com.bytex.snamp.supervision.elasticity.policies

Class GroovyScalingPolicy

java.lang.Object

groovy.lang.GroovyObjectSupport

groovy.lang.Script

com.bytex.snamp.scripting.groovy.Scriptlet

com.bytex.snamp.supervision.elasticity.policies.GroovyScalingPolicy

All Implemented Interfaces:

com.bytex.snamp.Aggregator, com.bytex.snamp.scripting.groovy.ScriptingAPI, com.bytex.snamp.Stateful, com.bytex.snamp.supervision.elasticity.ScalingPolicy, groovy.lang.GroovyObject

public abstract class GroovyScalingPolicy
extends com.bytex.snamp.scripting.groovy.Scriptlet
implements ScalingPolicy, com.bytex.snamp.Aggregator

Represents Groovy-based voter for scaling process.

Since:

2.0

Version:

2.0

Author:

Roman Sakno

Field Summary

Fields inherited from interface com.bytex.snamp.supervision.elasticity.policies.ScalingPolicy

VOICELESS

Fields inherited from interface com.bytex.snamp.Aggregator

EMPTY

Constructor Summary

Constructors

Constructor and Description
GroovyScalingPolicy()

Method Summary

Modifier and Type	Method and Description
com.bytex.snamp.Aggregator	compose(com.bytex.snamp.Aggregator other)
double	evaluate(ScalingPolicyEvaluationContext context) Evaluates scaling policy and obtain vote weight.
protected ScalingPolicyEvaluationContext	getContext()
Object	getProperty(String property)
Set<String>	getResources()
<T> Optional<T>	queryObject(Class<T> objectType)
void	reset() Resets internal state of the object.

Methods inherited from class com.bytex.snamp.scripting.groovy.Scriptlet

addNotificationListener, addNotificationListener, getCommunicator, getLogger, getResourceAttribute, getResourceAttributeInfo, getResourceConfiguration, getResourceNotificationInfo, invokeDslStatement, isActiveClusterNode, removeNotificationListener, setBundleContext, setResourceAttribute

Methods inherited from class groovy.lang.Script

evaluate, evaluate, getBinding, invokeMethod, print, printf, printf, println, println, run, run, setBinding, setProperty

Methods inherited from class groovy.lang.GroovyObjectSupport

getMetaClass, setMetaClass

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.bytex.snamp.scripting.groovy.ScriptingAPI

createTimer, schedule

Methods inherited from interface groovy.lang.GroovyObject

getMetaClass, invokeMethod, setMetaClass, setProperty

Constructor Detail

GroovyScalingPolicy

public GroovyScalingPolicy()

Method Detail

reset

public void reset()

Resets internal state of the object.

Specified by:

reset in interface com.bytex.snamp.Stateful

getResources

public final Set<String> getResources()

Specified by:

getResources in interface com.bytex.snamp.scripting.groovy.ScriptingAPI

Overrides:

getResources in class com.bytex.snamp.scripting.groovy.Scriptlet

getProperty

public final Object getProperty(String property)

Specified by:

getProperty in interface groovy.lang.GroovyObject

Overrides:

getProperty in class groovy.lang.Script

getContext

protected final ScalingPolicyEvaluationContext getContext()

evaluate

public final double evaluate(ScalingPolicyEvaluationContext context)

Description copied from interface: ScalingPolicy

Evaluates scaling policy and obtain vote weight.

Parameters:

context - An object containing all necessary data for voting.

Returns:

Vote weight: >0 - for scale-out; <0 - for scale-in

queryObject

public final <T> Optional<T> queryObject(@Nonnull
                                         Class<T> objectType)

Specified by:

queryObject in interface com.bytex.snamp.Aggregator

compose

@Nonnull
public final com.bytex.snamp.Aggregator compose(@Nonnull
                                                         com.bytex.snamp.Aggregator other)

Specified by:

compose in interface com.bytex.snamp.Aggregator