net.sf.infrared.agent
Class StatisticsMgr

java.lang.Object
  net.sf.infrared.agent.StatisticsMgr

public class StatisticsMgr

extends Object

This class is responsible for managing the global statistics Incremental statistics updates are merged with the global instance StatisticsMgr ensures that there is a single Statistics object for each application instance. This statistics object represents the performance data for that application instance.

Field Summary

static String

ALL_VALUE

Constructor Summary

StatisticsMgr()

Method Summary

static Set	getListOfApplications() Return the list of application names for which the statistics is available
static Set	getListOfInstances(Set applicationNames) Return the list of instances of a set of applications for which the statistics is available.
static Set	getListOfInstances(String applicationName) Return the list of instances of an application for which the statistics is available.
static PerformanceDataSnapShot	getPerformanceData() Copy the statistics data and return a snap shot.
static PerformanceDataSnapShot	getPerformanceData(Set applicationNames, Set instanceNames) Merges statistics for a set of applications & instances
static PerformanceDataSnapShot	getPerformanceData(String applicationName, String instanceName) Retrieve Snap shot for a given application instance.
static void	merge(Statistics stats) Merge statistics of one request with the global statistics
static List	reset() Reset the statistics and return the snap shot of the current state
static List	reset(Set applications, Set instances)
static PerformanceDataSnapShot	reset(String applicationName, String instanceName)

Methods inherited from class java.lang.Object

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

Field Detail

ALL_VALUE

public static final String ALL_VALUE

See Also:

Constant Field Values

Constructor Detail

StatisticsMgr

public StatisticsMgr()

Method Detail

getPerformanceData

public static PerformanceDataSnapShot getPerformanceData()

Copy the statistics data and return a snap shot.

Returns:

getPerformanceData

public static PerformanceDataSnapShot getPerformanceData(String applicationName,
                                                         String instanceName)

Retrieve Snap shot for a given application instance. If either the application name is or the instance name is the matching statistics objects are merged

Parameters:

applicationName -

instanceName -

Returns:

getPerformanceData

public static PerformanceDataSnapShot getPerformanceData(Set applicationNames,
                                                         Set instanceNames)

Merges statistics for a set of applications & instances

Parameters:

applicationNames -

instanceNames -

Returns:

reset

public static List reset()

Reset the statistics and return the snap shot of the current state

Returns:

reset

public static List reset(Set applications,
                         Set instances)

reset

public static PerformanceDataSnapShot reset(String applicationName,
                                            String instanceName)

merge

public static void merge(Statistics stats)

Merge statistics of one request with the global statistics

Parameters:

stats -

getListOfApplications

public static Set getListOfApplications()

Return the list of application names for which the statistics is available

Returns:

getListOfInstances

public static Set getListOfInstances(String applicationName)

Return the list of instances of an application for which the statistics is available.

Parameters:

applicationName -

Returns:

getListOfInstances

public static Set getListOfInstances(Set applicationNames)

Return the list of instances of a set of applications for which the statistics is available.

Parameters:

applicationNames -

Returns: