org.apache.zookeeper.server

Class DumbWatcher

java.lang.Object

org.apache.zookeeper.server.ServerCnxn

org.apache.zookeeper.server.DumbWatcher

All Implemented Interfaces:

Watcher

public class DumbWatcher
extends ServerCnxn

A empty watcher implementation used in bench and unit test.

Nested Class Summary

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

ServerCnxn.CloseRequestException, ServerCnxn.DisconnectReason, 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

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

Constructor Summary

Constructors

Constructor and Description
DumbWatcher()
DumbWatcher(long sessionId)

Method Summary

Modifier and Type	Method and Description
void	close(ServerCnxn.DisconnectReason reason)
Certificate[]	getClientCertificateChain()
int	getInterestOps()
long	getOutstandingRequests() The number of requests that have been submitted but not yet responded to.
InetSocketAddress	getRemoteSocketAddress()
long	getSessionId()
boolean	isSecure()
void	process(WatchedEvent event)
void	sendCloseSession()
int	sendResponse(ReplyHeader h, Record r, String tag, String cacheKey, Stat stat, int opCode) Serializes a ZooKeeper response and enqueues it for sending.
protected ServerStats	serverStats()
void	setClientCertificateChain(Certificate[] chain)

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

addAuthInfo, cleanupWriterSocket, decrOutstandingAndCheckThrottle, dumpConnectionInfo, getAuthInfo, getAvgLatency, getConnectionInfo, getEstablished, getHostAddress, getLastCxid, getLastLatency, getLastOperation, getLastResponseTime, getLastZxid, getMaxLatency, getMinLatency, getPacketsReceived, getPacketsSent, getSessionIdHex, incrOutstandingAndCheckThrottle, incrPacketsReceived, incrPacketsSent, isInvalid, isStale, isZKServerRunning, packetReceived, packetSent, removeAuthInfo, resetStats, sendResponse, serialize, serializeRecord, setInvalid, setStale, toString, updateStatsForResponse

Methods inherited from class java.lang.Object

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

Constructor Detail

DumbWatcher

public DumbWatcher()

DumbWatcher

public DumbWatcher(long sessionId)

Method Detail

process

public void process(WatchedEvent event)

Specified by:

process in interface Watcher

Specified by:

process in class ServerCnxn

close

public void close(ServerCnxn.DisconnectReason reason)

Specified by:

close in class ServerCnxn

sendResponse

public int sendResponse(ReplyHeader h,
                        Record r,
                        String tag,
                        String cacheKey,
                        Stat stat,
                        int opCode)
                 throws IOException

Description copied from class: ServerCnxn

Serializes a ZooKeeper response and enqueues it for sending. Serializes client response parts and enqueues them into outgoing queue. If both cache key and last modified zxid are provided, the serialized response is caсhed under the provided key, the last modified zxid is stored along with the value. A cache entry is invalidated if the provided last modified zxid is more recent than the stored one. Attention: this function is not thread safe, due to caching not being thread safe.

Specified by:

sendResponse in class ServerCnxn

Parameters:

h - reply header

r - reply payload, can be null

tag - Jute serialization tag, can be null

cacheKey - Key for caching the serialized payload. A null value prevents caching.

stat - Stat information for the the reply payload, used for cache invalidation. A value of 0 prevents caching.

opCode - The op code appertains to the corresponding request of the response, used to decide which cache (e.g. read response cache, list of children response cache, ...) object to look up to when applicable.

Throws:

IOException

sendCloseSession

public void sendCloseSession()

Specified by:

sendCloseSession in class ServerCnxn

getSessionId

public long getSessionId()

Specified by:

getSessionId in class ServerCnxn

serverStats

protected ServerStats serverStats()

Specified by:

serverStats in class ServerCnxn

getOutstandingRequests

public long getOutstandingRequests()

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

Overrides:

getOutstandingRequests in class ServerCnxn

getRemoteSocketAddress

public InetSocketAddress getRemoteSocketAddress()

Specified by:

getRemoteSocketAddress in class ServerCnxn

getInterestOps

public int getInterestOps()

Specified by:

getInterestOps 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