/*
* $HeadURL: http://svn.apache.org/repos/asf/httpcomponents/httpcore/tags/4.0/module-nio/src/main/java/org/apache/http/impl/nio/DefaultServerIOEventDispatch.java $
* $Revision: 744535 $
* $Date: 2009-02-14 18:17:22 +0100 (Sat, 14 Feb 2009) $
*
* ====================================================================
* 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.
* ====================================================================
*
* This software consists of voluntary contributions made by many
* individuals on behalf of the Apache Software Foundation. For more
* information on the Apache Software Foundation, please see
* <http://www.apache.org/>.
*
*/
package org.apache.http.impl.nio;
import org.apache.http.HttpRequest;
import org.apache.http.HttpRequestFactory;
import org.apache.http.impl.DefaultHttpRequestFactory;
import org.apache.http.nio.NHttpServerIOTarget;
import org.apache.http.nio.NHttpServiceHandler;
import org.apache.http.nio.reactor.IOEventDispatch;
import org.apache.http.nio.reactor.IOSession;
import org.apache.http.nio.util.ByteBufferAllocator;
import org.apache.http.nio.util.HeapByteBufferAllocator;
import org.apache.http.params.HttpParams;
import org.apache.http.protocol.ExecutionContext;
/**
* Default implementation of {@link IOEventDispatch} interface for plain
* (unencrypted) server-side HTTP connections.
*
*
* @version $Revision: 744535 $
*
* @since 4.0
*/
public class DefaultServerIOEventDispatch implements IOEventDispatch {
protected final ByteBufferAllocator allocator;
protected final NHttpServiceHandler handler;
protected final HttpParams params;
/**
* Creates a new instance of this class to be used for dispatching I/O event
* notifications to the given protocol handler.
*
* @param handler the server protocol handler.
* @param params HTTP parameters.
*/
public DefaultServerIOEventDispatch(
final NHttpServiceHandler handler,
final HttpParams params) {
super();
if (handler == null) {
throw new IllegalArgumentException("HTTP service handler may not be null");
}
if (params == null) {
throw new IllegalArgumentException("HTTP parameters may not be null");
}
this.allocator = createByteBufferAllocator();
this.handler = handler;
this.params = params;
}
/**
* Creates an instance of {@link HeapByteBufferAllocator} to be used
* by HTTP connections for allocating {@link java.nio.ByteBuffer} objects.
* <p>
* This method can be overridden in a super class in order to provide
* a different implementation of the {@link ByteBufferAllocator} interface.
*
* @return byte buffer allocator.
*/
protected ByteBufferAllocator createByteBufferAllocator() {
return new HeapByteBufferAllocator();
}
/**
* Creates an instance of {@link DefaultHttpRequestFactory} to be used
* by HTTP connections for creating {@link HttpRequest} objects.
* <p>
* This method can be overridden in a super class in order to provide
* a different implementation of the {@link HttpRequestFactory} interface.
*
* @return HTTP request factory.
*/
protected HttpRequestFactory createHttpRequestFactory() {
return new DefaultHttpRequestFactory();
}
/**
* Creates an instance of {@link DefaultNHttpServerConnection} based on the
* given {@link IOSession}.
* <p>
* This method can be overridden in a super class in order to provide
* a different implementation of the {@link NHttpServerIOTarget} interface.
*
* @param session the underlying I/O session.
*
* @return newly created HTTP connection.
*/
protected NHttpServerIOTarget createConnection(final IOSession session) {
return new DefaultNHttpServerConnection(
session,
createHttpRequestFactory(),
this.allocator,
this.params);
}
public void connected(final IOSession session) {
NHttpServerIOTarget conn = createConnection(session);
session.setAttribute(ExecutionContext.HTTP_CONNECTION, conn);
this.handler.connected(conn);
}
public void disconnected(final IOSession session) {
NHttpServerIOTarget conn =
(NHttpServerIOTarget) session.getAttribute(ExecutionContext.HTTP_CONNECTION);
if (conn != null) {
this.handler.closed(conn);
}
}
public void inputReady(final IOSession session) {
NHttpServerIOTarget conn =
(NHttpServerIOTarget) session.getAttribute(ExecutionContext.HTTP_CONNECTION);
conn.consumeInput(this.handler);
}
public void outputReady(final IOSession session) {
NHttpServerIOTarget conn =
(NHttpServerIOTarget) session.getAttribute(ExecutionContext.HTTP_CONNECTION);
conn.produceOutput(this.handler);
}
public void timeout(final IOSession session) {
NHttpServerIOTarget conn =
(NHttpServerIOTarget) session.getAttribute(ExecutionContext.HTTP_CONNECTION);
this.handler.timeout(conn);
}
}