Create a Chaussette Backend about bjoern HOT 20 CLOSED

I understand that Chaussette is a WSGI server which bjoern is. So what is the benefit to integrate them together?

from bjoern.

Chaussette is not a WSGI server, it is a WSGI Server wrapper that let give the socket fd as a parameter and use the WSGI server you want to serve the wsgi app.
The aim of adding the bjoern backend is to be able to run a wsgi app using bjoern server.

This is really useful to let circusd server your app using bjoern backend for example.

from bjoern.

Here is a circusd configuration example that I would like to be able to use.

[watcher:webworker]
cmd = chaussette --fd $(circus.sockets.webapp) --backend bjoern project.wsgi.application
use_sockets = True
copy_env = True
warmup_delay = 0
numprocesses = 3

[socket:webapp]
host = 127.0.0.1
port = 8888

from bjoern.

So as you explained, Chaussette will sit in front of bjoern. circus will open server socket to accept client connections and pass those connections to Chaussette. Then Chaussette passes them to bjoern

Is that correct?

So many indirections to me. Whap happens if I can pass the file descriptor directly to bjoern without using Chaussette as an intermediate layer?

from bjoern.

Yes it would works but then you will rewrite most of the chaussette layer for your bjoern-chaussette like command.

chaussette is a cli command not a python library.

The aim is to be able to run a bjoern WSGI server from the CLI using chaussette

from bjoern.

https://gist.github.com/jonashaag/6548722

bjoern currently doesn't support integer socket fds as argument to listen/run but this could be added easily.

from bjoern.

Ok thank you that could be really nice to add the fd argument :)

from bjoern.

👍

from bjoern.

In case of a file descriptor being passed, does Chausette expect the web server to bind() or is this handled by Chausette?

from bjoern.

this is handled by Chaussette. The goal is to set up a pref-fork model where we bind a socket, then fork bjoern workers that accept connection on it - so the system takes care of the load balancing

from bjoern.

@jonashaag Are you planning to implement the fd?

from bjoern.

I've begun work on the implementation weeks ago but never really come to finishing it. I'll try to fit it in somewhen in the next few days... no promises...

from bjoern.

Thank you for this.

from bjoern.

Just a quick heads-up: I finished implementation (mostly refactoring) and I'm going to test it thoroughly the next few days. It'll be part of the next release

from bjoern.

Awesome! Python web apps will be much faster now... :)

On Thursday, November 28, 2013, Jonas Haag wrote:

Just a quick heads-up: I finished implementation (mostly refactoring) and
I'm going to test it thoroughly the next few days. It'll be part of the
next release

—
Reply to this email directly or view it on GitHubhttps://github.com//issues/73#issuecomment-29457031
.

• Gustavo Gawryszewski [email protected] [email protected] +55
  21 4106-0075 | +55 21 9498-7923 www.tactio.com.br
  http://www.tactio.com.br/ *

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from bjoern.

👍

from bjoern.

Was this published in pypi? I was trying to write the chaussette part but I couldn't compile from source on my machine neighter get it from pypi

from bjoern.

It's not on PyPI yet. Could you post the compilation errors you get?

from bjoern.

Ok, I managed to compile but I couldnt load bjoern.

When I've tried to install with pip I couldn't load bjoern.

pip install -e [email protected]:jonashaag/bjoern.git#egg=bjoern

then I get this error

import bjoern
Traceback (most recent call last):
File "", line 1, in
ImportError: dynamic module does not define init function (initbjoern)

and when I cloned the repository and then python setup.py install thats what I got when trying to import bjoern.

import bjoern
Traceback (most recent call last):
File "", line 1, in
File "bjoern.py", line 3, in
import _bjoern
ImportError: No module named _bjoern

from bjoern.

I haven't updated the setup script yet.

What you need to do is make. That will create a build/_bjoern.so file. You need to add build to your Python path when you import the module, e.g.

make
PYTHONPATH=build python2

from bjoern.