| /* |
| * |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| * |
| */ |
| |
| #include "options.hpp" |
| |
| #include <proton/container.hpp> |
| #include <proton/connection.hpp> |
| #include <proton/message.hpp> |
| #include <proton/messaging_handler.hpp> |
| #include <proton/sender.hpp> |
| #include <proton/tracker.hpp> |
| #include <proton/work_queue.hpp> |
| |
| #include <iostream> |
| |
| #include "fake_cpp11.hpp" |
| |
| // Send messages at a constant rate one per interval. cancel after a timeout. |
| class scheduled_sender : public proton::messaging_handler { |
| private: |
| std::string url; |
| proton::sender sender; |
| proton::duration interval, timeout; |
| proton::work_queue* work_queue; |
| bool ready, canceled; |
| |
| public: |
| |
| scheduled_sender(const std::string &s, double d, double t) : |
| url(s), |
| interval(int(d*proton::duration::SECOND.milliseconds())), // Send interval. |
| timeout(int(t*proton::duration::SECOND.milliseconds())), // Cancel after timeout. |
| work_queue(0), |
| ready(true), // Ready to send. |
| canceled(false) // Canceled. |
| {} |
| |
| // The awkward looking double lambda is necessary because the scheduled lambdas run in the container context |
| // and must arrange lambdas for send and close to happen in the connection context. |
| void on_container_start(proton::container &c) OVERRIDE { |
| c.open_sender(url); |
| } |
| |
| void on_sender_open(proton::sender &s) OVERRIDE { |
| sender = s; |
| work_queue = &s.work_queue(); |
| // Call this->cancel after timeout. |
| s.container().schedule(timeout, [this]() { this->work_queue->add( [this]() { this->cancel(); }); }); |
| // Start regular ticks every interval. |
| s.container().schedule(interval, [this]() { this->work_queue->add( [this]() { this->tick(); }); }); |
| } |
| |
| void cancel() { |
| canceled = true; |
| sender.connection().close(); |
| } |
| |
| void tick() { |
| // Schedule the next tick unless we have been cancelled. |
| if (!canceled) |
| sender.container().schedule(interval, [this]() { this->work_queue->add( [this]() { this->tick(); }); }); |
| if (sender.credit() > 0) // Only send if we have credit |
| send(); |
| else |
| ready = true; // Set the ready flag, send as soon as we get credit. |
| } |
| |
| void on_sendable(proton::sender &) OVERRIDE { |
| if (ready) // We have been ticked since the last send. |
| send(); |
| } |
| |
| void send() { |
| std::cout << "send" << std::endl; |
| sender.send(proton::message("ping")); |
| ready = false; |
| } |
| }; |
| |
| |
| int main(int argc, char **argv) { |
| std::string address("127.0.0.1:5672/examples"); |
| double interval = 1.0; |
| double timeout = 5.0; |
| |
| example::options opts(argc, argv); |
| |
| opts.add_value(address, 'a', "address", "connect and send to URL", "URL"); |
| opts.add_value(interval, 'i', "interval", "send a message every INTERVAL seconds", "INTERVAL"); |
| opts.add_value(timeout, 't', "timeout", "stop after T seconds", "T"); |
| |
| try { |
| opts.parse(); |
| scheduled_sender h(address, interval, timeout); |
| proton::container(h).run(); |
| return 0; |
| } catch (const example::bad_option& e) { |
| std::cout << opts << std::endl << e.what() << std::endl; |
| } catch (const std::exception& e) { |
| std::cerr << e.what() << std::endl; |
| } |
| |
| return 1; |
| } |