File

util/logger.lua @ 5915:e6fed1d80116

Back out 1b0ac7950129, as SSLv3 appears to still be in moderate use on the network. Also, although obsolete, SSLv3 isn't documented to have any weaknesses that TLS 1.0 (the most common version used today) doesn't also have. Get your act together clients!
author Matthew Wild <mwild1@gmail.com>
date Tue, 12 Nov 2013 02:13:01 +0000
parent 4937:b3fe52353295
child 5776:bd0ff8ae98a8
line wrap: on
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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 pcall = pcall;

local find = string.find;
local ipairs, pairs, setmetatable = ipairs, pairs, setmetatable;

module "logger"

local level_sinks = {};

local make_logger;

function init(name)
	local log_debug = make_logger(name, "debug");
	local log_info = make_logger(name, "info");
	local log_warn = make_logger(name, "warn");
	local log_error = make_logger(name, "error");

	return function (level, message, ...)
			if level == "debug" then
				return log_debug(message, ...);
			elseif level == "info" then
				return log_info(message, ...);
			elseif level == "warn" then
				return log_warn(message, ...);
			elseif level == "error" then
				return log_error(message, ...);
			end
		end
end

function make_logger(source_name, level)
	local level_handlers = level_sinks[level];
	if not level_handlers then
		level_handlers = {};
		level_sinks[level] = level_handlers;
	end

	local logger = function (message, ...)
		for i = 1,#level_handlers do
			level_handlers[i](source_name, level, message, ...);
		end
	end

	return logger;
end

function reset()
	for level, handler_list in pairs(level_sinks) do
		-- Clear all handlers for this level
		for i = 1, #handler_list do
			handler_list[i] = nil;
		end
	end
end

function add_level_sink(level, sink_function)
	if not level_sinks[level] then
		level_sinks[level] = { sink_function };
	else
		level_sinks[level][#level_sinks[level] + 1 ] = sink_function;
	end
end

_M.new = make_logger;

return _M;