class UpdatingLogger(object):
date_format = '%Y.%m.%d..%H.%M.%S'
def __init__(self, connection, prefix, name):
self.conn = connection
self.prefix = prefix
self.name = name
self.id_key = RedisKey('%s:id' % self.prefix, self.conn)
self.set_key = RedisKey('%s:set' % self.prefix, self.conn)
def save(self, date, value, t):
id = self.id_key.incr()
key = '%s:obj:%s' % (self.prefix, id)
date_str = date.strftime(self.date_format)
self.conn.hmset(key, {'value': value, 'date': date_str, 'time': t})
self.set_key.sadd(id)
def __getitem__(self, k):
"""
Retrieves an item or slice from the set of results.
"""
if not isinstance(k, slice):
raise TypeError
num = k.stop - k.start
key = self.set_key.redis_key
p = self.prefix
get = [
'%s:obj:*->value' % p,
'%s:obj:*->date' % p,
'%s:obj:*->time' % p
]
return self._to_python(
self.conn.sort(key, get=get, start=k.start, num=num, desc=True))
def count(self):
return self.set_key.scard()
def _get_date(self, value):
return datetime.datetime.strptime(value, self.date_format)
def _clone(self):
return self
def _to_python(self, result):
output = []
for i in range(len(result))[::3]:
obj = {}
obj['value'] = result[i]
obj['date'] = self._get_date(result[i + 1])
obj['time'] = result[i + 2]
output.append(obj)
return output
class UpdatingLogger(object):
date_format = '%Y.%m.%d..%H.%M.%S'
def __init__(self, connection, prefix, name):
self.conn = connection
self.prefix = prefix
self.name = name
self.id_key = RedisKey('%s:id' % self.prefix, self.conn)
self.set_key = RedisKey('%s:set' % self.prefix, self.conn)
def save(self, date, value, t):
id = self.id_key.incr()
key = '%s:obj:%s' % (self.prefix, id)
date_str = date.strftime(self.date_format)
self.conn.hmset(key, {'value': value, 'date': date_str, 'time': t})
self.set_key.sadd(id)
def __getitem__(self, k):
"""
Retrieves an item or slice from the set of results.
"""
if not isinstance(k, slice):
raise TypeError
num = k.stop - k.start
key = self.set_key.redis_key
p = self.prefix
get = ['%s:obj:*->value' % p, '%s:obj:*->date' % p, '%s:obj:*->time' % p]
return self._to_python(self.conn.sort(key, get=get, start=k.start, num=num, desc=True))
def count(self):
return self.set_key.scard()
def _get_date(self, value):
return datetime.datetime.strptime(value, self.date_format)
def _clone(self):
return self
def _to_python(self, result):
output = []
for i in range(len(result))[::3]:
obj = {}
obj['value'] = result[i]
obj['date'] = self._get_date(result[i+1])
obj['time'] = result[i+2]
output.append(obj)
return output
