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core/loggingmanager.lua @ 3852:ab8d1c90527c
mod_storage_sql: Fixed a typo.
author | Waqas Hussain <waqas20@gmail.com> |
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date | Sun, 12 Dec 2010 05:38:08 +0500 |
parent | 3540:bc139431830b |
child | 3750:e076e4bf70bf |
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1 -- Prosody IM |
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2 -- Copyright (C) 2008-2010 Matthew Wild |
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3 -- Copyright (C) 2008-2010 Waqas Hussain |
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4 -- |
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5 -- This project is MIT/X11 licensed. Please see the |
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6 -- COPYING file in the source package for more information. |
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7 -- |
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8 |
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9 |
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10 local format, rep = string.format, string.rep; |
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11 local pcall = pcall; |
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12 local debug = debug; |
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13 local tostring, setmetatable, rawset, pairs, ipairs, type = |
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14 tostring, setmetatable, rawset, pairs, ipairs, type; |
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15 local io_open, io_write = io.open, io.write; |
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16 local math_max, rep = math.max, string.rep; |
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17 local os_date, os_getenv = os.date, os.getenv; |
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18 local getstyle, getstring = require "util.termcolours".getstyle, require "util.termcolours".getstring; |
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19 |
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20 if os.getenv("__FLUSH_LOG") then |
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21 local io_flush = io.flush; |
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22 local _io_write = io_write; |
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23 io_write = function(...) _io_write(...); io_flush(); end |
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24 end |
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25 |
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26 local config = require "core.configmanager"; |
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27 local logger = require "util.logger"; |
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28 local prosody = prosody; |
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29 |
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30 local debug_mode = config.get("*", "core", "debug"); |
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31 |
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32 _G.log = logger.init("general"); |
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33 |
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34 module "loggingmanager" |
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35 |
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36 -- The log config used if none specified in the config file (see reload_logging for initialization) |
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37 local default_logging; |
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38 local default_file_logging; |
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39 local default_timestamp = "%b %d %H:%M:%S"; |
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40 -- The actual config loggingmanager is using |
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41 local logging_config; |
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42 |
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43 local apply_sink_rules; |
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44 local log_sink_types = setmetatable({}, { __newindex = function (t, k, v) rawset(t, k, v); apply_sink_rules(k); end; }); |
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45 local get_levels; |
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46 local logging_levels = { "debug", "info", "warn", "error", "critical" } |
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47 |
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48 -- Put a rule into action. Requires that the sink type has already been registered. |
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49 -- This function is called automatically when a new sink type is added [see apply_sink_rules()] |
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50 local function add_rule(sink_config) |
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51 local sink_maker = log_sink_types[sink_config.to]; |
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52 if sink_maker then |
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53 if sink_config.levels and not sink_config.source then |
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54 -- Create sink |
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55 local sink = sink_maker(sink_config); |
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56 |
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57 -- Set sink for all chosen levels |
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58 for level in pairs(get_levels(sink_config.levels)) do |
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59 logger.add_level_sink(level, sink); |
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60 end |
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61 elseif sink_config.source and not sink_config.levels then |
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62 logger.add_name_sink(sink_config.source, sink_maker(sink_config)); |
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63 elseif sink_config.source and sink_config.levels then |
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64 local levels = get_levels(sink_config.levels); |
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65 local sink = sink_maker(sink_config); |
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66 logger.add_name_sink(sink_config.source, |
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67 function (name, level, ...) |
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68 if levels[level] then |
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69 return sink(name, level, ...); |
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70 end |
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71 end); |
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72 else |
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73 -- All sources |
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74 -- Create sink |
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75 local sink = sink_maker(sink_config); |
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76 |
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77 -- Set sink for all levels |
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78 for _, level in pairs(logging_levels) do |
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79 logger.add_level_sink(level, sink); |
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80 end |
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81 end |
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82 else |
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83 -- No such sink type |
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84 end |
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85 end |
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86 |
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87 -- Search for all rules using a particular sink type, and apply |
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88 -- them. Called automatically when a new sink type is added to |
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89 -- the log_sink_types table. |
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90 function apply_sink_rules(sink_type) |
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91 if type(logging_config) == "table" then |
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92 |
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93 if sink_type == "file" then |
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94 for _, level in ipairs(logging_levels) do |
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95 if type(logging_config[level]) == "string" then |
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96 add_rule({ |
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97 to = "file", |
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98 filename = logging_config[level], |
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99 timestamps = true, |
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100 levels = { min = level }, |
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101 }); |
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102 end |
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103 end |
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104 end |
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105 |
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106 for _, sink_config in pairs(logging_config) do |
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107 if (type(sink_config) == "table" and sink_config.to == sink_type) then |
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108 add_rule(sink_config); |
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109 elseif (type(sink_config) == "string" and sink_config:match("^%*(.+)") == sink_type) then |
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110 add_rule({ levels = { min = "debug" }, to = sink_type }); |
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111 end |
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112 end |
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113 elseif type(logging_config) == "string" and (not logging_config:match("^%*")) and sink_type == "file" then |
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114 -- User specified simply a filename, and the "file" sink type |
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115 -- was just added |
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116 for _, sink_config in pairs(default_file_logging) do |
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117 sink_config.filename = logging_config; |
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118 add_rule(sink_config); |
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119 sink_config.filename = nil; |
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120 end |
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121 elseif type(logging_config) == "string" and logging_config:match("^%*(.+)") == sink_type then |
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122 -- Log all levels (debug+) to this sink |
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123 add_rule({ levels = { min = "debug" }, to = sink_type }); |
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124 end |
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125 end |
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126 |
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127 |
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128 |
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129 --- Helper function to get a set of levels given a "criteria" table |
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130 function get_levels(criteria, set) |
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131 set = set or {}; |
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132 if type(criteria) == "string" then |
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133 set[criteria] = true; |
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134 return set; |
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135 end |
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136 local min, max = criteria.min, criteria.max; |
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137 if min or max then |
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138 local in_range; |
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139 for _, level in ipairs(logging_levels) do |
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140 if min == level then |
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141 set[level] = true; |
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142 in_range = true; |
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143 elseif max == level then |
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144 set[level] = true; |
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145 return set; |
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146 elseif in_range then |
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147 set[level] = true; |
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148 end |
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149 end |
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150 end |
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151 |
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152 for _, level in ipairs(criteria) do |
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153 set[level] = true; |
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154 end |
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155 return set; |
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156 end |
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157 |
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158 -- Initialize config, etc. -- |
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159 function reload_logging() |
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160 local old_sink_types = {}; |
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161 |
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162 for name, sink_maker in pairs(log_sink_types) do |
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163 old_sink_types[name] = sink_maker; |
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164 log_sink_types[name] = nil; |
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165 end |
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166 |
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167 logger.reset(); |
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168 |
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169 default_logging = { { to = "console" , levels = { min = (debug_mode and "debug") or "info" } } }; |
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170 default_file_logging = { |
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171 { to = "file", levels = { min = (debug_mode and "debug") or "info" }, timestamps = true } |
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172 }; |
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173 default_timestamp = "%b %d %H:%M:%S"; |
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174 |
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175 logging_config = config.get("*", "core", "log") or default_logging; |
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176 |
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177 |
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178 for name, sink_maker in pairs(old_sink_types) do |
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179 log_sink_types[name] = sink_maker; |
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180 end |
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181 |
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182 prosody.events.fire_event("logging-reloaded"); |
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183 end |
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184 |
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185 reload_logging(); |
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186 prosody.events.add_handler("config-reloaded", reload_logging); |
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187 |
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188 --- Definition of built-in logging sinks --- |
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189 |
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190 -- Null sink, must enter log_sink_types *first* |
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191 function log_sink_types.nowhere() |
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192 return function () return false; end; |
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193 end |
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194 |
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195 -- Column width for "source" (used by stdout and console) |
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196 local sourcewidth = 20; |
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197 |
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198 function log_sink_types.stdout() |
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199 local timestamps = config.timestamps; |
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200 |
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201 if timestamps == true then |
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202 timestamps = default_timestamp; -- Default format |
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203 end |
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204 |
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205 return function (name, level, message, ...) |
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206 sourcewidth = math_max(#name+2, sourcewidth); |
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207 local namelen = #name; |
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208 if timestamps then |
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209 io_write(os_date(timestamps), " "); |
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210 end |
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211 if ... then |
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212 io_write(name, rep(" ", sourcewidth-namelen), level, "\t", format(message, ...), "\n"); |
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213 else |
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214 io_write(name, rep(" ", sourcewidth-namelen), level, "\t", message, "\n"); |
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215 end |
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216 end |
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217 end |
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218 |
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219 do |
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220 local do_pretty_printing = not os_getenv("WINDIR"); |
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221 |
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222 local logstyles = {}; |
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223 if do_pretty_printing then |
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224 logstyles["info"] = getstyle("bold"); |
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225 logstyles["warn"] = getstyle("bold", "yellow"); |
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226 logstyles["error"] = getstyle("bold", "red"); |
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227 end |
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228 function log_sink_types.console(config) |
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229 -- Really if we don't want pretty colours then just use plain stdout |
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230 if not do_pretty_printing then |
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231 return log_sink_types.stdout(config); |
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232 end |
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233 |
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234 local timestamps = config.timestamps; |
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235 |
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236 if timestamps == true then |
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237 timestamps = default_timestamp; -- Default format |
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238 end |
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239 |
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240 return function (name, level, message, ...) |
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241 sourcewidth = math_max(#name+2, sourcewidth); |
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242 local namelen = #name; |
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243 |
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244 if timestamps then |
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245 io_write(os_date(timestamps), " "); |
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246 end |
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247 if ... then |
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248 io_write(name, rep(" ", sourcewidth-namelen), getstring(logstyles[level], level), "\t", format(message, ...), "\n"); |
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249 else |
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250 io_write(name, rep(" ", sourcewidth-namelen), getstring(logstyles[level], level), "\t", message, "\n"); |
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251 end |
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252 end |
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253 end |
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254 end |
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255 |
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256 local empty_function = function () end; |
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257 function log_sink_types.file(config) |
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258 local log = config.filename; |
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259 local logfile = io_open(log, "a+"); |
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260 if not logfile then |
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261 return empty_function; |
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262 end |
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263 local write, flush = logfile.write, logfile.flush; |
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264 |
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265 prosody.events.add_handler("logging-reloading", function () |
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266 if logfile then |
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267 logfile:close(); |
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268 end |
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269 end); |
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270 |
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271 local timestamps = config.timestamps; |
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272 |
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273 if timestamps == nil or timestamps == true then |
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274 timestamps = default_timestamp; -- Default format |
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275 end |
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276 |
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277 return function (name, level, message, ...) |
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278 if timestamps then |
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279 write(logfile, os_date(timestamps), " "); |
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280 end |
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281 if ... then |
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282 write(logfile, name, "\t", level, "\t", format(message, ...), "\n"); |
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283 else |
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284 write(logfile, name, "\t" , level, "\t", message, "\n"); |
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285 end |
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286 flush(logfile); |
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287 end; |
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288 end |
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289 |
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290 function register_sink_type(name, sink_maker) |
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291 local old_sink_maker = log_sink_types[name]; |
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292 log_sink_types[name] = sink_maker; |
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293 return old_sink_maker; |
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294 end |
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295 |
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296 return _M; |