com.netflix.loadbalancer

Class PollingServerListUpdater

java.lang.Object

com.netflix.loadbalancer.PollingServerListUpdater

All Implemented Interfaces:

ServerListUpdater

public class PollingServerListUpdater
extends java.lang.Object
implements ServerListUpdater

A default strategy for the dynamic server list updater to update. (refactored and moved here from DynamicServerListLoadBalancer)

Nested Class Summary

Nested classes/interfaces inherited from interface com.netflix.loadbalancer.ServerListUpdater

ServerListUpdater.UpdateAction

Constructor Summary

Constructors

Constructor and Description
PollingServerListUpdater()
PollingServerListUpdater(com.netflix.client.config.IClientConfig clientConfig)
PollingServerListUpdater(long initialDelayMs, long refreshIntervalMs)

Method Summary

Modifier and Type	Method and Description
int	getCoreThreads()
long	getDurationSinceLastUpdateMs()
java.lang.String	getLastUpdate()
int	getNumberMissedCycles()
void	start(ServerListUpdater.UpdateAction updateAction) start the serverList updater with the given update action This call should be idempotent.
void	stop() stop the serverList updater.

Methods inherited from class java.lang.Object

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

Constructor Detail

PollingServerListUpdater

public PollingServerListUpdater()

PollingServerListUpdater

public PollingServerListUpdater(com.netflix.client.config.IClientConfig clientConfig)

PollingServerListUpdater

public PollingServerListUpdater(long initialDelayMs,
                                long refreshIntervalMs)

Method Detail

start

public void start(ServerListUpdater.UpdateAction updateAction)

Description copied from interface: ServerListUpdater

start the serverList updater with the given update action This call should be idempotent.

Specified by:

start in interface ServerListUpdater

stop

public void stop()

Description copied from interface: ServerListUpdater

stop the serverList updater. This call should be idempotent

Specified by:

stop in interface ServerListUpdater

getLastUpdate

public java.lang.String getLastUpdate()

Specified by:

getLastUpdate in interface ServerListUpdater

Returns:

the last update timestamp as a Date string

getDurationSinceLastUpdateMs

public long getDurationSinceLastUpdateMs()

Specified by:

getDurationSinceLastUpdateMs in interface ServerListUpdater

Returns:

the number of ms that has elapsed since last update

getNumberMissedCycles

public int getNumberMissedCycles()

Specified by:

getNumberMissedCycles in interface ServerListUpdater

Returns:

the number of update cycles missed, if valid

getCoreThreads

public int getCoreThreads()

Specified by:

getCoreThreads in interface ServerListUpdater

Returns:

the number of threads used, if vaid