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
015package org.apache.tapestry5.beanmodel.internal.services;
016
017import org.apache.tapestry5.plastic.ClassType;
018import org.apache.tapestry5.plastic.PlasticClassEvent;
019import org.apache.tapestry5.plastic.PlasticClassListener;
020import org.slf4j.Logger;
021import org.slf4j.Marker;
022import org.slf4j.MarkerFactory;
023
024public class PlasticClassListenerLogger implements PlasticClassListener
025{
026    private final Logger logger;
027
028    public PlasticClassListenerLogger(Logger logger)
029    {
030        this.logger = logger;
031    }
032
033    @Override
034    public void classWillLoad(PlasticClassEvent event)
035    {
036        if (logger.isDebugEnabled())
037        {
038            Marker marker = MarkerFactory.getMarker(event.getPrimaryClassName());
039
040            String extendedClassName = event.getType() == ClassType.PRIMARY ? event.getPrimaryClassName() : String
041                    .format("%s (%s for %s)", event.getClassName(), event.getType(), event.getPrimaryClassName());
042
043            logger.debug(marker,
044                    String.format("Loading class %s:\n%s", extendedClassName, event.getDissasembledBytecode()));
045        }
046    }
047}