org.apache.zookeeper.server

Class NIOServerCnxn

java.lang.Object

org.apache.zookeeper.server.ServerCnxn

org.apache.zookeeper.server.NIOServerCnxn

All Implemented Interfaces:

Watcher

public class NIOServerCnxn
extends ServerCnxn

This class handles communication with clients using NIO. There is one per client, but only one thread doing the communication.

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.zookeeper.server.ServerCnxn

ServerCnxn.CloseRequestException, ServerCnxn.EndOfStreamException

Nested classes/interfaces inherited from interface org.apache.zookeeper.Watcher

Watcher.Event, Watcher.WatcherType

Field Summary

Fields inherited from class org.apache.zookeeper.server.ServerCnxn

authInfo, count, established, lastCxid, lastLatency, lastOp, lastResponseTime, lastZxid, maxLatency, me, minLatency, packetsReceived, packetsSent, totalLatency, zooKeeperSaslServer

Constructor Summary

Constructors

Constructor and Description
NIOServerCnxn(ZooKeeperServer zk, SocketChannel sock, SelectionKey sk, NIOServerCnxnFactory factory, org.apache.zookeeper.server.NIOServerCnxnFactory.SelectorThread selectorThread)

Method Summary

Modifier and Type	Method and Description
void	close() Close the cnxn and remove it from the factory cnxns list.
static void	closeSock(SocketChannel sock) Close resources associated with a sock.
void	disableRecv()
void	disableSelectable()
void	enableRecv()
void	enableSelectable()
Certificate[]	getClientCertificateChain()
int	getInterestOps()
long	getOutstandingRequests() The number of requests that have been submitted but not yet responded to.
InetSocketAddress	getRemoteSocketAddress()
long	getSessionId()
int	getSessionTimeout()
InetAddress	getSocketAddress()
protected void	incrOutstandingRequests(RequestHeader h)
boolean	isSecure()
boolean	isSelectable()
protected boolean	isSocketOpen() Only used in order to allow testing
void	process(WatchedEvent event)
void	sendBuffer(ByteBuffer bb) sendBuffer pushes a byte buffer onto the outgoing buffer queue for asynchronous writes.
void	sendCloseSession()
void	sendResponse(ReplyHeader h, Record r, String tag)
protected ServerStats	serverStats()
void	setClientCertificateChain(Certificate[] chain)
void	setSessionId(long sessionId)
void	setSessionTimeout(int sessionTimeout)
String	toString() Used by "dump" 4-letter command to list all connection in cnxnExpiryMap

Methods inherited from class org.apache.zookeeper.server.ServerCnxn

addAuthInfo, cleanupWriterSocket, dumpConnectionInfo, getAuthInfo, getAvgLatency, getConnectionInfo, getEstablished, getLastCxid, getLastLatency, getLastOperation, getLastResponseTime, getLastZxid, getMaxLatency, getMinLatency, getPacketsReceived, getPacketsSent, incrPacketsReceived, incrPacketsSent, packetReceived, packetSent, removeAuthInfo, resetStats, updateStatsForResponse

Methods inherited from class java.lang.Object

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

Constructor Detail

NIOServerCnxn

public NIOServerCnxn(ZooKeeperServer zk,
                     SocketChannel sock,
                     SelectionKey sk,
                     NIOServerCnxnFactory factory,
                     org.apache.zookeeper.server.NIOServerCnxnFactory.SelectorThread selectorThread)
              throws IOException

Throws:

IOException

Method Detail

sendCloseSession

public void sendCloseSession()

sendBuffer

public void sendBuffer(ByteBuffer bb)

sendBuffer pushes a byte buffer onto the outgoing buffer queue for asynchronous writes.

isSelectable

public boolean isSelectable()

disableSelectable

public void disableSelectable()

enableSelectable

public void enableSelectable()

isSocketOpen

protected boolean isSocketOpen()

Only used in order to allow testing

incrOutstandingRequests

protected void incrOutstandingRequests(RequestHeader h)

Overrides:

incrOutstandingRequests in class ServerCnxn

disableRecv

public void disableRecv()

enableRecv

public void enableRecv()

getOutstandingRequests

public long getOutstandingRequests()

The number of requests that have been submitted but not yet responded to.

Specified by:

getOutstandingRequests in class ServerCnxn

getSessionTimeout

public int getSessionTimeout()

toString

public String toString()

Used by "dump" 4-letter command to list all connection in cnxnExpiryMap

Overrides:

toString in class ServerCnxn

See Also:

for brief stats

close

public void close()

Close the cnxn and remove it from the factory cnxns list.

closeSock

public static void closeSock(SocketChannel sock)

Close resources associated with a sock.

sendResponse

public void sendResponse(ReplyHeader h,
                         Record r,
                         String tag)

Overrides:

sendResponse in class ServerCnxn

process

public void process(WatchedEvent event)

Specified by:

process in interface Watcher

Specified by:

process in class ServerCnxn

getSessionId

public long getSessionId()

Specified by:

getSessionId in class ServerCnxn

setSessionId

public void setSessionId(long sessionId)

setSessionTimeout

public void setSessionTimeout(int sessionTimeout)

getInterestOps

public int getInterestOps()

Specified by:

getInterestOps in class ServerCnxn

getRemoteSocketAddress

public InetSocketAddress getRemoteSocketAddress()

Specified by:

getRemoteSocketAddress in class ServerCnxn

getSocketAddress

public InetAddress getSocketAddress()

serverStats

protected ServerStats serverStats()

Specified by:

serverStats in class ServerCnxn

isSecure

public boolean isSecure()

Specified by:

isSecure in class ServerCnxn

getClientCertificateChain

public Certificate[] getClientCertificateChain()

Specified by:

getClientCertificateChain in class ServerCnxn

setClientCertificateChain

public void setClientCertificateChain(Certificate[] chain)

Specified by:

setClientCertificateChain in class ServerCnxn