| /* |
| * Copyright 2006 Niclas Hedhman. |
| * |
| * 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.apache.zest.library.logging.trace; |
| |
| import java.lang.reflect.InvocationHandler; |
| import java.lang.reflect.Method; |
| import org.apache.zest.api.Qi4j; |
| import org.apache.zest.api.common.Optional; |
| import org.apache.zest.api.composite.Composite; |
| import org.apache.zest.api.concern.ConcernOf; |
| import org.apache.zest.api.injection.scope.Service; |
| import org.apache.zest.api.injection.scope.Structure; |
| import org.apache.zest.library.logging.trace.service.TraceService; |
| |
| |
| public abstract class AbstractTraceConcern extends ConcernOf<InvocationHandler> |
| implements InvocationHandler |
| { |
| @Structure private Qi4j api; |
| @Optional @Service protected TraceService traceService; |
| private Composite thisComposite; |
| private Class compositeType; |
| |
| public AbstractTraceConcern( Composite thisComposite ) |
| { |
| this.thisComposite = thisComposite; |
| compositeType = thisComposite.getClass().getInterfaces()[ 0 ]; |
| } |
| |
| @Override |
| public Object invoke( Object proxy, Method method, Object[] args ) |
| throws Throwable |
| { |
| boolean doTrace = traceService != null && doTrace(); |
| Object result; |
| long entryTime = 0; |
| long timeStamp = 0; |
| try |
| { |
| if( doTrace ) |
| { |
| entryTime = System.currentTimeMillis(); |
| timeStamp = System.nanoTime(); |
| } |
| result = next.invoke( proxy, method, args ); |
| if( doTrace ) |
| { |
| long duration = System.nanoTime() - timeStamp; |
| traceService.traceSuccess( compositeType, api.dereference( thisComposite ), method, args, result, entryTime, duration ); |
| } |
| } |
| catch( Throwable t ) |
| { |
| if( doTrace ) |
| { |
| long duration = System.nanoTime() - timeStamp; |
| Composite object = api.dereference( thisComposite ); |
| traceService.traceException( compositeType, object, method, args, t, entryTime, duration ); |
| } |
| throw t; |
| } |
| return result; |
| } |
| |
| protected boolean doTrace() |
| { |
| return true; |
| } |
| } |