org.glassfish.grizzly.nio
Class AbstractNIOAsyncQueueReader

java.lang.Object
  org.glassfish.grizzly.AbstractReader<SocketAddress>
      org.glassfish.grizzly.nio.AbstractNIOAsyncQueueReader

All Implemented Interfaces:

AsyncQueue, AsyncQueueReader<SocketAddress>, Reader<SocketAddress>

Direct Known Subclasses:

TCPNIOAsyncQueueReader, UDPNIOAsyncQueueReader

public abstract class AbstractNIOAsyncQueueReader
extends AbstractReader<SocketAddress>
implements AsyncQueueReader<SocketAddress>

The AsyncQueueReader implementation, based on the Java NIO

Author:

Alexey Stashok, Ryan Lubke, Gustav Trede

Nested Class Summary

Nested classes/interfaces inherited from interface org.glassfish.grizzly.asyncqueue.AsyncQueue

AsyncQueue.AsyncResult

Field Summary

static int	DEFAULT_BUFFER_SIZE
protected int	defaultBufferSize
protected NIOTransport	transport

Fields inherited from interface org.glassfish.grizzly.Reader

COMPLETE_EVENT, INCOMPLETE_EVENT, READ_EVENT

Fields inherited from interface org.glassfish.grizzly.asyncqueue.AsyncQueue

EXPECTING_MORE_OPTION

Constructor Summary

AbstractNIOAsyncQueueReader(NIOTransport transport)

Method Summary

void	close() Close AsyncQueueProcessor and release associated resources
protected int	doRead(Connection connection, AsyncReadQueueRecord queueRecord) Performs real read on the NIO channel
boolean	isReady(Connection connection) Checks whether there is ready data in AsyncQueue, associated with the Connection.
void	onClose(Connection connection) Callback method, which is called, when Connection has been closed, to let processor release a connection associated resources.
protected void	onReadFailure(Connection connection, AsyncReadQueueRecord failedRecord, IOException e)
protected abstract void	onReadyToRead(Connection connection)
AsyncQueue.AsyncResult	processAsync(Context context) Callback method, which is called async.
void	read(Connection connection, Buffer buffer, CompletionHandler<ReadResult<Buffer,SocketAddress>> completionHandler, Interceptor<ReadResult> interceptor) Method reads data to the buffer.
protected abstract int	read0(Connection connection, Buffer buffer, ReadResult<Buffer,SocketAddress> currentResult)

Methods inherited from class org.glassfish.grizzly.AbstractReader

read, read, read

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface org.glassfish.grizzly.Reader

read, read, read

Field Detail

DEFAULT_BUFFER_SIZE

public static final int DEFAULT_BUFFER_SIZE

See Also:

Constant Field Values

defaultBufferSize

protected int defaultBufferSize

transport

protected final NIOTransport transport

Constructor Detail

AbstractNIOAsyncQueueReader

public AbstractNIOAsyncQueueReader(NIOTransport transport)

Method Detail

read

public void read(Connection connection,
                 Buffer buffer,
                 CompletionHandler<ReadResult<Buffer,SocketAddress>> completionHandler,
                 Interceptor<ReadResult> interceptor)

Method reads data to the buffer.

Specified by:

read in interface Reader<SocketAddress>

Parameters:

connection - the Connection to read from

buffer - the Buffer to which data will be read

completionHandler - CompletionHandler, which will get notified, when read will be completed

interceptor - Interceptor, which will be able to intercept control each time new portion of a data was read to a buffer. The interceptor can decide, whether asynchronous read is completed or not, or provide other processing instructions.

isReady

public final boolean isReady(Connection connection)

Checks whether there is ready data in AsyncQueue, associated with the Connection.

Specified by:

isReady in interface AsyncQueue

Parameters:

connection - Connection

Returns:

true, if there is ready data, or false otherwise.

processAsync

public AsyncQueue.AsyncResult processAsync(Context context)

Callback method, which is called async. to process ready AsyncQueue, which are associated with the given Connection

Specified by:

processAsync in interface AsyncQueue

Parameters:

context - Context

Returns:

AsyncQueue.AsyncResult, depending on async queue status.

onClose

public void onClose(Connection connection)

Callback method, which is called, when Connection has been closed, to let processor release a connection associated resources.

Specified by:

onClose in interface AsyncQueue

Parameters:

connection - Connection

close

public final void close()

Close AsyncQueueProcessor and release associated resources

Specified by:

close in interface AsyncQueue

doRead

protected final int doRead(Connection connection,
                           AsyncReadQueueRecord queueRecord)
                    throws IOException

Performs real read on the NIO channel

Parameters:

connection - the Connection to read from

queueRecord - the record to be read to

Throws:

IOException

onReadFailure

protected final void onReadFailure(Connection connection,
                                   AsyncReadQueueRecord failedRecord,
                                   IOException e)

read0

protected abstract int read0(Connection connection,
                             Buffer buffer,
                             ReadResult<Buffer,SocketAddress> currentResult)
                      throws IOException

Throws:

IOException

onReadyToRead

protected abstract void onReadyToRead(Connection connection)
                               throws IOException

Throws:

IOException