#!/usr/bin/python2.5

#

# Copyright 2008 the Melange authors.

#

# Licensed under the Apache License, Version 2.0 (the "License");

# you may not use this file except in compliance with the License.

# You may obtain a copy of the License at

#

#   http://www.apache.org/licenses/LICENSE-2.0

#

# Unless required by applicable law or agreed to in writing, software

# distributed under the License is distributed on an "AS IS" BASIS,

# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

# See the License for the specific language governing permissions and

# limitations under the License.

"""Views decorators.

"""

__authors__ = [

  '"Pawel Solyga" <pawel.solyga@gmail.com>',

  ]

import logging

from functools import wraps

from google.appengine.runtime import DeadlineExceededError

from django import http

def view(func):

  """Decorator that insists that exceptions are handled by view.

  """

  @wraps(func)

  def view_wrapper(*args, **kwds):

    try:

      return func(*args, **kwds)

    except DeadlineExceededError:

      logging.exception('DeadlineExceededError')

      return http.HttpResponse('DeadlineExceededError')

    except MemoryError:

      logging.exception('MemoryError')

      return http.HttpResponse('MemoryError')

    except AssertionError:

      logging.exception('AssertionError')

      return http.HttpResponse('AssertionError')

  return view_wrapper