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annotate logging/src/luan/modules/logging/Logging.luan @ 374:538c19ad1272

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simplify logging
author Franklin Schmidt <fschmidt@gmail.com>
date Fri, 17 Apr 2015 18:03:26 -0600
parents 7f7708e8fdd4
children 0a75ed73bccc
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1 java()
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2 local Logger = require "java:org.apache.log4j.Logger"
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3 local EnhancedPatternLayout = require "java:org.apache.log4j.EnhancedPatternLayout"
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4 local ConsoleAppender = require "java:org.apache.log4j.ConsoleAppender"
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5 local Level = require "java:org.apache.log4j.Level"
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6 local RollingFileAppender = require "java:org.apache.log4j.RollingFileAppender"
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9 layout = "%d %-5p %c - %m%n"
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11 level = "INFO"
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13 console = "System.err" -- or "System.out" or set to nil for no console
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15 file = nil -- set to file name if you want logging to a file
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17 max_file_size = nil -- by default is "10MB"
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20 log4j_root_logger = Logger.getRootLogger()
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22 local function to_level(level)
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23 return level and Level.toLevel(level)
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24 end
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26 function log_to_file(file,logger_name) -- logger_name is optional, defaults to root logger
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27 local appender = RollingFileAppender.new(ptn_layout, file)
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28 appender.setMaxFileSize(max_file_size)
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29 local logger = logger_name and Logger.getLogger(logger_name) or log4j_root_logger
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30 logger.addAppender(appender)
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31 return appender
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32 end
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34 function init()
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35 log4j_root_logger.removeAllAppenders()
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36 log4j_root_logger.setLevel( to_level(level) )
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37 ptn_layout = EnhancedPatternLayout.new(layout)
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39 if console ~= nil then
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40 console_appender = ConsoleAppender.new(ptn_layout,console)
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41 log4j_root_logger.addAppender(console_appender)
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42 else
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43 console_appender = nil
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44 end
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46 if file ~= nil then
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47 file_appender = log_to_file(file)
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48 else
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49 file_appender = nil
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50 end
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51 end
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53 init()
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56 local function to_luan_logger(log4j_logger)
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57 local tbl = {}
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58
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59 tbl.error = log4j_logger.error
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60 tbl.warn = log4j_logger.warn
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61 tbl.info = log4j_logger.info
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62 tbl.debug = log4j_logger.debug
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64 function tbl.get_level()
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65 local level = log4j_logger.getLevel()
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66 return level and level.toString()
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67 end
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69 function tbl.get_effective_level()
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70 local level = log4j_logger.getEffectiveLevel()
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71 return level and level.toString()
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72 end
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74 function tbl.set_level(level)
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75 log4j_logger.setLevel( to_level(level) )
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76 end
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78 return tbl
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79 end
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81 function logger(name)
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82 return to_luan_logger( Logger.getLogger(name) )
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83 end
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85 function root_logger()
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86 return to_luan_logger( Logger.getRootLogger() )
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87 end