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package debug;

import java.io.IOException;
import java.nio.channels.DatagramChannel;
import java.nio.channels.Pipe;
import java.nio.channels.ServerSocketChannel;
import java.nio.channels.SocketChannel;
import java.nio.channels.spi.AbstractSelector;
import java.nio.channels.spi.SelectorProvider;
import java.util.concurrent.atomic.AtomicInteger;

/**
 *
 * @author oleksiys
 */
public class DebugSelectorProvider extends SelectorProvider {
    private static final AtomicInteger COUNTER = new AtomicInteger();
    
    private final SelectorProvider realProvider = sun.nio.ch.DefaultSelectorProvider.create();

    public DebugSelectorProvider() {
    }
    
    @Override
    public DatagramChannel openDatagramChannel() throws IOException {
        return realProvider.openDatagramChannel();
    }

    @Override
    public Pipe openPipe() throws IOException {
        return realProvider.openPipe();
    }

    @Override
    public AbstractSelector openSelector() throws IOException {
        new Exception("openSelector #" + COUNTER.incrementAndGet()).printStackTrace(System.out);
        return realProvider.openSelector();
    }

    @Override
    public ServerSocketChannel openServerSocketChannel() throws IOException {
        return realProvider.openServerSocketChannel();
    }

    @Override
    public SocketChannel openSocketChannel() throws IOException {
        return realProvider.openSocketChannel();
    }
}