prosody
4f0f5b49bb03
core/loggingmanager.lua

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core/loggingmanager.lua @ 8555:4f0f5b49bb03

vairious: Add annotation when an empty environment is set [luacheck]
author Kim Alvefur <zash@zash.se>
date Wed, 28 Feb 2018 20:06:26 +0100
parent 8355:45383e071ded
child 8693:6e24a69b03af
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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 -- luacheck: globals log prosody.log
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9
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10 local format = require "util.format".format;
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11 local setmetatable, rawset, pairs, ipairs, type =
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12 setmetatable, rawset, pairs, ipairs, type;
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13 local stdout = io.stdout;
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14 local io_open = io.open;
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15 local math_max, rep = math.max, string.rep;
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16 local os_date = os.date;
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17 local getstyle, getstring = require "util.termcolours".getstyle, require "util.termcolours".getstring;
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19 local config = require "core.configmanager";
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20 local logger = require "util.logger";
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21 local prosody = prosody;
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22
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23 _G.log = logger.init("general");
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24 prosody.log = logger.init("general");
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25
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26 local _ENV = nil;
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27 -- luacheck: std none
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29 -- The log config used if none specified in the config file (see reload_logging for initialization)
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30 local default_logging;
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31 local default_file_logging;
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32 local default_timestamp = "%b %d %H:%M:%S ";
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33 -- The actual config loggingmanager is using
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34 local logging_config;
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35
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36 local apply_sink_rules;
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37 local log_sink_types = setmetatable({}, { __newindex = function (t, k, v) rawset(t, k, v); apply_sink_rules(k); end; });
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38 local get_levels;
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39 local logging_levels = { "debug", "info", "warn", "error" }
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40
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41 -- Put a rule into action. Requires that the sink type has already been registered.
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42 -- This function is called automatically when a new sink type is added [see apply_sink_rules()]
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43 local function add_rule(sink_config)
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44 local sink_maker = log_sink_types[sink_config.to];
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45 if not sink_maker then
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46 return; -- No such sink type
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47 end
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48
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49 -- Create sink
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50 local sink = sink_maker(sink_config);
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51
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52 -- Set sink for all chosen levels
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53 for level in pairs(get_levels(sink_config.levels or logging_levels)) do
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54 logger.add_level_sink(level, sink);
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55 end
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56 end
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57
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58 -- Search for all rules using a particular sink type, and apply
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59 -- them. Called automatically when a new sink type is added to
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60 -- the log_sink_types table.
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61 function apply_sink_rules(sink_type)
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62 if type(logging_config) == "table" then
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63
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64 for _, level in ipairs(logging_levels) do
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65 if type(logging_config[level]) == "string" then
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66 local value = logging_config[level];
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67 if sink_type == "file" and not value:match("^%*") then
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68 add_rule({
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69 to = sink_type;
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70 filename = value;
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71 timestamps = true;
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72 levels = { min = level };
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73 });
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74 elseif value == "*"..sink_type then
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75 add_rule({
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76 to = sink_type;
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77 levels = { min = level };
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78 });
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79 end
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80 end
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81 end
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82
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83 for _, sink_config in ipairs(logging_config) do
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84 if (type(sink_config) == "table" and sink_config.to == sink_type) then
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85 add_rule(sink_config);
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86 elseif (type(sink_config) == "string" and sink_config:match("^%*(.+)") == sink_type) then
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87 add_rule({ levels = { min = "debug" }, to = sink_type });
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88 end
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89 end
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90 elseif type(logging_config) == "string" and (not logging_config:match("^%*")) and sink_type == "file" then
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91 -- User specified simply a filename, and the "file" sink type
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92 -- was just added
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93 for _, sink_config in pairs(default_file_logging) do
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94 sink_config.filename = logging_config;
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95 add_rule(sink_config);
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96 sink_config.filename = nil;
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97 end
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98 elseif type(logging_config) == "string" and logging_config:match("^%*(.+)") == sink_type then
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99 -- Log all levels (debug+) to this sink
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100 add_rule({ levels = { min = "debug" }, to = sink_type });
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101 end
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102 end
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103
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104
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105
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106 --- Helper function to get a set of levels given a "criteria" table
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107 function get_levels(criteria, set)
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108 set = set or {};
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109 if type(criteria) == "string" then
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110 set[criteria] = true;
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111 return set;
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112 end
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113 local min, max = criteria.min, criteria.max;
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114 if min or max then
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115 local in_range;
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116 for _, level in ipairs(logging_levels) do
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117 if min == level then
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118 set[level] = true;
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119 in_range = true;
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120 elseif max == level then
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121 set[level] = true;
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122 return set;
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123 elseif in_range then
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124 set[level] = true;
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125 end
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126 end
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127 end
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128
1021
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129 for _, level in ipairs(criteria) do
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130 set[level] = true;
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131 end
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132 return set;
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133 end
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134
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135 -- Initialize config, etc. --
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136 local function reload_logging()
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137 local old_sink_types = {};
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138
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139 for name, sink_maker in pairs(log_sink_types) do
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140 old_sink_types[name] = sink_maker;
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141 log_sink_types[name] = nil;
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142 end
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143
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144 logger.reset();
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145
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146 local debug_mode = config.get("*", "debug");
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147
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148 default_logging = { { to = "console" , levels = { min = (debug_mode and "debug") or "info" } } };
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149 default_file_logging = {
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150 { to = "file", levels = { min = (debug_mode and "debug") or "info" }, timestamps = true }
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151 };
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152
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153 logging_config = config.get("*", "log") or default_logging;
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154
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155 for name, sink_maker in pairs(old_sink_types) do
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156 log_sink_types[name] = sink_maker;
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157 end
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158
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diff changeset
159 prosody.events.fire_event("logging-reloaded");
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160 end
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161
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162 reload_logging();
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163 prosody.events.add_handler("config-reloaded", reload_logging);
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164
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165 --- Definition of built-in logging sinks ---
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diff changeset
166
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167 -- Null sink, must enter log_sink_types *first*
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168 local function log_to_nowhere()
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169 return function () return false; end;
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170 end
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171 log_sink_types.nowhere = log_to_nowhere;
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172
7134
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173 local function log_to_file(sink_config, logfile)
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174 logfile = logfile or io_open(sink_config.filename, "a+");
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175 if not logfile then
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176 return log_to_nowhere(sink_config);
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177 end
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178 local write = logfile.write;
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179
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180 local timestamps = sink_config.timestamps;
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181
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182 if timestamps == true or timestamps == nil then
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183 timestamps = default_timestamp; -- Default format
7137
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184 elseif timestamps then
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185 timestamps = timestamps .. " ";
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186 end
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187
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188 if sink_config.buffer_mode ~= false then
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189 logfile:setvbuf(sink_config.buffer_mode or "line");
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190 end
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191
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192 -- Column width for "source" (used by stdout and console)
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193 local sourcewidth = sink_config.source_width;
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diff changeset
194
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195 if sourcewidth then
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196 return function (name, level, message, ...)
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197 sourcewidth = math_max(#name+2, sourcewidth);
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198 write(logfile, timestamps and os_date(timestamps) or "", name, rep(" ", sourcewidth-#name), level, "\t", format(message, ...), "\n");
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199 end
8227
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diff changeset
200 else
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diff changeset
201 return function (name, level, message, ...)
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diff changeset
202 write(logfile, timestamps and os_date(timestamps) or "", name, "\t", level, "\t", format(message, ...), "\n");
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diff changeset
203 end
7134
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204 end
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205 end
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206 log_sink_types.file = log_to_file;
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207
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diff changeset
208 local function log_to_stdout(sink_config)
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diff changeset
209 if not sink_config.timestamps then
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diff changeset
210 sink_config.timestamps = false;
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diff changeset
211 end
7136
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diff changeset
212 if sink_config.source_width == nil then
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diff changeset
213 sink_config.source_width = 20;
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214 end
7135
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diff changeset
215 return log_to_file(sink_config, stdout);
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diff changeset
216 end
7134
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diff changeset
217 log_sink_types.stdout = log_to_stdout;
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218
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diff changeset
219 local do_pretty_printing = true;
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220
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diff changeset
221 local logstyles;
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diff changeset
222 if do_pretty_printing then
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diff changeset
223 logstyles = {};
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diff changeset
224 logstyles["info"] = getstyle("bold");
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diff changeset
225 logstyles["warn"] = getstyle("bold", "yellow");
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diff changeset
226 logstyles["error"] = getstyle("bold", "red");
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diff changeset
227 end
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diff changeset
228
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diff changeset
229 local function log_to_console(sink_config)
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diff changeset
230 -- Really if we don't want pretty colours then just use plain stdout
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231 local logstdout = log_to_stdout(sink_config);
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232 if not do_pretty_printing then
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233 return logstdout;
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234 end
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235 return function (name, level, message, ...)
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236 local logstyle = logstyles[level];
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237 if logstyle then
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238 level = getstring(logstyle, level);
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239 end
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240 return logstdout(name, level, message, ...);
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241 end
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242 end
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243 log_sink_types.console = log_to_console;
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244
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245 local function register_sink_type(name, sink_maker)
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246 local old_sink_maker = log_sink_types[name];
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247 log_sink_types[name] = sink_maker;
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248 return old_sink_maker;
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249 end
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parents: 1024
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250
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251 return {
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252 reload_logging = reload_logging;
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253 register_sink_type = register_sink_type;
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254 }