@Override
public void init(Resource problemApp) {
this.setProblemResource(problemApp);
this.setProblemType(problemApp.getProblemType());
this.preconditionsOk = false;
this.curInstance = null;
this.selectedVm = null;
this.costs = 0;
this.app = null;
this.costs = Configuration.getInstance().getAppInsertIntoVmCosts();
if (problemApp instanceof App) { // only apps can be inserted
app = (App) problemApp;
if (app.getVm() == null) { // only new apps can be inserted
prediction = 0;
int curFitFactor = 0;
for (PhysicalMachine pm : Monitor.getInstance().getPms()) {
if (pm.isRunning()) {
for (VirtualMachine vm : pm.getVms()) {
curFitFactor = calculateFit(app, vm);
if (curFitFactor > prediction) {
preconditionsOk = true;
prediction = curFitFactor;
this.selectedVm = vm;
}
}
}
}
}
}
}
@Override
public void execute() {
globalTickExecution = Monitor.getInstance().getGlobalTicks();
// remove the app from the request- queue???
if (app.getOriginalRequest() != null) {
RequestGenerator.getInstance().removeRequestFromQueue(app.getOriginalRequest());
}
selectedVm.createApp(this.app);
}
@Override
public boolean evaluate() {
if (curInstance == null) {
curInstance = createInstance(0, selectedVm); // create a Instance with the past values
}
if (app.getSuspendedTicks() > 0
|| app.getVm().getSuspendedTicks() > 0
|| app.getVm().getPm().getSuspendedTicks() > 0) {
return false;
} else if (waitForEvaluation > 0) {
waitForEvaluation--;
return false;
} else {
// System.out.println("APP - Running Ticks: " + app.getRunningTicks());
LinkedList<Integer> cpuusagehist = selectedVm.getPm().getCpuUsageHistory(10);
LinkedList<Integer> memusagehist = selectedVm.getPm().getMemoryUsageHistory(10);
LinkedList<Integer> storageusagehist = selectedVm.getPm().getStorageUsageHistory(10);
double evaluation =
(255
- calculateUsageRatio(cpuusagehist, 85)
- calculateUsageRatio(memusagehist, 85)
- calculateUsageRatio(storageusagehist, 85))
/ 255;
// subtract SLA Violations
evaluation -=
(app.getCpuSlaErrorcount() + app.getMemorySlaErrorcount() + app.getStorageSlaErrorcount())
/ 10;
// minimum of 0
// evaluation = Math.max(0, evaluation);
Monitor.getInstance().logExecution(app, this, evaluation, this.globalTickExecution);
curInstance.setValue(getKnowledgeBase().attribute(63), evaluation);
this.setLocalEvaluation(evaluation);
getKnowledgeBase().add(curInstance);
}
return true;
}
