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prosody
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core/loggingmanager.lua @ 3130:80e630e60f06
mod_pep: Use is_contact_subscribed (which uses the new rostermanager fix to avoid unnecessary roster loads)
author | Matthew Wild <mwild1@gmail.com> |
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date | Tue, 01 Jun 2010 20:10:17 +0100 |
parent | 3045:ff5b3932e5f2 |
child | 3358:b5a812cf698c |
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-- Prosody IM -- Copyright (C) 2008-2010 Matthew Wild -- Copyright (C) 2008-2010 Waqas Hussain -- -- This project is MIT/X11 licensed. Please see the -- COPYING file in the source package for more information. -- local format, rep = string.format, string.rep; local pcall = pcall; local debug = debug; local tostring, setmetatable, rawset, pairs, ipairs, type = tostring, setmetatable, rawset, pairs, ipairs, type; local io_open, io_write = io.open, io.write; local math_max, rep = math.max, string.rep; local os_date, os_getenv = os.date, os.getenv; local getstyle, getstring = require "util.termcolours".getstyle, require "util.termcolours".getstring; if os.getenv("__FLUSH_LOG") then local io_flush = io.flush; local _io_write = io_write; io_write = function(...) _io_write(...); io_flush(); end end local config = require "core.configmanager"; local eventmanager = require "core.eventmanager"; local logger = require "util.logger"; local debug_mode = config.get("*", "core", "debug"); _G.log = logger.init("general"); module "loggingmanager" -- The log config used if none specified in the config file local default_logging = { { to = "console" , levels = { min = (debug_mode and "debug") or "info" } } }; local default_file_logging = { { to = "file", levels = { min = (debug_mode and "debug") or "info" }, timestamps = true } }; local default_timestamp = "%b %d %H:%M:%S"; -- The actual config loggingmanager is using local logging_config = config.get("*", "core", "log") or default_logging; local apply_sink_rules; local log_sink_types = setmetatable({}, { __newindex = function (t, k, v) rawset(t, k, v); apply_sink_rules(k); end; }); local get_levels; local logging_levels = { "debug", "info", "warn", "error", "critical" } -- Put a rule into action. Requires that the sink type has already been registered. -- This function is called automatically when a new sink type is added [see apply_sink_rules()] local function add_rule(sink_config) local sink_maker = log_sink_types[sink_config.to]; if sink_maker then if sink_config.levels and not sink_config.source then -- Create sink local sink = sink_maker(sink_config); -- Set sink for all chosen levels for level in pairs(get_levels(sink_config.levels)) do logger.add_level_sink(level, sink); end elseif sink_config.source and not sink_config.levels then logger.add_name_sink(sink_config.source, sink_maker(sink_config)); elseif sink_config.source and sink_config.levels then local levels = get_levels(sink_config.levels); local sink = sink_maker(sink_config); logger.add_name_sink(sink_config.source, function (name, level, ...) if levels[level] then return sink(name, level, ...); end end); else -- All sources -- Create sink local sink = sink_maker(sink_config); -- Set sink for all levels for _, level in pairs(logging_levels) do logger.add_level_sink(level, sink); end end else -- No such sink type end end -- Search for all rules using a particular sink type, and apply -- them. Called automatically when a new sink type is added to -- the log_sink_types table. function apply_sink_rules(sink_type) if type(logging_config) == "table" then for _, sink_config in pairs(logging_config) do if sink_config.to == sink_type then add_rule(sink_config); end end elseif type(logging_config) == "string" and (not logging_config:match("^%*")) and sink_type == "file" then -- User specified simply a filename, and the "file" sink type -- was just added for _, sink_config in pairs(default_file_logging) do sink_config.filename = logging_config; add_rule(sink_config); sink_config.filename = nil; end elseif type(logging_config) == "string" and logging_config:match("^%*(.+)") == sink_type then -- Log all levels (debug+) to this sink add_rule({ levels = { min = "debug" }, to = sink_type }); end end --- Helper function to get a set of levels given a "criteria" table function get_levels(criteria, set) set = set or {}; if type(criteria) == "string" then set[criteria] = true; return set; end local min, max = criteria.min, criteria.max; if min or max then local in_range; for _, level in ipairs(logging_levels) do if min == level then set[level] = true; in_range = true; elseif max == level then set[level] = true; return set; elseif in_range then set[level] = true; end end end for _, level in ipairs(criteria) do set[level] = true; end return set; end --- Definition of built-in logging sinks --- -- Null sink, must enter log_sink_types *first* function log_sink_types.nowhere() return function () return false; end; end -- Column width for "source" (used by stdout and console) local sourcewidth = 20; function log_sink_types.stdout() local timestamps = config.timestamps; if timestamps == true then timestamps = default_timestamp; -- Default format end return function (name, level, message, ...) sourcewidth = math_max(#name+2, sourcewidth); local namelen = #name; if timestamps then io_write(os_date(timestamps), " "); end if ... then io_write(name, rep(" ", sourcewidth-namelen), level, "\t", format(message, ...), "\n"); else io_write(name, rep(" ", sourcewidth-namelen), level, "\t", message, "\n"); end end end do local do_pretty_printing = not os_getenv("WINDIR"); local logstyles = {}; if do_pretty_printing then logstyles["info"] = getstyle("bold"); logstyles["warn"] = getstyle("bold", "yellow"); logstyles["error"] = getstyle("bold", "red"); end function log_sink_types.console(config) -- Really if we don't want pretty colours then just use plain stdout if not do_pretty_printing then return log_sink_types.stdout(config); end local timestamps = config.timestamps; if timestamps == true then timestamps = default_timestamp; -- Default format end return function (name, level, message, ...) sourcewidth = math_max(#name+2, sourcewidth); local namelen = #name; if timestamps then io_write(os_date(timestamps), " "); end if ... then io_write(name, rep(" ", sourcewidth-namelen), getstring(logstyles[level], level), "\t", format(message, ...), "\n"); else io_write(name, rep(" ", sourcewidth-namelen), getstring(logstyles[level], level), "\t", message, "\n"); end end end end local empty_function = function () end; function log_sink_types.file(config) local log = config.filename; local logfile = io_open(log, "a+"); if not logfile then return empty_function; end local write, flush = logfile.write, logfile.flush; eventmanager.add_event_hook("reopen-log-files", function () if logfile then logfile:close(); end logfile = io_open(log, "a+"); if not logfile then write, flush = empty_function, empty_function; else write, flush = logfile.write, logfile.flush; end end); local timestamps = config.timestamps; if timestamps == nil or timestamps == true then timestamps = default_timestamp; -- Default format end return function (name, level, message, ...) if timestamps then write(logfile, os_date(timestamps), " "); end if ... then write(logfile, name, "\t", level, "\t", format(message, ...), "\n"); else write(logfile, name, "\t" , level, "\t", message, "\n"); end flush(logfile); end; end function register_sink_type(name, sink_maker) local old_sink_maker = log_sink_types[name]; log_sink_types[name] = sink_maker; return old_sink_maker; end return _M;