001    // Copyright 2011 The Apache Software Foundation
002    //
003    // Licensed under the Apache License, Version 2.0 (the "License");
004    // you may not use this file except in compliance with the License.
005    // You may obtain a copy of the License at
006    //
007    // http://www.apache.org/licenses/LICENSE-2.0
008    //
009    // Unless required by applicable law or agreed to in writing, software
010    // distributed under the License is distributed on an "AS IS" BASIS,
011    // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
012    // See the License for the specific language governing permissions and
013    // limitations under the License.
014    
015    package org.apache.tapestry5.ioc.internal.services;
016    
017    import org.apache.tapestry5.plastic.ClassType;
018    import org.apache.tapestry5.plastic.PlasticClassEvent;
019    import org.apache.tapestry5.plastic.PlasticClassListener;
020    import org.slf4j.Logger;
021    import org.slf4j.Marker;
022    import org.slf4j.MarkerFactory;
023    
024    public class PlasticClassListenerLogger implements PlasticClassListener
025    {
026        private final Logger logger;
027    
028        public PlasticClassListenerLogger(Logger logger)
029        {
030            this.logger = logger;
031        }
032    
033        public void classWillLoad(PlasticClassEvent event)
034        {
035            if (logger.isDebugEnabled())
036            {
037                Marker marker = MarkerFactory.getMarker(event.getPrimaryClassName());
038    
039                String extendedClassName = event.getType() == ClassType.PRIMARY ? event.getPrimaryClassName() : String
040                        .format("%s (%s for %s)", event.getClassName(), event.getType(), event.getPrimaryClassName());
041    
042                logger.debug(marker,
043                        String.format("Loading class %s:\n%s", extendedClassName, event.getDissasembledBytecode()));
044            }
045        }
046    }