[Zope-dev] Zope 2.5.0b4 problems w/ ZEO
Trying to start a ZEO client using Zope 2.5.0b4 doesn't
work:
--
2002-01-15T20:13:20 INFO(0) client Trying to connect to server: ('192.168.1.52', 8900)
--
2002-01-15T20:13:20 INFO(0) ClientStorage Connected to storage
--
2002-01-15T20:13:20 ERROR(200) ZODB Couldn't load state for
'\x00\x00\x00\x00\x00\x00\x00\x02'
Traceback (innermost last):
File /data/www/Zope.8/src/Zope-2.5.0b4-src/lib/python/ZODB/Connection.py, line 471,
in setstate
TypeError: ('__init__() takes exactly 3 arguments (1 given)', extension class
Products.Sessions.SessionDataManager.SessionDataManagerTraverser at 88ba2f8, ())
--
2002-01-15T20:13:20 PANIC(300) z2 Startup exception
--
2002-01-15T20:13:20 ERROR(200) ZODB Couldn't load state for
'\x00\x00\x00\x00\x00\x00\x00\x02'
Traceback (innermost last):
File /data/www/Zope.8/src/Zope-2.5.0b4-src/lib/python/ZODB/Connection.py, line 471,
in setstate
TypeError: ('__init__() takes exactly 3 arguments (1 given)', extension class
Products.Sessions.SessionDataManager.SessionDataManagerTraverser at 88ba2f8, ())
Traceback (innermost last):
File /data/www/Zope.8/Zope/z2.py, line 495, in ?
File string, line 1, in ?
File /data/www/Zope.8/src/Zope-2.5.0b4-src/lib/python/Zope/__init__.py, line 71, in
?
File /data/www/Zope.8/src/Zope-2.5.0b4-src/lib/python/OFS/Application.py, line 245,
in initialize
File /data/www/Zope.8/src/Zope-2.5.0b4-src/lib/python/ZODB/Connection.py, line 471,
in setstate
TypeError: ('__init__() takes exactly 3 arguments (1 given)', extension class
Products.Sessions.SessionDataManager.SessionDataManagerTraverser at 88ba2f8, ())
--
2002-01-15T20:13:21 PROBLEM(100) zdaemon zdaemon: Tue Jan 15 15:13:21 2002: The kid,
12557, died on me.
Any ideas or suggestions?
--andy.
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Re: [Zope-dev] Zope 2.5.0b4 problems w/ ZEO
Andrew Sydelko wrote:
Trying to start a ZEO client using Zope 2.5.0b4 doesn't
work:
--
2002-01-15T20:13:20 INFO(0) client Trying to connect to server: ('192.168.1.52', 8900)
--
2002-01-15T20:13:20 INFO(0) ClientStorage Connected to storage
--
2002-01-15T20:13:20 ERROR(200) ZODB Couldn't load state for
'\x00\x00\x00\x00\x00\x00\x00\x02'
Traceback (innermost last):
File /data/www/Zope.8/src/Zope-2.5.0b4-src/lib/python/ZODB/Connection.py, line 471,
in setstate
TypeError: ('__init__() takes exactly 3 arguments (1 given)', extension class
Products.Sessions.SessionDataManager.SessionDataManagerTraverser at 88ba2f8, ())
--
2002-01-15T20:13:20 PANIC(300) z2 Startup exception
--
2002-01-15T20:13:20 ERROR(200) ZODB Couldn't load state for
'\x00\x00\x00\x00\x00\x00\x00\x02'
Traceback (innermost last):
File /data/www/Zope.8/src/Zope-2.5.0b4-src/lib/python/ZODB/Connection.py, line 471,
in setstate
TypeError: ('__init__() takes exactly 3 arguments (1 given)', extension class
Products.Sessions.SessionDataManager.SessionDataManagerTraverser at 88ba2f8, ())
Traceback (innermost last):
File /data/www/Zope.8/Zope/z2.py, line 495, in ?
File string, line 1, in ?
File /data/www/Zope.8/src/Zope-2.5.0b4-src/lib/python/Zope/__init__.py, line 71, in
?
File /data/www/Zope.8/src/Zope-2.5.0b4-src/lib/python/OFS/Application.py, line 245,
in initialize
File /data/www/Zope.8/src/Zope-2.5.0b4-src/lib/python/ZODB/Connection.py, line 471,
in setstate
TypeError: ('__init__() takes exactly 3 arguments (1 given)', extension class
Products.Sessions.SessionDataManager.SessionDataManagerTraverser at 88ba2f8, ())
--
2002-01-15T20:13:21 PROBLEM(100) zdaemon zdaemon: Tue Jan 15 15:13:21 2002: The kid,
12557, died on me.
Any ideas or suggestions?
--andy.
Hi Andy,
in this particular case, ZEO is a red herring... In beta 4 (and
curiously, not on the HEAD--I'm sure I'll hear a mea maxima culpa soon
from someone) the base class for the SessionDataManagerTraverser was
made to be a persistent object. Since the base class changed, the ZODB
is now having fits trying to reconcile the change in base classes.
Since the session data manager object gets created automatically by Zope
when it doesn't exist at system startup, you can make a new one (which
inherits from Persistent) by:
1) Edit .../Products/Sessions/SessionDataManager and change the
SessionDataManagerTraverser to not be persistent by duplicating the
class line, commenting out one, and removing the Persistent word from
the other
2) Restart Zope
3) Delete the session data manager from the root object
4) Stop Zope
5) Undo the editing change you did in step 1
6) Restart Zope
The problem will now have been addressed in the ZODB. HOWEVER, since
you mention you are running ZEO, all clients will have to have the same
code base to be able to function. You won't be able to do this without
upgrading all of your code at the same time.
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Re: [Zope-dev] Zope 2.5.0b4 problems w/ ZEO
in this particular case, ZEO is a red herring... In beta 4 (and curiously, not on the HEAD--I'm sure I'll hear a mea maxima culpa soon from someone) the base class for the SessionDataManagerTraverser was made to be a persistent object. Since the base class changed, the ZODB is now having fits trying to reconcile the change in base classes. Ugg. Since the session data manager object gets created automatically by Zope when it doesn't exist at system startup, you can make a new one (which inherits from Persistent) by: snip This all sounds right. Thanks Matt! Unfortunately, I don't think I can really make it so the transition between 2.4 - 2.5 (forwards and backwards) is completely seamless in all cases all I can do is provide software that helps folks get over their partiuclar hump. I think what might be in order is: - A monkey patch to 2.3 and 2.4 that causes the request to ignore the effects of a bad __before_publishing_traverse__ entry. This will be the prescription for AttributeError: __call__ errors when downgrading from 2.5 to 2.3/2.4. (Alternately, I could code up a little script that deleted the root __before_publising_traverse__ method, but that would also rid the site of access rules at the root). - Prominent mention of Matt's workaround for upgrading from 2.5.0 beta 1-3 to 2.5.0 beta 4. ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
