net.clackrouter.component.extension
Class Loss

java.lang.Object
  net.clackrouter.component.base.ClackComponent
      net.clackrouter.component.extension.Loss

All Implemented Interfaces:

Alarm

public class Loss
extends ClackComponent

Component that randomly drops packets based on a user-specified drop rate.

Nested Class Summary

Nested classes/interfaces inherited from class net.clackrouter.component.base.ClackComponent

ClackComponent.Waiter

Field Summary

static int	DEFAULT_LOSS
static int	PORT_IN
static int	PORT_OUT

Fields inherited from class net.clackrouter.component.base.ClackComponent

componentCell, m_has_error, m_log, m_name, m_num_ports, m_packetcount_in, m_packetcount_out, m_ports, mListeners, mRouter, pendingError, SIGNAL_ERROR_LEN_MSEC, UNIQUE_COUNT, view

Constructor Summary

Loss(Router r, java.lang.String name)

Loss(Router r, java.lang.String name, int loss)

Method Summary

void	acceptPacket(VNSPacket packet, int port_number) Randomly test to see if the packet should be dropped, otherwise forward it unmodified
void	dropNextPacket()
java.awt.Color	getColor() The color this component should be rendered in, assuming a standard component rendering by the ComponentView.ComponentRenderer class.
int	getDrops()
float	getLoss()
javax.swing.JPanel	getPropertiesView() Method for getting the properties view associated with this component Property views are used to display more detailed information about internal component state.
java.util.Properties	getSerializableProperties(boolean isTransient) Save the current loss value
void	initializeProperties(java.util.Properties props) Set the current loss rate based on serialized properties
boolean	isModifying() Reports whether this component modifies packets passed through it This value is used by the static checking algorithm used to make sure port connections are valid.
void	setLoss(float l)
protected void	setupPorts(int numports) Allocates an array of ClackPort objects to be used by this component

Methods inherited from class net.clackrouter.component.base.ClackComponent

createCopy, createInputPullPort, createInputPushPort, createOutputPullPort, createOutputPushPort, error, fireListeners, getComponentCell, getHierarchicalView, getLog, getName, getNumPorts, getPacketCountIn, getPacketCountOut, getPendingError, getPort, getRouter, getTime, getTypeName, getUniqueCount, getView, handlePullRequest, hasError, isHierarchical, log, notifyAlarm, poll, registerListener, sendOutPort, setAlarm, setComponentCell, setName, setPendingError, setView, showErrorDialog, signalError, try_repaint, unregisterListener

Methods inherited from class java.lang.Object

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

Field Detail

PORT_IN

public static int PORT_IN

PORT_OUT

public static int PORT_OUT

DEFAULT_LOSS

public static int DEFAULT_LOSS

Constructor Detail

Loss

public Loss(Router r,
            java.lang.String name)

Loss

public Loss(Router r,
            java.lang.String name,
            int loss)

Method Detail

setupPorts

protected void setupPorts(int numports)

Description copied from class: ClackComponent

Allocates an array of ClackPort objects to be used by this component

Overrides:

setupPorts in class ClackComponent

Parameters:

numports - the number of ports to create

isModifying

public boolean isModifying()

Description copied from class: ClackComponent

Reports whether this component modifies packets passed through it This value is used by the static checking algorithm used to make sure port connections are valid. Sub-classes that do not modify packets should override this method

Overrides:

isModifying in class ClackComponent

Returns:

by default, we assume the component modifies packets

getLoss

public float getLoss()

setLoss

public void setLoss(float l)

acceptPacket

public void acceptPacket(VNSPacket packet,
                         int port_number)

Randomly test to see if the packet should be dropped, otherwise forward it unmodified

Overrides:

acceptPacket in class ClackComponent

Parameters:

packet - The pushed packet

port_number - The number of the port that this packet is arriving on

getPropertiesView

public javax.swing.JPanel getPropertiesView()

Description copied from class: ClackComponent

Method for getting the properties view associated with this component Property views are used to display more detailed information about internal component state. This method creates a default property view, and can be overriden to provide custom properties views

Overrides:

getPropertiesView in class ClackComponent

Returns:

this component's property view

getDrops

public int getDrops()

getSerializableProperties

public java.util.Properties getSerializableProperties(boolean isTransient)

Save the current loss value

Overrides:

getSerializableProperties in class ClackComponent

Parameters:

isTransient - flag indicating if serialization is transient

Returns:

all property key-value pairs to serialize

initializeProperties

public void initializeProperties(java.util.Properties props)

Set the current loss rate based on serialized properties

Overrides:

initializeProperties in class ClackComponent

Parameters:

props - all property values serialized for this component

dropNextPacket

public void dropNextPacket()

getColor

public java.awt.Color getColor()

Description copied from class: ClackComponent

The color this component should be rendered in, assuming a standard component rendering by the ComponentView.ComponentRenderer class.

Other renderers may ignore this value.

Overrides:

getColor in class ClackComponent

Returns:

the rendering color