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package org.glassfish.grizzly.nio.transport;
import java.io.IOException;
import java.net.SocketAddress;
import org.glassfish.grizzly.*;
import org.glassfish.grizzly.asyncqueue.AsyncQueueReader;
import org.glassfish.grizzly.asyncqueue.AsyncReadQueueRecord;
import org.glassfish.grizzly.nio.AbstractNIOAsyncQueueReader;
import org.glassfish.grizzly.nio.NIOConnection;
import org.glassfish.grizzly.nio.NIOTransport;
/**
* The TCP transport {@link AsyncQueueReader} implementation, based on
* the Java NIO
*
* @author Alexey Stashok
*/
public final class TCPNIOAsyncQueueReader extends AbstractNIOAsyncQueueReader {
public TCPNIOAsyncQueueReader(NIOTransport transport) {
super(transport);
}
@Override
protected int read0(final Connection connection, Buffer buffer,
final ReadResult<Buffer, SocketAddress> currentResult) throws IOException {
final int oldPosition = buffer != null ? buffer.position() : 0;
if ((buffer = ((TCPNIOTransport) transport).read(connection, buffer)) != null) {
final int readBytes = buffer.position() - oldPosition;
currentResult.setMessage(buffer);
currentResult.setReadSize(currentResult.getReadSize() + readBytes);
currentResult.setSrcAddressHolder(((TCPNIOConnection) connection).peerSocketAddressHolder);
return readBytes;
}
return 0;
}
protected void addRecord(Connection connection,
Buffer buffer,
CompletionHandler completionHandler,
Interceptor<ReadResult> interceptor) {
final AsyncReadQueueRecord record = AsyncReadQueueRecord.create(
connection, buffer,
completionHandler, interceptor);
((TCPNIOConnection) connection).getAsyncReadQueue().offer(record);
}
@Override
protected final void onReadyToRead(Connection connection) throws IOException {
final NIOConnection nioConnection = (NIOConnection) connection;
nioConnection.enableIOEvent(IOEvent.READ);
}
}