prosody
9a96969d4670
core/loggingmanager.lua

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core/loggingmanager.lua @ 3369:9a96969d4670

certmanager: Added copyright header.
author Waqas Hussain <waqas20@gmail.com>
date Thu, 15 Jul 2010 11:28:31 +0500
parent 3358:b5a812cf698c
child 3438:9a8b716fda14
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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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 eventmanager = require "core.eventmanager";
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28 local logger = require "util.logger";
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29 local prosody = prosody;
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31 local debug_mode = config.get("*", "core", "debug");
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33 _G.log = logger.init("general");
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34
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35 module "loggingmanager"
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36
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37 -- The log config used if none specified in the config file (see reload_logging for initialization)
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38 local default_logging;
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39 local default_file_logging;
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40 local default_timestamp = "%b %d %H:%M:%S";
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41 -- The actual config loggingmanager is using
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42 local logging_config;
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44 local apply_sink_rules;
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45 local log_sink_types = setmetatable({}, { __newindex = function (t, k, v) rawset(t, k, v); apply_sink_rules(k); end; });
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46 local get_levels;
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47 local logging_levels = { "debug", "info", "warn", "error", "critical" }
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48
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49 -- Put a rule into action. Requires that the sink type has already been registered.
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50 -- This function is called automatically when a new sink type is added [see apply_sink_rules()]
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51 local function add_rule(sink_config)
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52 local sink_maker = log_sink_types[sink_config.to];
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53 if sink_maker then
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54 if sink_config.levels and not sink_config.source then
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55 -- Create sink
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56 local sink = sink_maker(sink_config);
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57
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58 -- Set sink for all chosen levels
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59 for level in pairs(get_levels(sink_config.levels)) do
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60 logger.add_level_sink(level, sink);
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61 end
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62 elseif sink_config.source and not sink_config.levels then
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63 logger.add_name_sink(sink_config.source, sink_maker(sink_config));
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64 elseif sink_config.source and sink_config.levels then
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65 local levels = get_levels(sink_config.levels);
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66 local sink = sink_maker(sink_config);
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67 logger.add_name_sink(sink_config.source,
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68 function (name, level, ...)
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69 if levels[level] then
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70 return sink(name, level, ...);
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71 end
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72 end);
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73 else
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74 -- All sources
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75 -- Create sink
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76 local sink = sink_maker(sink_config);
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77
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78 -- Set sink for all levels
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79 for _, level in pairs(logging_levels) do
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80 logger.add_level_sink(level, sink);
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81 end
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82 end
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83 else
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84 -- No such sink type
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85 end
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86 end
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87
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88 -- Search for all rules using a particular sink type, and apply
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89 -- them. Called automatically when a new sink type is added to
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90 -- the log_sink_types table.
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91 function apply_sink_rules(sink_type)
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92 if type(logging_config) == "table" then
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93 for _, sink_config in pairs(logging_config) do
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94 if sink_config.to == sink_type then
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95 add_rule(sink_config);
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96 end
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97 end
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98 elseif type(logging_config) == "string" and (not logging_config:match("^%*")) and sink_type == "file" then
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99 -- User specified simply a filename, and the "file" sink type
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100 -- was just added
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101 for _, sink_config in pairs(default_file_logging) do
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102 sink_config.filename = logging_config;
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103 add_rule(sink_config);
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104 sink_config.filename = nil;
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105 end
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106 elseif type(logging_config) == "string" and logging_config:match("^%*(.+)") == sink_type then
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107 -- Log all levels (debug+) to this sink
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108 add_rule({ levels = { min = "debug" }, to = sink_type });
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109 end
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110 end
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114 --- Helper function to get a set of levels given a "criteria" table
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115 function get_levels(criteria, set)
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116 set = set or {};
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117 if type(criteria) == "string" then
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118 set[criteria] = true;
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119 return set;
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120 end
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121 local min, max = criteria.min, criteria.max;
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122 if min or max then
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123 local in_range;
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124 for _, level in ipairs(logging_levels) do
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125 if min == level then
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126 set[level] = true;
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127 in_range = true;
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128 elseif max == level then
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129 set[level] = true;
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130 return set;
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131 elseif in_range then
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132 set[level] = true;
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133 end
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134 end
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135 end
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136
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137 for _, level in ipairs(criteria) do
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138 set[level] = true;
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139 end
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140 return set;
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141 end
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142
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143 -- Initialize config, etc. --
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144 function reload_logging()
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145 local old_sink_types = {};
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146
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147 for name, sink_maker in pairs(log_sink_types) do
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148 old_sink_types[name] = sink_maker;
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149 log_sink_types[name] = nil;
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150 end
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151
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152 logger.reset();
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153
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154 default_logging = { { to = "console" , levels = { min = (debug_mode and "debug") or "info" } } };
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155 default_file_logging = { { to = "file", levels = { min = (debug_mode and "debug") or "info" }, timestamps = true } };
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156 default_timestamp = "%b %d %H:%M:%S";
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157
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158 logging_config = config.get("*", "core", "log") or default_logging;
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159
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160
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161 for name, sink_maker in pairs(old_sink_types) do
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162 log_sink_types[name] = sink_maker;
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163 end
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164
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165 prosody.events.fire_event("logging-reloaded");
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166 end
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167
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168 reload_logging();
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169 prosody.events.add_handler("config-reloaded", reload_logging);
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170
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171 --- Definition of built-in logging sinks ---
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172
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173 -- Null sink, must enter log_sink_types *first*
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174 function log_sink_types.nowhere()
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175 return function () return false; end;
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176 end
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177
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178 -- Column width for "source" (used by stdout and console)
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179 local sourcewidth = 20;
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180
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181 function log_sink_types.stdout()
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182 local timestamps = config.timestamps;
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183
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184 if timestamps == true then
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185 timestamps = default_timestamp; -- Default format
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186 end
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187
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188 return function (name, level, message, ...)
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189 sourcewidth = math_max(#name+2, sourcewidth);
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190 local namelen = #name;
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191 if timestamps then
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192 io_write(os_date(timestamps), " ");
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193 end
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194 if ... then
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195 io_write(name, rep(" ", sourcewidth-namelen), level, "\t", format(message, ...), "\n");
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196 else
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197 io_write(name, rep(" ", sourcewidth-namelen), level, "\t", message, "\n");
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198 end
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199 end
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200 end
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201
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202 do
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203 local do_pretty_printing = not os_getenv("WINDIR");
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204
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205 local logstyles = {};
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206 if do_pretty_printing then
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207 logstyles["info"] = getstyle("bold");
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208 logstyles["warn"] = getstyle("bold", "yellow");
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209 logstyles["error"] = getstyle("bold", "red");
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210 end
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211 function log_sink_types.console(config)
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212 -- Really if we don't want pretty colours then just use plain stdout
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213 if not do_pretty_printing then
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214 return log_sink_types.stdout(config);
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215 end
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216
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217 local timestamps = config.timestamps;
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218
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219 if timestamps == true then
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220 timestamps = default_timestamp; -- Default format
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221 end
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222
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223 return function (name, level, message, ...)
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224 sourcewidth = math_max(#name+2, sourcewidth);
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225 local namelen = #name;
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226
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227 if timestamps then
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228 io_write(os_date(timestamps), " ");
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229 end
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230 if ... then
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231 io_write(name, rep(" ", sourcewidth-namelen), getstring(logstyles[level], level), "\t", format(message, ...), "\n");
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232 else
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233 io_write(name, rep(" ", sourcewidth-namelen), getstring(logstyles[level], level), "\t", message, "\n");
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234 end
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235 end
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236 end
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237 end
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238
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239 local empty_function = function () end;
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240 function log_sink_types.file(config)
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241 local log = config.filename;
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242 local logfile = io_open(log, "a+");
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243 if not logfile then
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244 return empty_function;
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245 end
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246 local write, flush = logfile.write, logfile.flush;
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247
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248 prosody.events.add_handler("logging-reloading", function ()
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249 if logfile then
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250 logfile:close();
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251 end
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252 end);
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253
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254 local timestamps = config.timestamps;
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255
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256 if timestamps == nil or timestamps == true then
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257 timestamps = default_timestamp; -- Default format
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258 end
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259
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260 return function (name, level, message, ...)
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261 if timestamps then
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262 write(logfile, os_date(timestamps), " ");
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263 end
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264 if ... then
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265 write(logfile, name, "\t", level, "\t", format(message, ...), "\n");
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266 else
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267 write(logfile, name, "\t" , level, "\t", message, "\n");
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268 end
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269 flush(logfile);
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270 end;
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271 end
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272
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273 function register_sink_type(name, sink_maker)
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274 local old_sink_maker = log_sink_types[name];
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275 log_sink_types[name] = sink_maker;
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276 return old_sink_maker;
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277 end
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278
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279 return _M;