sensu + grafana で、hipchatにグラフ画像投下するやつ

grafana-image-handler.json

{
  "handlers": {
    "hipchat": {
      "type": "pipe",
      "command": "/etc/sensu/handlers/hipchat.rb"
    },
    "grafana-image": {
      "type": "pipe",
      "command": "/etc/sensu/handlers/grafana-image.rb"
    }
  },
  "hipchat": {
    "apikey": "HipchatのAPIキー",
    "apiversion": "v2",
    "room": "ルームID",
    "from": "Sensu（ここは適当に）"
  },
  "grafana": {
    "grafana_url": "GrafanaのURL（最後/で終えてください・・・）",
    "db_name": "DBの名前",
    "panel_id": "パネルID",
    "from_time": "now-1h",
    "to_time": "now"
  },
  "aws-s3": {
    "region": "ap-northeast-1",
    "bucket": "バケット名",
    "access_key_id": "↑のバケットにputできるユーザのアクセスキーID",
    "secret_access_key": "シークレットアクセスキー"
  }
}

grafana-image.rb

#!/usr/bin/env ruby

require 'rubygems'
require 'aws-sdk'
require 'open-uri'
require 'hipchat'
require 'sensu-handler'

class GrafanaImage < Sensu::Handler

  def handle
    json_config = config[:json_config] || 'hipchat'
    server_url = settings[json_config]["server_url"] || 'https://api.hipchat.com'
    apiversion = settings[json_config]["apiversion"] || 'v1'
    proxy_url = settings[json_config]["proxy_url"]
    hipchat = HipChat::Client.new(settings[json_config]["apikey"], :api_version => apiversion, :http_proxy => proxy_url, :server_url => server_url)
    room = settings[json_config]["room"]
    from = settings[json_config]["from"] || 'Sensu'

    grafana_url = settings['grafana']['grafana_url']
    db_name     = settings['grafana']['db_name']
    panel_id    = settings['grafana']['panel_id']
    from_time   = settings['grafana']['from_time']
    to_time     = settings['grafana']['to_time']

    region = settings['aws-s3']['region']
    bucket = settings['aws-s3']['bucket']
    access_key_id = settings['aws-s3']['access_key_id']
    secret_access_key = settings['aws-s3']['secret_access_key']

    png = open("#{grafana_url}render/dashboard/solo/db/#{db_name}?panelId=#{panel_id}&fullscreen&from=#{from_time}&to=#{to_time}")

    Aws.config.update(
	  region: region,
	  credentials: Aws::Credentials.new(access_key_id, secret_access_key)
	)

    s3 = Aws::S3::Client.new
    key = "loadavg-#{Time.now.strftime('%Y%m%d-%H%M%S')}.png" # TODO: fix name
    s3.put_object(
	  bucket: bucket,
	  key: key,
	  body: png.read,
	  content_type: 'image/png'
	)

    url = "https://s3-#{region}.amazonaws.com/#{bucket}/#{key}"

    hipchat[room].send(from, url, message_format: 'text')
  end
end