com.sun.grizzly.http.SelectorThreadKeyHandler Maven / Gradle / Ivy
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package com.sun.grizzly.http;
import com.sun.grizzly.DefaultSelectionKeyHandler;
import com.sun.grizzly.util.Copyable;
import com.sun.grizzly.util.ThreadAttachment;
import java.nio.channels.SelectionKey;
import java.util.Iterator;
import java.util.concurrent.ConcurrentLinkedQueue;
/**
* Default HTTP SelectionKeyHandler implementation
*
* @author Jean-Francois Arcand
* @author Alexey Stashok
*/
public class SelectorThreadKeyHandler extends DefaultSelectionKeyHandler {
/**
* Banned SelectionKey registration.
*/
protected ConcurrentLinkedQueue bannedKeys =
new ConcurrentLinkedQueue();
private SelectorThread selectorThread;
public SelectorThreadKeyHandler() {
}
public SelectorThreadKeyHandler(SelectorThread selectorThread) {
this.selectorThread = selectorThread;
}
@Override
public void copyTo(Copyable copy) {
super.copyTo(copy);
SelectorThreadKeyHandler copyHandler = (SelectorThreadKeyHandler) copy;
copyHandler.selectorThread = selectorThread;
}
@Override
public void doRegisterKey(SelectionKey key, int ops, long currentTime) {
if (!key.isValid() || !selectorThread.getKeepAliveCounter().trap(key)) {
selectorThread.cancelKey(key);
return;
}
// If the SelectionKey is used for continuation, do not allow
// the key to be registered.
if (selectorThread.getEnableAsyncExecution() && !bannedKeys.isEmpty()
&& bannedKeys.remove(key)){
return;
}
key.interestOps(key.interestOps() | ops);
Object attachment = key.attachment();
// By default, attachment a null.
if (attachment == null) {
key.attach(currentTime);
} else if (attachment instanceof ThreadAttachment) {
((ThreadAttachment) attachment).setTimeout(currentTime);
}
}
@Override
public void expire(Iterator keys) {
super.expire(keys);
}
@Override
public void cancel(SelectionKey key) {
if (key != null) {
selectorThread.getKeepAliveCounter().untrap(key);
}
if (selectorThread.isMonitoringEnabled()) {
selectorThread.getRequestGroupInfo().decreaseCountOpenConnections();
}
super.cancel(key);
}
/**
* Add a {@link SelectionKey} to the banned list of SelectionKeys.
* A SelectionKey is banned when new registration aren't allowed on the
* Selector.
*/
public void addBannedSelectionKey(SelectionKey key){
bannedKeys.offer(key);
}
}