    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    @Override
    032    public void advise(MethodInvocation invocation)
    033    {
    034        boolean debug = methodLogger.isDebugEnabled();
    035
    036        if (!debug)
    037        {
    038            invocation.proceed();
    039            return;
    040        }
    041
    042        methodLogger.entry(invocation);
    043
    044        try
    045        {
    046            invocation.proceed();
    047        }
    048        catch (RuntimeException ex)
    049        {
    050            methodLogger.fail(invocation, ex);
    051
    052            throw ex;
    053        }
    054
    055        if (invocation.didThrowCheckedException())
    056        {
    057            Exception thrown = invocation.getCheckedException(Exception.class);
    058
    059            methodLogger.fail(invocation, thrown);
    060
    061            return;
    062        }
    063
    064        methodLogger.exit(invocation);
    065    }
    066}