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#!/usr/bin/lua
--
-- send now and next cart# and length to nopsyncd
-- this script should be called by the now/next macro cart
-- the arguments should be: now# nowlen next# nextlen
--
local queue_name = "/rhnop"
mq = require "luamq"
-- reading timestamp (milliseconds since epoch)
local p = assert(io.popen("/bin/date --utc '+%s %N'" , 'r'))
local time = assert(p:read('*l'))
p:close()
local s, ns = assert(string.match(time, "([0-9]+) ([0-9]+)"))
local timestamp = s*1000 + math.floor(ns/1000000)
-- check arguments
if #arg < 4 then
io.stderr:write("too few parameters\n")
os.exit(1)
end
-- open message queue
local q, err = mq.create(queue_name, "wo")
if q == nil then
io.stderr:write("creation of message queue failed: " .. err .. "\n")
os.exit(1)
end
-- send out message to nopsyncd
local result, err = mq.send(q, timestamp .. " " .. arg[1] .. " " .. arg[2] .. " " .. arg[3] .. " " .. arg[4], 0)
if result == nil then
io.stderr:write("sending message failed: " .. err .. "\n")
os.exit(2)
end
mq.close(q)
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