1日のCPU平均使用率をツイートする

system-cpu-log

#!/bin/bash

mpstat 1 1 | sed -n '4,4p' | awk '{ print $13 }' >> ~/ruby/cpu-log

twitter-system-cpu-bot.rb

# encoding: utf-8

require 'twitter'
require 'pp'

# conputing cpu average
ave = -1.0
count = -1
max = -1.0
logfile = Dir.home + '/ruby/cpu-log'
if File.exist?(logfile) then
  ave = 0.0
  count = 0
  max = 0.0
  File.open(logfile, "r:utf-8") do |f|
    while line = f.gets
      count += 1
      tmp = 100.0 - line.to_f
      ave += tmp
      if max < tmp then
        max = tmp
      end
    end
  end
  ave = ave / count
  # delete cpu-log
  File.unlink logfile
end

# construct tweet
value = `echo "[Server]"`
value << `date +"%Y年%m月%d日%H時%M分" | tr -d '\n'`
value << '取得，過去24時間のCPU使用率の平均は '
value << "%.2f" % ave
value << '% です（最高 '
value << "%.2f" % max
value << `echo "% ）"`

# connect Twitter
client = Twitter::REST::Client.new do |config|
  config.consumer_key = 'XXX'
  config.consumer_secret = 'XXX'
  config.access_token = 'XXX'
  config.access_token_secret = 'XXX'
end

# Tweet
client.update(value)