source: DCWoRMS/branches/coolemall/src/example/localplugin/Cluster_FCFSBF_ConsolidationLowPower_NodePowMan_Plugin.java @ 1415

package example.localplugin;

import gridsim.dcworms.DCWormsTags;

import java.util.ArrayList;
import java.util.Collections;
import java.util.Comparator;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import schedframe.events.scheduling.SchedulingEvent;
import schedframe.resources.ResourceStatus;
import schedframe.resources.StandardResourceType;
import schedframe.resources.computing.ComputingResource;
import schedframe.resources.computing.Node;
import schedframe.resources.computing.Processor;
import schedframe.resources.computing.profiles.energy.airthroughput.StandardAirflowStateName;
import schedframe.resources.computing.profiles.energy.power.PState;
import schedframe.resources.computing.profiles.energy.power.StandardPowerStateName;
import schedframe.resources.devices.Device;
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.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 Cluster_FCFSBF_ConsolidationLowPower_NodePowMan_Plugin extends BaseLocalSchedulingPlugin {

        public Cluster_FCFSBF_ConsolidationLowPower_NodePowMan_Plugin () {
        }

        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:
                        // our tasks are placed only in first queue (see
                        // BaseLocalSchedulingPlugin.placeJobsInQueues() method)
                        TaskQueue q = queues.get(0);
                        // check all tasks in queue

                        List<Node> notSelectedNodes = resourceManager.getNodes();
                        
                        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) {

                                        Map<ResourceUnitName, ResourceUnit> choosenResources =  chooseResourcesForExecution(resourceManager, task);
                                        if (choosenResources  != null) {
                                                addToSchedulingPlan(plan, task, choosenResources);
                                                ProcessingElements pe = (ProcessingElements) choosenResources.get(StandardResourceUnitName.PE);
                                                Node node = (Node) pe.get(0).getParent();
                                                notSelectedNodes.remove(node);
                                        } 
                                }
                        }
                        turnOffIdleNodes(notSelectedNodes);
                        break;
                }
                return plan;
        }
        
        private Map<ResourceUnitName, ResourceUnit> chooseResourcesForExecution(ClusterResourceManager resourceManager, TaskInterface<?> task){

                List<Node> nodes = resourceManager.getNodes();
                List<Node> availableNodes = findSuitableNodes(task, nodes);
                Node node;
                if(availableNodes.size() == 0){
                        
                        nodes = (List<Node>) resourceManager.getResourcesByTypeWithStatus(StandardResourceType.Node, ResourceStatus.UNAVAILABLE);

                        Collections.sort(nodes, new PowerComparator());
                        node = turnOnFirstNode(nodes, task);
                        if(node == null)
                                return null;
                }else{
                        Collections.sort(availableNodes, new PowerComparator());
                        node = availableNodes.get(0);
                } 
                Map<ResourceUnitName, ResourceUnit> map = new HashMap<ResourceUnitName, ResourceUnit>();
                List<ComputingResource> choosenResources =  new ArrayList<ComputingResource>();
                int cpuRequest;
                try {
                        cpuRequest = Double.valueOf(task.getCpuCntRequest()).intValue();
                } catch (NoSuchFieldException e) {
                        cpuRequest = 0;
                }
                for (int i = 0; i < node.getProcessors().size() && cpuRequest > 0; i++) {
                        if (node.getProcessors().get(i).getStatus() == ResourceStatus.FREE) {
                                choosenResources.add(node.getProcessors().get(i));
                                cpuRequest--;
                        }
                }
                ProcessingElements result = new ProcessingElements(node.getFullName());
                result.addAll(choosenResources);
                map.put(StandardResourceUnitName.PE, result);
                return map;
        }
        
        private List<Node> findSuitableNodes(TaskInterface<?> task, List<Node> nodes) {
                int cpuRequest;
                try {
                        cpuRequest = Double.valueOf(task.getCpuCntRequest()).intValue();
                } catch (NoSuchFieldException e) {
                        cpuRequest = 1;
                }

                List<Node> suitableNodes = new ArrayList<Node>();
                for(Node node: nodes){
                        if(node.getFreeProcessorsNumber() >= cpuRequest){
                                suitableNodes.add(node);
                        }       

                }
                return suitableNodes;
        }
        
        private Node turnOnFirstNode(List<Node> nodes, TaskInterface<?> task){
                Node startedNode = null;

                int cpuRequest;
                try {
                        cpuRequest = Double.valueOf(task.getCpuCntRequest()).intValue();
                } catch (NoSuchFieldException e) {
                        cpuRequest = 0;
                }
                
                for(Node node: nodes){
                        
                        if (cpuRequest != 0) {

                                List<Processor> processors = node.getProcessors();
                                if (processors.size() < cpuRequest) {
                                        if(processors.size() == 0){
                                                if(node.getProcessors().size() < cpuRequest)
                                                        continue;
                                        }
                                }
                                
                                int freeProcessor = 0;
                                for(Processor processor: processors){
                                        if(processor.getStatus() == ResourceStatus.FREE || processor.getStatus() == ResourceStatus.UNAVAILABLE)
                                                freeProcessor++;
                                }
                                
                                if(freeProcessor < cpuRequest)
                                        continue;
                                else {
                                        for(Device device: node.getParent().getResourceCharacteristic().getDevices()){
                                                if(device.getType().equals(StandardResourceType.Fan)){
                                                        device.getAirflowInterface().setAirflowState(StandardAirflowStateName.ON);
                                                        break;
                                                }
                                        }
                                        node.getPowerInterface().setPowerState(StandardPowerStateName.ON);
                                        startedNode = node;
                                        break;
                                }                               
                        }
                }
                return startedNode;
        }
        private void turnOffIdleNodes(List<Node> nodes){
                for(Node node : nodes){
                        int freeProcessors = 0;
                        for(Processor proc: node.getProcessors()){
                                if(proc.getStatus() == ResourceStatus.FREE)
                                        freeProcessors++;
                        }
                        
                        if(freeProcessors == node.getProcessors().size()) {
                                for(Device device: node.getParent().getResourceCharacteristic().getDevices()){
                                        if(device.getType().equals(StandardResourceType.Fan)){
                                                device.getAirflowInterface().setAirflowState(StandardAirflowStateName.OFF);
                                                break;
                                        }
                                }
                                node.getPowerInterface().setPowerState(StandardPowerStateName.OFF);
                        }

                }
        }
        
        class PowerComparator implements Comparator<Node>{
                
            public int compare(Node node1, Node node2){    
                double node1Rank = Double.MAX_VALUE;
                double node2Rank = Double.MAX_VALUE;

                PState pState;
                for(Processor proc: node1.getProcessors()){
                        if(proc.getPowerInterface() != null) {
                                pState = proc.getPowerInterface().getLowestPState();
                                if(pState != null && pState.getPower() < node1Rank){
                                        node1Rank = proc.getPowerInterface().getLowestPState().getFrequency();
                                }
                        }
                }
                for(Processor proc: node2.getProcessors()){
                        if(proc.getPowerInterface() != null) {
                                pState = proc.getPowerInterface().getLowestPState();
                                if(pState != null && pState.getPower() < node2Rank){
                                        node2Rank = proc.getPowerInterface().getLowestPState().getFrequency();
                                }
                        }
                }
                
                if(node1Rank > node2Rank)
                        return 1;
                else if (node1Rank < node2Rank)
                        return -1;
                else return 0;     
            }
        }

}