fuzzied time between feed fetches

models/feedinfo.py

@@ -3,7 +3,8 @@
 
 from sqlalchemy import Column, Integer, ForeignKey, String, DateTime
 from sqlalchemy.orm import relation, backref
-from datetime import datetime
+from datetime import datetime, timedelta
+from random import randint
 
 from models import Base
 
@@ -25,6 +26,7 @@ class Feedinfo(Base):
 
     lastfetched = Column(DateTime)
     lastsuccessful = Column(DateTime)
+    nextfetch = Column(DateTime)
 
     def __init__(self, parser):
         self.update(parser)
@@ -50,3 +52,6 @@ class Feedinfo(Base):
         self.lastfetched = datetime.now()
         if parser.get('status') == 200 or parser.get('status') == 302:
             self.lastsuccessful = datetime.now()
+        waitminutes = randint(int(self.feed.frequency * .75), int(self.feed.frequency * 1.25))
+        self.nextfetch = (datetime.now() + timedelta(minutes=waitminutes))
+