com.endeca.infront.perf.stats

Class StatsCollectionHandler

java.lang.Object

com.endeca.infront.perf.stats.StatsCollectionHandler

All Implemented Interfaces:

EventHandler

public class StatsCollectionHandler
extends Object
implements EventHandler

EventHandler which collects performance statistics about the Assembler and its components.

Constructor Summary

Constructors

Constructor and Description
StatsCollectionHandler()

Method Summary

Methods

Modifier and Type	Method and Description
void	failed(Event event, Map<String,Object> properties) Used to indicate to the handler that a particular event has finished with an error.
String	getErrorTopic()
StatsMap	getStats() Returns a map from event topics to timing statistics for that topic.
void	reset() Clears the collected statistics
void	started(Event event, Map<String,Object> properties) Used to indicate to the handler that a particular event has started.
void	succeeded(Event event, Map<String,Object> properties) Used to indicate to the handler that a particular event has finished successfully.

Methods inherited from class java.lang.Object

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

Constructor Detail

StatsCollectionHandler

public StatsCollectionHandler()

Method Detail

getErrorTopic

public String getErrorTopic()

Returns:

The topic of an event that might be associated with an error if one has occurred, null otherwise

started

public void started(Event event,
           Map<String,Object> properties)

Description copied from interface: EventHandler

Used to indicate to the handler that a particular event has started.

Specified by:

started in interface EventHandler

Parameters:

event - The event

properties - Any properties associated with the start of the event

succeeded

public void succeeded(Event event,
             Map<String,Object> properties)

Description copied from interface: EventHandler

Used to indicate to the handler that a particular event has finished successfully.

Specified by:

succeeded in interface EventHandler

Parameters:

event - The event

properties - Any properties associated with the successful completion of the event

failed

public void failed(Event event,
          Map<String,Object> properties)

Description copied from interface: EventHandler

Used to indicate to the handler that a particular event has finished with an error.

Specified by:

failed in interface EventHandler

Parameters:

event - The event

properties - Any properties associated with the failure of the event

getStats

public StatsMap getStats()

Returns a map from event topics to timing statistics for that topic. Note that, although the results are thread-safe, they are backed by the internal data structures of the StatsCollectionHandler and may thus change while being processed.

reset

public void reset()

Clears the collected statistics