}
std::cout << "Successfully created object: " << *writer.metadata() << "\n";
auto reader = client.ReadObject(bucket_name, "quickstart.txt");
if (!reader) {
std::cerr << "Error reading object: " << reader.status() << "\n";
return 1;
}
std::string contents{std::istreambuf_iterator<char>{reader}, {}};
std::cout << contents << "\n";
return 0;
}- Official documentation about Google Cloud Storage
- Reference doxygen documentation for each release of this client library
- Detailed header comments in our public
.hfiles