Package org.jgroups.blocks.cs

Class NioConnection

java.lang.Object

org.jgroups.blocks.cs.Connection

org.jgroups.blocks.cs.NioConnection

All Implemented Interfaces:

Closeable, AutoCloseable

public class NioConnection
extends Connection

An NIO based impl of Connection

Since:

3.6.5

Field Summary

Fields

Modifier and Type	Field	Description
protected SocketChannel	channel
protected boolean	copy_on_partial_write
protected SelectionKey	key
protected final ByteBuffer	length_buf
protected int	partial_writes
protected Buffers	recv_buf
protected final Buffers	send_buf
protected final Lock	send_lock

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

cookie, last_access, peer_addr, server

Constructor Summary

Constructors

Constructor	Description
NioConnection(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	_read()
void	clearSelectionKey(int interest_ops)
void	close()
void	connect(Address dest)
protected void	connect(Address dest, boolean send_local_addr)
boolean	copyOnPartialWrite()
NioConnection	copyOnPartialWrite(boolean b)
void	flush()
protected static byte[]	getBuffer(ByteBuffer buf)
boolean	isClosed()
boolean	isConnected()
boolean	isConnectionPending()
SelectionKey	key()
NioConnection	key(SelectionKey k)
Address	localAddress()
protected ByteBuffer	makeLengthBuffer(int length)
int	numPartialWrites()
void	read()	Read the length first, then the actual data.
protected Address	readPeerAddress()
void	registerSelectionKey(int interest_ops)
void	send()
void	send(byte[] buf, int offset, int length)
void	send(ByteBuffer buf)	Sends a message.
protected void	send(ByteBuffer buf, boolean send_length)
protected void	sendLocalAddress(Address local_addr)
protected void	setSocketParameters(Socket client_sock)
void	start()
String	status()
String	toString()

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

getTimestamp, isExpired, peerAddress, updateLastAccessed

Methods inherited from class java.lang.Object

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

Field Details

channel

protected SocketChannel channel

key

protected SelectionKey key

send_buf

protected final Buffers send_buf

length_buf

protected final ByteBuffer length_buf

copy_on_partial_write

protected boolean copy_on_partial_write

partial_writes

protected int partial_writes

send_lock

protected final Lock send_lock

recv_buf

protected Buffers recv_buf

Constructor Details

NioConnection

public NioConnection(Address peer_addr,
 NioBaseServer server)
              throws Exception

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

Throws:

Exception

NioConnection

public NioConnection(SocketChannel channel,
 NioBaseServer server)
              throws Exception

Throws:

Exception

Method Details

isConnected

public boolean isConnected()

Specified by:

isConnected in class Connection

isConnectionPending

public boolean isConnectionPending()

Specified by:

isConnectionPending in class Connection

isClosed

public boolean isClosed()

Specified by:

isClosed in class Connection

localAddress

public Address localAddress()

Specified by:

localAddress in class Connection

key

public SelectionKey key()

key

public NioConnection key(SelectionKey k)

copyOnPartialWrite

public NioConnection copyOnPartialWrite(boolean b)

copyOnPartialWrite

public boolean copyOnPartialWrite()

numPartialWrites

public int numPartialWrites()

registerSelectionKey

public void registerSelectionKey(int interest_ops)

clearSelectionKey

public void clearSelectionKey(int interest_ops)

connect

public void connect(Address dest)
             throws Exception

Specified by:

connect in class Connection

Throws:

Exception

connect

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

Throws:

Exception

start

public void start()
           throws Exception

Specified by:

start in class Connection

Throws:

Exception

send

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

Specified by:

send in class Connection

Throws:

Exception

send

public void send(ByteBuffer buf)
          throws 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:

Exception

send

protected void send(ByteBuffer buf,
 boolean send_length)
             throws Exception

Throws:

Exception

send

public void send()
          throws Exception

Throws:

Exception

read

public void read()
          throws Exception

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

Throws:

Exception

_read

protected boolean _read()
                 throws Exception

Throws:

Exception

close

public void close()
           throws IOException

Throws:

IOException

flush

public void flush()

Specified by:

flush in class Connection

toString

public String toString()

Overrides:

toString in class Object

status

public String status()

Specified by:

status in class Connection

setSocketParameters

protected void setSocketParameters(Socket client_sock)
                            throws SocketException

Throws:

SocketException

sendLocalAddress

protected void sendLocalAddress(Address local_addr)
                         throws Exception

Throws:

Exception

readPeerAddress

protected Address readPeerAddress()
                           throws Exception

Throws:

Exception

getBuffer

protected static byte[] getBuffer(ByteBuffer buf)

makeLengthBuffer

protected ByteBuffer makeLengthBuffer(int length)