Package com.yahoo.config.subscription.impl

Class JRTConfigSubscription<T extends com.yahoo.config.ConfigInstance>

java.lang.Object

com.yahoo.config.subscription.impl.ConfigSubscription<T>

com.yahoo.config.subscription.impl.JRTConfigSubscription<T>

Direct Known Subclasses:

GenericJRTConfigSubscription

public class JRTConfigSubscription<T extends com.yahoo.config.ConfigInstance>
extends ConfigSubscription<T>

A config subscription for a config instance, gets config using RPC from a config source (config proxy or config server).

Author:

vegardh

Nested Class Summary

Nested classes/interfaces inherited from class com.yahoo.config.subscription.impl.ConfigSubscription

ConfigSubscription.ConfigState<T extends com.yahoo.config.ConfigInstance>

Field Summary

Fields inherited from class com.yahoo.config.subscription.impl.ConfigSubscription

configClass, key, log

Constructor Summary

Constructors

Constructor	Description
JRTConfigSubscription(ConfigKey<T> key, JRTConfigRequester requester, TimingValues timingValues)

Method Summary

Modifier and Type	Method	Description
void	close()
boolean	nextConfig(long timeoutMillis)	Polls this subscription for a change.
void	reload(long generation)	Force this into the given generation, used in testing
JRTConfigRequester	requester()
protected void	setNewConfig(JRTClientConfigRequest jrtReq)
protected void	setNewConfigAndGeneration(JRTClientConfigRequest jrtReq)
boolean	subscribe(long timeout)	Will block until the next ConfigSubscription.nextConfig(long) is guaranteed to return an answer (or throw) immediately (i.e.
TimingValues	timingValues()	The timing values of this

Methods inherited from class com.yahoo.config.subscription.impl.ConfigSubscription

checkReloaded, equals, get, getConfigClass, getConfigState, getDefContent, getException, getKey, isClosed, isConfigChangedAndReset, setConfigIfChanged, setConfigIncGen, setException, toString

Methods inherited from class java.lang.Object

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

Constructor Detail

JRTConfigSubscription

public JRTConfigSubscription(ConfigKey<T> key,
                             JRTConfigRequester requester,
                             TimingValues timingValues)

Method Detail

nextConfig

public boolean nextConfig(long timeoutMillis)

Description copied from class: ConfigSubscription

Polls this subscription for a change. The method is guaranteed to use all of the given timeout before returning false. It will also take into account a user-set generation, that can be set by ConfigSubscriber.reload(long).

Specified by:

nextConfig in class ConfigSubscription<T extends com.yahoo.config.ConfigInstance>

Parameters:

timeoutMillis - in milliseconds

Returns:

false if timed out, true if generation or config or ConfigSubscription.exception changed. If true, the ConfigSubscription.config field will be set also. has changed

setNewConfig

protected void setNewConfig(JRTClientConfigRequest jrtReq)

setNewConfigAndGeneration

protected void setNewConfigAndGeneration(JRTClientConfigRequest jrtReq)

subscribe

public boolean subscribe(long timeout)

Description copied from class: ConfigSubscription

Will block until the next ConfigSubscription.nextConfig(long) is guaranteed to return an answer (or throw) immediately (i.e. not block)

Specified by:

subscribe in class ConfigSubscription<T extends com.yahoo.config.ConfigInstance>

Parameters:

timeout - in milliseconds

Returns:

false if timed out

close

public void close()

Overrides:

close in class ConfigSubscription<T extends com.yahoo.config.ConfigInstance>

timingValues

public TimingValues timingValues()

The timing values of this

Returns:

timing values

requester

public JRTConfigRequester requester()

reload

public void reload(long generation)

Description copied from class: ConfigSubscription

Force this into the given generation, used in testing

Overrides:

reload in class ConfigSubscription<T extends com.yahoo.config.ConfigInstance>

Parameters:

generation - a config generation