org.glassfish.grizzly.nio.DefaultSelectionKeyHandler Maven / Gradle / Ivy
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package org.glassfish.grizzly.nio;
import org.glassfish.grizzly.Grizzly;
import org.glassfish.grizzly.IOEvent;
import java.io.IOException;
import java.nio.channels.SelectionKey;
import java.util.Arrays;
import java.util.logging.Level;
import java.util.logging.Logger;
/**
*
* @author oleksiys
*/
public final class DefaultSelectionKeyHandler implements SelectionKeyHandler {
private static final Logger LOGGER = Grizzly.logger(DefaultSelectionKeyHandler.class);
// Comment the mapping array and use if instead (appear to be faster)
//
// private static final int[] ioEvent2SelectionKeyInterest = {
// 0, SelectionKey.OP_ACCEPT, 0, SelectionKey.OP_CONNECT, 0,
// SelectionKey.OP_READ, SelectionKey.OP_WRITE, 0};
private final static IOEvent[][] ioEventMap;
static {
ioEventMap = new IOEvent[32][];
for (int i = 0; i < ioEventMap.length; i++) {
int idx = 0;
IOEvent[] tmpArray = new IOEvent[4];
if ((i & SelectionKey.OP_READ) != 0) {
tmpArray[idx++] = IOEvent.READ;
}
if ((i & SelectionKey.OP_WRITE) != 0) {
tmpArray[idx++] = IOEvent.WRITE;
}
if ((i & SelectionKey.OP_CONNECT) != 0) {
tmpArray[idx++] = IOEvent.CLIENT_CONNECTED;
}
if ((i & SelectionKey.OP_ACCEPT) != 0) {
tmpArray[idx++] = IOEvent.SERVER_ACCEPT;
}
ioEventMap[i] = Arrays.copyOf(tmpArray, idx);
}
}
@Override
public void onKeyRegistered(SelectionKey key) {
if (LOGGER.isLoggable(Level.FINE)) {
LOGGER.log(Level.FINE, "KEY IS REGISTERED: {0}", key);
}
}
@Override
public void onKeyDeregistered(SelectionKey key) {
if (LOGGER.isLoggable(Level.FINE)) {
LOGGER.log(Level.FINE, "KEY IS DEREGISTERED: {0}", key);
}
}
@Override
public void cancel(SelectionKey key) throws IOException {
onKeyDeregistered(key);
key.cancel();
}
@Override
public int ioEvent2SelectionKeyInterest(IOEvent ioEvent) {
switch (ioEvent) {
case READ: return SelectionKey.OP_READ;
case WRITE: return SelectionKey.OP_WRITE;
case SERVER_ACCEPT: return SelectionKey.OP_ACCEPT;
case CLIENT_CONNECTED: return SelectionKey.OP_CONNECT;
default: return 0;
}
}
@Override
public IOEvent[] getIOEvents(int interest) {
return ioEventMap[interest];
}
@Override
public IOEvent selectionKeyInterest2IoEvent(int selectionKeyInterest) {
if ((selectionKeyInterest & SelectionKey.OP_READ) != 0) {
return IOEvent.READ;
} else if ((selectionKeyInterest & SelectionKey.OP_WRITE) != 0) {
return IOEvent.WRITE;
} else if ((selectionKeyInterest & SelectionKey.OP_ACCEPT) != 0) {
return IOEvent.SERVER_ACCEPT;
} else if ((selectionKeyInterest & SelectionKey.OP_CONNECT) != 0) {
return IOEvent.CLIENT_CONNECTED;
}
return IOEvent.NONE;
}
@Override
public boolean onProcessInterest(SelectionKey key, int interest)
throws IOException {
return true;
}
@Override
public NIOConnection getConnectionForKey(SelectionKey selectionKey) {
return (NIOConnection) selectionKey.attachment();
}
@Override
public void setConnectionForKey(NIOConnection connection,
SelectionKey selectionKey) {
selectionKey.attach(connection);
}
}