[ZODB-Dev] Traceback with ZODB 3.9.0

[Andreas Jung]

Am 25.09.09 16:54, schrieb Pedro Ferreira:
> Hello,
> I was trying to migrate a machine from 3.8.1 to 3.9.0, but I'm getting 
> the following error:
>
> """
> 2009-09-25T16:34:35 (2606) new connection ('137.138.4.155', 45551): 
> <ManagedServerConnection ('137.138.4.155', 45551)>
> 2009-09-25T16:34:35 (137.138.4.155:45551) received handshake 'Z309'
> 2009-09-25T16:34:35 (137.138.4.155:45551) Error caught in asyncore
> Traceback (most recent call last):
>   File "/usr/lib64/python2.4/asyncore.py", line 77, in write
>     obj.handle_write_event()
>   File "/usr/lib64/python2.4/asyncore.py", line 398, in handle_write_event
>     self.handle_write()
>   File "/usr/lib64/python2.4/site-packages/ZEO/zrpc/smac.py", line 276, 
> in handle_write
>     message = message.next()
>   File "/usr/lib64/python2.4/site-packages/ZEO/zrpc/smac.py", line 147, 
> in hack
>     self.__hmac_send = hmac.HMAC(sesskey, digestmod=ZEO.hash)
>   File "/usr/lib64/python2.4/hmac.py", line 44, in __init__
>     self.digest_size = digestmod.digest_size
> AttributeError: 'module' object has no attribute 'digest_size'
> 2009-09-25T16:34:35 (2606/137.138.4.155:45551) disconnected
> """
>
> (using Python 2.4.3 and hashlib 20060408a )
>
> Which led me to ZEO/hash.py:
>
> """
> try:
>     import hashlib
>     sha1 = hashlib.sha1
>     new = sha1
> except ImportError:
>     import sha
>     sha1 = sha.new
>     new = sha1
>     digest_size = sha.digest_size
> """
>
> Adding:
>   digest_size = hashlib.sha1().digest_size
> inside the try block fixes it.
>
> Is this really a bug? Or am I doing something wrong?
Very likely a bug (introduced while making the code work
for Python 2.6 at PyCon this year). Please file a bug report.
Unfortunately the bug could not be disovered through unittests.

-aj

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