001: /* ====================================================================
002: * The LateralNZ Software License, Version 1.0
003: *
004: * Copyright (c) 2003 LateralNZ. All rights reserved.
005: *
006: * Redistribution and use in source and binary forms, with or without
007: * modification, are permitted provided that the following conditions
008: * are met:
009: *
010: * 1. Redistributions of source code must retain the above copyright
011: * notice, this list of conditions and the following disclaimer.
012: *
013: * 2. Redistributions in binary form must reproduce the above copyright
014: * notice, this list of conditions and the following disclaimer in
015: * the documentation and/or other materials provided with the
016: * distribution.
017: *
018: * 3. The end-user documentation included with the redistribution,
019: * if any, must include the following acknowledgment:
020: * "This product includes software developed by
021: * LateralNZ (http://www.lateralnz.org/) and other third parties."
022: * Alternately, this acknowledgment may appear in the software itself,
023: * if and wherever such third-party acknowledgments normally appear.
024: *
025: * 4. The names "LateralNZ" must not be used to endorse or promote
026: * products derived from this software without prior written
027: * permission. For written permission, please
028: * contact oss@lateralnz.org.
029: *
030: * 5. Products derived from this software may not be called "Panther",
031: * or "Lateral" or "LateralNZ", nor may "PANTHER" or "LATERAL" or
032: * "LATERALNZ" appear in their name, without prior written
033: * permission of LateralNZ.
034: *
035: * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
036: * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
037: * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
038: * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
039: * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
040: * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
041: * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
042: * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
043: * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
044: * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
045: * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
046: * SUCH DAMAGE.
047: * ====================================================================
048: *
049: * This software consists of voluntary contributions made by many
050: * individuals on behalf of LateralNZ. For more
051: * information on Lateral, please see http://www.lateralnz.com/ or
052: * http://www.lateralnz.org
053: *
054: */
055: package org.lateralnz.messaging.broadcast;
056:
057: import java.util.Map;
058: import java.util.HashMap;
059: import java.util.ResourceBundle;
060:
061: import org.apache.log4j.Logger;
062:
063: import org.lateralnz.common.util.ResourceUtils;
064: import org.lateralnz.common.util.StringUtils;
065: import org.lateralnz.messaging.Message;
066: import org.lateralnz.messaging.MessageHandler;
067: import org.lateralnz.messaging.MessageListener;
068:
069: /**
070: *
071: * @author J R Briggs
072: */
073: public class BroadcastMessageHandlerFactory {
074: private static final Logger log = Logger
075: .getLogger(BroadcastMessageHandlerFactory.class.getName());
076: private static BroadcastMessageHandlerFactory obj = new BroadcastMessageHandlerFactory();
077: private static ResourceBundle resources = ResourceUtils
078: .getStaticBundle(BroadcastMessageHandlerFactory.class);
079:
080: private String defaultAddress = null;
081: private int defaultPort = 5555;
082:
083: private Map handlers = new HashMap();
084:
085: private BroadcastMessageHandlerFactory() {
086: }
087:
088: public static final BroadcastMessageHandlerFactory getInstance() {
089: return obj;
090: }
091:
092: /**
093: * get the handler with the specified ip address and port
094: */
095: public MessageHandler getHandler(String ipaddress, int port)
096: throws Exception {
097: String key = ipaddress + port;
098: if (!handlers.containsKey(key)) {
099: synchronized (handlers) {
100: if (!handlers.containsKey(key)) {
101: handlers.put(key, new BroadcastMessageHandler(
102: ipaddress, port));
103: }
104: }
105: }
106: return (MessageHandler) handlers.get(key);
107: }
108:
109: /**
110: * get the default handler
111: */
112: public MessageHandler getDefaultHandler() throws Exception {
113: if (StringUtils.isEmpty(defaultAddress)) {
114: defaultAddress = resources.getString("default_address");
115: defaultPort = Integer.parseInt(resources
116: .getString("default_port"));
117: }
118: return getHandler(defaultAddress, defaultPort);
119: }
120:
121: // testing purposes
122: public static final void main(String[] args) {
123: try {
124: MessageHandler nh = BroadcastMessageHandlerFactory
125: .getInstance().getHandler("192.168.242.255", 5555);
126:
127: MessageListener nl1 = new MessageListener() {
128: public void handle(Message event) {
129: System.out.println("received " + event);
130: }
131: };
132:
133: nh.addListener("test", nl1);
134:
135: Thread.sleep(1000);
136: if (args.length > 0) {
137: for (int i = 0; i < 1000; i++) {
138: nh.send(new Message(1, "test", "hello" + i));
139: }
140: }
141: } catch (Exception e) {
142: e.printStackTrace();
143: }
144: }
145: }
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