Package org.jgroups.protocols
Class SOS
- java.lang.Object
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- org.jgroups.stack.Protocol
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- org.jgroups.protocols.SOS
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public class SOS extends Protocol
Periodically fetches some attributes and writes them to a file (https://issues.redhat.com/browse/JGRP-2402)- Since:
- 4.2.2, 5.0.0
- Author:
- Bela Ban
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Nested Class Summary
Nested Classes Modifier and Type Class Description protected class
SOS.DumperTask
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Field Summary
Fields Modifier and Type Field Description protected java.lang.String
cmd
protected java.lang.String
config
protected java.lang.String
filename
protected java.util.Set<DiagnosticsHandler.ProbeHandler>
handlers
protected long
interval
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Fields inherited from class org.jgroups.stack.Protocol
after_creation_hook, down_prot, ergonomics, id, log, stack, stats, up_prot
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Constructor Summary
Constructors Constructor Description SOS()
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description java.lang.String
exec()
java.lang.String
getFilename()
protected java.io.InputStream
getInput(java.lang.String name)
long
getInterval()
protected java.lang.String
getMetadata()
void
init()
Called after instance has been created (null constructor) and before protocol is started.SOS
read()
SOS
setCommand(java.lang.String filename)
SOS
setFileName(java.lang.String f)
SOS
setInterval(long i)
void
start()
This method is called on aJChannel.connect(String)
.void
stop()
This method is called on aJChannel.disconnect()
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Methods inherited from class org.jgroups.stack.Protocol
accept, afterCreationHook, destroy, down, down, enableStats, getConfigurableObjects, getDownProtocol, getDownServices, getId, getIdsAbove, getLevel, getLog, getName, getProtocolStack, getSocketFactory, getThreadFactory, getTransport, getUpProtocol, getUpServices, getValue, isErgonomics, level, parse, providedDownServices, providedUpServices, requiredDownServices, requiredUpServices, resetStatistics, resetStats, setDownProtocol, setErgonomics, setId, setLevel, setProtocolStack, setSocketFactory, setUpProtocol, setValue, statsEnabled, up, up, up
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Field Detail
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filename
protected java.lang.String filename
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interval
protected long interval
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cmd
protected java.lang.String cmd
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config
protected java.lang.String config
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handlers
protected java.util.Set<DiagnosticsHandler.ProbeHandler> handlers
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Method Detail
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getFilename
public java.lang.String getFilename()
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setFileName
public SOS setFileName(java.lang.String f)
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getInterval
public long getInterval()
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setInterval
public SOS setInterval(long i)
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setCommand
public SOS setCommand(java.lang.String filename) throws java.io.IOException
- Throws:
java.io.IOException
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read
public SOS read() throws java.io.IOException
- Throws:
java.io.IOException
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init
public void init() throws java.lang.Exception
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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start
public void start() throws java.lang.Exception
Description copied from class:Protocol
This method is called on aJChannel.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.- Overrides:
start
in classProtocol
- Throws:
java.lang.Exception
- Thrown if protocol cannot be started successfully. This will cause the ProtocolStack to fail, soJChannel.connect(String)
will throw an exception
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stop
public void stop()
Description copied from class:Protocol
This method is called on aJChannel.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
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exec
public java.lang.String exec()
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getMetadata
protected java.lang.String getMetadata()
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getInput
protected java.io.InputStream getInput(java.lang.String name) throws java.io.FileNotFoundException
- Throws:
java.io.FileNotFoundException
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