Package 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>, AbstractMachine, ChangeableId, Identifiable, Machine, ResourceStatsComputer<HostResourceStats>, Host, PowerAware<PowerModelHost>, 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 class org.cloudbus.cloudsim.hosts.HostSimple

cpuUtilizationStats

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

DEF_IDLE_SHUTDOWN_DEADLINE, NULL

Constructor Summary

Constructors

Constructor	Description
NetworkHost(long ram, long bw, long storage, List<Pe> peList)	Creates and powers on a NetworkHost using a VmSchedulerSpaceShared as default.

Method Summary

Modifier and Type	Method	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.
EdgeSwitch	getEdgeSwitch()	Gets the Switch the Host is directly connected to.
int	getTotalDataTransferBytes()
void	setEdgeSwitch(EdgeSwitch edgeSwitch)	Sets the Switch the Host is directly connected to.
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, addOnShutdownListener, addOnStartupListener, addOnUpdateProcessingListener, addVmMigratingOut, addVmToCreatedList, addVmToList, compareTo, createTemporaryVm, deallocateResourcesOfAllVms, deallocateResourcesOfVm, destroyAllVms, destroyTemporaryVm, destroyVm, disableStateHistory, enableStateHistory, enableUtilizationStats, equals, getAllocatedMipsForVm, getAvailableStorage, getBusyPeList, getBusyPesNumber, getBusyPesPercent, getBusyPesPercent, getBw, getBwProvisioner, getBwUtilization, getCpuMipsUtilization, getCpuPercentUtilization, getCpuUtilizationStats, getDatacenter, getDefaultBwCapacity, getDefaultRamCapacity, getDefaultStorageCapacity, getFailedPesNumber, getFinishedVms, getFirstStartTime, getFreePeList, getFreePesNumber, getId, getIdleShutdownDeadline, getLastBusyTime, getMigratableVms, getMips, getNumberOfPes, getPeList, getPowerModel, getProvisioner, getRam, getRamProvisioner, getRamUtilization, getResources, getShutdownTime, getSimulation, getStartTime, getStateHistory, getStorage, getSuitabilityFor, getTotalAllocatedMips, getTotalAllocatedMipsForVm, getTotalAvailableMips, getTotalMipsCapacity, getTotalUpTime, getTotalUpTimeHours, getUpTime, getUpTimeHours, getVmCreatedList, getVmList, getVmScheduler, getVmsMigratingIn, getVmsMigratingOut, getWorkingPeList, getWorkingPesNumber, hasEverStarted, hashCode, hasMigratingVms, isActive, isFailed, isLazySuitabilityEvaluation, isStateHistoryEnabled, isSuitableForVm, reallocateMigratingInVms, removeMigratingInVm, removeOnShutdownListener, removeOnStartupListener, removeOnUpdateProcessingListener, removeVmMigratingOut, setActive, setBwProvisioner, setDatacenter, setDefaultBwCapacity, setDefaultRamCapacity, setDefaultStorageCapacity, setFailed, setId, setIdleShutdownDeadline, setLazySuitabilityEvaluation, setPeStatus, setPowerModel, setRamProvisioner, setShutdownTime, setSimulation, setStartTime, setVmScheduler, toString

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.cloudbus.cloudsim.core.AbstractMachine

getIdleInterval, isIdle, isIdleEnough

Methods inherited from interface org.cloudbus.cloudsim.core.Machine

getExpectedRelativeCpuUtilization, getRelativeBwUtilization, getRelativeCpuUtilization, getRelativeMipsCapacityPercent, getRelativeRamUtilization

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

getResource

Constructor Details

NetworkHost

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

Creates and powers on a NetworkHost using a VmSchedulerSpaceShared as default.

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

Method Details

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 CloudletTaskScheduler 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

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

getEdgeSwitch

public EdgeSwitch getEdgeSwitch()

Gets the Switch the Host is directly connected to.

Returns:

setEdgeSwitch

public void setEdgeSwitch(EdgeSwitch edgeSwitch)

Sets the Switch the Host is directly connected to. This method is to be called only by the EdgeSwitch.connectHost(NetworkHost) method.

Parameters:

edgeSwitch - the Switch to set