source: DCWoRMS/branches/coolemall/src/schedframe/SimulatedEnvironment.java @ 1207

package schedframe;

import gridsim.GridSim;

import java.util.ArrayList;
import java.util.HashSet;
import java.util.Iterator;
import java.util.LinkedList;
import java.util.List;
import java.util.Set;

import schedframe.exceptions.ResourceException;
import schedframe.resources.ResourceHistoryChanges;
import schedframe.resources.computing.ComputingResource;
import schedframe.scheduling.Scheduler;

public class SimulatedEnvironment {

        protected static Scheduler scheduler;
        protected static List<ComputingResource> computingResources;
        protected List<Initializable> toInit;
        protected Set<String> compResLayers;
        protected static List<ResourceHistoryChanges> compResHistory = new ArrayList<ResourceHistoryChanges>();
        
        public SimulatedEnvironment(Scheduler logicalStructure, List<ComputingResource> compResources){
                scheduler = logicalStructure;
                computingResources = compResources;
        }

        public Scheduler getScheduler() {
                return scheduler;
        }

        public List<ComputingResource> getComputingResources() {
                return computingResources;
        }

        public static ComputingResource getComputingResourceByName(String resourceName) throws ResourceException {
                ComputingResource resourceWithName = null;
                for (int i = 0; i < computingResources.size() && resourceWithName == null; i++) {
                        ComputingResource resource = computingResources.get(i);
                        if (resource.getFullName().equals(resourceName))
                                resourceWithName = resource;
                        else
                                resourceWithName = resource.getDescendantByName(resourceName);
                }
                return resourceWithName;
        }

        private static Scheduler getSchedulerByName(String schedulerName) {
                Scheduler schedulerWithName = null;

                if (scheduler.getName().compareTo(schedulerName) == 0)
                        schedulerWithName = scheduler;
                else if (scheduler.getChildren() != null) {
                        LinkedList<Scheduler> toExamine = new LinkedList<Scheduler>();
                        toExamine.push(scheduler);

                        while (!toExamine.isEmpty() && schedulerWithName != null) {
                                Scheduler scheduler = toExamine.pop();
                                List<Scheduler> schedulers = scheduler.getChildren();

                                int numberOfSched = schedulers.size();
                                for (int i = 0; i < numberOfSched; i++) {
                                        Scheduler schedulerChild = schedulers.get(i);
                                        if(scheduler.getName().equals(schedulerName)){
                                                schedulerWithName = schedulerChild;
                                                break;
                                        } else
                                                toExamine.addLast(schedulerChild);
                                }
                        }
                }
                return schedulerWithName;
        }
        
        public static Scheduler getScheduler(String resName){
                if(GridSim.getEntityId(resName) != -1){
                        return getSchedulerByName(resName);
                }
                ComputingResource resourceWithName = null;
                try {
                        resourceWithName = getComputingResourceByName(resName);
                } catch (ResourceException e) {
                }
                /*for(int i = 0 ; i < computingResources.size() && resourceWithName == null; i++){
                        ComputingResource resource = computingResources.get(i);
                        if(resource.getName().equals(resName))
                                resourceWithName = resource;
                        else
                                try {
                                        resourceWithName = resource.getDescendantByName(resName);
                                } catch (ResourceException e) {
                                        return null;
                                }
                }*/
                if(resourceWithName == null)
                        return null;
                List<ComputingResource> children = resourceWithName.getChildren();
                Set<Scheduler> childrenSchedulers = new HashSet<Scheduler>();
                if(children.isEmpty())
                        return null;
                for(ComputingResource child: children) {
                        childrenSchedulers.add(child.getScheduler());
                }       

                Set<Scheduler> tempChildrenSchedulers = new HashSet<Scheduler>(childrenSchedulers);
                while(childrenSchedulers.size() > 1){
                        childrenSchedulers = new HashSet<Scheduler>();
                        for(Scheduler s: tempChildrenSchedulers){
                                childrenSchedulers.add(s.getParent());
                        }
                        tempChildrenSchedulers = new HashSet<Scheduler>(childrenSchedulers);
                }
                Iterator<Scheduler> it = childrenSchedulers.iterator();
                Scheduler potentialScheduler = it.next();
                if(potentialScheduler.getCompResources().containsAll(children))
                        return potentialScheduler;
                return null;
        }
        
        public static ComputingResource getCommonComputingResourceParent(List<ComputingResource> compResources){
                if(compResources.size() == 0)
                        return null;
                Set<ComputingResource> candidates = new HashSet<ComputingResource>(compResources);
                while(candidates.size() > 1){
                        Set<ComputingResource> parents = new HashSet<ComputingResource>();
                        Iterator<ComputingResource> it = candidates.iterator();
                        while(it.hasNext()){
                                ComputingResource compRes = it.next();
                                if(compRes.getParent() != null){
                                        parents.add(compRes.getParent());
                                }
                                it.remove();
                        }
                        candidates.addAll(parents);
                }
                return candidates.toArray(new ComputingResource[0])[0];
        }

        public void setInitList(List<Initializable> toI) {
                toInit = toI;
        }

        public List<Initializable> getToInit() {
                return toInit;
        }

        public Set<String> getComputingResourceLayers() {
                return compResLayers;
        }

        public void setCompResLayers(Set<String> compResLayers) {
                this.compResLayers = compResLayers;
        }

        public static void traceResource(long timestamp, String resourceName, String operation, String paramter){
                ResourceHistoryChanges rhc = new ResourceHistoryChanges(timestamp, resourceName, operation, paramter);
                compResHistory.add(rhc);
        }

        public static List<ResourceHistoryChanges> getCompResHistory() {
                return compResHistory;
        }
}