1 /*** 2 * 3 * Copyright 2004 Protique Ltd 4 * 5 * Licensed under the Apache License, Version 2.0 (the "License"); 6 * you may not use this file except in compliance with the License. 7 * You may obtain a copy of the License at 8 * 9 * http://www.apache.org/licenses/LICENSE-2.0 10 * 11 * Unless required by applicable law or agreed to in writing, software 12 * distributed under the License is distributed on an "AS IS" BASIS, 13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14 * See the License for the specific language governing permissions and 15 * limitations under the License. 16 * 17 **/ 18 package org.codehaus.activecluster.impl; 19 20 import org.apache.commons.logging.Log; 21 import org.apache.commons.logging.LogFactory; 22 import org.codehaus.activecluster.Node; 23 24 import javax.jms.JMSException; 25 import javax.jms.Message; 26 import javax.jms.MessageProducer; 27 import javax.jms.Session; 28 29 30 /*** 31 * A local stub for the state service which sends JMS messages 32 * to the cluster 33 * 34 * @version $Revision: 1.5 $ 35 */ 36 public class StateServiceStub implements StateService { 37 38 private final Log log = LogFactory.getLog(getClass()); 39 40 private Session session; 41 private MessageProducer producer; 42 43 public StateServiceStub(Session session, MessageProducer producer) { 44 this.session = session; 45 this.producer = producer; 46 } 47 48 public void keepAlive(Node node) { 49 try { 50 if (log.isDebugEnabled()) { 51 log.debug("Sending cluster data message: " + node); 52 } 53 54 Message message = session.createObjectMessage(new NodeImpl(node)); 55 producer.send(message); 56 } 57 catch (JMSException e) { 58 log.error("Could not send JMS message: " + e, e); 59 } 60 } 61 62 public void shutdown(Node node) { 63 try { 64 if (log.isDebugEnabled()) { 65 log.debug("Sending shutdown message: " + node); 66 } 67 68 Message message = session.createObjectMessage(new NodeImpl(node)); 69 message.setJMSType("shutdown"); 70 producer.send(message); 71 } 72 catch (JMSException e) { 73 log.error("Could not send JMS message: " + e, e); 74 } 75 } 76 }