tigase.xmpp.impl

Class ServiceDiscovery

java.lang.Object

tigase.xmpp.XMPPProcessor

tigase.xmpp.impl.annotation.AnnotatedXMPPProcessor

tigase.xmpp.XMPPProcessorAbstract

tigase.xmpp.impl.ServiceDiscovery

All Implemented Interfaces:

Comparable<XMPPImplIfc>, XMPPImplIfc, XMPPProcessorConcurrencyAwareIfc, XMPPProcessorIfc

@Bean(name="disco",
      parent=SessionManager.class,
      active=true)
public class ServiceDiscovery
extends XMPPProcessorAbstract

Implementation of JEP-030.
Created: Mon Mar 27 20:45:36 2006

Author:

Artur Hefczyc

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static interface	ServiceDiscovery.AccountServiceProvider

Field Summary

Fields

Modifier and Type	Field and Description
protected static String	ID

Fields inherited from class tigase.xmpp.XMPPProcessor

ALL_NAMES, ALL_PATHS, cmpInfo

Fields inherited from interface tigase.xmpp.XMPPImplIfc

CLIENT_XMLNS

Constructor Summary

Constructors

Constructor and Description
ServiceDiscovery()

Method Summary

Modifier and Type	Method and Description
String	id() Method id returns a unique ID of the plugin.
void	process(Packet packet, XMPPResourceConnection session, NonAuthUserRepository repo, Queue<Packet> results, Map<String,Object> settings)
void	processFromUserToServerPacket(JID connectionId, Packet packet, XMPPResourceConnection session, NonAuthUserRepository repo, Queue<Packet> results, Map<String,Object> settings) The method is called when a packet is send from the user who is owner of the session to the local server (ping, roster management, privacy lists, etc...).
void	processNullSessionPacket(Packet packet, NonAuthUserRepository repo, Queue<Packet> results, Map<String,Object> settings) The method is called for packets received by the server for which no user session is found - neither sender session or receiver session.
void	processServerSessionPacket(Packet packet, XMPPResourceConnection session, NonAuthUserRepository repo, Queue<Packet> results, Map<String,Object> settings) The method is called when a packet addressed to the server domain is received.
Element[]	supDiscoFeatures(XMPPResourceConnection session) Method supDiscoFeatures returns an array of XML Elements with service discovery features which have to be returned to the client uppon request.
String[][]	supElementNamePaths() Method supElementNamePaths returns an array of element names in form of a full path to the XML element for stanzas which can be processed by this plugin.
String[]	supNamespaces() Method supNamespaces returns an array of name-spaces for stanzas which can be processed by this plugin.

Methods inherited from class tigase.xmpp.XMPPProcessorAbstract

isFromUserSession, isNullSession, isServerSession, isToUserSession, processFromUserOutPacket, processFromUserPacket, processToUserPacket

Methods inherited from class tigase.xmpp.impl.annotation.AnnotatedXMPPProcessor

supStreamFeatures, supTypes

Methods inherited from class tigase.xmpp.XMPPProcessor

canHandle, compareTo, concurrentThreadsPerQueue, getComponentInfo, getInstance, getQueueSize, getStatistics, getThreadsNo, init, isSupporting, supElements, toString

Methods inherited from class java.lang.Object

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

Methods inherited from interface tigase.xmpp.XMPPImplIfc

canHandle, concurrentQueuesNo, concurrentThreadsPerQueue, getComponentInfo, getStatistics, init, isSupporting, supElements, supStreamFeatures, supTypes

Methods inherited from interface java.lang.Comparable

compareTo

Field Detail

ID

protected static final String ID

See Also:

Constant Field Values

Constructor Detail

ServiceDiscovery

public ServiceDiscovery()

Method Detail

id

public String id()

Description copied from interface: XMPPImplIfc

Method id returns a unique ID of the plugin. Each plugin has own, unique ID which is used in the configuration file to determine whether it needs to be loaded or not. In most cases the ID can be equal to XMLNS of the packages processed by the plugin.

Specified by:

id in interface XMPPImplIfc

Overrides:

id in class AnnotatedXMPPProcessor

Returns:

a String value

process

public void process(Packet packet,
                    XMPPResourceConnection session,
                    NonAuthUserRepository repo,
                    Queue<Packet> results,
                    Map<String,Object> settings)
             throws XMPPException

Specified by:

process in interface XMPPProcessorIfc

Overrides:

process in class XMPPProcessorAbstract

Parameters:

packet - packet is which being processed. This parameter may never be null. Even though this is not immutable object it mustn't be altered. None of it's fields or attributes can be changed during processing.

session - user session which keeps all the user session data and also gives an access to the user's repository data. It allows for storing information in a permanent storage or in memory only during the live of the online session. This parameter can be null if there is no online user session at the time of the packet processing.

repo - this is a user data storage which is normally used when the user session (parameter above) is null. This is repository allows for a very restricted access only. It allows for storing some user private data (doesn't allow overwriting existing data) like messages for offline users and it also allows for reading user public data like VCard.

results - this a collection with packets which have been generated as input packet processing results. Regardless a response to a user request is sent or the packet is forwarded to it's destination it is always required that a copy of the input packet is created and stored in the results queue.

settings - this map keeps plugin specific settings loaded from the Tigase server configuration. In most cases it is unused, however if the plugin needs to access an external database that this is a way to pass database connection string to the plugin.

Throws:

XMPPException

processFromUserToServerPacket

public void processFromUserToServerPacket(JID connectionId,
                                          Packet packet,
                                          XMPPResourceConnection session,
                                          NonAuthUserRepository repo,
                                          Queue<Packet> results,
                                          Map<String,Object> settings)
                                   throws PacketErrorTypeException

Description copied from class: XMPPProcessorAbstract

The method is called when a packet is send from the user who is owner of the session to the local server (ping, roster management, privacy lists, etc...). There is no default implementation for the method.

Specified by:

processFromUserToServerPacket in class XMPPProcessorAbstract

Parameters:

connectionId - is a JID instance with the session connection ID.

packet - is a Packet sent by the user.

session - is a XMPPResourceConnection instance with all the sending user session data.

repo - is a NonAuthUserRepository instance giving access to a part of the user repository which is accessible regardless the session is authenticated or not.

results - is a packets Queue with all the processing results from the plugin.

settings - is a Map with all the configuration settings passed to the plugin.

Throws:

PacketErrorTypeException - on attempt to send an error response to the error packet.

processNullSessionPacket

public void processNullSessionPacket(Packet packet,
                                     NonAuthUserRepository repo,
                                     Queue<Packet> results,
                                     Map<String,Object> settings)
                              throws PacketErrorTypeException

Description copied from class: XMPPProcessorAbstract

The method is called for packets received by the server for which no user session is found - neither sender session or receiver session. The default implementation does nothing, just ignores such a packet. To change the default behaviour the method has to be overwritten.

Overrides:

processNullSessionPacket in class XMPPProcessorAbstract

Parameters:

packet - is a Packet received by the server.

repo - is a NonAuthUserRepository instance giving access to a part of the user repository which is accessible regardless the session is authenticated or not.

results - is a packets Queue with all the processing results from the plugin.

settings - is a Map with all the configuration settings passed to the plugin.

Throws:

PacketErrorTypeException - on attempt to send an error response to the error packet.

processServerSessionPacket

public void processServerSessionPacket(Packet packet,
                                       XMPPResourceConnection session,
                                       NonAuthUserRepository repo,
                                       Queue<Packet> results,
                                       Map<String,Object> settings)
                                throws PacketErrorTypeException

Description copied from class: XMPPProcessorAbstract

The method is called when a packet addressed to the server domain is received. Please note, if a local user sends a packet to the server, the packet is handled by the processFromUserPacket(...) method. This method is not called for such packets.

Specified by:

processServerSessionPacket in class XMPPProcessorAbstract

Parameters:

packet - is a Packet received by the server and addressed to the server - the server virtual domain name.

session - is a XMPPResourceConnection instance with all the server session data.

repo - is a NonAuthUserRepository instance giving access to a part of the user repository which is accessible regardless the session is authenticated or not.

results - is a packets Queue with all the processing results from the plugin.

settings - is a Map with all the configuration settings passed to the plugin.

Throws:

PacketErrorTypeException - on attempt to send an error response to the error packet.

supDiscoFeatures

public Element[] supDiscoFeatures(XMPPResourceConnection session)

Description copied from interface: XMPPImplIfc

Method supDiscoFeatures returns an array of XML Elements with service discovery features which have to be returned to the client uppon request. Service discovery features returned by this method correspond to services supported by this plugin.

Specified by:

supDiscoFeatures in interface XMPPImplIfc

Overrides:

supDiscoFeatures in class AnnotatedXMPPProcessor

Parameters:

session - a XMPPResourceConnection value

Returns:

an Element[] value

supElementNamePaths

public String[][] supElementNamePaths()

Description copied from interface: XMPPImplIfc

Method supElementNamePaths returns an array of element names in form of a full path to the XML element for stanzas which can be processed by this plugin. Each element name path corresponds to XMLNS returned in array by supNamespaces() method. The element path itself is represented by a String array with each path element as a separate String.

Specified by:

supElementNamePaths in interface XMPPImplIfc

Overrides:

supElementNamePaths in class AnnotatedXMPPProcessor

Returns:

a String[][] value is an array for element paths for which the plugin offers processing capabilities. Each path is in form of a String array in order to reduce parsing overhead.

supNamespaces

public String[] supNamespaces()

Description copied from interface: XMPPImplIfc

Method supNamespaces returns an array of name-spaces for stanzas which can be processed by this plugin. Each namespace corresponds to element name returned in array by supElemenets() method.

Specified by:

supNamespaces in interface XMPPImplIfc

Overrides:

supNamespaces in class AnnotatedXMPPProcessor

Returns:

a String[] value