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/*-
* ============LICENSE_START=======================================================
* Copyright (C) 2016-2018 Ericsson. All rights reserved.
* ================================================================================
* Licensed 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.
*
* SPDX-License-Identifier: Apache-2.0
* ============LICENSE_END=========================================================
*/
package org.onap.policy.apex.apps.uservice.test.adapt.jms;
import javax.jms.Connection;
import javax.jms.ConnectionFactory;
import javax.jms.JMSException;
import javax.jms.Message;
import javax.jms.MessageProducer;
import javax.jms.Session;
import javax.jms.Topic;
import org.apache.activemq.command.ActiveMQTopic;
import org.onap.policy.apex.apps.uservice.test.adapt.events.EventGenerator;
import org.onap.policy.apex.core.infrastructure.threading.ThreadUtilities;
import org.onap.policy.apex.service.engine.event.ApexEventRuntimeException;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* @author Liam Fallon (liam.fallon@ericsson.com)
*/
public class JMSEventProducer implements Runnable {
private static final Logger LOGGER = LoggerFactory.getLogger(JMSEventProducer.class);
private final String topic;
private final int eventCount;
private final boolean sendObjects;
private final long eventInterval;
private long eventsSentCount = 0;
private final Thread producerThread;
private boolean sendEventsFlag = false;
private boolean stopFlag = false;
private final Connection connection;
public JMSEventProducer(final String topic, final ConnectionFactory connectionFactory, final String username,
final String password, final int eventCount, final boolean sendObjects, final long eventInterval)
throws JMSException {
this.topic = topic;
this.eventCount = eventCount;
this.sendObjects = sendObjects;
this.eventInterval = eventInterval;
connection = connectionFactory.createConnection(username, password);
connection.start();
producerThread = new Thread(this);
producerThread.start();
}
@Override
public void run() {
final Topic jmsTopic = new ActiveMQTopic(topic);
try (final Session jmsSession = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);
final MessageProducer jmsProducer = jmsSession.createProducer(jmsTopic);) {
while (producerThread.isAlive() && !stopFlag) {
ThreadUtilities.sleep(50);
if (sendEventsFlag) {
sendEventsToTopic(jmsSession, jmsProducer);
sendEventsFlag = false;
}
}
} catch (final Exception e) {
throw new ApexEventRuntimeException("JMS event consumption failed", e);
}
}
public void sendEvents() {
sendEventsFlag = true;
}
private void sendEventsToTopic(final Session jmsSession, final MessageProducer jmsProducer) throws JMSException {
LOGGER.info("{} : sending events to JMS server, event count {}", this.getClass().getCanonicalName(),
eventCount);
for (int i = 0; i < eventCount; i++) {
ThreadUtilities.sleep(eventInterval);
Message jmsMessage = null;
if (sendObjects) {
jmsMessage = jmsSession.createObjectMessage(new TestPing());
} else {
jmsMessage = jmsSession.createTextMessage(EventGenerator.jsonEvent());
}
jmsProducer.send(jmsMessage);
eventsSentCount++;
}
LOGGER.info("{} : completed, number of events sent", this.getClass().getCanonicalName(), eventsSentCount);
}
public long getEventsSentCount() {
return eventsSentCount;
}
public void shutdown() {
LOGGER.info("{} : stopping", this.getClass().getCanonicalName());
stopFlag = true;
while (producerThread.isAlive()) {
ThreadUtilities.sleep(10);
}
LOGGER.info("{} : stopped", this.getClass().getCanonicalName());
}
}
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