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1 #!/usr/bin/python2.5 |
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2 # |
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3 # Copyright 2008 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 """Module contains sidebar memcaching functions. |
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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.api import memcache |
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26 from google.appengine.api import users |
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27 |
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28 import soc.cache.base |
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29 |
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30 |
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31 def key(user): |
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32 """Returns the memcache key for the user's sidebar |
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33 """ |
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34 |
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35 return 'sidebar_for_%s' % repr(user) |
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36 |
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37 |
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38 def get(): |
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39 """Retrieves the sidebar for the specified user from the memcache |
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40 """ |
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41 |
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42 user = users.get_current_user() |
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43 return memcache.get(key(user)) |
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44 |
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45 |
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46 def put(sidebar): |
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47 """Sets the sidebar for the specified user in the memcache |
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48 |
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49 Args: |
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50 sidebar: the sidebar to be cached |
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51 """ |
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52 |
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53 # Store sidebar for an hour since new programs might get added |
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54 # etc. etc. |
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55 retention = 60*60 |
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56 |
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57 user = users.get_current_user() |
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58 memcache.add(key(user), sidebar, retention) |
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59 |
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60 |
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61 def flush(user=None): |
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62 """Removes the sidebar for the current user from the memcache |
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63 |
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64 Args: |
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65 user: defaults to the current user if not set |
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66 """ |
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67 |
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68 if not user: |
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69 user = users.get_current_user() |
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70 |
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71 memcache.delete(key(user)) |
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72 |
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73 |
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74 # define the cache function |
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75 cache = soc.cache.base.getCacher(get, put) |