source: DCWoRMS/branches/coolemall/src/schedframe/resources/devices/DevicePowerInterface.java @ 1317

package schedframe.resources.devices;

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

import org.joda.time.DateTimeUtils;

import schedframe.Parameters;
import schedframe.resources.computing.profiles.energy.EnergyEvent;
import schedframe.resources.computing.profiles.energy.EnergyEventType;
import schedframe.resources.computing.profiles.energy.power.PowerProfile;
import schedframe.resources.computing.profiles.energy.power.PowerState;
import schedframe.resources.computing.profiles.energy.power.PowerStateName;
import schedframe.resources.computing.profiles.energy.power.PowerUsage;
import schedframe.resources.computing.profiles.energy.power.StandardPowerStateName;
import schedframe.resources.computing.profiles.energy.power.ui.PowerInterface;

public class DevicePowerInterface implements PowerInterface{
        
        protected PowerStateName currentPowerState;
        protected PowerProfile powerProfile;
        protected PhysicalResource resource;
        
        public DevicePowerInterface(PhysicalResource resource, PowerProfile powerProfile){
                this.resource = resource;
                this.powerProfile = powerProfile;
                this.currentPowerState = StandardPowerStateName.ON;
        }
        
        public boolean setPowerState(PowerStateName state) {
                if(supportPowerState(state)){
                        currentPowerState = state;

                        resource.handleEvent(new EnergyEvent(EnergyEventType.POWER_STATE_CHANGED, resource.getFullName()));

                        return true;
                }
                return false;
        }
        

        public PowerStateName getPowerState() {
                return currentPowerState;
        }

        public List<PowerState> getSupportedPowerStates() throws NoSuchFieldException {
                List<PowerState> powerStates = new ArrayList<PowerState>();
                for(PowerState powerState: powerProfile.getSupportedPowerStates()){
                        powerStates.add(powerState);
                }
                return powerStates;
        }

        public boolean supportPowerState(PowerStateName state) {
                for(PowerState powerState: powerProfile.getSupportedPowerStates()){
                        if(powerState.getName().equals(state)){
                                return true;
                        }
                }
                return false;
                
        }
        
        public double getPowerConsumption(PowerStateName state) throws NoSuchFieldException {
                double powerConsumption = 0;
                if(supportPowerState(state)){
                        for(PowerState powerState: powerProfile.getSupportedPowerStates()){
                                if(powerState.getName().equals(state)){
                                        powerConsumption = powerState.getPowerUsage();
                                        break;
                                }
                        }
                } else {
                        throw new NoSuchFieldException("Power state not supported");
                }
                return powerConsumption;
        }

        public PowerUsage getRecentPowerUsage() {
                PowerUsage powerUsage = null;
                int lastIdx = getPowerUsageHistory().size() - 1;
                if(lastIdx >= 0)
                        powerUsage = getPowerUsageHistory().get(lastIdx);
                else {  
                        try {
                                powerUsage = new PowerUsage(DateTimeUtils.currentTimeMillis(), getPowerConsumption(currentPowerState));
                        } catch (NoSuchFieldException e) {
                        }
                }
                return powerUsage;
        }
        
        public List<PowerUsage> getPowerUsageHistory(){
                return powerProfile.getPowerUsageHistory();
        }
        
        public Parameters getParameters() {
                return powerProfile.getParameters();
        }

}