001    /*
002     * Licensed to the Apache Software Foundation (ASF) under one or more
003     * contributor license agreements.  See the NOTICE file distributed with
004     * this work for additional information regarding copyright ownership.
005     * The ASF licenses this file to You under the Apache License, Version 2.0
006     * (the "License"); you may not use this file except in compliance with
007     * the License.  You may obtain a copy of the License at
008     *
009     *      http://www.apache.org/licenses/LICENSE-2.0
010     *
011     * Unless required by applicable law or agreed to in writing, software
012     * distributed under the License is distributed on an "AS IS" BASIS,
013     * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014     * See the License for the specific language governing permissions and
015     * limitations under the License.
016     */
017    
018    package org.apache.commons.proxy.interceptor.logging;
019    
020    import java.lang.reflect.Method;
021    import java.util.logging.Level;
022    import java.util.logging.Logger;
023    
024    /**
025     * An interceptor which logs method invocations using a {@link Logger JDK logger} using the "finer" logging level.
026     * 
027     * @auothor James Carman
028     * @since 1.1
029     */
030    public class JdkLoggingInterceptor extends AbstractLoggingInterceptor
031    {
032    //**********************************************************************************************************************
033    // Fields
034    //**********************************************************************************************************************
035    
036        private final String loggerName;
037    
038    //**********************************************************************************************************************
039    // Constructors
040    //**********************************************************************************************************************
041    
042        public JdkLoggingInterceptor( Class clazz )
043        {
044            this(clazz.getName());
045        }
046    
047        public JdkLoggingInterceptor( String loggerName )
048        {
049            this.loggerName = loggerName;
050        }
051    
052    //**********************************************************************************************************************
053    // Other Methods
054    //**********************************************************************************************************************
055    
056        private Logger getLogger()
057        {
058            return Logger.getLogger(loggerName);
059        }
060    
061        protected void entering( Method method, Object[] args )
062        {
063            getLogger().entering(method.getDeclaringClass().getName(), method.getName(), args);
064        }
065    
066        protected void exiting( Method method, Object result )
067        {
068            getLogger().exiting(method.getDeclaringClass().getName(), method.getName(), result);
069        }
070    
071        protected boolean isLoggingEnabled()
072        {
073            return getLogger().isLoggable(Level.FINER);
074        }
075    
076        protected void logMessage( String message )
077        {
078            // Do nothing!
079        }
080    
081        protected void logMessage( String message, Throwable t )
082        {
083            // Do nothing!
084        }
085    
086        protected void throwing( Method method, Throwable t )
087        {
088            getLogger().throwing(method.getDeclaringClass().getName(), method.getName(), t);
089        }
090    }