freenet.node

Class UptimeEstimator

java.lang.Object

freenet.node.UptimeEstimator

All Implemented Interfaces:

java.lang.Runnable

public class UptimeEstimator
extends java.lang.Object
implements java.lang.Runnable

A class to estimate the node's average uptime. Every 5 minutes (with a fixed offset), we write an integer (the number of minutes since the epoch) to the end of a file. We rotate it when it gets huge. We read it to figure out how many of the 5 minute slots in the last X period are occupied.

Constructor Summary

Constructors

Constructor and Description
UptimeEstimator(ProgramDirectory runDir, Ticker ticker, byte[] bs)

Method Summary

Modifier and Type	Method and Description
double	getUptime() Get the node's uptime fraction over the past 48 hours.
double	getUptimeWeek() Get the node's uptime fraction over the past 168 hours.
void	run()
void	start()

Methods inherited from class java.lang.Object

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

Constructor Detail

UptimeEstimator

public UptimeEstimator(ProgramDirectory runDir,
                       Ticker ticker,
                       byte[] bs)

Method Detail

start

public void start()

run

public void run()

Specified by:

run in interface java.lang.Runnable

getUptime

public double getUptime()

Get the node's uptime fraction over the past 48 hours.

Returns:

fraction between 0.0 and 1.0.

getUptimeWeek

public double getUptimeWeek()

Get the node's uptime fraction over the past 168 hours.

Returns:

fraction between 0.0 and 1.0.