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;
19
20 import javax.jms.Destination;
21 import java.io.Serializable;
22 import java.util.Map;
23
24
25 /***
26 * Represents a node member in a cluster
27 *
28 * @version $Revision: 1.3 $
29 */
30 public interface Node extends Serializable {
31
32 /***
33 * Access to the queue to send messages direct to this node.
34 *
35 * @return the destination to send messages to this node while its available
36 */
37 public Destination getDestination();
38
39 /***
40 * @return an immutable map of the nodes state
41 */
42 public Map getState();
43
44 /***
45 * @return the name of the node
46 */
47 public String getName();
48
49 /***
50 * @return true if this node has been elected as coordinator
51 */
52 public boolean isCoordinator();
53 }