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feeds.py
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feeds.py
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from common import SOURCE_URL
from google.appengine.api import memcache
from google.appengine.ext.webapp import template
from models import Item, ChangeDate, CHANGE_DATE_KEY
import os
PAGE_CACHE_NAMESPACE = "lukeyear.pageCache"
RSS_CACHE_KEY = "RSS_CACHE_KEY"
RSS_DATE_FORMAT = "%a, %d %b %Y %H:%M:%S %ZGMT"
def genrss():
page = memcache.get(RSS_CACHE_KEY, PAGE_CACHE_NAMESPACE)
if page is None:
params = gettemplateparams()
params['changedate'] = ChangeDate.get_by_key_name(CHANGE_DATE_KEY).date.strftime(RSS_DATE_FORMAT)
for item in params['items']:
item.pubDateString = item.pubDate.strftime(RSS_DATE_FORMAT)
page = template.render(os.path.join(os.path.dirname(__file__), 'rss.xml'),
params)
memcache.set(RSS_CACHE_KEY, page, 0, 0, PAGE_CACHE_NAMESPACE)
return page
ATOM_CACHE_KEY = "ATOM_CACHE_KEY"
ATOM_DATE_FORMAT = "%Y-%m-%dT%H:%M:%SZ"
def genatom():
page = memcache.get(ATOM_CACHE_KEY, PAGE_CACHE_NAMESPACE)
if page is None:
params = gettemplateparams()
params['changedate'] = ChangeDate.get_by_key_name(CHANGE_DATE_KEY).date.strftime(ATOM_DATE_FORMAT)
for item in params['items']:
item.pubDateString = item.pubDate.strftime(ATOM_DATE_FORMAT)
page = template.render(os.path.join(os.path.dirname(__file__), 'atom.xml'),
params)
memcache.set(ATOM_CACHE_KEY, page, 0, 0, PAGE_CACHE_NAMESPACE)
return page
def gettemplateparams():
params = {}
params['sourceUrl'] = SOURCE_URL
params['items'] = Item.all().order("-pubDate").fetch(365)
return params
def clearCache():
memcache.delete_multi([RSS_CACHE_KEY, ATOM_CACHE_KEY],
namespace=PAGE_CACHE_NAMESPACE)