Document AI Warehouse API C++ Client Library
An idiomatic C++ client library for the Document AI Warehouse API, an integrated, cloud-based platform to store, search, organize, govern and analyze documents and their structured metadata.
While this library is GA, please note that the Google Cloud C++ client libraries do not follow Semantic Versioning.
Quickstart
The following shows the code that you'll run in the google/cloud/contentwarehouse/quickstart/
directory, which should give you a taste of the Document AI Warehouse API C++ client library API.
#include "google/cloud/contentwarehouse/v1/document_client.h"
#include <iostream>
int main(int argc, char* argv[]) try {
if (argc != 3) {
std::cerr << "Usage: " << argv[0] << " project-number location-id\n";
return 1;
}
namespace contentwarehouse = ::google::cloud::contentwarehouse_v1;
auto client = contentwarehouse::DocumentServiceClient(
contentwarehouse::MakeDocumentServiceConnection());
auto const parent =
std::string{"projects/"} + argv[1] + "/locations/" + argv[2];
for (auto r : client.SearchDocuments(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;
}
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.
contentwarehouse_v1::DocumentServiceClient
contentwarehouse_v1::DocumentLinkServiceClient
contentwarehouse_v1::DocumentSchemaServiceClient
contentwarehouse_v1::RuleSetServiceClient
contentwarehouse_v1::SynonymSetServiceClient
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.