org.apache.catalina.ha.session
Class DeltaManager

java.lang.Object
  org.apache.catalina.util.LifecycleBase
      org.apache.catalina.util.LifecycleMBeanBase
          org.apache.catalina.session.ManagerBase
              org.apache.catalina.ha.session.ClusterManagerBase
                  org.apache.catalina.ha.session.DeltaManager

All Implemented Interfaces:

PropertyChangeListener, EventListener, MBeanRegistration, ClusterManager, Lifecycle, Manager

public class DeltaManager
extends ClusterManagerBase

The DeltaManager manages replicated sessions by only replicating the deltas in data. For applications written to handle this, the DeltaManager is the optimal way of replicating data. This code is almost identical to StandardManager with a difference in how it persists sessions and some modifications to it. IMPLEMENTATION NOTE : Correct behavior of session storing and reloading depends upon external calls to the start() and stop() methods of this class at the correct times.

Version:

$Id: DeltaManager.java 1436252 2013-01-21 10:06:33Z kfujino $

Author:

Filip Hanik, Craig R. McClanahan, Jean-Francois Arcand, Peter Rossbach

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.catalina.session.ManagerBase

ManagerBase.SessionTiming

Field Summary

static Log	log
protected static String	managerName The descriptive name of this Manager implementation (for logging).
protected String	name
protected static StringManager	sm The string manager for this package.

Fields inherited from class org.apache.catalina.ha.session.ClusterManagerBase

cluster

Fields inherited from class org.apache.catalina.session.ManagerBase

container, distributable, duplicates, expiredSessions, maxActive, maxActiveSessions, maxInactiveInterval, processExpiresFrequency, processingTime, rejectedSessions, secureRandomAlgorithm, secureRandomClass, secureRandomProvider, sessionCounter, sessionCreationTiming, sessionExpirationTiming, sessionIdGenerator, sessionIdLength, sessionMaxAliveTime, sessions, support, TIMING_STATS_CACHE_SIZE

Fields inherited from class org.apache.catalina.util.LifecycleMBeanBase

mserver

Fields inherited from interface org.apache.catalina.Lifecycle

AFTER_DESTROY_EVENT, AFTER_INIT_EVENT, AFTER_START_EVENT, AFTER_STOP_EVENT, BEFORE_DESTROY_EVENT, BEFORE_INIT_EVENT, BEFORE_START_EVENT, BEFORE_STOP_EVENT, CONFIGURE_START_EVENT, CONFIGURE_STOP_EVENT, PERIODIC_EVENT, START_EVENT, STOP_EVENT

Constructor Summary

DeltaManager()

Method Summary

void	changeSessionId(Session session) Change the session ID of the current session to a new randomly generated session ID.
void	changeSessionId(Session session, boolean notify)
protected boolean	checkSenderDomain(SessionMessage msg, Member sender) Test that sender and local domain is the same
ClusterManager	cloneFromTemplate()
Session	createEmptySession() Create DeltaSession
Session	createSession(String sessionId) Construct and return a new session object, based on the default settings specified by this Manager's properties.
Session	createSession(String sessionId, boolean distribute) create new session with check maxActiveSessions and send session creation to other cluster nodes.
protected DeltaRequest	deserializeDeltaRequest(DeltaSession session, byte[] data) Load Deltarequest from external node Load the Class at container classloader
protected String	deserializeSessionId(byte[] data) Load sessionID
protected void	deserializeSessions(byte[] data) Load sessions from other cluster node.
void	expireAllLocalSessions() Expire all find sessions.
protected Member	findSessionMasterMember() Find the master of the session state
void	getAllClusterSessions() get from first session master the backup from all clustered sessions
int	getCounterNoStateTransfered()
long	getCounterReceive_EVT_ALL_SESSION_DATA()
long	getCounterReceive_EVT_ALL_SESSION_NOCONTEXTMANAGER()
int	getCounterReceive_EVT_ALL_SESSION_TRANSFERCOMPLETE()
long	getCounterReceive_EVT_CHANGE_SESSION_ID()
long	getCounterReceive_EVT_GET_ALL_SESSIONS()
long	getCounterReceive_EVT_SESSION_ACCESSED()
long	getCounterReceive_EVT_SESSION_CREATED()
long	getCounterReceive_EVT_SESSION_DELTA()
long	getCounterReceive_EVT_SESSION_EXPIRED()
long	getCounterSend_EVT_ALL_SESSION_DATA()
int	getCounterSend_EVT_ALL_SESSION_TRANSFERCOMPLETE()
long	getCounterSend_EVT_CHANGE_SESSION_ID()
long	getCounterSend_EVT_GET_ALL_SESSIONS()
long	getCounterSend_EVT_SESSION_ACCESSED()
long	getCounterSend_EVT_SESSION_CREATED()
long	getCounterSend_EVT_SESSION_DELTA()
long	getCounterSend_EVT_SESSION_EXPIRED()
String	getInfo() Return descriptive information about this Manager implementation and the corresponding version number, in the format <description>/<version>.
String[]	getInvalidatedSessions() When the manager expires session not tied to a request.
String	getName() Return the descriptive short name of this Manager implementation.
protected DeltaSession	getNewDeltaSession() Get new session class to be used in the doLoad() method.
long	getProcessingTime()
int	getReceivedQueueSize()
int	getSendAllSessionsSize()
int	getSendAllSessionsWaitTime()
long	getSessionReplaceCounter()
boolean	getStateTransfered() is session state transfered complete?
int	getStateTransferTimeout()
protected void	handleALL_SESSION_DATA(SessionMessage msg, Member sender) handle receive sessions from other not ( restart )
protected void	handleALL_SESSION_NOCONTEXTMANAGER(SessionMessage msg, Member sender) handle receive no context manager.
protected void	handleALL_SESSION_TRANSFERCOMPLETE(SessionMessage msg, Member sender) handle receive session state is complete transfered
protected void	handleCHANGE_SESSION_ID(SessionMessage msg, Member sender) handle receive change sessionID at other node
protected void	handleGET_ALL_SESSIONS(SessionMessage msg, Member sender) handle receive that other node want all sessions ( restart ) a) send all sessions with one message b) send session at blocks After sending send state is complete transfered
protected void	handleSESSION_ACCESSED(SessionMessage msg, Member sender) handle receive session is access at other node ( primary session is now false)
protected void	handleSESSION_CREATED(SessionMessage msg, Member sender) handle receive new session is created at other node (create backup - primary false)
protected void	handleSESSION_DELTA(SessionMessage msg, Member sender) handle receive session delta
protected void	handleSESSION_EXPIRED(SessionMessage msg, Member sender) handle receive session is expire at other node ( expire session also here)
boolean	isExpireSessionsOnShutdown()
boolean	isNoContextManagerReceived()
boolean	isNotifyContainerListenersOnReplication()
boolean	isNotifySessionListenersOnReplication()
boolean	isSendAllSessions()
boolean	isStateTimestampDrop()
void	messageDataReceived(ClusterMessage cmsg) A message was received from another node, this is the callback method to implement if you are interested in receiving replication messages.
protected void	messageReceived(SessionMessage msg, Member sender) This method is called by the received thread when a SessionMessage has been received from one of the other nodes in the cluster.
protected void	registerSessionAtReplicationValve(DeltaSession session) Register cross context session at replication valve thread local
ClusterMessage	requestCompleted(String sessionId) When the request has been completed, the replication valve will notify the manager, and the manager will decide whether any replication is needed or not.
ClusterMessage	requestCompleted(String sessionId, boolean expires) When the request has been completed, the replication valve will notify the manager, and the manager will decide whether any replication is needed or not.
void	resetStatistics() Reset manager statistics
protected void	send(SessionMessage msg) Send messages to other backup member (domain or all)
protected void	sendCreateSession(String sessionId, DeltaSession session) Send create session evt to all backup node
protected void	sendSessions(Member sender, Session[] currentSessions, long sendTimestamp) send a block of session to sender
protected byte[]	serializeDeltaRequest(DeltaSession session, DeltaRequest deltaRequest) serialize DeltaRequest
protected byte[]	serializeSessionId(String sessionId) serialize sessionID
protected byte[]	serializeSessions(Session[] currentSessions) Save any currently active sessions in the appropriate persistence mechanism, if any.
protected void	sessionExpired(String id) send session expired to other cluster nodes
void	setExpireSessionsOnShutdown(boolean expireSessionsOnShutdown)
void	setName(String name) Set the name of the manager, at host /context name and at engine hostname+/context
void	setNoContextManagerReceived(boolean noContextManagerReceived)
void	setNotifyContainerListenersOnReplication(boolean notifyContainerListenersOnReplication)
void	setNotifySessionListenersOnReplication(boolean notifyListenersCreateSessionOnReplication)
void	setSendAllSessions(boolean sendAllSessions)
void	setSendAllSessionsSize(int sendAllSessionsSize)
void	setSendAllSessionsWaitTime(int sendAllSessionsWaitTime)
void	setStateTimestampDrop(boolean isTimestampDrop)
void	setStateTransfered(boolean stateTransfered) set that state ist complete transfered
void	setStateTransferTimeout(int timeoutAllSession)
protected void	startInternal() Start this component and implement the requirements of LifecycleBase.startInternal().
protected void	stopInternal() Stop this component and implement the requirements of LifecycleBase.stopInternal().
protected void	waitForSendAllSessions(long beforeSendTime) Wait that cluster session state is transfer or timeout after 60 Sec With stateTransferTimeout == -1 wait that backup is transfered (forever mode)

Methods inherited from class org.apache.catalina.ha.session.ClusterManagerBase

clone, getClassLoaders, getClassLoaders, getCluster, getReplicationStream, getReplicationStream, getSessionAttributeFilter, isNotifyListenersOnReplication, load, setCluster, setNotifyListenersOnReplication, setSessionAttributeFilter, unload, willAttributeDistribute

Methods inherited from class org.apache.catalina.session.ManagerBase

add, addPropertyChangeListener, backgroundProcess, expireSession, findSession, findSessions, generateSessionId, getActiveSessions, getClassName, getContainer, getCreationTime, getCreationTimestamp, getDistributable, getDomainInternal, getDuplicates, getEngine, getExpiredSessions, getJvmRoute, getLastAccessedTime, getLastAccessedTimestamp, getMaxActive, getMaxActiveSessions, getMaxInactiveInterval, getNewSession, getObjectNameKeyProperties, getProcessExpiresFrequency, getRejectedSessions, getSecureRandomAlgorithm, getSecureRandomClass, getSecureRandomProvider, getSession, getSessionAttribute, getSessionAverageAliveTime, getSessionCounter, getSessionCreateRate, getSessionExpireRate, getSessionIdLength, getSessionMaxAliveTime, getThisAccessedTime, getThisAccessedTimestamp, initInternal, listSessionIds, processExpires, propertyChange, remove, remove, removePropertyChangeListener, setContainer, setDistributable, setDuplicates, setExpiredSessions, setMaxActive, setMaxActiveSessions, setMaxInactiveInterval, setProcessExpiresFrequency, setProcessingTime, setSecureRandomAlgorithm, setSecureRandomClass, setSecureRandomProvider, setSessionCounter, setSessionIdLength, setSessionMaxAliveTime, toString, updateSessionMaxAliveTime

Methods inherited from class org.apache.catalina.util.LifecycleMBeanBase

destroyInternal, getDomain, getObjectName, postDeregister, postRegister, preDeregister, preRegister, register, setDomain, unregister

Methods inherited from class org.apache.catalina.util.LifecycleBase

addLifecycleListener, destroy, findLifecycleListeners, fireLifecycleEvent, getState, getStateName, init, removeLifecycleListener, setState, setState, start, stop

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.catalina.Manager

add, addPropertyChangeListener, backgroundProcess, findSession, findSessions, getActiveSessions, getContainer, getDistributable, getExpiredSessions, getMaxActive, getMaxInactiveInterval, getRejectedSessions, getSessionAverageAliveTime, getSessionCounter, getSessionCreateRate, getSessionExpireRate, getSessionIdLength, getSessionMaxAliveTime, remove, remove, removePropertyChangeListener, setContainer, setDistributable, setExpiredSessions, setMaxActive, setMaxInactiveInterval, setSessionCounter, setSessionIdLength, setSessionMaxAliveTime

Field Detail

log

public static final Log log

sm

protected static final StringManager sm

The string manager for this package.

managerName

protected static String managerName

The descriptive name of this Manager implementation (for logging).

name

protected String name

Constructor Detail

DeltaManager

public DeltaManager()

Method Detail

getInfo

public String getInfo()

Return descriptive information about this Manager implementation and the corresponding version number, in the format <description>/<version>.

Specified by:

getInfo in interface Manager

Overrides:

getInfo in class ManagerBase

setName

public void setName(String name)

Description copied from interface: ClusterManager

Set the name of the manager, at host /context name and at engine hostname+/context

getName

public String getName()

Return the descriptive short name of this Manager implementation.

Specified by:

getName in interface ClusterManager

Overrides:

getName in class ManagerBase

Returns:

String

getCounterSend_EVT_GET_ALL_SESSIONS

public long getCounterSend_EVT_GET_ALL_SESSIONS()

Returns:

Returns the counterSend_EVT_GET_ALL_SESSIONS.

getCounterSend_EVT_SESSION_ACCESSED

public long getCounterSend_EVT_SESSION_ACCESSED()

Returns:

Returns the counterSend_EVT_SESSION_ACCESSED.

getCounterSend_EVT_SESSION_CREATED

public long getCounterSend_EVT_SESSION_CREATED()

Returns:

Returns the counterSend_EVT_SESSION_CREATED.

getCounterSend_EVT_SESSION_DELTA

public long getCounterSend_EVT_SESSION_DELTA()

Returns:

Returns the counterSend_EVT_SESSION_DELTA.

getCounterSend_EVT_SESSION_EXPIRED

public long getCounterSend_EVT_SESSION_EXPIRED()

Returns:

Returns the counterSend_EVT_SESSION_EXPIRED.

getCounterSend_EVT_ALL_SESSION_DATA

public long getCounterSend_EVT_ALL_SESSION_DATA()

Returns:

Returns the counterSend_EVT_ALL_SESSION_DATA.

getCounterSend_EVT_ALL_SESSION_TRANSFERCOMPLETE

public int getCounterSend_EVT_ALL_SESSION_TRANSFERCOMPLETE()

Returns:

Returns the counterSend_EVT_ALL_SESSION_TRANSFERCOMPLETE.

getCounterSend_EVT_CHANGE_SESSION_ID

public long getCounterSend_EVT_CHANGE_SESSION_ID()

Returns:

Returns the counterSend_EVT_CHANGE_SESSION_ID.

getCounterReceive_EVT_ALL_SESSION_DATA

public long getCounterReceive_EVT_ALL_SESSION_DATA()

Returns:

Returns the counterReceive_EVT_ALL_SESSION_DATA.

getCounterReceive_EVT_GET_ALL_SESSIONS

public long getCounterReceive_EVT_GET_ALL_SESSIONS()

Returns:

Returns the counterReceive_EVT_GET_ALL_SESSIONS.

getCounterReceive_EVT_SESSION_ACCESSED

public long getCounterReceive_EVT_SESSION_ACCESSED()

Returns:

Returns the counterReceive_EVT_SESSION_ACCESSED.

getCounterReceive_EVT_SESSION_CREATED

public long getCounterReceive_EVT_SESSION_CREATED()

Returns:

Returns the counterReceive_EVT_SESSION_CREATED.

getCounterReceive_EVT_SESSION_DELTA

public long getCounterReceive_EVT_SESSION_DELTA()

Returns:

Returns the counterReceive_EVT_SESSION_DELTA.

getCounterReceive_EVT_SESSION_EXPIRED

public long getCounterReceive_EVT_SESSION_EXPIRED()

Returns:

Returns the counterReceive_EVT_SESSION_EXPIRED.

getCounterReceive_EVT_ALL_SESSION_TRANSFERCOMPLETE

public int getCounterReceive_EVT_ALL_SESSION_TRANSFERCOMPLETE()

Returns:

Returns the counterReceive_EVT_ALL_SESSION_TRANSFERCOMPLETE.

getCounterReceive_EVT_CHANGE_SESSION_ID

public long getCounterReceive_EVT_CHANGE_SESSION_ID()

Returns:

Returns the counterReceive_EVT_CHANGE_SESSION_ID.

getCounterReceive_EVT_ALL_SESSION_NOCONTEXTMANAGER

public long getCounterReceive_EVT_ALL_SESSION_NOCONTEXTMANAGER()

Returns:

Returns the counterReceive_EVT_ALL_SESSION_NOCONTEXTMANAGER.

getProcessingTime

public long getProcessingTime()

Overrides:

getProcessingTime in class ManagerBase

Returns:

Returns the processingTime.

getSessionReplaceCounter

public long getSessionReplaceCounter()

Returns:

Returns the sessionReplaceCounter.

getCounterNoStateTransfered

public int getCounterNoStateTransfered()

Returns:

Returns the counterNoStateTransfered.

getReceivedQueueSize

public int getReceivedQueueSize()

getStateTransferTimeout

public int getStateTransferTimeout()

Returns:

Returns the stateTransferTimeout.

setStateTransferTimeout

public void setStateTransferTimeout(int timeoutAllSession)

Parameters:

timeoutAllSession - The timeout

getStateTransfered

public boolean getStateTransfered()

is session state transfered complete?

setStateTransfered

public void setStateTransfered(boolean stateTransfered)

set that state ist complete transfered

Parameters:

stateTransfered -

isNoContextManagerReceived

public boolean isNoContextManagerReceived()

setNoContextManagerReceived

public void setNoContextManagerReceived(boolean noContextManagerReceived)

getSendAllSessionsWaitTime

public int getSendAllSessionsWaitTime()

Returns:

Returns the sendAllSessionsWaitTime in msec

setSendAllSessionsWaitTime

public void setSendAllSessionsWaitTime(int sendAllSessionsWaitTime)

Parameters:

sendAllSessionsWaitTime - The sendAllSessionsWaitTime to set at msec.

isStateTimestampDrop

public boolean isStateTimestampDrop()

Returns:

Returns the stateTimestampDrop.

setStateTimestampDrop

public void setStateTimestampDrop(boolean isTimestampDrop)

Parameters:

isTimestampDrop - The new flag value

isSendAllSessions

public boolean isSendAllSessions()

Returns:

Returns the sendAllSessions.

setSendAllSessions

public void setSendAllSessions(boolean sendAllSessions)

Parameters:

sendAllSessions - The sendAllSessions to set.

getSendAllSessionsSize

public int getSendAllSessionsSize()

Returns:

Returns the sendAllSessionsSize.

setSendAllSessionsSize

public void setSendAllSessionsSize(int sendAllSessionsSize)

Parameters:

sendAllSessionsSize - The sendAllSessionsSize to set.

isNotifySessionListenersOnReplication

public boolean isNotifySessionListenersOnReplication()

Returns:

Returns the notifySessionListenersOnReplication.

setNotifySessionListenersOnReplication

public void setNotifySessionListenersOnReplication(boolean notifyListenersCreateSessionOnReplication)

Parameters:

notifyListenersCreateSessionOnReplication - The notifySessionListenersOnReplication to set.

isExpireSessionsOnShutdown

public boolean isExpireSessionsOnShutdown()

setExpireSessionsOnShutdown

public void setExpireSessionsOnShutdown(boolean expireSessionsOnShutdown)

isNotifyContainerListenersOnReplication

public boolean isNotifyContainerListenersOnReplication()

setNotifyContainerListenersOnReplication

public void setNotifyContainerListenersOnReplication(boolean notifyContainerListenersOnReplication)

createSession

public Session createSession(String sessionId)

Construct and return a new session object, based on the default settings specified by this Manager's properties. The session id will be assigned by this method, and available via the getId() method of the returned session. If a new session cannot be created for any reason, return null.

Specified by:

createSession in interface Manager

Overrides:

createSession in class ManagerBase

Parameters:

sessionId - The session id which should be used to create the new session; if null, a new session id will be generated

Throws:

IllegalStateException - if a new session cannot be instantiated for any reason Construct and return a new session object, based on the default settings specified by this Manager's properties. The session id will be assigned by this method, and available via the getId() method of the returned session. If a new session cannot be created for any reason, return null.

IllegalStateException - if a new session cannot be instantiated for any reason

createSession

public Session createSession(String sessionId,
                             boolean distribute)

create new session with check maxActiveSessions and send session creation to other cluster nodes.

Parameters:

distribute -

Returns:

The session

sendCreateSession

protected void sendCreateSession(String sessionId,
                                 DeltaSession session)

Send create session evt to all backup node

Parameters:

sessionId -

session -

send

protected void send(SessionMessage msg)

Send messages to other backup member (domain or all)

Parameters:

msg - Session message

createEmptySession

public Session createEmptySession()

Create DeltaSession

Specified by:

createEmptySession in interface Manager

Overrides:

createEmptySession in class ManagerBase

See Also:

Manager.createEmptySession()

getNewDeltaSession

protected DeltaSession getNewDeltaSession()

Get new session class to be used in the doLoad() method.

changeSessionId

public void changeSessionId(Session session)

Change the session ID of the current session to a new randomly generated session ID.

Specified by:

changeSessionId in interface Manager

Overrides:

changeSessionId in class ManagerBase

Parameters:

session - The session to change the session ID for

changeSessionId

public void changeSessionId(Session session,
                            boolean notify)

serializeSessionId

protected byte[] serializeSessionId(String sessionId)
                             throws IOException

serialize sessionID

Throws:

IOException - if an input/output error occurs

deserializeSessionId

protected String deserializeSessionId(byte[] data)
                               throws IOException

Load sessionID

Throws:

IOException - if an input/output error occurs

deserializeDeltaRequest

protected DeltaRequest deserializeDeltaRequest(DeltaSession session,
                                               byte[] data)
                                        throws ClassNotFoundException,
                                               IOException

Load Deltarequest from external node Load the Class at container classloader

Parameters:

session -

data - message data

Returns:

The request

Throws:

ClassNotFoundException

IOException

See Also:

DeltaRequest.readExternal(java.io.ObjectInput)

serializeDeltaRequest

protected byte[] serializeDeltaRequest(DeltaSession session,
                                       DeltaRequest deltaRequest)
                                throws IOException

serialize DeltaRequest

Parameters:

deltaRequest -

Returns:

serialized delta request

Throws:

IOException

See Also:

DeltaRequest.writeExternal(java.io.ObjectOutput)

deserializeSessions

protected void deserializeSessions(byte[] data)
                            throws ClassNotFoundException,
                                   IOException

Load sessions from other cluster node. FIXME replace currently sessions with same id without notification. FIXME SSO handling is not really correct with the session replacement!

Throws:

ClassNotFoundException - if a serialized class cannot be found during the reload

IOException - if an input/output error occurs

serializeSessions

protected byte[] serializeSessions(Session[] currentSessions)
                            throws IOException

Save any currently active sessions in the appropriate persistence mechanism, if any. If persistence is not supported, this method returns without doing anything.

Throws:

IOException - if an input/output error occurs

startInternal

protected void startInternal()
                      throws LifecycleException

Start this component and implement the requirements of LifecycleBase.startInternal().

Overrides:

startInternal in class ManagerBase

Throws:

LifecycleException - if this component detects a fatal error that prevents this component from being used

getAllClusterSessions

public void getAllClusterSessions()

get from first session master the backup from all clustered sessions

See Also:

findSessionMasterMember()

registerSessionAtReplicationValve

protected void registerSessionAtReplicationValve(DeltaSession session)

Register cross context session at replication valve thread local

Parameters:

session - cross context session

findSessionMasterMember

protected Member findSessionMasterMember()

Find the master of the session state

Returns:

master member of sessions

waitForSendAllSessions

protected void waitForSendAllSessions(long beforeSendTime)

Wait that cluster session state is transfer or timeout after 60 Sec With stateTransferTimeout == -1 wait that backup is transfered (forever mode)

stopInternal

protected void stopInternal()
                     throws LifecycleException

Stop this component and implement the requirements of LifecycleBase.stopInternal().

Overrides:

stopInternal in class ManagerBase

Throws:

LifecycleException - if this component detects a fatal error that prevents this component from being used

messageDataReceived

public void messageDataReceived(ClusterMessage cmsg)

A message was received from another node, this is the callback method to implement if you are interested in receiving replication messages.

Parameters:

cmsg - - the message received.

requestCompleted

public ClusterMessage requestCompleted(String sessionId)

When the request has been completed, the replication valve will notify the manager, and the manager will decide whether any replication is needed or not. If there is a need for replication, the manager will create a session message and that will be replicated. The cluster determines where it gets sent.

Parameters:

sessionId - - the sessionId that just completed.

Returns:

a SessionMessage to be sent,

requestCompleted

public ClusterMessage requestCompleted(String sessionId,
                                       boolean expires)

When the request has been completed, the replication valve will notify the manager, and the manager will decide whether any replication is needed or not. If there is a need for replication, the manager will create a session message and that will be replicated. The cluster determines where it gets sent. Session expiration also calls this method, but with expires == true.

Parameters:

sessionId - - the sessionId that just completed.

expires - - whether this method has been called during session expiration

Returns:

a SessionMessage to be sent,

resetStatistics

public void resetStatistics()

Reset manager statistics

sessionExpired

protected void sessionExpired(String id)

send session expired to other cluster nodes

Parameters:

id - session id

expireAllLocalSessions

public void expireAllLocalSessions()

Expire all find sessions.

getInvalidatedSessions

public String[] getInvalidatedSessions()

When the manager expires session not tied to a request. The cluster will periodically ask for a list of sessions that should expire and that should be sent across the wire.

Returns:

The invalidated sessions array

checkSenderDomain

protected boolean checkSenderDomain(SessionMessage msg,
                                    Member sender)

Test that sender and local domain is the same

messageReceived

protected void messageReceived(SessionMessage msg,
                               Member sender)

This method is called by the received thread when a SessionMessage has been received from one of the other nodes in the cluster.

Parameters:

msg - - the message received

sender - - the sender of the message, this is used if we receive a EVT_GET_ALL_SESSION message, so that we only reply to the requesting node

handleALL_SESSION_TRANSFERCOMPLETE

protected void handleALL_SESSION_TRANSFERCOMPLETE(SessionMessage msg,
                                                  Member sender)

handle receive session state is complete transfered

Parameters:

msg -

sender -

handleSESSION_DELTA

protected void handleSESSION_DELTA(SessionMessage msg,
                                   Member sender)
                            throws IOException,
                                   ClassNotFoundException

handle receive session delta

Parameters:

msg -

sender -

Throws:

IOException

ClassNotFoundException

handleSESSION_ACCESSED

protected void handleSESSION_ACCESSED(SessionMessage msg,
                                      Member sender)
                               throws IOException

handle receive session is access at other node ( primary session is now false)

Parameters:

msg -

sender -

Throws:

IOException

handleSESSION_EXPIRED

protected void handleSESSION_EXPIRED(SessionMessage msg,
                                     Member sender)
                              throws IOException

handle receive session is expire at other node ( expire session also here)

Parameters:

msg -

sender -

Throws:

IOException

handleSESSION_CREATED

protected void handleSESSION_CREATED(SessionMessage msg,
                                     Member sender)

handle receive new session is created at other node (create backup - primary false)

Parameters:

msg -

sender -

handleALL_SESSION_DATA

protected void handleALL_SESSION_DATA(SessionMessage msg,
                                      Member sender)
                               throws ClassNotFoundException,
                                      IOException

handle receive sessions from other not ( restart )

Parameters:

msg -

sender -

Throws:

ClassNotFoundException

IOException

handleGET_ALL_SESSIONS

protected void handleGET_ALL_SESSIONS(SessionMessage msg,
                                      Member sender)
                               throws IOException

handle receive that other node want all sessions ( restart ) a) send all sessions with one message b) send session at blocks After sending send state is complete transfered

Parameters:

msg -

sender -

Throws:

IOException

handleCHANGE_SESSION_ID

protected void handleCHANGE_SESSION_ID(SessionMessage msg,
                                       Member sender)
                                throws IOException

handle receive change sessionID at other node

Parameters:

msg -

sender -

Throws:

IOException

handleALL_SESSION_NOCONTEXTMANAGER

protected void handleALL_SESSION_NOCONTEXTMANAGER(SessionMessage msg,
                                                  Member sender)

handle receive no context manager.

Parameters:

msg -

sender -

sendSessions

protected void sendSessions(Member sender,
                            Session[] currentSessions,
                            long sendTimestamp)
                     throws IOException

send a block of session to sender

Parameters:

sender -

currentSessions -

sendTimestamp -

Throws:

IOException

cloneFromTemplate

public ClusterManager cloneFromTemplate()