def getUidTimecode(cls, prefix=None, suffix=None):
""" Creates a timecode down to the microsecond for use in creating unique UIDs. """
out = Base64.to64(cls.getNowSeconds()) + '-' + Base64.to64(
datetime.microsecond)
return ((StringUtils.toUnicode(prefix) + '-') if prefix else '') + out \
+ (('-' + StringUtils.toUnicode(suffix)) if suffix else '')
def getUidTimecode(cls, prefix=None, suffix=None):
""" Creates a timecode down to the microsecond for use in creating unique UIDs. """
out = Base64.to64(cls.getNowSeconds()) + "-" + Base64.to64(datetime.microsecond)
return (
((StringUtils.toUnicode(prefix) + "-") if prefix else "")
+ out
+ (("-" + StringUtils.toUnicode(suffix)) if suffix else "")
)
def getSecondsFromTimecode(cls, timecode, zeroTime =None):
if zeroTime is None:
zeroTime = cls._ZERO_TIME
if timecode is None:
return zeroTime
return 60*(Base64.from64(timecode)) + zeroTime
def getSecondsFromTimecode(cls, timecode, zeroTime =None):
if zeroTime is None:
zeroTime = cls._ZERO_TIME
if timecode is None:
return zeroTime
return 60*(Base64.from64(timecode)) + zeroTime
def createUniqueId(cls, prefix = u''):
""" Creates a universally unique identifier string based on current
time, active application instance state, and a randomized hash
"""
cls._UID_INDEX += 1
return '%s%s-%s-%s' % (
prefix,
TimeUtils.getNowTimecode(cls.BASE_UNIX_TIME),
Base64.to64(cls._UID_INDEX),
StringUtils.getRandomString(12))
def getTimecodeFromDatetime(cls, time =None, zeroTime =None, rotationInterval =None):
if zeroTime is None:
zeroTime = cls._ZERO_TIME
if rotationInterval is None:
rotationInterval = cls._ROTATION_INTERVAL
if time is None:
time = datetime.datetime.utcnow()
t = float(TimeUtils.datetimeToSeconds(time) - zeroTime)/60.0
t = float(rotationInterval)*math.floor(t/float(rotationInterval))
return Base64.to64(int(t))
def getTimecodeFromDatetime(cls, time =None, zeroTime =None, rotationInterval =None):
if zeroTime is None:
zeroTime = cls._ZERO_TIME
if rotationInterval is None:
rotationInterval = cls._ROTATION_INTERVAL
if time is None:
time = datetime.datetime.utcnow()
t = float(TimeUtils.datetimeToSeconds(time) - zeroTime)/60.0
t = float(rotationInterval)*math.floor(t/float(rotationInterval))
return Base64.to64(int(t))
def timecodeToDatetime(cls, timeCode, baseTime=0):
""" Returns the datetime object that represents the given Base64 timeCode for the given
base time, which by default is 0.
"""
return cls.secondsToDatetime(Base64.from64(timeCode) + baseTime)
def getPrefix(self):
return Base64.to64(TimeUtils.getNowSeconds() - self._zeroTime)
def to64(cls, value):
"""Doc..."""
return Base64.to64(int(value))
def i64(self):
return Base64.to64(self.i)
def to64(cls, value):
"""Doc..."""
return Base64.to64(int(value))
def from64(cls, value):
"""Doc..."""
return Base64.from64(value, True)
def getPrefix(self):
return Base64.to64(TimeUtils.getNowSeconds() - self._zeroTime)
def datetimeToTimecode(cls, dt, baseTime=0):
""" Returns a timecode (base64 encoded seconds string) for the given datetime object and
offset by the baseTime number of seconds.
"""
return Base64.to64(cls.datetimeToSeconds(dt) - baseTime)
def timecodeToDatetime(cls, timeCode, baseTime =0):
""" Returns the datetime object that represents the given Base64 timeCode for the given
base time, which by default is 0.
"""
return cls.secondsToDatetime(Base64.from64(timeCode) + baseTime)
def getNowTimecode(cls, baseTime=0):
return Base64.to64(cls.getNowSeconds() - baseTime)
def datetimeToTimecode(cls, dt, baseTime =0):
""" Returns a timecode (base64 encoded seconds string) for the given datetime object and
offset by the baseTime number of seconds.
"""
return Base64.to64(cls.datetimeToSeconds(dt) - baseTime)
def _parseTimestamp(cls, value):
if value is None:
return datetime.datetime.utcnow()
elif StringUtils.isStringType(value):
return TimeUtils.secondsToDatetime(Base64.from64(value) + PyGlassEnvironment.BASE_UNIX_TIME)
return value
def getNowTimecode(cls, baseTime =0):
return Base64.to64(cls.getNowSeconds() - baseTime)
def getCurrentID(cls, sep ='::'):
return str(os.getpid()) + '-' + Base64.to64(threading.current_thread().ident) \
+ sep + str(threading.current_thread().name)
def from64(cls, value):
"""Doc..."""
return Base64.from64(value, True)
