Package de.digitalcollections.iiif.hymir.image.business

Class ImageMetrics

java.lang.Object

de.digitalcollections.iiif.hymir.image.business.ImageMetrics

@Component
public class ImageMetrics
extends Object

Small component to allow for convenient measurements of image data operations.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	ImageMetrics.ImageDataOp

Constructor Summary

Constructors

Constructor	Description
ImageMetrics(io.micrometer.core.instrument.MeterRegistry registry)

Method Summary

Modifier and Type	Method	Description
void	clearStaleTimers()	Clear out stale timers once in a while to prevent a memory leak from failed tasks that don't clean up after themselves.
void	clearTimer(int key)
void	endImageOp(int key, ImageMetrics.ImageDataOp op, int numPixels)
void	endImageOp(int key, ImageMetrics.ImageDataOp op, String format, int numPixels)	End measuring an image operation with some metadata.
int	startImageOp()	Start measuring an image operation.

Methods inherited from class java.lang.Object

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

Constructor Detail

ImageMetrics

public ImageMetrics(io.micrometer.core.instrument.MeterRegistry registry)

Method Detail

clearTimer

public void clearTimer(int key)

clearStaleTimers

@Scheduled(fixedRate=15L,
           timeUnit=MINUTES)
public void clearStaleTimers()

Clear out stale timers once in a while to prevent a memory leak from failed tasks that don't clean up after themselves.

startImageOp

public int startImageOp()

Start measuring an image operation.

Returns:

Key to stop the measurement with.

endImageOp

public void endImageOp(int key,
                       ImageMetrics.ImageDataOp op,
                       int numPixels)

endImageOp

public void endImageOp(int key,
                       ImageMetrics.ImageDataOp op,
                       String format,
                       int numPixels)

End measuring an image operation with some metadata.