Help in Deploying Django, Django Channels to AWS

[PaulleDemon]

If you require any help with deploying Django, and Django channels to AWS, tag me in this thread. (note: standard charges apply).

You must also be able to provide the necessary IAM permissions for me to help you. If you are unable to do so, due to company policy or other reasons, I suggest you buy this video and do it yourself: https://www.buymeacoffee.com/artpaul/e/241689, you would still receive my support, if you require.

[HammadAhm3d]

@PaulleDemon Thank you for this guide. I have been following this to serve notifications from my django application via a websocket connection. I have followed every step and also passed the {"foo": "bar"} test that you mentioned at the end of the file. However, when I try to connect to the websocket using the elastic beanstalk link, it fails. I looked at the logs and the logs show that the endpoint ws/ (or the endpoint for websocket) is not found (404). This works totally fine on the localhost though. I can post the error logs if you require.

[HammadAhm3d]

Yes I did follow it. Here is the eb-engine.log file:
eb-engine.log

If you notice in the logs, at 404 error is thrown at the websocket endpoint i.e, ws/notifications

[PaulleDemon]

show me the log where the error occurs. Also, did you ssh into your instance and try the foo bar test as mentioned here?

[HammadAhm3d]

Yes I did and it worked! Here's the error block:

Oct 23 09:49:01 ip-172-31-43-210 web[9645]: During handling of the above exception, another exception occurred:
Oct 23 09:49:01 ip-172-31-43-210 web[9645]: Traceback (most recent call last):
Oct 23 09:49:01 ip-172-31-43-210 web[9645]: File "/var/app/venv/staging-LQM1lest/lib64/python3.11/site-packages/django/template/base.py", line 883, in _resolve_lookup
Oct 23 09:49:01 ip-172-31-43-210 web[9645]: current = current[bit]
Oct 23 09:49:01 ip-172-31-43-210 web[9645]: ~~~~~~~^^^^^
Oct 23 09:49:01 ip-172-31-43-210 web[9645]: TypeError: 'URLResolver' object is not subscriptable
Oct 23 09:49:01 ip-172-31-43-210 web[9645]: During handling of the above exception, another exception occurred:
Oct 23 09:49:01 ip-172-31-43-210 web[9645]: Traceback (most recent call last):
Oct 23 09:49:01 ip-172-31-43-210 web[9645]: File "/var/app/venv/staging-LQM1lest/lib64/python3.11/site-packages/django/template/base.py", line 893, in _resolve_lookup
Oct 23 09:49:01 ip-172-31-43-210 web[9645]: current = getattr(current, bit)
Oct 23 09:49:01 ip-172-31-43-210 web[9645]: ^^^^^^^^^^^^^^^^^^^^^
Oct 23 09:49:01 ip-172-31-43-210 web[9645]: AttributeError: 'URLResolver' object has no attribute 'name'
Oct 23 09:49:01 ip-172-31-43-210 web[9645]: During handling of the above exception, another exception occurred:
Oct 23 09:49:01 ip-172-31-43-210 web[9645]: Traceback (most recent call last):
Oct 23 09:49:01 ip-172-31-43-210 web[9645]: File "/var/app/venv/staging-LQM1lest/lib64/python3.11/site-packages/django/template/base.py", line 899, in _resolve_lookup
Oct 23 09:49:01 ip-172-31-43-210 web[9645]: current = current[int(bit)]
Oct 23 09:49:01 ip-172-31-43-210 web[9645]: ^^^^^^^^
Oct 23 09:49:01 ip-172-31-43-210 web[9645]: ValueError: invalid literal for int() with base 10: 'name'
Oct 23 09:49:01 ip-172-31-43-210 web[9645]: During handling of the above exception, another exception occurred:
Oct 23 09:49:01 ip-172-31-43-210 web[9645]: Traceback (most recent call last):
Oct 23 09:49:01 ip-172-31-43-210 web[9645]: File "/var/app/venv/staging-LQM1lest/lib64/python3.11/site-packages/django/template/base.py", line 906, in _resolve_lookup
Oct 23 09:49:01 ip-172-31-43-210 web[9645]: raise VariableDoesNotExist(
Oct 23 09:49:01 ip-172-31-43-210 web[9645]: django.template.base.VariableDoesNotExist: Failed lookup for key [name] in <URLResolver (admin:admin) 'admin/'>
Oct 23 09:49:01 ip-172-31-43-210 web[9645]: Not Found: /ws/notifications/
Oct 23 09:49:01 ip-172-31-43-210 web[9645]: Not Found: /ws/notifications/

I have routing.py
`from django.urls import re_path
from core.Notification.consumers import NotificationConsumer

websocket_urlpatterns = [
re_path(r'ws/notifications/$', NotificationConsumer.as_asgi()),
]
`

asgi.py:
`import os
import django
from django.core.asgi import get_asgi_application

os.environ.setdefault('DJANGO_SETTINGS_MODULE', 'project_management.settings')

django.setup()

from channels.auth import AuthMiddlewareStack
from channels.routing import ProtocolTypeRouter, URLRouter
from project_management.routing import websocket_urlpatterns

application = ProtocolTypeRouter({
"http": get_asgi_application(),
"websocket": AuthMiddlewareStack(
URLRouter(
websocket_urlpatterns
)
),
})
`

channels in settings.py:
CHANNEL_LAYERS = { 'default': { 'BACKEND': 'channels_redis.core.RedisChannelLayer', 'CONFIG': { "hosts": [('XXXX-redis-endpoint-XXXX.amazonaws.com', 6379)], }, },

[HammadAhm3d]

@PaulleDemon Any news?

[PaulleDemon]

@HammadAhm3d sorry was busy, this has nothing to do with aws, you need to check your model code to see if your returning the correct value,

Oct 23 09:49:01 ip-172-31-43-210 web[9645]: current = current[int(bit)]
Oct 23 09:49:01 ip-172-31-43-210 web[9645]: ^^^^^^^^
Oct 23 09:49:01 ip-172-31-43-210 web[9645]: ValueError: invalid literal for int() with base 10: 'name'
Oct 23 09:49:01 ip-172-31-43-210 web[9645]: During handling of the above exception, another exception occurred:
Oct 23 09:49:01 ip-172-31-43-210 web[9645]: Traceback (most recent call last):
Oct 23 09:49:01 ip-172-31-43-210 web[9645]: File "/var/app/venv/staging-LQM1lest/lib64/python3.11/site-packages/django/template/base.py", line 906, in _resolve_lookup
Oct 23 09:49:01 ip-172-31-43-210 web[9645]: raise VariableDoesNotExist(
Oct 23 09:49:01 ip-172-31-43-210 web[9645]: django.template.base.VariableDoesNotExist: Failed lookup for key [name] in <URLResolver (admin:admin) 'admin/'>