| /* |
| * |
| * 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.testkit; |
| |
| |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| import javax.jms.Connection; |
| import javax.jms.Message; |
| import javax.jms.MessageConsumer; |
| import javax.jms.MessageListener; |
| import javax.jms.MessageProducer; |
| import javax.jms.TextMessage; |
| |
| import org.apache.qpid.client.AMQAnyDestination; |
| import org.apache.qpid.client.AMQConnection; |
| |
| /** |
| * A generic receiver which consumes messages |
| * from a given address in a broker (host/port) |
| * until told to stop by killing it. |
| * |
| * It participates in a feedback loop to ensure the producer |
| * doesn't fill up the queue. If it receives an "End" msg |
| * it sends a reply to the replyTo address in that msg. |
| * |
| * It doesn't check for correctness or measure anything |
| * leaving those concerns to another entity. |
| * However it prints a timestamp every x secs(-Dreport_frequency) |
| * as checkpoint to figure out how far the test has progressed if |
| * a failure occurred. |
| * |
| * It also takes in an optional Error handler to |
| * pass out any error in addition to writing them to std err. |
| * |
| * This is intended more as building block to create |
| * more complex test cases. However there is a main method |
| * provided to use this standalone. |
| * |
| * The following options are available and configurable |
| * via jvm args. |
| * |
| * sync_rcv - Whether to consume sync (instead of using a listener). |
| * report_frequency - how often a timestamp is printed |
| * durable |
| * transacted |
| * tx_size - size of transaction batch in # msgs. * |
| * check_for_dups - check for duplicate messages and out of order messages. |
| * jms_durable_sub - create a durable subscription instead of a regular subscription. |
| */ |
| public class Receiver extends Client implements MessageListener |
| { |
| private long msg_count = 0; |
| private int sequence = 0; |
| private boolean syncRcv = Boolean.getBoolean("sync_rcv"); |
| private boolean jmsDurableSub = Boolean.getBoolean("jms_durable_sub"); |
| private boolean checkForDups = Boolean.getBoolean("check_for_dups"); |
| private MessageConsumer consumer; |
| private List<Integer> duplicateMessages = new ArrayList<Integer>(); |
| |
| public Receiver(Connection con,String addr) throws Exception |
| { |
| super(con); |
| setSsn(con.createSession(isTransacted(), getAck_mode())); |
| consumer = getSsn().createConsumer(new AMQAnyDestination(addr)); |
| if (!syncRcv) |
| { |
| consumer.setMessageListener(this); |
| } |
| |
| System.out.println("Receiving messages from : " + addr); |
| } |
| |
| public void onMessage(Message msg) |
| { |
| handleMessage(msg); |
| } |
| |
| public void run() throws Exception |
| { |
| long sleepTime = getReportFrequency(); |
| while(true) |
| { |
| if(syncRcv) |
| { |
| long t = sleepTime; |
| while (t > 0) |
| { |
| long start = System.currentTimeMillis(); |
| Message msg = consumer.receive(t); |
| t = t - (System.currentTimeMillis() - start); |
| handleMessage(msg); |
| } |
| } |
| Thread.sleep(sleepTime); |
| System.out.println(getDf().format(System.currentTimeMillis()) |
| + " - messages received : " + msg_count); |
| } |
| } |
| |
| private void handleMessage(Message m) |
| { |
| if (m == null) { return; } |
| |
| try |
| { |
| if (m instanceof TextMessage && ((TextMessage) m).getText().equals("End")) |
| { |
| MessageProducer temp = getSsn().createProducer(m.getJMSReplyTo()); |
| Message controlMsg = getSsn().createTextMessage(); |
| temp.send(controlMsg); |
| if (isTransacted()) |
| { |
| getSsn().commit(); |
| } |
| temp.close(); |
| } |
| else |
| { |
| |
| int seq = m.getIntProperty("sequence"); |
| if (checkForDups) |
| { |
| if (seq == 0) |
| { |
| sequence = 0; // wrap around for each iteration |
| System.out.println("Received " + duplicateMessages.size() + " duplicate messages during the iteration"); |
| duplicateMessages.clear(); |
| } |
| |
| if (seq < sequence) |
| { |
| duplicateMessages.add(seq); |
| } |
| else if (seq == sequence) |
| { |
| sequence++; |
| msg_count ++; |
| } |
| else |
| { |
| // Multiple publishers are not allowed in this test case. |
| // So out of order messages are not allowed. |
| throw new Exception(": Received an out of order message (expected=" |
| + sequence + ",received=" + seq + ")" ); |
| } |
| } |
| else |
| { |
| msg_count ++; |
| } |
| |
| // Please note that this test case doesn't expect duplicates |
| // When testing for transactions. |
| if (isTransacted() && msg_count % getTxSize() == 0) |
| { |
| getSsn().commit(); |
| } |
| } |
| } |
| catch (Exception e) |
| { |
| e.printStackTrace(); |
| handleError("Exception receiving messages",e); |
| } |
| } |
| |
| // Receiver host port address |
| public static void main(String[] args) throws Exception |
| { |
| String host = "127.0.0.1"; |
| int port = 5672; |
| String addr = "message_queue"; |
| |
| if (args.length > 0) |
| { |
| host = args[0]; |
| } |
| if (args.length > 1) |
| { |
| port = Integer.parseInt(args[1]); |
| } |
| if (args.length > 2) |
| { |
| addr = args[2]; |
| } |
| |
| AMQConnection con = new AMQConnection( |
| "amqp://username:password@topicClientid/test?brokerlist='tcp://" |
| + host + ":" + port + "'"); |
| |
| Receiver rcv = new Receiver(con,addr); |
| rcv.run(); |
| } |
| |
| } |