mod_wsgi force reload modules

Question

Is there a way to have mod_wsgi reload all modules (maybe in a particular directory) on each load?

While working on the code, it\'s very annoying to restart apache every

Answer 1

I know it's an old thread but this might help someone. To kill your process when any file in a certain directory is written to, you can use something like this:

monitor.py

import os, sys, time, signal, threading, atexit
import inotify.adapters

def _monitor(path):

    i = inotify.adapters.InotifyTree(path)

    print "monitoring", path
    while 1:
        for event in i.event_gen():
            if event is not None:
                (header, type_names, watch_path, filename) = event
                if 'IN_CLOSE_WRITE' in type_names:
                    prefix = 'monitor (pid=%d):' % os.getpid()
                    print "%s %s/%s changed," % (prefix, path, filename), 'restarting!'
                    os.kill(os.getpid(), signal.SIGKILL)

def start(path):

    t = threading.Thread(target = _monitor, args = (path,))
    t.setDaemon(True)
    t.start()

    print 'Started change monitor. (pid=%d)' % os.getpid()

In your server startup, call it like:

server.py

import monitor

monitor.start()

if your main server file is in the directory which contains all your files, you can go like:

monitor.start(os.path.dirname(__file__))

Adding other folders is left as an exercise...

You'll need to 'pip install inotify'

This was cribbed from the code here: https://code.google.com/archive/p/modwsgi/wikis/ReloadingSourceCode.wiki#Restarting_Daemon_Processes

This is an answer to my duplicate question here: WSGI process reload modules