IA.DistFS

Class Servers

java.lang.Object

IA.DistFS.Servers

public class Servers
extends java.lang.Object

Simulates a distributed file system with replication. Each server stores a number of files Files are replicated in at least n of N servers. Each server can compute the time of transmission to a user

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
class	Servers.WrongParametersException Exception class

Constructor Summary

Constructors

Constructor and Description
Servers(int nserv, int nrep, int seed) Generates a Simulated Distributed File System

Method Summary

Methods

Modifier and Type	Method and Description
java.util.Set<java.lang.Integer>	fileLocations(int fileID) Return the servers where the file is
int	size()
int	tranmissionTime(int serverID, int userID) Return the transmission time of a file from a serverID to a userID

Methods inherited from class java.lang.Object

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

Constructor Detail

Servers

public Servers(int nserv,
       int nrep,
       int seed)
        throws Servers.WrongParametersException

Generates a Simulated Distributed File System

Parameters:

nserv - Number of Servers

nrep - Number of minimum replications for file

seed - Random Number Generator seed

Throws:

Servers.WrongParametersException

Method Detail

tranmissionTime

public int tranmissionTime(int serverID,
                  int userID)

Return the transmission time of a file from a serverID to a userID

Parameters:

serverID -

userID -

Returns:

fileLocations

public java.util.Set<java.lang.Integer> fileLocations(int fileID)

Return the servers where the file is

Parameters:

fileID - ID of the file

Returns:

size

public int size()