prosody
ac142f5209d9
core/loggingmanager.lua

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core/loggingmanager.lua @ 7133:ac142f5209d9

loggingmanager: Write out color code, log level and reset code in one call
author Kim Alvefur <zash@zash.se>
date Thu, 04 Feb 2016 17:03:04 +0100
parent 7132:3868d231c2c5
child 7134:b7b6b1d01224
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rev   line source
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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 io_open, io_write = io.open, io.write;
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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 -- COMPAT: This should no longer be needed since the addition of setvbuf calls
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19 if os.getenv("__FLUSH_LOG") then
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20 local io_flush = io.flush;
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21 local _io_write = io_write;
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22 io_write = function(...) _io_write(...); io_flush(); end
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23 end
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24
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25 local config = require "core.configmanager";
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26 local logger = require "util.logger";
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27 local prosody = prosody;
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28
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29 _G.log = logger.init("general");
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30 prosody.log = logger.init("general");
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31
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32 local _ENV = nil;
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33
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34 -- The log config used if none specified in the config file (see reload_logging for initialization)
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35 local default_logging;
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36 local default_file_logging;
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37 local default_timestamp = "%b %d %H:%M:%S";
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38 -- The actual config loggingmanager is using
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39 local logging_config;
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40
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41 local apply_sink_rules;
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42 local log_sink_types = setmetatable({}, { __newindex = function (t, k, v) rawset(t, k, v); apply_sink_rules(k); end; });
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43 local get_levels;
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44 local logging_levels = { "debug", "info", "warn", "error" }
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45
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46 -- Put a rule into action. Requires that the sink type has already been registered.
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47 -- This function is called automatically when a new sink type is added [see apply_sink_rules()]
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48 local function add_rule(sink_config)
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49 local sink_maker = log_sink_types[sink_config.to];
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50 if not sink_maker then
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51 return; -- No such sink type
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52 end
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53
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54 -- Create sink
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55 local sink = sink_maker(sink_config);
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56
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57 -- Set sink for all chosen levels
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58 for level in pairs(get_levels(sink_config.levels or logging_levels)) do
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59 logger.add_level_sink(level, sink);
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60 end
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61 end
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62
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63 -- Search for all rules using a particular sink type, and apply
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64 -- them. Called automatically when a new sink type is added to
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65 -- the log_sink_types table.
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66 function apply_sink_rules(sink_type)
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67 if type(logging_config) == "table" then
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68
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69 for _, level in ipairs(logging_levels) do
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70 if type(logging_config[level]) == "string" then
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71 local value = logging_config[level];
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72 if sink_type == "file" and not value:match("^%*") then
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73 add_rule({
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74 to = sink_type;
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75 filename = value;
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76 timestamps = true;
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77 levels = { min = level };
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78 });
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79 elseif value == "*"..sink_type then
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80 add_rule({
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81 to = sink_type;
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82 levels = { min = level };
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83 });
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84 end
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85 end
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86 end
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87
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88 for _, sink_config in ipairs(logging_config) do
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89 if (type(sink_config) == "table" and sink_config.to == sink_type) then
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90 add_rule(sink_config);
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91 elseif (type(sink_config) == "string" and sink_config:match("^%*(.+)") == sink_type) then
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92 add_rule({ levels = { min = "debug" }, to = sink_type });
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93 end
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94 end
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95 elseif type(logging_config) == "string" and (not logging_config:match("^%*")) and sink_type == "file" then
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96 -- User specified simply a filename, and the "file" sink type
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97 -- was just added
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98 for _, sink_config in pairs(default_file_logging) do
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99 sink_config.filename = logging_config;
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100 add_rule(sink_config);
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101 sink_config.filename = nil;
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102 end
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103 elseif type(logging_config) == "string" and logging_config:match("^%*(.+)") == sink_type then
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104 -- Log all levels (debug+) to this sink
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105 add_rule({ levels = { min = "debug" }, to = sink_type });
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106 end
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107 end
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108
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110
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111 --- Helper function to get a set of levels given a "criteria" table
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112 function get_levels(criteria, set)
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113 set = set or {};
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114 if type(criteria) == "string" then
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115 set[criteria] = true;
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116 return set;
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117 end
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118 local min, max = criteria.min, criteria.max;
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119 if min or max then
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120 local in_range;
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121 for _, level in ipairs(logging_levels) do
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122 if min == level then
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123 set[level] = true;
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124 in_range = true;
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125 elseif max == level then
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126 set[level] = true;
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127 return set;
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128 elseif in_range then
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129 set[level] = true;
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130 end
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131 end
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132 end
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133
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134 for _, level in ipairs(criteria) do
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135 set[level] = true;
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136 end
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137 return set;
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138 end
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139
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140 -- Initialize config, etc. --
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141 local function reload_logging()
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142 local old_sink_types = {};
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143
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144 for name, sink_maker in pairs(log_sink_types) do
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145 old_sink_types[name] = sink_maker;
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146 log_sink_types[name] = nil;
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147 end
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148
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149 logger.reset();
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150
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151 local debug_mode = config.get("*", "debug");
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152
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153 default_logging = { { to = "console" , levels = { min = (debug_mode and "debug") or "info" } } };
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154 default_file_logging = {
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155 { to = "file", levels = { min = (debug_mode and "debug") or "info" }, timestamps = true }
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156 };
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157
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158 logging_config = config.get("*", "log") or default_logging;
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159
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160 for name, sink_maker in pairs(old_sink_types) do
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161 log_sink_types[name] = sink_maker;
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162 end
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163
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164 prosody.events.fire_event("logging-reloaded");
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165 end
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166
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167 reload_logging();
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168 prosody.events.add_handler("config-reloaded", reload_logging);
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169
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170 --- Definition of built-in logging sinks ---
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171
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172 -- Null sink, must enter log_sink_types *first*
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173 function log_sink_types.nowhere()
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174 return function () return false; end;
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175 end
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176
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177 -- Column width for "source" (used by stdout and console)
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178 local sourcewidth = 20;
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179
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180 function log_sink_types.stdout(sink_config)
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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
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185 end
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186
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187 if sink_config.buffer_mode ~= false then
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188 io.stdout:setvbuf(sink_config.buffer_mode or "line");
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189 end
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190
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191 return function (name, level, message, ...)
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192 sourcewidth = math_max(#name+2, sourcewidth);
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193 local namelen = #name;
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194 if timestamps then
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195 io_write(os_date(timestamps), " ");
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196 end
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197 if ... then
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198 io_write(name, rep(" ", sourcewidth-namelen), level, "\t", format(message, ...), "\n");
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199 else
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200 io_write(name, rep(" ", sourcewidth-namelen), level, "\t", message, "\n");
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201 end
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202 end
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203 end
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204
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205 do
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206 local do_pretty_printing = true;
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207
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208 local logstyles = {};
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209 if do_pretty_printing then
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210 logstyles["info"] = getstyle("bold");
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211 logstyles["warn"] = getstyle("bold", "yellow");
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212 logstyles["error"] = getstyle("bold", "red");
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213 end
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214 function log_sink_types.console(sink_config)
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215 -- Really if we don't want pretty colours then just use plain stdout
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216 if not do_pretty_printing then
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217 return log_sink_types.stdout(sink_config);
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218 end
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219
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220 local timestamps = sink_config.timestamps;
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221
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222 if timestamps == true then
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223 timestamps = default_timestamp; -- Default format
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224 end
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225
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226 if sink_config.buffer_mode ~= false then
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227 io.stdout:setvbuf(sink_config.buffer_mode or "line");
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228 end
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229
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230 return function (name, level, message, ...)
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231 sourcewidth = math_max(#name+2, sourcewidth);
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232 local namelen = #name;
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233
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234 if timestamps then
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parents: 1067
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235 io_write(os_date(timestamps), " ");
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236 end
3750
e076e4bf70bf core.loggingmanager: Updated to use termcolours.getstyle instead of termcolours.getstring for console logging.
Waqas Hussain <waqas20@gmail.com>
parents: 3540
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237 io_write(name, rep(" ", sourcewidth-namelen));
7133
ac142f5209d9 loggingmanager: Write out color code, log level and reset code in one call
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238 io_write(getstring(logstyles[level], level));
2586
26ead5e16cd3 loggingmanager: Trailing whitespace
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parents: 2139
diff changeset
239 if ... then
3750
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parents: 3540
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240 io_write("\t", format(message, ...), "\n");
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parents: 1024
diff changeset
241 else
3750
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parents: 3540
diff changeset
242 io_write("\t", message, "\n");
1031
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parents: 1024
diff changeset
243 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
244 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
245 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
246 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
247
1117
360ec48ea780 loggingmanager: File log sinks react to reopen-log-files event
Matthew Wild <mwild1@gmail.com>
parents: 1101
diff changeset
248 local empty_function = function () end;
6719
0ef7a8c8fe8c loggingmanager: Rename function arguments to avoid name conflict [luacheck] (core/ is now luacheck-clean!)
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parents: 6617
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249 function log_sink_types.file(sink_config)
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parents: 6617
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250 local log = sink_config.filename;
1031
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parents: 1024
diff changeset
251 local logfile = io_open(log, "a+");
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parents: 1024
diff changeset
252 if not logfile then
1117
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parents: 1101
diff changeset
253 return empty_function;
1031
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parents: 1024
diff changeset
254 end
7125
631c47a65519 loggingmanager: Call setvbuf on output files, defaulting to line-buffered, instead of manually calling flush(). Adds 'buffer_mode' option to sink configuration for stdout, console and file sinks.
Matthew Wild <mwild1@gmail.com>
parents: 7006
diff changeset
255
631c47a65519 loggingmanager: Call setvbuf on output files, defaulting to line-buffered, instead of manually calling flush(). Adds 'buffer_mode' option to sink configuration for stdout, console and file sinks.
Matthew Wild <mwild1@gmail.com>
parents: 7006
diff changeset
256 if sink_config.buffer_mode ~= false then
631c47a65519 loggingmanager: Call setvbuf on output files, defaulting to line-buffered, instead of manually calling flush(). Adds 'buffer_mode' option to sink configuration for stdout, console and file sinks.
Matthew Wild <mwild1@gmail.com>
parents: 7006
diff changeset
257 logfile:setvbuf(sink_config.buffer_mode or "line");
631c47a65519 loggingmanager: Call setvbuf on output files, defaulting to line-buffered, instead of manually calling flush(). Adds 'buffer_mode' option to sink configuration for stdout, console and file sinks.
Matthew Wild <mwild1@gmail.com>
parents: 7006
diff changeset
258 end
631c47a65519 loggingmanager: Call setvbuf on output files, defaulting to line-buffered, instead of manually calling flush(). Adds 'buffer_mode' option to sink configuration for stdout, console and file sinks.
Matthew Wild <mwild1@gmail.com>
parents: 7006
diff changeset
259
631c47a65519 loggingmanager: Call setvbuf on output files, defaulting to line-buffered, instead of manually calling flush(). Adds 'buffer_mode' option to sink configuration for stdout, console and file sinks.
Matthew Wild <mwild1@gmail.com>
parents: 7006
diff changeset
260 local write = logfile.write;
1117
360ec48ea780 loggingmanager: File log sinks react to reopen-log-files event
Matthew Wild <mwild1@gmail.com>
parents: 1101
diff changeset
261
6719
0ef7a8c8fe8c loggingmanager: Rename function arguments to avoid name conflict [luacheck] (core/ is now luacheck-clean!)
Matthew Wild <mwild1@gmail.com>
parents: 6617
diff changeset
262 local timestamps = sink_config.timestamps;
1078
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parents: 1067
diff changeset
263
1613
ebf0813a81f6 core.loggingmanager: Enable timestamps by default for file log sinks
Matthew Wild <mwild1@gmail.com>
parents: 1522
diff changeset
264 if timestamps == nil or timestamps == true then
1078
24c9ee99d900 loggingmanager: Support prepending timestamps in file/console/stdout log sinks
Matthew Wild <mwild1@gmail.com>
parents: 1067
diff changeset
265 timestamps = default_timestamp; -- Default format
24c9ee99d900 loggingmanager: Support prepending timestamps in file/console/stdout log sinks
Matthew Wild <mwild1@gmail.com>
parents: 1067
diff changeset
266 end
24c9ee99d900 loggingmanager: Support prepending timestamps in file/console/stdout log sinks
Matthew Wild <mwild1@gmail.com>
parents: 1067
diff changeset
267
1031
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parents: 1024
diff changeset
268 return function (name, level, message, ...)
1078
24c9ee99d900 loggingmanager: Support prepending timestamps in file/console/stdout log sinks
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parents: 1067
diff changeset
269 if timestamps then
24c9ee99d900 loggingmanager: Support prepending timestamps in file/console/stdout log sinks
Matthew Wild <mwild1@gmail.com>
parents: 1067
diff changeset
270 write(logfile, os_date(timestamps), " ");
24c9ee99d900 loggingmanager: Support prepending timestamps in file/console/stdout log sinks
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parents: 1067
diff changeset
271 end
2586
26ead5e16cd3 loggingmanager: Trailing whitespace
Matthew Wild <mwild1@gmail.com>
parents: 2139
diff changeset
272 if ... then
1031
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
273 write(logfile, name, "\t", level, "\t", format(message, ...), "\n");
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
274 else
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
275 write(logfile, name, "\t" , level, "\t", message, "\n");
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
276 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
277 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
278 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
279
6779
6236668da30a core.*: Remove use of module() function
Kim Alvefur <zash@zash.se>
parents: 6719
diff changeset
280 local function register_sink_type(name, sink_maker)
1031
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
281 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
282 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
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parents: 1024
diff changeset
283 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
284 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
285
6779
6236668da30a core.*: Remove use of module() function
Kim Alvefur <zash@zash.se>
parents: 6719
diff changeset
286 return {
6236668da30a core.*: Remove use of module() function
Kim Alvefur <zash@zash.se>
parents: 6719
diff changeset
287 reload_logging = reload_logging;
6236668da30a core.*: Remove use of module() function
Kim Alvefur <zash@zash.se>
parents: 6719
diff changeset
288 register_sink_type = register_sink_type;
6236668da30a core.*: Remove use of module() function
Kim Alvefur <zash@zash.se>
parents: 6719
diff changeset
289 }