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/**
* Copyright 2017 ZTE Corporation.
*
* 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.
*/
package org.onap.holmes.engine.mqconsumer;
import java.io.Serializable;
import javax.inject.Inject;
import javax.jms.Connection;
import javax.jms.ConnectionFactory;
import javax.jms.Destination;
import javax.jms.JMSException;
import javax.jms.Message;
import javax.jms.MessageConsumer;
import javax.jms.MessageListener;
import javax.jms.Session;
import lombok.NoArgsConstructor;
import lombok.extern.slf4j.Slf4j;
import org.apache.activemq.ActiveMQConnectionFactory;
import org.apache.activemq.command.ActiveMQObjectMessage;
import org.glassfish.hk2.api.IterableProvider;
import org.jvnet.hk2.annotations.Service;
import org.onap.holmes.common.api.stat.VesAlarm;
import org.onap.holmes.common.config.MQConfig;
import org.onap.holmes.common.constant.AlarmConst;
import org.onap.holmes.engine.manager.DroolsEngine;
@Service
@Slf4j
@NoArgsConstructor
public class MQConsumer {
@Inject
private IterableProvider<MQConfig> mqConfigProvider;
private ConnectionFactory connectionFactory;
private ConnectionFactory connectionFactory1;
@Inject
private DroolsEngine engine;
public void registerAlarmTopicListener() {
String brokerURL =
"tcp://" + mqConfigProvider.get().getBrokerIp() + ":" + mqConfigProvider.get().getBrokerPort();
connectionFactory = new ActiveMQConnectionFactory(mqConfigProvider.get().getBrokerUsername(),
mqConfigProvider.get().getBrokerPassword(), brokerURL);
AlarmMqMessageListener listener = new AlarmMqMessageListener();
listener.receive();
}
class AlarmMqMessageListener implements MessageListener {
private Connection connection = null;
private Session session = null;
private Destination destination = null;
private MessageConsumer consumer = null;
private void initialize() throws JMSException {
connection = connectionFactory.createConnection();
session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);
destination = session.createTopic(AlarmConst.MQ_TOPIC_NAME_ALARM);
consumer = session.createConsumer(destination);
connection.start();
}
public void receive() {
try {
initialize();
consumer.setMessageListener(this);
} catch (JMSException e) {
log.error("Failed to connect to the MQ service : " + e.getMessage(), e);
try {
close();
} catch (JMSException e1) {
log.error("Failed close connection " + e1.getMessage(), e1);
}
}
}
public void onMessage(Message arg0) {
ActiveMQObjectMessage objectMessage = (ActiveMQObjectMessage) arg0;
try {
Serializable object = objectMessage.getObject();
if (object instanceof VesAlarm) {
VesAlarm vesAlarm = (VesAlarm) object;
engine.putRaisedIntoStream(vesAlarm);
}
} catch (JMSException e) {
log.error("Failed get object : " + e.getMessage(), e);
}
}
private void close() throws JMSException {
if (consumer != null) {
consumer.close();
}
if (session != null) {
session.close();
}
if (connection != null) {
connection.close();
}
}
}
}
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