django 多线程

from:  http://onlypython.group.iteye.com/group/wiki/1516-use-cherrypy-as-django-s-development-server

该多线程是指多线程development server

1. 

修改Django自带的Development Server为多线程模式，这其实只需要改几行代码就可以了。（详见http://code.djangoproject.com/ticket/3357 ）

 

打开文件 django/core/servers/basehttp.py

第10行：

from BaseHTTPServer import BaseHTTPRequestHandler, HTTPServer

修改为

from BaseHTTPServer import BaseHTTPRequestHandler

 

在所有的 import 语句之后加上以下代码：

 import BaseHTTPServer, SocketServer
 class HTTPServer(SocketServer.ThreadingMixIn, BaseHTTPServer.HTTPServer):
     def __init__(self, server_address, RequestHandlerClass=None):
         BaseHTTPServer.HTTPServer.__init__(self, server_address, RequestHandlerClass)

 

是的，这样就可以了。 但是他还有一个小问题就是它不是线程安全的。可能在请求很多时会出现数据不同步，当然，这一般不是问题，因为我们通常只在自己机器上调试时才用Development Server。

2.

使用CherryPy 作为 Development Server

在安装好CherryPy 之后，将以下代码保存为文件runservercp.py

 from django.core.management.base import BaseCommand, CommandError
 from optparse import make_option
 import os, sys
 import cherrypy
 from cherrypy import wsgiserver
 class Command(BaseCommand):
     option_list = BaseCommand.option_list + (
         make_option('--noreload', action='store_false', dest='use_reloader', default=True,
             help='Tells Django to NOT use the auto-reloader.'),
         make_option('--adminmedia', dest='admin_media_path', default='',
             help='Specifies the directory from which to serve admin media.'),
     )
     help = "Starts a lightweight Web server for development."
     args = '[optional port number, or ipaddr:port]'

     # Validation is called explicitly each time the server is reloaded.
     requires_model_validation = False

     def handle(self, addrport='', *args, **options):
         import django
         from django.core.servers.basehttp import AdminMediaHandler
         from django.core.handlers.wsgi import WSGIHandler
         if args:
             raise CommandError('Usage is runservercp %s' % self.args)
         if not addrport:
             addr = ''
             port = '8000'
         else:
             try:
                 addr, port = addrport.split(':')
             except ValueError:
                 addr, port = '', addrport
         if not addr:
             addr = '127.0.0.1'

         if not port.isdigit():
             raise CommandError("%r is not a valid port number." % port)

         use_reloader = options.get('use_reloader', True)
         admin_media_path = options.get('admin_media_path', '')
         shutdown_message = options.get('shutdown_message', '')
         quit_command = (sys.platform == 'win32') and 'CTRL-BREAK' or 'CONTROL-C'

         def inner_run():
             from django.conf import settings
             from django.utils import translation
             print "\nValidating models..."
             self.validate(display_num_errors=True)
             print "\nDjango version %s, using settings %r" % (django.get_version(), settings.SETTINGS_MODULE)
             print "Development server is running at http://%s:%s/" % (addr, port)
             print "Quit the server with %s." % quit_command

             # django.core.management.base forces the locale to en-us. We should
             # set it up correctly for the first request (particularly important
             # in the "--noreload" case).
             translation.activate(settings.LANGUAGE_CODE)

             try:
                 path = admin_media_path or django.__path__[0] + '/contrib/admin/media'
                 handler = AdminMediaHandler(WSGIHandler(), path)
                 cherrypy.config.update({
                         'server.socket_host': addr,
                         'server.socket_port': int(port),
                         'engine.autoreload_on':  use_reloader
                     })

                 cherrypy.tree.graft(handler, '/')

                 cherrypy.engine.start()
                 cherrypy.engine.block()
             finally:
                 if shutdown_message:
                     print shutdown_message
                 cherrypy.engine.exit()
         inner_run()

 

将该文件放到djang源代码目录 django\core\management\commands 下，这样运行命令

python manage.py runservercp

时就使用了CherryPy 作为服务器了，其中命令名是根据文件的名字而定的，因为该文件保存为runservercp.py，所以命令名为 runservercp。

另外放在django的源代码目录的好处是所有的django project都可以使用该命令使用到CherryPy 。