Application instance took too long to shut down and was killed
Elabbasy00 opened this issue · comments
-
Your OS and runtime environment, and browser if applicable
ubuntu 20.04 digital ocean droplet -
How you're running Channels (runserver? daphne/runworker? Nginx/Apache in front?)
daphne / Nginx -
Console logs and full tracebacks of any errors
2022-03-03 21:04:54,257 ERROR Exception inside application: Attempt to send on a closed protocol
Traceback (most recent call last):
File "/usr/local/lib/python3.8/site-packages/channels/routing.py", line 71, in __call__
return await application(scope, receive, send)
File "/usr/local/lib/python3.8/site-packages/channels/sessions.py", line 47, in __call__
return await self.inner(dict(scope, cookies=cookies), receive, send)
File "/usr/local/lib/python3.8/site-packages/channels/sessions.py", line 263, in __call__
return await self.inner(wrapper.scope, receive, wrapper.send)
File "/usr/local/lib/python3.8/site-packages/channels/auth.py", line 185, in __call__
return await super().__call__(scope, receive, send)
File "/usr/local/lib/python3.8/site-packages/channels/middleware.py", line 26, in __call__
return await self.inner(scope, receive, send)
File "/usr/local/lib/python3.8/site-packages/channels/routing.py", line 150, in __call__
return await application(
File "/usr/local/lib/python3.8/site-packages/channels/consumer.py", line 94, in app
return await consumer(scope, receive, send)
File "/usr/local/lib/python3.8/site-packages/channels/consumer.py", line 58, in __call__
await await_many_dispatch(
File "/usr/local/lib/python3.8/site-packages/channels/utils.py", line 51, in await_many_dispatch
await dispatch(result)
File "/usr/local/lib/python3.8/site-packages/channels/consumer.py", line 73, in dispatch
await handler(message)
File "/app/backend/server/./script/consumers.py", line 242, in chat_message
await self.send(text_data=json.dumps({
File "/usr/local/lib/python3.8/site-packages/channels/generic/websocket.py", line 209, in send
await super().send({"type": "websocket.send", "text": text_data})
File "/usr/local/lib/python3.8/site-packages/channels/consumer.py", line 81, in send
await self.base_send(message)
File "/usr/local/lib/python3.8/site-packages/channels/sessions.py", line 226, in send
return await self.real_send(message)
File "/usr/local/lib/python3.8/site-packages/daphne/server.py", line 234, in handle_reply
protocol.handle_reply(message)
File "/usr/local/lib/python3.8/site-packages/daphne/ws_protocol.py", line 202, in handle_reply
self.serverSend(message["text"], False)
File "/usr/local/lib/python3.8/site-packages/daphne/ws_protocol.py", line 256, in serverSend
self.sendMessage(content.encode("utf8"), binary)
File "/usr/local/lib/python3.8/site-packages/autobahn/websocket/protocol.py", line 2217, in sendMessage
raise Disconnected("Attempt to send on a closed protocol")
autobahn.exception.Disconnected: Attempt to send on a closed protocol2022-03-04 00:02:50,902 WARNING Application instance <Task pending name='Task-672440' coro=<ProtocolTypeRouter.__call__() running at /usr/local/lib/python3.8/site-packages/channels/routing.py:71> wait_for=<Future pending cb=[_chain_future.<locals>._call_check_cancel() at /usr/local/lib/python3.8/asyncio/futures.py:360, <TaskWakeupMethWrapper object at 0x7efebc91aa30>()]>> for connection <WebSocketProtocol client=['172.19.0.6', 43914] path=b'/ws/script/Md_Aman/'> took too long to shut down and was killed.consumers.py
class ScriptConsumers(AsyncWebsocketConsumer):
def log_to_json(self, log):
'''
convert log to json
return object like seriailize
'''
created_at = log.get_date()
return{
# long data
}
}
def save_new_log(self, obj):
'''
take log object in args
and save to db
return passed object converted to json
'''
# make sure to return queryset
try:
queryset = LogFor.objects.get(
username=obj['from'])
except LogFor.DoesNotExist:
queryset = LogFor.objects.create(username=obj['from'], online=1)
try:
new_log = Logs.objects.create(
logfor=queryset,
# long data
)
except Exception as e:
new_log = Logs.objects.create(
# long data
)
content = {
'command': 'new_log',
'log': self.log_to_json(new_log)
}
return content
def get_latest_10_log(self, obj):
'''
return last 10 log for each user in db
'''
queryset = LogFor.objects.all()
serializer = LogsForSerializers(queryset, many=True)
return serializer.data
async def new_log(self, obj):
'''
save log in async and call passed it back to group
'''
content = await database_sync_to_async(self.save_new_log)(obj)
await self.send_logs_data(content)
async def fetch_logs(self, data):
'''
get latest 10 log in async and put it back to websocket listener
'''
content = await database_sync_to_async(self.get_latest_10_log)(data)
await self.send_logs(content)
def update_user_incr(self, user):
'''
update online status
'''
try:
user = LogFor.objects.get(username=user.replace("_", " "))
user.online = 1
user.save()
except:
return
def update_user_decr(self, user):
'''
update online status
'''
try:
user = LogFor.objects.get(username=user.replace("_", " "))
user.online = 0
user.save()
except:
return
async def connect(self):
try:
self.username = self.scope['url_route']['kwargs']['username']
await database_sync_to_async(self.update_user_incr)(self.username)
except Exception as e:
print("Connect() : ", e)
self.room_group_name = 'logs' # all user in same group
# Join room group
await self.channel_layer.group_add(
self.room_group_name,
self.channel_name
)
await self.accept()
async def disconnect(self, close_code):
# Leave room group
try:
if(self.username):
await database_sync_to_async(self.update_user_decr)(self.username)
await self.channel_layer.group_discard(
self.room_group_name,
self.channel_name
)
except Exception as e:
print("Disconnect() : ", e)
print("Disconnect() close_Code : ", close_code)
await self.channel_layer.group_discard(
self.room_group_name,
self.channel_name
)
commands = {
"fetch_logs": fetch_logs,
"new_log": new_log
}
# Receive message from WebSocket
async def receive(self, text_data):
data = json.loads(text_data)
await self.commands[data['command']](self, data)
# Receive message from room group
async def send_logs_data(self, data):
try:
await self.channel_layer.group_send(
self.room_group_name,
{
'type': 'chat_message',
'message': data
}
)
except Exception as e:
print("send_logs_data() : ", e)
async def send_logs(self, message):
try:
await self.send(text_data=json.dumps(message))
except Exception as e:
print("send_logs() : ", e)
# Send message to WebSocket
async def chat_message(self, event):
message = event['message']
await self.send(text_data=json.dumps({
'message': message
}))