def fetch_packages(self):
package_ids = None
key = 'popular_packages.' + str(self.user.id)
if self.use_cache:
try:
package_ids = cache.get(key)
except Exception as e:
app.logger.exception(e)
app.logger.info("An exception catched, disable cache")
self.use_cache = False
if package_ids is None:
packages = db.session.query(Subscribe.feed_id, db.func.count(Subscribe.id).label('total')) \
.filter(Subscribe.type == Subscribe.TYPE_FEED) \
.filter(Subscribe.feed_id.notin_(db.session.query(Subscribe.feed_id).filter(
(Subscribe.user_id == self.user.id) & (Subscribe.feed_id.isnot(None))
).group_by(Subscribe.feed_id))) \
.group_by(Subscribe.feed_id) \
.order_by(db.desc('total')) \
.limit(500)
package_ids = []
for (feed_id, _count) in packages:
package_ids.append(feed_id)
if self.random_order:
import random
random.shuffle(package_ids)
package_ids = package_ids[:self.packages_count]
if self.use_cache:
cache.set(key, package_ids, timeout=self.timeout)
feeds = Feed.query.filter(Feed.id.in_(package_ids))
return feeds
def fetch_news(self):
article_ids = None
key = self._get_cache_key() + '.' + str(self.user.id)
if self.use_cache:
try:
article_ids = cache.get(key)
except Exception as e:
app.logger.exception(e)
app.logger.info("An exception catched, disable cache")
self.use_cache = False
if article_ids is None:
article_ids = self.generate()
if self.use_cache:
cache.set(key, article_ids, timeout=self.timeout)
return article_ids
def fetch_feed_articles(feed_id):
from rdr.modules.feeds.articles.sync import ArticlesSynchronizer
from rdr.modules.feeds.models import Feed
from rdr.application.cache import cache
sync_count = 0
cache_key = 'tasks.fetch_feed_articles.lock.' + str(feed_id)
if not cache.get(cache_key):
cache.set(cache_key, True, timeout=ARTICLE_FETCH_TIMEOUT)
feed = Feed.query.filter(Feed.id == feed_id).first()
if feed:
synchronizer = ArticlesSynchronizer(feed)
articles = synchronizer.sync()
sync_count = len(articles)
cache.delete(cache_key)
return feed_id, sync_count
