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--
-- rhctl
--
-- Copyright (C) 2009-2014 Christian Pointner <equinox@helsinki.at>
--
-- 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/>.
--
package.path = package.path .. ';/usr/share/rhctl/?.lua'
socket = require("socket")
utils = require("utils")
old_state = {}
current_state = {}
function state_changed()
for k,v in pairs(old_state) do
if v ~= current_state[k] then
return true
end
end
for k,v in pairs(current_state) do
if old_state[k] == nil then
return true
end
end
return false
end
function process_cmd(message)
local exps = { hs = "^Health: (%a+)$", mc = "^Master: (%a+)$", sc = "^Standby: (%a+)$", hbm = "^Hearbeat Master: (%a+, %a+)$", hbs = "^Hearbeat Standby: (%a+, %a+)$" }
for key, exp in pairs(exps) do
local state = string.match(message, exp)
if(state) then
if(key == 'hs') then
current_state = {}
end
current_state[key] = state
end
end
if(current_state['hbs'] ~= nil) then
if(state_changed()) then
body = "RHCTL Health Output:\n\n"
body = body .. "Health: " .. current_state['hs'] .. "\n"
body = body .. "Master: " .. current_state['mc'] .. "\n"
body = body .. "Standby: " .. current_state['sc'] .. "\n"
body = body .. "Master Hearbeat: " .. current_state['hbm'] .. "\n"
body = body .. "Standby Hearbeat: " .. current_state['hbs'] .. "\n"
utils.send_mail("logs@helsinki.at", "[RHCTL] health: " .. current_state['hs'], body)
old_state = current_state
end
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 health");
cmd.send_string("health");
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 ~= 0) then break end
else
log.printf(log.ERROR, "select returned invalid handle??")
return_value = -1
break;
end
end
end
end
end
signal.stop()
return return_value
end
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