prosody
2f9088c663c6
core/loggingmanager.lua

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core/loggingmanager.lua @ 7139:2f9088c663c6

loggingmanager: Stringify all arguments to format so we can finally see the *real* error messages
author Kim Alvefur <zash@zash.se>
date Thu, 04 Feb 2016 20:45:37 +0100
parent 7138:ae1d53c2f598
child 7158:e5412e685991
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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 = string.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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18 local tostring = tostring;
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19 local unpack = table.unpack or unpack;
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20
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21 local config = require "core.configmanager";
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22 local logger = require "util.logger";
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23 local prosody = prosody;
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24
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25 _G.log = logger.init("general");
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26 prosody.log = logger.init("general");
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27
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28 local _ENV = nil;
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29
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30 -- The log config used if none specified in the config file (see reload_logging for initialization)
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31 local default_logging;
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32 local default_file_logging;
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33 local default_timestamp = "%b %d %H:%M:%S ";
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34 -- The actual config loggingmanager is using
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35 local logging_config;
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36
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37 local apply_sink_rules;
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38 local log_sink_types = setmetatable({}, { __newindex = function (t, k, v) rawset(t, k, v); apply_sink_rules(k); end; });
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39 local get_levels;
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40 local logging_levels = { "debug", "info", "warn", "error" }
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41
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42 -- Put a rule into action. Requires that the sink type has already been registered.
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43 -- This function is called automatically when a new sink type is added [see apply_sink_rules()]
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44 local function add_rule(sink_config)
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45 local sink_maker = log_sink_types[sink_config.to];
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46 if not sink_maker then
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47 return; -- No such sink type
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48 end
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49
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50 -- Create sink
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51 local sink = sink_maker(sink_config);
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52
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53 -- Set sink for all chosen levels
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54 for level in pairs(get_levels(sink_config.levels or logging_levels)) do
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55 logger.add_level_sink(level, sink);
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56 end
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57 end
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58
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59 -- Search for all rules using a particular sink type, and apply
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60 -- them. Called automatically when a new sink type is added to
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61 -- the log_sink_types table.
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62 function apply_sink_rules(sink_type)
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63 if type(logging_config) == "table" then
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64
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65 for _, level in ipairs(logging_levels) do
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66 if type(logging_config[level]) == "string" then
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67 local value = logging_config[level];
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68 if sink_type == "file" and not value:match("^%*") then
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69 add_rule({
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70 to = sink_type;
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71 filename = value;
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72 timestamps = true;
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73 levels = { min = level };
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74 });
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75 elseif value == "*"..sink_type then
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76 add_rule({
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77 to = sink_type;
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78 levels = { min = level };
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79 });
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80 end
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81 end
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82 end
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83
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84 for _, sink_config in ipairs(logging_config) do
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85 if (type(sink_config) == "table" and sink_config.to == sink_type) then
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86 add_rule(sink_config);
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87 elseif (type(sink_config) == "string" and sink_config:match("^%*(.+)") == sink_type) then
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88 add_rule({ levels = { min = "debug" }, to = sink_type });
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89 end
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90 end
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91 elseif type(logging_config) == "string" and (not logging_config:match("^%*")) and sink_type == "file" then
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92 -- User specified simply a filename, and the "file" sink type
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93 -- was just added
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94 for _, sink_config in pairs(default_file_logging) do
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95 sink_config.filename = logging_config;
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96 add_rule(sink_config);
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97 sink_config.filename = nil;
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98 end
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99 elseif type(logging_config) == "string" and logging_config:match("^%*(.+)") == sink_type then
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100 -- Log all levels (debug+) to this sink
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101 add_rule({ levels = { min = "debug" }, to = sink_type });
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102 end
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103 end
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104
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105
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106
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107 --- Helper function to get a set of levels given a "criteria" table
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108 function get_levels(criteria, set)
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109 set = set or {};
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110 if type(criteria) == "string" then
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111 set[criteria] = true;
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112 return set;
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113 end
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114 local min, max = criteria.min, criteria.max;
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115 if min or max then
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116 local in_range;
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117 for _, level in ipairs(logging_levels) do
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118 if min == level then
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119 set[level] = true;
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120 in_range = true;
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diff changeset
121 elseif max == level then
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122 set[level] = true;
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123 return set;
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124 elseif in_range then
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125 set[level] = true;
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126 end
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127 end
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128 end
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129
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130 for _, level in ipairs(criteria) do
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131 set[level] = true;
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132 end
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133 return set;
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134 end
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135
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136 -- Initialize config, etc. --
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137 local function reload_logging()
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138 local old_sink_types = {};
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139
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140 for name, sink_maker in pairs(log_sink_types) do
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141 old_sink_types[name] = sink_maker;
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142 log_sink_types[name] = nil;
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143 end
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144
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145 logger.reset();
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146
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147 local debug_mode = config.get("*", "debug");
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148
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149 default_logging = { { to = "console" , levels = { min = (debug_mode and "debug") or "info" } } };
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150 default_file_logging = {
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151 { to = "file", levels = { min = (debug_mode and "debug") or "info" }, timestamps = true }
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152 };
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153
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154 logging_config = config.get("*", "log") or default_logging;
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155
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156 for name, sink_maker in pairs(old_sink_types) do
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157 log_sink_types[name] = sink_maker;
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158 end
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159
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diff changeset
160 prosody.events.fire_event("logging-reloaded");
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161 end
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162
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diff changeset
163 reload_logging();
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164 prosody.events.add_handler("config-reloaded", reload_logging);
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165
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166 --- Definition of built-in logging sinks ---
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diff changeset
167
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168 -- Null sink, must enter log_sink_types *first*
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169 local function log_to_nowhere()
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170 return function () return false; end;
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171 end
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172 log_sink_types.nowhere = log_to_nowhere;
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173
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174 local function log_to_file(sink_config, logfile)
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175 logfile = logfile or io_open(sink_config.filename, "a+");
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176 if not logfile then
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177 return log_to_nowhere(sink_config);
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178 end
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179 local write = logfile.write;
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180
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181 local timestamps = sink_config.timestamps;
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182
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183 if timestamps == true then
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184 timestamps = default_timestamp; -- Default format
7137
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185 elseif timestamps then
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186 timestamps = timestamps .. " ";
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187 end
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188
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189 if sink_config.buffer_mode ~= false then
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diff changeset
190 logfile:setvbuf(sink_config.buffer_mode or "line");
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parents: 7006
diff changeset
191 end
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parents: 7006
diff changeset
192
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193 -- Column width for "source" (used by stdout and console)
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194 local sourcewidth = sink_config.source_width;
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195
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diff changeset
196 return function (name, level, message, ...)
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diff changeset
197 local n = select('#', ...);
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diff changeset
198 if n ~= 0 then
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diff changeset
199 local arg = { ... };
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diff changeset
200 for i = 1, n do
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diff changeset
201 arg[i] = tostring(arg[i]);
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diff changeset
202 end
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parents: 7138
diff changeset
203 message = format(message, unpack(arg, 1, n));
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diff changeset
204 end
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parents: 7138
diff changeset
205
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diff changeset
206 if sourcewidth then
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diff changeset
207 sourcewidth = math_max(#name+2, sourcewidth);
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diff changeset
208 name = name .. rep(" ", sourcewidth-#name);
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parents: 7134
diff changeset
209 else
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diff changeset
210 name = name .. "\t";
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diff changeset
211 end
7139
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diff changeset
212 write(logfile, timestamps and os_date(timestamps) or "", name, level, "\t", message, "\n");
7134
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diff changeset
213 end
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diff changeset
214 end
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diff changeset
215 log_sink_types.file = log_to_file;
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216
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diff changeset
217 local function log_to_stdout(sink_config)
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diff changeset
218 if not sink_config.timestamps then
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diff changeset
219 sink_config.timestamps = false;
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diff changeset
220 end
7136
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Kim Alvefur <zash@zash.se>
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diff changeset
221 if sink_config.source_width == nil then
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diff changeset
222 sink_config.source_width = 20;
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diff changeset
223 end
7135
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diff changeset
224 return log_to_file(sink_config, stdout);
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diff changeset
225 end
7134
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diff changeset
226 log_sink_types.stdout = log_to_stdout;
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227
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diff changeset
228 local do_pretty_printing = true;
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229
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diff changeset
230 local logstyles;
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diff changeset
231 if do_pretty_printing then
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232 logstyles = {};
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233 logstyles["info"] = getstyle("bold");
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234 logstyles["warn"] = getstyle("bold", "yellow");
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235 logstyles["error"] = getstyle("bold", "red");
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236 end
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237
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238 local function log_to_console(sink_config)
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239 -- Really if we don't want pretty colours then just use plain stdout
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240 local logstdout = log_to_stdout(sink_config);
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241 if not do_pretty_printing then
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242 return logstdout;
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243 end
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244 return function (name, level, message, ...)
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245 local logstyle = logstyles[level];
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246 if logstyle then
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247 level = getstring(logstyle, level);
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248 end
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249 return logstdout(name, level, message, ...);
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250 end
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251 end
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252 log_sink_types.console = log_to_console;
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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 }