python3-gunicorn: add patch work with geventlet

python3-gunicorn depends on python3-geventlet. geventlet has made some
breaking changes (which is part of meta-oe/kirkstone), however gunicorn
wasn't adapted to this, and it broke some features (at least ptests).

This patch backports the change that adapts gunicorn to the used version
of geventlet.

Signed-off-by: Gyorgy Sarvari <skandigraun@gmail.com>

meta-python/recipes-devtools/python/python3-gunicorn/eventlet-worker-ALREADY_HANDLED-WSGI_LOCAL.patch

@@ -0,0 +1,54 @@
+From 6a8ebb4844b2f28596ffe7421eb9f7d08c8dc4d8 Mon Sep 17 00:00:00 2001
+From: Sergey Shepelev <temotor@gmail.com>
+Date: Thu, 6 May 2021 12:54:06 +0300
+Subject: [PATCH] eventlet worker: ALREADY_HANDLED -> WSGI_LOCAL
+
+Eventlet v0.30.3+ removed wsgi.ALREADY_HANDLED in favor of
+`wsgi.WSGI_LOCAL.already_handled: bool`
+
+Sorry, this breaking change happened during only patch
+version increase 0.30.2 -> 0.30.3
+
+https://github.com/eventlet/eventlet/issues/543
+https://github.com/eventlet/eventlet/pull/544
+
+Upstream-Status: Backport [https://github.com/benoitc/gunicorn/commit/6a8ebb4844b2f28596ffe7421eb9f7d08c8dc4d8]
+Signed-off-by: Gyorgy Sarvari <skandigraun@gmail.com>
+
+---
+ gunicorn/workers/geventlet.py | 11 ++++++++++-
+ 1 file changed, 10 insertions(+), 1 deletion(-)
+
+diff --git a/gunicorn/workers/geventlet.py b/gunicorn/workers/geventlet.py
+index ffdb206c0..ea82f3d62 100644
+--- a/gunicorn/workers/geventlet.py
++++ b/gunicorn/workers/geventlet.py
+@@ -17,11 +17,16 @@
+ 
+ from eventlet import hubs, greenthread
+ from eventlet.greenio import GreenSocket
+-from eventlet.wsgi import ALREADY_HANDLED as EVENTLET_ALREADY_HANDLED
++import eventlet.wsgi
+ import greenlet
+ 
+ from gunicorn.workers.base_async import AsyncWorker
+ 
++# ALREADY_HANDLED is removed in 0.30.3+ now it's `WSGI_LOCAL.already_handled: bool`
++# https://github.com/eventlet/eventlet/pull/544
++EVENTLET_WSGI_LOCAL = getattr(eventlet.wsgi, "WSGI_LOCAL", None)
++EVENTLET_ALREADY_HANDLED = getattr(eventlet.wsgi, "ALREADY_HANDLED", None)
++
+ 
+ def _eventlet_socket_sendfile(self, file, offset=0, count=None):
+     # Based on the implementation in gevent which in turn is slightly
+@@ -125,6 +130,10 @@ def patch(self):
+         patch_sendfile()
+ 
+     def is_already_handled(self, respiter):
++        # eventlet >= 0.30.3
++        if getattr(EVENTLET_WSGI_LOCAL, "already_handled", None):
++            raise StopIteration()
++        # eventlet < 0.30.3
+         if respiter == EVENTLET_ALREADY_HANDLED:
+             raise StopIteration()
+         return super().is_already_handled(respiter)

meta-python/recipes-devtools/python/python3-gunicorn_20.1.0.bb

@@ -9,12 +9,13 @@ inherit pypi setuptools3 ptest
 
 SRC_URI += " \
 	file://run-ptest \
+	file://eventlet-worker-ALREADY_HANDLED-WSGI_LOCAL.patch \
 "
 
 RDEPENDS:${PN}-ptest += " \
     ${PYTHON_PN}-eventlet \
     ${PYTHON_PN}-gevent \
-	${PYTHON_PN}-pytest \
+    ${PYTHON_PN}-pytest \
 "
 
 do_install_ptest() {