pulling
Class Puller

java.lang.Object
  pulling.Puller

public class Puller
extends java.lang.Object

This class is responsible for managing the Puller module on every server. It is also responsible for communication with the central Mapper.

Author:

Majd Kokaly

Constructor Summary

Puller()

Method Summary

AvailabilityManager	getAvailabilityManager()
CPU_EatersLauncher	getCpuEater()
int	getPullerPort()
static void	main(java.lang.String[] args) This is the main loop.
static double[]	parseWeightsString(java.lang.String weightString, int n)
void	setAvailabilityManager(AvailabilityManager availabilityManager)
void	setCpuEater(CPU_EatersLauncher cpuEater)
void	setPullerPort(int pullerPort)
void	startAvailabilityManager(double systemResolution, java.lang.String mapperHostName, int mode, double[] weights, double c) This method is invoked from the main method it initialize the Availability Manager object.
void	startCPUEater(double percentage, double forHowLong) This method start a CPU_Eater that eats a percentage of the CPU for an specific amount of time

Methods inherited from class java.lang.Object

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

Constructor Detail

Puller

public Puller()

Method Detail

getAvailabilityManager

public AvailabilityManager getAvailabilityManager()

setAvailabilityManager

public void setAvailabilityManager(AvailabilityManager availabilityManager)

getCpuEater

public CPU_EatersLauncher getCpuEater()

setCpuEater

public void setCpuEater(CPU_EatersLauncher cpuEater)

getPullerPort

public int getPullerPort()

setPullerPort

public void setPullerPort(int pullerPort)

startAvailabilityManager

public void startAvailabilityManager(double systemResolution,
                                     java.lang.String mapperHostName,
                                     int mode,
                                     double[] weights,
                                     double c)

This method is invoked from the main method it initialize the Availability Manager object.

Parameters:

systemResolution - the system resolution. Which is the time that the Availabilbility Manager object send a new value of aj

mapperHostName - it is the host name of the Mapper machine.

mode - this defines the mode in which the Availability Manager works

weights - is the array of weights. Please refer to the Thesis document Section Availability model.

c - Please refer to the Thesis document Section Availability model.

startCPUEater

public void startCPUEater(double percentage,
                          double forHowLong)

This method start a CPU_Eater that eats a percentage of the CPU for an specific amount of time

Parameters:

percentage - the percentage to be eaten from the CPU

forHowLong - the time in minutes for how long for the eater to work.

main

public static void main(java.lang.String[] args)

This is the main loop. The puller keeps running in an infinite loop until the Mapper module sends a kill message.

Parameters:

args -

parseWeightsString

public static double[] parseWeightsString(java.lang.String weightString,
                                          int n)