com.jamonapi
Class FactoryDisabled

java.lang.Object
  com.jamonapi.FactoryDisabled

All Implemented Interfaces:

MonitorFactoryInterface

public final class FactoryDisabled
extends java.lang.Object
implements MonitorFactoryInterface

Factory that returns null monitors when JAMon is disabled. Method are noops. Any methods that return Monitors return NullMonitors (noop monitors)

Field Summary

Fields inherited from interface com.jamonapi.MonitorFactoryInterface

VERSION

Constructor Summary

FactoryDisabled(MonitorFactoryInterface factoryEnabled)
Creates a new instance of FactoryDisabled

Method Summary

Monitor	add(MonKey key, double value) Used when you want to create your own key for the monitor.
Monitor	add(java.lang.String label, java.lang.String units, double value) Return a monitor with the given label and units.
void	disableTotalKeySizeTracking()
void	enableActivityTracking(boolean enable) This determines if activity tracking in ranges is enabled.
void	enableGlobalActive(boolean enable)
void	enableTotalKeySizeTracking() This will keep track of the total size of of the keys used to store the monitors which can be useful in keeping track of memory used by JAMon.
boolean	exists(MonKey key) Return true if the monitor associated with the passed in key exists
boolean	exists(java.lang.String label, java.lang.String units) Return true if the monitor associated with the passed in label and units exists
MonitorComposite	getComposite(java.lang.String units)
java.util.Map	getMap() Get the backing map that holds the the Monitors.
int	getMaxNumMonitors() Return the max number of configured of monitors.
Monitor	getMonitor() Returns a non-TimeMonitor that won't update the jamon factory.
Monitor	getMonitor(MonKey key) Get the monitor associated with the passed in key.
Monitor	getMonitor(java.lang.String label, java.lang.String units) Get the monitor with the passed in label, and units.
int	getNumRows() Get the number of monitors in this factory
java.lang.String[]	getRangeHeader() Return the header associated with range names
java.lang.Object[][]	getRangeNames() Retun an array of range names.
MonitorComposite	getRootMonitor() Get the root composite monitor that contains all monitors in this factory
Monitor	getTimeMonitor(MonKey key) Get the time monitor associated with the passed in key.
Monitor	getTimeMonitor(java.lang.String label) Get the time monitor associated with the passed in label.
long	getTotalKeySize()
java.lang.String	getVersion() Get JAMon's version.
boolean	isActivityTrackingEnabled()
boolean	isGlobalActiveEnabled()
boolean	isTotalKeySizeTrackingEnabled()
java.util.Iterator	iterator()
void	remove(MonKey key) Remove the monitor associated with the passed in key
void	remove(java.lang.String label, java.lang.String units) Remove the monitor associated with the passed in label and units
void	reset() Reset jamon stats for this factory.
void	setMap(java.util.Map map) Set the map that holds the monitors.
void	setMaxNumMonitors(int maxMonitors) Set the max number of monitors that can be tracked.
void	setRangeDefault(java.lang.String key, RangeHolder rangeHolder) Associate a Range mapping to any monitor that has a unit/key name that matches what is passed to key
Monitor	start() Returns a TimeMonitor that won't update the jamon factory.
Monitor	start(MonKey key) Start using the passed in key.
Monitor	start(java.lang.String label) Return a time monitor (the units are implied and are ms.
Monitor	startNano(MonKey key) Provide your own key to a nanosecond timer
Monitor	startNano(java.lang.String label) Create a timing monitor that uses nanosecond granularity (1,000,000 ns.=1 ms.)
Monitor	startPrimary(MonKey key) Start a monitor with the specified key and mark it as primary
Monitor	startPrimary(java.lang.String label) Start a time monitor and mark it as primary

Methods inherited from class java.lang.Object

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

Constructor Detail

FactoryDisabled

public FactoryDisabled(MonitorFactoryInterface factoryEnabled)

Creates a new instance of FactoryDisabled

Method Detail

add

public Monitor add(MonKey key,
                   double value)

Description copied from interface: MonitorFactoryInterface

Used when you want to create your own key for the monitor. This works similarly to a group by clause where the key is any columns used after the group by clause.

Specified by:

add in interface MonitorFactoryInterface

add

public Monitor add(java.lang.String label,
                   java.lang.String units,
                   double value)

Description copied from interface: MonitorFactoryInterface

Return a monitor with the given label and units. Note label has an effect on what range is used. If no range is associated with units then it will use the null range (i.e. no range) Sample Call: factory.add("com.fdsapi.MyException", "error", 1);

Specified by:

add in interface MonitorFactoryInterface

start

public Monitor start()

Description copied from interface: MonitorFactoryInterface

Returns a TimeMonitor that won't update the jamon factory.

Specified by:

start in interface MonitorFactoryInterface

start

public Monitor start(MonKey key)

Description copied from interface: MonitorFactoryInterface

Start using the passed in key. Note activity stats are incremented

Specified by:

start in interface MonitorFactoryInterface

start

public Monitor start(java.lang.String label)

Description copied from interface: MonitorFactoryInterface

Return a time monitor (the units are implied and are ms. Note activity stats are incremented

Specified by:

start in interface MonitorFactoryInterface

startNano

public Monitor startNano(java.lang.String label)

Description copied from interface: MonitorFactoryInterface

Create a timing monitor that uses nanosecond granularity (1,000,000 ns.=1 ms.)

Specified by:

startNano in interface MonitorFactoryInterface

startNano

public Monitor startNano(MonKey key)

Description copied from interface: MonitorFactoryInterface

Provide your own key to a nanosecond timer

Specified by:

startNano in interface MonitorFactoryInterface

startPrimary

public Monitor startPrimary(MonKey key)

Description copied from interface: MonitorFactoryInterface

Start a monitor with the specified key and mark it as primary

Specified by:

startPrimary in interface MonitorFactoryInterface

startPrimary

public Monitor startPrimary(java.lang.String label)

Description copied from interface: MonitorFactoryInterface

Start a time monitor and mark it as primary

Specified by:

startPrimary in interface MonitorFactoryInterface

getMonitor

public Monitor getMonitor(MonKey key)

Description copied from interface: MonitorFactoryInterface

Get the monitor associated with the passed in key. It will be created if it doesn't exist

Specified by:

getMonitor in interface MonitorFactoryInterface

getMonitor

public Monitor getMonitor(java.lang.String label,
                          java.lang.String units)

Description copied from interface: MonitorFactoryInterface

Get the monitor with the passed in label, and units. It will be created if it doesn't exist

Specified by:

getMonitor in interface MonitorFactoryInterface

getTimeMonitor

public Monitor getTimeMonitor(MonKey key)

Description copied from interface: MonitorFactoryInterface

Get the time monitor associated with the passed in key. It will be created if it doesn't exist. The units are in ms.

Specified by:

getTimeMonitor in interface MonitorFactoryInterface

getTimeMonitor

public Monitor getTimeMonitor(java.lang.String label)

Description copied from interface: MonitorFactoryInterface

Get the time monitor associated with the passed in label. It will be created if it doesn't exist. The units are in ms.

Specified by:

getTimeMonitor in interface MonitorFactoryInterface

remove

public void remove(MonKey key)

Description copied from interface: MonitorFactoryInterface

Remove the monitor associated with the passed in key

Specified by:

remove in interface MonitorFactoryInterface

remove

public void remove(java.lang.String label,
                   java.lang.String units)

Description copied from interface: MonitorFactoryInterface

Remove the monitor associated with the passed in label and units

Specified by:

remove in interface MonitorFactoryInterface

exists

public boolean exists(MonKey key)

Description copied from interface: MonitorFactoryInterface

Return true if the monitor associated with the passed in key exists

Specified by:

exists in interface MonitorFactoryInterface

exists

public boolean exists(java.lang.String label,
                      java.lang.String units)

Description copied from interface: MonitorFactoryInterface

Return true if the monitor associated with the passed in label and units exists

Specified by:

exists in interface MonitorFactoryInterface

getComposite

public MonitorComposite getComposite(java.lang.String units)

Specified by:

getComposite in interface MonitorFactoryInterface

getRootMonitor

public MonitorComposite getRootMonitor()

Description copied from interface: MonitorFactoryInterface

Get the root composite monitor that contains all monitors in this factory

Specified by:

getRootMonitor in interface MonitorFactoryInterface

getNumRows

public int getNumRows()

Description copied from interface: MonitorFactoryInterface

Get the number of monitors in this factory

Specified by:

getNumRows in interface MonitorFactoryInterface

getRangeHeader

public java.lang.String[] getRangeHeader()

Description copied from interface: MonitorFactoryInterface

Return the header associated with range names

Specified by:

getRangeHeader in interface MonitorFactoryInterface

getRangeNames

public java.lang.Object[][] getRangeNames()

Description copied from interface: MonitorFactoryInterface

Retun an array of range names. This is dynamic based on what was passed to setRangeDefault

Specified by:

getRangeNames in interface MonitorFactoryInterface

getVersion

public java.lang.String getVersion()

Description copied from interface: MonitorFactoryInterface

Get JAMon's version. Example: 2.0

Specified by:

getVersion in interface MonitorFactoryInterface

setMap

public void setMap(java.util.Map map)

Description copied from interface: MonitorFactoryInterface

Set the map that holds the monitors. This could be used to aid jamon performance by passing in a high performance Thread safe map such as open source projects and jdk 1.5 have

Specified by:

setMap in interface MonitorFactoryInterface

setRangeDefault

public void setRangeDefault(java.lang.String key,
                            RangeHolder rangeHolder)

Description copied from interface: MonitorFactoryInterface

Associate a Range mapping to any monitor that has a unit/key name that matches what is passed to key

Specified by:

setRangeDefault in interface MonitorFactoryInterface

reset

public void reset()

Description copied from interface: MonitorFactoryInterface

Reset jamon stats for this factory. Like recreating the factory

Specified by:

reset in interface MonitorFactoryInterface

enableGlobalActive

public void enableGlobalActive(boolean enable)

Specified by:

enableGlobalActive in interface MonitorFactoryInterface

isGlobalActiveEnabled

public boolean isGlobalActiveEnabled()

Specified by:

isGlobalActiveEnabled in interface MonitorFactoryInterface

getMonitor

public Monitor getMonitor()

Description copied from interface: MonitorFactoryInterface

Returns a non-TimeMonitor that won't update the jamon factory.

Specified by:

getMonitor in interface MonitorFactoryInterface

iterator

public java.util.Iterator iterator()

Specified by:

iterator in interface MonitorFactoryInterface

getMap

public java.util.Map getMap()

Description copied from interface: MonitorFactoryInterface

Get the backing map that holds the the Monitors. Keys=MonKeys, values=Monitor

Specified by:

getMap in interface MonitorFactoryInterface

enableActivityTracking

public void enableActivityTracking(boolean enable)

Description copied from interface: MonitorFactoryInterface

This determines if activity tracking in ranges is enabled. Activity tracking allows you to see how performance tracks to the number of activities (monitors) that are running. For example it can let you see how your web site scales by seeing how performance correlates when 10 simultaneous pages are being invoked, or 20, 30, 40, 50 etc. Disabling or enabling will affect current monitors as well as any others that are subsequently created. One problem at this point is that any in flight monitors can be disabled/enabled while they are in flight leading to results that may be off. For this reason it is best to enable/disable before any monitors have been created or when you know none are running. A future enhancement may be to delay this capability until no monitors are running. Note disabling global active turns off a subset of this capability.

Specified by:

enableActivityTracking in interface MonitorFactoryInterface

isActivityTrackingEnabled

public boolean isActivityTrackingEnabled()

Specified by:

isActivityTrackingEnabled in interface MonitorFactoryInterface

getMaxNumMonitors

public int getMaxNumMonitors()

Description copied from interface: MonitorFactoryInterface

Return the max number of configured of monitors.

Specified by:

getMaxNumMonitors in interface MonitorFactoryInterface

setMaxNumMonitors

public void setMaxNumMonitors(int maxMonitors)

Description copied from interface: MonitorFactoryInterface

Set the max number of monitors that can be tracked. The default is unlimited. When this value is set the number of jamon monitors is capped at this number and does not grow unbounded. Once this threshold has been reached any additional are not stored in the Map and no warning is given. If the threshold is set, but the monitors currently exceed this number the current monitors remain, however no new ones will be added.

Specified by:

setMaxNumMonitors in interface MonitorFactoryInterface

Parameters:

maxMonitors - If positive then this is the max number of monitors that can be stored. 0 or negative means monitors can grow unbounded.

enableTotalKeySizeTracking

public void enableTotalKeySizeTracking()

Description copied from interface: MonitorFactoryInterface

This will keep track of the total size of of the keys used to store the monitors which can be useful in keeping track of memory used by JAMon. To have accureate measurements enableTotalKeySizeTracking() must be called before any monitors are stored.

Specified by:

enableTotalKeySizeTracking in interface MonitorFactoryInterface

disableTotalKeySizeTracking

public void disableTotalKeySizeTracking()

Specified by:

disableTotalKeySizeTracking in interface MonitorFactoryInterface

getTotalKeySize

public long getTotalKeySize()

Specified by:

getTotalKeySize in interface MonitorFactoryInterface

isTotalKeySizeTrackingEnabled

public boolean isTotalKeySizeTrackingEnabled()

Specified by:

isTotalKeySizeTrackingEnabled in interface MonitorFactoryInterface