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/*
*
* Copyright 2015, Google Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following disclaimer
* in the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Google Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*/
#include <grpc++/client_context.h>
#include "examples/pubsub/subscriber.h"
using tech::pubsub::Topic;
using tech::pubsub::DeleteTopicRequest;
using tech::pubsub::GetTopicRequest;
using tech::pubsub::SubscriberService;
using tech::pubsub::ListTopicsRequest;
using tech::pubsub::ListTopicsResponse;
using tech::pubsub::PublishRequest;
using tech::pubsub::PubsubMessage;
namespace grpc {
namespace examples {
namespace pubsub {
Subscriber::Subscriber(std::shared_ptr<Channel> channel)
: stub_(SubscriberService::NewStub(channel)) {}
void Subscriber::Shutdown() { stub_.reset(); }
Status Subscriber::CreateSubscription(const grpc::string& topic,
const grpc::string& name) {
tech::pubsub::Subscription request;
tech::pubsub::Subscription response;
ClientContext context;
request.set_topic(topic);
request.set_name(name);
return stub_->CreateSubscription(&context, request, &response);
}
Status Subscriber::GetSubscription(const grpc::string& name,
grpc::string* topic) {
tech::pubsub::GetSubscriptionRequest request;
tech::pubsub::Subscription response;
ClientContext context;
request.set_subscription(name);
Status s = stub_->GetSubscription(&context, request, &response);
*topic = response.topic();
return s;
}
Status Subscriber::DeleteSubscription(const grpc::string& name) {
tech::pubsub::DeleteSubscriptionRequest request;
proto2::Empty response;
ClientContext context;
request.set_subscription(name);
return stub_->DeleteSubscription(&context, request, &response);
}
Status Subscriber::Pull(const grpc::string& name, grpc::string* data) {
tech::pubsub::PullRequest request;
tech::pubsub::PullResponse response;
ClientContext context;
request.set_subscription(name);
Status s = stub_->Pull(&context, request, &response);
if (s.IsOk()) {
tech::pubsub::PubsubEvent event = response.pubsub_event();
if (event.has_message()) {
*data = event.message().data();
}
tech::pubsub::AcknowledgeRequest ack;
proto2::Empty empty;
ClientContext ack_context;
ack.set_subscription(name);
ack.add_ack_id(response.ack_id());
stub_->Acknowledge(&ack_context, ack, &empty);
}
return s;
}
} // namespace pubsub
} // namespace examples
} // namespace grpc
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