Sensu EC2 remove client

ec2node.rb

require 'timeout'
require 'rubygems' if RUBY_VERSION < '1.9.0'
require 'sensu-handler'
require 'fog'

class Ec2Node < Sensu::Handler
  def filter; end

  def handle
    # #YELLOW
    puts "Client = #{@event["client"]}"
    puts "Name = #{@event["client"]["name"]}"
    puts "Id = #{@event["client"]["name"].split(".")[0]}"
    puts "Address = #{@event["client"]["address"]}"

    unless ec2_node_exists? # rubocop:disable UnlessElse
      delete_sensu_client!
    else
      puts "[EC2 Node] #{@event['client']['name']} appears to exist in EC2"
    end
  end

  def delete_sensu_client!
    response = api_request(:DELETE, '/clients/' + @event['client']['name']).code
    deletion_status(response)
  end
 def ec2_node_exists?
    states = acquire_valid_states
    filtered_instances = ec2.servers.select { |s| states.include?(s.state) }
    instance_ids = filtered_instances.map(&:id)
    instance_ids.each do |id|
      return true if id == @event['client']['name'].split(".")[0]
    end
    false # no match found, node doesn't exist
  end

  def ec2
    @ec2 ||= begin
      key = settings['aws']['access_key'] || ENV['AWS_ACCESS_KEY_ID']
      secret = settings['aws']['secret_key'] || ENV['AWS_SECRET_ACCESS_KEY']
      region = settings['aws']['region'] || ENV['EC2_REGION']
      Fog::Compute.new(provider: 'AWS',
                       aws_access_key_id: key,
                       aws_secret_access_key: secret,
                       region: region)
    end
  end

  def deletion_status(code)
    case code
    when '202'
      puts "[EC2 Node] 202: Successfully deleted Sensu client: #{@event['client']['name'].split(".")[0]}"
    when '404'
      puts "[EC2 Node] 404: Unable to delete #{@event['client']['name'].split(".")[0]} , doesn't exist!"
    when '500'
      puts "[EC2 Node] 500: Miscellaneous error when deleting #{@event['client']['name'].split(".")[0]}"
    else
      puts "[EC2 Node] #{res}: Completely unsure of what happened!"
    end
  end
 def acquire_valid_states
    if @event['client'].key?('ec2_states')
      id_states = @event['client']['name'].split(".")[0]['ec2_states']
      puts " Id_States = #{id_states}"
      return id_states
    else
      return ['running']
    end
  end
end