prosody
1cc5ea1df5ba
core/loggingmanager.lua

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core/loggingmanager.lua @ 8965:1cc5ea1df5ba

mod_pep: Move comment to a shorter line [luacheck]
author Kim Alvefur <zash@zash.se>
date Fri, 06 Jul 2018 00:04:13 +0200
parent 8750:7ae09468ad92
child 9902:3eea63a68e0f
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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Matthew Wild <mwild1@gmail.com>
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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 _ENV = nil;
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22 -- luacheck: std none
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23
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24 -- The log config used if none specified in the config file (see reload_logging for initialization)
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25 local default_logging;
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26 local default_file_logging;
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27 local default_timestamp = "%b %d %H:%M:%S ";
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28 -- The actual config loggingmanager is using
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29 local logging_config;
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30
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31 local apply_sink_rules;
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32 local log_sink_types = setmetatable({}, { __newindex = function (t, k, v) rawset(t, k, v); apply_sink_rules(k); end; });
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33 local get_levels;
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34 local logging_levels = { "debug", "info", "warn", "error" }
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35
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36 -- Put a rule into action. Requires that the sink type has already been registered.
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37 -- This function is called automatically when a new sink type is added [see apply_sink_rules()]
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38 local function add_rule(sink_config)
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39 local sink_maker = log_sink_types[sink_config.to];
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40 if not sink_maker then
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41 return; -- No such sink type
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42 end
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43
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44 -- Create sink
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45 local sink = sink_maker(sink_config);
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46
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47 -- Set sink for all chosen levels
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48 for level in pairs(get_levels(sink_config.levels or logging_levels)) do
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49 logger.add_level_sink(level, sink);
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50 end
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51 end
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52
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53 -- Search for all rules using a particular sink type, and apply
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54 -- them. Called automatically when a new sink type is added to
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55 -- the log_sink_types table.
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56 function apply_sink_rules(sink_type)
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57 if type(logging_config) == "table" then
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58
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59 for _, level in ipairs(logging_levels) do
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60 if type(logging_config[level]) == "string" then
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61 local value = logging_config[level];
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62 if sink_type == "file" and not value:match("^%*") then
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63 add_rule({
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64 to = sink_type;
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65 filename = value;
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66 timestamps = true;
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67 levels = { min = level };
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68 });
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69 elseif value == "*"..sink_type then
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70 add_rule({
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71 to = sink_type;
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72 levels = { min = level };
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73 });
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74 end
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75 end
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76 end
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77
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78 for _, sink_config in ipairs(logging_config) do
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79 if (type(sink_config) == "table" and sink_config.to == sink_type) then
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80 add_rule(sink_config);
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81 elseif (type(sink_config) == "string" and sink_config:match("^%*(.+)") == sink_type) then
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82 add_rule({ levels = { min = "debug" }, to = sink_type });
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83 end
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84 end
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85 elseif type(logging_config) == "string" and (not logging_config:match("^%*")) and sink_type == "file" then
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86 -- User specified simply a filename, and the "file" sink type
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87 -- was just added
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88 for _, sink_config in pairs(default_file_logging) do
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89 sink_config.filename = logging_config;
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90 add_rule(sink_config);
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91 sink_config.filename = nil;
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92 end
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93 elseif type(logging_config) == "string" and logging_config:match("^%*(.+)") == sink_type then
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94 -- Log all levels (debug+) to this sink
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95 add_rule({ levels = { min = "debug" }, to = sink_type });
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96 end
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97 end
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98
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99
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100
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101 --- Helper function to get a set of levels given a "criteria" table
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102 function get_levels(criteria, set)
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103 set = set or {};
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104 if type(criteria) == "string" then
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105 set[criteria] = true;
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106 return set;
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107 end
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108 local min, max = criteria.min, criteria.max;
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109 if min or max then
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110 local in_range;
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111 for _, level in ipairs(logging_levels) do
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112 if min == level then
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113 set[level] = true;
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114 in_range = true;
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115 elseif max == level then
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116 set[level] = true;
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117 return set;
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118 elseif in_range then
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119 set[level] = true;
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120 end
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121 end
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122 end
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123
1021
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124 for _, level in ipairs(criteria) do
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125 set[level] = true;
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126 end
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127 return set;
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128 end
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129
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130 -- Initialize config, etc. --
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131 local function reload_logging()
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132 local old_sink_types = {};
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133
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134 for name, sink_maker in pairs(log_sink_types) do
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135 old_sink_types[name] = sink_maker;
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136 log_sink_types[name] = nil;
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137 end
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138
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139 logger.reset();
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140
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141 local debug_mode = config.get("*", "debug");
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142
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143 default_logging = { { to = "console" , levels = { min = (debug_mode and "debug") or "info" } } };
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144 default_file_logging = {
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145 { to = "file", levels = { min = (debug_mode and "debug") or "info" }, timestamps = true }
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146 };
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147
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148 logging_config = config.get("*", "log") or default_logging;
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149
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150 for name, sink_maker in pairs(old_sink_types) do
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151 log_sink_types[name] = sink_maker;
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152 end
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153 end
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154
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155 --- Definition of built-in logging sinks ---
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156
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157 -- Null sink, must enter log_sink_types *first*
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158 local function log_to_nowhere()
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159 return function () return false; end;
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160 end
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161 log_sink_types.nowhere = log_to_nowhere;
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162
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163 local function log_to_file(sink_config, logfile)
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164 logfile = logfile or io_open(sink_config.filename, "a+");
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165 if not logfile then
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166 return log_to_nowhere(sink_config);
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167 end
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168 local write = logfile.write;
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169
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170 local timestamps = sink_config.timestamps;
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171
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172 if timestamps == true or timestamps == nil then
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173 timestamps = default_timestamp; -- Default format
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174 elseif timestamps then
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175 timestamps = timestamps .. " ";
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176 end
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177
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178 if sink_config.buffer_mode ~= false then
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179 logfile:setvbuf(sink_config.buffer_mode or "line");
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180 end
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181
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182 -- Column width for "source" (used by stdout and console)
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183 local sourcewidth = sink_config.source_width;
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184
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185 if sourcewidth then
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186 return function (name, level, message, ...)
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187 sourcewidth = math_max(#name+2, sourcewidth);
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188 write(logfile, timestamps and os_date(timestamps) or "", name, rep(" ", sourcewidth-#name), level, "\t", format(message, ...), "\n");
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189 end
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190 else
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191 return function (name, level, message, ...)
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192 write(logfile, timestamps and os_date(timestamps) or "", name, "\t", level, "\t", format(message, ...), "\n");
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193 end
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194 end
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195 end
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196 log_sink_types.file = log_to_file;
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197
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198 local function log_to_stdout(sink_config)
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199 if not sink_config.timestamps then
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200 sink_config.timestamps = false;
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201 end
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diff changeset
202 if sink_config.source_width == nil then
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203 sink_config.source_width = 20;
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204 end
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205 return log_to_file(sink_config, stdout);
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206 end
7134
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207 log_sink_types.stdout = log_to_stdout;
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208
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diff changeset
209 local do_pretty_printing = true;
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210
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diff changeset
211 local logstyles;
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diff changeset
212 if do_pretty_printing then
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213 logstyles = {};
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214 logstyles["info"] = getstyle("bold");
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215 logstyles["warn"] = getstyle("bold", "yellow");
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diff changeset
216 logstyles["error"] = getstyle("bold", "red");
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217 end
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218
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219 local function log_to_console(sink_config)
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220 -- Really if we don't want pretty colours then just use plain stdout
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diff changeset
221 local logstdout = log_to_stdout(sink_config);
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diff changeset
222 if not do_pretty_printing then
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diff changeset
223 return logstdout;
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224 end
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225 return function (name, level, message, ...)
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diff changeset
226 local logstyle = logstyles[level];
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227 if logstyle then
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228 level = getstring(logstyle, level);
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229 end
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230 return logstdout(name, level, message, ...);
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231 end
b7b6b1d01224 loggingmanager: Refactor the console log sink to re-use the stdout sink which in turn uses the file sink (tailcalls!)
Kim Alvefur <zash@zash.se>
parents: 7133
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232 end
b7b6b1d01224 loggingmanager: Refactor the console log sink to re-use the stdout sink which in turn uses the file sink (tailcalls!)
Kim Alvefur <zash@zash.se>
parents: 7133
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233 log_sink_types.console = log_to_console;
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ec013f93de81 core.loggingmanager: Refactoring, converted to a module. Now possible to register additional sink types (think syslog) from other modules
Matthew Wild <mwild1@gmail.com>
parents: 1024
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234
6779
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Kim Alvefur <zash@zash.se>
parents: 6719
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235 local function register_sink_type(name, sink_maker)
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Matthew Wild <mwild1@gmail.com>
parents: 1024
diff changeset
236 local old_sink_maker = log_sink_types[name];
ec013f93de81 core.loggingmanager: Refactoring, converted to a module. Now possible to register additional sink types (think syslog) from other modules
Matthew Wild <mwild1@gmail.com>
parents: 1024
diff changeset
237 log_sink_types[name] = sink_maker;
ec013f93de81 core.loggingmanager: Refactoring, converted to a module. Now possible to register additional sink types (think syslog) from other modules
Matthew Wild <mwild1@gmail.com>
parents: 1024
diff changeset
238 return old_sink_maker;
ec013f93de81 core.loggingmanager: Refactoring, converted to a module. Now possible to register additional sink types (think syslog) from other modules
Matthew Wild <mwild1@gmail.com>
parents: 1024
diff changeset
239 end
ec013f93de81 core.loggingmanager: Refactoring, converted to a module. Now possible to register additional sink types (think syslog) from other modules
Matthew Wild <mwild1@gmail.com>
parents: 1024
diff changeset
240
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6236668da30a core.*: Remove use of module() function
Kim Alvefur <zash@zash.se>
parents: 6719
diff changeset
241 return {
6236668da30a core.*: Remove use of module() function
Kim Alvefur <zash@zash.se>
parents: 6719
diff changeset
242 reload_logging = reload_logging;
6236668da30a core.*: Remove use of module() function
Kim Alvefur <zash@zash.se>
parents: 6719
diff changeset
243 register_sink_type = register_sink_type;
6236668da30a core.*: Remove use of module() function
Kim Alvefur <zash@zash.se>
parents: 6719
diff changeset
244 }