Atomstrom/models/feedinfo.py

#!/usr/bin/env python
#coding: utf-8

from sqlalchemy import Column, Integer, ForeignKey, String, DateTime
from sqlalchemy.orm import relation, backref
from datetime import datetime, timedelta
from random import randint

from models import Base

class Feedinfo(Base):
    __tablename__ = 'feedinfo'

    id = Column(Integer, primary_key=True)
    feed_id = Column(Integer, ForeignKey('feed.id'))
    feed = relation("Feed", backref=backref('feedinfo', uselist=False))
    title = Column(String(255))
    link = Column(String(255))
    subtitle = Column(String(255))
    author = Column(String(255))
    publisher = Column(String(255))
    status = Column(Integer)
    version = Column(String(16))
    encoding = Column(String(16))
    bozo = Column(Integer)

    lastfetched = Column(DateTime)
    lastsuccessful = Column(DateTime)
    nextfetch = Column(DateTime)

    def __init__(self, parser):
        self.update(parser)

    def __repr__(self):
       return "<Feedinfo('%s','%s','%s')>" % (self.title, self.subtitle, self.author)

    def update(self, parser):
        if parser.feed.has_key('title'):
            self.title = parser.feed.get('title')
        if parser.feed.has_key('link'):
            self.link = parser.feed.get('link')
        if parser.feed.has_key('subtitle'):
            self.subtitle = parser.feed.get('subtitle')
        if parser.feed.has_key('author'):
            self.author = parser.feed.get('author')
        if parser.feed.has_key('publisher'):
            self.author = parser.feed.get('publisher')
        self.status = parser.get('status')
        self.version = parser.get('version')
        self.encoding = parser.get('encoding')
        self.bozo = parser.get('bozo')
        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))