Merge pull request #849 from uktrade/gevent

Switch to gevent

Procfile

@@ -1,3 +1,3 @@
-web: python manage.py distributed_migrate --noinput && gunicorn conf.wsgi --bind 0.0.0.0:$PORT
+web: python manage.py distributed_migrate --noinput && gunicorn conf.wsgi --worker-class gevent --worker-connections 1000 --bind 0.0.0.0:$PORT
 celery_worker: FEATURE_ENFORCE_STAFF_SSO_ENABLED=False celery -A conf worker -l info
 celery_beat: FEATURE_ENFORCE_STAFF_SSO_ENABLED=False celery -A conf beat -l info --scheduler django_celery_beat.schedulers:DatabaseScheduler

conf/wsgi.py

@@ -11,6 +11,10 @@
 
 from django.core.wsgi import get_wsgi_application
 
+import psycogreen.gevent
+psycogreen.gevent.patch_psycopg()
+
+
 os.environ.setdefault("DJANGO_SETTINGS_MODULE", "conf.settings")
 
 application = get_wsgi_application()

requirements.in

@@ -2,7 +2,6 @@ django==2.2.*
 djangorestframework==3.9.*
 django-environ==0.4.5
 gunicorn==19.5.0
-gevent==1.2.2
 sentry-sdk==0.13.4
 django_storages==1.7.1
 whitenoise==4.1.2
@@ -36,4 +35,6 @@ notifications-python-client==5.3.*
 pillow>=6.*  # for security fix. check compatibility on next wagtail upgrade
 num2words==0.5.10
 pycountry==19.8.18
-elastic-apm>=5.5.2,<6.0.0
+elastic-apm>=5.5.2,<6.0.0
+gevent>=20.6.1,<21.0.0
+psycogreen>=1.0.2,<2.0.0

requirements.txt

@@ -39,9 +39,9 @@ djangorestframework==3.9.4  # via -r requirements.in, sigauth, wagtail
 docopt==0.6.2             # via notifications-python-client, num2words
 docutils==0.16            # via botocore
 draftjs-exporter==2.1.7   # via wagtail
-elastic-apm==5.6.0        # via -r requirements.in
+elastic-apm==5.7.0        # via -r requirements.in
 future==0.18.2            # via celery, notifications-python-client
-gevent==1.2.2             # via -r requirements.in
+gevent==20.6.1            # via -r requirements.in
 greenlet==0.4.16          # via gevent
 gunicorn==19.5.0          # via -r requirements.in
 html2text==2018.1.9       # via -r requirements.in
@@ -59,6 +59,7 @@ num2words==0.5.10         # via -r requirements.in
 oauthlib==3.1.0           # via requests-oauthlib
 packaging==20.4           # via bleach
 pillow==6.2.2             # via -r requirements.in, wagtail
+psycogreen==1.0.2         # via -r requirements.in
 psycopg2==2.7.3.2         # via -r requirements.in
 pycountry==19.8.18        # via -r requirements.in
 pyjwt==1.7.1              # via notifications-python-client
@@ -87,6 +88,8 @@ webencodings==0.5.1       # via bleach, html5lib
 whitenoise==4.1.2         # via -r requirements.in
 willow==1.3               # via wagtail
 zipp==3.1.0               # via importlib-metadata
+zope.event==4.4           # via gevent
+zope.interface==5.1.0     # via gevent
 
 # The following packages are considered to be unsafe in a requirements file:
 # setuptools

requirements_test.txt

@@ -43,13 +43,13 @@ djangorestframework==3.9.4  # via -r requirements.in, sigauth, wagtail
 docopt==0.6.2             # via coveralls, notifications-python-client, num2words
 docutils==0.16            # via botocore
 draftjs-exporter==2.1.7   # via wagtail
-elastic-apm==5.6.0        # via -r requirements.in
+elastic-apm==5.7.0        # via -r requirements.in
 factory-boy==2.12.0       # via -r requirements_test.in, wagtail-factories
 faker==4.1.0              # via factory-boy
-flake8==3.8.2             # via -r requirements_test.in
+flake8==3.8.3             # via -r requirements_test.in
 freezegun==0.3.14         # via -r requirements_test.in
 future==0.18.2            # via celery, notifications-python-client
-gevent==1.2.2             # via -r requirements.in
+gevent==20.6.1            # via -r requirements.in
 greenlet==0.4.16          # via gevent
 gunicorn==19.5.0          # via -r requirements.in
 html2text==2018.1.9       # via -r requirements.in
@@ -69,8 +69,9 @@ num2words==0.5.10         # via -r requirements.in
 oauthlib==3.1.0           # via requests-oauthlib
 packaging==20.4           # via bleach, pytest, pytest-sugar
 pillow==6.2.2             # via -r requirements.in, wagtail
-pip-tools==5.2.0          # via -r requirements_test.in
+pip-tools==5.2.1          # via -r requirements_test.in
 pluggy==0.13.1            # via pytest
+psycogreen==1.0.2         # via -r requirements.in
 psycopg2==2.7.3.2         # via -r requirements.in
 py==1.8.1                 # via pytest
 pycodestyle==2.6.0        # via flake8
@@ -111,6 +112,8 @@ webencodings==0.5.1       # via bleach, html5lib
 whitenoise==4.1.2         # via -r requirements.in
 willow==1.3               # via wagtail
 zipp==3.1.0               # via importlib-metadata
+zope.event==4.4           # via gevent
+zope.interface==5.1.0     # via gevent
 
 # The following packages are considered to be unsafe in a requirements file:
 # pip