org.cloudbus.cloudsim.provisioners

Class ResourceProvisionerAbstract

java.lang.Object

org.cloudbus.cloudsim.provisioners.ResourceProvisionerAbstract

All Implemented Interfaces:

ResourceProvisioner

Direct Known Subclasses:

ResourceProvisionerSimple

public abstract class ResourceProvisionerAbstract
extends Object
implements ResourceProvisioner

An abstract class that implements the basic features of a provisioning policy used by a Host to provide a given resource to its virtual machines.

Since:

3.0.4

Author:

Rodrigo N. Calheiros, Anton Beloglazov, Manoel Campos da Silva Filho

See Also:

ResourceProvisioner

Field Summary

Fields inherited from interface org.cloudbus.cloudsim.provisioners.ResourceProvisioner

NULL

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	ResourceProvisionerAbstract() Creates a new ResourceManageable Provisioner for which the resource must be set further.
	ResourceProvisionerAbstract(ResourceManageable resource) Creates a new ResourceManageable Provisioner.

Method Summary

Modifier and Type	Method and Description
void	deallocateResourceForAllVms() Releases all the allocated amount of the resource used by all VMs.
protected abstract long	deallocateResourceForVmAndSetAllocationMapEntryToZero(Vm vm) Deallocate the resource for the given VM, without removing the VM fro the allocation map.
long	getAllocatedResourceForVm(Vm vm) Gets the amount of resource allocated to a given VM from the physical resource
long	getAvailableResource() Gets the amount of free available physical resource from the host that the provisioner can allocate to VMs.
long	getCapacity() Gets the total capacity of the physical resource from the Host that the provisioner manages.
ResourceManageable	getResource() Gets the resource being managed by the provisioner, such as Ram, Pe, Bandwidth, etc.
protected Map<Vm,Long>	getResourceAllocationMap() Gets the VM resource allocation map, where each key is a VM and each value is the amount of resource allocated to that VM.
protected Class<? extends ResourceManageable>	getResourceClass() Gets the class of the resource that this provisioner manages.
long	getTotalAllocatedResource() Gets the total amount of resource allocated to all VMs from the physical resource
boolean	isResourceAllocatedToVm(Vm vm) Checks if the resource the provisioner manages is allocated to a given Vm.
void	setResource(ResourceManageable resource) Sets the resource to be managed by the provisioner, such as Ram, Pe, Bandwidth, etc.

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.cloudbus.cloudsim.provisioners.ResourceProvisioner

allocateResourceForVm, allocateResourceForVm, deallocateResourceForVm, isSuitableForVm

Constructor Detail

ResourceProvisionerAbstract

protected ResourceProvisionerAbstract()

Creates a new ResourceManageable Provisioner for which the resource must be set further.

ResourceProvisionerAbstract

public ResourceProvisionerAbstract(ResourceManageable resource)

Creates a new ResourceManageable Provisioner.

Parameters:

resource - The resource to be managed by the provisioner

Method Detail

getAllocatedResourceForVm

public long getAllocatedResourceForVm(Vm vm)

Description copied from interface: ResourceProvisioner

Gets the amount of resource allocated to a given VM from the physical resource

Specified by:

getAllocatedResourceForVm in interface ResourceProvisioner

Parameters:

vm - the VM

Returns:

the allocated resource for the VM

deallocateResourceForAllVms

public void deallocateResourceForAllVms()

Description copied from interface: ResourceProvisioner

Releases all the allocated amount of the resource used by all VMs.

Specified by:

deallocateResourceForAllVms in interface ResourceProvisioner

deallocateResourceForVmAndSetAllocationMapEntryToZero

protected abstract long deallocateResourceForVmAndSetAllocationMapEntryToZero(Vm vm)

Deallocate the resource for the given VM, without removing the VM fro the allocation map. The resource usage of the VM entry on the allocation map is just set to 0.

Parameters:

vm - the VM to deallocate resource

Returns:

the amount of allocated VM resource or zero if VM is not found

getResource

public ResourceManageable getResource()

Description copied from interface: ResourceProvisioner

Gets the resource being managed by the provisioner, such as Ram, Pe, Bandwidth, etc.

Specified by:

getResource in interface ResourceProvisioner

Returns:

the resource managed by this provisioner

setResource

public final void setResource(ResourceManageable resource)

Description copied from interface: ResourceProvisioner

Sets the resource to be managed by the provisioner, such as Ram, Pe, Bandwidth, etc.

Specified by:

setResource in interface ResourceProvisioner

Parameters:

resource - the resource managed by this provisioner

getResourceClass

protected Class<? extends ResourceManageable> getResourceClass()

Gets the class of the resource that this provisioner manages.

Returns:

the resource class

getResourceAllocationMap

protected Map<Vm,Long> getResourceAllocationMap()

Gets the VM resource allocation map, where each key is a VM and each value is the amount of resource allocated to that VM.

Returns:

the resource allocation Map

getCapacity

public long getCapacity()

Description copied from interface: ResourceProvisioner

Gets the total capacity of the physical resource from the Host that the provisioner manages.

Specified by:

getCapacity in interface ResourceProvisioner

Returns:

the total physical resource capacity

getTotalAllocatedResource

public long getTotalAllocatedResource()

Description copied from interface: ResourceProvisioner

Gets the total amount of resource allocated to all VMs from the physical resource

Specified by:

getTotalAllocatedResource in interface ResourceProvisioner

Returns:

the total allocated resource among all VMs

getAvailableResource

public long getAvailableResource()

Description copied from interface: ResourceProvisioner

Gets the amount of free available physical resource from the host that the provisioner can allocate to VMs.

Specified by:

getAvailableResource in interface ResourceProvisioner

Returns:

the amount of free available physical resource

isResourceAllocatedToVm

public boolean isResourceAllocatedToVm(Vm vm)

Description copied from interface: ResourceProvisioner

Checks if the resource the provisioner manages is allocated to a given Vm.

Specified by:

isResourceAllocatedToVm in interface ResourceProvisioner

Parameters:

vm - the VM to check if the resource is allocated to

Returns:

true if the resource is allocated to the VM, false otherwise