verinec.netsim.components.layers
Class PhysicalNetworkLayer

java.lang.Object
  desmoj.core.simulator.NamedObject
      desmoj.core.simulator.ModelComponent
          verinec.netsim.components.layers.abstractNetworkLayer
              verinec.netsim.components.layers.PhysicalNetworkLayer

All Implemented Interfaces:

Observer, Subject

public class PhysicalNetworkLayer
extends abstractNetworkLayer

A physical Network Layer. It represents a wire/connection and the NICs connected to it.

Version:

$Revision:835 $

Author:

Dominik Jungo

Field Summary

private Vector	bindings
private Logger	jlogger
private Vector	upperobserver

Constructor Summary

PhysicalNetworkLayer(Model owner, EventProcessor processor)
Creates a new physical Network Layer

Method Summary

void	addBinding(String binding) adds a binding to this interface
void	addObserverElement(Object arg0) adds an Observer
void	attachUpper(Observer observer) Attaches a Observer to this Subject
void	getDownEvent(PacketArrivedEventDown event) Receives a PacketEventArrived from above.
void	getUpEvent(PacketArrivedEventUp event) Receives a PacketEventArrived from below.
boolean	hasBinding(String binding) checks if there is a binding to this interface.
Enumeration	observerElements() gets all upper observer of this Layer.
boolean	removeObserver(Object arg0) removes an observer
void	sendDown(Packet packet, double timeoffset, ModelComponent sender, ILogger logger) sends down a packet to the next layer.
void	sendUp(Packet packet, double timeoffset, ModelComponent sender, ILogger logger) sends up a packet to the next layer

Methods inherited from class verinec.netsim.components.layers.abstractNetworkLayer

addAddress, addProcessor, addresses, attachLower, compareAddress, detachLower, detachUpper, getFirstAddress, getLayerName, getLowerobserver, getNode, getProcessor, processorelements, sendDown, sendUp, setNode

Methods inherited from class desmoj.core.simulator.ModelComponent

current, currentEntity, currentEvent, currentModel, currentSimProcess, currentTime, debugIsOn, debugOff, debugOn, epsilon, getModel, isExperimentCompatible, isModelCompatible, sendDebugNote, sendMessage, sendTraceNote, sendWarning, skipTraceNote, skipTraceNote, traceIsOn, traceOff, traceOn

Methods inherited from class desmoj.core.simulator.NamedObject

getName, getQuotedName, rename, toString

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Detail

upperobserver

private Vector upperobserver

bindings

private Vector bindings

jlogger

private Logger jlogger

Constructor Detail

PhysicalNetworkLayer

public PhysicalNetworkLayer(Model owner,
                            EventProcessor processor)

Creates a new physical Network Layer

Parameters:

owner - a Model

processor - a Processor

Method Detail

getDownEvent

public void getDownEvent(PacketArrivedEventDown event)

Description copied from interface: Observer

Receives a PacketEventArrived from above. Equivalent to the update method in the Observer Designpattern

Specified by:

getDownEvent in interface Observer

Overrides:

getDownEvent in class abstractNetworkLayer

Parameters:

event - a PacketEventArrived to be received

See Also:

abstractNetworkLayer.getDownEvent(verinec.netsim.events.PacketArrivedEventDown)

getUpEvent

public void getUpEvent(PacketArrivedEventUp event)

Description copied from interface: Observer

Receives a PacketEventArrived from below. Equivalent to the update method in the Observer Designpattern

Specified by:

getUpEvent in interface Observer

Overrides:

getUpEvent in class abstractNetworkLayer

Parameters:

event - a PacketEventArrived to be received

See Also:

if it still occurs a ErrorMessage is being sent to the Simulation Framework

sendDown

public void sendDown(Packet packet,
                     double timeoffset,
                     ModelComponent sender,
                     ILogger logger)

sends down a packet to the next layer. this should not occur. if it still occurs a ErrorMessage is being sent to the Simulation Framework.

Parameters:

packet - the packet that should be send

timeoffset - timeoffset when the packet should arrive (in the lower layer)

sender - the sender of the packet

logger - a logger

sendUp

public void sendUp(Packet packet,
                   double timeoffset,
                   ModelComponent sender,
                   ILogger logger)

sends up a packet to the next layer

Parameters:

packet - a packet

timeoffset - timeoffset when the packet should arrive (in the upper layer)

sender - sender of the packet

logger - a logger

addObserverElement

public void addObserverElement(Object arg0)

adds an Observer

Parameters:

arg0 - an Observer

attachUpper

public void attachUpper(Observer observer)

Description copied from interface: Subject

Attaches a Observer to this Subject

Specified by:

attachUpper in interface Subject

Overrides:

attachUpper in class abstractNetworkLayer

Parameters:

observer - The observing Object

See Also:

abstractNetworkLayer.attachUpper(verinec.netsim.components.layers.Observer)

removeObserver

public boolean removeObserver(Object arg0)

removes an observer

Parameters:

arg0 - an observer

Returns:

the observer

observerElements

public Enumeration observerElements()

gets all upper observer of this Layer. Upper observers are in this case layer 2 parts of NICs.

Returns:

the upper observers.

addBinding

public void addBinding(String binding)

adds a binding to this interface

Parameters:

binding - a binding

hasBinding

public boolean hasBinding(String binding)

checks if there is a binding to this interface.

Parameters:

binding - a binding name

Returns:

true if the layer has the defined binding, false otherwise