137 lines
3.6 KiB
Java
137 lines
3.6 KiB
Java
/*
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* Title: CloudSim Toolkit
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* Description: CloudSim (Cloud Simulation) Toolkit for Modeling and Simulation of Clouds
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* Licence: GPL - http://www.gnu.org/copyleft/gpl.html
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*
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* Copyright (c) 2009-2012, The University of Melbourne, Australia
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*/
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package org.cloudbus.cloudsim.power;
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import java.util.HashMap;
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import java.util.List;
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import java.util.Map;
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import org.cloudbus.cloudsim.Host;
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import org.cloudbus.cloudsim.Log;
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import org.cloudbus.cloudsim.Vm;
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import org.cloudbus.cloudsim.VmAllocationPolicy;
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import org.cloudbus.cloudsim.core.CloudSim;
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/**
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* The class of an abstract power-aware VM allocation policy.
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*
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* If you are using any algorithms, policies or workload included in the power package, please cite
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* the following paper:
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*
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* Anton Beloglazov, and Rajkumar Buyya, "Optimal Online Deterministic Algorithms and Adaptive
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* Heuristics for Energy and Performance Efficient Dynamic Consolidation of Virtual Machines in
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* Cloud Data Centers", Concurrency and Computation: Practice and Experience (CCPE), Volume 24,
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* Issue 13, Pages: 1397-1420, John Wiley & Sons, Ltd, New York, USA, 2012
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*
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* @author Anton Beloglazov
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* @since CloudSim Toolkit 3.0
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*/
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public abstract class PowerVmAllocationPolicyAbstract extends VmAllocationPolicy {
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/** The vm table. */
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private final Map<String, Host> vmTable = new HashMap<String, Host>();
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/**
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* Instantiates a new power vm allocation policy abstract.
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*
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* @param list the list
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*/
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public PowerVmAllocationPolicyAbstract(List<? extends Host> list) {
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super(list);
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}
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/*
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* (non-Javadoc)
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* @see org.cloudbus.cloudsim.VmAllocationPolicy#allocateHostForVm(org.cloudbus.cloudsim.Vm)
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*/
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@Override
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public boolean allocateHostForVm(Vm vm) {
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return allocateHostForVm(vm, findHostForVm(vm));
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}
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/*
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* (non-Javadoc)
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* @see org.cloudbus.cloudsim.VmAllocationPolicy#allocateHostForVm(org.cloudbus.cloudsim.Vm,
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* org.cloudbus.cloudsim.Host)
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*/
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@Override
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public boolean allocateHostForVm(Vm vm, Host host) {
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if (host == null) {
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Log.formatLine("%.2f: No suitable host found for VM #" + vm.getId() + "\n", CloudSim.clock());
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return false;
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}
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if (host.vmCreate(vm)) { // if vm has been succesfully created in the host
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getVmTable().put(vm.getUid(), host);
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Log.formatLine(
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"%.2f: VM #" + vm.getId() + " has been allocated to the host #" + host.getId(),
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CloudSim.clock());
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return true;
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}
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Log.formatLine(
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"%.2f: Creation of VM #" + vm.getId() + " on the host #" + host.getId() + " failed\n",
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CloudSim.clock());
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return false;
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}
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/**
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* Find host for vm.
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*
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* @param vm the vm
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* @return the power host
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*/
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public PowerHost findHostForVm(Vm vm) {
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for (PowerHost host : this.<PowerHost> getHostList()) {
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if (host.isSuitableForVm(vm)) {
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return host;
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}
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}
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return null;
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}
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/*
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* (non-Javadoc)
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* @see org.cloudbus.cloudsim.VmAllocationPolicy#deallocateHostForVm(org.cloudbus.cloudsim.Vm)
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*/
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@Override
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public void deallocateHostForVm(Vm vm) {
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Host host = getVmTable().remove(vm.getUid());
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if (host != null) {
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host.vmDestroy(vm);
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}
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}
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/*
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* (non-Javadoc)
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* @see org.cloudbus.cloudsim.VmAllocationPolicy#getHost(org.cloudbus.cloudsim.Vm)
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*/
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@Override
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public Host getHost(Vm vm) {
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return getVmTable().get(vm.getUid());
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}
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/*
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* (non-Javadoc)
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* @see org.cloudbus.cloudsim.VmAllocationPolicy#getHost(int, int)
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*/
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@Override
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public Host getHost(int vmId, int userId) {
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return getVmTable().get(Vm.getUid(userId, vmId));
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}
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/**
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* Gets the vm table.
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*
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* @return the vm table
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*/
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public Map<String, Host> getVmTable() {
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return vmTable;
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}
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}
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