stella.environment

Class EnvironmentSimulator

java.lang.Object

util.PropertyContainer

util.PropertyResources

util.rmi.RmiPropertyContainer

util.rmi.AbstractRmiListener

stella.rmi.AbstractRmiCasterAndListener

stella.rmi.ReceiverTorso

stella.rmi.GenericSimulator

stella.environment.EnvironmentSimulator

All Implemented Interfaces:

Cloneable, Remote, EventListener, Caster, ErrorSending, ErrorCaster, RmiAcknowledgeCaster, RmiCommandListener, RmiDoneCaster, RmiErrorCaster, WeatherListener, ExitCleaning, PropertySupplying, ResourceSupplying, RmiCaster, RmiEventListener, RmiListener, RmiPropertyBearing, StepInitializable

public class EnvironmentSimulator
extends GenericSimulator
implements WeatherListener

A class to simulate the environment. It extends a generic simulator and has the following properties:

• It serves two remote parameters, one giving the open/closed status of the roof, the other giving the weather condition.
• It has only one command-independend error, a NoRoof error that may occur any time. The weather errors are cast by the weather station which also serves the weather trigger. The weather station should use pre-recorded 'real' weather data, see FakeSensor.
• It serves only three commands OpenRoof, CloseRoof, and StatusEnvironment. All commands have a single acknowledge event. The time sent back in the acknowledge is handled in the super class.
• OpenRoof and CloseRoof may fail with a CannotOpenRoof or a CannotCloseRoof error, respectively. The probabilities for failures are KEY_OPENFAIL and KEY_CLOSEFAIL. If successfully conducted the roof-open trigger is toggled.
• The StatusEnvironment produces a random status event which carries the correct weather condition, but has random numbers in the sensor readings. It is always sent prior to method return.

Nested Class Summary

Nested classes/interfaces inherited from class stella.rmi.ReceiverTorso

ReceiverTorso.CommandHandler

Nested classes/interfaces inherited from class util.PropertyResources

PropertyResources.Load, PropertyResources.URLResource

Field Summary

Fields

Modifier and Type	Field and Description
private static String[]	ACKTIMES The acknowledge times for the known commands.
private static String[]	COMMANDS The known command types, used for acknowledges.
private static double	DEFCLOSEFAIL The default closinging failure probability .
private static String	DEFERRORCLASSES The default error list.
private static String	DEFERRORPROBABILITIES The default error probabilities.
private static String	DEFFAKE The default properties of the fake weather station.
private static String	DEFISOPEN The default name of the roof-is-open trigger.
private static double	DEFOPENFAIL The default opening failure probability .
private static double	DEFPOWERFAIL The default power-switching failure probability .
private static String	DEFSET The default properties of the parameter set of the simulator.
private static String[]	DIVERT The actual divert factors for the commands.
private static String[]	DONETIMES The 'true' command execution times.
private WeatherSurveying	fake The weather station.
static String	KEY_CLOSEFAIL The key to the sleep-time for an open-roof command.
static String	KEY_FAKE The key to the properties of the fake weather station.
static String	KEY_ISOPEN The key to the name of the is-open trigger.
static String	KEY_OPENFAIL The key to the sleep-time for an open-roof command.
static String	KEY_POWERFAIL The key to the probability of power-switch failure.
private ErrorEvent	lasterror The error event if command execution fails.

Fields inherited from class stella.rmi.GenericSimulator

ACKNOWLEDGEPREFIX, DEFUNIQUE, DEVIATEPREFIX, DONEPREFIX, KEY_ACCELERATE, KEY_ERRORCLASSES, KEY_ERRORINTERVAL, KEY_ERRORPROBABILITIES, KEY_GENERICACKNOWLEDGE, KEY_GENERICDEVIATE, KEY_GENERICDONE, KEY_SET, KEY_UNIQUE, random

Fields inherited from class stella.rmi.ReceiverTorso

KEY_BIND, KEY_BINDNAME, KEY_COMMANDCASTER, KEY_ERRORCOOL

Fields inherited from class util.rmi.AbstractRmiListener

KEY_ALIVE, KEY_EXPORTPORT, KEY_INIT, KEY_LISTENERNAME, KEY_RETRY, KEY_RETRYSLEEP, KEY_SHUTDOWNDELAY

Fields inherited from class util.PropertyResources

KEY_NOINITONCREATE, POSTFIX_ALPHABET, POSTFIX_BYTES, POSTFIX_DIR, POSTFIX_EXT, POSTFIX_FILE, POSTFIX_LIST, POSTFIX_MODTIME, POSTFIX_URL

Fields inherited from class util.PropertyContainer

KEY_LISTSEPARATOR, KEY_MAPKEYVALUECHAR, KEY_MAPSEPARATOR

Fields inherited from interface stella.rmi.RmiAcknowledgeCaster

NAMING_EXTENSION

Fields inherited from interface stella.rmi.RmiDoneCaster

NAMING_EXTENSION

Fields inherited from interface util.StepInitializable

KEY_INITDEPTH

Fields inherited from interface util.ResourceSupplying

KEY_URLRESOURCES, KEY_URLUSECONFIG, KEY_URLUSECURRENT, KEY_URLUSEHOME

Fields inherited from interface util.PropertySupplying

CONFIG, KEY_CLASS

Constructor Summary

Constructors

Constructor and Description
EnvironmentSimulator(Map prop) Constructs a new environment simulator.

Method Summary

Modifier and Type	Method and Description
boolean	accepts(CommandEvent ce) Returns true if this receiver accepts commands of the type handed over as an argument.
protected ErrorEvent	getLastError() Returns the last error that occured during command processing.
void	init2() Initializes the weather station.
void	initStep(int curstep) Initializes the weather station.
protected boolean	isAllowed(ErrorEvent ee) Checks if the error handed over is currently allowed to be thrown.
static void	main(String[] arg) Constructs a new environment simulator.
private static Map	myAugment(Map def) Augments the properties three times, for acknowledge and done times and for divert factors.
protected boolean	processCommand(CommandEvent ce, int acknr) Simulated command processing.
void	weatherChanged(WeatherEvent we) The weather event receiving edge of the environment master.

Methods inherited from class stella.rmi.GenericSimulator

augmentProperties, exit, formatWithGlobals, getAcknowledgeNumber, getCompletionTime, getNoisyTime, getParameter, getParameterByKey, getParameterByName, getParameterCluster, getParameterValueByKey, getParameterValueByName, getSimulationTime, getTrigger, getUnique, getValue, setParameter, setParameterValueByKey, setParameterValueByName, setTrigger, setValue, shutdown, sleepFor, statusSimulator

Methods inherited from class stella.rmi.ReceiverTorso

addRmiAcknowledgeListener, addRmiDoneListener, bindDefault, containsRemoteProperty, deregisterAtCaster, equals, getLastError, getRemoteProperties, getRemoteProperty, hashCode, notifyAcknowledgeListener, notifyDoneListener, registerAtCaster, removeRmiAcknowledgeListener, removeRmiDoneListener, rescanned, rmiCommand, sendAllPrematureDone, sendPrematureDone, setLastError, setRemoteProperty, toString, unbindDefault

Methods inherited from class stella.rmi.AbstractRmiCasterAndListener

addErrorListener, addRmiErrorListener, bindToRegistry, getBindName, isValid, notifyErrorListener, removeErrorListener, removeRmiErrorListener, sendError, sendError, sendError, sendStatus, sendStatus, sendStatus, unbindFromRegistry

Methods inherited from class util.rmi.AbstractRmiListener

allBound, blockBinding, blockBinding, disconnect, getIP, getListenerName, isConnected, listenerName, releaseBinding, releaseBinding, startBinding, startBinding

Methods inherited from class util.PropertyResources

clone, createFrom, createFrom, createFrom, createInstance, getApplet, getAsResources, getLocate, getPropertiesToKey, getPropertiesToKey, getResource, getResourceAsStream, getResourceFromKey, getResources, hasLocalURLs, initProperties, keyCreate, keyCreate, reload, setApplet

Methods inherited from class util.PropertyContainer

augment, augment, augment, augment, augment, defaultBoolean, defaultChar, defaultDouble, defaultFloat, defaultInt, defaultLong, defaultObject, defaultObject, defaultProperties, defaultProperty, getAsBoolean, getAsChar, getAsDouble, getAsEnums, getAsFloat, getAsInt, getAsList, getAsLong, getAsMap, getAsMap, getAsObject, getAsObject, getProperties, getProperty, has, isNew, parseObject, parseObject, reload, removeProperty, requires, setObject, setProperties, setProperty, stringProperties

Methods inherited from class java.lang.Object

finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface util.rmi.RmiCaster

bindToRegistry, isValid, unbindFromRegistry

Methods inherited from interface stella.ErrorCaster

addErrorListener, removeErrorListener

Methods inherited from interface util.rmi.RmiEventListener

getListenerName

Methods inherited from interface util.rmi.RmiListener

disconnect, isConnected

Methods inherited from interface util.PropertySupplying

defaultBoolean, defaultChar, defaultDouble, defaultFloat, defaultInt, defaultLong, defaultObject, defaultObject, defaultProperties, defaultProperty, getAsBoolean, getAsChar, getAsDouble, getAsFloat, getAsInt, getAsList, getAsLong, getAsMap, getAsObject, getAsObject, getProperties, getProperty, has, parseObject, removeProperty, setObject, setProperty, stringProperties

Field Detail

KEY_OPENFAIL

public static final String KEY_OPENFAIL

The key to the sleep-time for an open-roof command.

See Also:

Constant Field Values

KEY_CLOSEFAIL

public static final String KEY_CLOSEFAIL

The key to the sleep-time for an open-roof command.

See Also:

Constant Field Values

KEY_POWERFAIL

public static final String KEY_POWERFAIL

The key to the probability of power-switch failure.

See Also:

Constant Field Values

KEY_FAKE

public static final String KEY_FAKE

The key to the properties of the fake weather station.

See Also:

Constant Field Values

KEY_ISOPEN

public static final String KEY_ISOPEN

The key to the name of the is-open trigger.

See Also:

Constant Field Values

DEFOPENFAIL

private static final double DEFOPENFAIL

The default opening failure probability .

See Also:

Constant Field Values

DEFCLOSEFAIL

private static final double DEFCLOSEFAIL

The default closinging failure probability .

See Also:

Constant Field Values

DEFPOWERFAIL

private static final double DEFPOWERFAIL

The default power-switching failure probability .

See Also:

Constant Field Values

DEFFAKE

private static final String DEFFAKE

The default properties of the fake weather station.

See Also:

Constant Field Values

DEFSET

private static final String DEFSET

The default properties of the parameter set of the simulator.

See Also:

Constant Field Values

DEFISOPEN

private static final String DEFISOPEN

The default name of the roof-is-open trigger.

See Also:

Constant Field Values

DEFERRORCLASSES

private static final String DEFERRORCLASSES

The default error list.

See Also:

Constant Field Values

DEFERRORPROBABILITIES

private static final String DEFERRORPROBABILITIES

The default error probabilities.

See Also:

Constant Field Values

COMMANDS

private static final String[] COMMANDS

The known command types, used for acknowledges.

ACKTIMES

private static final String[] ACKTIMES

The acknowledge times for the known commands.

DONETIMES

private static final String[] DONETIMES

The 'true' command execution times.

DIVERT

private static final String[] DIVERT

The actual divert factors for the commands.

fake

private WeatherSurveying fake

The weather station. Use fake data.

lasterror

private ErrorEvent lasterror

The error event if command execution fails.

Constructor Detail

EnvironmentSimulator

public EnvironmentSimulator(Map prop)
                     throws RemoteException

Constructs a new environment simulator.

Throws:

RemoteException

Method Detail

myAugment

private static Map myAugment(Map def)

Augments the properties three times, for acknowledge and done times and for divert factors. Uses an own method to increase readability.

initStep

public void initStep(int curstep)
              throws InitException

Initializes the weather station. The weather station should use pre-recorded data and should consist of FakeSensor sensors only.

Specified by:

initStep in interface StepInitializable

Overrides:

initStep in class GenericSimulator

Throws:

InitException

init2

public void init2()

Initializes the weather station. The weather station should use pre-recorded data and should consist of FakeSensor sensors only.

accepts

public boolean accepts(CommandEvent ce)
                throws RemoteException

Returns true if this receiver accepts commands of the type handed over as an argument. An environment master accepts all sort of EnvironmentCommands.

Specified by:

accepts in interface RmiCommandListener

Throws:

RemoteException

isAllowed

protected boolean isAllowed(ErrorEvent ee)

Checks if the error handed over is currently allowed to be thrown. A NoRoof error is always allowed.

Specified by:

isAllowed in class GenericSimulator

getLastError

protected ErrorEvent getLastError()

Returns the last error that occured during command processing.

weatherChanged

public void weatherChanged(WeatherEvent we)

The weather event receiving edge of the environment master. This method is only reached when direct roof control is enabled with a call to the #direct method. Here, the weather event is checked for bad weather. If so, the roof operator gets directly a signal to close the roof without waiting for a close-roof from the default command caster. Note that closing of the roof is only allowed in robotic mode.
Implementation note: If the roof is closed, a new thread for this task is generated to allow fast-return of the listener method.

Specified by:

weatherChanged in interface WeatherListener

processCommand

protected boolean processCommand(CommandEvent ce,
                                 int acknr)

Simulated command processing. This does the following:

• If the command is a StatusEnvironment, go to sleep, then generate a status command from the weather station and the current roof-open trigger, send it back and return true.
• For the open and close roof commands, go to sleep for the GenericSimulator.getSimulationTime(stella.CommandEvent, int). Now, generate a random number and match it to the failure probabilities of these commands, KEY_OPENFAIL and KEY_CLOSEFAIL, respectively. If a failure is indicated, return false and update the last-error which will be fetched by the ReceiverTorso. If everything is correct, update the roof-trigger and return true.
• The park and reset commands are not supported. Instead of park use close roof.

Overrides:

processCommand in class GenericSimulator

main

public static void main(String[] arg)
                 throws RemoteException

Constructs a new environment simulator. The single argument supplied are the simulator properties.

Throws:

RemoteException