def get_feed(feed_id):
""" Retrieve a feed from memcache or generate it if it does not exist """
xml = memcache.get(feed_id) # In memcache?
if xml is None:
feed = Feed.get_by_id(int(feed_id))
rss = None
if feed:
if feed.public_board:
rss = TrelloRSS(
constants.KEY,
channel_title=feed.channel_title,
rss_channel_link=feed.channel_link,
description=feed.channel_description)
else:
user = feed.user.get()
rss = TrelloRSS(
constants.KEY,
token=user.auth_token,
channel_title=feed.channel_title,
rss_channel_link=feed.channel_link,
description=feed.channel_description)
if feed.get_all:
if feed.actions:
rss.get_all(items=feed.actions)
else:
rss.get_all()
else:
if feed.actions:
rss.get_from(feed.board_id,public_board=feed.public_board,items=feed.actions)
else:
rss.get_from(feed.board_id,public_board=feed.public_board)
xml = rss.rss
memcache.add(key=feed_id, value=xml, time=1800) # Expire after 30 minutes
return xml
def validate_input(board_id,link):
""" Validate whether a board id is correct, and whether a link is correct """
errors = []
try_url = re.match(url_re, board_id)
if try_url:
board_id = try_url.group(1)
trell = TrelloRSS(constants.KEY)
try:
trell.get_from(board_id, public_board=True)
except ResourceUnavailable:
errors.append('iderror')
if not re.match(url_regex, link):
errors.append('link')
return board_id, link, errors
