Elasticsearch::Model.client = Elasticsearch::Client.new(
  host: ENV.fetch('ELASTICSEARCH_ENDPOINT'),
  port: 80
) do |faraday|
  faraday.use FaradayMiddleware::Gzip # ここを追加
  faraday.request :aws_signers_v4,
                  credentials: Aws::Credentials.new(ENV.fetch('AWS_KEY_ID'), ENV.fetch('AWS_ACCESS_KEY')),
                  service_name: 'es',
                  region: 'ap-northeast-1'
  faraday.adapter Faraday.default_adapter
end