1/* 2 * Copyright (c) 2003, 2015, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 24// JDK 25import java.util.Vector; 26 27// JMX 28import javax.management.NotificationListener; 29import javax.management.Notification; 30 31public class SimpleListener implements NotificationListener { 32 private boolean received = false; 33 private String type = null; 34 private Object handback = null; 35 private Vector<Object> handbacks = new Vector<Object>(); 36 private int nbrec = 0; 37 38 public synchronized void handleNotification(Notification notification, 39 Object handback) { 40 Utils.debug(Utils.DEBUG_STANDARD, 41 "SimpleListener::handleNotification :" + notification); 42 try { 43 received = true; 44 type = notification.getType(); 45 this.handback = handback; 46 handbacks.add(handback); 47 nbrec++; 48 notify(); 49 } catch(Exception e) { 50 System.out.println("(ERROR) SimpleListener::handleNotification :" 51 + " Caught exception " 52 + e) ; 53 } 54 } 55 56 public synchronized boolean isNotificationReceived() { 57 boolean ret = received; 58 reset(); 59 return ret; 60 } 61 62 public synchronized Object[] waitForMultiNotifications(int nb) { 63 while(true) { 64 if(nbrec < nb) { 65 Utils.debug(Utils.DEBUG_STANDARD, 66 "SimpleListener::waitForMultiNotifications wait"); 67 try { 68 wait(); 69 } catch(InterruptedException ie) { 70 // OK : we wait for being interrupted 71 } 72 Utils.debug(Utils.DEBUG_STANDARD, 73 "SimpleListener::waitForMultiNotifications wait over"); 74 } 75 else 76 break; 77 } 78 Object[] ret = handbacks.toArray(); 79 reset(); 80 return ret; 81 } 82 83 private void reset() { 84 received = false; 85 handback = null; 86 handbacks.removeAllElements(); 87 type = null; 88 } 89 90 public synchronized Object waitForNotificationHB() { 91 while(true) { 92 if(!received) { 93 Utils.debug(Utils.DEBUG_STANDARD, 94 "SimpleListener::waitForNotificationHB wait"); 95 try { 96 wait(); 97 } catch(InterruptedException ie) { 98 // OK : we wait for being interrupted 99 } 100 Utils.debug(Utils.DEBUG_STANDARD, 101 "SimpleListener::waitForNotificationHB received"); 102 } 103 else 104 break; 105 } 106 Object ret = handback; 107 reset(); 108 return ret; 109 } 110 111 public synchronized String waitForNotification() { 112 while(true) { 113 if(!received) { 114 Utils.debug(Utils.DEBUG_STANDARD, 115 "SimpleListener::waitForNotification wait"); 116 try { 117 wait(); 118 } catch(InterruptedException ie) { 119 // OK : we wait for being interrupted 120 } 121 Utils.debug(Utils.DEBUG_STANDARD, 122 "SimpleListener::waitForNotification received"); 123 } 124 else 125 break; 126 } 127 String ret = type; 128 reset(); 129 return ret; 130 } 131} 132