| /* |
| * |
| * 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. |
| * |
| */ |
| package org.apache.qpid.flow; |
| |
| import org.apache.qpid.client.AMQConnection; |
| import org.apache.qpid.client.AMQDestination; |
| import org.apache.qpid.client.AMQQueue; |
| import org.apache.qpid.client.AMQSession; |
| import org.apache.qpid.exchange.ExchangeDefaults; |
| import org.apache.qpid.framing.AMQShortString; |
| |
| import javax.jms.Message; |
| import javax.jms.MessageListener; |
| import javax.jms.MessageProducer; |
| |
| public class ChannelFlowTest implements MessageListener |
| { |
| private int sent; |
| private int received; |
| |
| ChannelFlowTest(String broker) throws Exception |
| { |
| this(new AMQConnection(broker, "guest", "guest", randomize("Client"), "/test")); |
| } |
| |
| ChannelFlowTest(AMQConnection connection) throws Exception |
| { |
| this(connection, new AMQQueue(connection.getDefaultQueueExchangeName(), new AMQShortString(randomize("ChannelFlowTest")), true)); |
| } |
| |
| ChannelFlowTest(AMQConnection connection, AMQDestination destination) throws Exception |
| { |
| AMQSession session = (AMQSession) connection.createSession(false, AMQSession.NO_ACKNOWLEDGE, 50,25); |
| |
| //set up a slow consumer |
| session.createConsumer(destination).setMessageListener(this); |
| connection.start(); |
| |
| //create a publisher |
| MessageProducer producer = session.createProducer(destination); |
| Message msg = session.createTextMessage("Message"); |
| |
| //publish in bursts that are fast enough to cause channel flow control |
| for(int i = 0; i < 10; i++) |
| { |
| for(int j = 0; j < 100; j++) |
| { |
| producer.send(msg); |
| sent++; |
| } |
| waitUntilReceived(sent - 40); |
| } |
| |
| waitUntilReceived(sent); |
| |
| session.close(); |
| connection.close(); |
| } |
| |
| |
| private synchronized void waitUntilReceived(int count) throws InterruptedException |
| { |
| while(received <count) |
| { |
| wait(); |
| } |
| } |
| |
| public synchronized void onMessage(Message message) |
| { |
| try |
| { |
| Thread.sleep(50); |
| |
| received++; |
| notify(); |
| } |
| catch (InterruptedException e) |
| { |
| e.printStackTrace(); |
| } |
| } |
| |
| private static String randomize(String in) |
| { |
| return in + System.currentTimeMillis(); |
| } |
| |
| public static void main(String[] argv) throws Exception |
| { |
| new ChannelFlowTest(argv.length == 0 ? "localhost:5672" : argv[0]); |
| } |
| |
| } |