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/*
* OperationFactory.java February 2007
*
* Copyright (C) 2007, Niall Gallagher <niallg@users.sf.net>
*
* 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.simpleframework.transport;
import java.io.IOException;
import javax.net.ssl.SSLEngine;
import org.simpleframework.transport.reactor.Operation;
import org.simpleframework.transport.reactor.Reactor;
/**
* The <code>OperationFactory</code> is used to create operations
* for the transport processor. Depending on the configuration of the
* pipeline object this will create different operations. Typically
* this will create an SSL handshake operation if the pipeline has
* an <code>SSLEngine</code> instance. This allows the transport
* processor to complete the handshake before handing the transport
* to the transporter for processing.
*
* @author Niall Gallagher
*/
class OperationFactory {
/**
* This is the processor used to process the created transport.
*/
private final TransportProcessor processor;
/**
* This is the reactor used to register for I/O notifications.
*/
private final Reactor reactor;
/**
* This is the threshold for the asynchronous buffers to use.
*/
private final int threshold;
/**
* This is the size of the buffers to be used by the transport.
*/
private final int buffer;
/**
* This determines if the SSL handshake is for the client side.
*/
private final boolean client;
/**
* Constructor for the <code>OperationFactory</code> object. This
* uses the processor provided to hand off the created transport
* when it has been created. All operations created typically
* execute in an asynchronous thread.
*
* @param processor the processor used to dispatch the transport
* @param reactor this is the reactor used for I/O notifications
* @param buffer this is the initial size of the buffer to use
*/
public OperationFactory(TransportProcessor processor, Reactor reactor, int buffer) {
this(processor, reactor, buffer, 20480);
}
/**
* Constructor for the <code>OperationFactory</code> object. This
* uses the processor provided to hand off the created transport
* when it has been created. All operations created typically
* execute in an asynchronous thread.
*
* @param processor the processor used to dispatch the transport
* @param reactor this is the reactor used for I/O notifications
* @param buffer this is the initial size of the buffer to use
* @param threshold maximum size of the output buffer to use
*/
public OperationFactory(TransportProcessor processor, Reactor reactor, int buffer, int threshold) {
this(processor, reactor, buffer, threshold, false);
}
/**
* Constructor for the <code>OperationFactory</code> object. This
* uses the processor provided to hand off the created transport
* when it has been created. All operations created typically
* execute in an asynchronous thread.
*
* @param processor the processor used to dispatch the transport
* @param reactor this is the reactor used for I/O notifications
* @param buffer this is the initial size of the buffer to use
* @param threshold maximum size of the output buffer to use
* @param client determines if the SSL handshake is for a client
*/
public OperationFactory(TransportProcessor processor, Reactor reactor, int buffer, int threshold, boolean client) {
this.processor = processor;
this.threshold = threshold;
this.reactor = reactor;
this.buffer = buffer;
this.client = client;
}
/**
* This method is used to create <code>Operation</code> object to
* process the next phase of the negotiation. The operations that
* are created using this factory ensure the processing can be
* done asynchronously, which reduces the overhead the connection
* thread has when handing the pipelines over for processing.
*
* @param socket this is the pipeline that is to be processed
*
* @return this returns the operation used for processing
*/
public Operation getInstance(Socket socket) throws IOException {
return getInstance(socket, socket.getEngine());
}
/**
* This method is used to create <code>Operation</code> object to
* process the next phase of the negotiation. The operations that
* are created using this factory ensure the processing can be
* done asynchronously, which reduces the overhead the connection
* thread has when handing the pipelines over for processing.
*
* @param socket this is the pipeline that is to be processed
* @param engine this is the engine used for SSL negotiations
*
* @return this returns the operation used for processing
*/
private Operation getInstance(Socket socket, SSLEngine engine) throws IOException {
Transport transport = new SocketTransport(socket, reactor, buffer, threshold);
if(engine != null) {
return new Handshake(processor, transport, reactor, client);
}
return new TransportDispatcher(processor, transport);
}
}
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