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Configurator.d

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00001 /*******************************************************************************
00002 
00003         @file Configurator.d
00004 
00005         Copyright (C) 2004 Kris Bell
00006         
00007         This software is provided 'as-is', without any express or implied
00008         warranty. In no event will the authors be held liable for damages
00009         of any kind arising from the use of this software.
00010         
00011         Permission is hereby granted to anyone to use this software for any 
00012         purpose, including commercial applications, and to alter it and/or 
00013         redistribute it freely, subject to the following restrictions:
00014         
00015         1. The origin of this software must not be misrepresented; you must 
00016            not claim that you wrote the original software. If you use this 
00017            software in a product, an acknowledgment within documentation of 
00018            said product would be appreciated but is not required.
00019 
00020         2. Altered source versions must be plainly marked as such, and must 
00021            not be misrepresented as being the original software.
00022 
00023         3. This notice may not be removed or altered from any distribution
00024            of the source.
00025 
00026 
00027                         ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
00028 
00029       
00030         @version        Initial version, May 2004
00031         @author         Kris
00032 
00033 
00034 *******************************************************************************/
00035 
00036 module mango.log.Configurator;
00037 
00038 private import  mango.log.Logger,
00039                 mango.log.Layout,
00040                 mango.log.DateLayout,
00041                 mango.log.ConsoleAppender;
00042 
00043 /*******************************************************************************
00044 
00045         A utility class for initializing the basic behaviour of the
00046         default logging hierarchy.
00047 
00048 *******************************************************************************/
00049 
00050 public class BasicConfigurator
00051 {
00052         /***********************************************************************
00053 
00054                 Create a default StdioAppender with a SimpleTimerLayout.
00055 
00056         ***********************************************************************/
00057 
00058         static protected Logger defaultAppender ()
00059         {
00060                 // get the hierarchy root
00061                 Logger root = Logger.getRootLogger();
00062 
00063                 // setup a default appender
00064                 root.addAppender (new ConsoleAppender (new SimpleTimerLayout));
00065 
00066                 return root;
00067         }
00068 
00069         /***********************************************************************
00070 
00071                 Add a default StdioAppender, with a SimpleTimerLayout, to 
00072                 the root node, and set the default activity level to be
00073                 everything enabled.
00074                 
00075         ***********************************************************************/
00076 
00077         static void configure ()
00078         {
00079                 // enable all messages for all loggers
00080                 defaultAppender().setLevel (Logger.Level.Trace);
00081         }
00082 }
00083 
00084 /*******************************************************************************
00085 
00086         A utility class for initializing the basic behaviour of the
00087         default logging hierarchy.
00088 
00089         PropertyConfigurator parses a much simplified version of the 
00090         property file. Mango.log only supports the settings of Logger 
00091         levels at this time; setup of Appenders and Layouts are currently 
00092         done "in the code", though this should not be a major hardship. 
00093 
00094 *******************************************************************************/
00095 
00096 public class PropertyConfigurator
00097 {
00098         private import mango.io.Properties;
00099 
00100         private static Logger.Level[char[]] map;
00101 
00102         /***********************************************************************
00103         
00104                 Populate a map of acceptable level names
00105 
00106         ***********************************************************************/
00107 
00108         static this()
00109         {
00110                 map["TRACE"]    = Logger.Level.Trace;
00111                 map["trace"]    = Logger.Level.Trace;
00112                 map["INFO"]     = Logger.Level.Info;
00113                 map["info"]     = Logger.Level.Info;
00114                 map["WARN"]     = Logger.Level.Warn;
00115                 map["warn"]     = Logger.Level.Warn;
00116                 map["ERROR"]    = Logger.Level.Error;
00117                 map["error"]    = Logger.Level.Error;
00118                 map["FATAL"]    = Logger.Level.Fatal;
00119                 map["fatal"]    = Logger.Level.Fatal;
00120                 map["NONE"]     = Logger.Level.None;
00121                 map["none"]     = Logger.Level.None;
00122         }
00123 
00124         /***********************************************************************
00125         
00126                 Add a default StdioAppender, with a SimpleTimerLayout, to 
00127                 the root node. The activity levels of all nodes are set
00128                 via a property file with name=value pairs specified that
00129                 follow this format:
00130 
00131                 name: the actual logger name, in dot notation format. The
00132                 name "root" is reserved to match the root logger node.
00133 
00134                 value: one of TRACE, INFO, WARN, ERROR, FATAL or NONE (or
00135                 the lowercase equivalents).
00136 
00137                 For example, the declaration
00138 
00139                 mango.unittest=INFO
00140 
00141                 sets the level of the logger called "mango.unittest".
00142 
00143         ***********************************************************************/
00144 
00145         static void configure (char[] filepath)
00146         {
00147                 void loader (char[] name, char[] value)
00148                 {
00149                         Logger l;
00150 
00151                         if (name == "root")
00152                             l = Logger.getRootLogger ();                            
00153                         else
00154                            l = Logger.getLogger (name);
00155 
00156                         if (l && value in map)
00157                             l.setLevel (map[value]);
00158                 }
00159 
00160                 // setup the basic stuff
00161                 BasicConfigurator.defaultAppender ();
00162 
00163                 // read and parse properties from file
00164                 Properties.load (filepath, &loader);
00165         }
00166 }

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