class ElasticAPM::Injectors::NetHTTPInjector

def install
  Net::HTTP.class_eval do
    alias request_without_apm request
    def request(req, body = nil, &block)
      unless ElasticAPM.current_transaction
        return request_without_apm(req, body, &block)
      end
      host, port = req['host'] && req['host'].split(':')
      method = req.method
      path = req.path
      scheme = use_ssl? ? 'https' : 'http'
      # inside a session
      host ||= address
      port ||= 80
      # TODO: investigate
      _extra = {
        scheme: scheme,
        port: port,
        path: path
      }
      name = "#{method} #{host}"
      type = "ext.net_http.#{method}"
      ElasticAPM.span name, type do
        request_without_apm(req, body, &block)
      end
    end
  end
end