class Async::HTTP::Server

def call(request)
	if trace_parent = request.headers['traceparent']
		self.trace_context = Traces::Context.parse(trace_parent.join, request.headers['tracestate'], remote: true)
	end
	
	attributes = {
		'http.method': request.method,
		'http.authority': request.authority,
		'http.scheme': request.scheme,
		'http.path': request.path,
		'http.user_agent': request.headers['user-agent'],
	}
	
	if length = request.body&.length
		attributes['http.request.length'] = length
	end
	
	if protocol = request.protocol
		attributes['http.protocol'] = protocol
	end
	
	trace('async.http.server.call', resource: "#{request.method} #{request.path}", attributes: attributes) do |span|
		super.tap do |response|
			if status = response&.status
				span['http.status_code'] = status
			end
			
			if length = response&.body&.length
				span['http.response.length'] = length
			end
		end
	end
end