source: DCWoRMS/trunk/src/example/localplugin/FCFSBF_FanManagementClusterPlugin.java @ 750

package example.localplugin;

import gridsim.dcworms.DCWormsTags;

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.scheduling.manager.resources.ClusterResourceManager;
import schedframe.scheduling.manager.resources.ResourceManager;
import schedframe.scheduling.manager.tasks.JobRegistry;
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);
                                        if (node != null) {
                                                node.getAirThroughputInterface().setAirThroughputState(StandardAirThroughputStateName.FAN_ON);
                                                notSelectedNodes.remove(node);
                                                addToSchedulingPlan(plan, task, node.getName());
                                        }
                                }
                        }
                        turnOffIdleNodes(notSelectedNodes);
                        break;
                }
                return plan;
        }

        private ComputingNode chooseRandomProvider(ClusterResourceManager resourceManager) {
                List<ComputingNode> nodes = resourceManager.getComputingNodes();
                int nodeIdx = rand.nextInt(nodes.size());
                return nodes.get(nodeIdx);
        }
        
        private void turnOffIdleNodes(List<ComputingNode> nodes){
                for(ComputingNode node : nodes){
                        if(node.getFreeProcessorsNumber() == node.getProcessorsNumber()){
                                node.getAirThroughputInterface().setAirThroughputState(StandardAirThroughputStateName.FAN_OFF);
                        }
                }
        }


}