[fluksod] first commit for the born-again fluksod

mote/v2/openwrt/package/flukso/luasrc/fluksod.lua

@@ -0,0 +1,86 @@
+#! /usr/bin/env lua
+
+--[[
+    
+    fluksod.lua - Lua part of the Flukso daemon
+
+    Copyright (C) 2011 Bart Van Der Meerssche <bart.vandermeerssche@flukso.net>
+
+    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, either version 3 of the License, or
+    (at your option) any later version.
+
+    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/>.
+
+]]--
+
+
+local dbg   = require 'dbg'
+local nixio = require 'nixio'
+nixio.fs    = require 'nixio.fs'
+local uci   = require 'luci.model.uci'.cursor()
+
+local arg = arg or {} -- needed when this code is not loaded via the interpreter
+
+local DEBUG		= (arg[1] == '-d')
+
+local DAEMON 		= os.getenv('DAEMON') or 'fluksod'
+local DAEMON_PATH 	= os.getenv('DAEMON_PATH') or '/var/run/' .. DAEMON
+
+local DELTA_PATH	= '/var/run/spid/delta'
+local DELTA_PATH_IN	= DELTA_PATH .. '/in'
+local DELTA_PATH_OUT	= DELTA_PATH .. '/out'
+
+local O_RDWR		= nixio.open_flags('rdwr')
+local O_RDWR_NONBLOCK   = nixio.open_flags('rdwr', 'nonblock')
+local POLLIN            = nixio.poll_flags('in')
+
+-- parse and load /etc/config/flukso
+local FLUKSO		= uci:get_all('flukso')
+
+
+local delta = { fdin  = nixio.open(DELTA_PATH_IN, O_RDWR_NONBLOCK),
+                fdout = nixio.open(DELTA_PATH_OUT, O_RDWR) }
+
+if delta.fdin == nil or delta.fdout == nil then
+	-- TODO output to syslog
+	print('Error. Unable to open the delta fifos.')
+	print('Exiting...')
+	os.exit(1)
+end
+
+-- TODO acquire an exclusive lock on the delta fifos or exit
+
+function tolua(num)
+	return num + 1
+end
+
+for line in delta.fdout:linesource() do
+	print(line)
+
+	timestamp, data = line:match('^(%d+)%s+([%d%s]+)$')
+
+	for i, counter, extra in data:gmatch('(%d+)%s+(%d+)%s+(%d+)') do
+
+		-- map index(+1!) to sensor id and sensor type
+		local sensor_id = FLUKSO[tostring(tolua(i))]['id']
+		local sensor_type = FLUKSO[tostring(tolua(i))]['type']
+
+		print(sensor_id, sensor_type, counter, extra)
+
+		-- resume both branches
+		-- check in the e branch whether the counter has increased, if not then discard
+		-- chech in both branches whether timestamp has increased
+		-- or do we override??
+	end 
+end
+
+
+