Package org.jgroups.blocks.cs

Class NioConnection

java.lang.Object

org.jgroups.blocks.cs.Connection

org.jgroups.blocks.cs.NioConnection

All Implemented Interfaces:

java.io.Closeable, java.lang.AutoCloseable

public class NioConnection
extends Connection

An NIO based impl of Connection

Since:

3.6.5

Author:

Bela Ban

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
protected class	NioConnection.Reader
protected static class	NioConnection.State

Field Summary

Fields

Modifier and Type	Field	Description
protected java.nio.channels.SocketChannel	channel
protected boolean	connected
protected boolean	copy_on_partial_write
protected java.nio.channels.SelectionKey	key
protected int	partial_writes
protected NioConnection.Reader	reader
protected long	reader_idle_time
protected Buffers	recv_buf
protected Buffers	send_buf
protected java.util.concurrent.locks.Lock	send_lock
protected NioBaseServer	server
protected boolean	write_interest_set

Fields inherited from class org.jgroups.blocks.cs.Connection

cookie, last_access, peer_addr

Constructor Summary

Constructors

Constructor	Description
NioConnection(java.nio.channels.SocketChannel channel, NioBaseServer server)
NioConnection(Address peer_addr, NioBaseServer server)	Creates a connection stub and binds it, use connect(Address) to connect

Method Summary

Modifier and Type	Method	Description
protected boolean	_receive(boolean update)
void	clearSelectionKey(int interest_ops)
void	close()
void	connect(Address dest)
protected void	connect(Address dest, boolean send_local_addr)
NioConnection	connected(boolean c)
boolean	copyOnPartialWrite()
NioConnection	copyOnPartialWrite(boolean b)
protected static byte[]	getBuffer(java.nio.ByteBuffer buf)
protected long	getTimestamp()
boolean	isConnected()
boolean	isConnectionPending()
boolean	isExpired(long now)
boolean	isOpen()
java.nio.channels.SelectionKey	key()
NioConnection	key(java.nio.channels.SelectionKey k)
Address	localAddress()
protected static java.nio.ByteBuffer	makeLengthBuffer(java.nio.ByteBuffer buf)
int	numPartialWrites()
Address	peerAddress()
long	readerIdleTime()
NioConnection	readerIdleTime(long t)
boolean	readerRunning()
protected Address	readPeerAddress()
void	receive()	Read the length first, then the actual data.
void	registerSelectionKey(int interest_ops)
void	send()
void	send(byte[] buf, int offset, int length)
void	send(java.nio.ByteBuffer buf)	Sends a message.
protected void	send(java.nio.ByteBuffer buf, boolean send_length)
protected void	sendLocalAddress(Address local_addr)
protected void	setSocketParameters(java.net.Socket client_sock)
void	start()
java.lang.String	status()
java.lang.String	toString()
protected void	updateLastAccessed()
protected void	writeInterest(boolean register)

Methods inherited from class java.lang.Object

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

Field Detail

channel

protected java.nio.channels.SocketChannel channel

key

protected java.nio.channels.SelectionKey key

server

protected final NioBaseServer server

send_buf

protected final Buffers send_buf

write_interest_set

protected boolean write_interest_set

copy_on_partial_write

protected boolean copy_on_partial_write

partial_writes

protected int partial_writes

send_lock

protected final java.util.concurrent.locks.Lock send_lock

recv_buf

protected Buffers recv_buf

reader

protected NioConnection.Reader reader

reader_idle_time

protected long reader_idle_time

connected

protected boolean connected

Constructor Detail

NioConnection

public NioConnection(Address peer_addr,
                     NioBaseServer server)
              throws java.lang.Exception

Creates a connection stub and binds it, use connect(Address) to connect

Throws:

java.lang.Exception

NioConnection

public NioConnection(java.nio.channels.SocketChannel channel,
                     NioBaseServer server)
              throws java.lang.Exception

Throws:

java.lang.Exception

Method Detail

isOpen

public boolean isOpen()

Specified by:

isOpen in class Connection

isConnected

public boolean isConnected()

Specified by:

isConnected in class Connection

isConnectionPending

public boolean isConnectionPending()

Specified by:

isConnectionPending in class Connection

isExpired

public boolean isExpired(long now)

Specified by:

isExpired in class Connection

updateLastAccessed

protected void updateLastAccessed()

localAddress

public Address localAddress()

Specified by:

localAddress in class Connection

peerAddress

public Address peerAddress()

Specified by:

peerAddress in class Connection

key

public java.nio.channels.SelectionKey key()

key

public NioConnection key(java.nio.channels.SelectionKey k)

copyOnPartialWrite

public NioConnection copyOnPartialWrite(boolean b)

copyOnPartialWrite

public boolean copyOnPartialWrite()

numPartialWrites

public int numPartialWrites()

readerIdleTime

public long readerIdleTime()

readerIdleTime

public NioConnection readerIdleTime(long t)

readerRunning

public boolean readerRunning()

connected

public NioConnection connected(boolean c)

registerSelectionKey

public void registerSelectionKey(int interest_ops)

clearSelectionKey

public void clearSelectionKey(int interest_ops)

connect

public void connect(Address dest)
             throws java.lang.Exception

Specified by:

connect in class Connection

Throws:

java.lang.Exception

connect

protected void connect(Address dest,
                       boolean send_local_addr)
                throws java.lang.Exception

Throws:

java.lang.Exception

start

public void start()
           throws java.lang.Exception

Specified by:

start in class Connection

Throws:

java.lang.Exception

send

public void send(byte[] buf,
                 int offset,
                 int length)
          throws java.lang.Exception

Specified by:

send in class Connection

Throws:

java.lang.Exception

send

public void send(java.nio.ByteBuffer buf)
          throws java.lang.Exception

Sends a message. If the previous write didn't complete, tries to complete it. If this still doesn't complete, the message is dropped (needs to be retransmitted, e.g. by UNICAST3 or NAKACK2).

Specified by:

send in class Connection

Parameters:

buf -

Throws:

java.lang.Exception

send

public void send()
          throws java.lang.Exception

Throws:

java.lang.Exception

receive

public void receive()
             throws java.lang.Exception

Read the length first, then the actual data. This method is not reentrant and access must be synchronized

Throws:

java.lang.Exception

send

protected void send(java.nio.ByteBuffer buf,
                    boolean send_length)
             throws java.lang.Exception

Throws:

java.lang.Exception

_receive

protected boolean _receive(boolean update)
                    throws java.lang.Exception

Throws:

java.lang.Exception

close

public void close()
           throws java.io.IOException

Throws:

java.io.IOException

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

status

public java.lang.String status()

Specified by:

status in class Connection

getTimestamp

protected long getTimestamp()

writeInterest

protected void writeInterest(boolean register)

setSocketParameters

protected void setSocketParameters(java.net.Socket client_sock)
                            throws java.net.SocketException

Throws:

java.net.SocketException

sendLocalAddress

protected void sendLocalAddress(Address local_addr)
                         throws java.lang.Exception

Throws:

java.lang.Exception

readPeerAddress

protected Address readPeerAddress()
                           throws java.lang.Exception

Throws:

java.lang.Exception

getBuffer

protected static byte[] getBuffer(java.nio.ByteBuffer buf)

makeLengthBuffer

protected static java.nio.ByteBuffer makeLengthBuffer(java.nio.ByteBuffer buf)