Mercurial > hg > Feedworm

annotate backend/couchdb/CouchDbBackend.py @ 166:04c3b9796b89

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feedparser uses the proxy now if one is configured. To implement this the FeedUpdater had to change a bit - sqlalchemy backend is not yet refactored.
author dirk
date Sat, 03 Sep 2011 04:12:35 +0200
parents 3eeda7cec39b
children 91a24f499318
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2 from FeedUpdater import FeedUpdater
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3 from Preferences import Preferences
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4 from backend.AbstractBackend import AbstractBackend
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5 from backend.couchdb.Feed import Feed
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6 from backend.couchdb.FeedEntry import FeedEntry
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7 import couchdb
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8
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9 DATABASE = "feedtest"
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11 class CouchDbBackend(AbstractBackend):
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12 '''
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13 Backend that uses CouchDB for persistence
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14 '''
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16 def __init__(self):
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17 server = couchdb.Server()
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18 self.database = server[DATABASE]
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19 self.prefs = None
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21 def preferences(self):
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22 if self.prefs is None:
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23 self.prefs = Preferences(self.database)
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24 return self.prefs
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26 #
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27 # handling of feeds
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28 #
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30 def getFeeds(self):
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31 if self.preferences().showOnlyUnreadFeeds():
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32 self.feeds = self._getUnreadFeeds()
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33 else:
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34 # make sure that the results are actually fetched into memory, otherwise we'll pass
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35 # a ViewResults instance around which is not what we want
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36 self.feeds = list(Feed.all(self.database))
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37 return self.feeds
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39 def _getUnreadFeeds(self):
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40 raise Exception("not yet implemented")
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42 def _retrieveEntriesForSelectedFeed(self, hideReadEntries):
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43 # TODO how to hide read entries if requested?
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44 viewResults = FeedEntry.view(self.database, "feedtest/feedEntries_by_feed",
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45 key=self.selectedFeed.id)
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46 return list(viewResults)
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48 def markSelectedFeedAsRead(self):
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49 for feedEntry in self.entriesForSelectedFeed():
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50 feedEntry.markRead(self.database)
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52 #
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53 # handling of the selected feed entry
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54 #
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56 def _markSelectedFeedEntryRead(self):
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57 self.selectedFeedEntry.markRead(self.database)
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59 def toggleSelectedFeedEntryRead(self):
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60 self.selectedFeedEntry.toggleRead(self.database)
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63 def toggleRead(self, feedEntry):
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64 raise Exception("not yet implemented")
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66 def markAllEntriesRead(self, feed):
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67 raise Exception("not yet implemented")
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69 def createFeed(self, url):
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70 feed = Feed.create(url)
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71 feed.store(self.database)
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72 FeedUpdater(self.database, self.preferences()).update(feed)
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74 def updateFeed(self, feed, changes):
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75 for key in changes.keys():
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76 feed[key] = changes[key]
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77 feed.store(self.database)
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78
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79 def deleteSelectedFeed(self):
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80 viewResults = self.database.view("feedtest/feedEntries_by_feed", key=self.selectedFeed.id)
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81 for row in viewResults:
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82 del self.database[row.id]
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83 del self.database[self.selectedFeed.id]
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85 def entriesForFeed(self, feed, hideReadEntries):
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86 viewName = "feedtest/feedEntries_by_feed"
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87 if hideReadEntries:
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88 viewName = "feedtest/unread_feedEntries_by_feed"
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89 return list(FeedEntry.view(self.database, viewName))
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91 def markFeedEntriesAsRead(self, indices):
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92 for index in indices:
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93 feedEntry = self.entriesForSelectedFeed()[index]
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94 feedEntry.markRead(self.database)
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96 def updateAllFeeds(self):
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97 # TODO use a view instead of iterating all feeds
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98 allFeeds = Feed.all(self.database)
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99 for feed in allFeeds:
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100 if feed.needsUpdate():
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101 FeedUpdater(self.database, self.preferences()).update(feed)
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103 def expireFeedEntries(self):
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104 print("Expiring feeds is not yet implemented")
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105 # raise Exception("not yet implemented")
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