org.jgroups.protocols
Class AUTH

java.lang.Object
  org.jgroups.stack.Protocol
      org.jgroups.protocols.AUTH

public class AUTH
extends Protocol

The AUTH protocol adds a layer of authentication to JGroups

Author:

Chris Mills

Field Summary

Fields inherited from class org.jgroups.stack.Protocol

down_prot, log, stack, stats, up_prot

Constructor Summary

AUTH()

Method Summary

java.lang.Object	down(Event evt) An event is to be sent down the stack.
protected java.util.List<java.lang.Object>	getConfigurableObjects() After configuring the protocol itself from the properties defined in the XML config, a protocol might have additional objects which need to be configured.
java.lang.String	getName() All protocol names have to be unique !
void	init() Called after instance has been created (null constructor) and before protocol is started.
void	setAuthClass(java.lang.String class_name)
java.lang.Object	up(Event evt) An event was received from the layer below.

Methods inherited from class org.jgroups.stack.Protocol

destroy, downThreadEnabled, dumpStats, enableStats, getDownProtocol, getProperties, getProtocolStack, getThreadFactory, getTransport, getUpProtocol, printStats, providedDownServices, providedUpServices, requiredDownServices, requiredUpServices, resetStats, setDownProtocol, setProperties, setPropertiesInternal, setProperty, setProtocolStack, setUpProtocol, start, statsEnabled, stop, upThreadEnabled

Methods inherited from class java.lang.Object

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

Constructor Detail

AUTH

public AUTH()

Method Detail

setAuthClass

public void setAuthClass(java.lang.String class_name)
                  throws java.lang.Exception

Throws:

java.lang.Exception

getName

public final java.lang.String getName()

Description copied from class: Protocol

All protocol names have to be unique !

Specified by:

getName in class Protocol

getConfigurableObjects

protected java.util.List<java.lang.Object> getConfigurableObjects()

Description copied from class: Protocol

After configuring the protocol itself from the properties defined in the XML config, a protocol might have additional objects which need to be configured. This callback allows a protocol developer to configure those other objects. This call is guaranteed to be invoked after the protocol itself has been configured. See AUTH for an example.

Overrides:

getConfigurableObjects in class Protocol

Returns:

init

public void init()
          throws java.lang.Exception

Description copied from class: Protocol

Called after instance has been created (null constructor) and before protocol is started. Properties are already set. Other protocols are not yet connected and events cannot yet be sent.

Overrides:

init in class Protocol

Throws:

java.lang.Exception - Thrown if protocol cannot be initialized successfully. This will cause the ProtocolStack to fail, so the channel constructor will throw an exception

up

public java.lang.Object up(Event evt)

An event was received from the layer below. Usually the current layer will want to examine the event type and - depending on its type - perform some computation (e.g. removing headers from a MSG event type, or updating the internal membership list when receiving a VIEW_CHANGE event). Finally the event is either a) discarded, or b) an event is sent down the stack using down_prot.down() or c) the event (or another event) is sent up the stack using up_prot.up().

Overrides:

up in class Protocol

down

public java.lang.Object down(Event evt)

An event is to be sent down the stack. The layer may want to examine its type and perform some action on it, depending on the event's type. If the event is a message MSG, then the layer may need to add a header to it (or do nothing at all) before sending it down the stack using down_prot.down(). In case of a GET_ADDRESS event (which tries to retrieve the stack's address from one of the bottom layers), the layer may need to send a new response event back up the stack using up_prot.up().

Overrides:

down in class Protocol