org.jasig.cas.monitor

Class AbstractCacheMonitor

java.lang.Object

org.jasig.cas.monitor.AbstractNamedMonitor<CacheStatus>

org.jasig.cas.monitor.AbstractCacheMonitor

All Implemented Interfaces:

Monitor<CacheStatus>

public abstract class AbstractCacheMonitor
extends AbstractNamedMonitor<CacheStatus>

Abstract base class for monitors that observe cache storage systems.

Since:

3.5.1

Author:

Marvin S. Addison

Field Summary

Fields

Modifier and Type	Field and Description
static long	DEFAULT_EVICTION_THRESHOLD Default eviction threshold is 0.
static int	DEFAULT_WARN_FREE_THRESHOLD Default free capacity threshold is 10%.

Fields inherited from class org.jasig.cas.monitor.AbstractNamedMonitor

logger, name

Constructor Summary

Constructors

Constructor and Description
AbstractCacheMonitor()

Method Summary

Methods

Modifier and Type	Method and Description
protected abstract CacheStatistics[]	getStatistics()
CacheStatus	observe() Observes the monitored resource and reports the status.
void	setEvictionThreshold(long count) Sets the eviction threshold count above which an error is issued.
void	setWarnFreeThreshold(int percent) Sets the percent free capacity threshold below which a warning is issued.
protected StatusCode	status(CacheStatistics statistics) Computes the status code for a given set of cache statistics.

Methods inherited from class org.jasig.cas.monitor.AbstractNamedMonitor

getName, setName

Methods inherited from class java.lang.Object

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

Field Detail

DEFAULT_WARN_FREE_THRESHOLD

public static final int DEFAULT_WARN_FREE_THRESHOLD

Default free capacity threshold is 10%.

See Also:

Constant Field Values

DEFAULT_EVICTION_THRESHOLD

public static final long DEFAULT_EVICTION_THRESHOLD

Default eviction threshold is 0.

See Also:

Constant Field Values

Constructor Detail

AbstractCacheMonitor

public AbstractCacheMonitor()

Method Detail

setWarnFreeThreshold

public void setWarnFreeThreshold(int percent)

Sets the percent free capacity threshold below which a warning is issued.

Parameters:

percent - Warning threshold percent.

setEvictionThreshold

public void setEvictionThreshold(long count)

Sets the eviction threshold count above which an error is issued.

Parameters:

count - Threshold for number of cache evictions.

observe

public CacheStatus observe()

Description copied from interface: Monitor

Observes the monitored resource and reports the status.

Returns:

Status of monitored resource.

getStatistics

protected abstract CacheStatistics[] getStatistics()

status

protected StatusCode status(CacheStatistics statistics)

Computes the status code for a given set of cache statistics.

Parameters:

statistics - Cache statistics.

Returns:

StatusCode.WARN if eviction count is above threshold or if percent free space is below threshold, otherwise StatusCode.OK.