219 lines
8.9 KiB
Java
219 lines
8.9 KiB
Java
/*
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* Title: EdgeCloudSim - Edge Server Manager
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*
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* Description:
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* DefaultEdgeServerManager is responsible for creating datacenters, hosts and VMs.
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* It also provides the list of VMs running on the hosts.
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* This information is critical for the edge orchestrator.
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*
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* Licence: GPL - http://www.gnu.org/copyleft/gpl.html
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* Copyright (c) 2017, Bogazici University, Istanbul, Turkey
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*/
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package edu.boun.edgecloudsim.edge_server;
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import java.util.ArrayList;
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import java.util.LinkedList;
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import java.util.List;
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import org.cloudbus.cloudsim.CloudletSchedulerTimeShared;
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import org.cloudbus.cloudsim.Datacenter;
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import org.cloudbus.cloudsim.DatacenterCharacteristics;
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import org.cloudbus.cloudsim.Host;
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import org.cloudbus.cloudsim.Pe;
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import org.cloudbus.cloudsim.Storage;
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import org.cloudbus.cloudsim.VmAllocationPolicy;
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import org.cloudbus.cloudsim.VmSchedulerSpaceShared;
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import org.cloudbus.cloudsim.core.CloudSim;
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import org.cloudbus.cloudsim.provisioners.BwProvisionerSimple;
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import org.cloudbus.cloudsim.provisioners.PeProvisionerSimple;
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import org.cloudbus.cloudsim.provisioners.RamProvisionerSimple;
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import org.w3c.dom.Document;
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import org.w3c.dom.Element;
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import org.w3c.dom.Node;
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import org.w3c.dom.NodeList;
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import edu.boun.edgecloudsim.core.SimManager;
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import edu.boun.edgecloudsim.core.SimSettings;
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import edu.boun.edgecloudsim.utils.Location;
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public class DefaultEdgeServerManager extends EdgeServerManager{
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private int hostIdCounter;
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public DefaultEdgeServerManager() {
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hostIdCounter = 0;
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}
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@Override
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public void initialize() {
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}
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@Override
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public VmAllocationPolicy getVmAllocationPolicy(List<? extends Host> hostList, int dataCenterIndex) {
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return new EdgeVmAllocationPolicy_Custom(hostList,dataCenterIndex);
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}
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public void startDatacenters() throws Exception{
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Document doc = SimSettings.getInstance().getEdgeDevicesDocument();
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NodeList datacenterList = doc.getElementsByTagName("datacenter");
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for (int i = 0; i < datacenterList.getLength(); i++) {
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Node datacenterNode = datacenterList.item(i);
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Element datacenterElement = (Element) datacenterNode;
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localDatacenters.add(createDatacenter(i, datacenterElement));
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}
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}
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public void createVmList(int brokerId){
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int hostCounter=0;
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int vmCounter=0;
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//Create VMs for each hosts
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Document doc = SimSettings.getInstance().getEdgeDevicesDocument();
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NodeList datacenterList = doc.getElementsByTagName("datacenter");
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for (int i = 0; i < datacenterList.getLength(); i++) {
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Node datacenterNode = datacenterList.item(i);
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Element datacenterElement = (Element) datacenterNode;
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NodeList hostNodeList = datacenterElement.getElementsByTagName("host");
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for (int j = 0; j < hostNodeList.getLength(); j++) {
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vmList.add(hostCounter, new ArrayList<EdgeVM>());
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Node hostNode = hostNodeList.item(j);
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Element hostElement = (Element) hostNode;
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NodeList vmNodeList = hostElement.getElementsByTagName("VM");
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for (int k = 0; k < vmNodeList.getLength(); k++) {
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Node vmNode = vmNodeList.item(k);
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Element vmElement = (Element) vmNode;
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String vmm = vmElement.getAttribute("vmm");
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int numOfCores = Integer.parseInt(vmElement.getElementsByTagName("core").item(0).getTextContent());
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double mips = Double.parseDouble(vmElement.getElementsByTagName("mips").item(0).getTextContent());
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int ram = Integer.parseInt(vmElement.getElementsByTagName("ram").item(0).getTextContent());
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long storage = Long.parseLong(vmElement.getElementsByTagName("storage").item(0).getTextContent());
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long bandwidth = SimSettings.getInstance().getWlanBandwidth() / (hostNodeList.getLength()+vmNodeList.getLength());
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//VM Parameters
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EdgeVM vm = new EdgeVM(vmCounter, brokerId, mips, numOfCores, ram, bandwidth, storage, vmm, new CloudletSchedulerTimeShared());
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vmList.get(hostCounter).add(vm);
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vmCounter++;
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}
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hostCounter++;
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}
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}
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}
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public void terminateDatacenters(){
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for (Datacenter datacenter : localDatacenters) {
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datacenter.shutdownEntity();
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}
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}
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//average utilization of all VMs
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public double getAvgUtilization(){
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double totalUtilization = 0;
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double vmCounter = 0;
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// for each datacenter...
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for(int i= 0; i<localDatacenters.size(); i++) {
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List<? extends Host> list = localDatacenters.get(i).getHostList();
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// for each host...
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for (int j=0; j < list.size(); j++) {
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Host host = list.get(j);
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List<EdgeVM> vmArray = SimManager.getInstance().getEdgeServerManager().getVmList(host.getId());
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//for each vm...
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for(int vmIndex=0; vmIndex<vmArray.size(); vmIndex++){
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totalUtilization += vmArray.get(vmIndex).getCloudletScheduler().getTotalUtilizationOfCpu(CloudSim.clock());
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vmCounter++;
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}
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}
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}
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return totalUtilization / vmCounter;
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}
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private Datacenter createDatacenter(int index, Element datacenterElement) throws Exception{
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String arch = datacenterElement.getAttribute("arch");
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String os = datacenterElement.getAttribute("os");
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String vmm = datacenterElement.getAttribute("vmm");
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double costPerBw = Double.parseDouble(datacenterElement.getElementsByTagName("costPerBw").item(0).getTextContent());
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double costPerSec = Double.parseDouble(datacenterElement.getElementsByTagName("costPerSec").item(0).getTextContent());
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double costPerMem = Double.parseDouble(datacenterElement.getElementsByTagName("costPerMem").item(0).getTextContent());
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double costPerStorage = Double.parseDouble(datacenterElement.getElementsByTagName("costPerStorage").item(0).getTextContent());
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List<EdgeHost> hostList=createHosts(datacenterElement);
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String name = "Datacenter_" + Integer.toString(index);
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double time_zone = 3.0; // time zone this resource located
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LinkedList<Storage> storageList = new LinkedList<Storage>(); //we are not adding SAN devices by now
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// 5. Create a DatacenterCharacteristics object that stores the
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// properties of a data center: architecture, OS, list of
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// Machines, allocation policy: time- or space-shared, time zone
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// and its price (G$/Pe time unit).
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DatacenterCharacteristics characteristics = new DatacenterCharacteristics(
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arch, os, vmm, hostList, time_zone, costPerSec, costPerMem, costPerStorage, costPerBw);
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// 6. Finally, we need to create a PowerDatacenter object.
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Datacenter datacenter = null;
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VmAllocationPolicy vm_policy = getVmAllocationPolicy(hostList,index);
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datacenter = new Datacenter(name, characteristics, vm_policy, storageList, 0);
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return datacenter;
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}
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private List<EdgeHost> createHosts(Element datacenterElement){
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// Here are the steps needed to create a PowerDatacenter:
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// 1. We need to create a list to store one or more Machines
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List<EdgeHost> hostList = new ArrayList<EdgeHost>();
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Element location = (Element)datacenterElement.getElementsByTagName("location").item(0);
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String attractiveness = location.getElementsByTagName("attractiveness").item(0).getTextContent();
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int wlan_id = Integer.parseInt(location.getElementsByTagName("wlan_id").item(0).getTextContent());
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int x_pos = Integer.parseInt(location.getElementsByTagName("x_pos").item(0).getTextContent());
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int y_pos = Integer.parseInt(location.getElementsByTagName("y_pos").item(0).getTextContent());
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int placeTypeIndex = Integer.parseInt(attractiveness);
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NodeList hostNodeList = datacenterElement.getElementsByTagName("host");
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for (int j = 0; j < hostNodeList.getLength(); j++) {
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Node hostNode = hostNodeList.item(j);
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Element hostElement = (Element) hostNode;
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int numOfCores = Integer.parseInt(hostElement.getElementsByTagName("core").item(0).getTextContent());
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double mips = Double.parseDouble(hostElement.getElementsByTagName("mips").item(0).getTextContent());
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int ram = Integer.parseInt(hostElement.getElementsByTagName("ram").item(0).getTextContent());
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long storage = Long.parseLong(hostElement.getElementsByTagName("storage").item(0).getTextContent());
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long bandwidth = SimSettings.getInstance().getWlanBandwidth() / hostNodeList.getLength();
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// 2. A Machine contains one or more PEs or CPUs/Cores. Therefore, should
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// create a list to store these PEs before creating
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// a Machine.
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List<Pe> peList = new ArrayList<Pe>();
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// 3. Create PEs and add these into the list.
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//for a quad-core machine, a list of 4 PEs is required:
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for(int i=0; i<numOfCores; i++){
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peList.add(new Pe(i, new PeProvisionerSimple(mips))); // need to store Pe id and MIPS Rating
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}
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//4. Create Hosts with its id and list of PEs and add them to the list of machines
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EdgeHost host = new EdgeHost(
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hostIdCounter,
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new RamProvisionerSimple(ram),
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new BwProvisionerSimple(bandwidth), //kbps
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storage,
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peList,
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new VmSchedulerSpaceShared(peList)
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);
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host.setPlace(new Location(placeTypeIndex, wlan_id, x_pos, y_pos));
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hostList.add(host);
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hostIdCounter++;
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}
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return hostList;
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}
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}
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