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core/loggingmanager.lua

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core/loggingmanager.lua @ 13270:14bbfb2cc8dd default tip

lint: Teach luacheck about module:once Silence warning for using this introduced in 9c62ffbdf2ae
author Kim Alvefur <zash@zash.se>
date Sun, 15 Oct 2023 16:43:14 +0200
parent 12972:ead41e25ebc0
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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 local format = require "prosody.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 "prosody.util.termcolours".getstyle, require "prosody.util.termcolours".getstring;
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17 local st = require "prosody.util.stanza";
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18
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19 local config = require "prosody.core.configmanager";
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20 local logger = require "prosody.util.logger";
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21
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22 local have_pposix, pposix = pcall(require, "prosody.util.pposix");
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23 have_pposix = have_pposix and pposix._VERSION == "0.4.0";
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24
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25 local _ENV = nil;
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26 -- luacheck: std none
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27
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28 -- The log config used if none specified in the config file (see reload_logging for initialization)
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29 local default_logging;
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30 local default_file_logging;
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31 local default_timestamp = "%b %d %H:%M:%S ";
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32 -- The actual config loggingmanager is using
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33 local logging_config;
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34
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35 local apply_sink_rules;
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36 local log_sink_types = setmetatable({}, { __newindex = function (t, k, v) rawset(t, k, v); apply_sink_rules(k); end; });
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37 local get_levels;
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38 local logging_levels = { "debug", "info", "warn", "error" }
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39
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40 local function id(x) return x end
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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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diff changeset
122 set[level] = true;
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diff changeset
123 return set;
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parents: 1016
diff changeset
124 elseif in_range then
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diff changeset
125 set[level] = true;
2586
26ead5e16cd3 loggingmanager: Trailing whitespace
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parents: 2139
diff changeset
126 end
1021
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diff changeset
127 end
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diff changeset
128 end
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diff changeset
129
1021
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diff changeset
130 for _, level in ipairs(criteria) do
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diff changeset
131 set[level] = true;
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diff changeset
132 end
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133 return set;
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diff changeset
134 end
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diff changeset
135
3358
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diff changeset
136 -- Initialize config, etc. --
6779
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diff changeset
137 local function reload_logging()
3358
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diff changeset
138 local old_sink_types = {};
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diff changeset
139
3358
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diff changeset
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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diff changeset
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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diff changeset
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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diff changeset
152 };
3358
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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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parents: 3045
diff changeset
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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diff changeset
158 end
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parents: 3045
diff changeset
159 end
b5a812cf698c loggingmanager: Add reload_logging() method, which gets called on any config reload, to reset util.logger and remove and re-add all sink types to perform a full reload of the logging system without a restart.
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diff changeset
160
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diff changeset
161 --- Definition of built-in logging sinks ---
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diff changeset
162
1080
b02290fd8a75 loggingmanager: Add a comment about 'nowhere' sink type
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diff changeset
163 -- Null sink, must enter log_sink_types *first*
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164 local function log_to_nowhere()
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165 return function () return false; end;
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parents: 1024
diff changeset
166 end
7134
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diff changeset
167 log_sink_types.nowhere = log_to_nowhere;
1031
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diff changeset
168
7134
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diff changeset
169 local function log_to_file(sink_config, logfile)
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170 logfile = logfile or io_open(sink_config.filename, "a+");
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diff changeset
171 if not logfile then
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172 return log_to_nowhere(sink_config);
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173 end
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diff changeset
174 local write = logfile.write;
1031
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diff changeset
175
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diff changeset
176 local timestamps = sink_config.timestamps;
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177
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diff changeset
178 if timestamps == true or timestamps == nil then
1078
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179 timestamps = default_timestamp; -- Default format
7137
4a5619a87b44 loggingmanager: Write out timestamps in same write() call as everything else
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180 elseif timestamps then
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181 timestamps = timestamps .. " ";
1078
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diff changeset
182 end
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183
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diff changeset
184 if sink_config.buffer_mode ~= false then
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parents: 7006
diff changeset
185 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.
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parents: 7006
diff changeset
186 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.
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parents: 7006
diff changeset
187
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diff changeset
188 -- Column width for "source" (used by stdout and console)
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parents: 7134
diff changeset
189 local sourcewidth = sink_config.source_width;
11641
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diff changeset
190 local filter = sink_config.filter or id;
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diff changeset
191
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diff changeset
192 if sourcewidth then
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parents: 8226
diff changeset
193 return function (name, level, message, ...)
7135
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diff changeset
194 sourcewidth = math_max(#name+2, sourcewidth);
11641
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parents: 9927
diff changeset
195 write(logfile, timestamps and os_date(timestamps) or "", name, rep(" ", sourcewidth-#name), level, "\t", filter(format(message, ...)), "\n");
7135
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parents: 7134
diff changeset
196 end
8227
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parents: 8226
diff changeset
197 else
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parents: 8226
diff changeset
198 return function (name, level, message, ...)
11641
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parents: 9927
diff changeset
199 write(logfile, timestamps and os_date(timestamps) or "", name, "\t", level, "\t", filter(format(message, ...)), "\n");
8227
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parents: 8226
diff changeset
200 end
7134
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diff changeset
201 end
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parents: 7133
diff changeset
202 end
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diff changeset
203 log_sink_types.file = log_to_file;
b7b6b1d01224 loggingmanager: Refactor the console log sink to re-use the stdout sink which in turn uses the file sink (tailcalls!)
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parents: 7133
diff changeset
204
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Kim Alvefur <zash@zash.se>
parents: 7133
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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parents: 7133
diff changeset
207 sink_config.timestamps = false;
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parents: 7133
diff changeset
208 end
7136
6c3a33e54399 loggingmanager: Make initial value for width of log name configurable
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
Kim Alvefur <zash@zash.se>
parents: 7135
diff changeset
210 sink_config.source_width = 20;
6c3a33e54399 loggingmanager: Make initial value for width of log name configurable
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parents: 7135
diff changeset
211 end
7135
0b614b7333f1 loggingmanager: Move logic for adaptive column width into file sink, append tab if disabled (fixes separation between name and level in plain file sinks)
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parents: 7134
diff changeset
212 return log_to_file(sink_config, stdout);
1031
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parents: 1024
diff changeset
213 end
7134
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Kim Alvefur <zash@zash.se>
parents: 7133
diff changeset
214 log_sink_types.stdout = log_to_stdout;
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
diff changeset
215
11657
46fa1b939e88 core.loggingmanager: Disable pretty printing when not connected to a tty
Kim Alvefur <zash@zash.se>
parents: 11643
diff changeset
216 local do_pretty_printing = not have_pposix or pposix.isatty(stdout);
7134
b7b6b1d01224 loggingmanager: Refactor the console log sink to re-use the stdout sink which in turn uses the file sink (tailcalls!)
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parents: 7133
diff changeset
217
11643
f534eeee1552 core.loggingmanager: Pretty-print logged XML snippets in console
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parents: 11641
diff changeset
218 local logstyles, pretty;
7134
b7b6b1d01224 loggingmanager: Refactor the console log sink to re-use the stdout sink which in turn uses the file sink (tailcalls!)
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parents: 7133
diff changeset
219 if do_pretty_printing then
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
diff changeset
220 logstyles = {};
b7b6b1d01224 loggingmanager: Refactor the console log sink to re-use the stdout sink which in turn uses the file sink (tailcalls!)
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parents: 7133
diff changeset
221 logstyles["info"] = getstyle("bold");
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Kim Alvefur <zash@zash.se>
parents: 7133
diff changeset
222 logstyles["warn"] = getstyle("bold", "yellow");
b7b6b1d01224 loggingmanager: Refactor the console log sink to re-use the stdout sink which in turn uses the file sink (tailcalls!)
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parents: 7133
diff changeset
223 logstyles["error"] = getstyle("bold", "red");
11643
f534eeee1552 core.loggingmanager: Pretty-print logged XML snippets in console
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parents: 11641
diff changeset
224
f534eeee1552 core.loggingmanager: Pretty-print logged XML snippets in console
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parents: 11641
diff changeset
225 pretty = st.pretty_print;
7134
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diff changeset
226 end
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parents: 7133
diff changeset
227
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
diff changeset
228 local function log_to_console(sink_config)
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Kim Alvefur <zash@zash.se>
parents: 7133
diff changeset
229 -- Really if we don't want pretty colours then just use plain stdout
12247
dcad8940f072 core.loggingmanager: Add FIXME about supporting console logging to stderr
Kim Alvefur <zash@zash.se>
parents: 11657
diff changeset
230 -- FIXME refactor to allow console logging with colours on stderr
11643
f534eeee1552 core.loggingmanager: Pretty-print logged XML snippets in console
Kim Alvefur <zash@zash.se>
parents: 11641
diff changeset
231 if not do_pretty_printing then
f534eeee1552 core.loggingmanager: Pretty-print logged XML snippets in console
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parents: 11641
diff changeset
232 return log_to_stdout(sink_config);
f534eeee1552 core.loggingmanager: Pretty-print logged XML snippets in console
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parents: 11641
diff changeset
233 end
f534eeee1552 core.loggingmanager: Pretty-print logged XML snippets in console
Kim Alvefur <zash@zash.se>
parents: 11641
diff changeset
234 sink_config.filter = pretty;
7134
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
diff changeset
235 local logstdout = log_to_stdout(sink_config);
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
diff changeset
236 return function (name, level, message, ...)
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
diff changeset
237 local logstyle = logstyles[level];
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
diff changeset
238 if logstyle then
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
diff changeset
239 level = getstring(logstyle, level);
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
diff changeset
240 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
diff changeset
241 return logstdout(name, level, message, ...);
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
diff changeset
242 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
diff changeset
243 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
diff changeset
244 log_sink_types.console = log_to_console;
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
245
9927
1460c4966262 loggingmanager, mod_posix: Move syslog to core, fixes #541 (in a way)
Matthew Wild <mwild1@gmail.com>
parents: 9925
diff changeset
246 if have_pposix then
1460c4966262 loggingmanager, mod_posix: Move syslog to core, fixes #541 (in a way)
Matthew Wild <mwild1@gmail.com>
parents: 9925
diff changeset
247 local syslog_opened;
1460c4966262 loggingmanager, mod_posix: Move syslog to core, fixes #541 (in a way)
Matthew Wild <mwild1@gmail.com>
parents: 9925
diff changeset
248 local function log_to_syslog(sink_config) -- luacheck: ignore 212/sink_config
1460c4966262 loggingmanager, mod_posix: Move syslog to core, fixes #541 (in a way)
Matthew Wild <mwild1@gmail.com>
parents: 9925
diff changeset
249 if not syslog_opened then
1460c4966262 loggingmanager, mod_posix: Move syslog to core, fixes #541 (in a way)
Matthew Wild <mwild1@gmail.com>
parents: 9925
diff changeset
250 local facility = sink_config.syslog_facility or config.get("*", "syslog_facility");
1460c4966262 loggingmanager, mod_posix: Move syslog to core, fixes #541 (in a way)
Matthew Wild <mwild1@gmail.com>
parents: 9925
diff changeset
251 pposix.syslog_open(sink_config.syslog_name or "prosody", facility);
1460c4966262 loggingmanager, mod_posix: Move syslog to core, fixes #541 (in a way)
Matthew Wild <mwild1@gmail.com>
parents: 9925
diff changeset
252 syslog_opened = true;
1460c4966262 loggingmanager, mod_posix: Move syslog to core, fixes #541 (in a way)
Matthew Wild <mwild1@gmail.com>
parents: 9925
diff changeset
253 end
1460c4966262 loggingmanager, mod_posix: Move syslog to core, fixes #541 (in a way)
Matthew Wild <mwild1@gmail.com>
parents: 9925
diff changeset
254 local syslog = pposix.syslog_log;
1460c4966262 loggingmanager, mod_posix: Move syslog to core, fixes #541 (in a way)
Matthew Wild <mwild1@gmail.com>
parents: 9925
diff changeset
255 return function (name, level, message, ...)
1460c4966262 loggingmanager, mod_posix: Move syslog to core, fixes #541 (in a way)
Matthew Wild <mwild1@gmail.com>
parents: 9925
diff changeset
256 syslog(level, name, format(message, ...));
1460c4966262 loggingmanager, mod_posix: Move syslog to core, fixes #541 (in a way)
Matthew Wild <mwild1@gmail.com>
parents: 9925
diff changeset
257 end;
1460c4966262 loggingmanager, mod_posix: Move syslog to core, fixes #541 (in a way)
Matthew Wild <mwild1@gmail.com>
parents: 9925
diff changeset
258 end
1460c4966262 loggingmanager, mod_posix: Move syslog to core, fixes #541 (in a way)
Matthew Wild <mwild1@gmail.com>
parents: 9925
diff changeset
259 log_sink_types.syslog = log_to_syslog;
1460c4966262 loggingmanager, mod_posix: Move syslog to core, fixes #541 (in a way)
Matthew Wild <mwild1@gmail.com>
parents: 9925
diff changeset
260 end
1460c4966262 loggingmanager, mod_posix: Move syslog to core, fixes #541 (in a way)
Matthew Wild <mwild1@gmail.com>
parents: 9925
diff changeset
261
6779
6236668da30a core.*: Remove use of module() function
Kim Alvefur <zash@zash.se>
parents: 6719
diff changeset
262 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
263 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
264 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
265 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
266 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
267
6779
6236668da30a core.*: Remove use of module() function
Kim Alvefur <zash@zash.se>
parents: 6719
diff changeset
268 return {
6236668da30a core.*: Remove use of module() function
Kim Alvefur <zash@zash.se>
parents: 6719
diff changeset
269 reload_logging = reload_logging;
6236668da30a core.*: Remove use of module() function
Kim Alvefur <zash@zash.se>
parents: 6719
diff changeset
270 register_sink_type = register_sink_type;
6236668da30a core.*: Remove use of module() function
Kim Alvefur <zash@zash.se>
parents: 6719
diff changeset
271 }