1 /*
2 * Portions Copyright 2000-2006 Sun Microsystems, Inc. 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. Sun designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Sun in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
22 * CA 95054 USA or visit www.sun.com if you need additional information or
23 * have any questions.
24 */
25 /*
26 * @author IBM Corp.
27 *
28 * Copyright IBM Corp. 1999-2000. All rights reserved.
29 */
30
31 package javax.management.modelmbean;
32
33 import javax.management.Attribute;
34 import javax.management.AttributeChangeNotification;
35 import javax.management.ListenerNotFoundException;
36 import javax.management.MBeanException;
37 import javax.management.Notification;
38 import javax.management.NotificationBroadcaster;
39 import javax.management.NotificationListener;
40 import javax.management.RuntimeOperationsException;
41
42 /**
43 * This interface must be implemented by the ModelMBeans. An implementation of this interface
44 * must be shipped with every JMX Agent.
45 * <P>
46 * Java resources wishing to be manageable instantiate the ModelMBean using the MBeanServer's
47 * createMBean method. The resource then sets the ModelMBeanInfo (with Descriptors) for the ModelMBean
48 * instance. The attributes and operations exposed via the ModelMBeanInfo for the ModelMBean are accessible
49 * from MBeans, connectors/adaptors like other MBeans. Through the ModelMBeanInfo Descriptors, values and methods in
50 * the managed application can be defined and mapped to attributes and operations of the ModelMBean.
51 * This mapping can be defined during development in an XML formatted file or dynamically and
52 * programmatically at runtime.
53 * <P>
54 * Every ModelMBean which is instantiated in the MBeanServer becomes manageable:
55 * its attributes and operations
56 * become remotely accessible through the connectors/adaptors connected to that MBeanServer.
57 * A Java object cannot be registered in the MBeanServer unless it is a JMX compliant MBean.
58 * By instantiating a ModelMBean, resources are guaranteed that the MBean is valid.
59 * <P>
60 * MBeanException and RuntimeOperationsException must be thrown on every public method. This allows
61 * for wrapping exceptions from distributed communications (RMI, EJB, etc.). These exceptions do
62 * not have to be thrown by the implementation except in the scenarios described in the specification
63 * and javadoc.
64 *
65 * @since 1.5
66 */
67
68 public interface ModelMBeanNotificationBroadcaster extends NotificationBroadcaster
69 {
70
71 /**
72 * Sends a Notification which is passed in to the registered
73 * Notification listeners on the ModelMBean as a
74 * jmx.modelmbean.generic notification.
75 *
76 * @param ntfyObj The notification which is to be passed to
77 * the 'handleNotification' method of the listener object.
78 *
79 * @exception MBeanException Wraps a distributed communication Exception.
80 * @exception RuntimeOperationsException Wraps an IllegalArgumentException:
81 * The Notification object passed in parameter is null.
82 *
83 */
84
85 public void sendNotification(Notification ntfyObj)
86 throws MBeanException, RuntimeOperationsException;
87
88 /**
89 * Sends a Notification which contains the text string that is passed in
90 * to the registered Notification listeners on the ModelMBean.
91 *
92 * @param ntfyText The text which is to be passed in the Notification to the 'handleNotification'
93 * method of the listener object.
94 * the constructed Notification will be:
95 * type "jmx.modelmbean.generic"
96 * source this ModelMBean instance
97 * sequence 1
98 *
99 *
100 * @exception MBeanException Wraps a distributed communication Exception.
101 * @exception RuntimeOperationsException Wraps an IllegalArgumentException:
102 * The Notification text string passed in parameter is null.
103 *
104 */
105 public void sendNotification(String ntfyText)
106 throws MBeanException, RuntimeOperationsException;
107
108 /**
109 * Sends an attributeChangeNotification which is passed in to
110 * the registered attributeChangeNotification listeners on the
111 * ModelMBean.
112 *
113 * @param notification The notification which is to be passed
114 * to the 'handleNotification' method of the listener object.
115 *
116 * @exception MBeanException Wraps a distributed communication Exception.
117 * @exception RuntimeOperationsException Wraps an IllegalArgumentException: The AttributeChangeNotification object passed in parameter is null.
118 *
119 */
120 public void sendAttributeChangeNotification(AttributeChangeNotification notification)
121 throws MBeanException, RuntimeOperationsException;
122
123
124 /**
125 * Sends an attributeChangeNotification which contains the old value and new value for the
126 * attribute to the registered AttributeChangeNotification listeners on the ModelMBean.
127 * <P>
128 * @param oldValue The original value for the Attribute
129 * @param newValue The current value for the Attribute
130 *<P>
131 * <PRE>
132 * The constructed attributeChangeNotification will be:
133 * type "jmx.attribute.change"
134 * source this ModelMBean instance
135 * sequence 1
136 * attributeName oldValue.getName()
137 * attributeType oldValue's class
138 * attributeOldValue oldValue.getValue()
139 * attributeNewValue newValue.getValue()
140 * </PRE>
141 *
142 * @exception MBeanException Wraps a distributed communication Exception.
143 * @exception RuntimeOperationsException Wraps an IllegalArgumentException: An Attribute object passed in parameter is null
144 * or the names of the two Attribute objects in parameter are not the same.
145 */
146 public void sendAttributeChangeNotification(Attribute oldValue, Attribute newValue)
147 throws MBeanException, RuntimeOperationsException;
148
149
150 /**
151 * Registers an object which implements the NotificationListener interface as a listener. This
152 * object's 'handleNotification()' method will be invoked when any attributeChangeNotification is issued through
153 * or by the ModelMBean. This does not include other Notifications. They must be registered
154 * for independently. An AttributeChangeNotification will be generated for this attributeName.
155 *
156 * @param listener The listener object which will handles notifications emitted by the registered MBean.
157 * @param attributeName The name of the ModelMBean attribute for which to receive change notifications.
158 * If null, then all attribute changes will cause an attributeChangeNotification to be issued.
159 * @param handback The context to be sent to the listener with the notification when a notification is emitted.
160 *
161 * @exception IllegalArgumentException The listener cannot be null.
162 * @exception MBeanException Wraps a distributed communication Exception.
163 * @exception RuntimeOperationsException Wraps an IllegalArgumentException The attribute name passed in parameter does not exist.
164 *
165 * @see #removeAttributeChangeNotificationListener
166 */
167 public void addAttributeChangeNotificationListener(NotificationListener listener,
168 String attributeName,
169 Object handback)
170 throws MBeanException, RuntimeOperationsException, IllegalArgumentException;
171
172
173 /**
174 * Removes a listener for attributeChangeNotifications from the RequiredModelMBean.
175 *
176 * @param listener The listener name which was handling notifications emitted by the registered MBean.
177 * This method will remove all information related to this listener.
178 * @param attributeName The attribute for which the listener no longer wants to receive attributeChangeNotifications.
179 * If null the listener will be removed for all attributeChangeNotifications.
180 *
181 * @exception ListenerNotFoundException The listener is not registered in the MBean or is null.
182 * @exception MBeanException Wraps a distributed communication Exception.
183 * @exception RuntimeOperationsException Wraps an IllegalArgumentException If the inAttributeName parameter does not
184 * correspond to an attribute name.
185 *
186 * @see #addAttributeChangeNotificationListener
187 */
188
189 public void removeAttributeChangeNotificationListener(NotificationListener listener,
190 String attributeName)
191 throws MBeanException, RuntimeOperationsException, ListenerNotFoundException;
192
193 }
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