local LOG = require "log".new( -- maximum log level "trace", -- Writer require 'log.writer.list'.new( -- multi writers: require 'log.writer.console.color'.new(), -- * console color require 'log.writer.file.roll'.new( -- * roll files './logs', -- log dir 'events.log', -- current log name 10, -- count files 10*1024*1024 -- max file size in bytes ) ), -- Formatter require "log.formatter.concat".new() ) LOG.error("some", "error")

local LOG = require "log".new( require "log.writer.async.zmq".new( 'inproc://async.logger', function() -- calls from separate thread/Lua state return require 'log.writer.file.by_day'.new( './logs', 'events.log', 5000 ) end ) ) LOG.error("some error")

local host = arg[1] or '127.0.0.1' local port = arg[2] or 514 -- this code run in separate thread. local InitWriter = [[  return require 'log.writer.list'.new( -- multi writers:  require 'log.writer.console.color'.new(), -- * console color  require 'log.writer.net.zmq'.new('%{zmq_cnn_host}'), -- * zmq pub socket  require "log.writer.format".new( -- * syslog over udp  require "log.logformat.syslog".new("user"),  require 'log.writer.net.udp'.new('%{udp_cnn_host}', %{udp_cnn_port})  )  ) ]] -- create async writer and run new work thread. -- communicate with work thread using zmq library local writer = require "log.writer.async.zmq".new( 'inproc://async.logger', InitWriter:gsub('%%{(.-)}', { zmq_cnn_host = 'tcp://' .. host .. ':' .. port; udp_cnn_host = host; udp_cnn_port = port; }) ) -- create new logger local LOG = require"log".new(writer) require "socket".sleep(0.5) -- net.zmq need time to connect LOG.fatal("can not allocate memory") LOG.error("file not found") LOG.warning("cache server is not started") LOG.info("new message is received") LOG.notice("message has 2 file") print("Press enter ...") io.flush() io.read()

-- Buld writer with 2 destinations local writer = require "log.writer.list".new( require "log.writer.format".new( -- explicit set logformat to stdout writer require "log.logformat.default".new(), require "log.writer.stdout".new() ), -- define network writer. -- This writer has no explicit format so it will -- use one defined for logger. require "log.writer.net.udp".new('127.0.0.1', 514) ) local function SYSLOG_NEW(level, ...) return require "log".new(level, writer, require "log.formatter.mix".new(), require "log.logformat.syslog".new(...) ) end local SYSLOG = { -- Define first syslog logger with some settings KERN = SYSLOG_NEW('trace', 'kern'), -- Define second syslog logger with other settings USER = SYSLOG_NEW('trace', 'USER'), } SYSLOG.KERN.emerg ('emergency message') SYSLOG.USER.alert ('alert message')