source: xssim/trunk/src/example/localplugin/FCFSConsolidationClusterLocalPlugin.java @ 192

package example.localplugin;

import gridsim.Gridlet;

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 java.util.Properties;

import schedframe.resources.units.Memory;
import schedframe.resources.units.ResourceUnit;
import schedframe.scheduling.TaskInterface;
import schedframe.scheduling.events.SchedulingEvent;
import schedframe.scheduling.plugin.grid.ModuleList;
import schedframe.scheduling.utils.ResourceParameterName;
import test.rewolucja.GSSIMJobInterface;
import test.rewolucja.resources.ProcessingElements;
import test.rewolucja.resources.ResourceStatus;
import test.rewolucja.resources.manager.implementation.ClusterResourceManager;
import test.rewolucja.resources.manager.interfaces.ResourceManagerInterface;
import test.rewolucja.resources.physical.base.ComputingResource;
import test.rewolucja.resources.physical.implementation.ComputingNode;
import test.rewolucja.scheduling.JobRegistryInterface;
import test.rewolucja.scheduling.plan.SchedulingPlanInterfaceNew;
import test.rewolucja.scheduling.plan.SchedulingPlanNew;
import test.rewolucja.scheduling.queue.Queue;
import test.rewolucja.scheduling.queue.QueueList;

public class FCFSConsolidationClusterLocalPlugin extends BaseLocalPlugin {

        public FCFSConsolidationClusterLocalPlugin () {
        }

        public SchedulingPlanInterfaceNew schedule(SchedulingEvent event, QueueList queues, JobRegistryInterface jobRegistry,
                        ResourceManagerInterface resManager, ModuleList modules) {

                ClusterResourceManager resourceManager = (ClusterResourceManager) resManager;
                SchedulingPlanNew plan = new SchedulingPlanNew();
                // chose 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
                        // BaseLocalPlugin.placeJobsInQueues() method)
                        Queue q = queues.get(0);
                        // check all tasks in queue

                        for (int i = 0; i < q.size(); i++) {
                                GSSIMJobInterface<?> job = q.get(i);
                                TaskInterface<?> task = (TaskInterface<?>) job;
                                // if status of the tasks in READY
                                if (task.getStatus() == Gridlet.READY) {

                                        Map<ResourceParameterName, ResourceUnit> choosenResources = chooseResourcesForExecution(resourceManager, task);
                                        if (choosenResources  != null) {
                                                addToSchedulingPlan(plan, task, choosenResources);
                                        } 
                                }
                        }

                        break;
                }
                return plan;
        }
        
        private HashMap<ResourceParameterName, ResourceUnit> chooseResourcesForExecution(ClusterResourceManager resourceManager, TaskInterface<?> task) {

                List<ComputingNode> nodes = resourceManager.getComputingNodes();
                nodes = findSuitableNodes(task, nodes);
                Collections.sort(nodes, new Comparator<ComputingNode>(){
                    public int compare(ComputingNode node1, ComputingNode node2){    
                        return node1.getCategory().getName().compareTo(node2.getCategory().getName());
                    }
                });
                if(nodes.size() > 0)
                {
                        ComputingNode node = nodes.get(0);
                        HashMap<ResourceParameterName, ResourceUnit> map = new HashMap<ResourceParameterName, ResourceUnit>();
                        List<ComputingResource> choosenResources =  new ArrayList<ComputingResource>();
                        int cpuRequest;
                        try {
                                cpuRequest = Double.valueOf(task.getCpuCntRequest()).intValue();
                        } catch (NoSuchFieldException e) {
                                cpuRequest = 1;
                        }
                        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.getName());
                        result.addAll(choosenResources);
                        map.put(ResourceParameterName.PROCESSINGELEMENTS, result);
                        
                        int memoryRequest;
                        try {
                                memoryRequest = Double.valueOf(task.getMemoryRequest()).intValue();
                        } catch (NoSuchFieldException e) {
                                memoryRequest = 0;
                        }
                        if (memoryRequest != 0) {
                                Memory memory = new Memory(node.getMemoryUnit(), memoryRequest, memoryRequest);
                                map.put(ResourceParameterName.MEMORY, memory);
                        }
                        return map;
                } else 
                        return null;
        }
        
        private List<ComputingNode> findSuitableNodes(TaskInterface<?> task, List<ComputingNode> nodes){
                int cpuRequest;
                try {
                        cpuRequest = Double.valueOf(task.getCpuCntRequest()).intValue();
                } catch (NoSuchFieldException e) {
                        cpuRequest = 1;
                }
                int memoryRequest;
                try {
                        memoryRequest = Double.valueOf(task.getMemoryRequest()).intValue();
                } catch (NoSuchFieldException e) {
                        memoryRequest = 0;
                }
                List<ComputingNode> suitableNodes = new ArrayList<ComputingNode>();
                for(ComputingNode node: nodes){
                        if(node.getFreeProcessorsNumber() >= cpuRequest && node.getFreeMemory() >= memoryRequest){
                                suitableNodes.add(node);
                        }
                }
                return suitableNodes;
        }
        
        public String getName() {
                return getClass().getName();
        }

        public void init(Properties properties) {
                // no extra initialization is expected.
        }

}