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java.lang.Objectorg.jgroups.stack.Protocol
org.jgroups.protocols.VERIFY_SUSPECT
public class VERIFY_SUSPECT
Catches SUSPECT events traveling up the stack. Verifies that the suspected member is really dead. If yes, passes SUSPECT event up the stack, otherwise discards it. Has to be placed somewhere above the FD layer and below the GMS layer (receiver of the SUSPECT event). Note that SUSPECT events may be reordered by this protocol.
Nested Class Summary | |
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static class |
VERIFY_SUSPECT.VerifyHeader
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Field Summary | |
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protected java.lang.String |
bind_interface_str
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Fields inherited from class org.jgroups.stack.Protocol |
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down_prot, ergonomics, id, log, name, stack, stats, up_prot |
Constructor Summary | |
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VERIFY_SUSPECT()
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Method Summary | |
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java.lang.Object |
down(Event evt)
An event is to be sent down the stack. |
void |
init()
Called after instance has been created (null constructor) and before protocol is started. |
void |
run()
Will be started when a suspect is added to the suspects hashtable. |
void |
stop()
This method is called on a Channel.disconnect() . |
java.lang.Object |
up(Event evt)
An event was received from the layer below. |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Field Detail |
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protected java.lang.String bind_interface_str
Constructor Detail |
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public VERIFY_SUSPECT()
Method Detail |
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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 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 void run()
run
in interface java.lang.Runnable
public void init() throws java.lang.Exception
Protocol
init
in class Protocol
java.lang.Exception
- Thrown if protocol cannot be initialized successfully. This will cause the
ProtocolStack to fail, so the channel constructor will throw an exceptionpublic void stop()
Protocol
Channel.disconnect()
. Stops work (e.g. by closing multicast socket).
Will be called from top to bottom. This means that at the time of the method invocation the
neighbor protocol below is still working. This method will replace the
STOP, STOP_OK, CLEANUP and CLEANUP_OK events. The ProtocolStack guarantees that
when this method is called all messages in the down queue will have been flushed
stop
in class Protocol
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