source: DCWoRMS/branches/coolemall/src/example/localplugin/FCFSBF_FanManagementClusterPlugin.java @ 778

package example.localplugin;

import gridsim.dcworms.DCWormsTags;

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

import schedframe.events.scheduling.SchedulingEvent;
import schedframe.resources.computing.ComputingNode;
import schedframe.resources.computing.profiles.energy.airthroughput.StandardAirThroughputStateName;
import schedframe.resources.computing.profiles.energy.airthroughput.UserAirThroughputStateName;
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.grid.ModuleList;
import schedframe.scheduling.queue.TaskQueue;
import schedframe.scheduling.queue.TaskQueueList;
import schedframe.scheduling.tasks.TaskInterface;

public class FCFSBF_FanManagementClusterPlugin extends BaseLocalSchedulingPlugin {

        private Random rand;
        
        public FCFSBF_FanManagementClusterPlugin () {
                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<ComputingNode> notSelectedNodes = resourceManager.getComputingNodes();
                        // 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) {

                                        ComputingNode node = chooseRandomProvider(resourceManager, task);
                                        if (node != null) {
                                                //if there are two or more tasks ( running on the given node then
                                                if(new JobRegistryImpl(node.getName()).getRunningTasks().size() > 0)
                                                        node.getAirThroughputInterface().setAirThroughputState(new UserAirThroughputStateName("FAN_ON_TURBO"));
                                                else 
                                                        node.getAirThroughputInterface().setAirThroughputState(StandardAirThroughputStateName.FAN_ON);
                                                notSelectedNodes.remove(node);
                                                addToSchedulingPlan(plan, task, node.getName());
                                        }
                                }
                        }
                        adjustOtherFans(notSelectedNodes);
                        break;
                }
                return plan;
        }

        private ComputingNode chooseRandomProvider(ClusterResourceManager resourceManager, TaskInterface<?> task) {
                List<ComputingNode> nodes = filterNodes(resourceManager.getComputingNodes(), task);
                return randomNode(nodes);
        }
        
        private List<ComputingNode> filterNodes(List<ComputingNode> nodes, TaskInterface<?> task){
                List<ComputingNode> filteredNodes = new ArrayList<ComputingNode>();
                for (ComputingNode node : nodes) {
                        int cpuRequest;
                        try {
                                cpuRequest = Double.valueOf(task.getCpuCntRequest()).intValue();
                        } catch (NoSuchFieldException e) {
                                cpuRequest = 0;
                        }
                        if (cpuRequest != 0) {
                                if(node.getFreeProcessorsNumber() > cpuRequest)
                                        filteredNodes.add(node);
                        }
                }
                
                return filteredNodes;
        }
        
        private ComputingNode randomNode(List<ComputingNode> nodes){
                return nodes.get(rand.nextInt(nodes.size()));
        }
        
        private void adjustOtherFans(List<ComputingNode> nodes){
                for(ComputingNode node : nodes){
                        if(node.getFreeProcessorsNumber() == node.getProcessorsNumber()){
                                node.getAirThroughputInterface().setAirThroughputState(StandardAirThroughputStateName.FAN_OFF);
                        } else if(new JobRegistryImpl(node.getName()).getRunningTasks().size() > 1)
                                node.getAirThroughputInterface().setAirThroughputState(new UserAirThroughputStateName("FAN_ON_TURBO"));
                        else 
                                node.getAirThroughputInterface().setAirThroughputState(StandardAirThroughputStateName.FAN_ON);
                }
        }

        
}