Request ASGI attributes passed to Sampler (#1762)

* Request ASGI attributes passed to Sampler

* Update changelog

* aiohttp-client test http.url

---------

Co-authored-by: Srikanth Chekuri <[email protected]>
Co-authored-by: Shalev Roda <[email protected]>

Author: 3 people

CHANGELOG.md

@@ -19,6 +19,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
   ([#1733](https://github.com/open-telemetry/opentelemetry-python-contrib/pull/1733))
 - Make Django request span attributes available for `start_span`. 
   ([#1730](https://github.com/open-telemetry/opentelemetry-python-contrib/pull/1730))
+- Make ASGI request span attributes available for `start_span`. 
+  ([#1762](https://github.com/open-telemetry/opentelemetry-python-contrib/pull/1762))
 
 ### Fixed
 

instrumentation/opentelemetry-instrumentation-asgi/src/opentelemetry/instrumentation/asgi/__init__.py

@@ -531,15 +531,16 @@ async def __call__(self, scope, receive, send):
 
         span_name, additional_attributes = self.default_span_details(scope)
 
+        attributes = collect_request_attributes(scope)
+        attributes.update(additional_attributes)
         span, token = _start_internal_or_server_span(
             tracer=self.tracer,
             span_name=span_name,
             start_time=None,
             context_carrier=scope,
             context_getter=asgi_getter,
+            attributes=attributes,
         )
-        attributes = collect_request_attributes(scope)
-        attributes.update(additional_attributes)
         active_requests_count_attrs = _parse_active_request_count_attrs(
             attributes
         )