source: DCWoRMS/branches/coolemall/src/experiments/e2dc2013/recs/plugins/scheduling/exp2/RecsRandomSP.java @ 1499

package experiments.e2dc2013.recs.plugins.scheduling.exp2;

import experiments.e2dc2013.recs.plugins.scheduling.RecsSP;
import gridsim.dcworms.DCWormsTags;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Random;

import schedframe.events.scheduling.SchedulingEvent;
import schedframe.resources.ResourceStatus;
import schedframe.resources.computing.Node;
import schedframe.resources.computing.ComputingResource;
import schedframe.resources.computing.Core;
import schedframe.resources.computing.profiles.energy.airthroughput.StandardAirflowStateName;
import schedframe.resources.computing.profiles.energy.airthroughput.CustomAirflowStateName;
import schedframe.resources.units.ProcessingElements;
import schedframe.resources.units.ResourceUnit;
import schedframe.resources.units.ResourceUnitName;
import schedframe.resources.units.StandardResourceUnitName;
import schedframe.scheduling.manager.resources.ClusterResourceManager;
import schedframe.scheduling.manager.resources.ResourceManager;
import schedframe.scheduling.manager.tasks.JobRegistry;
import schedframe.scheduling.manager.tasks.JobRegistryImpl;
import schedframe.scheduling.plan.SchedulingPlanInterface;
import schedframe.scheduling.plan.impl.SchedulingPlan;
import schedframe.scheduling.plugin.ModuleList;
import schedframe.scheduling.queue.TaskQueue;
import schedframe.scheduling.queue.TaskQueueList;
import schedframe.scheduling.tasks.TaskInterface;

public class RecsRandomSP extends RecsSP {

        private Random rand = new Random(5);
        
        public SchedulingPlanInterface<?> schedule(SchedulingEvent event, TaskQueueList queues, JobRegistry jobRegistry,
                        ResourceManager resManager, ModuleList modules) {

                ClusterResourceManager resourceManager = (ClusterResourceManager) resManager;
                SchedulingPlan plan = new SchedulingPlan();
                // choose the events types to serve.
                // Different actions for different events are possible.
                switch (event.getType()) {
                case START_TASK_EXECUTION:
                case TASK_FINISHED:
                //case TIMER:
                        // our tasks are placed only in first queue (see BaseLocalSchedulingPlugin.placeJobsInQueues() method)
                        TaskQueue q = queues.get(0);

                        List<Node> notSelectedNodes = resourceManager.getNodes();
                        // check all tasks in queue
                        for (int i = 0; i < q.size(); i++) {
                                TaskInterface<?> task = q.get(i);
                                // if status of the tasks in READY
                                if (task.getStatus() == DCWormsTags.READY) {
                                        Node node = chooseRandomProvider(resourceManager, task);
                                        if (node != null) {
                                                node.getAirflowInterface().setAirflowState(StandardAirflowStateName.ON);
                                                notSelectedNodes.remove(node);
                                                addToSchedulingPlan(plan, task, chooseResourcesForExecution(node, task));
                                        }
                                }
                        }
                        adjustOtherFans(notSelectedNodes);
                        break;
                }
                return plan;
        }
        
        private Node chooseRandomProvider(ClusterResourceManager resourceManager, TaskInterface<?> task) {
                List<Node> nodes = filterNodes(resourceManager.getNodes(), task);
                if(nodes.size() > 0)
                        return randomNode(nodes);
                return null;
        }

        private Map<ResourceUnitName, ResourceUnit> chooseResourcesForExecution(
                        Node node, TaskInterface<?> task) {

                Map<ResourceUnitName, ResourceUnit> map = new HashMap<ResourceUnitName, ResourceUnit>();

                int cpuRequest;
                try {
                        cpuRequest = Double.valueOf(task.getCpuCntRequest()).intValue();
                } catch (NoSuchFieldException e) {
                        cpuRequest = 0;
                }

                if (cpuRequest != 0) {

                        List<Core> cores = node.getProcessors().get(0).getCores();

                        List<ComputingResource> choosenResources = new ArrayList<ComputingResource>();                          
                        for (int i = 0; i < cores.size(); i++) {
                                if (cores.get(i).getStatus() == ResourceStatus.FREE) {
                                        //choosenResources.add(cores.get(i));
                                        cpuRequest--;
                                }
                        }
                        if (cpuRequest > 0) {
                                //return null;
                        }
                        choosenResources.add(node.getProcessors().get(0));
                        ProcessingElements pe = new ProcessingElements();
                        pe.addAll(choosenResources);
                        map.put(StandardResourceUnitName.PE, pe);
                        return map;
                }
                return null;
        }
        
        private List<Node> filterNodes(List<Node> nodes, TaskInterface<?> task){
                List<Node> filteredNodes = new ArrayList<Node>();
                for (Node node : nodes) {
                        int cpuRequest;
                        try {
                                cpuRequest = Double.valueOf(task.getCpuCntRequest()).intValue();
                        } catch (NoSuchFieldException e) {
                                cpuRequest = 0;
                        }

                        if (cpuRequest != 0) {

                                List<Core> cores = node.getProcessors().get(0).getCores();
                                if (cores.size() < cpuRequest) {
                                        continue;
                                }

                                int freeCores = 0;
                                for(Core core: cores){
                                        if(core.getStatus() == ResourceStatus.FREE)
                                                freeCores++;
                                }
                                
                                if(freeCores != cores.size())
                                        continue;

                                filteredNodes.add(node);
                        }
                }
                
                return filteredNodes;
        }
        
        private Node randomNode(List<Node> nodes){
                return nodes.get(rand.nextInt(nodes.size()));
        }
        
        private void adjustOtherFans(List<Node> nodes){
                for(Node node : nodes){
                        if(node.getFreeProcessorsNumber() == node.getProcessorsNumber()){
                                node.getAirflowInterface().setAirflowState(StandardAirflowStateName.OFF);
                        } else if(new JobRegistryImpl(node.getFullName()).getRunningTasks().size() > 1)
                                node.getAirflowInterface().setAirflowState(new CustomAirflowStateName("FAN_ON_TURBO"));
                        else 
                                node.getAirflowInterface().setAirflowState(StandardAirflowStateName.ON);
                }
        }
}