tigase.cluster.strategy

Class SMNonCachingAllNodes

java.lang.Object

tigase.cluster.strategy.SMNonCachingAllNodes

All Implemented Interfaces:

ClusteringStrategyIfc<ConnectionRecord>, StatisticHolder, OnlineJidsReporter

public abstract class SMNonCachingAllNodes
extends Object
implements ClusteringStrategyIfc<ConnectionRecord>

Created: May 13, 2009 9:53:44 AM

Author:

Artur Hefczyc

Constructor Summary

Constructors

Constructor and Description
SMNonCachingAllNodes()

Method Summary

Modifier and Type	Method and Description
boolean	containsJid(BareJID jid) The method checks whether the given JID is known to the installation, either user connected to local machine or any of the cluster nodes.
JID[]	getConnectionIdsForJid(BareJID jid) Retrieve all connection IDs (CIDs) for the given user.
Set<ConnectionRecord>	getConnectionRecords(BareJID bareJID) Returns a set with all ConnectionRecords found in the cache for a given user ID, that is BareJID.
List<JID>	getNodesConnected() The method returns all cluster nodes currently connected to the cluster node.
List<JID>	getNodesForJid(JID jid)
List<JID>	getNodesForPacketForward(JID fromNode, Set<JID> visitedNodes, Packet packet)
List<JID>	getNodesForUserConnect(JID jid)
List<JID>	getNodesForUserDisconnect(JID jid)
void	getStatistics(StatisticsList list) Add the strategy statistics to the List.
boolean	hasCompleteJidsInfo() Method checks whether the clustering strategy has a complete JIDs info.
protected boolean	isSuitableForForward(Packet packet)
void	nodeConnected(JID jid) This is a handler method which is called when a new node connects to the cluster.
void	nodeDisconnected(JID jid) This is a handler method which is called when a node disconnects from the cluster.
void	setProperties(Map<String,Object> props) Method used to pass configuration parameters to the class.

Methods inherited from class java.lang.Object

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

Methods inherited from interface tigase.cluster.strategy.ClusteringStrategyIfc

getConnectionRecord, getConnectionRecordInstance, getDefaults, getInfo, handleLocalPacket, handleLocalPresenceSet, handleLocalResourceBind, handleLocalUserChangedConnId, handleLocalUserLogin, handleLocalUserLogout, processPacket, setClusterController

Methods inherited from interface tigase.sys.OnlineJidsReporter

containsJidLocally, containsJidLocally

Methods inherited from interface tigase.stats.StatisticHolder

everyHour, everyMinute, everySecond, getStatistics, setStatisticsPrefix, statisticExecutedIn

Constructor Detail

SMNonCachingAllNodes

public SMNonCachingAllNodes()

Method Detail

containsJid

public boolean containsJid(BareJID jid)

Description copied from interface: OnlineJidsReporter

The method checks whether the given JID is known to the installation, either user connected to local machine or any of the cluster nodes. False result does not mean the user is not connected. It means the method does not know anything about the JID. Some clustering strategies may not cache online users information.

Specified by:

containsJid in interface OnlineJidsReporter

Parameters:

jid - a user's JID for whom we query information.

Returns:

true if the user is known as online to the installation, false if the method does not know.

nodeConnected

public void nodeConnected(JID jid)

Description copied from interface: ClusteringStrategyIfc

This is a handler method which is called when a new node connects to the cluster.

Specified by:

nodeConnected in interface ClusteringStrategyIfc<ConnectionRecord>

Parameters:

jid - is a cluster node id.

nodeDisconnected

public void nodeDisconnected(JID jid)

Description copied from interface: ClusteringStrategyIfc

This is a handler method which is called when a node disconnects from the cluster.

Specified by:

nodeDisconnected in interface ClusteringStrategyIfc<ConnectionRecord>

Parameters:

jid - is a cluster node id.

getNodesConnected

public List<JID> getNodesConnected()

Description copied from interface: ClusteringStrategyIfc

The method returns all cluster nodes currently connected to the cluster node.

Specified by:

getNodesConnected in interface ClusteringStrategyIfc<ConnectionRecord>

Returns:

List of all cluster nodes currently connected to the cluster node.

getConnectionIdsForJid

public JID[] getConnectionIdsForJid(BareJID jid)

Description copied from interface: OnlineJidsReporter

Retrieve all connection IDs (CIDs) for the given user.

Specified by:

getConnectionIdsForJid in interface OnlineJidsReporter

Parameters:

jid - id of the user for which we want to retrieve the list.

Returns:

an array of JID containing all Connection IDs (CIDs) for the given user.

getConnectionRecords

public Set<ConnectionRecord> getConnectionRecords(BareJID bareJID)

Description copied from interface: ClusteringStrategyIfc

Returns a set with all ConnectionRecords found in the cache for a given user ID, that is BareJID. In other words all user's resources/connectionIDs found in the cache associated with user's account.

Specified by:

getConnectionRecords in interface ClusteringStrategyIfc<ConnectionRecord>

Parameters:

bareJID - is an instance of the user's BareJID, that is account ID.

Returns:

a Set instance with all ConnectionRecords found for a given BareJID. Note, the result may be null or it maybe an empty Set or non-empty set.

getNodesForJid

public List<JID> getNodesForJid(JID jid)

getNodesForPacketForward

public List<JID> getNodesForPacketForward(JID fromNode,
                                          Set<JID> visitedNodes,
                                          Packet packet)

getNodesForUserConnect

public List<JID> getNodesForUserConnect(JID jid)

getNodesForUserDisconnect

public List<JID> getNodesForUserDisconnect(JID jid)

getStatistics

public void getStatistics(StatisticsList list)

Description copied from interface: ClusteringStrategyIfc

Add the strategy statistics to the List.

Specified by:

getStatistics in interface ClusteringStrategyIfc<ConnectionRecord>

hasCompleteJidsInfo

public boolean hasCompleteJidsInfo()

Description copied from interface: OnlineJidsReporter

Method checks whether the clustering strategy has a complete JIDs info. That is whether the strategy knows about all users connected to all nodes. Some strategies may choose not to share this information among nodes, hence the methods returns false. Other may synchronize this information and can provide it to further optimize cluster traffic.

Specified by:

hasCompleteJidsInfo in interface OnlineJidsReporter

Returns:

a true boolean value if the strategy has a complete information about all users connected to all cluster nodes.

setProperties

public void setProperties(Map<String,Object> props)

Description copied from interface: ClusteringStrategyIfc

Method used to pass configuration parameters to the class. Parameters are stored in Map which contains compiles set of defaults overwritten by parameters loaded from configuration file.
If he implementation took a good care of providing defaults for all parameters no parameter should be missing.

Specified by:

setProperties in interface ClusteringStrategyIfc<ConnectionRecord>

Parameters:

props - a Map with all configuration parameters for the class.

isSuitableForForward

protected boolean isSuitableForForward(Packet packet)