hu.mta.sztaki.lpds.cloud.simulator.iaas.pmscheduling
Class SchedulingDependentMachines

java.lang.Object
  hu.mta.sztaki.lpds.cloud.simulator.iaas.pmscheduling.PhysicalMachineController
      hu.mta.sztaki.lpds.cloud.simulator.iaas.pmscheduling.SchedulingDependentMachines

Direct Known Subclasses:

MultiPMController

public class SchedulingDependentMachines
extends PhysicalMachineController

A reactive PM controller that increases/decreases the powered on pm set on demands of the vm scheduler. This controller implementation is always changing the machine set size by one, thus it is not applicable in cases when there are rapid demand changes on the infrastructure.

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"

Nested Class Summary

private class

SchedulingDependentMachines.CapacityChangeManager The main PM control mechanisms are implemented in this class The class basically controls a single PM.

Field Summary

private HashMap<PhysicalMachine,SchedulingDependentMachines.CapacityChangeManager>	capacityManagers this map lists all the currently controlled PMs and their controllers.
private PhysicalMachine	currentlyStartingPM ensures that we only have a single machine switching on at a time and shows what is the actual machine that is switching on.

Fields inherited from class hu.mta.sztaki.lpds.cloud.simulator.iaas.pmscheduling.PhysicalMachineController

parent, queueingEvent

Constructor Summary

SchedulingDependentMachines(IaaSService parent)
Constructs the scheduler and passes the parent IaaSService to the superclass.

Method Summary

protected VMManager.CapacityChangeEvent<PhysicalMachine>	getHostRegEvent() Defines to do the following when a new host is (de)registered to the parent IaaSService: if the current event is a registration event then the function creates and locally registers a new capacity change manager for the newly registered pms if the current event is a deregistration event then the function cancels the capacity management for all deregistered pms
protected Scheduler.QueueingEvent	getQueueingEvent() Defines to do the following when VM requests arrive: check if there is already a PM under preparation (if there is one then does nothing) if there are no PM that is currently prepared then starts to prepare one for accepting VM requests.
protected void	turnOnAMachine() switches on a not yet switched on machine from the parent IaaS's PM set.

Methods inherited from class java.lang.Object

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

Field Detail

capacityManagers

private HashMap<PhysicalMachine,SchedulingDependentMachines.CapacityChangeManager> capacityManagers

this map lists all the currently controlled PMs and their controllers.

currentlyStartingPM

private PhysicalMachine currentlyStartingPM

ensures that we only have a single machine switching on at a time and shows what is the actual machine that is switching on.

Constructor Detail

SchedulingDependentMachines

public SchedulingDependentMachines(IaaSService parent)

Constructs the scheduler and passes the parent IaaSService to the superclass.

Parameters:

parent - the IaaSService to serve

Method Detail

getHostRegEvent

protected VMManager.CapacityChangeEvent<PhysicalMachine> getHostRegEvent()

Defines to do the following when a new host is (de)registered to the parent IaaSService:

• if the current event is a registration event then the function creates and locally registers a new capacity change manager for the newly registered pms
• if the current event is a deregistration event then the function cancels the capacity management for all deregistered pms

Specified by:

getHostRegEvent in class PhysicalMachineController

Returns:

the object to handle the registration events

getQueueingEvent

protected Scheduler.QueueingEvent getQueueingEvent()

Defines to do the following when VM requests arrive:

1. check if there is already a PM under preparation (if there is one then does nothing)
2. if there are no PM that is currently prepared then starts to prepare one for accepting VM requests.

Specified by:

getQueueingEvent in class PhysicalMachineController

Returns:

the object to handle the VM scheduling related events

turnOnAMachine

protected void turnOnAMachine()

switches on a not yet switched on machine from the parent IaaS's PM set. if there are no more machines in the IaaS that can be turned on then the calling of this function is ignored.