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annotate makeitso/dispatcher.py @ 45:3bf29175907c

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actually introduce a variable for the script
author Jeff Hammel <jhammel@mozilla.com>
date Wed, 05 Jan 2011 18:09:32 -0800
parents 6d1c703c5ffc
children 1b9573832f33
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14
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1 """
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2 request dispatcher:
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3 data persisting across requests should go here
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4 """
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5
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6 from handlers import Index
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7 from webob import Request, Response, exc
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8
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9 class Dispatcher(object):
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10
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11 ### class level variables
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12 defaults = { 'app': None, }
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14 def __init__(self, **kw):
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15
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16 # set instance parameters from kw and defaults
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17 for key in self.defaults:
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18 setattr(self, key, kw.get(key, self.defaults[key]))
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19
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20 # request handlers
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21 self.handlers = [ Index ]
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22
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23 # endpoint app if used as middleware
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24 if self.app:
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25 assert hasattr(self.app, '__call__')
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26
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27 def __call__(self, environ, start_response):
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28
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29 # get a request object
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30 request = Request(environ)
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31
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32 # get the path
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33 path = request.path_info.strip('/').split('/')
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34 if path == ['']:
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35 path = []
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36 request.environ['path'] = path
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37
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38 # match the request to a handler
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39 for h in self.handlers:
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40 handler = h.match(self, request)
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41 if handler is not None:
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42 break
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43 else:
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44 if self.app:
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45 return self.app(environ, start_response)
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46 handler = exc.HTTPNotFound
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47
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48 # get response
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49 res = handler()
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50 return res(environ, start_response)