django.core.management.base.py, commands 的基类,定义了几个基础接口
django.core.management.[commands], 里面实现了 startproject, runserver 等所有的 commands
django.core.management.__init__.py 中的 execute_manager() 是所有逻辑的入口。
python manager.py runserver ip:port ==>
django.core.management.__init__.py
django.core.management.commands.runserver.py
django.core.servers.basehttp.run()
httpd = WSGIServer(server_address, WSGIRequestHandler)
httpd.set_app(wsgi_handler) # wsgi_handler = AdminMediaHandler(WSGIHandler(), path)
httpd.serve_forever() # django.core.handlers.wsgi.WSGIHandler
http request =>
django.core.servers.basehttp.WSGIRequestHandler.handle()
django.core.servers.basehttp.ServerHandler.run()
django.core.servers.basehttp.AdminMediaHandler.__call__()
django.core.handlers.wsgi.WSGIHandler.__call__()
request = self.request_class(environ)
response = self.get_response(request)
django.core.handlers.base.BaseHandler.get_response()
resolver = urlresolvers.RegexURLResolver(r'^/', urlconf)
callback, callback_args, callback_kwargs = resolver.resolve(request.path_info)
response = callback(request, *callback_args, **callback_kwargs)
django.core.servers.basehttp.ServerHandler.run(), response 会被一路 return,到达这里后,拼接,再发回给浏览器。
我们的小程序 helloworld.index() 就是上面的 callback 函数。
-------------------------------------------------
# urls.py
urlpatterns = patterns('',
(r'^hello/$', 'foobar.helloworld.index'),
)
-------------------------------------------------
# helloworld.py
from django.http import HttpResponse
def index(request):
return HttpResponse("Hello Django!")
-------------------------------------------------
WSGI 是啥,看:
http://cvs.woodpecker.org.cn/svn/woodpecker/pureprolog/trunk/essay/wsgiinto/wsgi_into.htmlhttp://wiki.python.org/moin/WSGIImplementations
评论