org.trimou.engine.listener

Class SimpleStatsCollector

java.lang.Object

org.trimou.engine.config.AbstractConfigurationAware

org.trimou.engine.listener.AbstractMustacheListener

org.trimou.engine.listener.SimpleStatsCollector

All Implemented Interfaces:

ConfigurationAware, MustacheListener

public class SimpleStatsCollector
extends AbstractMustacheListener

A simple MustacheListener collecting template rendering statistics. Note that the template is identified with the name/id - so data will not be correct if there's more than one templates with the same name. It's possible to specify the time unit for measurements. By default TimeUnit.MILLISECONDS is used. It's also possible to specify a Predicate to filter out some templates. By default templates used for Lambda interpolation are skipped.

Author:

Martin Kouba

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
class	SimpleStatsCollector.SimpleStats

Field Summary

Fields

Modifier and Type	Field and Description
protected com.google.common.cache.LoadingCache<java.lang.String,com.google.common.cache.LoadingCache<java.lang.Long,java.util.concurrent.atomic.AtomicLong>>	data Data: name -> (time -> amount)
static com.google.common.base.Predicate<java.lang.String>	IS_NOT_ONEOFF_LAMBA_TEMPLATE Skip templates used for Lambda return value interpolation.
protected com.google.common.base.Predicate<java.lang.String>	templatePredicate
protected java.util.concurrent.TimeUnit	timeUnit

Constructor Summary

Constructors

Constructor and Description
SimpleStatsCollector()
SimpleStatsCollector(com.google.common.base.Predicate<java.lang.String> templatePredicate, java.util.concurrent.TimeUnit timeUnit)

Method Summary

Methods

Modifier and Type	Method and Description
void	clearData() Drop all the collected data.
java.util.Map<java.lang.String,java.util.Map<java.lang.Long,java.lang.Long>>	getData()
java.util.Map<java.lang.Long,java.lang.Long>	getData(java.lang.String templateId)
java.util.Set<SimpleStatsCollector.SimpleStats>	getSimpleStats()
SimpleStatsCollector.SimpleStats	getSimpleStats(java.lang.String templateId)
java.util.concurrent.TimeUnit	getTimeUnit()
void	renderingStarted(MustacheRenderingEvent event) Rendering of a Mustache is about to start.

Methods inherited from class org.trimou.engine.listener.AbstractMustacheListener

compilationFinished, parsingStarted, renderingFinished

Methods inherited from class org.trimou.engine.config.AbstractConfigurationAware

getConfigurationKeys, checkNotInitialized, init

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.trimou.engine.config.ConfigurationAware

getConfigurationKeys, init

Field Detail

IS_NOT_ONEOFF_LAMBA_TEMPLATE

public static final com.google.common.base.Predicate<java.lang.String> IS_NOT_ONEOFF_LAMBA_TEMPLATE

Skip templates used for Lambda return value interpolation.

See Also:

Lambda.ONEOFF_LAMBDA_TEMPLATE_PREFIX

timeUnit

protected final java.util.concurrent.TimeUnit timeUnit

templatePredicate

protected final com.google.common.base.Predicate<java.lang.String> templatePredicate

data

protected final com.google.common.cache.LoadingCache<java.lang.String,com.google.common.cache.LoadingCache<java.lang.Long,java.util.concurrent.atomic.AtomicLong>> data

Data: name -> (time -> amount)

Constructor Detail

SimpleStatsCollector

public SimpleStatsCollector()

SimpleStatsCollector

public SimpleStatsCollector(com.google.common.base.Predicate<java.lang.String> templatePredicate,
                    java.util.concurrent.TimeUnit timeUnit)

Parameters:

templatePredicate -

timeUnit -

Method Detail

renderingStarted

public void renderingStarted(MustacheRenderingEvent event)

Description copied from interface: MustacheListener

Rendering of a Mustache is about to start. Always use ReleaseCallbackContainer.registerReleaseCallback(ReleaseCallback) to release all the necessary resources.

Specified by:

renderingStarted in interface MustacheListener

Overrides:

renderingStarted in class AbstractMustacheListener

clearData

public void clearData()

Drop all the collected data.

getData

public java.util.Map<java.lang.Long,java.lang.Long> getData(java.lang.String templateId)

Parameters:

templateId -

Returns:

data for the given template

getData

public java.util.Map<java.lang.String,java.util.Map<java.lang.Long,java.lang.Long>> getData()

Returns:

all collected data

getSimpleStats

public SimpleStatsCollector.SimpleStats getSimpleStats(java.lang.String templateId)

Parameters:

templateId -

Returns:

a simple statistics for the given template

getSimpleStats

public java.util.Set<SimpleStatsCollector.SimpleStats> getSimpleStats()

Returns:

all available simple statistics

getTimeUnit

public java.util.concurrent.TimeUnit getTimeUnit()

Returns:

the time unit used for measurements