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from zope.interface import implements
from repoze.bfg.interfaces import IAfterTraversal
from repoze.bfg.interfaces import INewRequest
from repoze.bfg.interfaces import INewResponse
from repoze.bfg.interfaces import IWSGIApplicationCreatedEvent
class NewRequest(object):
""" An instance of this class is emitted as an :term:`event`
whenever :mod:`repoze.bfg` begins to process a new request. The
instance has an attribute, ``request``, which is a :term:`request`
object. This class implements the
:class:`repoze.bfg.interfaces.INewRequest` interface."""
implements(INewRequest)
def __init__(self, request):
self.request = request
class NewResponse(object):
""" An instance of this class is emitted as an :term:`event`
whenever any :mod:`repoze.bfg` view returns a :term:`response`.
The instance has an attribute, ``response``, which is the response
object returned by the view. This class implements the
:class:`repoze.bfg.interfaces.INewResponse` interface.
.. note::
Postprocessing a response is usually better handled in a WSGI
:term:`middleware` component than in subscriber code that is
called by a :class:`repoze.bfg.interfaces.INewResponse` event.
The :class:`repoze.bfg.interfaces.INewResponse` event exists
almost purely for symmetry with the
:class:`repoze.bfg.interfaces.INewRequest` event.
"""
implements(INewResponse)
def __init__(self, response):
self.response = response
class AfterTraversal(object):
implements(IAfterTraversal)
""" An instance of this class is emitted as an :term:`event` after
the :mod:`repoze.bfg` :term:`router` performs traversal but before
any view code is executed. The instance has an attribute,
``request``, which is the request object generated by
:mod:`repoze.bfg`. Notably, the request object will have an
attribute named ``context``, which is the context that will be
provided to the view which will eventually be called, as well as
other attributes defined by the traverser. This class implements
the :class:`repoze.bfg.interfaces.IAfterTraversal` interface."""
def __init__(self, request):
self.request = request
class WSGIApplicationCreatedEvent(object):
""" An instance of this class is emitted as an :term:`event` when
the :meth:`repoze.bfg.configuration.Configurator.make_wsgi_app` is
called. The instance has an attribute, ``app``, which is an
instance of the :term:`router` that will handle WSGI requests.
This class implements the
:class:`repoze.bfg.interfaces.IWSGIApplicationCreatedEvent`
interface."""
implements(IWSGIApplicationCreatedEvent)
def __init__(self, app):
self.app = app
self.object = app
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