hu.mta.sztaki.lpds.cloud.simulator.io
Class VirtualAppliance

java.lang.Object
  hu.mta.sztaki.lpds.cloud.simulator.io.StorageObject
      hu.mta.sztaki.lpds.cloud.simulator.io.VirtualAppliance

public class VirtualAppliance
extends StorageObject

Virtual appliances represent functional virtual machine images in the system.

Author:

"Gabor Kecskemeti, Distributed and Parallel Systems Group, University of Innsbruck (c) 2013" "Gabor Kecskemeti, Laboratory of Parallel and Distributed Systems, MTA SZTAKI (c) 2012"

Field Summary

private long	bgNetworkLoad The background network load expected to be simulated between the appliance's hosting repository and the PM that hosts the VM while the VM runs its tasks.
private double	startupProcessing The number of processing instructions to be done during the startup of the VM that utilizes this VA.

Fields inherited from class hu.mta.sztaki.lpds.cloud.simulator.io.StorageObject

id, size

Constructor Summary

VirtualAppliance(String id, double startupProcess, long nl)
Creates a virtual appliance with default size and variance (for details, see StorageObject)

VirtualAppliance(String id, double startupProcess, long nl, boolean vary, long reqDisk)
Creates a virtual appliance with custom size and size variance.

Method Summary

long	getBgNetworkLoad() Allows to determine the background network load expected to be simulated between the appliance's hosting repository and the PM that hosts the VM while the VM runs its tasks.
double	getStartupProcessing() Allows to determine the number of processing instructions to be done during the startup of the VM that utilizes this VA.
VirtualAppliance	newCopy(String myid) creates an object that holds the exact copy of the current virtual appliance with a different id Please note this copy is not going to be registered in any repositories (unlike the other VA), nor will it be used by any virtual machines.
void	setBgNetworkLoad(long bgNetworkLoad) Allows to set the background network load expected to be simulated between the appliance's hosting repository and the PM that hosts the VM while the VM runs its tasks.
private void	setDetails(double startupProcess, long nl) Allows updating the appliance's properties in a single step.
void	setStartupProcessing(double startupProcessing) Allows to set the number of processing instructions to be done during the startup of the VM that utilizes this VA.
String	toString() Provides a compact output of all data represented in this VA.

Methods inherited from class java.lang.Object

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

Field Detail

bgNetworkLoad

private long bgNetworkLoad

The background network load expected to be simulated between the appliance's hosting repository and the PM that hosts the VM while the VM runs its tasks. Unit: bytes/tick Ratinale: if the VM is backed by a shared storage, then all its disk operations (while doing compute intensive tasks) are expected to generate network activities as well.

startupProcessing

private double startupProcessing

The number of processing instructions to be done during the startup of the VM that utilizes this VA. unit: instructions

Constructor Detail

VirtualAppliance

public VirtualAppliance(String id,
                        double startupProcess,
                        long nl)

Creates a virtual appliance with default size and variance (for details, see StorageObject)

Parameters:

id - the id of the appliance

startupProcess - number of processing instructions on startup

nl - background network load while running tasks on a VM that has storage backed by a remote repository

VirtualAppliance

public VirtualAppliance(String id,
                        double startupProcess,
                        long nl,
                        boolean vary,
                        long reqDisk)

Creates a virtual appliance with custom size and size variance.

Parameters:

id - the id of the appliance

startupProcess - number of processing instructions on startup

nl - background network load while running tasks on a VM that has storage backed by a remote repository

vary - true if the requested appliance size is not fixed, false otherwise

reqDisk - the size of the disk image to host the virtual appliance (this might not be the actual size, but could be used for generating varying sizes according to the param vary. Unit: bytes.

Method Detail

setDetails

private void setDetails(double startupProcess,
                        long nl)

Allows updating the appliance's properties in a single step.

Parameters:

startupProcess - number of processing instructions on startup

nl - background network load while running tasks on a VM that has storage backed by a remote repository

newCopy

public VirtualAppliance newCopy(String myid)

creates an object that holds the exact copy of the current virtual appliance with a different id Please note this copy is not going to be registered in any repositories (unlike the other VA), nor will it be used by any virtual machines.

Overrides:

newCopy in class StorageObject

Parameters:

myid - the id of the new storage object

Returns:

the storage object that has the same size as this one but that has the new id given in myid

getBgNetworkLoad

public long getBgNetworkLoad()

Allows to determine the background network load expected to be simulated between the appliance's hosting repository and the PM that hosts the VM while the VM runs its tasks. Unit: bytes/tick

getStartupProcessing

public double getStartupProcessing()

Allows to determine the number of processing instructions to be done during the startup of the VM that utilizes this VA. unit: number of instructions

setBgNetworkLoad

public void setBgNetworkLoad(long bgNetworkLoad)

Allows to set the background network load expected to be simulated between the appliance's hosting repository and the PM that hosts the VM while the VM runs its tasks. Unit: bytes/tick Warning: handle with care, this has no effect on already running virtual machines

setStartupProcessing

public void setStartupProcessing(double startupProcessing)

Allows to set the number of processing instructions to be done during the startup of the VM that utilizes this VA. unit: number of instructions Warning: handle with care, this has no effect on already running virtual machines

toString

public String toString()

Provides a compact output of all data represented in this VA. Useful for debugging.

Overrides:

toString in class StorageObject