org.javagroups.protocols
Class SIZE
java.lang.Object
|
+--org.javagroups.stack.Protocol
|
+--org.javagroups.protocols.SIZE
- public class SIZE
- extends Protocol
Protocol which prints out the real size of a message. To do this, the message
is serialized into a byte buffer and its size read. Don't use this layer in
a production stack since the costs are high (just for debugging).
- Author:
- Bela Ban June 13 2001
Fields inherited from class org.javagroups.stack.Protocol |
down_handler, down_prot, down_queue, down_thread, observer, props, stack, up_handler, up_prot, up_queue, up_thread |
Constructor Summary |
SIZE()
|
Method Summary |
void |
down(Event evt)
An event is to be sent down the stack. |
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 |
boolean |
setProperties(java.util.Properties props)
Setup the Protocol instance acording to the configuration string |
void |
up(Event evt)
An event was received from the layer below. |
Methods inherited from class org.javagroups.stack.Protocol |
getDownProtocol, getDownQueue, getProperties, getUpProtocol, getUpQueue, passDown, passUp, providedDownServices, providedUpServices, receiveDownEvent, receiveUpEvent, requiredDownServices, requiredUpServices, setDownProtocol, setObserver, setPropertiesInternal, setProtocolStack, setUpProtocol, startDownHandler, startUpHandler, stopInternal |
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
SIZE
public SIZE()
getName
public java.lang.String getName()
- All protocol names have to be unique !
- Overrides:
getName
in class Protocol
init
public void init()
- Description copied from class:
Protocol
- Called after instance has been created (null constructor) and before protocol is started
- Overrides:
init
in class Protocol
setProperties
public boolean setProperties(java.util.Properties props)
- Setup the Protocol instance acording to the configuration string
- Overrides:
setProperties
in class Protocol
up
public void up(Event evt)
- Description copied from class:
Protocol
- 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
passDown()
or c) the event (or another event) is sent up
the stack using passUp()
.
- Overrides:
up
in class Protocol
down
public void down(Event evt)
- Description copied from class:
Protocol
- 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
passDown()
. 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 passUp()
.
- Overrides:
down
in class Protocol
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