prosody
dba17a70fd22
core/loggingmanager.lua

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core/loggingmanager.lua @ 8720:dba17a70fd22

util.startup: Initialize prosody.log / _G.log here instead of in loggingmanager to reduce dependencies
author Kim Alvefur <zash@zash.se>
date Thu, 05 Apr 2018 17:52:37 +0200
parent 8693:6e24a69b03af
child 8721:b773b15fee71
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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 local _ENV = nil;
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24 -- luacheck: std none
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25
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26 -- The log config used if none specified in the config file (see reload_logging for initialization)
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27 local default_logging;
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28 local default_file_logging;
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29 local default_timestamp = "%b %d %H:%M:%S ";
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30 -- The actual config loggingmanager is using
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31 local logging_config;
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32
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33 local apply_sink_rules;
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34 local log_sink_types = setmetatable({}, { __newindex = function (t, k, v) rawset(t, k, v); apply_sink_rules(k); end; });
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35 local get_levels;
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36 local logging_levels = { "debug", "info", "warn", "error" }
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37
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38 -- Put a rule into action. Requires that the sink type has already been registered.
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39 -- This function is called automatically when a new sink type is added [see apply_sink_rules()]
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40 local function add_rule(sink_config)
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41 local sink_maker = log_sink_types[sink_config.to];
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42 if not sink_maker then
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43 return; -- No such sink type
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44 end
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45
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46 -- Create sink
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47 local sink = sink_maker(sink_config);
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48
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49 -- Set sink for all chosen levels
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50 for level in pairs(get_levels(sink_config.levels or logging_levels)) do
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51 logger.add_level_sink(level, sink);
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52 end
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53 end
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54
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55 -- Search for all rules using a particular sink type, and apply
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56 -- them. Called automatically when a new sink type is added to
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57 -- the log_sink_types table.
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58 function apply_sink_rules(sink_type)
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59 if type(logging_config) == "table" then
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60
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61 for _, level in ipairs(logging_levels) do
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62 if type(logging_config[level]) == "string" then
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63 local value = logging_config[level];
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64 if sink_type == "file" and not value:match("^%*") then
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65 add_rule({
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66 to = sink_type;
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67 filename = value;
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68 timestamps = true;
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69 levels = { min = level };
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70 });
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71 elseif value == "*"..sink_type then
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72 add_rule({
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73 to = sink_type;
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74 levels = { min = level };
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75 });
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76 end
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77 end
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78 end
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79
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80 for _, sink_config in ipairs(logging_config) do
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81 if (type(sink_config) == "table" and sink_config.to == sink_type) then
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82 add_rule(sink_config);
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83 elseif (type(sink_config) == "string" and sink_config:match("^%*(.+)") == sink_type) then
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84 add_rule({ levels = { min = "debug" }, to = sink_type });
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85 end
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86 end
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87 elseif type(logging_config) == "string" and (not logging_config:match("^%*")) and sink_type == "file" then
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88 -- User specified simply a filename, and the "file" sink type
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89 -- was just added
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90 for _, sink_config in pairs(default_file_logging) do
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91 sink_config.filename = logging_config;
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92 add_rule(sink_config);
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93 sink_config.filename = nil;
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94 end
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95 elseif type(logging_config) == "string" and logging_config:match("^%*(.+)") == sink_type then
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96 -- Log all levels (debug+) to this sink
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97 add_rule({ levels = { min = "debug" }, to = sink_type });
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98 end
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99 end
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100
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101
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102
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103 --- Helper function to get a set of levels given a "criteria" table
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104 function get_levels(criteria, set)
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105 set = set or {};
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106 if type(criteria) == "string" then
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107 set[criteria] = true;
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108 return set;
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109 end
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110 local min, max = criteria.min, criteria.max;
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111 if min or max then
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112 local in_range;
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113 for _, level in ipairs(logging_levels) do
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114 if min == level then
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115 set[level] = true;
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116 in_range = true;
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117 elseif max == level then
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118 set[level] = true;
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119 return set;
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120 elseif in_range then
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121 set[level] = true;
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122 end
1021
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123 end
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124 end
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125
1021
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126 for _, level in ipairs(criteria) do
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127 set[level] = true;
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128 end
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129 return set;
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130 end
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131
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132 -- Initialize config, etc. --
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133 local function reload_logging()
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134 local old_sink_types = {};
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135
3358
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diff changeset
136 for name, sink_maker in pairs(log_sink_types) do
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137 old_sink_types[name] = sink_maker;
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138 log_sink_types[name] = nil;
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139 end
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140
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141 logger.reset();
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142
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143 local debug_mode = config.get("*", "debug");
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144
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145 default_logging = { { to = "console" , levels = { min = (debug_mode and "debug") or "info" } } };
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146 default_file_logging = {
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147 { to = "file", levels = { min = (debug_mode and "debug") or "info" }, timestamps = true }
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148 };
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149
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150 logging_config = config.get("*", "log") or default_logging;
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151
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152 for name, sink_maker in pairs(old_sink_types) do
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153 log_sink_types[name] = sink_maker;
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154 end
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155
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diff changeset
156 prosody.events.fire_event("logging-reloaded");
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157 end
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parents: 3045
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158
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parents: 3045
diff changeset
159 reload_logging();
8693
6e24a69b03af loggingmanager: Hook event for reopening log files instead of config reloaded
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parents: 8555
diff changeset
160 prosody.events.add_handler("reopen-log-files", reload_logging);
3358
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161
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diff changeset
162 --- Definition of built-in logging sinks ---
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diff changeset
163
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b02290fd8a75 loggingmanager: Add a comment about 'nowhere' sink type
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164 -- Null sink, must enter log_sink_types *first*
7134
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165 local function log_to_nowhere()
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166 return function () return false; end;
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167 end
7134
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168 log_sink_types.nowhere = log_to_nowhere;
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169
7134
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170 local function log_to_file(sink_config, logfile)
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171 logfile = logfile or io_open(sink_config.filename, "a+");
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172 if not logfile then
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173 return log_to_nowhere(sink_config);
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174 end
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175 local write = logfile.write;
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176
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177 local timestamps = sink_config.timestamps;
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178
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179 if timestamps == true or timestamps == nil then
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180 timestamps = default_timestamp; -- Default format
7137
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181 elseif timestamps then
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182 timestamps = timestamps .. " ";
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183 end
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184
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diff changeset
185 if sink_config.buffer_mode ~= false then
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diff changeset
186 logfile:setvbuf(sink_config.buffer_mode or "line");
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diff changeset
187 end
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diff changeset
188
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189 -- Column width for "source" (used by stdout and console)
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190 local sourcewidth = sink_config.source_width;
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diff changeset
191
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192 if sourcewidth then
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193 return function (name, level, message, ...)
7135
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194 sourcewidth = math_max(#name+2, sourcewidth);
8227
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195 write(logfile, timestamps and os_date(timestamps) or "", name, rep(" ", sourcewidth-#name), level, "\t", format(message, ...), "\n");
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196 end
8227
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diff changeset
197 else
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diff changeset
198 return function (name, level, message, ...)
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diff changeset
199 write(logfile, timestamps and os_date(timestamps) or "", name, "\t", level, "\t", format(message, ...), "\n");
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diff changeset
200 end
7134
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201 end
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202 end
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diff changeset
203 log_sink_types.file = log_to_file;
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204
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diff changeset
205 local function log_to_stdout(sink_config)
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diff changeset
206 if not sink_config.timestamps then
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diff changeset
207 sink_config.timestamps = false;
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diff changeset
208 end
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Kim Alvefur <zash@zash.se>
parents: 7135
diff changeset
209 if sink_config.source_width == nil then
6c3a33e54399 loggingmanager: Make initial value for width of log name configurable
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diff changeset
210 sink_config.source_width = 20;
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diff changeset
211 end
7135
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parents: 7134
diff changeset
212 return log_to_file(sink_config, stdout);
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diff changeset
213 end
7134
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diff changeset
214 log_sink_types.stdout = log_to_stdout;
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diff changeset
215
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diff changeset
216 local do_pretty_printing = true;
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217
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diff changeset
218 local logstyles;
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diff changeset
219 if do_pretty_printing then
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diff changeset
220 logstyles = {};
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diff changeset
221 logstyles["info"] = getstyle("bold");
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diff changeset
222 logstyles["warn"] = getstyle("bold", "yellow");
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diff changeset
223 logstyles["error"] = getstyle("bold", "red");
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diff changeset
224 end
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diff changeset
225
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diff changeset
226 local function log_to_console(sink_config)
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diff changeset
227 -- Really if we don't want pretty colours then just use plain stdout
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diff changeset
228 local logstdout = log_to_stdout(sink_config);
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diff changeset
229 if not do_pretty_printing then
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diff changeset
230 return logstdout;
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231 end
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232 return function (name, level, message, ...)
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233 local logstyle = logstyles[level];
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234 if logstyle then
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235 level = getstring(logstyle, level);
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236 end
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237 return logstdout(name, level, message, ...);
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238 end
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239 end
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240 log_sink_types.console = log_to_console;
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241
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242 local function register_sink_type(name, sink_maker)
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243 local old_sink_maker = log_sink_types[name];
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244 log_sink_types[name] = sink_maker;
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245 return old_sink_maker;
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246 end
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247
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248 return {
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249 reload_logging = reload_logging;
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250 register_sink_type = register_sink_type;
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251 }