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annotate FeedUpdater.py @ 26:f9a3223182c5

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author Dirk Olmes <dirk@xanthippe.ping.de>
date Thu, 29 Apr 2010 06:47:22 +0200
parents e87c54b3a216
children bdd1296a4b8c
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e0199f383442 retrieve a feed for the given URL, store entries as feed_entry rows into the database
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2 from datetime import datetime
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3 from Feed import Feed
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4 from FeedEntry import FeedEntry
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5 import feedparser
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6 import logging
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8 STATUS_OK = 200
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9 logger = logging.getLogger("FeedUpdater")
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11 def updateAllFeeds(session):
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12 allFeeds = session.query(Feed)
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13 for feed in allFeeds:
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14 try:
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15 FeedUpdater(session, feed).update()
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16 except FeedUpdateException:
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17 logger.warn("problems while updating feed " + feed.rss_url)
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18 session.commit()
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20 class FeedUpdater(object):
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21 def __init__(self, session, feed):
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22 self.session = session
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23 self.feed = feed
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25 def update(self):
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26 result = self.getFeed()
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27 for entry in result.entries:
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28 self.processEntry(entry)
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30 def getFeed(self):
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31 result = feedparser.parse(self.feed.rss_url)
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32 if result["status"] is not STATUS_OK:
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33 raise FeedUpdateException()
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34 return result
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36 def processEntry(self, entry):
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37 feedEntry = FeedEntry.findById(entry.id, self.session)
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38 if feedEntry is None:
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39 self.createFeedEntry(entry)
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41 def createFeedEntry(self, entry):
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42 new = FeedEntry()
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43 new.id = entry.id
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44 new.link = entry.link
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45 new.title = entry.title
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46 new.updated = datetime(*entry.updated_parsed[:6])
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47 new.summary = entry.summary
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48 new.feed = self.feed
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49 self.session.add(new)
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51 class FeedUpdateException(Exception):
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52 pass