tweaking span creation

hiphop/service.py

@@ -33,7 +33,7 @@ def hip():
     print(request.headers)
     r = ""
     try:
-        parent_span = tracer.get_span(request) if "X-B3-Traceid" in request.headers else tracer.get_span()
+        parent_span = tracer.extract(Format.HTTP_HEADERS, request.headers) if tier > 1 else tracer.get_span()
         print(f"{parent_span}")
         url = f"http://{service}-{tier + 1}/hip"
         with opentracing.tracer.start_span(operation_name=url, child_of=parent_span) as span:
@@ -41,6 +41,7 @@ def hip():
             span.set_tag("http.url", url)
             headers = dict(request.headers)
             tracer.inject(span, Format.HTTP_HEADERS, headers)
+            print(f"tracer injected headers: { headers }")
             r = requests.get(url, headers=headers)
             span.set_tag("http.status_code", r.status_code)
         print(r)