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package com.sun.grizzly.connectioncache.server;

import com.sun.grizzly.DefaultSelectionKeyHandler;
import com.sun.grizzly.connectioncache.spi.transport.ConnectionCacheFactory;
import com.sun.grizzly.connectioncache.spi.transport.InboundConnectionCache;
import com.sun.grizzly.util.Copyable;
import java.nio.channels.SelectableChannel;
import java.nio.channels.SelectionKey;


/**
 * Extended implementation of the DefaultSelectionKeyHandler with
 * ConnectionManagement integrated in it
 *
 * @author Alexey Stashok
 */
public class CacheableSelectionKeyHandler extends DefaultSelectionKeyHandler {
    private InboundConnectionCache inboundConnectionCache;
    
    public CacheableSelectionKeyHandler() {
    }

        /**
     * Construct ConnectionManagementSelectionKeyHandler
     * @param highWaterMark max number of simultaneously open connections
     * @param numberToReclaim number of connections to reclaim
     */
    public CacheableSelectionKeyHandler(int highWaterMark, int numberToReclaim) {
        inboundConnectionCache = ConnectionCacheFactory.makeBlockingInboundConnectionCache(
                "Grizzly inbound connection cache", highWaterMark,
                numberToReclaim, getLogger());
    }
    
    @Override
    public void copyTo(Copyable copy) {
        super.copyTo(copy);
        CacheableSelectionKeyHandler copyHandler = 
                (CacheableSelectionKeyHandler) copy;
        copyHandler.inboundConnectionCache = inboundConnectionCache;
    }

    @Override
    public void process(SelectionKey key) {
        super.process(key);
        inboundConnectionCache.requestReceived(key.channel());
    }
    
    @Override
    public void postProcess(SelectionKey key) {
        SelectableChannel channel = key.channel();
        inboundConnectionCache.requestProcessed(channel, 1);
        inboundConnectionCache.responseSent(channel);
    }
    
    @Override
    public void cancel(SelectionKey key) {
        super.cancel(key);
        inboundConnectionCache.close(key.channel());
    }    
}