def from_datetime(self, dt):
"""
generates a UUID for a given datetime
:param dt: datetime
:type dt: datetime
:return:
"""
global _last_timestamp
epoch = datetime(1970, 1, 1, tzinfo=dt.tzinfo)
offset = epoch.tzinfo.utcoffset(epoch).total_seconds() if epoch.tzinfo else 0
timestamp = (dt - epoch).total_seconds() - offset
node = None
clock_seq = None
nanoseconds = int(timestamp * 1e9)
timestamp = int(nanoseconds // 100) + 0x01b21dd213814000L
if clock_seq is None:
import random
clock_seq = random.randrange(1 << 14L) # instead of stable storage
time_low = timestamp & 0xffffffffL
time_mid = (timestamp >> 32L) & 0xffffL
time_hi_version = (timestamp >> 48L) & 0x0fffL
clock_seq_low = clock_seq & 0xffL
clock_seq_hi_variant = (clock_seq >> 8L) & 0x3fL
if node is None:
node = getnode()
return pyUUID(fields=(time_low, time_mid, time_hi_version,
clock_seq_hi_variant, clock_seq_low, node), version=1)
def from_datetime(self, dt):
"""
generates a UUID for a given datetime
:param dt: datetime
:type dt: datetime
:return:
"""
global _last_timestamp
epoch = datetime(1970, 1, 1, tzinfo=dt.tzinfo)
offset = epoch.tzinfo.utcoffset(
epoch).total_seconds() if epoch.tzinfo else 0
timestamp = (dt - epoch).total_seconds() - offset
node = None
clock_seq = None
nanoseconds = int(timestamp * 1e9)
timestamp = int(nanoseconds // 100) + 0x01b21dd213814000
if clock_seq is None:
import random
clock_seq = random.randrange(1 << 14) # instead of stable storage
time_low = timestamp & 0xffffffff
time_mid = (timestamp >> 32) & 0xffff
time_hi_version = (timestamp >> 48) & 0x0fff
clock_seq_low = clock_seq & 0xff
clock_seq_hi_variant = (clock_seq >> 8) & 0x3f
if node is None:
node = getnode()
return pyUUID(fields=(time_low, time_mid, time_hi_version,
clock_seq_hi_variant, clock_seq_low, node),
version=1)
def generate_timeuuid():
"""
code modified from: http://goo.gl/czeA4P
"""
dt = datetime.datetime.now()
epoch = datetime.datetime(1970, 1, 1, tzinfo=dt.tzinfo)
offset = epoch.tzinfo.utcoffset(epoch).total_seconds() \
if epoch.tzinfo else 0
timestamp = (dt - epoch).total_seconds() - offset
node = None
clock_seq = None
nanoseconds = int(timestamp * 1e9)
timestamp = int(nanoseconds // 100) + 0x01b21dd213814000
if clock_seq is None:
import random
clock_seq = random.randrange(1 << 14) # instead of stable storage
time_low = timestamp & 0xffffffff
time_mid = (timestamp >> 32) & 0xffff
time_hi_version = (timestamp >> 48) & 0x0fff
clock_seq_low = clock_seq & 0xff
clock_seq_hi_variant = (clock_seq >> 8) & 0x3f
if node is None:
node = getnode()
return pyUUID(fields=(time_low, time_mid, time_hi_version,
clock_seq_hi_variant, clock_seq_low, node),
version=1)
def generate_timeuuid():
"""
code modified from: http://goo.gl/czeA4P
"""
dt = datetime.datetime.now()
epoch = datetime.datetime(1970, 1, 1, tzinfo=dt.tzinfo)
offset = epoch.tzinfo.utcoffset(epoch).total_seconds() \
if epoch.tzinfo else 0
timestamp = (dt - epoch).total_seconds() - offset
node = None
clock_seq = None
nanoseconds = int(timestamp * 1e9)
timestamp = int(nanoseconds // 100) + 0x01b21dd213814000
if clock_seq is None:
import random
clock_seq = random.randrange(1 << 14) # instead of stable storage
time_low = timestamp & 0xffffffff
time_mid = (timestamp >> 32) & 0xffff
time_hi_version = (timestamp >> 48) & 0x0fff
clock_seq_low = clock_seq & 0xff
clock_seq_hi_variant = (clock_seq >> 8) & 0x3f
if node is None:
node = getnode()
return pyUUID(fields=(time_low, time_mid, time_hi_version,
clock_seq_hi_variant, clock_seq_low, node),
version=1)
def __assert_uuid(self, data, attribs):
if data is None:
return self.validation_success(data)
try:
return self.validation_success(pyUUID(data))
except Exception:
return self.validation_error(data, attribs['error'])