com.sun.grizzly.arp.AsyncInterceptor Maven / Gradle / Ivy

Go to download
Show more of this group Show more artifacts with this name
Show all versions of grizzly-http Show documentation
There is a newer version: 2.0.0-RC1
/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 *
 * Copyright (c) 2009-2010 Oracle and/or its affiliates. All rights reserved.
 *
 * The contents of this file are subject to the terms of either the GNU
 * General Public License Version 2 only ("GPL") or the Common Development
 * and Distribution License("CDDL") (collectively, the "License").  You
 * may not use this file except in compliance with the License.  You can
 * obtain a copy of the License at
 * https://glassfish.dev.java.net/public/CDDL+GPL_1_1.html
 * or packager/legal/LICENSE.txt.  See the License for the specific
 * language governing permissions and limitations under the License.
 *
 * When distributing the software, include this License Header Notice in each
 * file and include the License file at packager/legal/LICENSE.txt.
 *
 * GPL Classpath Exception:
 * Oracle designates this particular file as subject to the "Classpath"
 * exception as provided by Oracle in the GPL Version 2 section of the License
 * file that accompanied this code.
 *
 * Modifications:
 * If applicable, add the following below the License Header, with the fields
 * enclosed by brackets [] replaced by your own identifying information:
 * "Portions Copyright [year] [name of copyright owner]"
 *
 * Contributor(s):
 * If you wish your version of this file to be governed by only the CDDL or
 * only the GPL Version 2, indicate your decision by adding "[Contributor]
 * elects to include this software in this distribution under the [CDDL or GPL
 * Version 2] license."  If you don't indicate a single choice of license, a
 * recipient has the option to distribute your version of this file under
 * either the CDDL, the GPL Version 2 or to extend the choice of license to
 * its licensees as provided above.  However, if you add GPL Version 2 code
 * and therefore, elected the GPL Version 2 license, then the option applies
 * only if the new code is made subject to such option by the copyright
 * holder.
 */

package com.sun.grizzly.arp;

import com.sun.grizzly.util.Interceptor;
import com.sun.grizzly.util.Utils;
import java.io.IOException;
import java.nio.ByteBuffer;
import java.nio.channels.SocketChannel;
import java.util.ArrayList;

/**
 * Determine if a request can be executed using an {@link AsyncHandler} or not.
 * @author Jeanfrancois Arcand
 */
public class AsyncInterceptor implements Interceptor{
   
    protected ArrayList allowed = new ArrayList();
    
    /**
     * Introspect the request and determine if the target url can
     * execute under {@link AsyncHandler} or not.
     * @param bb The current byteBuffer.
     * @param handlerCode - no used.
     * @return An {@link Interceptor} value determining if an {@link AsyncHandler} 
     * should be allowed to execute or not.
     * @throws java.io.IOException
     */
    public int handle(ByteBuffer bb, int handlerCode) throws IOException {
        int pos = bb.position();
        int limit = bb.limit();
        
        try{
            // TODO: Add patten matching.
            for (byte[] b: allowed){
                if (Utils.findBytes(bb,b) > -1){
                    return Interceptor.CONTINUE;
                }
            }
            
        } finally {
            bb.position(pos);
            bb.limit(limit);
        }
        return Interceptor.BREAK;
    }

    
    public void attachChannel(SocketChannel socketChannel) {
    }
    
    /**
     * Add a context-path that will be allowed to execute under {@link AsyncHandler}.
     * @param s a context-path that will be allowed to execute under {@link AsyncHandler}.
     */
    public void addContextPath(String s) {
        allowed.add(s.getBytes());
    }  
    
}