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java.lang.Objectorg.jgroups.stack.Protocol
org.jgroups.protocols.DISCARD
public class DISCARD
Discards up or down messages based on a percentage; e.g., setting property 'up' to 0.1 causes 10% of all up messages to be discarded. Setting 'down' or 'up' to 0 causes no loss, whereas 1 discards all messages (not very useful).
Nested Class Summary | |
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static class |
DISCARD.DiscardHeader
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Field Summary |
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Fields inherited from class org.jgroups.stack.Protocol |
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down_prot, log, props, stack, stats, up_prot |
Constructor Summary | |
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DISCARD()
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Method Summary | |
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void |
addIgnoreMember(Address sender)
Messages from this sender will get dropped |
java.lang.Object |
down(Event evt)
An event is to be sent down the stack. |
java.util.Map<java.lang.String,java.lang.Object> |
dumpStats()
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int |
getDropDownMulticasts()
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int |
getDropDownUnicasts()
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java.lang.String |
getName()
All protocol names have to be unique ! |
boolean |
isDiscardAll()
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void |
resetIgnoredMembers()
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void |
resetStats()
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void |
setDiscardAll(boolean discard_all)
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void |
setDropDownMulticasts(int drop_down_multicasts)
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void |
setDropDownUnicasts(int drop_down_unicasts)
Drop the next N unicasts down the stack |
boolean |
setProperties(java.util.Properties props)
Configures the protocol initially. |
void |
start()
This method is called on a Channel.connect(String) . |
java.lang.Object |
up(Event evt)
An event was received from the layer below. |
Methods inherited from class org.jgroups.stack.Protocol |
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destroy, downThreadEnabled, enableStats, getDownProtocol, getProperties, getProtocolStack, getThreadFactory, getTransport, getUpProtocol, init, printStats, providedDownServices, providedUpServices, requiredDownServices, requiredUpServices, setDownProtocol, setPropertiesInternal, setProtocolStack, setUpProtocol, statsEnabled, stop, upThreadEnabled |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Constructor Detail |
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public DISCARD()
Method Detail |
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public java.lang.String getName()
getName
in class Protocol
public boolean isDiscardAll()
public void setDiscardAll(boolean discard_all)
public boolean setProperties(java.util.Properties props)
Protocol
"loopback=false;unicast_inport=4444"
setProperties
in class Protocol
public int getDropDownUnicasts()
public void setDropDownUnicasts(int drop_down_unicasts)
drop_down_unicasts
- public int getDropDownMulticasts()
public void setDropDownMulticasts(int drop_down_multicasts)
public void addIgnoreMember(Address sender)
public void resetIgnoredMembers()
public void start() throws java.lang.Exception
Protocol
Channel.connect(String)
. Starts work.
Protocols are connected and queues are ready to receive events.
Will be called from bottom to top. This call will replace
the START and START_OK events.
start
in class Protocol
java.lang.Exception
- Thrown if protocol cannot be started successfully. This will cause the ProtocolStack
to fail, so Channel.connect(String)
will throw an exceptionpublic java.lang.Object up(Event evt)
Protocol
down_prot.down()
or c) the event (or another event) is sent up
the stack using up_prot.up()
.
up
in class Protocol
public java.lang.Object down(Event evt)
Protocol
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()
.
down
in class Protocol
public void resetStats()
resetStats
in class Protocol
public java.util.Map<java.lang.String,java.lang.Object> dumpStats()
dumpStats
in class Protocol
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