2 -- Copyright (C) 2008-2010 Matthew Wild
3 -- Copyright (C) 2008-2010 Waqas Hussain
5 -- This project is MIT/X11 licensed. Please see the
6 -- COPYING file in the source package for more information.
10 local format, rep = string.format, string.rep;
13 local tostring, setmetatable, rawset, pairs, ipairs, type =
14 tostring, setmetatable, rawset, pairs, ipairs, type;
15 local io_open, io_write = io.open, io.write;
16 local math_max, rep = math.max, string.rep;
17 local os_date, os_getenv = os.date, os.getenv;
18 local getstyle, getstring = require "util.termcolours".getstyle, require "util.termcolours".getstring;
20 if os.getenv("__FLUSH_LOG") then
21 local io_flush = io.flush;
22 local _io_write = io_write;
23 io_write = function(...) _io_write(...); io_flush(); end
26 local config = require "core.configmanager";
27 local logger = require "util.logger";
28 local prosody = prosody;
30 local debug_mode = config.get("*", "core", "debug");
32 _G.log = logger.init("general");
34 module "loggingmanager"
36 -- The log config used if none specified in the config file (see reload_logging for initialization)
37 local default_logging;
38 local default_file_logging;
39 local default_timestamp = "%b %d %H:%M:%S";
40 -- The actual config loggingmanager is using
43 local apply_sink_rules;
44 local log_sink_types = setmetatable({}, { __newindex = function (t, k, v) rawset(t, k, v); apply_sink_rules(k); end; });
46 local logging_levels = { "debug", "info", "warn", "error", "critical" }
48 -- Put a rule into action. Requires that the sink type has already been registered.
49 -- This function is called automatically when a new sink type is added [see apply_sink_rules()]
50 local function add_rule(sink_config)
51 local sink_maker = log_sink_types[sink_config.to];
53 if sink_config.levels and not sink_config.source then
55 local sink = sink_maker(sink_config);
57 -- Set sink for all chosen levels
58 for level in pairs(get_levels(sink_config.levels)) do
59 logger.add_level_sink(level, sink);
61 elseif sink_config.source and not sink_config.levels then
62 logger.add_name_sink(sink_config.source, sink_maker(sink_config));
63 elseif sink_config.source and sink_config.levels then
64 local levels = get_levels(sink_config.levels);
65 local sink = sink_maker(sink_config);
66 logger.add_name_sink(sink_config.source,
67 function (name, level, ...)
69 return sink(name, level, ...);
75 local sink = sink_maker(sink_config);
77 -- Set sink for all levels
78 for _, level in pairs(logging_levels) do
79 logger.add_level_sink(level, sink);
87 -- Search for all rules using a particular sink type, and apply
88 -- them. Called automatically when a new sink type is added to
89 -- the log_sink_types table.
90 function apply_sink_rules(sink_type)
91 if type(logging_config) == "table" then
92 for _, sink_config in pairs(logging_config) do
93 if sink_config.to == sink_type then
94 add_rule(sink_config);
97 elseif type(logging_config) == "string" and (not logging_config:match("^%*")) and sink_type == "file" then
98 -- User specified simply a filename, and the "file" sink type
100 for _, sink_config in pairs(default_file_logging) do
101 sink_config.filename = logging_config;
102 add_rule(sink_config);
103 sink_config.filename = nil;
105 elseif type(logging_config) == "string" and logging_config:match("^%*(.+)") == sink_type then
106 -- Log all levels (debug+) to this sink
107 add_rule({ levels = { min = "debug" }, to = sink_type });
113 --- Helper function to get a set of levels given a "criteria" table
114 function get_levels(criteria, set)
116 if type(criteria) == "string" then
117 set[criteria] = true;
120 local min, max = criteria.min, criteria.max;
123 for _, level in ipairs(logging_levels) do
127 elseif max == level then
136 for _, level in ipairs(criteria) do
142 -- Initialize config, etc. --
143 function reload_logging()
144 local old_sink_types = {};
146 for name, sink_maker in pairs(log_sink_types) do
147 old_sink_types[name] = sink_maker;
148 log_sink_types[name] = nil;
153 default_logging = { { to = "console" , levels = { min = (debug_mode and "debug") or "info" } } };
154 default_file_logging = { { to = "file", levels = { min = (debug_mode and "debug") or "info" }, timestamps = true } };
155 default_timestamp = "%b %d %H:%M:%S";
157 logging_config = config.get("*", "core", "log") or default_logging;
160 for name, sink_maker in pairs(old_sink_types) do
161 log_sink_types[name] = sink_maker;
164 prosody.events.fire_event("logging-reloaded");
168 prosody.events.add_handler("config-reloaded", reload_logging);
170 --- Definition of built-in logging sinks ---
172 -- Null sink, must enter log_sink_types *first*
173 function log_sink_types.nowhere()
174 return function () return false; end;
177 -- Column width for "source" (used by stdout and console)
178 local sourcewidth = 20;
180 function log_sink_types.stdout()
181 local timestamps = config.timestamps;
183 if timestamps == true then
184 timestamps = default_timestamp; -- Default format
187 return function (name, level, message, ...)
188 sourcewidth = math_max(#name+2, sourcewidth);
189 local namelen = #name;
191 io_write(os_date(timestamps), " ");
194 io_write(name, rep(" ", sourcewidth-namelen), level, "\t", format(message, ...), "\n");
196 io_write(name, rep(" ", sourcewidth-namelen), level, "\t", message, "\n");
202 local do_pretty_printing = not os_getenv("WINDIR");
204 local logstyles = {};
205 if do_pretty_printing then
206 logstyles["info"] = getstyle("bold");
207 logstyles["warn"] = getstyle("bold", "yellow");
208 logstyles["error"] = getstyle("bold", "red");
210 function log_sink_types.console(config)
211 -- Really if we don't want pretty colours then just use plain stdout
212 if not do_pretty_printing then
213 return log_sink_types.stdout(config);
216 local timestamps = config.timestamps;
218 if timestamps == true then
219 timestamps = default_timestamp; -- Default format
222 return function (name, level, message, ...)
223 sourcewidth = math_max(#name+2, sourcewidth);
224 local namelen = #name;
227 io_write(os_date(timestamps), " ");
230 io_write(name, rep(" ", sourcewidth-namelen), getstring(logstyles[level], level), "\t", format(message, ...), "\n");
232 io_write(name, rep(" ", sourcewidth-namelen), getstring(logstyles[level], level), "\t", message, "\n");
238 local empty_function = function () end;
239 function log_sink_types.file(config)
240 local log = config.filename;
241 local logfile = io_open(log, "a+");
243 return empty_function;
245 local write, flush = logfile.write, logfile.flush;
247 prosody.events.add_handler("logging-reloading", function ()
253 local timestamps = config.timestamps;
255 if timestamps == nil or timestamps == true then
256 timestamps = default_timestamp; -- Default format
259 return function (name, level, message, ...)
261 write(logfile, os_date(timestamps), " ");
264 write(logfile, name, "\t", level, "\t", format(message, ...), "\n");
266 write(logfile, name, "\t" , level, "\t", message, "\n");
272 function register_sink_type(name, sink_maker)
273 local old_sink_maker = log_sink_types[name];
274 log_sink_types[name] = sink_maker;
275 return old_sink_maker;