prosody
276f16101d59
core/loggingmanager.lua

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core/loggingmanager.lua @ 10982:276f16101d59

net.server_epoll: Make API-compatible with util.timer
author Kim Alvefur <zash@zash.se>
date Mon, 29 Jun 2020 16:42:16 +0200
parent 9927:1460c4966262
child 11641:b03053ec6dcf
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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 local format = require "util.format".format;
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10 local setmetatable, rawset, pairs, ipairs, type =
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11 setmetatable, rawset, pairs, ipairs, type;
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12 local stdout = io.stdout;
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13 local io_open = io.open;
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14 local math_max, rep = math.max, string.rep;
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15 local os_date = os.date;
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16 local getstyle, getstring = require "util.termcolours".getstyle, require "util.termcolours".getstring;
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17
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18 local config = require "core.configmanager";
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19 local logger = require "util.logger";
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20
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21 local have_pposix, pposix = pcall(require, "util.pposix");
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22 have_pposix = have_pposix and pposix._VERSION == "0.4.0";
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23
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24 local _ENV = nil;
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25 -- luacheck: std none
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26
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27 -- The log config used if none specified in the config file (see reload_logging for initialization)
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28 local default_logging;
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29 local default_file_logging;
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30 local default_timestamp = "%b %d %H:%M:%S ";
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31 -- The actual config loggingmanager is using
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32 local logging_config;
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33
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34 local apply_sink_rules;
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35 local log_sink_types = setmetatable({}, { __newindex = function (t, k, v) rawset(t, k, v); apply_sink_rules(k); end; });
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36 local get_levels;
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37 local logging_levels = { "debug", "info", "warn", "error" }
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38
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39 -- Put a rule into action. Requires that the sink type has already been registered.
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40 -- This function is called automatically when a new sink type is added [see apply_sink_rules()]
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41 local function add_rule(sink_config)
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42 local sink_maker = log_sink_types[sink_config.to];
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43 if not sink_maker then
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44 return; -- No such sink type
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45 end
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46
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47 -- Create sink
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48 local sink = sink_maker(sink_config);
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49
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50 -- Set sink for all chosen levels
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51 for level in pairs(get_levels(sink_config.levels or logging_levels)) do
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52 logger.add_level_sink(level, sink);
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53 end
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54 end
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55
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56 -- Search for all rules using a particular sink type, and apply
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57 -- them. Called automatically when a new sink type is added to
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58 -- the log_sink_types table.
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59 function apply_sink_rules(sink_type)
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60 if type(logging_config) == "table" then
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61
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62 for _, level in ipairs(logging_levels) do
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63 if type(logging_config[level]) == "string" then
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64 local value = logging_config[level];
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65 if sink_type == "file" and not value:match("^%*") then
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66 add_rule({
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67 to = sink_type;
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68 filename = value;
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69 timestamps = true;
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70 levels = { min = level };
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71 });
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72 elseif value == "*"..sink_type then
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73 add_rule({
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74 to = sink_type;
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75 levels = { min = level };
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76 });
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77 end
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78 end
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79 end
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80
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81 for _, sink_config in ipairs(logging_config) do
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82 if (type(sink_config) == "table" and sink_config.to == sink_type) then
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83 add_rule(sink_config);
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84 elseif (type(sink_config) == "string" and sink_config:match("^%*(.+)") == sink_type) then
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85 add_rule({ levels = { min = "debug" }, to = sink_type });
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86 end
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87 end
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88 elseif type(logging_config) == "string" and (not logging_config:match("^%*")) and sink_type == "file" then
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89 -- User specified simply a filename, and the "file" sink type
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90 -- was just added
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91 for _, sink_config in pairs(default_file_logging) do
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92 sink_config.filename = logging_config;
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93 add_rule(sink_config);
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94 sink_config.filename = nil;
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95 end
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96 elseif type(logging_config) == "string" and logging_config:match("^%*(.+)") == sink_type then
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97 -- Log all levels (debug+) to this sink
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98 add_rule({ levels = { min = "debug" }, to = sink_type });
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99 end
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100 end
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101
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102
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103
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104 --- Helper function to get a set of levels given a "criteria" table
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105 function get_levels(criteria, set)
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106 set = set or {};
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107 if type(criteria) == "string" then
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108 set[criteria] = true;
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109 return set;
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110 end
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111 local min, max = criteria.min, criteria.max;
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112 if min or max then
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113 local in_range;
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114 for _, level in ipairs(logging_levels) do
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115 if min == level then
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116 set[level] = true;
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117 in_range = true;
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118 elseif max == level then
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119 set[level] = true;
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120 return set;
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121 elseif in_range then
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122 set[level] = true;
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123 end
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124 end
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125 end
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126
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127 for _, level in ipairs(criteria) do
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128 set[level] = true;
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129 end
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130 return set;
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131 end
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132
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133 -- Initialize config, etc. --
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134 local function reload_logging()
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135 local old_sink_types = {};
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136
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137 for name, sink_maker in pairs(log_sink_types) do
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138 old_sink_types[name] = sink_maker;
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139 log_sink_types[name] = nil;
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140 end
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141
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142 logger.reset();
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143
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144 local debug_mode = config.get("*", "debug");
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145
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146 default_logging = { { to = "console" , levels = { min = (debug_mode and "debug") or "info" } } };
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147 default_file_logging = {
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148 { to = "file", levels = { min = (debug_mode and "debug") or "info" }, timestamps = true }
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149 };
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150
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151 logging_config = config.get("*", "log") or default_logging;
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152
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153 for name, sink_maker in pairs(old_sink_types) do
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154 log_sink_types[name] = sink_maker;
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155 end
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156 end
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157
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158 --- Definition of built-in logging sinks ---
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159
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160 -- Null sink, must enter log_sink_types *first*
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161 local function log_to_nowhere()
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162 return function () return false; end;
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163 end
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164 log_sink_types.nowhere = log_to_nowhere;
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165
7134
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166 local function log_to_file(sink_config, logfile)
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167 logfile = logfile or io_open(sink_config.filename, "a+");
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168 if not logfile then
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169 return log_to_nowhere(sink_config);
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170 end
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171 local write = logfile.write;
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172
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173 local timestamps = sink_config.timestamps;
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174
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175 if timestamps == true or timestamps == nil then
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176 timestamps = default_timestamp; -- Default format
7137
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177 elseif timestamps then
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178 timestamps = timestamps .. " ";
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179 end
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180
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181 if sink_config.buffer_mode ~= false then
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182 logfile:setvbuf(sink_config.buffer_mode or "line");
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183 end
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184
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185 -- Column width for "source" (used by stdout and console)
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186 local sourcewidth = sink_config.source_width;
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187
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188 if sourcewidth then
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189 return function (name, level, message, ...)
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190 sourcewidth = math_max(#name+2, sourcewidth);
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191 write(logfile, timestamps and os_date(timestamps) or "", name, rep(" ", sourcewidth-#name), level, "\t", format(message, ...), "\n");
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192 end
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193 else
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194 return function (name, level, message, ...)
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195 write(logfile, timestamps and os_date(timestamps) or "", name, "\t", level, "\t", format(message, ...), "\n");
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196 end
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197 end
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198 end
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199 log_sink_types.file = log_to_file;
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200
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diff changeset
201 local function log_to_stdout(sink_config)
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202 if not sink_config.timestamps then
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203 sink_config.timestamps = false;
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204 end
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diff changeset
205 if sink_config.source_width == nil then
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diff changeset
206 sink_config.source_width = 20;
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207 end
7135
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diff changeset
208 return log_to_file(sink_config, stdout);
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diff changeset
209 end
7134
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diff changeset
210 log_sink_types.stdout = log_to_stdout;
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211
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diff changeset
212 local do_pretty_printing = true;
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213
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diff changeset
214 local logstyles;
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diff changeset
215 if do_pretty_printing then
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diff changeset
216 logstyles = {};
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diff changeset
217 logstyles["info"] = getstyle("bold");
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diff changeset
218 logstyles["warn"] = getstyle("bold", "yellow");
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diff changeset
219 logstyles["error"] = getstyle("bold", "red");
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diff changeset
220 end
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221
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diff changeset
222 local function log_to_console(sink_config)
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diff changeset
223 -- Really if we don't want pretty colours then just use plain stdout
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diff changeset
224 local logstdout = log_to_stdout(sink_config);
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diff changeset
225 if not do_pretty_printing then
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diff changeset
226 return logstdout;
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diff changeset
227 end
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diff changeset
228 return function (name, level, message, ...)
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diff changeset
229 local logstyle = logstyles[level];
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diff changeset
230 if logstyle then
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231 level = getstring(logstyle, level);
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232 end
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233 return logstdout(name, level, message, ...);
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234 end
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235 end
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236 log_sink_types.console = log_to_console;
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237
9927
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238 if have_pposix then
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239 local syslog_opened;
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240 local function log_to_syslog(sink_config) -- luacheck: ignore 212/sink_config
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241 if not syslog_opened then
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242 local facility = sink_config.syslog_facility or config.get("*", "syslog_facility");
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243 pposix.syslog_open(sink_config.syslog_name or "prosody", facility);
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244 syslog_opened = true;
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245 end
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246 local syslog = pposix.syslog_log;
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247 return function (name, level, message, ...)
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248 syslog(level, name, format(message, ...));
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249 end;
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250 end
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251 log_sink_types.syslog = log_to_syslog;
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252 end
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253
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254 local function register_sink_type(name, sink_maker)
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255 local old_sink_maker = log_sink_types[name];
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256 log_sink_types[name] = sink_maker;
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257 return old_sink_maker;
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258 end
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259
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260 return {
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261 reload_logging = reload_logging;
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262 register_sink_type = register_sink_type;
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263 }