/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
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package org.apache.juli;

import java.util.logging.Formatter;
import java.util.logging.LogRecord;

A more compact formatter. Equivalent log4j config:
 log4j.rootCategory=WARN, A1
 log4j.appender.A1=org.apache.log4j.ConsoleAppender
 log4j.appender.A1.layout=org.apache.log4j.PatternLayout
 log4j.appender.A1.Target=System.err
 log4j.appender.A1.layout.ConversionPattern=%r %-15.15c{2} %-1.1p %m %n
 
Example: 1130122891846 Http11BaseProtocol I Initializing Coyote HTTP/1.1 on http-8800
Author:Costin Manolache
/** * A more compact formatter. * * Equivalent log4j config: * <pre> * log4j.rootCategory=WARN, A1 * log4j.appender.A1=org.apache.log4j.ConsoleAppender * log4j.appender.A1.layout=org.apache.log4j.PatternLayout * log4j.appender.A1.Target=System.err * log4j.appender.A1.layout.ConversionPattern=%r %-15.15c{2} %-1.1p %m %n * </pre> * * Example: * 1130122891846 Http11BaseProtocol I Initializing Coyote HTTP/1.1 on http-8800 * * * @author Costin Manolache */
public class JdkLoggerFormatter extends Formatter { // values from JDK Level public static final int LOG_LEVEL_TRACE = 400; public static final int LOG_LEVEL_DEBUG = 500; public static final int LOG_LEVEL_INFO = 800; public static final int LOG_LEVEL_WARN = 900; public static final int LOG_LEVEL_ERROR = 1000; public static final int LOG_LEVEL_FATAL = 1000; @Override public String format(LogRecord record) { Throwable t=record.getThrown(); int level=record.getLevel().intValue(); String name=record.getLoggerName(); long time=record.getMillis(); String message=formatMessage(record); if( name.indexOf('.') >= 0 ) name = name.substring(name.lastIndexOf('.') + 1); // Use a string buffer for better performance StringBuilder buf = new StringBuilder(); buf.append(time); // pad to 8 to make it more readable for( int i=0; i<8-buf.length(); i++ ) { buf.append(' '); } // Append a readable representation of the log level. switch(level) { case LOG_LEVEL_TRACE: buf.append(" T "); break; case LOG_LEVEL_DEBUG: buf.append(" D "); break; case LOG_LEVEL_INFO: buf.append(" I "); break; case LOG_LEVEL_WARN: buf.append(" W "); break; case LOG_LEVEL_ERROR: buf.append(" E "); break; //case : buf.append(" F "); break; default: buf.append(" "); } // Append the name of the log instance if so configured buf.append(name); buf.append(' '); // pad to 20 chars for( int i=0; i<8-buf.length(); i++ ) { buf.append(' '); } // Append the message buf.append(message); // Append stack trace if not null if(t != null) { buf.append(System.lineSeparator()); java.io.StringWriter sw= new java.io.StringWriter(1024); java.io.PrintWriter pw= new java.io.PrintWriter(sw); t.printStackTrace(pw); pw.close(); buf.append(sw.toString()); } buf.append(System.lineSeparator()); // Print to the appropriate destination return buf.toString(); } }