Package org.jgroups.protocols
Class DELAY
- java.lang.Object
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- org.jgroups.stack.Protocol
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- org.jgroups.protocols.DELAY
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public class DELAY extends Protocol
Delays incoming/outgoing messages by a random number of milliseconds (range between 0 and n where n is determined by the user). Incoming messages can be delayed independently from outgoing messages (or not delayed at all).This protocol should be inserted directly above the bottommost protocol (e.g. UDP).
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Constructor Summary
Constructors Constructor Description DELAY()
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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.int
getInDelay()
java.lang.String
getName()
All protocol names have to be unique !int
getOutDelay()
void
setInDelay(int in_delay)
void
setOutDelay(int out_delay)
boolean
setProperties(java.util.Properties props)
Configures the protocol initially.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, init, 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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setProperties
public boolean setProperties(java.util.Properties props)
Description copied from class:Protocol
Configures the protocol initially. A configuration string consists of name=value items, separated by a ';' (semicolon), e.g.:"loopback=false;unicast_inport=4444"
- Overrides:
setProperties
in classProtocol
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getInDelay
public int getInDelay()
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setInDelay
public void setInDelay(int in_delay)
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getOutDelay
public int getOutDelay()
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setOutDelay
public void setOutDelay(int out_delay)
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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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