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/*
*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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.apache.qpid.transport.network;
import java.util.LinkedList;
import java.util.List;
import org.apache.qpid.transport.TransportException;
/**
* Loads the network transport class.
*/
public class Transport
{
public static final String TCP = "tcp";
public static final String UDP = "udp";
public static final String VM = "vm";
public static final String SOCKET = "socket";
public static final String MULTICAST = "multicast"; // TODO
public static final int DEFAULT_BUFFER_SIZE = 32 * 1024;
public static final long DEFAULT_TIMEOUT = 60000;
public static final boolean WINDOWS = ((String) System.getProperties().get("os.name")).matches("(?i).*windows.*");
public static final String MINA_TRANSPORT = "org.apache.qpid.transport.network.mina.MinaNetworkTransport";
public static final String IO_TRANSPORT = "org.apache.qpid.transport.network.io.IoNetworkTransport";
public static final String NIO_TRANSPORT = "org.apache.qpid.transport.network.nio.NioNetworkTransport"; // TODO
public static final String NETTY_TRANSPORT = "org.apache.qpid.transport.network.netty.NettyNetworkTransport"; // TODO
private static final List<String> _incoming = new LinkedList<String>();
private static final List<String> _outgoing = new LinkedList<String>();
public static void registerIncomingTransport(Class<? extends IncomingNetworkTransport> transport)
{
registerTransport(_incoming, transport.getName());
}
public static void registerIncomingTransport(String transport)
{
registerTransport(_incoming, transport);
}
public static void registerOutgoingTransport(Class<? extends OutgoingNetworkTransport> transport)
{
registerTransport(_outgoing, transport.getName());
}
public static void registerOutgoingTransport(String transport)
{
registerTransport(_outgoing, transport);
}
private static void registerTransport(List<String> registered, String transport)
{
registered.add(transport);
}
public static IncomingNetworkTransport getIncomingTransport() throws TransportException
{
return (IncomingNetworkTransport) getTransport("incoming", _incoming, MINA_TRANSPORT, null);
}
public static OutgoingNetworkTransport getOutgoingTransport() throws TransportException
{
return (OutgoingNetworkTransport) getTransport("outgoing", _outgoing, MINA_TRANSPORT, null);
}
public static OutgoingNetworkTransport getOutgoingTransport(String protocol) throws TransportException
{
return (OutgoingNetworkTransport) getTransport("outgoing", _outgoing, IO_TRANSPORT, protocol);
}
private static NetworkTransport getTransport(String direction, List<String> registered, String defaultTransport, String protocol)
{
for (String transport : registered)
{
try
{
Class<?> clazz = Class.forName(transport);
NetworkTransport network = (NetworkTransport) clazz.newInstance();
if (protocol == null || network.isCompatible(protocol))
{
return network;
}
}
catch (Exception e)
{
// Ignore and move to next class
}
}
try
{
String transport = System.getProperty("qpid.transport." + direction, defaultTransport);
Class<?> clazz = Class.forName(transport);
NetworkTransport network = (NetworkTransport) clazz.newInstance();
if (protocol == null || network.isCompatible(protocol))
{
return network;
}
}
catch (Exception e)
{
throw new TransportException("Error while creating a new " + direction + " transport instance", e);
}
throw new TransportException("Cannot create " + direction + " transport supporting " + protocol);
}
}
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