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1 #!/usr/bin/python2.5 |
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2 # |
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3 # Copyright 2009 the Melange authors. |
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4 # |
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5 # Licensed under the Apache License, Version 2.0 (the "License"); |
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6 # you may not use this file except in compliance with the License. |
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7 # You may obtain a copy of the License at |
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8 # |
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9 # http://www.apache.org/licenses/LICENSE-2.0 |
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10 # |
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11 # Unless required by applicable law or agreed to in writing, software |
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12 # distributed under the License is distributed on an "AS IS" BASIS, |
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13 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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14 # See the License for the specific language governing permissions and |
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15 # limitations under the License. |
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16 |
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17 """Middleware to handle exceptions. |
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18 """ |
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19 |
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20 __authors__ = [ |
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21 '"Sverre Rabbelier" <sverre@rabbelier.nl>', |
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22 ] |
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23 |
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24 |
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25 import logging |
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26 |
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27 from google.appengine.runtime import DeadlineExceededError |
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28 from google.appengine.runtime.apiproxy_errors import CapabilityDisabledError |
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29 |
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30 from django import http |
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31 |
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32 from soc.views.helper import responses |
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33 from soc.views import out_of_band |
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34 |
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35 |
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36 class ExceptionHandlerMiddleware(object): |
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37 """Middleware class to handle exceptions.. |
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38 """ |
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39 |
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40 def process_exception(self, request, exception): |
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41 template = None |
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42 context = responses.getUniversalContext(request) |
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43 |
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44 if isinstance(exception, DeadlineExceededError): |
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45 template = 'soc/deadline_exceeded.html' |
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46 if isinstance(exception, MemoryError): |
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47 template = 'soc/memory_error.html' |
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48 if isinstance(exception, AssertionError): |
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49 template = 'soc/assertion_error.html' |
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50 if isinstance(exception, out_of_band.Error): |
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51 return responses.errorResponse(error, request) |
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52 |
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53 if template: |
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54 logging.exception(exception) |
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55 return responses.respond(request, template, context=context) |
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56 |
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57 # let Django handle it |
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58 return None |