com.wpg.proxy
Class ProxyStatistics

java.lang.Object
  com.wpg.proxy.ProxyStatistics

public class ProxyStatistics
extends java.lang.Object

ProxyStatistics object is used to track statistics collected during the proxy execution to report to the user via an HTTP request directed to the proxy itself, rather than meant for a remote host or port

Field Summary

static int	FAILURE
static int	STOPPED
static int	SUCCESS

Method Summary

void	addDuration(double duration) add a duration measurement to the collection of statistics
double	getDurationAvg()
double	getDurationCnt()
double	getDurationMax()
double	getDurationMin()
double	getDurationStdDev() Calculate Standard Deviation as the SQRT of variance based on the formula from: WIKI Variance Calculation Page: Algorithm II
long	getFailureTransactions() get failed transaction count
java.lang.String	getHTMLPage() Get the html page for this request
Proxy	getProxy() Get Proxy for this statistic collector
static ProxyStatistics	getSingleton()
long	getStoppedTransactions() get stopped transaction count, this is a stop due to one of the HttpMessageProcessor rules denying the continuation of the exchange
long	getSuccessTransactions() get successful transaction count
java.lang.String	getTitle() get title of web pages returned
long	getTransactionCount() get transaction count
void	incrementTransactionCount(int status) increment transaction count
void	reset() reset all counters to init values
void	setProxy(Proxy p) Set Proxy object to query
void	setTitle(java.lang.String t) set title of web pages returned

Methods inherited from class java.lang.Object

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

Field Detail

SUCCESS

public static final int SUCCESS

See Also:

Constant Field Values

FAILURE

public static final int FAILURE

See Also:

Constant Field Values

STOPPED

public static final int STOPPED

See Also:

Constant Field Values

Method Detail

getSingleton

public static ProxyStatistics getSingleton()

reset

public void reset()

reset all counters to init values

setTitle

public void setTitle(java.lang.String t)

set title of web pages returned

getTitle

public java.lang.String getTitle()

get title of web pages returned

getSuccessTransactions

public long getSuccessTransactions()

get successful transaction count

getFailureTransactions

public long getFailureTransactions()

get failed transaction count

getStoppedTransactions

public long getStoppedTransactions()

get stopped transaction count, this is a stop due to one of the HttpMessageProcessor rules denying the continuation of the exchange

incrementTransactionCount

public void incrementTransactionCount(int status)
                               throws java.lang.IllegalArgumentException

increment transaction count

Throws:

java.lang.IllegalArgumentException

getTransactionCount

public long getTransactionCount()

get transaction count

addDuration

public void addDuration(double duration)

add a duration measurement to the collection of statistics

getDurationCnt

public double getDurationCnt()

getDurationMin

public double getDurationMin()

getDurationMax

public double getDurationMax()

getDurationAvg

public double getDurationAvg()

getDurationStdDev

public double getDurationStdDev()

Calculate Standard Deviation as the SQRT of variance based on the formula from:
WIKI Variance Calculation Page: Algorithm II

 double mean = getDurationAvg();
 double sum = 0.0;
 for( int i=0; i< durations.size(); i++ ) {
 double duration = durations.elementAt(i);
 sum += Math.pow(duration - mean, 2);
 }
 stdDevDuration = Math.sqrt( sum / (durations.size() -1) );
 

note: Future calculations of this may change based on the whims of man

setProxy

public void setProxy(Proxy p)

Set Proxy object to query

getProxy

public Proxy getProxy()

Get Proxy for this statistic collector

getHTMLPage

public java.lang.String getHTMLPage()

Get the html page for this request