cloudsim基於例子自己建立自己雲計算仿真平臺（仿CloudSimExample1.java）

package clousimtest;

import java.text.DecimalFormat;
import java.util.ArrayList;
import java.util.Calendar;
import java.util.LinkedList;
import java.util.List;

import org.cloudbus.cloudsim.Cloudlet;
import org.cloudbus.cloudsim.CloudletSchedulerTimeShared;
import org.cloudbus.cloudsim.Datacenter;
import org.cloudbus.cloudsim.DatacenterBroker;
import org.cloudbus.cloudsim.DatacenterCharacteristics;
import org.cloudbus.cloudsim.Host;
import org.cloudbus.cloudsim.Log;
import org.cloudbus.cloudsim.Pe;
import org.cloudbus.cloudsim.Storage;
import org.cloudbus.cloudsim.UtilizationModel;
import org.cloudbus.cloudsim.UtilizationModelFull;
import org.cloudbus.cloudsim.Vm;
import org.cloudbus.cloudsim.VmAllocationPolicySimple;
import org.cloudbus.cloudsim.VmSchedulerTimeShared;
import org.cloudbus.cloudsim.core.CloudSim;
import org.cloudbus.cloudsim.provisioners.BwProvisionerSimple;
import org.cloudbus.cloudsim.provisioners.PeProvisionerSimple;
import org.cloudbus.cloudsim.provisioners.RamProvisionerSimple;
/**
 * 單主機，單虛擬機，單任務仿真模擬
 * @author ytw
 *
 */
public class myclousim {
	 	//虛擬機列表
		private static List<Vm> vmlist;
		//雲任務列表
		private static List<Cloudlet> cloudletList;  
		public static void main(String[] args) {
			Log.printLine("Starting MyCloudSim...");
			try{
				//雲用戶數量
				int num_user = 1;
				//日曆的字段已使用當前日期和時間初始化。
				Calendar calendar = Calendar.getInstance();
				//跟蹤事件
				boolean trace_flag = false;
				//初始化CloudSim庫。
				CloudSim.init(num_user, calendar, trace_flag);
				//第二步：創建數據中心
				Datacenter datacenter0 = createDatacenter("Datacenter_0");
				//第三步：創建代理
				DatacenterBroker broker = createBroker();
				int brokerId = broker.getId();
				//第四步：創建一個虛擬機
				Vm vm = createVm(brokerId);
				int vmid=vm.getId();
				//添加到虛擬機列表
				vmlist = new ArrayList<Vm>();
				vmlist.add(vm);
				//提交虛擬機列表到代理
				broker.submitVmList(vmlist);
				//第五步：創建雲任務，將雲任務添加到列表中，將雲任務列表提交給數據中心代理
				Cloudlet cloudlet = createCloudlet(brokerId,vmid);
				//將雲任務添加到列表中
				cloudletList = new ArrayList<Cloudlet>();
				cloudletList.add(cloudlet);
				//將雲任務列表提交給代理
				broker.submitCloudletList(cloudletList);
				//第六步：開始模擬
				CloudSim.startSimulation();
				//CloudSim.stopSimulation();
				//最後一步：模擬結束時打印結果
				List<Cloudlet> newList = broker.getCloudletReceivedList();
				printCloudletList(newList);
				Log.printLine("MyCloudSim finished!");
			}catch (Exception e) {
				e.printStackTrace();
				Log.printLine("Unwanted errors happen");
				
			}
			
	}
	//創建雲任務
	private static Cloudlet createCloudlet(int brokerId,int vmid){
		//雲任務屬性
		int id = 0;
		long length = 400000;
		long fileSize = 300;
		long outputSize = 300;
		int pesNumber = 1;
		UtilizationModel utilizationModel = new UtilizationModelFull();//資源利用模式
		Cloudlet cloudlet =new Cloudlet(id, length, pesNumber, fileSize, 
                                outputSize, utilizationModel, utilizationModel, 
                                utilizationModel);
		cloudlet.setUserId(brokerId);
		cloudlet.setVmId(vmid);
		return cloudlet;
	}
	//創建虛擬機
	private static Vm createVm(int brokerId){
		//Vm 描述
		int vmid = 1; //VMID
		int mips = 1000;//速率
		long size = 10000; //  虛擬機的存儲大小 (MB)
		int ram = 512; //  虛擬機內存 (MB)
		long bw = 1000;//虛擬機帶寬
		int pesNumber = 1; // cpu核數
		String vmm = "Xen"; // //虛擬機監視器
		
		Vm vm = new Vm(vmid, brokerId, mips, pesNumber, ram, bw, size, vmm, new CloudletSchedulerTimeShared());//虛擬機內對任務的調度//虛擬機對收到的多個cloudlet共享處理器資源的策略
		
		return vm;
	}
	//創建代理
	private static DatacenterBroker createBroker() {
		DatacenterBroker broker = null;
		try {
			broker = new DatacenterBroker("Broker");
		} catch (Exception e) {
			e.printStackTrace();
			return null;
		}
		return broker;
	}

	//創建數據中心
	private static Datacenter createDatacenter(String name) {

		//1.定義主機列表
		List<Host> hostList = new ArrayList<Host>();
		//2.創建主機包含的PE或者CPU處理器列表，定義爲MIPS速率
		List<Pe> peList = new ArrayList<Pe>();
		int mips = 1000;
		//3. 創建處理器，並添加到Pe列表中
		peList.add(new Pe(0, new PeProvisionerSimple(mips))); // 需要Pe id 和 MIPS 速率
		// 4. 創建主機，並將其添加至主機列表
		int hostId = 0;
		int ram = 2048; // 主機內存 (MB)
		long storage = 1000000; // 主機的存儲空間
		int bw = 10000;//主機帶寬

		hostList.add(
			new Host(
				hostId,
				new RamProvisionerSimple(ram),//內存提供者，爲虛擬機提供內存//內存分配策略
				new BwProvisionerSimple(bw),//帶寬提供者//帶寬分配策略
				storage,
				peList,
				new VmSchedulerTimeShared(peList)//時間共享的VM調度//虛擬機間共享資源的實時調度策略//VMM對虛擬機間共享處理器資源的策略
			)
		); 

		// 5. 創建存儲數據中心屬性的DatacenterCharacteristics對象：架構，操作系統，機器列表，
		//    分配策略：時間或空間共享，時區及其價格（G $ / Pe時間單位）。
		String arch = "x86"; // 架構
		String os = "Linux"; // 操作系統
		String vmm = "Xen"; //虛擬機監視器
		double time_zone = 10.0; // 此資源所在的時區
		double cost = 3.0; // 處理器花費
		double costPerMem = 0.05; // 內存花費
		double costPerStorage = 0.001; // 存儲花費
		double costPerBw = 0.0; //帶寬花費
		LinkedList<Storage> storageList = new LinkedList<Storage>(); // 我們現在不添加SAN設備
		DatacenterCharacteristics characteristics = new DatacenterCharacteristics(
				arch, os, vmm, hostList, time_zone, cost, costPerMem,
				costPerStorage, costPerBw);

		// 6. 最後，我們需要創建一個PowerDatacenter對象。
		Datacenter datacenter = null;
		try {
			datacenter = new Datacenter(name, characteristics, new VmAllocationPolicySimple(hostList), //虛擬機到主機的分配資源分配、任務調度策略
					storageList, 0);
		} catch (Exception e) {
			e.printStackTrace();
		}

		return datacenter;
	}
	private static void printCloudletList(List<Cloudlet> list) {
		int size = list.size();
		Cloudlet cloudlet;

		String indent = "    ";
		Log.printLine();
		Log.printLine("========== OUTPUT ==========");
		Log.printLine("Cloudlet ID" + indent + "STATUS" + indent
				+ "Data center ID" + indent + "VM ID" + indent + "Time" + indent
				+ "Start Time" + indent + "Finish Time");

		DecimalFormat dft = new DecimalFormat("###.##");
		for (int i = 0; i < size; i++) {
			cloudlet = list.get(i);
			Log.print(indent + cloudlet.getCloudletId() + indent + indent);

			if (cloudlet.getCloudletStatus() == Cloudlet.SUCCESS) {
				Log.print("SUCCESS");

				Log.printLine(indent + indent + cloudlet.getResourceId()
						+ indent + indent + indent + cloudlet.getVmId()
						+ indent + indent
						+ dft.format(cloudlet.getActualCPUTime()) + indent
						+ indent + dft.format(cloudlet.getExecStartTime())
						+ indent + indent
						+ dft.format(cloudlet.getFinishTime()));
			}
		}
	}
}