def _nextTID(self, ttid=None, divisor=None):
"""
Compute the next TID based on the current time and check collisions.
Also, if ttid is not None, divisor is mandatory adjust it so that
tid % divisor == ttid % divisor
while preserving
min_tid < tid
If ttid is None, divisor is ignored.
When constraints allow, prefer decreasing generated TID, to avoid
fast-forwarding to future dates.
"""
tid = tidFromTime(time())
min_tid = self._last_tid
if tid <= min_tid:
tid = addTID(min_tid, 1)
# We know we won't have room to adjust by decreasing.
try_decrease = False
else:
try_decrease = True
if ttid is not None:
assert isinstance(ttid, basestring), repr(ttid)
assert isinstance(divisor, (int, long)), repr(divisor)
ref_remainder = u64(ttid) % divisor
remainder = u64(tid) % divisor
if ref_remainder != remainder:
if try_decrease:
new_tid = addTID(tid, ref_remainder - divisor - remainder)
assert u64(new_tid) % divisor == ref_remainder, (dump(new_tid),
ref_remainder)
if new_tid <= min_tid:
new_tid = addTID(new_tid, divisor)
else:
if ref_remainder > remainder:
ref_remainder += divisor
new_tid = addTID(tid, ref_remainder - remainder)
assert min_tid < new_tid, (dump(min_tid), dump(tid), dump(new_tid))
tid = new_tid
self._last_tid = tid
return self._last_tid
def _nextTID(self, ttid=None, divisor=None):
"""
Compute the next TID based on the current time and check collisions.
Also, if ttid is not None, divisor is mandatory adjust it so that
tid % divisor == ttid % divisor
while preserving
min_tid < tid
If ttid is None, divisor is ignored.
When constraints allow, prefer decreasing generated TID, to avoid
fast-forwarding to future dates.
"""
tid = tidFromTime(time())
min_tid = self._last_tid
if tid <= min_tid:
tid = addTID(min_tid, 1)
# We know we won't have room to adjust by decreasing.
try_decrease = False
else:
try_decrease = True
if ttid is not None:
assert isinstance(ttid, basestring), repr(ttid)
assert isinstance(divisor, (int, long)), repr(divisor)
ref_remainder = u64(ttid) % divisor
remainder = u64(tid) % divisor
if ref_remainder != remainder:
if try_decrease:
new_tid = addTID(tid, ref_remainder - divisor - remainder)
assert u64(new_tid) % divisor == ref_remainder, (dump(new_tid),
ref_remainder)
if new_tid <= min_tid:
new_tid = addTID(new_tid, divisor)
else:
if ref_remainder > remainder:
ref_remainder += divisor
new_tid = addTID(tid, ref_remainder - remainder)
assert min_tid < new_tid, (dump(min_tid), dump(tid), dump(new_tid))
tid = new_tid
self._last_tid = tid
return self._last_tid
def asTID(self, value):
if '.' in value:
return tidFromTime(float(value))
return p64(int(value, 0))
def asTID(self, value):
if '.' in value:
return tidFromTime(float(value))
return p64(int(value, 0))
