def find_by_timestamp(start, end, sort_len = False, page = 0, min_len = 0,
channel = -1):
if(page > 0):
start_limit = app.config['RECORDS_PER_PAGE'] * (page - 1)
else:
start_limit = 0
#Search key : recording:tmp:search:<ch_id>:<min_len>:<start>:<end>
search_key = "recording:tmp:search:%s:%s:%s:%s" % (int(channel),
int(min_len),
int(start),
int(end))
if not redis.exists(search_key):
recordings = redis.zrangebyscore(Recording.TIMESTAMPS_KEY, start, end)
#filter recordings by lenght and channel_id
if(min_len > 0 or channel >= 0):
recordings_filtered = []
for r_id in recordings:
recording = Recording.load(r_id)
if(min_len > recording.duration):
continue;
if(channel >= 0 and channel != recording.channel_id):
continue;
recordings_filtered.append(r_id)
recordings = recordings_filtered
pipe = redis.pipeline()
map(lambda r: pipe.sadd(search_key, r), recordings)
pipe.execute()
#Set expiration time
redis.expire(search_key, 3600);
if(sort_len):
#Return all records
recordings = redis.sort(search_key,
None,
None,
"recording:*->duration",
None,
True)
else:
recordings = redis.smembers(search_key)
lenght = len(recordings)
if(page > 0):
recordings = recordings[start_limit :
start_limit + app.config['RECORDS_PER_PAGE']]
return (map(lambda r_id: Recording.load(r_id), recordings), lenght)
def all(load = True):
if load:
return map(lambda rid: Recording.load(rid), Recording.all(False))
else:
return redis.zrangebyscore(Recording.TIMESTAMPS_KEY, 0, 2**32-1)
