com.liferay.portal.kernel.nio.intraband
Class Datagram

java.lang.Object
  com.liferay.portal.kernel.nio.intraband.Datagram

public class Datagram
extends java.lang.Object

Represents the communication unit of Intraband.

Encodes/decodes data to/from big-endian byte order data format:

Name	Type	Size(byte)	Offset
Status Flag	byte	1	0
Sequence ID	long	8	1
Data Type	byte	1	9
Data Size	int	4	10
Data Chunk	byte[]	${Data Size}	14

Author:

Shuyang Zhou

Field Summary

protected java.lang.Object	attachment
protected CompletionHandler<java.lang.Object>	completionHandler
protected java.util.EnumSet<CompletionHandler.CompletionType>	completionTypes
protected long	expireTime
protected long	timeout

Method Summary

protected static Datagram	createACKResponseDatagram(long sequenceId)
protected static Datagram	createReceiveDatagram()
static Datagram	createRequestDatagram(byte type, byte[] data)
static Datagram	createRequestDatagram(byte type, java.nio.ByteBuffer dataByteBuffer)
static Datagram	createResponseDatagram(Datagram requestDatagram, byte[] data)
static Datagram	createResponseDatagram(Datagram requestDatagram, java.nio.ByteBuffer byteBuffer)
java.nio.ByteBuffer	getDataByteBuffer()
protected long	getSequenceId()
byte	getType()
protected boolean	isAckRequest()
protected boolean	isAckResponse()
protected boolean	isRequest()
protected boolean	isResponse()
protected boolean	readFrom(java.nio.channels.ScatteringByteChannel scatteringByteChannel)
protected void	setAckRequest(boolean ackRequest)
protected void	setSequenceId(long sequenceId)
java.lang.String	toString()
protected boolean	writeTo(java.nio.channels.GatheringByteChannel gatheringByteChannel)

Methods inherited from class java.lang.Object

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

Field Detail

attachment

protected java.lang.Object attachment

completionHandler

protected CompletionHandler<java.lang.Object> completionHandler

completionTypes

protected java.util.EnumSet<CompletionHandler.CompletionType> completionTypes

expireTime

protected long expireTime

timeout

protected long timeout

Method Detail

createRequestDatagram

public static Datagram createRequestDatagram(byte type,
                                             byte[] data)

createRequestDatagram

public static Datagram createRequestDatagram(byte type,
                                             java.nio.ByteBuffer dataByteBuffer)

createResponseDatagram

public static Datagram createResponseDatagram(Datagram requestDatagram,
                                              byte[] data)

createResponseDatagram

public static Datagram createResponseDatagram(Datagram requestDatagram,
                                              java.nio.ByteBuffer byteBuffer)

getDataByteBuffer

public java.nio.ByteBuffer getDataByteBuffer()

getType

public byte getType()

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

createACKResponseDatagram

protected static Datagram createACKResponseDatagram(long sequenceId)

createReceiveDatagram

protected static Datagram createReceiveDatagram()

getSequenceId

protected long getSequenceId()

isAckRequest

protected boolean isAckRequest()

isAckResponse

protected boolean isAckResponse()

isRequest

protected boolean isRequest()

isResponse

protected boolean isResponse()

readFrom

protected boolean readFrom(java.nio.channels.ScatteringByteChannel scatteringByteChannel)
                    throws java.io.IOException

Throws:

java.io.IOException

setAckRequest

protected void setAckRequest(boolean ackRequest)

setSequenceId

protected void setSequenceId(long sequenceId)

writeTo

protected boolean writeTo(java.nio.channels.GatheringByteChannel gatheringByteChannel)
                   throws java.io.IOException

Throws:

java.io.IOException