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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.
--
-- luacheck: ignore 213/level
local pairs = pairs;
local _ENV = nil;
-- luacheck: std none
local level_sinks = {};
local make_logger;
local 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
local 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
local 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
local function add_simple_sink(simple_sink_function, levels)
local format = require "util.format".format;
local function sink_function(name, level, msg, ...)
return simple_sink_function(name, level, format(msg, ...));
end
for _, level in ipairs(levels or {"debug", "info", "warn", "error"}) do
add_level_sink(level, sink_function);
end
end
return {
init = init;
make_logger = make_logger;
reset = reset;
add_level_sink = add_level_sink;
add_simple_sink = add_simple_sink;
new = make_logger;
};
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