class ElasticAPM::Spies::NetHTTPSpy

def install
  Net::HTTP.class_eval do
    alias request_without_apm request
    def request(req, body = nil, &block)
      unless (transaction = ElasticAPM.current_transaction)
        return request_without_apm(req, body, &block)
      end
      host, = req['host'] && req['host'].split(':')
      method = req.method
      host ||= address
      name = "#{method} #{host}"
      type = "ext.net_http.#{method}"
      ElasticAPM.with_span name, type do |span|
        req['Elastic-Apm-Traceparent'] =
          transaction.traceparent.to_header(span_id: span.id)
        request_without_apm(req, body, &block)
      end
    end
  end
end