From: florimondmanca <florimond.manca@protonmail.com>
Date: Tue, 14 Jun 2022 21:21:30 +0000 (+0200)
Subject: aclosing on py < 3.10
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=d192a6b7603d79cfaff9fc106294e1ec0616d49b;p=thirdparty%2Fstarlette.git

aclosing on py < 3.10
---

diff --git a/setup.py b/setup.py
index 1597ef45..f0c160d9 100644
--- a/setup.py
+++ b/setup.py
@@ -39,6 +39,7 @@ setup(
     install_requires=[
         "anyio>=3.4.0,<5",
         "typing_extensions>=3.10.0; python_version < '3.10'",
+        "async_generator; python < '3.10'",
     ],
     extras_require={
         "full": [
diff --git a/starlette/_compat.py b/starlette/_compat.py
index 11656191..bba8821f 100644
--- a/starlette/_compat.py
+++ b/starlette/_compat.py
@@ -1,5 +1,10 @@
 import hashlib
 
+__all__ = [
+    "md5_hexdigest",
+    "aclosing",
+]
+
 # Compat wrapper to always include the `usedforsecurity=...` parameter,
 # which is only added from Python 3.9 onwards.
 # We use this flag to indicate that we use `md5` hashes only for non-security
@@ -23,7 +28,14 @@ try:
             data, usedforsecurity=usedforsecurity
         ).hexdigest()
 
+
 except TypeError:  # pragma: no cover
 
     def md5_hexdigest(data: bytes, *, usedforsecurity: bool = True) -> str:
         return hashlib.md5(data).hexdigest()
+
+
+try:
+    from contextlib import aclosing
+except ImportError:  # Python < 3.10
+    from async_generator import aclosing  # type: ignore
diff --git a/starlette/middleware/http.py b/starlette/middleware/http.py
index 8284e989..f3c07064 100644
--- a/starlette/middleware/http.py
+++ b/starlette/middleware/http.py
@@ -1,7 +1,7 @@
-from contextlib import aclosing
 from functools import partial
 from typing import AsyncGenerator, Callable, Optional
 
+from .._compat import aclosing
 from ..datastructures import MutableHeaders
 from ..responses import Response
 from ..types import ASGIApp, Message, Receive, Scope, Send