Class UtilizationModelAbstract

java.lang.Object

org.cloudsimplus.utilizationmodels.UtilizationModelAbstract

All Implemented Interfaces:

UtilizationModel

Direct Known Subclasses:

UtilizationModelDynamic, UtilizationModelFull, UtilizationModelPlanetLab, UtilizationModelStochastic

public abstract class UtilizationModelAbstract
extends Object
implements UtilizationModel

An abstract class to implement UtilizationModels.

Since:

CloudSim Plus 1.2

Author:

Manoel Campos da Silva Filho

Nested Class Summary

Nested classes/interfaces inherited from interface org.cloudsimplus.utilizationmodels.UtilizationModel

UtilizationModel.Unit

Field Summary

Fields

Modifier and Type	Field	Description
static final double	ALMOST_ZERO	Indicates that values lower or equal to this will be considered as zero.

Fields inherited from interface org.cloudsimplus.utilizationmodels.UtilizationModel

NULL

Constructor Summary

Constructors

Constructor	Description
UtilizationModelAbstract()
UtilizationModelAbstract(@NonNull UtilizationModel.Unit unit)

Method Summary

Modifier and Type	Method	Description
final double	getUtilization()	Gets the expected utilization of resource at the current simulation time.
final double	getUtilization(double time)	Gets the expected utilization of resource at a given simulation time.
protected abstract double	getUtilizationInternal(double time)
protected final void	setUnit(@NonNull UtilizationModel.Unit unit)	Sets the UtilizationModel.Unit in which the resource utilization is defined.
protected void	validateUtilizationField(String fieldName, double fieldValue)	Checks if a given field has a valid value, considering that the minimum value is zero.
protected void	validateUtilizationField(String fieldName, double fieldValue, double minValue)

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.cloudsimplus.utilizationmodels.UtilizationModel

getSimulation, getUnit, isOverCapacityRequestAllowed, setOverCapacityRequestAllowed, setSimulation

Field Details

ALMOST_ZERO

public static final double ALMOST_ZERO

Indicates that values lower or equal to this will be considered as zero. This constant is used to compare utilization values to avoid floating point precision issues.

See Also:

• Constant Field Values

Constructor Details

UtilizationModelAbstract

public UtilizationModelAbstract()

UtilizationModelAbstract

public UtilizationModelAbstract(@NonNull
 @NonNull UtilizationModel.Unit unit)

Method Details

setUnit

protected final void setUnit(@NonNull
 @NonNull UtilizationModel.Unit unit)

Sets the UtilizationModel.Unit in which the resource utilization is defined.

Parameters:

unit - UtilizationModel.Unit to set

getUtilization

public final double getUtilization()

Description copied from interface: UtilizationModel

Gets the expected utilization of resource at the current simulation time. Such a value can be a percentage in scale from 0..1 or an absolute value, depending on the UtilizationModel.getUnit().

It is an expected usage value because the actual Cloudlet resource usage depends on the available Vm resource.

Specified by:

getUtilization in interface UtilizationModel

Returns:

the current resource utilization

See Also:

• UtilizationModel.getUnit()

getUtilization

public final double getUtilization(double time)

Description copied from interface: UtilizationModel

Gets the expected utilization of resource at a given simulation time. Such a value can be a percentage in scale from 0..1 or an absolute value, depending on the UtilizationModel.getUnit().

It is an expected usage value because the actual Cloudlet resource usage depends on the available Vm resource.

Specified by:

getUtilization in interface UtilizationModel

Parameters:

time - the time to get the resource usage.

Returns:

the resource utilization at the given time

See Also:

• UtilizationModel.getUnit()

getUtilizationInternal

protected abstract double getUtilizationInternal(double time)

validateUtilizationField

protected void validateUtilizationField(String fieldName,
 double fieldValue)

Checks if a given field has a valid value, considering that the minimum value is zero.

Parameters:

fieldName - the name of the field to display at the Exception when the value is invalid

fieldValue - the current value of the field

validateUtilizationField

protected void validateUtilizationField(String fieldName,
 double fieldValue,
 double minValue)