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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 from google.appengine.runtime.apiproxy_errors import CapabilityDisabledError |
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26 |
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27 from django import http |
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28 from django.utils.translation import ugettext |
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29 |
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30 from soc.views.helper import responses |
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31 |
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32 |
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33 DEF_DOWN_FOR_MAINTENANCE_MSG = ugettext("Down for maintenance") |
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34 DEF_IN_UNEXPECTED_MAINTENANCE_MSG = ugettext( |
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35 "Down for unexpected maintenance.") |
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36 |
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37 |
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38 class MaintenanceMiddleware(object): |
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39 """Middleware to handle maintenance mode. |
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40 """ |
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41 |
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42 def maintenance(self, request): |
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43 """Returns a 'down for maintenance' view. |
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44 """ |
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45 |
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46 context = responses.getUniversalContext(request) |
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47 context['page_name'] = ugettext('Maintenance') |
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48 |
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49 notice = context.pop('site_notice') |
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50 |
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51 if not notice: |
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52 context['body_content'] = DEF_IN_UNEXPECTED_MAINTENANCE_MSG |
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53 else: |
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54 context['body_content'] = notice |
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55 |
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56 context['header_title'] = DEF_DOWN_FOR_MAINTENANCE_MSG |
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57 context['sidebar_menu_items'] = [ |
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58 {'heading': DEF_DOWN_FOR_MAINTENANCE_MSG, |
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59 'group': ''}, |
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60 ] |
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61 |
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62 template = 'soc/base.html' |
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63 |
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64 return responses.respond(request, template, context=context) |
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65 |
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66 def process_request(self, request): |
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67 context = responses.getUniversalContext(request) |
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68 |
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69 if not context['is_admin'] and context['in_maintenance']: |
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70 return self.maintenance(request) |
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71 |
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72 def process_exception(self, request, exception): |
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73 if isinstance(exception, CapabilityDisabledError): |
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74 # assume the site is in maintenance if we get CDE |
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75 return maintenance(request) |
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76 |
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77 # let the exception handling middleware handle it |
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78 return None |