Unit: Does unit support the python framework of the ASGI specification ? Currently only WSGI is supported？

Created on 20 Dec 2018  ·  6Comments  ·  Source: nginx/unit

Does unit support the python framework of the ASGI specification ? Currently only WSGI is supported？

>

Currently, when I test the asynchronous framework of Python 3 today, I always get debug errors when requesting: Python failed to call the application
is it a code problem or something?

unit config

{
  "listeners": {
    "*:8000": {
      "application": "flaskapp"
    },
    "*:9000": {
      "application": "app"
    }
  },
  "applications": {
    "flaskapp": {
      "type": "python2.7",
      "processes": 1,
      "module": "wsgi",
      "user": "root",
      "group": "root",
      "path": "/apps/py",
      "working_directory": "/apps",
      "home" : "/apps/flask/.venv"
    },
    "app": {
      "type": "python3.7",
      "processes": 1,
      "module": "app",
      "user": "root",
      "group": "root",
      "path": "/apps/py",
      "working_directory": "/apps",
      "home" : "/apps/py/.venv"
    },
    "quart": {
      "type": "python3.7",
      "processes": 1,
      "module": "quart",
      "user": "root",
      "group": "root",
      "path": "/apps/py",
      "working_directory": "/apps",
      "home" : "/apps/py/.venv"
    }
  },
  "access_log": "/var/log/access.log"
}

first test (quart)

https://github.com/pgjones/quart

from quart import Quart

application = Quart(__name__)

@application.route('/')
async def hello():
    return 'hello'

#application.run()

second test (starlette)

https://github.com/encode/starlette

from starlette.applications import Starlette
from starlette.responses import JSONResponse
import uvicorn

application = Starlette()


@application.route('/')
async def homepage(request):
    return JSONResponse({'hello': 'world'})

#if __name__ == '__main__':
#    uvicorn.run(application, host='0.0.0.0', port=9000)

debug info

2018/12/20 09:39:14.732 [debug] 16884#16884 [unit] #25: GET / (0)
2018/12/20 09:39:14.732 [error] 16884#16884 [unit] #25: Python failed to call the application
2018/12/20 09:39:14.732 [debug] 16884#16884 [unit] #25: done: 1
2018/12/20 09:39:14.732 [debug] 16884#16884 [unit] port_send: found port 16779,1 fd 8
2018/12/20 09:39:14.732 [debug] 16884#16884 [unit] port_send(8, 16): 16
2018/12/20 09:39:14.725 [debug] 16779#16786 epoll_wait(18): 1
2018/12/20 09:39:14.725 [debug] 16779#16786 epoll: fd:26 ev:0001 d:7F019C000CE0 rd:5 wr:0
2018/12/20 09:39:14.725 [debug] 16779#16786 timer expire minimum: 114726565:28326565
2018/12/20 09:39:14.725 [debug] 16779#16786 work queue: fast
2018/12/20 09:39:14.725 [debug] 16779#16786 recvmsg(26, -1, 2): 16
2018/12/20 09:39:14.725 [debug] 16779#16786 port 26: message type:1
2018/12/20 09:39:14.725 [debug] 16779#16786 free(7F019C00B980)
2018/12/20 09:39:14.725 [debug] 16779#16786 rpc: stream #25 last handler, type 1
2018/12/20 09:39:14.725 [debug] 16779#16786 http request error: 503
2018/12/20 09:39:14.725 [debug] 16779#16786 h1p request header send
2018/12/20 09:39:14.725 [debug] 16779#16786 mp 7F019C00BB10 retain: 3
2018/12/20 09:39:14.725 [debug] 16779#16786 pthread_mutex_lock(56281C11C440) enter
2018/12/20 09:39:14.725 [debug] 16779#16786 pthread_mutex_unlock(56281C11C440) exit
2018/12/20 09:39:14.725 [debug] 16779#16786 app 'app' 56281C11C440 requests queue is empty, keep the port
2018/12/20 09:39:14.725 [debug] 16779#16786 failed to cancel tracking for stream #25
2018/12/20 09:39:14.725 [debug] 16779#16786 mmap buf completion: 7F019C001800 [7F019ADFF000,16384] (sent=1), 16779->16884,0,1
2018/12/20 09:39:14.725 [debug] 16779#16786 mp 7F019C000B70 release: 1
2018/12/20 09:39:14.725 [debug] 16779#16786 timer add: 0±50 0:28326565
2018/12/20 09:39:14.725 [debug] 16779#16786 timer change: 28326565±50:1
2018/12/20 09:39:14.725 [debug] 16779#16786 rpc: stream #25 remove first and last pid 16884 registration (7F019C001008)
2018/12/20 09:39:14.725 [debug] 16779#16786 free(7F019C00B700)
2018/12/20 09:39:14.725 [debug] 16779#16786 rpc: stream #25 free registration
2018/12/20 09:39:14.725 [debug] 16779#16786 recvmsg(26, -1, 2): -1
2018/12/20 09:39:14.725 [debug] 16779#16786 recvmsg(26) not ready
2018/12/20 09:39:14.725 [debug] 16779#16786 epoll 18 set event: fd:26 op:3 ev:80002001
2018/12/20 09:39:14.725 [debug] 16779#16786 work queue: fast
2018/12/20 09:39:14.725 [debug] 16779#16786 http request send error body
2018/12/20 09:39:14.725 [debug] 16779#16786 malloc(136): 7F019C00B700
2018/12/20 09:39:14.725 [debug] 16779#16786 posix_memalign(128, 1024): 7F019C00C980
2018/12/20 09:39:14.725 [debug] 16779#16786 mp 7F019C00BB10 retain: 4
2018/12/20 09:39:14.725 [debug] 16779#16786 h1p request send
2018/12/20 09:39:14.725 [debug] 16779#16786 work queue: write
2018/12/20 09:39:14.725 [debug] 16779#16786 *33 conn write fd:13
2018/12/20 09:39:14.725 [debug] 16779#16786 *33 sendbuf: 0, 7F019C00C848, 136
2018/12/20 09:39:14.725 [debug] 16779#16786 *33 sendbuf: 1, 56281A946940, 67
2018/12/20 09:39:14.725 [debug] 16779#16786 *33 writev(13, 2): 203
2018/12/20 09:39:14.725 [debug] 16779#16786 *33 event conn: 203 sent:203
2018/12/20 09:39:14.725 [debug] 16779#16786 *33 timer disable: 0
2018/12/20 09:39:14.725 [debug] 16779#16786 work queue: fast
2018/12/20 09:39:14.725 [debug] 16779#16786 *33 h1p conn sent
2018/12/20 09:39:14.725 [debug] 16779#16786 work queue: fast
2018/12/20 09:39:14.725 [debug] 16779#16786 mp 7F019C00BB10 release: 3
2018/12/20 09:39:14.725 [debug] 16779#16786 work queue: fast
2018/12/20 09:39:14.725 [debug] 16779#16786 free(7F019C00B700)
2018/12/20 09:39:14.725 [debug] 16779#16786 free(7F019C00C980)
2018/12/20 09:39:14.725 [debug] 16779#16786 mp 7F019C00BB10 release: 2
2018/12/20 09:39:14.725 [debug] 16779#16786 work queue: fast
2018/12/20 09:39:14.725 [debug] 16779#16786 *33 http request done
2018/12/20 09:39:14.725 [debug] 16779#16786 *33 http request close handler
2018/12/20 09:39:14.725 [debug] 16779#16786 write(17, 7F019C00C800, 195): 195
2018/12/20 09:39:14.725 [debug] 16779#16786 mp 7F019C00BB10 release: 1
2018/12/20 09:39:14.725 [debug] 16779#16786 *33 h1p request close
2018/12/20 09:39:14.725 [debug] 16779#16786 *33 conf joint 56281C11D700 count: 2
2018/12/20 09:39:14.725 [debug] 16779#16786 *33 h1p keepalive
2018/12/20 09:39:14.725 [debug] 16779#16786 *33 setsockopt(13, 6, TCP_NODELAY): 1
2018/12/20 09:39:14.725 [debug] 16779#16786 free(7F019C00A600)
2018/12/20 09:39:14.725 [debug] 16779#16786 work queue: read
2018/12/20 09:39:14.725 [debug] 16779#16786 *33 conn read fd:13 rdy:0 cl:0
2018/12/20 09:39:14.725 [debug] 16779#16786 *33 timer add: 28506565±50 180000:28506565
2018/12/20 09:39:14.725 [debug] 16779#16786 *33 timer previous: 28506565±50
2018/12/20 09:39:14.725 [debug] 16779#16786 timers changes: 1
2018/12/20 09:39:14.725 [debug] 16779#16786 timer rbtree insert: 28326565±50
2018/12/20 09:39:14.725 [debug] 16779#16786 timer found minimum: 28326565±50:28326565
2018/12/20 09:39:14.725 [debug] 16779#16786 epoll 18 changes:1
2018/12/20 09:39:14.725 [debug] 16779#16786 epoll_ctl(18): fd:26 op:3 ev:80002001
2018/12/20 09:39:14.725 [debug] 16779#16786 epoll_wait(18) timeout:0
2018/12/20 09:39:14.725 [debug] 16779#16786 epoll_wait(18): 0
2018/12/20 09:39:14.725 [debug] 16779#16786 timer expire minimum: 28326515:28326565
2018/12/20 09:39:14.725 [debug] 16779#16786 timer expire delete: 28326565±50
2018/12/20 09:39:14.725 [debug] 16779#16786 work queue: fast
2018/12/20 09:39:14.725 [debug] 16779#16786 http app release
2018/12/20 09:39:14.725 [debug] 16779#16786 mp 7F019C00BB10 release: 0
2018/12/20 09:39:14.725 [debug] 16779#16786 free(7F019C0041E0)
2018/12/20 09:39:14.725 [debug] 16779#16786 free(7F019C002FF0)
2018/12/20 09:39:14.725 [debug] 16779#16786 free(7F019C00C080)
2018/12/20 09:39:14.725 [debug] 16779#16786 free(7F019C00B600)
2018/12/20 09:39:14.725 [debug] 16779#16786 free(7F019C00C500)
2018/12/20 09:39:14.725 [debug] 16779#16786 free(7F019C00BB10)
2018/12/20 09:39:14.725 [debug] 16779#16786 *33 timer found minimum: 28506565±50:28326565
2018/12/20 09:39:14.725 [debug] 16779#16786 epoll_wait(18) timeout:180000
2018/12/20 09:42:14.545 [debug] 16779#16786 epoll_wait(18): 0
2018/12/20 09:42:14.545 [debug] 16779#16786 timer expire minimum: 28506515:28506600
2018/12/20 09:42:14.545 [debug] 16779#16786 *33 timer expire delete: 28506565±50
2018/12/20 09:42:14.545 [debug] 16779#16786 work queue: fast
2018/12/20 09:42:14.545 [debug] 16779#16786 *33 h1p idle timeout
2018/12/20 09:42:14.545 [debug] 16779#16786 work queue: write
2018/12/20 09:42:14.545 [debug] 16779#16786 *33 conn write fd:13
2018/12/20 09:42:14.545 [debug] 16779#16786 *33 sendbuf: 0, 7F019C0031C8, 125
2018/12/20 09:42:14.545 [debug] 16779#16786 *33 send(13, 7F019C0031C8, 125): 125
2018/12/20 09:42:14.545 [debug] 16779#16786 *33 event conn: 125 sent:125
2018/12/20 09:42:14.545 [debug] 16779#16786 work queue: fast
2018/12/20 09:42:14.545 [debug] 16779#16786 *33 h1p conn sent
2018/12/20 09:42:14.545 [debug] 16779#16786 work queue: fast
2018/12/20 09:42:14.545 [debug] 16779#16786 *33 buf completion: 7F019C003180 7F019C0031C8
2018/12/20 09:42:14.545 [debug] 16779#16786 work queue: fast
2018/12/20 09:42:14.545 [debug] 16779#16786 *33 h1p idle timeout response sent
2018/12/20 09:42:14.545 [debug] 16779#16786 *33 h1p shutdown
2018/12/20 09:42:14.545 [debug] 16779#16786 *33 h1p conn closing
2018/12/20 09:42:14.545 [debug] 16779#16786 *33 conn close fd:13, to:0
2018/12/20 09:42:14.545 [debug] 16779#16786 work queue: shutdown
2018/12/20 09:42:14.545 [debug] 16779#16786 *33 conn shutdown handler fd:13
2018/12/20 09:42:14.545 [debug] 16779#16786 *33 shutdown(13, 2)
2018/12/20 09:42:14.545 [debug] 16779#16786 work queue: close
2018/12/20 09:42:14.545 [debug] 16779#16786 *33 conn close handler fd:13
2018/12/20 09:42:14.545 [debug] 16779#16786 *33 timer delete: 28506565±50
2018/12/20 09:42:14.545 [debug] 16779#16786 *33 timer delete: 0±50
2018/12/20 09:42:14.545 [debug] 16779#16786 *33 epoll 18 set event: fd:13 op:2 ev:0
2018/12/20 09:42:14.545 [debug] 16779#16786 *33 timer add: 0±50 0:28506600
2018/12/20 09:42:14.545 [debug] 16779#16786 *33 timer change: 28506600±50:1
2018/12/20 09:42:14.545 [debug] 16779#16786 timers changes: 1
2018/12/20 09:42:14.545 [debug] 16779#16786 *33 timer rbtree insert: 28506600±50
2018/12/20 09:42:14.545 [debug] 16779#16786 *33 timer found minimum: 28506600±50:28506600
2018/12/20 09:42:14.545 [debug] 16779#16786 epoll 18 changes:1
2018/12/20 09:42:14.545 [debug] 16779#16786 *33 epoll_ctl(18): fd:13 op:2 ev:0
2018/12/20 09:42:14.545 [debug] 16779#16786 epoll_wait(18) timeout:0
2018/12/20 09:42:14.545 [debug] 16779#16786 epoll_wait(18): 0
2018/12/20 09:42:14.545 [debug] 16779#16786 timer expire minimum: 28506550:28506600
2018/12/20 09:42:14.545 [debug] 16779#16786 *33 timer expire delete: 28506600±50
2018/12/20 09:42:14.545 [debug] 16779#16786 work queue: fast
2018/12/20 09:42:14.545 [debug] 16779#16786 *33 conn close timer handler fd:13
2018/12/20 09:42:14.545 [debug] 16779#16786 *33 socket close(13)
2018/12/20 09:42:14.545 [debug] 16779#16786 work queue: fast
2018/12/20 09:42:14.545 [debug] 16779#16786 *33 h1p conn free
2018/12/20 09:42:14.545 [debug] 16779#16786 mp 7F019C00B510 release: 0
2018/12/20 09:42:14.545 [debug] 16779#16786 free(7F019C0029A0)
2018/12/20 09:42:14.545 [debug] 16779#16786 free(7F019C00B180)
2018/12/20 09:42:14.545 [debug] 16779#16786 free(7F019C003080)
2018/12/20 09:42:14.545 [debug] 16779#16786 free(7F019C00B510)
2018/12/20 09:42:14.545 [debug] 16779#16786 listen event count: 2
2018/12/20 09:42:14.545 [debug] 16779#16786 epoll_wait(18) timeout:-1
enhancement
Source
picture wind930
👍5 👀1

Most helpful comment

I'm agree with @akshaybabloo. There is a start of specifications here.

@VBart Have you rethink about that ? Would that be a lot of work?

picture melck on 21 Oct 2019
👍5

All 6 comments

Currently only WSGI is supported as specified by PEP 333 and 3333. No other interfaces are supported right now.

VBart picture VBart on 9 Jan 2019

It will be good to have this. Starting from Django 3.0, it will have async features

akshaybabloo picture akshaybabloo on 13 Oct 2019
👍2

I'm agree with @akshaybabloo. There is a start of specifications here.

@VBart Have you rethink about that ? Would that be a lot of work?

melck picture melck on 21 Oct 2019
👍5

Any news on this subject ?

melck picture melck on 14 Mar 2020

Also looking for this feature

stas-dubrovskyi picture stas-dubrovskyi on 29 Jun 2020

Coming soon... Get ready and track #461 issue.

mar0x picture mar0x on 17 Sep 2020
🎉1
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