org.cloudbus.cloudsim.hosts.network

Class NetworkHost

java.lang.Object

org.cloudbus.cloudsim.hosts.HostSimple

org.cloudbus.cloudsim.hosts.network.NetworkHost

All Implemented Interfaces:

Comparable<Host>, ChangeableId, Identificable, Machine, Host, Resourceful

public class NetworkHost
extends HostSimple

NetworkHost class extends HostSimple to support simulation of networked datacenters. It executes actions related to management of packets (sent and received) other than that of virtual machines (e.g., creation and destruction). A host has a defined policy for provisioning memory and bw, as well as an allocation policy for PE's to virtual machines.

Please refer to following publication for more details:

• Saurabh Kumar Garg and Rajkumar Buyya, NetworkCloudSim: Modelling Parallel Applications in Cloud Simulations, Proceedings of the 4th IEEE/ACM International Conference on Utility and Cloud Computing (UCC 2011, IEEE CS Press, USA), Melbourne, Australia, December 5-7, 2011.

Since:

CloudSim Toolkit 3.0

Author:

Saurabh Kumar Garg

Field Summary

Fields inherited from interface org.cloudbus.cloudsim.hosts.Host

NULL

Constructor Summary

Constructors

Constructor and Description
NetworkHost(int id, ResourceProvisioner ramProvisioner, ResourceProvisioner bwProvisioner, long storage, List<Pe> peList, VmScheduler vmScheduler) Deprecated. Use the other available constructors with less parameters and set the remaining ones using the respective setters. This constructor will be removed in future versions.
NetworkHost(long ram, long bw, long storage, List<Pe> peList) Creates a NetworkHost.

Method Summary

Modifier and Type	Method and Description
void	addReceivedNetworkPacket(HostPacket hostPacket) Adds a packet to the list of received packets in order to further submit them to the respective target VMs and Cloudlets.
boolean	createVm(Vm vm) Try to allocate resources to a new VM in the Host.
double	getBandwidth() Gets the Host bandwidth capacity in Megabits/s.
EdgeSwitch	getEdgeSwitch()
double	getMaxUtilizationAmongVmsPes(Vm vm) Gets the maximum utilization among the PEs of a given VM.
int	getTotalDataTransferBytes()
void	setBandwidth(double bandwidth) Sets the Host bandwidth capacity in Megabits/s.
void	setEdgeSwitch(EdgeSwitch sw)
double	updateProcessing(double currentTime) Updates the processing of VMs running on this Host, that makes the processing of cloudlets inside such VMs to be updated.

Methods inherited from class org.cloudbus.cloudsim.hosts.HostSimple

addMigratingInVm, addOnUpdateProcessingListener, addVmMigratingOut, addVmToList, allocatePesForVm, compareTo, computeCpuUtilizationPercent, createTemporaryVm, deallocatePesForVm, deallocateResourcesOfAllVms, deallocateResourcesOfVm, destroyAllVms, destroyTemporaryVm, destroyVm, equals, getAllocatedMipsForVm, getAvailableMips, getAvailableStorage, getBw, getBwProvisioner, getDatacenter, getId, getMaxAvailableMips, getMips, getNumberOfFailedPes, getNumberOfFreePes, getNumberOfPes, getNumberOfWorkingPes, getPeList, getProvisioner, getRam, getRamProvisioner, getResources, getSimulation, getStorage, getTotalAllocatedMipsForVm, getTotalMipsCapacity, getUtilizationOfBw, getUtilizationOfCpu, getUtilizationOfCpuMips, getUtilizationOfRam, getVm, getVmList, getVmScheduler, getVmsMigratingIn, getVmsMigratingOut, getWorkingPeList, hashCode, isActive, isFailed, isSuitableForVm, reallocateMigratingInVms, removeMigratingInVm, removeOnUpdateProcessingListener, removeVmFromList, removeVmMigratingIn, removeVmMigratingOut, setActive, setBwProvisioner, setDatacenter, setFailed, setId, setPeList, setPeStatus, setRamProvisioner, setSimulation, setVmScheduler, toString

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.cloudbus.cloudsim.resources.Resourceful

getResource

Constructor Detail

NetworkHost

public NetworkHost(long ram,
                   long bw,
                   long storage,
                   List<Pe> peList)

Creates a NetworkHost.

Parameters:

ram - the RAM capacity in Megabytes

bw - the Bandwidth (BW) capacity in Megabits/s

storage - the storage capacity in Megabytes

peList - the host's Pe list

NetworkHost

@Deprecated
public NetworkHost(int id,
                               ResourceProvisioner ramProvisioner,
                               ResourceProvisioner bwProvisioner,
                               long storage,
                               List<Pe> peList,
                               VmScheduler vmScheduler)

Deprecated. Use the other available constructors with less parameters and set the remaining ones using the respective setters. This constructor will be removed in future versions.

Creates a NetworkHost with the given parameters.

Parameters:

id - the id

ramProvisioner - the ram provisioner

bwProvisioner - the bw provisioner

storage - the storage capacity

peList - the host's PEs list

vmScheduler - the VM scheduler

Method Detail

updateProcessing

public double updateProcessing(double currentTime)

Description copied from interface: Host

Updates the processing of VMs running on this Host, that makes the processing of cloudlets inside such VMs to be updated.

Specified by:

updateProcessing in interface Host

Overrides:

updateProcessing in class HostSimple

Parameters:

currentTime - the current time

Returns:

the predicted completion time of the earliest finishing cloudlet (which is a relative delay from the current simulation time), or Double.MAX_VALUE if there is no next Cloudlet to execute

createVm

public boolean createVm(Vm vm)

Try to allocate resources to a new VM in the Host.

It also creates and sets a PacketScheduler for each Vm that doesn't have one already.

Specified by:

createVm in interface Host

Overrides:

createVm in class HostSimple

Parameters:

vm - Vm being started

Returns:

$true if the VM could be started in the host; $false otherwise

getMaxUtilizationAmongVmsPes

public double getMaxUtilizationAmongVmsPes(Vm vm)

Gets the maximum utilization among the PEs of a given VM.

Parameters:

vm - The VM to get its PEs maximum utilization

Returns:

The maximum utilization among the PEs of the VM.

getEdgeSwitch

public EdgeSwitch getEdgeSwitch()

setEdgeSwitch

public void setEdgeSwitch(EdgeSwitch sw)

getTotalDataTransferBytes

public int getTotalDataTransferBytes()

addReceivedNetworkPacket

public void addReceivedNetworkPacket(HostPacket hostPacket)

Adds a packet to the list of received packets in order to further submit them to the respective target VMs and Cloudlets.

Parameters:

hostPacket - received network packet

getBandwidth

public double getBandwidth()

Gets the Host bandwidth capacity in Megabits/s.

Returns:

setBandwidth

public void setBandwidth(double bandwidth)

Sets the Host bandwidth capacity in Megabits/s.

Parameters:

bandwidth - the bandwidth to set