com.h3c.util.perf.model

Class MetricsCache

java.lang.Object

com.h3c.util.perf.model.MetricsCache

All Implemented Interfaces:

PerfMetricsProvider

public class MetricsCache
extends Object
implements PerfMetricsProvider

An in-memory cache of performance metrics.

Method Summary

Methods

Modifier and Type	Method and Description
Perf	addPerfIfAbsent(String perfName) Add a new performance monitor if one has not existed, else return the existing one.
void	clearMetrics(String perfName) Clear all metrics for the given Perf's name.
void	clearPerfs() Clear all performance measurements.
Collection<Perf>	getAllPerfs() Get all Perf's.
Perf	getPerf(String perfName) Retrieve the Perf instance for the given name.
static PerfMetricsProvider	instance() Return a singleton instance.

Methods inherited from class java.lang.Object

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

Method Detail

instance

public static PerfMetricsProvider instance()

Return a singleton instance.

Returns:

singleton instance

getPerf

public Perf getPerf(String perfName)

Description copied from interface: PerfMetricsProvider

Retrieve the Perf instance for the given name.

Specified by:

getPerf in interface PerfMetricsProvider

Parameters:

perfName - name of Perf structure

Returns:

Perf instance

addPerfIfAbsent

public Perf addPerfIfAbsent(String perfName)

Description copied from interface: PerfMetricsProvider

Add a new performance monitor if one has not existed, else return the existing one.

Specified by:

addPerfIfAbsent in interface PerfMetricsProvider

Parameters:

perfName - performance monitor name

Returns:

Perf instance

getAllPerfs

public Collection<Perf> getAllPerfs()

Description copied from interface: PerfMetricsProvider

Get all Perf's.

Specified by:

getAllPerfs in interface PerfMetricsProvider

Returns:

all Perf's

clearMetrics

public void clearMetrics(String perfName)

Description copied from interface: PerfMetricsProvider

Clear all metrics for the given Perf's name.

Specified by:

clearMetrics in interface PerfMetricsProvider

Parameters:

perfName - name of Perf

clearPerfs

public void clearPerfs()

Description copied from interface: PerfMetricsProvider

Clear all performance measurements. Use with caution!

Specified by:

clearPerfs in interface PerfMetricsProvider