/*
* 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.mina.transport.socket.nio.support;
import org.apache.mina.common.ByteBuffer;
import org.apache.mina.common.IoFilterChain;
import org.apache.mina.common.IoSession;
import org.apache.mina.common.IoFilter.WriteRequest;
import org.apache.mina.common.support.AbstractIoFilterChain;
import org.apache.mina.util.Queue;
/**
* An {@link IoFilterChain} for datagram transport (UDP/IP).
*
* @author The Apache Directory Project (mina-dev@directory.apache.org)
*/
class DatagramFilterChain extends AbstractIoFilterChain {
DatagramFilterChain(IoSession parent) {
super(parent);
}
protected void doWrite(IoSession session, WriteRequest writeRequest) {
DatagramSessionImpl s = (DatagramSessionImpl) session;
Queue writeRequestQueue = s.getWriteRequestQueue();
// SocketIoProcessor.doFlush() will reset it after write is finished
// because the buffer will be passed with messageSent event.
((ByteBuffer) writeRequest.getMessage()).mark();
synchronized (writeRequestQueue) {
writeRequestQueue.push(writeRequest);
if (writeRequestQueue.size() == 1
&& session.getTrafficMask().isWritable()) {
// Notify DatagramService only when writeRequestQueue was empty.
s.getManagerDelegate().flushSession(s);
}
}
}
protected void doClose(IoSession session) {
DatagramSessionImpl s = (DatagramSessionImpl) session;
DatagramService manager = s.getManagerDelegate();
if (manager instanceof DatagramConnectorDelegate) {
((DatagramConnectorDelegate) manager).closeSession(s);
} else {
((DatagramAcceptorDelegate) manager).getListeners()
.fireSessionDestroyed(session);
session.getCloseFuture().setClosed();
}
}
}