source: xssim/branches/tpiontek/src/example/localplugin/FCFSPreferedRandomClusterLocalPlugin.java @ 257

package example.localplugin;

import gridsim.Gridlet;

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

import schedframe.resources.PowerState;
import schedframe.scheduling.TaskInterface;
import schedframe.scheduling.events.SchedulingEvent;
import schedframe.scheduling.plugin.grid.ModuleList;
import test.rewolucja.GSSIMJobInterface;
import test.rewolucja.energy.profile.PStateType;
import test.rewolucja.resources.ResourceStatus;
import test.rewolucja.resources.ResourceType;
import test.rewolucja.resources.manager.implementation.ClusterResourceManager;
import test.rewolucja.resources.manager.interfaces.ResourceManagerInterface;
import test.rewolucja.resources.physical.implementation.ComputingNode;
import test.rewolucja.resources.physical.implementation.Processor;
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 FCFSPreferedRandomClusterLocalPlugin extends BaseLocalPlugin {

        private Random rand;
        private boolean init = true;
        
        int scenario = 1;
        String prefered = null;
        
        public FCFSPreferedRandomClusterLocalPlugin() {
                rand = new Random(5);
        }

        public SchedulingPlanInterfaceNew schedule(SchedulingEvent event, QueueList queues, JobRegistryInterface jobRegistry,
                         ResourceManagerInterface resManager, ModuleList modules) {
                
                ClusterResourceManager resourceManager = (ClusterResourceManager) resManager;
                
                if( init)
                {
                        List<Processor> cpus = resourceManager.getProcessors();
                        
                        for( Processor cpu : cpus)
                                cpu.getPowerInterface().setPState( PStateType.P0);
                        
                        init = false;
                }
                

                
                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) {
                                        
                                        ComputingNode node = chooseRandomProvider(resourceManager, ResourceStatus.FREE, task);
                                        
                                        if (node != null) {
                                                List<Processor> cpus = chooseProcessorsForExecution(node, ResourceStatus.FREE, task);
                                                addToSchedulingPlan(plan, task, cpus);
                                        }
                                        else
                                        {
                                                switch( scenario)
                                                {
                                                case 0: break;
                                                case 1: break;
                                                case 2:
                                                        //ComputingNode node = chooseRandomProvider(resourceManager, ResourceStatus.UNAVAILABLE, task);
                                                        break;
                                                }
                                        }
                                }
                        }
                        
                        switch( scenario)
                        {
                                case 0: break;
                                case 1: 
                                
                                        for( Processor cpu : resourceManager.getProcessors())
                                        {
                                                switch( cpu.getStatus())
                                                {
                                                        case FREE: cpu.getPowerInterface().setPState( PStateType.P3); break;
                                                        case PENDING: cpu.getPowerInterface().setPState( PStateType.P0); break;
                                                }
                                                
                                        }
                                        break;
                                
                                case 2:
                                        for( Processor cpu : resourceManager.getProcessors())
                                        {
                                                switch( cpu.getStatus())
                                                {
                                                        case FREE: cpu.getPowerInterface().setPowerState( PowerState.OFF); break;
                                                }       
                                        }
                                        break;
                                
                                default: break;
                        }
                        
                        break;
                }
                return plan;
        }

        private List<ComputingNode> findSuitableNodes(String model, int cpuRequest, ResourceStatus status, List<ComputingNode> nodes){
                List<ComputingNode> avNodes = new ArrayList<ComputingNode>();
                for(ComputingNode node: nodes)
                {
                        if( (model == null || node.getCategory().getName().equals(model)))
                        {       
                                @SuppressWarnings("unchecked")
                                List<Processor> cpus = (List<Processor>)node.getDescendantsByTypeAndStatus( ResourceType.CPU, status);
                                
                                if( cpus.size() >= cpuRequest)
                                        avNodes.add(node);
                        }
                }
                return avNodes;
        }
        
        private int getCpuRequest( TaskInterface<?> task)
        {
                int cpuRequest;
                
                try {
                        cpuRequest = Double.valueOf(task.getCpuCntRequest()).intValue();
                } catch (NoSuchFieldException e) {
                        cpuRequest = 1;
                }
                
                return cpuRequest;
        }
        
        private ComputingNode chooseRandomProvider(ClusterResourceManager resourceManager, ResourceStatus status, TaskInterface<?> task) {
                
                int cpuRequest = getCpuRequest(task);
                
                List<ComputingNode> nodes = null;
                
                String prefered = null;
                
                nodes = findSuitableNodes(prefered, cpuRequest, status, resourceManager.getComputingNodes());
                if( nodes.size() > 0)
                {       
                        int nodeIdx = rand.nextInt(nodes.size());
                        ComputingNode node = nodes.get(nodeIdx);
                                                
                        return node;
                }
                else
                {
                        System.out.println("NO resources: " + prefered);
                }
                
                if( prefered != null)
                {       
                        nodes = findSuitableNodes( getUnprefered(), cpuRequest, status, resourceManager.getComputingNodes());
                        if( nodes.size() > 0)
                        {       
                                int nodeIdx = rand.nextInt(nodes.size());
                                ComputingNode node = nodes.get(nodeIdx);
                                                        
                                return node;
                        }
                }
                        
                return null;
        }
        
        public String getName() {
                return getClass().getName();
        }

        public void init(Properties properties) {
                // no extra initialization is expected.
        }
        
        private List<Processor> chooseProcessorsForExecution( 
                        ComputingNode node, ResourceStatus status, TaskInterface<?> task) {
                
                int cpuRequest = getCpuRequest(task);

                List<Processor> cpus = (List<Processor>)node.getDescendantsByTypeAndStatus( ResourceType.CPU, status);
                
                return cpus.subList(0, cpuRequest);
        }
        
        private String getUnprefered()
        {
                if( prefered.equals("A"))
                        return "B";
                
                if( prefered.equals("B"))
                        return "A";
                
                return null;
        }

}