Package org.jgroups.protocols

Class FD_PING

java.lang.Object

org.jgroups.stack.Protocol

org.jgroups.protocols.FD

org.jgroups.protocols.FD_PING

public class FD_PING
extends FD

Protocol which uses an executable (e.g. /sbin/ping, or a script) to check whether a given host is up or not, taking 1 argument; the host name of the host to be pinged. Property 'cmd' determines the program to be executed (use a fully qualified name if the program is not on the path).

Version:

$Id: FD_PING.java,v 1.4.4.1 2008/01/22 10:01:20 belaban Exp $

Author:

Bela Ban

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
protected static class	FD_PING.Pinger
protected class	FD_PING.PingMonitor	Executes the ping command.

Nested classes/interfaces inherited from class org.jgroups.protocols.FD

FD.Broadcaster, FD.BroadcastTask, FD.FdHeader, FD.Monitor

Field Summary

Fields inherited from class org.jgroups.protocols.FD

bcast_task, lock, num_heartbeats, num_suspect_events

Fields inherited from class org.jgroups.stack.Protocol

down_prot, log, props, stack, stats, up_prot

Constructor Summary

Constructors

Constructor	Description
FD_PING()

Method Summary

Modifier and Type	Method	Description
protected FD.Monitor	createMonitor()
java.lang.String	getName()
boolean	setProperties(java.util.Properties props)	Configures the protocol initially.

Methods inherited from class org.jgroups.protocols.FD

down, getCurrentNumTries, getLocalAddress, getMaxTries, getMembers, getNumberOfHeartbeatsSent, getNumSuspectEventsGenerated, getPingableMembers, getPingDest, getTimeout, init, isShun, printSuspectHistory, resetStats, setMaxTries, setShun, setTimeout, stop, up

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from class org.jgroups.stack.Protocol

destroy, downThreadEnabled, dumpStats, enableStats, getDownProtocol, getProperties, getProtocolStack, getThreadFactory, getTransport, getUpProtocol, printStats, providedDownServices, providedUpServices, requiredDownServices, requiredUpServices, setDownProtocol, setPropertiesInternal, setProtocolStack, setUpProtocol, start, statsEnabled, upThreadEnabled

Constructor Detail

FD_PING

public FD_PING()

Method Detail

getName

public java.lang.String getName()

Overrides:

getName in class FD

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 class FD

createMonitor

protected FD.Monitor createMonitor()