Class Simulator

java.lang.Object
  Manager
      Simulator

public class Simulator
extends Manager

   
 Manages a simulation. All nodes are instantiated in process.
 

Field Summary

static int

MAX_NODES_TO_SIMULATE

Constructor Summary

Simulator(int numNodes, java.lang.String topoFile)
Creates a new simulation

Method Summary

void	addTimerAt(int nodeAddr, long t, Callback callback) Adds a timer to be fired at time t
long	now() Retrieve current time in milliseconds
void	parseRestOfTopoFile() Parses rest of topology file.
boolean	sendNodeMsg(int nodeAddr, java.lang.String msg) Sends the msg to the the specified node
boolean	sendPkt(int from, int to, byte[] pkt) Send the pkt to the specified node
void	setTimescale(double timescale) Sets the amount to scale real time by.
void	start() Starts the simulation

Methods inherited from class Manager

addTimer, setFishnetFile, stop

Methods inherited from class java.lang.Object

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

Field Detail

MAX_NODES_TO_SIMULATE

public static final int MAX_NODES_TO_SIMULATE

See Also:

Constant Field Values

Constructor Detail

Simulator

public Simulator(int numNodes,
                 java.lang.String topoFile)
          throws java.lang.IllegalArgumentException,
                 java.io.FileNotFoundException

Creates a new simulation

Parameters:

numNodes - The number of nodes to simulate

topoFile - The name of the topology file to use

Throws:

java.lang.IllegalArgumentException - If the number of nodes to simulate is < 0 or > MAX_NODES_TO_SIMULATE

java.io.FileNotFoundException - If the given topology file cannot be found

Method Detail

start

public void start()

Starts the simulation

Specified by:

start in class Manager

sendPkt

public boolean sendPkt(int from,
                       int to,
                       byte[] pkt)
                throws java.lang.IllegalArgumentException

Send the pkt to the specified node

Overrides:

sendPkt in class Manager

Parameters:

from - The node that is sending the packet

to - Int spefying the destination node

pkt - The packet to be sent, serialized to a byte array

Returns:

True if the packet was sent, false otherwise

Throws:

java.lang.IllegalArgumentException - If the arguments are invalid

now

public long now()

Retrieve current time in milliseconds

Specified by:

now in class Manager

Returns:

Current time in milliseconds

addTimerAt

public void addTimerAt(int nodeAddr,
                       long t,
                       Callback callback)

Adds a timer to be fired at time t

Overrides:

addTimerAt in class Manager

Parameters:

nodeAddr - Addr of node that is registering this timer

t - The time when the timer should fire. Its in milliseconds

callback - The callback to be invoked when the timer fires

sendNodeMsg

public boolean sendNodeMsg(int nodeAddr,
                           java.lang.String msg)

Sends the msg to the the specified node

Specified by:

sendNodeMsg in class Manager

Parameters:

nodeAddr - Address of the node to whom the message should be sent

msg - The msg to send to the node

Returns:

True if msg sent, false if address is not valid

setTimescale

public void setTimescale(double timescale)

Sets the amount to scale real time by.

Overrides:

setTimescale in class Manager

Parameters:

timescale - The amount to scale real time by

parseRestOfTopoFile

public void parseRestOfTopoFile()

Parses rest of topology file. Has public accesibility since used as a callback