001    /**
002     * Licensed to the Apache Software Foundation (ASF) under one
003     * or more contributor license agreements.  See the NOTICE file
004     * distributed with this work for additional information
005     * regarding copyright ownership.  The ASF licenses this file
006     * to you under the Apache License, Version 2.0 (the
007     * "License"); you may not use this file except in compliance
008     * with the License.  You may obtain a copy of the License at
009     *
010     *      http://www.apache.org/licenses/LICENSE-2.0
011     *
012     * Unless required by applicable law or agreed to in writing, software
013     * distributed under the License is distributed on an "AS IS" BASIS,
014     * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
015     * See the License for the specific language governing permissions and
016     * limitations under the License.
017     */
018    package org.apache.oozie.jms;
019    
020    import javax.jms.DeliveryMode;
021    import javax.jms.JMSException;
022    import javax.jms.MessageProducer;
023    import javax.jms.Session;
024    import javax.jms.TextMessage;
025    
026    import org.apache.hadoop.conf.Configuration;
027    import org.apache.oozie.sla.listener.SLAEventListener;
028    import org.apache.oozie.client.event.jms.JMSHeaderConstants;
029    import org.apache.oozie.client.event.message.SLAMessage;
030    import org.apache.oozie.client.event.SLAEvent;
031    import org.apache.oozie.event.messaging.MessageFactory;
032    import org.apache.oozie.event.messaging.MessageSerializer;
033    import org.apache.oozie.service.JMSAccessorService;
034    import org.apache.oozie.service.JMSTopicService;
035    import org.apache.oozie.service.Services;
036    import org.apache.oozie.util.XLog;
037    
038    public class JMSSLAEventListener extends SLAEventListener {
039    
040        private JMSAccessorService jmsService = Services.get().get(JMSAccessorService.class);
041        private JMSTopicService jmsTopicService = Services.get().get(JMSTopicService.class);
042        private JMSConnectionInfo connInfo;
043        private int jmsSessionOpts;
044        private int jmsDeliveryMode;
045        private int jmsExpirationDate;
046        private ConnectionContext jmsContext;
047        private static XLog LOG;
048    
049        @Override
050        public void init(Configuration conf) throws Exception {
051            String jmsProps = conf.get(JMSJobEventListener.JMS_CONNECTION_PROPERTIES);
052            connInfo = new JMSConnectionInfo(jmsProps);
053            LOG = XLog.getLog(getClass());
054            jmsSessionOpts = conf.getInt(JMSJobEventListener.JMS_SESSION_OPTS, Session.AUTO_ACKNOWLEDGE);
055            jmsDeliveryMode = conf.getInt(JMSJobEventListener.JMS_DELIVERY_MODE, DeliveryMode.PERSISTENT);
056            jmsExpirationDate = conf.getInt(JMSJobEventListener.JMS_EXPIRATION_DATE, 0);
057        }
058    
059        @Override
060        public void onStartMiss(SLAEvent event) {
061            sendSLANotification(event);
062        }
063    
064        @Override
065        public void onEndMiss(SLAEvent event) {
066            sendSLANotification(event);
067        }
068    
069        @Override
070        public void onDurationMiss(SLAEvent event) {
071            sendSLANotification(event);
072        }
073    
074        @Override
075        public void onStartMet(SLAEvent event) {
076            sendSLANotification(event);
077        }
078    
079        @Override
080        public void onEndMet(SLAEvent event) {
081            sendSLANotification(event);
082        }
083    
084        @Override
085        public void onDurationMet(SLAEvent event) {
086            sendSLANotification(event);
087        }
088    
089        protected void sendSLANotification(SLAEvent event) {
090            SLAMessage slaMsg = MessageFactory.createSLAMessage(event);
091            MessageSerializer serializer = MessageFactory.getMessageSerializer();
092            String messageBody = serializer.getSerializedObject(slaMsg);
093            String serializerMessageFormat = serializer.getMessageFormat();
094            String topicName = getTopic(event);
095            sendJMSMessage(slaMsg, messageBody, topicName, serializerMessageFormat);
096        }
097    
098        protected void sendJMSMessage(SLAMessage slaMsg, String messageBody, String topicName,
099                String messageFormat) {
100            jmsContext = jmsService.createProducerConnectionContext(connInfo);
101            if (jmsContext != null) {
102                try {
103                    Session session = jmsContext.createThreadLocalSession(jmsSessionOpts);
104                    TextMessage textMessage = session.createTextMessage(messageBody);
105                    textMessage.setStringProperty(JMSHeaderConstants.EVENT_STATUS, slaMsg.getEventStatus().toString());
106                    textMessage.setStringProperty(JMSHeaderConstants.SLA_STATUS, slaMsg.getSLAStatus().toString());
107                    textMessage.setStringProperty(JMSHeaderConstants.APP_TYPE, slaMsg.getAppType().toString());
108                    textMessage.setStringProperty(JMSHeaderConstants.MESSAGE_TYPE, slaMsg.getMessageType().toString());
109                    textMessage.setStringProperty(JMSHeaderConstants.APP_NAME, slaMsg.getAppName());
110                    textMessage.setStringProperty(JMSHeaderConstants.USER, slaMsg.getUser());
111                    textMessage.setStringProperty(JMSHeaderConstants.MESSAGE_FORMAT, messageFormat);
112                    LOG.trace("Event related JMS text body [{0}]", textMessage.getText());
113                    LOG.trace("Event related JMS message [{0}]", textMessage.toString());
114                    MessageProducer producer = jmsContext.createProducer(session, topicName);
115                    producer.setDeliveryMode(jmsDeliveryMode);
116                    producer.setTimeToLive(jmsExpirationDate);
117                    producer.send(textMessage);
118                    producer.close();
119                }
120                catch (JMSException jmse) {
121                    LOG.error("Exception happened while sending event related jms message :" + messageBody, jmse);
122                }
123            }
124            else {
125                LOG.warn("No connection. Not sending message" + messageBody);
126            }
127        }
128    
129        public String getTopic(SLAEvent event) {
130            if (jmsTopicService != null) {
131                return jmsTopicService.getTopic(event.getAppType(), event.getUser(), event.getId(), event.getParentId());
132            }
133            else {
134                throw new RuntimeException("JMSTopicService is not initialized");
135            }
136        }
137    
138        @Override
139        public void destroy() {
140        }
141    }