app/soc/views/helper/decorators.py
author Pawel Solyga <Pawel.Solyga@gmail.com>
Thu, 16 Oct 2008 23:31:57 +0000
changeset 365 74dec172944e
child 367 5d5730f65fc8
permissions -rw-r--r--
Create decorators module in view/helper and add view decorator that catches exceptions like DeadlineExceededError, MemoryError, AssertionError (this code is being moved from respond function). Add view decorator to all view functions. In addition remove not needed imports from all affected files and fix too long lines. Patch by: Pawel Solyga Review by: to-be-reviewed

#!/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(request, *args, **kwds):
    try:
      return func(request, *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