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com.tangosol.coherence.servlet.management
Class HttpSessionManager

java.lang.Object
com.tangosol.util.Base
com.tangosol.coherence.servlet.management.HttpSessionManager

All Implemented Interfaces:

HttpSessionManagerMBean

public class HttpSessionManager

extends Base

implements HttpSessionManagerMBean

HttpSessionManagerMBean implementation class.

Since:

Coherence 3.1

Author:

jh 2005.11.18

Field Summary

Fields inherited from interface com.tangosol.coherence.servlet.management.HttpSessionManagerMBean

OBJECT_TYPE

Constructor Summary

HttpSessionManager(SessionHelper helper, SessionReaperStatistics reaperStatistics)
Create a new HttpSessionManager object.

Method Summary

void	clearStoredConfiguration() Removes the stored configuration which is used to check configuration consistency.
protected AbstractHttpSessionCollection	getAbstractHttpSessionCollection() Return the AbstractHttpSessionCollection currently in use.
long	getAverageReapDuration() Gets the average reap duration since the statistics was reset.
long	getAverageReapedSessions() Gets the average number of reaped sessions in a reap cycle since the statistics was reset.
String	getCollectionClassName() Return the fully qualified class name of the HttpSessionCollection implementation in use.
String	getFactoryClassName() Return the fully qualified class name of the SessionHelper.Factory implementation in use.
Date	getLastReapCycle() Return the start time for the last reap cycle.
long	getLastReapDuration() Return the time in milliseconds it took for the last reap cycle to finish.
String	getLocalAttributeCacheName() Return the name of the local cache that stores non-distributed session attributes or null if local session attribute storage is disabled.
int	getLocalAttributeCount() Return the number of non-distributed session attributes stored in the local session attribute cache or -1 if local session attribute storage is disabled.
String	getLocalSessionCacheName() Return the name of the local cache that stores non-distributed sessions or null if local session storage is disabled.
int	getLocalSessionCount() Return the number of non-distributed sessions stored in the local session cache or -1 if local session storage is disabled.
long	getMaxReapDuration() Gets the maximum reap duration since the statistics was reset.
long	getMaxReapedSessions() Gets the maximum number of sessions reaped in a reap cycle since the statistics was reset.
Date	getNextReapCycle() Returns the time for the next reap cycle.
int	getOverflowAverageSize() Return the average size (in bytes) of the session attributes stored in the "overflow" clustered cache since the last time statistics were reset or -1 if a SplitHttpSessionCollection is not in use.
String	getOverflowCacheName() Return the name of the clustered cache that stores the "large attributes" that exceed a certain size and thus are determined to be more efficiently managed as separate cache entries and not as part of the serialized session object itself.
int	getOverflowMaxSize() Return the maximum size (in bytes) of a session attribute stored in the "overflow" clustered cache since the last time statistics were reset or -1 if a SplitHttpSessionCollection is not in use.
int	getOverflowThreshold() Return the minimum length (in bytes) that the serialized form of an attribute value must be in order for that attribute value to be stored in the separate "overflow" cache that is reserved for large attributes.
int	getOverflowUpdates() Return the number of updates to session attributes stored in the "overflow" clustered cache since the last time statistics were reset or -1 if a SplitHttpSessionCollection is not in use.
long	getReapedSessions() Returns the number of expired sessions that were reaped in the last reap cycle.
long	getReapedSessionsTotal() Returns the number of expired sessions that has been reaped since the statistics was reset.
String	getServletContextCacheName() Return the name of the clustered cache that stores ServletContext attributes or null if the ServletContext is not clustered.
String	getServletContextName() Return the name of the web application ServletContext.
int	getSessionAverageLifetime() Return the average lifetime (in seconds) of session objects invalidated (either due to expiration or to an explicit invalidation) since the last time statistics were reset.
int	getSessionAverageSize() Return the average size (in bytes) of session objects placed in the session storage clustered cache since the last time statistics were reset.
String	getSessionCacheName() Return the name of the clustered cache that stores serialized session objects.
protected SessionHelper.Factory	getSessionFactory() Return the SessionHelper.Factory currently in use.
protected SessionHelper	getSessionHelper() Return the SessionHelper used by this HttpSessionManager object to expose Coherence*Web management attributes and operations.
int	getSessionIdLength() Return the length (in characters) of generated session IDs.
int	getSessionMaxSize() Return the maximum size (in bytes) of a session object placed in the session storage clustered cache since the last time statistics were reset.
int	getSessionMinSize() Return the minimum size (in bytes) of a session object placed in the session storage clustered cache since the last time statistics were reset.
int	getSessionStickyCount() Return the number of session objects that are pinned to this instance of the web application or -1 if sticky session optimizations are disabled.
int	getSessionTimeout() Return the session expiration time (in seconds) or -1 if sessions never expire.
int	getSessionUpdates() Return the number of updates of session object stored in the session storage clustered cache since the last time statistics were reset.
protected SplitHttpSessionCollection	getSplitHttpSessionCollection() Return the SplitHttpSessionCollection currently in use.
void	resetStatistics() Reset the session management statistics.
String	toString() Returns a string representation of the object.

Constructor Detail

HttpSessionManager

public HttpSessionManager(SessionHelper helper,
                          SessionReaperStatistics reaperStatistics)

Create a new HttpSessionManager object.

Parameters:

helper - the SessionHelper for the web application in which Coherence*Web is installed

reaperStatistics -

Method Detail

getAverageReapDuration

public long getAverageReapDuration()

Gets the average reap duration since the statistics was reset.

Specified by:

getAverageReapDuration in interface HttpSessionManagerMBean

Returns:

The average reap duration.

getAverageReapedSessions

public long getAverageReapedSessions()

Gets the average number of reaped sessions in a reap cycle since the statistics was reset.

Specified by:

getAverageReapedSessions in interface HttpSessionManagerMBean

Returns:

The average number of reaped sessions.

getCollectionClassName

public String getCollectionClassName()

Return the fully qualified class name of the HttpSessionCollection implementation in use.

Specified by:

getCollectionClassName in interface HttpSessionManagerMBean

Returns:

the value of the CollectionClassName attribute

getFactoryClassName

public String getFactoryClassName()

Return the fully qualified class name of the SessionHelper.Factory implementation in use.

Specified by:

getFactoryClassName in interface HttpSessionManagerMBean

Returns:

the value of the FactoryClassName attribute

getLastReapDuration

public long getLastReapDuration()

Return the time in milliseconds it took for the last reap cycle to finish.

Specified by:

getLastReapDuration in interface HttpSessionManagerMBean

Returns:

the value of the LastReapDuration attribute

getLastReapCycle

public Date getLastReapCycle()

Return the start time for the last reap cycle.

Specified by:

getLastReapCycle in interface HttpSessionManagerMBean

Returns:

the value of the LastReapTime attribute

getLocalAttributeCacheName

public String getLocalAttributeCacheName()

Return the name of the local cache that stores non-distributed session attributes or null if local session attribute storage is disabled.

Specified by:

getLocalAttributeCacheName in interface HttpSessionManagerMBean

Returns:

the value of the LocalAttributeCacheName attribute

getLocalAttributeCount

public int getLocalAttributeCount()

Return the number of non-distributed session attributes stored in the local session attribute cache or -1 if local session attribute storage is disabled.

Specified by:

getLocalAttributeCount in interface HttpSessionManagerMBean

Returns:

the value of the LocalAttributeCount attribute

See Also:

HttpSessionManagerMBean.getLocalAttributeCacheName()

getLocalSessionCacheName

public String getLocalSessionCacheName()

Return the name of the local cache that stores non-distributed sessions or null if local session storage is disabled.

Specified by:

getLocalSessionCacheName in interface HttpSessionManagerMBean

Returns:

the value of the LocalSessionCacheName attribute

getLocalSessionCount

public int getLocalSessionCount()

Return the number of non-distributed sessions stored in the local session cache or -1 if local session storage is disabled.

Specified by:

getLocalSessionCount in interface HttpSessionManagerMBean

Returns:

the value of the LocalSessionCount attribute

See Also:

HttpSessionManagerMBean.getLocalSessionCacheName()

getMaxReapDuration

public long getMaxReapDuration()

Gets the maximum reap duration since the statistics was reset.

Specified by:

getMaxReapDuration in interface HttpSessionManagerMBean

Returns:

The max reap duration.

getMaxReapedSessions

public long getMaxReapedSessions()

Gets the maximum number of sessions reaped in a reap cycle since the statistics was reset.

Specified by:

getMaxReapedSessions in interface HttpSessionManagerMBean

Returns:

The max number of sessions reaped.

getNextReapCycle

public Date getNextReapCycle()

Returns the time for the next reap cycle.

Specified by:

getNextReapCycle in interface HttpSessionManagerMBean

getOverflowAverageSize

public int getOverflowAverageSize()

Return the average size (in bytes) of the session attributes stored in the "overflow" clustered cache since the last time statistics were reset or -1 if a SplitHttpSessionCollection is not in use.

Specified by:

getOverflowAverageSize in interface HttpSessionManagerMBean

Returns:

the value of the OverflowAverageSize attribute

See Also:

HttpSessionManagerMBean.getCollectionClassName(), HttpSessionManagerMBean.getOverflowCacheName(), HttpSessionManagerMBean.getOverflowThreshold()

getOverflowCacheName

public String getOverflowCacheName()

Return the name of the clustered cache that stores the "large attributes" that exceed a certain size and thus are determined to be more efficiently managed as separate cache entries and not as part of the serialized session object itself. <p/> If a SplitHttpSessionCollection is not in use, null is returned.

Specified by:

getOverflowCacheName in interface HttpSessionManagerMBean

Returns:

the value of the OverflowCacheName attribute

See Also:

HttpSessionManagerMBean.getCollectionClassName(), HttpSessionManagerMBean.getOverflowThreshold()

getOverflowMaxSize

public int getOverflowMaxSize()

Return the maximum size (in bytes) of a session attribute stored in the "overflow" clustered cache since the last time statistics were reset or -1 if a SplitHttpSessionCollection is not in use.

Specified by:

getOverflowMaxSize in interface HttpSessionManagerMBean

Returns:

the value of the OverflowMaxSize attribute

See Also:

HttpSessionManagerMBean.getCollectionClassName(), HttpSessionManagerMBean.getOverflowCacheName(), HttpSessionManagerMBean.getOverflowThreshold()

getOverflowThreshold

public int getOverflowThreshold()

Return the minimum length (in bytes) that the serialized form of an attribute value must be in order for that attribute value to be stored in the separate "overflow" cache that is reserved for large attributes. <p/> If a SplitHttpSessionCollection is not in use, -1 is returned.

Specified by:

getOverflowThreshold in interface HttpSessionManagerMBean

Returns:

the value of the OverflowThreshold attribute

See Also:

HttpSessionManagerMBean.getCollectionClassName(), HttpSessionManagerMBean.getOverflowCacheName()

getOverflowUpdates

public int getOverflowUpdates()

Return the number of updates to session attributes stored in the "overflow" clustered cache since the last time statistics were reset or -1 if a SplitHttpSessionCollection is not in use.

Specified by:

getOverflowUpdates in interface HttpSessionManagerMBean

Returns:

the value of the OverflowUpdates attribute

See Also:

HttpSessionManagerMBean.getCollectionClassName(), HttpSessionManagerMBean.getOverflowCacheName(), HttpSessionManagerMBean.getOverflowThreshold()

getReapedSessions

public long getReapedSessions()

Returns the number of expired sessions that were reaped in the last reap cycle.

Specified by:

getReapedSessions in interface HttpSessionManagerMBean

Returns:

the value of the ReapedSessions attribute

getReapedSessionsTotal

public long getReapedSessionsTotal()

Returns the number of expired sessions that has been reaped since the statistics was reset.

Specified by:

getReapedSessionsTotal in interface HttpSessionManagerMBean

Returns:

the value of the ReapedSessionsTotal attribute

getSessionAverageLifetime

public int getSessionAverageLifetime()

Return the average lifetime (in seconds) of session objects invalidated (either due to expiration or to an explicit invalidation) since the last time statistics were reset.

Specified by:

getSessionAverageLifetime in interface HttpSessionManagerMBean

Returns:

the value of the SessionAverageLifetime attribute

getSessionAverageSize

public int getSessionAverageSize()

Return the average size (in bytes) of session objects placed in the session storage clustered cache since the last time statistics were reset.

Specified by:

getSessionAverageSize in interface HttpSessionManagerMBean

Returns:

the value of the SessionAverageSize attribute

getSessionCacheName

public String getSessionCacheName()

Return the name of the clustered cache that stores serialized session objects.

Specified by:

getSessionCacheName in interface HttpSessionManagerMBean

Returns:

the value of the SessionCacheName attribute

getSessionIdLength

public int getSessionIdLength()

Return the length (in characters) of generated session IDs.

Specified by:

getSessionIdLength in interface HttpSessionManagerMBean

Returns:

the value of the SessionIdLength attribute

getSessionMaxSize

public int getSessionMaxSize()

Return the maximum size (in bytes) of a session object placed in the session storage clustered cache since the last time statistics were reset.

Specified by:

getSessionMaxSize in interface HttpSessionManagerMBean

Returns:

the value of the SessionMaxSize attribute

getSessionMinSize

public int getSessionMinSize()

Return the minimum size (in bytes) of a session object placed in the session storage clustered cache since the last time statistics were reset.

Specified by:

getSessionMinSize in interface HttpSessionManagerMBean

Returns:

the value of the SessionMinSize attribute

getSessionStickyCount

public int getSessionStickyCount()

Return the number of session objects that are pinned to this instance of the web application or -1 if sticky session optimizations are disabled.

Specified by:

getSessionStickyCount in interface HttpSessionManagerMBean

Returns:

the value of the SessionStickyCount attribute

getSessionTimeout

public int getSessionTimeout()

Return the session expiration time (in seconds) or -1 if sessions never expire.

Specified by:

getSessionTimeout in interface HttpSessionManagerMBean

Returns:

the value of the SessionTimeout attribute

getSessionUpdates

public int getSessionUpdates()

Return the number of updates of session object stored in the session storage clustered cache since the last time statistics were reset.

Specified by:

getSessionUpdates in interface HttpSessionManagerMBean

Returns:

the value of the SessionUpdates attribute

getServletContextCacheName

public String getServletContextCacheName()

Return the name of the clustered cache that stores ServletContext attributes or null if the ServletContext is not clustered.

Specified by:

getServletContextCacheName in interface HttpSessionManagerMBean

Returns:

the value of the ServletContextCacheName attribute

getServletContextName

public String getServletContextName()

Return the name of the web application ServletContext.

Specified by:

getServletContextName in interface HttpSessionManagerMBean

Returns:

the value of the ServletContextName attribute

resetStatistics

public void resetStatistics()

Reset the session management statistics.

Specified by:

resetStatistics in interface HttpSessionManagerMBean

clearStoredConfiguration

public void clearStoredConfiguration()

Removes the stored configuration which is used to check configuration consistency.

Specified by:

clearStoredConfiguration in interface HttpSessionManagerMBean

getSessionHelper

protected SessionHelper getSessionHelper()

Return the SessionHelper used by this HttpSessionManager object to expose Coherence*Web management attributes and operations.

Returns:

the SessionHelper used by this HttpSessionManager

getSessionFactory

protected SessionHelper.Factory getSessionFactory()

Return the SessionHelper.Factory currently in use.

Returns:

the SessionHelper.Factory or null if one could not be retrieved

getAbstractHttpSessionCollection

protected AbstractHttpSessionCollection getAbstractHttpSessionCollection()

Return the AbstractHttpSessionCollection currently in use.

Returns:

the AbstractHttpSessionCollection or null if one could not be retrieved

getSplitHttpSessionCollection

protected SplitHttpSessionCollection getSplitHttpSessionCollection()

Return the SplitHttpSessionCollection currently in use.

Returns:

the SplitHttpSessionCollection or null if one could not be retrieved

toString

public String toString()

Returns a string representation of the object.

Returns:

a string representation of the object

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