implemented configurable housekeeping

models/feed.py

@@ -1,6 +1,6 @@
 from sqlalchemy import Column, Integer, String, Boolean, Enum
 from sqlalchemy.orm import relationship, backref
-from datetime import datetime
+from datetime import datetime, timedelta
 import feedparser
 import sys
 
@@ -15,6 +15,7 @@ class Feed(Base):
     id = Column(Integer, primary_key=True)
     url = Column(String(255))
     frequency = Column(Integer)
+    keepdaysafterlastfetch = Column(Integer, default=30)
     daily = Column(Boolean)
     resolveredirects = Column(Boolean)
     readability = Column(Boolean)
@@ -100,6 +101,16 @@ class Feed(Base):
                     self.entries.append(Entry(entry, self))
                     entries_new += 1
             print 'updated %d of %d entries' % (entries_new, entries_total)
+            self.housekeeper(session)
+
+    def housekeeper(self, session):
+        count = 0
+        for entry in self.entries:
+            if entry.lastfetched < (datetime.now() - timedelta(days=self.keepdaysafterlastfetch)):
+                session.delete(entry)
+                count += 1
+        if count > 0:
+            print 'housekeeper deleted %d entries older than %d days.' % (count, self.keepdaysafterlastfetch)
 
     def reset(self):
         self.entries[:] = []