Caio Brentano wrote:
Ok... I promise this is the last email! :-)
I got a better solution.
Just put "random.seed()" before "bytes = [random.randint(0, 255) for i in
xrange(16)]" in the file "qpid-0.6/python/qpid/datatypes.py" (line 296).
Nice catch! It's always disconcerting when UUIDs aren't unique. I
actually ran into the same issue the other day except it was with
independent processes that were simultaneously started. The problem is
that the random number generator seeds itself with the current time by
default, and so if the processes start simultaneously you'll get the
same random numbers. I've updated the code on trunk to seed itself based
on a hash of the current time, the PID, and the hostname. Hopefully that
will provide a bit more uniqueness:
...
import os, random, socket, time
rand = random.Random()
rand.seed((os.getpid(), time.time(), socket.gethostname()))
def random_uuid():
bytes = [rand.randint(0, 255) for i in xrange(16)]
...
--Rafael
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