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package com.pdd.pop.ext.glassfish.grizzly.strategies;
import java.io.IOException;
import java.util.concurrent.Executor;
import java.util.logging.Logger;
import com.pdd.pop.ext.glassfish.grizzly.Connection;
import com.pdd.pop.ext.glassfish.grizzly.Grizzly;
import com.pdd.pop.ext.glassfish.grizzly.IOEvent;
import com.pdd.pop.ext.glassfish.grizzly.IOEventLifeCycleListener;
import com.pdd.pop.ext.glassfish.grizzly.nio.NIOConnection;
import com.pdd.pop.ext.glassfish.grizzly.nio.SelectorRunner;
/**
* {@link com.pdd.pop.ext.glassfish.grizzly.IOStrategy}, which executes {@link com.pdd.pop.ext.glassfish.grizzly.Processor}s in a current threads, and
* resumes selector thread logic in separate thread.
*
* @author Alexey Stashok
*/
public final class LeaderFollowerNIOStrategy extends AbstractIOStrategy {
private static final LeaderFollowerNIOStrategy INSTANCE = new LeaderFollowerNIOStrategy();
private static final Logger logger = Grizzly.logger(LeaderFollowerNIOStrategy.class);
// ------------------------------------------------------------ Constructors
private LeaderFollowerNIOStrategy() { }
// ---------------------------------------------------------- Public Methods
public static LeaderFollowerNIOStrategy getInstance() {
return INSTANCE;
}
// ------------------------------------------------- Methods from IOStrategy
@Override
public boolean executeIoEvent(final Connection connection,
final IOEvent ioEvent, final boolean isIoEventEnabled) throws IOException {
final NIOConnection nioConnection = (NIOConnection) connection;
IOEventLifeCycleListener listener = null;
if (isReadWrite(ioEvent)) {
if (isIoEventEnabled) {
connection.disableIOEvent(ioEvent);
}
listener = ENABLE_INTEREST_LIFECYCLE_LISTENER;
}
final Executor threadPool = getThreadPoolFor(connection, ioEvent);
if (threadPool != null) {
final SelectorRunner runner = nioConnection.getSelectorRunner();
runner.postpone();
threadPool.execute(runner);
fireIOEvent(connection, ioEvent, listener, logger);
return false;
} else {
fireIOEvent(connection, ioEvent, listener, logger);
return true;
}
}
}