/*
* Copyright (c) 2012, Niclas Hedhman. All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
*
* You may obtain a copy of the License at
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.qi4j.library.metrics;
import java.lang.reflect.InvocationHandler;
import java.lang.reflect.Method;
import java.util.concurrent.TimeUnit;
import org.qi4j.api.common.Optional;
import org.qi4j.api.concern.ConcernOf;
import org.qi4j.api.injection.scope.Invocation;
import org.qi4j.api.injection.scope.Service;
import org.qi4j.api.metrics.MetricsProvider;
import org.qi4j.api.metrics.MetricsTimer;
import org.qi4j.api.metrics.MetricsTimerFactory;
public class TimingCaptureAllConcern extends ConcernOf<InvocationHandler>
implements InvocationHandler
{
private MetricsTimer timer;
public TimingCaptureAllConcern( @Service @Optional MetricsProvider metrics,
@Invocation Method method
)
{
if( metrics != null )
{
MetricsTimerFactory factory = metrics.createFactory( MetricsTimerFactory.class );
boolean annotated = method.getAnnotation( TimingCapture.class ) != null;
String captureNme = getMethodName( method ) + "() [" +( annotated ? "@" : "" ) + "TimingCapture" + "]";
Class<?> declaringClass = method.getDeclaringClass();
timer = factory.createTimer( declaringClass, captureNme, TimeUnit.MILLISECONDS, TimeUnit.SECONDS );
}
}
private String getMethodName( Method method )
{
return method.getName();
}
@Override
public Object invoke( Object proxy, Method method, Object[] args )
throws Throwable
{
MetricsTimer.Context timing = null;
if( timer != null )
{
timing = timer.start();
}
try
{
return next.invoke( proxy, method, args );
}
finally
{
if( timing != null )
{
timing.stop();
}
}
}
}