Package net.spy.memcached

Class MemcachedNodeROImpl

java.lang.Object

net.spy.memcached.MemcachedNodeROImpl

All Implemented Interfaces:

MemcachedNode

public class MemcachedNodeROImpl
extends Object
implements MemcachedNode

Constructor Summary

Constructors

Constructor	Description
MemcachedNodeROImpl(MemcachedNode n)

Method Summary

Modifier and Type	Method	Description
void	addOp(Operation op)	Add an operation to the queue.
void	authComplete()	Let the node know that auth is complete.
void	completedRead()	Notify node of successful read.
void	connected()	Notify this node that it has reconnected.
void	copyInputQueue()	Move all of the operations delivered via addOperation into the internal write queue.
ByteBuffer	decryptNextTLSDataRecord(ByteBuffer rbuf)	Convert the encrypted data record that received from this node to plain text data.
Collection<Operation>	destroyInputQueue()	Extract all queued items for this node destructively.
boolean	doTlsHandshake(long timeoutInMillis)	Do handshake for connecting to this node when TLS enabled.
void	fillWriteBuffer(boolean optimizeGets)	Fill the write buffer with data from the next operations in the queue.
void	fixupOps()	Fix up the selection ops on the selection key.
int	getBytesRemainingToWrite()	Get the number of bytes remaining to write.
SocketChannel	getChannel()	Get the SocketChannel for this connection.
MemcachedConnection	getConnection()
int	getContinuousTimeout()
Operation	getCurrentReadOp()	Get the operation at the top of the queue that is requiring input.
Operation	getCurrentWriteOp()	Get the operation at the top of the queue that has information available to write.
NodeEndPoint	getNodeEndPoint()	Get NodeEndPoint
ByteBuffer	getRbuf()	Get the buffer used for reading data from this node.
int	getReconnectCount()	Get the current reconnect count.
int	getSelectionOps()	Compute the appropriate selection operations for the channel this MemcachedNode holds to the server.
SelectionKey	getSk()	Get the selection key from this node.
SocketAddress	getSocketAddress()	Get the SocketAddress of the server to which this node is connected.
ByteBuffer	getWbuf()	Get the buffer used for writing data to this node.
boolean	hasReadOp()	True if an operation is available to read.
boolean	hasWriteOp()	True if an operation is available to write.
void	insertOp(Operation op)	Insert an operation to the beginning of the queue.
boolean	isActive()	True if this node is active. i.e.
boolean	isAuthenticated()	True if this node is authenticated.
long	lastReadDelta()	Milliseconds since last successful read.
void	reconnecting()	Notify this node that it will be reconnecting.
void	registerChannel(SocketChannel ch, SelectionKey selectionKey)	Register a channel with this node.
Operation	removeCurrentReadOp()	Remove the operation at the top of the queue that is requiring input.
Operation	removeCurrentWriteOp()	Remove the operation at the top of the queue that has information available to write.
void	setChannel(SocketChannel to)	Set the SocketChannel this node uses.
void	setConnection(MemcachedConnection connection)
void	setContinuousTimeout(boolean isIncrease)	Count 'time out' exceptions to drop connections that fail perpetually.
void	setNodeEndPoint(NodeEndPoint endPoint)	Set NodeEndPoint
void	setSk(SelectionKey to)	Set the selection key for this node.
void	setupForAuth()	Tell a node to set up for authentication.
void	setupResend()	Clear the queue of currently processing operations by either cancelling them or setting them up to be reapplied after a reconnect.
String	toString()
void	transitionWriteItem()	Transition the current write item into a read state.
int	writeSome()	Write some bytes and return the number of bytes written.

Methods inherited from class java.lang.Object

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

Constructor Details

MemcachedNodeROImpl

public MemcachedNodeROImpl(MemcachedNode n)

Method Details

toString

public String toString()

Overrides:

toString in class Object

addOp

public void addOp(Operation op)

Description copied from interface: MemcachedNode

Add an operation to the queue. Authentication operations should never be added to the queue, but this is not checked.

Specified by:

addOp in interface MemcachedNode

insertOp

public void insertOp(Operation op)

Description copied from interface: MemcachedNode

Insert an operation to the beginning of the queue. This method is meant to be invoked rarely.

Specified by:

insertOp in interface MemcachedNode

connected

public void connected()

Description copied from interface: MemcachedNode

Notify this node that it has reconnected.

Specified by:

connected in interface MemcachedNode

copyInputQueue

public void copyInputQueue()

Description copied from interface: MemcachedNode

Move all of the operations delivered via addOperation into the internal write queue.

Specified by:

copyInputQueue in interface MemcachedNode

fillWriteBuffer

public void fillWriteBuffer(boolean optimizeGets)
                     throws IOException

Description copied from interface: MemcachedNode

Fill the write buffer with data from the next operations in the queue.

Specified by:

fillWriteBuffer in interface MemcachedNode

Parameters:

optimizeGets - if true, combine sequential gets into a single multi-key get

Throws:

IOException

fixupOps

public void fixupOps()

Description copied from interface: MemcachedNode

Fix up the selection ops on the selection key.

Specified by:

fixupOps in interface MemcachedNode

getBytesRemainingToWrite

public int getBytesRemainingToWrite()

Description copied from interface: MemcachedNode

Get the number of bytes remaining to write.

Specified by:

getBytesRemainingToWrite in interface MemcachedNode

getChannel

public SocketChannel getChannel()

Description copied from interface: MemcachedNode

Get the SocketChannel for this connection.

Specified by:

getChannel in interface MemcachedNode

getCurrentReadOp

public Operation getCurrentReadOp()

Description copied from interface: MemcachedNode

Get the operation at the top of the queue that is requiring input.

Specified by:

getCurrentReadOp in interface MemcachedNode

getCurrentWriteOp

public Operation getCurrentWriteOp()

Description copied from interface: MemcachedNode

Get the operation at the top of the queue that has information available to write.

Specified by:

getCurrentWriteOp in interface MemcachedNode

getRbuf

public ByteBuffer getRbuf()

Description copied from interface: MemcachedNode

Get the buffer used for reading data from this node.

Specified by:

getRbuf in interface MemcachedNode

getReconnectCount

public int getReconnectCount()

Description copied from interface: MemcachedNode

Get the current reconnect count.

Specified by:

getReconnectCount in interface MemcachedNode

getSelectionOps

public int getSelectionOps()

Description copied from interface: MemcachedNode

Compute the appropriate selection operations for the channel this MemcachedNode holds to the server.

Specified by:

getSelectionOps in interface MemcachedNode

getSk

public SelectionKey getSk()

Description copied from interface: MemcachedNode

Get the selection key from this node.

Specified by:

getSk in interface MemcachedNode

getSocketAddress

public SocketAddress getSocketAddress()

Description copied from interface: MemcachedNode

Get the SocketAddress of the server to which this node is connected.

Specified by:

getSocketAddress in interface MemcachedNode

getNodeEndPoint

public NodeEndPoint getNodeEndPoint()

Description copied from interface: MemcachedNode

Get NodeEndPoint

Specified by:

getNodeEndPoint in interface MemcachedNode

Returns:

setNodeEndPoint

public void setNodeEndPoint(NodeEndPoint endPoint)

Description copied from interface: MemcachedNode

Set NodeEndPoint

Specified by:

setNodeEndPoint in interface MemcachedNode

doTlsHandshake

public boolean doTlsHandshake(long timeoutInMillis)
                       throws IOException

Description copied from interface: MemcachedNode

Do handshake for connecting to this node when TLS enabled.

Specified by:

doTlsHandshake in interface MemcachedNode

Returns:

true if handshake is successful, false if handshake is unsuccessful.

Throws:

IOException

decryptNextTLSDataRecord

public ByteBuffer decryptNextTLSDataRecord(ByteBuffer rbuf)
                                    throws IOException

Description copied from interface: MemcachedNode

Convert the encrypted data record that received from this node to plain text data.

Specified by:

decryptNextTLSDataRecord in interface MemcachedNode

Returns:

buffer contains plain text data.

Throws:

IOException

getWbuf

public ByteBuffer getWbuf()

Description copied from interface: MemcachedNode

Get the buffer used for writing data to this node.

Specified by:

getWbuf in interface MemcachedNode

hasReadOp

public boolean hasReadOp()

Description copied from interface: MemcachedNode

True if an operation is available to read.

Specified by:

hasReadOp in interface MemcachedNode

hasWriteOp

public boolean hasWriteOp()

Description copied from interface: MemcachedNode

True if an operation is available to write.

Specified by:

hasWriteOp in interface MemcachedNode

isActive

public boolean isActive()

Description copied from interface: MemcachedNode

True if this node is active. i.e. is is currently connected and expected to be able to process requests

Specified by:

isActive in interface MemcachedNode

reconnecting

public void reconnecting()

Description copied from interface: MemcachedNode

Notify this node that it will be reconnecting.

Specified by:

reconnecting in interface MemcachedNode

registerChannel

public void registerChannel(SocketChannel ch,
 SelectionKey selectionKey)

Description copied from interface: MemcachedNode

Register a channel with this node.

Specified by:

registerChannel in interface MemcachedNode

removeCurrentReadOp

public Operation removeCurrentReadOp()

Description copied from interface: MemcachedNode

Remove the operation at the top of the queue that is requiring input.

Specified by:

removeCurrentReadOp in interface MemcachedNode

removeCurrentWriteOp

public Operation removeCurrentWriteOp()

Description copied from interface: MemcachedNode

Remove the operation at the top of the queue that has information available to write.

Specified by:

removeCurrentWriteOp in interface MemcachedNode

setChannel

public void setChannel(SocketChannel to)

Description copied from interface: MemcachedNode

Set the SocketChannel this node uses.

Specified by:

setChannel in interface MemcachedNode

setSk

public void setSk(SelectionKey to)

Description copied from interface: MemcachedNode

Set the selection key for this node.

Specified by:

setSk in interface MemcachedNode

setupResend

public void setupResend()

Description copied from interface: MemcachedNode

Clear the queue of currently processing operations by either cancelling them or setting them up to be reapplied after a reconnect.

Specified by:

setupResend in interface MemcachedNode

transitionWriteItem

public void transitionWriteItem()

Description copied from interface: MemcachedNode

Transition the current write item into a read state.

Specified by:

transitionWriteItem in interface MemcachedNode

writeSome

public int writeSome()
              throws IOException

Description copied from interface: MemcachedNode

Write some bytes and return the number of bytes written.

Specified by:

writeSome in interface MemcachedNode

Returns:

the number of bytes written

Throws:

IOException - if there's a problem writing

destroyInputQueue

public Collection<Operation> destroyInputQueue()

Description copied from interface: MemcachedNode

Extract all queued items for this node destructively. This is useful for redistributing items.

Specified by:

destroyInputQueue in interface MemcachedNode

authComplete

public void authComplete()

Description copied from interface: MemcachedNode

Let the node know that auth is complete. Typically this would mean the node can start processing and accept new operations to its input queue.

Specified by:

authComplete in interface MemcachedNode

setupForAuth

public void setupForAuth()

Description copied from interface: MemcachedNode

Tell a node to set up for authentication. Typically this would mean blocking additions to the queue. In a reconnect situation this may mean putting any queued operations on hold to get to an auth complete state.

Specified by:

setupForAuth in interface MemcachedNode

getContinuousTimeout

public int getContinuousTimeout()

Specified by:

getContinuousTimeout in interface MemcachedNode

setContinuousTimeout

public void setContinuousTimeout(boolean isIncrease)

Description copied from interface: MemcachedNode

Count 'time out' exceptions to drop connections that fail perpetually.

Specified by:

setContinuousTimeout in interface MemcachedNode

Parameters:

isIncrease -

isAuthenticated

public boolean isAuthenticated()

Description copied from interface: MemcachedNode

True if this node is authenticated.

Specified by:

isAuthenticated in interface MemcachedNode

lastReadDelta

public long lastReadDelta()

Description copied from interface: MemcachedNode

Milliseconds since last successful read.

Specified by:

lastReadDelta in interface MemcachedNode

completedRead

public void completedRead()

Description copied from interface: MemcachedNode

Notify node of successful read. This is used so the node can keep track of any internal debugging or state it cares about on read.

Specified by:

completedRead in interface MemcachedNode

getConnection

public MemcachedConnection getConnection()

Specified by:

getConnection in interface MemcachedNode

setConnection

public void setConnection(MemcachedConnection connection)

Specified by:

setConnection in interface MemcachedNode