Mackerel向けOpenStack snapshotチェック用のスクリプト

image_check.rb

#!/usr/bin/env ruby
# -*- coding: utf-8 -*-

require 'httpclient'
require 'json'

class Nova
  def keystone
    auth_request_json = '{
      "auth" : { "tenantName" : "FvTenant",
      "passwordCredentials" : { "username" : "admin", "password" : "FvAdmin999!" }
      }
    }'

    keystone_client = HTTPClient.new
    keystone_endpoint_uri = 'http://fv-ops01:35357/v2.0/tokens'
    keystone_response = keystone_client.post_content(keystone_endpoint_uri, auth_request_json, 'Content-Type' => 'application/json' )
    keystone_response_hashed = JSON.parse(keystone_response)

    keystone_response_endpoint_parsed = keystone_response_hashed['access']['serviceCatalog'][0]['endpoints'][0]
    @nova_endpoint_uri = keystone_response_endpoint_parsed.values[0]

    @keystone_auth_token = keystone_response_hashed['access']['token']['id']

  end

  def nova_images
    keystone

    nova_images_client = HTTPClient.new(default_header: {"X-Auth-Token" => @keystone_auth_token })

    nova_images_endpoint_uri = @nova_endpoint_uri + "/images/detail"
    nova_images_response = nova_images_client.get_content(nova_images_endpoint_uri, "q" => "status" )
    nova_images_response_hasged = JSON.parse(nova_images_response)

    return  nova_images_response_hasged

  end
end

i = 0
image_init = Nova.new
image_parsed = image_init.nova_images["images"]
image_status = "none"

while image_parsed.size > i do
  if image_parsed[i]["status"] != "ACTIVE"
    image_status = image_parsed[i]["name"] + " is " + image_parsed[i]["status"]
  end
  i += 1
end

p "snapshots are all active." if image_status == "none"

exit (image_status != "none" ? 2 : image_status == "none" ? 0 : 1)