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 * 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
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 * or packager/legal/LICENSE.txt.  See the License for the specific
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package com.sun.grizzly.config;

import java.io.IOException;
import java.nio.ByteBuffer;
import java.nio.channels.SelectionKey;

import com.sun.grizzly.Context;
import com.sun.grizzly.portunif.DefaultFilterChainProtocolHandler;
import com.sun.grizzly.portunif.PUProtocolRequest;
import com.sun.grizzly.util.WorkerThread;
import javax.net.ssl.SSLEngine;

/**
 * This class maps the current request to its associated Container.
 *
 * @author Jeanfrancois Arcand
 */
public class WebProtocolHandler extends DefaultFilterChainProtocolHandler {
    // --------------------------------------------------------------------//
    private final String[] protocols;

    private final boolean isStickyMapping;
    
    public WebProtocolHandler(String protocolName, boolean isStickyMapping) {
        this.protocols = new String[] {protocolName};
        this.isStickyMapping = isStickyMapping;
    }
    // --------------------------------------------------------------------//

    /**
     * Based on the context-root, configure Grizzly's ProtocolChain with the proper ProtocolFilter, and if available,
     * proper Adapter.
     *
     * @return true if the ProtocolFilter was properly set.
     */
    @Override
    public boolean handle(final Context context, final PUProtocolRequest protocolRequest)
        throws IOException {
        protocolRequest.setMapSelectionKey(isStickyMapping);
        protocolRequest.setExecuteFilterChain(true);
        return true;
    }
    // -------------------------------------------------------------------- //

    /**
     * filter Returns an array of supported protocols.
     *
     * @return an array of supported protocols.
     */
    @Override
    public String[] getProtocols() {
        return protocols;
    }

    /**
     * Invoked when the SelectorThread is about to expire a SelectionKey.
     *
     * @return true if the SelectorThread should expire the SelectionKey, false if not.
     */
    @Override
    public boolean expireKey(final SelectionKey key) {
        return true;
    }

    /**
     * Returns ByteBuffer, where PUReadFilter will read data
     *
     * @return ByteBuffer
     */
    @Override
    public ByteBuffer getByteBuffer() {
        final WorkerThread workerThread = (WorkerThread) Thread.currentThread();
        final SSLEngine sslEngine = workerThread.getSSLEngine();
        if (sslEngine != null) {
            ByteBuffer secureInputBuffer = workerThread.getInputBB();
            if (secureInputBuffer == null) {
                final int securedBBSize = sslEngine.getSession().getPacketBufferSize();
                secureInputBuffer = ByteBuffer.allocate(securedBBSize * 2);
                workerThread.setInputBB(secureInputBuffer);
            }
            
            return secureInputBuffer;
        }
        return null;
    }
}