Package org.jgroups.protocols
Class SIZE
- java.lang.Object
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- org.jgroups.stack.Protocol
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- org.jgroups.protocols.SIZE
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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
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Constructor Summary
Constructors Constructor Description SIZE()
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description java.lang.Object
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 stringjava.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, setPropertiesInternal, setProtocolStack, setUpProtocol, start, statsEnabled, stop, upThreadEnabled
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Method Detail
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getName
public java.lang.String getName()
All protocol names have to be unique !
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init
public void init()
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.
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setProperties
public boolean setProperties(java.util.Properties props)
Setup the Protocol instance acording to the configuration string- Overrides:
setProperties
in classProtocol
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up
public java.lang.Object 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 usingdown_prot.down()
or c) the event (or another event) is sent up the stack usingup_prot.up()
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down
public java.lang.Object 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 usingdown_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 usingup_prot.up()
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