AsyncInterceptor.java

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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<ByteBuffer,SocketChannel>{
   
    protected ArrayList<byte[]> allowed = new ArrayList<byte[]>();
    
    /**
     * 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());
    }  
    
}