org.eclipse.jetty.server.session

Class DefaultSessionCache

java.lang.Object

org.eclipse.jetty.util.component.AbstractLifeCycle

org.eclipse.jetty.util.component.ContainerLifeCycle

org.eclipse.jetty.server.session.AbstractSessionCache

org.eclipse.jetty.server.session.DefaultSessionCache

All Implemented Interfaces:

SessionCache, Container, Destroyable, Dumpable, LifeCycle

@ManagedObject
public class DefaultSessionCache
extends AbstractSessionCache

DefaultSessionCache A session store that keeps its sessions in memory in a hashmap

Nested Class Summary

Nested classes/interfaces inherited from class org.eclipse.jetty.util.component.AbstractLifeCycle

AbstractLifeCycle.AbstractLifeCycleListener

Nested classes/interfaces inherited from interface org.eclipse.jetty.util.component.LifeCycle

LifeCycle.Listener

Nested classes/interfaces inherited from interface org.eclipse.jetty.util.component.Container

Container.InheritedListener, Container.Listener

Field Summary

Fields

Modifier and Type	Field and Description
protected java.util.concurrent.ConcurrentHashMap<java.lang.String,Session>	_sessions The cache of sessions in a hashmap
private CounterStatistic	_stats
private static Logger	LOG

Fields inherited from class org.eclipse.jetty.server.session.AbstractSessionCache

_context, _evictionPolicy, _flushOnResponseCommit, _handler, _invalidateOnShutdown, _removeUnloadableSessions, _saveOnCreate, _saveOnInactiveEviction, _sessionDataStore

Fields inherited from class org.eclipse.jetty.util.component.AbstractLifeCycle

FAILED, RUNNING, STARTED, STARTING, STOPPED, STOPPING

Fields inherited from interface org.eclipse.jetty.server.session.SessionCache

EVICT_ON_INACTIVITY, EVICT_ON_SESSION_EXIT, NEVER_EVICT

Fields inherited from interface org.eclipse.jetty.util.component.Dumpable

KEY

Constructor Summary

Constructors

Constructor and Description
DefaultSessionCache(SessionHandler manager)

Method Summary

Modifier and Type	Method and Description
protected Session	doComputeIfAbsent(java.lang.String id, java.util.function.Function<java.lang.String,Session> mappingFunction) Compute the mappingFunction to create a Session object iff the session with the given id isn't already in the map, otherwise return the existing Session.
Session	doDelete(java.lang.String id) Remove the session with this identity from the store
Session	doGet(java.lang.String id) Get the session matching the key from the cache.
Session	doPutIfAbsent(java.lang.String id, Session session) Put the session into the map if it wasn't already there
boolean	doReplace(java.lang.String id, Session oldValue, Session newValue) Replace the mapping from id to oldValue with newValue
long	getSessionsCurrent()
long	getSessionsMax()
long	getSessionsTotal()
Session	newSession(javax.servlet.http.HttpServletRequest request, SessionData data) Create a new Session for a request.
Session	newSession(SessionData data) Create a new Session object from pre-existing session data
void	resetStats()
void	shutdown()

Methods inherited from class org.eclipse.jetty.server.session.AbstractSessionCache

add, checkExpiration, checkInactiveSession, commit, contains, delete, doStart, doStop, exists, get, getAndEnter, getEvictionPolicy, getSessionDataStore, getSessionHandler, initialize, isFlushOnResponseCommit, isInvalidateOnShutdown, isRemoveUnloadableSessions, isSaveOnCreate, isSaveOnInactiveEviction, newSession, put, release, renewSessionId, renewSessionId, setEvictionPolicy, setFlushOnResponseCommit, setInvalidateOnShutdown, setRemoveUnloadableSessions, setSaveOnCreate, setSaveOnInactiveEviction, setSessionDataStore, toString

Methods inherited from class org.eclipse.jetty.util.component.ContainerLifeCycle

addBean, addBean, addEventListener, addManaged, contains, destroy, dump, dump, dump, dump, dump, dumpBeans, dumpObject, dumpObjects, dumpStdErr, dumpThis, getBean, getBeans, getBeans, getContainedBeans, getContainedBeans, isAuto, isManaged, isUnmanaged, manage, removeBean, removeBeans, removeEventListener, setBeans, setStopTimeout, start, stop, unmanage, updateBean, updateBean, updateBeans

Methods inherited from class org.eclipse.jetty.util.component.AbstractLifeCycle

addLifeCycleListener, getState, getState, getStopTimeout, isFailed, isRunning, isStarted, isStarting, isStopped, isStopping, removeLifeCycleListener, start, stop

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.eclipse.jetty.server.session.SessionCache

renewSessionId

Methods inherited from interface org.eclipse.jetty.util.component.LifeCycle

addLifeCycleListener, isFailed, isRunning, isStarted, isStarting, isStopped, isStopping, removeLifeCycleListener, start, start, stop, stop

Methods inherited from interface org.eclipse.jetty.util.component.Dumpable

dumpContainer, dumpIterable, dumpMapEntries, dumpObjects, dumpSelf, named

Field Detail

LOG

private static final Logger LOG

_sessions

protected java.util.concurrent.ConcurrentHashMap<java.lang.String,Session> _sessions

The cache of sessions in a hashmap

_stats

private final CounterStatistic _stats

Constructor Detail

DefaultSessionCache

public DefaultSessionCache(SessionHandler manager)

Parameters:

manager - The SessionHandler related to this SessionCache

Method Detail

getSessionsCurrent

@ManagedAttribute(value="current sessions in cache",
                  readonly=true)
public long getSessionsCurrent()

Returns:

the number of sessions in the cache

getSessionsMax

@ManagedAttribute(value="max sessions in cache",
                  readonly=true)
public long getSessionsMax()

Returns:

the max number of sessions in the cache

getSessionsTotal

@ManagedAttribute(value="total sessions in cache",
                  readonly=true)
public long getSessionsTotal()

Returns:

a running total of sessions in the cache

resetStats

@ManagedOperation(value="reset statistics",
                  impact="ACTION")
public void resetStats()

doGet

public Session doGet(java.lang.String id)

Description copied from class: AbstractSessionCache

Get the session matching the key from the cache. Does not load the session.

Specified by:

doGet in class AbstractSessionCache

Parameters:

id - session id

Returns:

the Session object matching the id

doPutIfAbsent

public Session doPutIfAbsent(java.lang.String id,
                             Session session)

Description copied from class: AbstractSessionCache

Put the session into the map if it wasn't already there

Specified by:

doPutIfAbsent in class AbstractSessionCache

Parameters:

id - the identity of the session

session - the session object

Returns:

null if the session wasn't already in the map, or the existing entry otherwise

doComputeIfAbsent

protected Session doComputeIfAbsent(java.lang.String id,
                                    java.util.function.Function<java.lang.String,Session> mappingFunction)

Description copied from class: AbstractSessionCache

Compute the mappingFunction to create a Session object iff the session with the given id isn't already in the map, otherwise return the existing Session. This method is expected to have precisely the same behaviour as ConcurrentHashMap.computeIfAbsent(K, java.util.function.Function<? super K, ? extends V>)

Specified by:

doComputeIfAbsent in class AbstractSessionCache

Parameters:

id - the session id

mappingFunction - the function to load the data for the session

Returns:

an existing Session from the cache

doDelete

public Session doDelete(java.lang.String id)

Description copied from class: AbstractSessionCache

Remove the session with this identity from the store

Specified by:

doDelete in class AbstractSessionCache

Parameters:

id - the id

Returns:

Session that was removed or null

shutdown

public void shutdown()

newSession

public Session newSession(javax.servlet.http.HttpServletRequest request,
                          SessionData data)

Description copied from class: AbstractSessionCache

Create a new Session for a request.

Specified by:

newSession in class AbstractSessionCache

Parameters:

request - the request

data - the session data

Returns:

the new session

newSession

public Session newSession(SessionData data)

Description copied from class: AbstractSessionCache

Create a new Session object from pre-existing session data

Specified by:

newSession in interface SessionCache

Specified by:

newSession in class AbstractSessionCache

Parameters:

data - the session data

Returns:

a new Session object

doReplace

public boolean doReplace(java.lang.String id,
                         Session oldValue,
                         Session newValue)

Description copied from class: AbstractSessionCache

Replace the mapping from id to oldValue with newValue

Specified by:

doReplace in class AbstractSessionCache

Parameters:

id - the id

oldValue - the old value

newValue - the new value

Returns:

true if replacement was done