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--
-- rhctl
--
-- Copyright (C) 2009 Christian Pointner <equinox@spreadspace.org>
--
-- This file is part of rhctl.
--
-- rhctl 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
-- any later version.
--
-- rhctl 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 rhctl. If not, see <http://www.gnu.org/licenses/>.
--
socket = require("socket")
function set_master_led()
os.execute("/sbin/led.sh set master")
os.execute("/sbin/led.sh clear standby")
end
function set_standby_led()
os.execute("/sbin/led.sh clear master")
os.execute("/sbin/led.sh set standby")
end
function clear_leds()
os.execute("/sbin/led.sh clear master")
os.execute("/sbin/led.sh clear standby")
end
function send_mail(address, subject, bodytext)
local fp = assert(io.popen("/usr/sbin/mini_sendmail -smailrelay -fnoreply@helsinki.at " .. address, "w"))
fp:write("Subject: " .. subject .. "\n")
fp:write("To: " .. address .. "\n")
fp:write("\n")
fp:write(bodytext)
fp:write("\n")
fp:close()
end
current_mode = "master"
function process_cmd(message)
log.printf(log.DEBUG, "received message: '%s'", message)
local new_mode = nil
local exps = { "Current Mode: (%a+)", "new Mode: (%a+)" }
for _, exp in ipairs(exps) do
new_mode = string.match(message, exp)
if(new_mode) then
new_mode = string.lower(new_mode)
if(new_mode == "master") then
set_master_led()
break
else
if(new_mode == "standby") then
set_standby_led()
break
end
end
end
end
if(new_mode and new_mode ~= current_mode) then
log.printf(log.NOTICE, "mode is now " .. new_mode)
send_mail("logs@helsinki.at", "RHCTL mode changed to " .. new_mode,
"RHCTL just switched from " .. current_mode .. " to " .. new_mode)
current_mode = new_mode
end
return 0
end
function main_loop(opt)
log.printf(log.NOTICE, "main_loop started")
local sig = signal.init()
local cmdfd = cmd.init()
cmd.send_string("listen mode");
cmd.send_string("status");
clear_leds()
local return_value = 0
while return_value == 0 do
local readable, _, err = socket.select({ sig , cmdfd }, nil)
if(err) then
log.printf(log.ERROR, "select returned with error: %s", err)
return_value = -1
else
for _, input in ipairs(readable) do
if(input == sig) then
return_value = signal.handle()
if(return_value == 1) then break end
else
if(input == cmdfd) then
return_value = cmd.recv_data(process_cmd)
if(return_value == 2) then
log.printf(log.ERROR, "connection to server lost, exitting")
return_value = -1
end
if(return_value ~= 0) then break end
else
log.printf(log.ERROR, "select returned invalid handle??")
return_value = -1
break;
end
end
end
end
end
clear_leds()
signal.stop()
return return_value
end
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