def _prune_blob_cache(self):
"""Remove blob cache entries older than the configured number of
days."""
# Do this check no more than once an hour
if datetime.now() - self._last_cache_prune < timedelta(hours=1):
return
self._last_cache_prune = datetime.now()
BlobCache.prune(self.config.cachedir, self.config.blob_cache_days)
def _prune_cache_thread(self):
'''Runs as a separate Python thread; cannot interact with Tornado
state.'''
while True:
try:
BlobCache.prune(self.blob_cache.basedir, self.blob_cache_days)
except Exception:
_log.exception('Pruning blob cache')
try:
self.search_cache.prune()
except Exception:
_log.exception('Pruning search cache')
time.sleep(self.cache_prune_interval)
def _prune_cache_thread(self):
'''Runs as a separate Python thread; cannot interact with Tornado
state.'''
while True:
try:
BlobCache.prune(self.blob_cache.basedir, self.blob_cache_days)
except Exception:
_log.exception('Pruning blob cache')
try:
self.search_cache.prune()
except Exception:
_log.exception('Pruning search cache')
time.sleep(self.cache_prune_interval)
def __init__(self, **kwargs):
if options.baseurl is None:
raise ValueError('Base URL must be configured')
router = SockJSRouter(SearchConnection, '/search',
self.sockjs_settings)
# Allow connections to find the application
router.application = self
handlers = list(self.handlers)
router.apply_routes(handlers)
settings = dict(self.app_settings)
settings.update(kwargs)
tornado.web.Application.__init__(self, handlers, **settings)
if not os.path.isdir(options.blob_cache_dir):
os.makedirs(options.blob_cache_dir, 0700)
self.blob_cache = BlobCache(options.blob_cache_dir)
self.search_cache = SearchCache(options.search_cache_dir)
self._pruner = threading.Thread(target=self._prune_cache_thread,
name='prune-cache')
self._pruner.daemon = True
self._pruner.start()
