aredn/files/usr/lib/lua/aredn/log.lua

86 lines
2.3 KiB
Lua

--[[
Part of AREDN -- Used for creating Amateur Radio Emergency Data Networks
Copyright (C) 2021 Tim Wilkinson
See Contributors file for additional contributors
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation version 3 of the License.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
Additional Terms:
Additional use restrictions exist on the AREDN(TM) trademark and logo.
See AREDNLicense.txt for more info.
Attributions to the AREDN Project must be retained in the source code.
If importing this code into a new or existing project attribution
to the AREDN project must be added to the source code.
You must not misrepresent the origin of the material contained within.
Modified versions must be modified to attribute to the original source
and be marked in reasonable ways as differentiate it from the original
version
--]]
local log = {}
log.__index = log
function log.open(name, maxsize)
local l = {}
setmetatable(l, log)
l.logfile = name
l.logmax = maxsize
l.logf = nil
l.prefix = nil
return l
end
function log:write(str)
if not self.logf then
self.logf = io.open(self.logfile, "a")
end
local pstr = ""
if self.prefix then
pstr = self.prefix .. ": "
end
self.logf:write(string.format("%s: %s%s\n", os.date("%m/%d %H:%M:%S", os.time()), pstr, str))
if self.logf:seek() > self.logmax then
self:flush(true)
end
end
function log:flush(archive)
if self.logf then
self.logf:close()
self.logf = nil
if archive then
local old = self.logfile .. '.0'
if nixio.fs.stat(old) then
os.remove(old)
end
os.rename(self.logfile, old)
end
end
end
function log:close()
self:flush()
end
if not aredn then
aredn = {}
end
aredn.log = log
return log