/**
* The MIT License
* Copyright (c) 2010 Tad Glines
*
* Contributors: Ovea.com, Mycila.com
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
package com.glines.socketio.server;
import com.glines.socketio.util.DefaultLoader;
import com.glines.socketio.util.ServiceClassLoader;
import java.lang.reflect.Constructor;
import java.lang.reflect.InvocationTargetException;
import java.util.Iterator;
import java.util.LinkedList;
import java.util.List;
import java.util.logging.Level;
import java.util.logging.Logger;
/**
* @author Mathieu Carbou
*/
public final class ClasspathTransportDiscovery implements TransportDiscovery {
private static final Logger LOGGER = Logger.getLogger(ClasspathTransportDiscovery.class.getName());
@Override
public Iterable<Transport> discover() {
List<Transport> transports = new LinkedList<Transport>();
// discover transports lazily
ServiceClassLoader<Transport> serviceClassLoader = ServiceClassLoader.load(
Transport.class,
new DefaultLoader(Thread.currentThread().getContextClassLoader()));
Iterator<Class<Transport>> it = serviceClassLoader.iterator();
while (it.hasNext()) {
Class<Transport> transportClass;
try {
transportClass = it.next();
} catch (Throwable e) {
LOGGER.log(Level.INFO, "Unable to load transport class: Error: " + e.getMessage(), e);
continue;
}
try {
Constructor<Transport> ctor = transportClass.getConstructor();
transports.add(ctor.newInstance());
} catch (InvocationTargetException e) {
LOGGER.log(Level.INFO, "Unable to load transport class " + transportClass.getName() + ". Error: " + e.getTargetException().getMessage(), e.getTargetException());
} catch (Throwable e) {
LOGGER.log(Level.INFO, "Unable to load transport class " + transportClass.getName() + ". Error: " + e.getMessage(), e);
}
}
return transports;
}
}