use uWSGI for justpy web deployment -- possible?

[sandeep-gh]

There are too many web deployment framework and I am bit confused about which to use and which one is suitable. For various reasons, I settled on httpd(OpenBSD) and uWSGI. I tried uWSGI (with gevent support) but it seems to be not compatible with justpy. I get error

TypeError: Starlette.__call__() missing 1 required positional argument: 'send'
[pid: 63739|app: 0|req: 1/1] 127.0.0.1 () {24 vars in 263 bytes} [Thu Oct 14 19:19:26 2021] GET / => generated 0 bytes in 1 msecs (HTTP/1.1 500) 0 headers in 0 bytes (1 switches on core 1)

Is it possible to deploy justpy using uWSGI. It does seem to have async support. Is the use of uvicorn necessary? My understanding in web deployment is bit limited, so any pointers, suggestions, clarification would be great.

Thanks -S

[elimintz]

JustPy requires a server that supports ASGI as it based on Starlette: https://www.starlette.io/

[knoxvilledatabase]

I have had success using Centos, pipenv, apache, and systemctl services. I'm willing to send you my configurations if you would like help getting a production environment setup, for example, here is the Apache config, just let me know what else you need:

<VirtualHost *:80>
    ServerName whatever_your_server_name_is
    ServerAlias whatever_your_ip_address_is
    ProxyPreserveHost On
    RewriteEngine On
    RewriteRule ^(.*)$  https://whatever_your_ip_address_is$1 [R=301]
    RewriteCond %{SERVER_NAME} =whatever_your_server_name_is [OR]
    RewriteCond %{SERVER_NAME} =whatever_your_ip_address_is
    RewriteRule ^ https://%{SERVER_NAME}%{REQUEST_URI} [END,NE,R=permanent]
</VirtualHost>

<VirtualHost *:443>
    ServerAdmin webmaster@yourdomain.com
    ServerName whatever_your_server_name_is
    ServerAlias whatever_your_ip_address_is
    DocumentRoot /var/www/html
    SSLEngine on
    ProxyPreserveHost On
    RequestHeader set X-Forwarded-Proto https
    RewriteEngine on
    RewriteCond %{HTTP:CONNECTION} ^Upgrade$ [NC]
    RewriteCond %{HTTP:Upgrade} =websocket
    RewriteRule /(.*) ws://127.0.0.1:8000/$1 [P,QSA,L]
    RewriteCond %{HTTP:Upgrade} !=websocket
    RewriteRule /(.*) http://127.0.0.1:8000/$1 [P,QSA,L]
    ErrorLog /var/log/httpd/error.log
    CustomLog /var/log/httpd/access.log combined
    SSLCertificateFile /usr/local/public.crt
    SSLCertificateKeyFile /usr/local/private.key
    SSLCertificateChainFile /usr/local/intermediate.crt
</VirtualHost>

[sandeep-gh]

Spend fair part of the day figuring out the various web deployment stacks. Long story short, i think if I can make Starlette app run in the same context as shown in this SO answer then I think I plug this in uWSGI framework. Otherwise i have to give up on httpd/uwsgi stack and move to nginx+gunicorn which is not preferred.

The key part of that SO answer is

app = web.Application()
app.add_routes([web.get('/', handle),
web.get('/{name}', handle)])
runner = web.AppRunner(app)
await runner.setup()
sock = mk_socket(host, port, reuseport=reuseport)
srv = web.SockSite(runner, sock)
await srv.start()

For the web.Application there is web.AppRunner which is bound to a socket by web.SockSite. I am not sure how to do the same/equivalent for Starlette app. All Starlette app is run via uvicorn which itself creates a socket on the host+port. I need something that can bind to existing socket.