def get(self):
config = FeedPollerConfig.get_instance()
if config.is_enabled is None or config.is_enabled == False:
config.is_enabled = True
else:
config.is_enabled = False
db.put(config)
self.response.out.write("enabled %s" % FeedPollerConfig.get_instance().is_enabled)
def post(self):
# allow single feed to be updated
key = self.request.get("key")
if key is not None and len(key) > 0:
feed = FeedStream.get(db.Key(key))
if feed is None:
self.response.out.write("no feed to update")
return
self.update_feed(feed)
self.response.out.write("feed updated")
return
# no key do the recursive polling
is_enabled = FeedPollerConfig.get_instance().is_enabled
if is_enabled is None or is_enabled == False:
logging.info("feed poller not enabled shutting down")
self.response.out.write("feed poller not enabled shutting down")
return
# Get the stalest feed
feed = FeedStream.all().filter('deleted = ', False).order('last_polled').get()
# Check how stale the stalest feed is, if it's been updated in the
# last 10 minutes, we should take a break
max_age = datetime.utcnow() - timedelta(minutes=10)
if feed.last_polled >= max_age:
if not memcache.set("feed_poller_running", False):
logging.error("memcache set failed")
logging.info("putting feed poller to sleep")
self.response.out.write("putting feed poller to sleep")
return
# go get the feed
try:
self.update_feed(feed)
except:
logging.warn("Update Failed for feed with stream_id %s and url: %s" % (feed.stream_id, feed.url))
logging.error(sys.exc_info()[0])
try:
feed.last_polled = datetime.utcnow()
feed.has_error = True
feed.put()
except:
logging.warn("failed to save feed error")
# Queue the next feed
task = taskqueue.Task(url='/feedpoller/tasks/poll', params={}).add(queue_name="feed-poller")
self.response.out.write("feed updated")
def cron(self):
"""Wake up the feed poller"""
is_enabled = FeedPollerConfig.get_instance().is_enabled
if is_enabled is None or is_enabled == False:
logging.debug("feed poller not enabled")
self.response.out.write("feed poller not enabled")
return
is_running = memcache.get("feed_poller_running")
if is_running is not None and is_running == True:
logging.debug("feed poller already running")
self.response.out.write("feed poller already running")
return
# Queue the poller
if not memcache.set("feed_poller_running", True):
logging.error("memcache set failed")
task = taskqueue.Task(url='/feedpoller/tasks/poll', params={}).add(queue_name="feed-poller")
logging.debug("woke up the feed poller")
self.response.out.write("woke up the feed poller")
