Class NetworkHost

java.lang.Object

org.cloudsimplus.core.StartableAbstract

org.cloudsimplus.core.ExecDelayableAbstract

org.cloudsimplus.hosts.HostAbstract

org.cloudsimplus.hosts.HostSimple

org.cloudsimplus.hosts.network.NetworkHost

All Implemented Interfaces:

Comparable<Host>, ChangeableId, ExecDelayable, Identifiable, Machine<FileStorage>, PhysicalMachine, ResourceStatsComputer<HostResourceStats>, Startable, Host, PowerAware<PowerModelHost>, Resourceful

public class NetworkHost
extends HostSimple

A Host that support simulation of networked Datacenters. It executes actions related to the management of packets (sent and received) besides Vm management (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 the 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

Modifier and Type	Field	Description
static final NetworkHost	NULL

Fields inherited from class org.cloudsimplus.hosts.HostAbstract

activateOnDatacenterStartup, bw, cpuUtilizationStats, datacenter, defaultBwCapacity, defaultRamCapacity, defaultStorageCapacity, disk, id, idleShutdownDeadline, lazySuitabilityEvaluation, onShutdownListeners, onStartupListeners, onUpdateProcessingListeners, powerModel, provisioners, ram, resources, stateHistory, vmCreatedList, vmsMigratingIn, vmsMigratingOut

Fields inherited from interface org.cloudsimplus.hosts.Host

DEF_IDLE_SHUTDOWN_DEADLINE

Fields inherited from interface org.cloudsimplus.core.Startable

NOT_ASSIGNED

Constructor Summary

Constructors

Constructor	Description
NetworkHost(long ram, long bw, long storage, List<Pe> peList)	Creates and starts up 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 to further submit them to the respective target VMs and Cloudlets.
HostSuitability	createVm(Vm vm)	Try to allocate resources to a new VM in the Host.
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.cloudsimplus.hosts.HostSimple

compareTo, toString

Methods inherited from class org.cloudsimplus.hosts.HostAbstract

addMigratingInVm, addOnShutdownListener, addOnStartupListener, addOnUpdateProcessingListener, addVmMigratingOut, addVmToCreatedList, addVmToList, createTemporaryVm, deallocateResourcesOfVm, destroyAllVms, destroyTemporaryVm, destroyVm, destroyVmInternal, enableUtilizationStats, getAllocatedMipsForVm, getAvailableStorage, getBusyPeList, getBusyPesPercent, getBusyPesPercent, getBw, getBwUtilization, getCpuMipsUtilization, getCpuPercentRequested, getCpuPercentUtilization, getFinishedVms, getFreePeList, getMigratableVms, getMips, getPesNumber, getProvisioner, getRam, getRamUtilization, getResources, getStateHistory, getStorage, getSuitabilityFor, getTotalAllocatedMips, getTotalAllocatedMipsForVm, getTotalAvailableMips, getTotalMipsCapacity, getTotalUpTime, getTotalUpTimeHours, getUpTime, getUpTimeHours, getVmCreatedList, getVmList, getVmsMigratingIn, getVmsMigratingOut, getWorkingPeList, hasEverStarted, hasMigratingVms, incBusyPesNumber, incFailedPesNumber, incFreePesNumber, isFinished, isSuitableForVm, onFinish, onStart, processActivation, reallocateMigratingInVms, removeMigratingInVm, removeOnShutdownListener, removeOnStartupListener, removeOnUpdateProcessingListener, removeVmMigratingOut, setActive, setBwProvisioner, setDatacenter, setDefaultBwCapacity, setDefaultRamCapacity, setDefaultStorageCapacity, setFailed, setPeList, setPeStatus, setPowerModel, setRamProvisioner, setVmScheduler, shutdown, updateVmProcessing

Methods inherited from class org.cloudsimplus.core.ExecDelayableAbstract

isShuttingDown, setShutDownDelay, setStartupDelay

Methods inherited from class org.cloudsimplus.core.StartableAbstract

getTotalExecutionTime, setFinishTime, setStartTime

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.cloudsimplus.core.ChangeableId

setId

Methods inherited from interface org.cloudsimplus.core.ExecDelayable

getRemainingStartupTime, getShutdownBeginTime, getShutDownDelay, getStartupCompletionTime, getStartupDelay, isShutDownDelayed, isShuttingDown, isStartingUp, isStartupDelayed, setShutdownBeginTime, setShutDownDelay, setStartupDelay

Methods inherited from interface org.cloudsimplus.hosts.Host

getBusyPesNumber, getBwProvisioner, getCpuUtilizationStats, getDatacenter, getFailedPesNumber, getFinishTime, getFirstStartTime, getFreePesNumber, getIdleShutdownDeadline, getPeList, getPowerModel, getRamProvisioner, getVmScheduler, getWorkingPesNumber, isActive, isFailed, isLazySuitabilityEvaluation, isStateHistoryEnabled, setFinishTime, setIdleShutdownDeadline, setLazySuitabilityEvaluation, setSimulation, setStateHistoryEnabled

Methods inherited from interface org.cloudsimplus.core.Identifiable

getId

Methods inherited from interface org.cloudsimplus.core.Machine

getIdleInterval, getLastBusyTime, getSimulation, isIdle, isIdleEnough

Methods inherited from interface org.cloudsimplus.core.PhysicalMachine

getExpectedRelativeCpuUtilization, getRelativeBwUtilization, getRelativeCpuUtilization, getRelativeMipsCapacityPercent, getRelativeRamUtilization

Methods inherited from interface org.cloudsimplus.resources.Resourceful

getResource

Methods inherited from interface org.cloudsimplus.core.Startable

getStartTime, getTotalExecutionTime, hasStarted, setLastBusyTime, setStartTime

Field Details

NULL

public static final NetworkHost NULL

Constructor Details

NetworkHost

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

Creates and starts up 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 HostAbstract

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 HostSuitability 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 HostAbstract

Parameters:

vm - Vm being started

Returns:

a HostSuitability to indicate if the Vm was placed into the host or not (if the Host doesn't have enough resources to allocate the Vm)

See Also:

• Host.isLazySuitabilityEvaluation()

addReceivedNetworkPacket

public void addReceivedNetworkPacket(HostPacket hostPacket)

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

Parameters:

hostPacket - received network packet