/**
*
* Copyright 2004 Protique Ltd
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
**/
package org.activemq.transport.composite;
import java.net.URI;
import java.net.URISyntaxException;
import java.util.ArrayList;
import java.util.List;
import java.util.StringTokenizer;
import javax.jms.JMSException;
import org.activemq.io.WireFormat;
import org.activemq.transport.TransportChannel;
import org.activemq.transport.TransportChannelFactorySupport;
import org.activemq.util.JMSExceptionHelper;
/**
* A Composite implementation of a TransportChannelFactory
*
* @version $Revision: 1.1.1.1 $
*/
public class CompositeTransportChannelFactory extends TransportChannelFactorySupport {
private static String separator = ",";
public TransportChannel create(WireFormat wireFormat, URI remoteLocation) throws JMSException {
try {
List uris = new ArrayList();
String text = parseURIs(uris, remoteLocation);
uris = randomizeURIs(uris);
TransportChannel channel = new CompositeTransportChannel(wireFormat, uris);
return populateProperties(channel, text);
}
catch (URISyntaxException e) {
throw JMSExceptionHelper.newJMSException("Can't parse list of URIs for: " + remoteLocation + ". Reason: " + e, e);
}
}
public TransportChannel create(WireFormat wireFormat, URI remoteLocation, URI localLocation) throws JMSException {
return create(wireFormat, remoteLocation);
}
public boolean requiresEmbeddedBroker() {
return false;
}
public static String parseURIs(List uris, URI uri) throws URISyntaxException {
String answer = "";
String text = uri.getSchemeSpecificPart();
if (text.startsWith("(")) {
// lets find the end of the string
int count = 1;
int size = text.length();
for (int i = 1; i < size; i++) {
char ch = text.charAt(i);
if (ch == '(') {
count++;
}
else if (ch == ')') {
if (--count == 0) {
// we're at the end
answer = text.substring(i + 1);
text = text.substring(1, i);
break;
}
}
}
}
StringTokenizer iter = new StringTokenizer(text, separator);
while (iter.hasMoreTokens()) {
String child = stripLeadingSlashes(iter.nextToken().trim());
uris.add(new URI(child));
}
return answer;
}
protected static String stripLeadingSlashes(String text) {
int idx = 0;
while (idx < text.length() && text.charAt(idx) == '/') {
idx++;
}
if (idx > 0) {
return text.substring(idx);
}
return text;
}
protected List randomizeURIs(List uris) {
return uris;
}
}