001// Copyright 2008, 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.ioc.internal.services;
016
017import org.apache.tapestry5.ioc.services.ExceptionTracker;
018import org.apache.tapestry5.plastic.MethodAdvice;
019import org.apache.tapestry5.plastic.MethodInvocation;
020import org.slf4j.Logger;
021
022public class LoggingAdvice implements MethodAdvice
023{
024    private final MethodLogger methodLogger;
025
026    public LoggingAdvice(Logger logger, ExceptionTracker exceptionTracker)
027    {
028        methodLogger = new MethodLogger(logger, exceptionTracker);
029    }
030
031    public void advise(MethodInvocation invocation)
032    {
033        boolean debug = methodLogger.isDebugEnabled();
034
035        if (!debug)
036        {
037            invocation.proceed();
038            return;
039        }
040
041        methodLogger.entry(invocation);
042
043        try
044        {
045            invocation.proceed();
046        }
047        catch (RuntimeException ex)
048        {
049            methodLogger.fail(invocation, ex);
050
051            throw ex;
052        }
053
054        if (invocation.didThrowCheckedException())
055        {
056            Exception thrown = invocation.getCheckedException(Exception.class);
057
058            methodLogger.fail(invocation, thrown);
059
060            return;
061        }
062
063        methodLogger.exit(invocation);
064    }
065}