| /* |
| * |
| * Copyright 2014, 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/tips/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 tips { |
| |
| Subscriber::Subscriber(std::shared_ptr<ChannelInterface> channel) |
| : stub_(SubscriberService::NewStub(channel)) { |
| } |
| |
| void Subscriber::Shutdown() { |
| stub_.reset(); |
| } |
| |
| Status Subscriber::CreateSubscription(const string& topic, const 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 string& name, 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 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 string& name, 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 tips |
| } // namespace examples |
| } // namespace grpc |