1 package at.ac.tuwien.lsdc.types;
3 import java.util.HashMap;
5 import at.ac.tuwien.lsdc.exception.ActiveApplicationsException;
6 import at.ac.tuwien.lsdc.exception.VMsRunningException;
7 import at.ac.tuwien.lsdc.types.VirtualMachine.VMType;
9 public class PhysicalMachine {
11 private static int count = 0;
13 private HashMap<Integer, VirtualMachine> VMs = new HashMap<Integer, VirtualMachine>();
17 private final int maxSize = 50000;
18 private final int maxRAM = 4700;
19 private final int maxCPU = 2400;
25 private final int initialSize = 850;
26 private final int initialRAM = 300;
27 private final int initialCPU = 500;
29 private boolean running = false;
31 public PhysicalMachine() {
43 public void stop() throws VMsRunningException {
45 throw new VMsRunningException("PM cannot be stopped. Some VMs still running");
47 VMs = new HashMap<Integer, VirtualMachine>();
54 public double getConsumption() {
55 return 200 + 0.3 * (CPU - initialCPU);
58 public VirtualMachine startVirtualMachine(int sz, int ram, int cpu, VMType type) {
59 if (checkVM(sz, ram, cpu)) {
60 VirtualMachine vm = new VirtualMachine(sz, ram, cpu, this, type);
61 VMs.put(vm.getId(), vm);
62 size = size + vm.getSize();
63 RAM = RAM + vm.getRAM();
64 CPU = CPU + vm.getCPU();
70 public void stopVirtualMachine(VirtualMachine vm) throws ActiveApplicationsException {
71 if (VMs.containsKey(vm.getId())) {
72 if (vm.getApplications().size() != 0) {
73 throw new ActiveApplicationsException("Applications must be migrated before stopping a VM, VM id "+vm.getId());
75 VMs.remove(vm.getId());
76 size = size - vm.getSize();
77 RAM = RAM - vm.getRAM();
78 CPU = CPU - vm.getCPU();
83 public boolean checkVM(int size, int RAM, int CPU) {
84 return (size <= availableSize()) && (RAM <= availableRAM())
85 && (CPU <= availableCPU());
88 private int availableSize() {
89 return maxSize - size;
92 private int availableRAM() {
96 private int availableCPU() {
100 public int getCurrentSize() {
104 public int getCurrentRam() {
108 public int getCurrentCpu() {
112 public double getSizeUtilization() {
113 return ((double)(size - initialSize) / (maxSize - initialSize)) * 100;
116 public double getRamUtilization() {
117 return ((double)(RAM - initialRAM) / (maxRAM - initialRAM)) * 100;
120 public double getCpuUtilization() {
121 return ((double)(CPU - initialCPU) / (maxCPU - initialCPU)) * 100;
124 public double getAverageUtilization() {
125 return (getSizeUtilization() + getRamUtilization() + getCpuUtilization()) / 3.0;
132 public boolean isRunning() {
136 public VirtualMachine getVirtualMachine(int id) {
140 public int countCurrentlyRunningVMs() {
141 return VMs.values().size();