Lua on RTX1210 (4) - ハードウェア監視

検証環境

RTX1210 BootROM Ver. 1.04
RTX1210 FlashROM Table Ver. 1.00
RTX1210 Rev.14.01.38 (Fri Jul 10 09:41:02 2020)

前提

• strict.lua の導入が終わっている
• slack.lua 、 json.lua の導入が終わっている

注意事項

このスクリプトだけは Shift-JIS で保存しなければならない。
pattern = "筐体内温度%(℃%): (%d+)" が拾えない、Slackへのペイロードが空になるなどの不具合が起きる。

monitor_hardware.lua

monitor_hardware.lua

--
-- monitor_hardware.lua (Shift-JIS)
-- Hardware monitoring
--

require "strict"
local slack = require "slack"

local idle_time = 43200 -- = 60 * 60 * 12 [s]

local function log(priority, message)
  if priority == "DEBUG" then
    rt.syslog("notice", message)
  else
    rt.syslog("info", message)
    slack.post(priority, message)
  end
end

local resource_table = {
  cpu_5sec = { index = 1, pattern = "(%d+)%%%(5sec%)", name = "CPU(5sec)", unit = "%" }, -- (1)
  cpu_1min = { index = 2, pattern = "(%d+)%%%(1min%)", name = "CPU(1min)", unit = "%" },
  cpu_5min = { index = 3, pattern = "(%d+)%%%(5min%)", name = "CPU(5min)", unit = "%" },
  memory = { index = 4, pattern = "(%d+)%% used", name = "Memory", unit = "%" },
  packet_small = { index = 5, pattern = "(%d+)%%%(small%)", name = "Packet Buffer(small)", unit = "%" },
  packet_middle = { index = 6, pattern = "(%d+)%%%(middle%)", name = "Packet Buffer(middle)", unit = "%" },
  packet_large = { index = 7, pattern = "(%d+)%%%(large%)", name = "Packet Buffer(large)", unit = "%" },
  packet_huge = { index = 8, pattern = "(%d+)%%%(huge%)", name = "Packet Buffer(huge)", unit = "%" },
  temp = { index = 9, pattern = "筐体内温度%(℃%): (%d+)", name = "Temperature", unit = "C" }
}

local function rt_res_status()
  local cmd = "show environment"
  local rtn, str = rt.command(cmd)
  local rtn_table = {}
  local rtn_message = ""
  if rtn and str then
    for k, v in pairs(resource_table) do
      local value = str:match(v.pattern)
      if value then
        rtn_table[v.index] = v.name .. ": " .. value .. v.unit
      end
    end
    for i, v in ipairs(rtn_table) do
      rtn_message = rtn_message .. " " .. v
    end
    return rtn, rtn_message
  end
end

while true do
  local rtn, rtn_message = rt_res_status()
  if rtn then
    print(rtn_message) -- for DEBUG
    log("info", "(monitor_hardware.lua) " .. rtn_message)
  else
    log("info", "(monitor_hardware.lua) Failed to get environment information.")
  end
	rt.sleep(idle_time)
end

(1): pairs() が順序保証しないことに気づくまでしばらくハマった。

スケジュール

起動時に実行するよう設定。

schedule at 2 startup * lua /lua/monitor_hardware.lua

最終回予告

No-IP DDNSを定時更新してみる。