pt.digitalis.iss
Class PerformanceLogger

java.lang.Object
  pt.digitalis.iss.PerformanceLogger

public final class PerformanceLogger
extends Object

This entity logs the performance information of the ISS.
It collects the performance data from the ISS and sends the data to a LogWrapper.

Author:

Rodrigo Gonçalves rgoncalves@digitalis.pt

Constructor Summary

PerformanceLogger(pt.digitalis.log.ILogWrapper logger)
Constructor.

Method Summary

void

logPerformanceInformation(int previousAsynchronousThreshold, int currentAsynchronousThreshold, int minAsynchronousThreshold, int maxAsynchronousThreshold, int numberOfSynchronousServiceRequests, int numberOfAsynchronousWorkers, int queueSize, long meanExecutionTime, long minExecutionTime, long maxExecutionTime) Logs the passed performance information.

Methods inherited from class java.lang.Object

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

Constructor Detail

PerformanceLogger

public PerformanceLogger(pt.digitalis.log.ILogWrapper logger)

Constructor. Sets the the log level as info and configures the time zone.

Parameters:

logger - the logger instance

Method Detail

logPerformanceInformation

public void logPerformanceInformation(int previousAsynchronousThreshold,
                                      int currentAsynchronousThreshold,
                                      int minAsynchronousThreshold,
                                      int maxAsynchronousThreshold,
                                      int numberOfSynchronousServiceRequests,
                                      int numberOfAsynchronousWorkers,
                                      int queueSize,
                                      long meanExecutionTime,
                                      long minExecutionTime,
                                      long maxExecutionTime)

Logs the passed performance information.
Gets the current timestamp from the OS, composes a message with the passed performance information and sends the message to the logger.

Parameters:

previousAsynchronousThreshold - the previous asynchronicity threshold value

currentAsynchronousThreshold - the current asynchronicity threshold value

minAsynchronousThreshold - the minimum asynchronicity threshold value defined

maxAsynchronousThreshold - the maximum asynchronicity threshold value defined

numberOfSynchronousServiceRequests - the number of requests being served synchronously

numberOfAsynchronousWorkers - the number of workers handling asynchronous requests

queueSize - the number of processes waiting on the queue

meanExecutionTime - the current expected time for a request to be served

minExecutionTime - the minimum defined service time

maxExecutionTime - the maximum defined service time