org.opennms.core.profiler

Class ProfilerAspect

java.lang.Object

org.opennms.core.profiler.ProfilerAspect

public class ProfilerAspect
extends Object

Aspect to measure the execution time of methods. Simply annotate the class or method to measure with Profile. In order to get this to work, a bean of type ProfilerAspect must be in the current Spring Application Context and AOP must be enabled, e.g. .

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static interface	ProfilerAspect.Block<T>

Constructor Summary

Constructors

Constructor and Description
ProfilerAspect()

Method Summary

Modifier and Type	Method and Description
static String	humanReadable(long milliseconds) Converts the input milliseconds in a human readable format (e.g.
Object	logAroundByMethod(org.aspectj.lang.ProceedingJoinPoint joinPoint, Profile profile)
static <T> T	wrapProfile(Class<?> clazz, String signature, ProfilerAspect.Block<T> block) Sometimes adding an annotation may not work, e.g.

Methods inherited from class java.lang.Object

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

Constructor Detail

ProfilerAspect

public ProfilerAspect()

Method Detail

logAroundByMethod

public Object logAroundByMethod(org.aspectj.lang.ProceedingJoinPoint joinPoint,
                                Profile profile)
                         throws Throwable

Throws:

Throwable

wrapProfile

public static <T> T wrapProfile(Class<?> clazz,
                                String signature,
                                ProfilerAspect.Block<T> block)

Sometimes adding an annotation may not work, e.g. the class is not managed by spring. This method allows to wrap any statements to be measured, by simply wrap it into a ProfilerAspect.Block object

Returns:

the return of the block. If no return is required, simply return null.

humanReadable

public static String humanReadable(long milliseconds)

Converts the input milliseconds in a human readable format (e.g. 1s 100ms)

Parameters:

milliseconds - The ms to convert

Returns:

The human readable format, e.g. 2h 15m 3s 150ms