fix(django): fix Django ASGI integration on Python 3.12

sentry_sdk/integrations/django/asgi.py

@@ -8,6 +8,7 @@
 
 import asyncio
 import functools
+import inspect
 
 from django.core.handlers.wsgi import WSGIRequest
 
@@ -25,14 +26,31 @@
 
 
 if TYPE_CHECKING:
-    from collections.abc import Callable
-    from typing import Any, Union
+    from typing import Any, Callable, Union, TypeVar
 
     from django.core.handlers.asgi import ASGIRequest
     from django.http.response import HttpResponse
 
     from sentry_sdk._types import Event, EventProcessor
 
+    _F = TypeVar("_F", bound=Callable[..., Any])
+
+
+# Python 3.12 deprecates asyncio.iscoroutinefunction() as an alias for
+# inspect.iscoroutinefunction(), whilst also removing the _is_coroutine marker.
+# The latter is replaced with the inspect.markcoroutinefunction decorator.
+# Until 3.12 is the minimum supported Python version, provide a shim.
+# This was copied from https://github.com/django/asgiref/blob/main/asgiref/sync.py
+if hasattr(inspect, "markcoroutinefunction"):
+    iscoroutinefunction = inspect.iscoroutinefunction
+    markcoroutinefunction = inspect.markcoroutinefunction
+else:
+    iscoroutinefunction = asyncio.iscoroutinefunction  # type: ignore[assignment]
+
+    def markcoroutinefunction(func: "_F") -> "_F":
+        func._is_coroutine = asyncio.coroutines._is_coroutine  # type: ignore
+        return func
+
 
 def _make_asgi_request_event_processor(request):
     # type: (ASGIRequest) -> EventProcessor
@@ -181,16 +199,16 @@ def _async_check(self):
             a thread is not consumed during a whole request.
             Taken from django.utils.deprecation::MiddlewareMixin._async_check
             """
-            if asyncio.iscoroutinefunction(self.get_response):
-                self._is_coroutine = asyncio.coroutines._is_coroutine  # type: ignore
+            if iscoroutinefunction(self.get_response):
+                markcoroutinefunction(self)
 
         def async_route_check(self):
             # type: () -> bool
             """
             Function that checks if we are in async mode,
             and if we are forwards the handling of requests to __acall__
             """
-            return asyncio.iscoroutinefunction(self.get_response)
+            return iscoroutinefunction(self.get_response)
 
         async def __acall__(self, *args, **kwargs):
             # type: (*Any, **Any) -> Any

tests/integrations/django/asgi/test_asgi.py

@@ -1,5 +1,8 @@
 import base64
+import sys
 import json
+import inspect
+import asyncio
 import os
 from unittest import mock
 
@@ -8,6 +11,7 @@
 from channels.testing import HttpCommunicator
 from sentry_sdk import capture_message
 from sentry_sdk.integrations.django import DjangoIntegration
+from sentry_sdk.integrations.django.asgi import _asgi_middleware_mixin_factory
 from tests.integrations.django.myapp.asgi import channels_application
 
 try:
@@ -526,3 +530,65 @@ async def test_asgi_request_body(
         assert event["request"]["data"] == expected_data
     else:
         assert "data" not in event["request"]
+
+
+@pytest.mark.asyncio
+@pytest.mark.skipif(
+    sys.version_info >= (3, 12),
+    reason=(
+        "asyncio.iscoroutinefunction has been replaced in 3.12 by inspect.iscoroutinefunction"
+    ),
+)
+async def test_asgi_mixin_iscoroutinefunction_before_3_12():
+    sentry_asgi_mixin = _asgi_middleware_mixin_factory(lambda: None)
+
+    async def get_response(): ...
+
+    instance = sentry_asgi_mixin(get_response)
+    assert asyncio.iscoroutinefunction(instance)
+
+
+@pytest.mark.skipif(
+    sys.version_info >= (3, 12),
+    reason=(
+        "asyncio.iscoroutinefunction has been replaced in 3.12 by inspect.iscoroutinefunction"
+    ),
+)
+def test_asgi_mixin_iscoroutinefunction_when_not_async_before_3_12():
+    sentry_asgi_mixin = _asgi_middleware_mixin_factory(lambda: None)
+
+    def get_response(): ...
+
+    instance = sentry_asgi_mixin(get_response)
+    assert not asyncio.iscoroutinefunction(instance)
+
+
+@pytest.mark.asyncio
+@pytest.mark.skipif(
+    sys.version_info < (3, 12),
+    reason=(
+        "asyncio.iscoroutinefunction has been replaced in 3.12 by inspect.iscoroutinefunction"
+    ),
+)
+async def test_asgi_mixin_iscoroutinefunction_after_3_12():
+    sentry_asgi_mixin = _asgi_middleware_mixin_factory(lambda: None)
+
+    async def get_response(): ...
+
+    instance = sentry_asgi_mixin(get_response)
+    assert inspect.iscoroutinefunction(instance)
+
+
+@pytest.mark.skipif(
+    sys.version_info < (3, 12),
+    reason=(
+        "asyncio.iscoroutinefunction has been replaced in 3.12 by inspect.iscoroutinefunction"
+    ),
+)
+def test_asgi_mixin_iscoroutinefunction_when_not_async_after_3_12():
+    sentry_asgi_mixin = _asgi_middleware_mixin_factory(lambda: None)
+
+    def get_response(): ...
+
+    instance = sentry_asgi_mixin(get_response)
+    assert not inspect.iscoroutinefunction(instance)