org.glassfish.grizzly.nio.transport.UDPNIOAsyncQueueWriter Maven / Gradle / Ivy
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package org.glassfish.grizzly.nio.transport;
import org.glassfish.grizzly.asyncqueue.AsyncWriteQueueRecord;
import org.glassfish.grizzly.asyncqueue.WritableMessage;
import org.glassfish.grizzly.nio.NIOTransport;
import java.io.IOException;
import java.net.SocketAddress;
import org.glassfish.grizzly.IOEvent;
import org.glassfish.grizzly.asyncqueue.AsyncQueueWriter;
import org.glassfish.grizzly.asyncqueue.RecordWriteResult;
import org.glassfish.grizzly.nio.AbstractNIOAsyncQueueWriter;
import org.glassfish.grizzly.nio.NIOConnection;
/**
* The UDP transport {@link AsyncQueueWriter} implementation, based on
* the Java NIO
*
* @author Alexey Stashok
*/
public final class UDPNIOAsyncQueueWriter extends AbstractNIOAsyncQueueWriter {
public UDPNIOAsyncQueueWriter(final NIOTransport transport) {
super(transport);
}
@Override
@SuppressWarnings("unchecked")
protected RecordWriteResult write0(final NIOConnection connection,
final AsyncWriteQueueRecord queueRecord) throws IOException {
final RecordWriteResult writeResult =
queueRecord.getCurrentResult();
if (queueRecord.remaining() == 0) {
return writeResult.lastWriteResult(0,
queueRecord.isUncountable()
? AsyncWriteQueueRecord.UNCOUNTABLE_RECORD_SPACE_VALUE
: 0);
}
final WritableMessage outputMessage = queueRecord.getMessage();
final SocketAddress dstAddress = (SocketAddress) queueRecord.getDstAddress();
final long written = ((UDPNIOTransport) transport).write((UDPNIOConnection) connection,
dstAddress, outputMessage, writeResult);
return writeResult.lastWriteResult(written, written);
}
@Override
protected final void onReadyToWrite(final NIOConnection connection) throws IOException {
connection.enableIOEvent(IOEvent.WRITE);
}
}