def fetch_async(self, dict_version=None, return_updated=False):
if dict_version:
if dict_version not in self.VALID_DICT_VERSIONS:
raise Exception(
"Bad api version for database query: {}".format(
dict_version))
cache_key = self._dict_cache_key(self.cache_key, dict_version)
else:
cache_key = self.cache_key
cached_query = yield CachedQueryResult.get_by_id_async(cache_key)
do_stats = random.random() < tba_config.RECORD_FRACTION
rpcs = []
if cached_query is None:
if do_stats:
rpcs.append(
MEMCACHE_CLIENT.incr_async(random.choice(
self.DATABASE_MISSES_MEMCACHE_KEYS),
initial_value=0))
query_result = yield self._query_async()
if dict_version:
query_result = self.DICT_CONVERTER.convert(
query_result, dict_version)
if tba_config.CONFIG['database_query_cache']:
if dict_version:
rpcs.append(
CachedQueryResult(
id=cache_key,
result_dict=query_result,
).put_async())
else:
rpcs.append(
CachedQueryResult(
id=cache_key,
result=query_result,
).put_async())
updated = datetime.datetime.now()
else:
if do_stats:
rpcs.append(
MEMCACHE_CLIENT.incr_async(random.choice(
self.DATABASE_HITS_MEMCACHE_KEYS),
initial_value=0))
if dict_version:
query_result = cached_query.result_dict
else:
query_result = cached_query.result
updated = cached_query.updated
for rpc in rpcs:
try:
rpc.get_result()
except Exception, e:
logging.warning(
"An RPC in DatabaseQuery.fetch_async() failed!")
def fetch_async(self):
cached_query = yield CachedQueryResult.get_by_id_async(self.cache_key)
rpcs = []
if cached_query is None:
rpcs.append(
MEMCACHE_CLIENT.incr_async(random.choice(
self.DATABASE_MISSES_MEMCACHE_KEYS),
initial_value=0))
query_result = yield self._query_async()
if tba_config.CONFIG['database_query_cache']:
rpcs.append(
CachedQueryResult(
id=self.cache_key,
result=query_result,
).put_async())
else:
rpcs.append(
MEMCACHE_CLIENT.incr_async(random.choice(
self.DATABASE_HITS_MEMCACHE_KEYS),
initial_value=0))
query_result = cached_query.result
for rpc in rpcs:
rpc.wait()
raise ndb.Return(query_result)
def fetch_async(self):
cached_query = yield CachedQueryResult.get_by_id_async(self.cache_key)
do_stats = random.random() < tba_config.RECORD_FRACTION
rpcs = []
if cached_query is None:
if do_stats:
rpcs.append(
MEMCACHE_CLIENT.incr_async(random.choice(
self.DATABASE_MISSES_MEMCACHE_KEYS),
initial_value=0))
query_result = yield self._query_async()
if tba_config.CONFIG['database_query_cache']:
rpcs.append(
CachedQueryResult(
id=self.cache_key,
result=query_result,
).put_async())
else:
if do_stats:
rpcs.append(
MEMCACHE_CLIENT.incr_async(random.choice(
self.DATABASE_HITS_MEMCACHE_KEYS),
initial_value=0))
query_result = cached_query.result
for rpc in rpcs:
try:
rpc.get_result()
except Exception, e:
logging.warning(
"An RPC in DatabaseQuery.fetch_async() failed!")
