Package org.cloudsimplus.autoscaling

Class VerticalVmScalingSimple

java.lang.Object

org.cloudsimplus.autoscaling.VmScalingAbstract

org.cloudsimplus.autoscaling.VerticalVmScalingAbstract

org.cloudsimplus.autoscaling.VerticalVmScalingSimple

All Implemented Interfaces:

VerticalVmScaling, VmScaling

public class VerticalVmScalingSimple
extends VerticalVmScalingAbstract

A VerticalVmScaling implementation which allows a DatacenterBroker to perform on demand up or down scaling for some Vm resource, such as Ram, Pe or Bandwidth.

For each resource that is required to be scaled, a distinct VerticalVmScaling instance must be assigned to the VM to be scaled.

Since:

CloudSim Plus 1.1.0

Author:

Manoel Campos da Silva Filho

Field Summary

Fields inherited from interface org.cloudsimplus.autoscaling.VerticalVmScaling

NULL

Fields inherited from interface org.cloudsimplus.autoscaling.VmScaling

LOGGER, NULL

Constructor Summary

Constructors

Constructor	Description
VerticalVmScalingSimple(Class<? extends ResourceManageable> resourceClassToScale, double scalingFactor)	Creates a VerticalVmScalingSimple with a ResourceScalingGradual scaling type.

Method Summary

Modifier and Type	Method	Description
boolean	isVmOverloaded()	Checks if the Vm is overloaded or not, based on the VerticalVmScaling.getUpperThresholdFunction().
boolean	isVmUnderloaded()	Checks if the Vm is underloaded or not, based on the VerticalVmScaling.getLowerThresholdFunction().

Methods inherited from class org.cloudsimplus.autoscaling.VerticalVmScalingAbstract

allocateResourceForVm, getAllocatedResource, getLowerThresholdFunction, getResource, getResourceAmountToScale, getResourceClass, getResourceUsageThresholdFunction, getScalingFactor, getUpperThresholdFunction, isNotHostResourceAvailable, logResourceUnavailable, requestUpScaling, requestUpScalingIfPredicateMatches, setLowerThresholdFunction, setResourceScaling, setScalingFactor, setUpperThresholdFunction, setVm

Methods inherited from class org.cloudsimplus.autoscaling.VmScalingAbstract

getVm, isTimeToCheckPredicate, setLastProcessingTime

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.cloudsimplus.autoscaling.VmScaling

getVm

Constructor Details

VerticalVmScalingSimple

public VerticalVmScalingSimple(Class<? extends ResourceManageable> resourceClassToScale,
 double scalingFactor)

Creates a VerticalVmScalingSimple with a ResourceScalingGradual scaling type.

Parameters:

resourceClassToScale - the class of Vm resource that this scaling object will request up or down scaling (such as Ram.class, Bandwidth.class or Processor.class).

scalingFactor - the factor (a percentage value in scale from 0 to 1) that will be used to scale a Vm resource up or down, whether such a resource is over or underloaded, according to the defined predicates. In the case of up scaling, the value 1 will scale the resource in 100%, doubling its capacity.

See Also:

• VerticalVmScaling.setResourceScaling(ResourceScaling)

Method Details

isVmUnderloaded

public boolean isVmUnderloaded()

Description copied from interface: VerticalVmScaling

Checks if the Vm is underloaded or not, based on the VerticalVmScaling.getLowerThresholdFunction().

Returns:

true if the Vm is underloaded, false otherwise

isVmOverloaded

public boolean isVmOverloaded()

Description copied from interface: VerticalVmScaling

Checks if the Vm is overloaded or not, based on the VerticalVmScaling.getUpperThresholdFunction().

Returns:

true if the Vm is overloaded, false otherwise