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import werkzeug

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from werkzeug.wrappers import Request, Response

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from werkzeug.exceptions import HTTPException

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import logging; log = logging.getLogger('pvl.verkko.wsgi')

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from pvl.verkko import db as database, urls, web

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class Application (object) :

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    urls = urls.urls

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    def __init__ (self, db) :

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        """

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            Initialize app with db.

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        """

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        self.db = database.Database(db)

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    def respond (self, request) :

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        """

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            Lookup Request -> web.Handler, params

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        """

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        # bind to request

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        urls = self.urls.bind_to_environ(request)

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        # lookup

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        handler, params = urls.match()

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        # handler instance

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        handler = handler(self, request, urls, params)

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    @Request.application

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    def __call__ (self, request) :

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        """

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            WSGI entry point, werkzeug Request -> Response

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        """

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        try :

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            return self.respond(request)

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        except HTTPException as ex :

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            return ex

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