Monkey patch eventlet

Procfile

@@ -1,3 +1,3 @@
-web: gunicorn --config=gunicorn.conf.py dribdat.app:init_app\(\)
+web: gunicorn --config=gunicorn.conf.py patched:init_app\(\)
 default: gunicorn dribdat.app:init_app\(\) -b 0.0.0.0:$DEFAULT_PORT -w 3 --log-file=-
 release: ./release.sh

gunicorn.conf.py

@@ -8,4 +8,5 @@ secure_scheme_headers = {
 }
 bind = '0.0.0.0:%s' % str(os_env.get('PORT', 5000))
 worker_class = 'eventlet'
+workers = os_env.get('WORKERS', 2)
 errorlog = '-'

patched.py

@@ -0,0 +1,15 @@
+# -*- coding: utf-8 -*-
+"""Monkey patched application for workers."""
+try:
+    from eventlet import monkey_patch as monkey_patch
+    monkey_patch()
+except ImportError:
+    try:
+        from gevent.monkey import patch_all
+        patch_all()
+        from psycogreen.gevent import patch_psycopg
+        patch_psycopg()
+    except ImportError:
+        pass
+
+from dribdat.app import init_app  # re-export

pyproject.toml

@@ -11,7 +11,7 @@ click = ">=6.7"
 cssmin = ">=0.2.0"
 email_validator = ">=1.1.1"
 email-validator = "*"
-eventlet = ">=0.30.2"
+eventlet = "0.30.2"
 flask = ">=0.12.2"
 flask-assets = ">=0.12"
 flask-bcrypt = ">=0.7.1"

requirements/prod.txt

@@ -11,7 +11,7 @@ chardet==4.0.0
 Click>=8.0.0,<9
 cssmin==0.2.0
 cssselect==1.1.0
-eventlet==0.31.0
+eventlet==0.30.2
 Flask==1.1.2
 Flask-Assets==2.0
 Flask-Bcrypt==0.7.1