Stripe + Datadog Tracing integration

datadog_tracing_stripe.rb

module Stripe::APIOperations::Request::ClassMethods
  old_request = instance_method(:request)

  define_method(:request) do |*args|
    span = Datadog.tracer.trace('stripe.request', span_type: 'http')

    begin
      result = old_request.bind(self).call(*args)
    rescue Stripe::StripeError => e
      span.set_error(e)
      span.set_tag(:http_status, e.http_status)
      span.set_tag(:request_id, e.request_id)
      raise e
    else
      span.set_tag(:http_status, result&.[](0)&.http_status)
      span.set_tag(:request_id, result&.[](0)&.request_id)
    ensure
      span.set_tag(:method, args[0])
      span.set_tag(:url, args[1])
      span.finish
    end

    result
  end
end