org.javasimon.callback

Class CompositeFilterCallback

java.lang.Object

org.javasimon.callback.CompositeFilterCallback

All Implemented Interfaces:

Callback, CompositeCallback, FilterCallback

public final class CompositeFilterCallback
extends Object
implements FilterCallback, CompositeCallback

This callback combines Composite and Filter behavior. Filter can be configured via addRule(FilterRule.Type, String, String, Callback.Event...) method and if the rule is satisfied the event is propagated to all children callbacks added via addCallback(Callback). XML facility for configuration is provided via ManagerConfiguration.readConfig(java.io.Reader).

Filter without any rules does not propagate events (default DENY behavior). Any number of global rules (for Callback.Event.ALL) and per event rules can be added. Event rules have higher priority and if the filter passes on event rules, global rules are not consulted. Rules are checked in the order they were added to the filter.

Author:

Richard "Virgo" Richter

See Also:

FilterRule

Nested Class Summary

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

Callback.Event

Constructor Summary

Constructors

Constructor and Description
CompositeFilterCallback() Constructs composite filter callback.

Method Summary

Modifier and Type	Method and Description
void	addCallback(Callback callback) Adds another callback as a child to this callback.
void	addRule(FilterRule.Type type, String condition, String pattern, Callback.Event... events) Adds the rule to the filter.
List<Callback>	callbacks() Returns the list of all child-callbacks.
void	cleanup() Lifecycle method called when the callback is removed from the manager.
void	initialize(Manager manager) Lifecycle method called when the callback is added to a manager.
void	onCounterDecrease(Counter counter, long dec, CounterSample sample) Counter decrease event.
void	onCounterIncrease(Counter counter, long inc, CounterSample sample) Counter increase event.
void	onCounterSet(Counter counter, long val, CounterSample sample) Counter set event.
void	onManagerClear() Event called when the manager is cleared.
void	onManagerMessage(String message) Message event is used to propagate arbitrary messages from the manager, or it can be used by the other Callback methods internally.
void	onManagerWarning(String warning, Exception cause) Warning event containing warning and/or cause.
void	onSimonCreated(Simon simon) Simon created event is called when Simon is successfully created by the Manager.
void	onSimonDestroyed(Simon simon) Simon destroyed event is called when Simon is successfully destroyed by the Manager.
void	onStopwatchAdd(Stopwatch stopwatch, Split split, StopwatchSample sample) Stopwatch add split event.
void	onStopwatchStart(Split split) Stopwatch start event.
void	onStopwatchStop(Split split, StopwatchSample sample) Stopwatch stop event.
void	removeAllCallbacks() Removes all callbacks from this callback.
void	removeCallback(Callback callback) Removes specified callback from this callback.

Methods inherited from class java.lang.Object

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

Constructor Detail

CompositeFilterCallback

public CompositeFilterCallback()

Constructs composite filter callback.

Method Detail

callbacks

public List<Callback> callbacks()

Description copied from interface: CompositeCallback

Returns the list of all child-callbacks.

Specified by:

callbacks in interface CompositeCallback

Returns:

children list

addCallback

public void addCallback(Callback callback)

Description copied from interface: CompositeCallback

Adds another callback as a child to this callback.

Specified by:

addCallback in interface CompositeCallback

Parameters:

callback - added callback

removeCallback

public void removeCallback(Callback callback)

Description copied from interface: CompositeCallback

Removes specified callback from this callback.

Specified by:

removeCallback in interface CompositeCallback

Parameters:

callback - removed child-callback

removeAllCallbacks

public void removeAllCallbacks()

Description copied from interface: CompositeCallback

Removes all callbacks from this callback.

Specified by:

removeAllCallbacks in interface CompositeCallback

initialize

public void initialize(Manager manager)

Description copied from interface: Callback

Lifecycle method called when the callback is added to a manager.

Specified by:

initialize in interface Callback

cleanup

public void cleanup()

Description copied from interface: Callback

Lifecycle method called when the callback is removed from the manager. It should implement any necessary cleanup or resources - e.g. release JDBC connection if one was used for Callback functionality.

It is important to realize that this method is not guaranteed to be called for all callbacks, only for callbacks removed from Manager's callback tree.

Specified by:

cleanup in interface Callback

onStopwatchAdd

public void onStopwatchAdd(Stopwatch stopwatch,
                           Split split,
                           StopwatchSample sample)

Description copied from interface: Callback

Stopwatch add split event. StopwatchSample valid for the moment after the add is provided because the callback is executed out of synchronized block. It is guaranteed that Split.getStopwatch() will not return null.

Specified by:

onStopwatchAdd in interface Callback

Parameters:

stopwatch - modified Stopwatch

split - added split object

sample - stopwatch sampled after the add

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

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

Parameters:

split - stopped Split

sample - stopwatch sampled after the stop

onCounterDecrease

public void onCounterDecrease(Counter counter,
                              long dec,
                              CounterSample sample)

Description copied from interface: Callback

Counter decrease event. CounterSample valid for the moment after the operation is provided because the callback is executed out of synchronized block.

Specified by:

onCounterDecrease in interface Callback

Parameters:

counter - modified Counter

dec - decrement amount

sample - counter sampled after the operation

onCounterIncrease

public void onCounterIncrease(Counter counter,
                              long inc,
                              CounterSample sample)

Description copied from interface: Callback

Counter increase event. CounterSample valid for the moment after the operation is provided because the callback is executed out of synchronized block.

Specified by:

onCounterIncrease in interface Callback

Parameters:

counter - modified Counter

inc - increment amount

sample - counter sampled after the operation

onCounterSet

public void onCounterSet(Counter counter,
                         long val,
                         CounterSample sample)

Description copied from interface: Callback

Counter set event. CounterSample valid for the moment after the operation is provided because the callback is executed out of synchronized block.

Specified by:

onCounterSet in interface Callback

Parameters:

counter - modified Counter

val - new value

sample - counter sampled after the operation

onSimonCreated

public void onSimonCreated(Simon simon)

Description copied from interface: Callback

Simon created event is called when Simon is successfully created by the Manager. Runs within the block synchronized on the Manager - this results in high consistency, but it also means that implementations of this method should not take much time.

Specified by:

onSimonCreated in interface Callback

Parameters:

simon - created Simon

onSimonDestroyed

public void onSimonDestroyed(Simon simon)

Description copied from interface: Callback

Simon destroyed event is called when Simon is successfully destroyed by the Manager. Runs within the block synchronized on the Manager - this results in high consistency, but it also means that implementations of this method should not take much time.

Specified by:

onSimonDestroyed in interface Callback

Parameters:

simon - destroyed Simon

onManagerClear

public void onManagerClear()

Description copied from interface: Callback

Event called when the manager is cleared. Runs within the block synchronized on the Manager - this results in high consistency, but it also means that implementations of this method should not take much time.

Specified by:

onManagerClear in interface Callback

onManagerMessage

public void onManagerMessage(String message)

Description copied from interface: Callback

Message event is used to propagate arbitrary messages from the manager, or it can be used by the other Callback methods internally.

Specified by:

onManagerMessage in interface Callback

Parameters:

message - message text

onManagerWarning

public void onManagerWarning(String warning,
                             Exception cause)

Description copied from interface: Callback

Warning event containing warning and/or cause.

Specified by:

onManagerWarning in interface Callback

Parameters:

warning - arbitrary warning message - can be null, unless concrete implementation states otherwise

cause - exception causing this warning - can be null, unless concrete implementation states otherwise

addRule

public void addRule(FilterRule.Type type,
                    String condition,
                    String pattern,
                    Callback.Event... events)

Description copied from interface: FilterCallback

Adds the rule to the filter.

Specified by:

addRule in interface FilterCallback

Parameters:

type - rule type (must, suffice, must-not)

condition - further conditions of the rule

pattern - Simon pattern

events - event list (empty applies to all, can be omitted)