Class ThreadLocalStatisticsCollector

java.lang.Object

org.dataloader.stats.ThreadLocalStatisticsCollector

All Implemented Interfaces:

StatisticsCollector

public class ThreadLocalStatisticsCollector
extends Object
implements StatisticsCollector

This can collect statistics per thread as well as in an overall sense. This allows you to snapshot stats for a web request say as well as all requests.

You will want to call resetThread() to clean up the thread local aspects of this object per request thread.

ThreadLocals have their place in the Java world but be careful on how you use them. If you don't clean them up on "request boundaries" then you WILL have misleading statistics.

See Also:

• StatisticsCollector

Field Summary

Fields

Modifier and Type	Field	Description
private static final ThreadLocal<SimpleStatisticsCollector>	collector
private final SimpleStatisticsCollector	overallCollector

Constructor Summary

Constructors

Constructor	Description
ThreadLocalStatisticsCollector()

Method Summary

Modifier and Type	Method	Description
Statistics	getOverallStatistics()	This returns the overall statistics, that is not per thread but for the life of this object
Statistics	getStatistics()	This returns the statistics for this thread.
long	incrementBatchLoadCountBy(long delta)	Deprecated.
<K> long	incrementBatchLoadCountBy(long delta, IncrementBatchLoadCountByStatisticsContext<K> context)	Called to increment the number of batch loads
long	incrementBatchLoadExceptionCount()	Deprecated.
<K> long	incrementBatchLoadExceptionCount(IncrementBatchLoadExceptionCountStatisticsContext<K> context)	Called to increment the number of batch loads exceptions
long	incrementCacheHitCount()	Deprecated.
<K> long	incrementCacheHitCount(IncrementCacheHitCountStatisticsContext<K> context)	Called to increment the number of cache hits
long	incrementLoadCount()	Deprecated.
<K> long	incrementLoadCount(IncrementLoadCountStatisticsContext<K> context)	Called to increment the number of loads
long	incrementLoadErrorCount()	Deprecated.
<K> long	incrementLoadErrorCount(IncrementLoadErrorCountStatisticsContext<K> context)	Called to increment the number of loads that resulted in an object deemed in error
ThreadLocalStatisticsCollector	resetThread()	Removes the underlying thread local value for this current thread.
String	toString()

Methods inherited from class Object

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

Field Details

collector

private static final ThreadLocal<SimpleStatisticsCollector> collector

overallCollector

private final SimpleStatisticsCollector overallCollector

Constructor Details

ThreadLocalStatisticsCollector

public ThreadLocalStatisticsCollector()

Method Details

resetThread

public ThreadLocalStatisticsCollector resetThread()

Removes the underlying thread local value for this current thread. This is a way to reset the thread local values for the current thread and start afresh

Returns:

this collector for fluent coding

incrementLoadCount

public <K> long incrementLoadCount(IncrementLoadCountStatisticsContext<K> context)

Description copied from interface: StatisticsCollector

Called to increment the number of loads

Specified by:

incrementLoadCount in interface StatisticsCollector

Type Parameters:

K - the class of the key in the data loader

Parameters:

context - the context containing metadata of the data loader invocation

Returns:

the current value after increment

incrementLoadCount

@Deprecated
public long incrementLoadCount()

Deprecated.

Description copied from interface: StatisticsCollector

Called to increment the number of loads

Specified by:

incrementLoadCount in interface StatisticsCollector

Returns:

the current value after increment

incrementLoadErrorCount

public <K> long incrementLoadErrorCount(IncrementLoadErrorCountStatisticsContext<K> context)

Description copied from interface: StatisticsCollector

Called to increment the number of loads that resulted in an object deemed in error

Specified by:

incrementLoadErrorCount in interface StatisticsCollector

Type Parameters:

K - the class of the key in the data loader

Parameters:

context - the context containing metadata of the data loader invocation

Returns:

the current value after increment

incrementLoadErrorCount

@Deprecated
public long incrementLoadErrorCount()

Deprecated.

Description copied from interface: StatisticsCollector

Called to increment the number of loads that resulted in an object deemed in error

Specified by:

incrementLoadErrorCount in interface StatisticsCollector

Returns:

the current value after increment

incrementBatchLoadCountBy

public <K> long incrementBatchLoadCountBy(long delta,
 IncrementBatchLoadCountByStatisticsContext<K> context)

Description copied from interface: StatisticsCollector

Called to increment the number of batch loads

Specified by:

incrementBatchLoadCountBy in interface StatisticsCollector

Type Parameters:

K - the class of the key in the data loader

Parameters:

delta - how much to add to the count

context - the context containing metadata of the data loader invocation

Returns:

the current value after increment

incrementBatchLoadCountBy

@Deprecated
public long incrementBatchLoadCountBy(long delta)

Deprecated.

Description copied from interface: StatisticsCollector

Called to increment the number of batch loads

Specified by:

incrementBatchLoadCountBy in interface StatisticsCollector

Parameters:

delta - how much to add to the count

Returns:

the current value after increment

incrementBatchLoadExceptionCount

public <K> long incrementBatchLoadExceptionCount(IncrementBatchLoadExceptionCountStatisticsContext<K> context)

Description copied from interface: StatisticsCollector

Called to increment the number of batch loads exceptions

Specified by:

incrementBatchLoadExceptionCount in interface StatisticsCollector

Type Parameters:

K - the class of the key in the data loader

Parameters:

context - the context containing metadata of the data loader invocation

Returns:

the current value after increment

incrementBatchLoadExceptionCount

@Deprecated
public long incrementBatchLoadExceptionCount()

Deprecated.

Description copied from interface: StatisticsCollector

Called to increment the number of batch loads exceptions

Specified by:

incrementBatchLoadExceptionCount in interface StatisticsCollector

Returns:

the current value after increment

incrementCacheHitCount

public <K> long incrementCacheHitCount(IncrementCacheHitCountStatisticsContext<K> context)

Description copied from interface: StatisticsCollector

Called to increment the number of cache hits

Specified by:

incrementCacheHitCount in interface StatisticsCollector

Type Parameters:

K - the class of the key in the data loader

Parameters:

context - the context containing metadata of the data loader invocation

Returns:

the current value after increment

incrementCacheHitCount

@Deprecated
public long incrementCacheHitCount()

Deprecated.

Description copied from interface: StatisticsCollector

Called to increment the number of cache hits

Specified by:

incrementCacheHitCount in interface StatisticsCollector

Returns:

the current value after increment

getStatistics

public Statistics getStatistics()

This returns the statistics for this thread.

Specified by:

getStatistics in interface StatisticsCollector

Returns:

this thread's statistics

getOverallStatistics

public Statistics getOverallStatistics()

This returns the overall statistics, that is not per thread but for the life of this object

Returns:

overall statistics

toString

public String toString()

Overrides:

toString in class Object