org.javasimon.callback.calltree

Class CallTreeCallback

java.lang.Object

org.javasimon.callback.CallbackSkeleton

org.javasimon.callback.calltree.CallTreeCallback

All Implemented Interfaces:

Callback

public class CallTreeCallback
extends CallbackSkeleton

Callback which logs the call tree when the main call is bigger than specified threshold. This callback can give good results only if interceptors/filters have been placed a different level of the application (web/business/data tiers for instance).

Call tree looks like this:

 org.javasimon.web.Controller.execute 123ms
        org.javasimon.business.FirstService.work 75ms, 75%
                org.javasimon.data.FirstDAO.findAll 50 ms, 82%
                org.javasimon.data.SecondDAO.findByRelation 20ms, 10%, 3
        org.javasimon.business.SecondService.do 10ms, 5%
 

Since:

3.2

Author:

gquintana

See Also:

CallTree

Nested Class Summary

Nested classes/interfaces inherited from interface org.javasimon.callback.Callback

Callback.Event

Field Summary

Fields

Modifier and Type	Field and Description
static String	ATTR_NAME_LAST Simon attribute name used to store last significant call tree.

Constructor Summary

Constructors

Constructor and Description
CallTreeCallback() Default constructor.
CallTreeCallback(LogTemplate<Split> callTreeLogTemplate) Constructor with log template.
CallTreeCallback(long threshold) Constructor with logging duration threshold.

Method Summary

Modifier and Type	Method and Description
static CallTree	getLastCallTree(Stopwatch stopwatch) Returns last call tree stored in stopwatch attributes.
Long	getLogThreshold() Returns log threshold when callTreeLogTemplate is a SplitThresholdLogTemplate.
void	onRootStopwatchStop(CallTree callTree, Split split) When stopwatch corresponding to root tree node is stopped, this method is called.
void	onStopwatchStart(Split split) Stopwatch start event.
void	onStopwatchStop(Split split, StopwatchSample sample) Stopwatch stop event.
void	setLogThreshold(Long logThreshold) Sets log threshold.

Methods inherited from class org.javasimon.callback.CallbackSkeleton

cleanup, initialize, onCounterDecrease, onCounterIncrease, onCounterSet, onManagerClear, onManagerMessage, onManagerWarning, onSimonCreated, onSimonDestroyed, onStopwatchAdd

Methods inherited from class java.lang.Object

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

Field Detail

ATTR_NAME_LAST

public static final String ATTR_NAME_LAST

Simon attribute name used to store last significant call tree.

See Also:

Constant Field Values

Constructor Detail

CallTreeCallback

public CallTreeCallback()

Default constructor.

CallTreeCallback

public CallTreeCallback(long threshold)

Constructor with logging duration threshold.

Parameters:

threshold - Threshold

CallTreeCallback

public CallTreeCallback(LogTemplate<Split> callTreeLogTemplate)

Constructor with log template.

Parameters:

callTreeLogTemplate - Log template

Method Detail

getLogThreshold

public Long getLogThreshold()

Returns log threshold when callTreeLogTemplate is a SplitThresholdLogTemplate.

setLogThreshold

public void setLogThreshold(Long logThreshold)

Sets log threshold. Configure callTreeLogTemplate with a SplitThresholdLogTemplate.

onStopwatchStart

public void onStopwatchStart(Split split)

Description copied from interface: Callback

Stopwatch start event. Duration of all callbacks is included into the split time! StopwatchSample valid for the moment after the start is provided because the callback is executed out of synchronized block. It is guaranteed that Split.getStopwatch() will not return null.

Specified by:

onStopwatchStart in interface Callback

Overrides:

onStopwatchStart in class CallbackSkeleton

Parameters:

split - started Split

onStopwatchStop

public void onStopwatchStop(Split split,
                            StopwatchSample sample)

Description copied from interface: Callback

Stopwatch stop event. This action is executed after the split time is calculated and does not affect the measuring. StopwatchSample valid for the moment after the stop is provided because the callback is executed out of synchronized block. It is guaranteed that Split.getStopwatch() will not return null.

Specified by:

onStopwatchStop in interface Callback

Overrides:

onStopwatchStop in class CallbackSkeleton

Parameters:

split - stopped Split

sample - stopwatch sampled after the stop

onRootStopwatchStop

public void onRootStopwatchStop(CallTree callTree,
                                Split split)

When stopwatch corresponding to root tree node is stopped, this method is called. Logs call tree when split is longer than threshold.

Parameters:

callTree - call tree to log

split - stopped split

getLastCallTree

public static CallTree getLastCallTree(Stopwatch stopwatch)

Returns last call tree stored in stopwatch attributes.

Parameters:

stopwatch - Stopwatch

Returns:

Last call tree or null if any