Refactor ASGI naming helpers and remove redundant check

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: cursoragent

sentry_sdk/integrations/asgi.py

@@ -27,7 +27,6 @@
 from sentry_sdk.traces import (
     StreamedSpan,
     SegmentSource,
-    SOURCE_FOR_STYLE as SEGMENT_SOURCE_FOR_STYLE,
 )
 from sentry_sdk.tracing import (
     SOURCE_FOR_STYLE,
@@ -45,7 +44,6 @@
     _get_installed_modules,
     reraise,
     capture_internal_exceptions,
-    qualname_from_function,
 )
 
 from typing import TYPE_CHECKING
@@ -364,8 +362,7 @@ async def _sentry_wrapped_send(
                         finally:
                             if isinstance(span, StreamedSpan):
                                 already_set = (
-                                    span is not None
-                                    and span.name != _DEFAULT_TRANSACTION_NAME
+                                    span.name != _DEFAULT_TRANSACTION_NAME
                                     and span.get_attributes().get("sentry.span.source")
                                     in [
                                         SegmentSource.COMPONENT.value,
@@ -460,36 +457,5 @@ def _get_transaction_name_and_source(
     def _get_segment_name_and_source(
         self: "SentryAsgiMiddleware", segment_style: str, asgi_scope: "Any"
     ) -> "Tuple[str, str]":
-        name = None
-        source = SEGMENT_SOURCE_FOR_STYLE[segment_style].value
-        ty = asgi_scope.get("type")
-
-        if segment_style == "endpoint":
-            endpoint = asgi_scope.get("endpoint")
-            # Webframeworks like Starlette mutate the ASGI env once routing is
-            # done, which is sometime after the request has started. If we have
-            # an endpoint, overwrite our generic transaction name.
-            if endpoint:
-                name = qualname_from_function(endpoint) or ""
-            else:
-                name = _get_url(asgi_scope, "http" if ty == "http" else "ws", host=None)
-                source = SegmentSource.URL.value
-
-        elif segment_style == "url":
-            # FastAPI includes the route object in the scope to let Sentry extract the
-            # path from it for the transaction name
-            route = asgi_scope.get("route")
-            if route:
-                path = getattr(route, "path", None)
-                if path is not None:
-                    name = path
-            else:
-                name = _get_url(asgi_scope, "http" if ty == "http" else "ws", host=None)
-                source = SegmentSource.URL.value
-
-        if name is None:
-            name = _DEFAULT_TRANSACTION_NAME
-            source = SegmentSource.ROUTE.value
-            return name, source
-
-        return name, source
+        name, source = self._get_transaction_name_and_source(segment_style, asgi_scope)
+        return name, str(source)