/*
*
* 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.
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*/
package org.apache.airavata.wsmg.samples.wse;
import java.util.Properties;
import java.util.UUID;
import java.util.concurrent.TimeUnit;
import org.apache.axiom.om.OMAbstractFactory;
import org.apache.axiom.om.OMElement;
import org.apache.axiom.om.OMFactory;
import org.apache.airavata.wsmg.client.MsgBrokerClientException;
import org.apache.airavata.wsmg.client.WseMsgBrokerClient;
import org.apache.airavata.wsmg.samples.util.ConfigKeys;
public class Producer extends Thread {
private Properties configurations;
public Producer(String producerId, Properties config) {
super(producerId);
configurations = config;
}
private OMElement createMsg(int seq, String src, String uuid) {
// "<msg><seq>%d</seq><src>%s</src><uuid>%s</uuid></msg>"
OMFactory factory = OMAbstractFactory.getOMFactory();
OMElement omMsg = factory.createOMElement("msg", null);
OMElement omSeq = factory.createOMElement("seq", null, omMsg);
omSeq.setText("" + seq);
OMElement omSrc = factory.createOMElement("src", null, omMsg);
omSrc.setText(src);
OMElement omUUID = factory.createOMElement("uuid", null, omMsg);
omUUID.setText(uuid);
return omMsg;
}
public void run() {
System.out.println(String
.format("producer [%s] starting...", getName()));
String brokerLocation = configurations
.getProperty(ConfigKeys.BROKER_EVENTING_SERVICE_EPR);
String topicExpression = configurations
.getProperty(ConfigKeys.TOPIC_SIMPLE);
int timeInterval = Integer.parseInt(configurations
.getProperty(ConfigKeys.PUBLISH_TIME_INTERVAL));
WseMsgBrokerClient client = new WseMsgBrokerClient();
client.init(brokerLocation);
try {
int count = 0;
while (true) {
UUID uuid = UUID.randomUUID();
count++;
OMElement omMsg = createMsg(count, getName(), uuid.toString());
System.out.println(String.format(
"producer [%s] sending msg: %s", getName(), omMsg
.toString()));
client.publish(topicExpression, omMsg);
TimeUnit.SECONDS.sleep(timeInterval);
}
} catch (InterruptedException e) {
e.printStackTrace();
System.out.println("interruped");
} catch (MsgBrokerClientException f) {
f.printStackTrace();
System.out
.println("unable to publish messages - producer will stop.");
}
}
}