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annotate logging/src/luan/modules/logging/Logging.luan @ 532:9bf9ad733827

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add logging/init so that logging can be used if initialized elsewhere
author Franklin Schmidt <fschmidt@gmail.com>
date Wed, 27 May 2015 22:19:46 -0600
parents 92c3d22745b8
children
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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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7 local LuanLogger = require "java:luan.modules.logging.LuanLogger"
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9 local M = {}
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11 M.layout = "%d %-5p %c - %m%n"
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13 M.level = "INFO"
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15 M.console = "System.err" -- or "System.out" or set to nil for no console
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17 M.file = nil -- set to file name if you want logging to a file
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19 M.max_file_size = nil -- by default is "10MB"
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22 M.log4j_root_logger = Logger.getRootLogger()
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24 local function to_level(level)
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25 return level and Level.toLevel(level)
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26 end
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28 function M.log_to_file(file,logger_name) -- logger_name is optional, defaults to root logger
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29 local appender = RollingFileAppender.new(M.ptn_layout, file)
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30 appender.setMaxFileSize(M.max_file_size)
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31 local logger = logger_name and Logger.getLogger(logger_name) or M.log4j_root_logger
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32 logger.addAppender(appender)
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33 return appender
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34 end
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36 function M.init()
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37 M.log4j_root_logger.removeAllAppenders()
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38 M.log4j_root_logger.setLevel( to_level(M.level) )
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39 M.ptn_layout = EnhancedPatternLayout.new(M.layout)
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41 if M.console ~= nil then
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42 M.console_appender = ConsoleAppender.new(M.ptn_layout,M.console)
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43 M.log4j_root_logger.addAppender(M.console_appender)
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44 else
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45 M.console_appender = nil
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46 end
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47
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48 if M.file ~= nil then
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49 M.file_appender = M.log_to_file(M.file)
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50 else
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51 M.file_appender = nil
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52 end
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53 end
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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 local luanLogger = LuanLogger.new(log4j_logger)
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60 tbl.error = luanLogger.error
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61 tbl.warn = luanLogger.warn
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62 tbl.info = luanLogger.info
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63 tbl.debug = luanLogger.debug
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65 function tbl.get_level()
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66 local level = log4j_logger.getLevel()
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67 return level and level.toString()
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68 end
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70 function tbl.get_effective_level()
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71 local level = log4j_logger.getEffectiveLevel()
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72 return level and level.toString()
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73 end
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75 function tbl.set_level(level)
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76 log4j_logger.setLevel( to_level(level) )
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77 end
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79 return tbl
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80 end
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82 function M.logger(name)
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83 return to_luan_logger( Logger.getLogger(name) )
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84 end
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86 function M.root_logger()
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87 return to_luan_logger( Logger.getRootLogger() )
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88 end
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89
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90 return M