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 *
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
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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 https://glassfish.dev.java.net/public/CDDL+GPL.html
 * or glassfish/bootstrap/legal/LICENSE.txt.  See the License for the specific
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 * file and include the License file at glassfish/bootstrap/legal/LICENSE.txt.
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package com.sun.grizzly.strategies;

import java.io.IOException;
import java.util.concurrent.Executor;
import com.sun.grizzly.Connection;
import com.sun.grizzly.IOEvent;
import com.sun.grizzly.ProcessorRunnable;
import com.sun.grizzly.Strategy;
import com.sun.grizzly.Transport;
import com.sun.grizzly.utils.CurrentThreadExecutor;
import com.sun.grizzly.utils.WorkerThreadExecutor;

/**
 * {@link Strategy}, which executes {@link Processor}s in worker thread.
 *
 * @author Alexey Stashok
 */
public class WorkerThreadStrategy implements Strategy {
    /*
     * NONE,
     * SERVER_ACCEPT,
     * ACCEPTED,
     * CONNECTED,
     * READ,
     * WRITE,
     * CLOSED
     */
    private Executor[] executors;
    private Executor sameThreadProcessorExecutor;
    private Executor workerThreadProcessorExecutor;

    public WorkerThreadStrategy(Transport transport) {
        this(new CurrentThreadExecutor(), new WorkerThreadExecutor(transport));
    }

    public WorkerThreadStrategy(Executor sameThreadProcessorExecutor,
            Executor workerThreadProcessorExecutor) {
        
        this.sameThreadProcessorExecutor = sameThreadProcessorExecutor;
        this.workerThreadProcessorExecutor = workerThreadProcessorExecutor;

        executors = new Executor[] {null, sameThreadProcessorExecutor,
            sameThreadProcessorExecutor, sameThreadProcessorExecutor,
            workerThreadProcessorExecutor, workerThreadProcessorExecutor,
            workerThreadProcessorExecutor};
    }

   /**
    * {@inheritDoc}
    */
    public Object prepare(Connection connection, IOEvent ioEvent) {
        return null;
    }

   /**
    * {@inheritDoc}
    */
    public void executeProcessor(Object strategyContext,
            ProcessorRunnable processorRunnable) throws IOException {

        Executor executor = executors[processorRunnable.getIoEvent().ordinal()];
        executor.execute(processorRunnable);
    }

   /**
    * {@inheritDoc}
    */
    public boolean isTerminateThread(Object strategyContext) {
        return false;
    }
}