class ElasticAPM::Spies::HTTPSpy

def install
  ::HTTP::Client.class_eval do
    alias perform_without_apm perform
    def perform(req, options)
      unless (transaction = ElasticAPM.current_transaction)
        return perform_without_apm(req, options)
      end
      method = req.verb.to_s.upcase
      host = req.uri.host
      name = "#{method} #{host}"
      ElasticAPM.with_span(
        name,
        TYPE,
        subtype: SUBTYPE,
        action: method
      ) do |span|
        trace_context = span&.trace_context || transaction.trace_context
        req['Elastic-Apm-Traceparent'] = trace_context.to_header
        perform_without_apm(req, options)
      end
    end
  end
end

def perform(req, options)
  unless (transaction = ElasticAPM.current_transaction)
    return perform_without_apm(req, options)
  end
  method = req.verb.to_s.upcase
  host = req.uri.host
  name = "#{method} #{host}"
  ElasticAPM.with_span(
    name,
    TYPE,
    subtype: SUBTYPE,
    action: method
  ) do |span|
    trace_context = span&.trace_context || transaction.trace_context
    req['Elastic-Apm-Traceparent'] = trace_context.to_header
    perform_without_apm(req, options)
  end
end