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*
* 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
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package org.apache.airavata.wsmg.samples.wse;
import java.util.Properties;
import java.util.Random;
import java.util.UUID;
import java.util.concurrent.TimeUnit;
import org.apache.axiom.om.OMElement;
import org.apache.airavata.wsmg.client.MsgBrokerClientException;
import org.apache.airavata.wsmg.client.WsntMsgBrokerClient;
import org.apache.airavata.wsmg.samples.util.ConfigKeys;
public class Producer extends Thread {
private Properties configurations;
private String topicExpression;
private Random random;
public Producer(String producerId, String topic, Properties config) {
super(producerId);
configurations = config;
topicExpression = topic;
random = new Random();
}
public void run() {
System.out.println(String
.format("producer [%s] starting...", getName()));
String brokerLocation = configurations
.getProperty(ConfigKeys.BROKER_NOTIFICATIONS_SERVICE_EPR);
int timeIntervalUpperLimit = Integer.parseInt(configurations
.getProperty(ConfigKeys.PUBLISH_TIME_INTERVAL));
WsntMsgBrokerClient client = new WsntMsgBrokerClient();
client.init(brokerLocation);
try {
long count = 0;
while (true) {
UUID uuid = UUID.randomUUID();
count++;
OMElement omMsg = MsgUtil.createMsg(count, getName(), uuid
.toString());
//MsgUtil.print("seding msg", omMsg);
client.publish(topicExpression, omMsg);
TimeUnit.SECONDS
.sleep(getRandomSleepTime(timeIntervalUpperLimit));
}
} catch (InterruptedException e) {
e.printStackTrace();
System.out.println("interruped");
} catch (MsgBrokerClientException f) {
f.printStackTrace();
System.out.println("unable to publish messages - producer will stop.");
}
}
private int getRandomSleepTime(int upperLimit) {
int rnd = random.nextInt() % upperLimit;
return rnd < 2 ? 2 : rnd;
}
}