Re: [ZODB-Dev] DisconnectedError
Hi. ZODB does not currently work with Py2.5. Gary ___ For more information about ZODB, see the ZODB Wiki: http://www.zope.org/Wikis/ZODB/ ZODB-Dev mailing list - ZODB-Dev@zope.org http://mail.zope.org/mailman/listinfo/zodb-dev
Re: [ZODB-Dev] DisconnectedError
On May 4, 2007, at 10:45 AM, Gary Poster wrote: Hi. ZODB does not currently work with Py2.5. I doubt that this has anything to do with his problem. He should try with Python 2.4 though. I'll be interested and depressed if this solves his problem . Jim -- Jim Fulton mailto:[EMAIL PROTECTED]Python Powered! CTO (540) 361-1714 http://www.python.org Zope Corporationhttp://www.zope.com http://www.zope.org ___ For more information about ZODB, see the ZODB Wiki: http://www.zope.org/Wikis/ZODB/ ZODB-Dev mailing list - ZODB-Dev@zope.org http://mail.zope.org/mailman/listinfo/zodb-dev
Re: [ZODB-Dev] DisconnectedError
On May 4, 2007, at 10:39 AM, José Pedro Ferreira wrote:
Hello.
I am experiencing a problem with ZODB-3.6.0 / Python 2.5, under Linux.
Each time I initialize a database, i get a DisconnectedError
exception in the client, with the following traceback:
quote
File /home/pferreir/workspace/indico/code/code/MaKaC/common/
db.py, line 50, in __init__
self._db=MaKaCDB(self._storage)
File /usr/local/lib/python2.5/site-packages/ZODB/DB.py, line
238, in __init__
storage.load(z64,'')
File /usr/local/lib/python2.5/site-packages/ZEO/
ClientStorage.py, line 746, in load
return self.loadEx(oid, version)[:2]
File /usr/local/lib/python2.5/site-packages/ZEO/
ClientStorage.py, line 769, in loadEx
data, tid, ver = self._server.loadEx(oid, version)
File /usr/local/lib/python2.5/site-packages/ZEO/ServerStub.py,
line 192, in loadEx
return self.rpc.call(loadEx, oid, version)
File /usr/local/lib/python2.5/site-packages/ZEO/zrpc/
connection.py, line 531, in call
r_flags, r_args = self.wait(msgid)
File /usr/local/lib/python2.5/site-packages/ZEO/zrpc/
connection.py, line 621, in wait
raise DisconnectedError()
DisconnectedError
/quote
In the server side, I get:
quote
2007-05-04T16:20:36 (11926) new connection ('127.0.0.1', 38126):
ManagedServerConnection ('127.0.0.1', 38126)
2007-05-04T16:20:36 (127.0.0.1:38126) received handshake 'Z303'
2007-05-04T16:20:36 (127.0.0.1:38126) loadEx() raised exception: 0x00
Traceback (most recent call last):
File /usr/local/lib/python2.5/site-packages/ZEO/zrpc/
connection.py, line 421, in handle_request
ret = meth(*args)
File /usr/local/lib/python2.5/site-packages/ZEO/
StorageServer.py, line 248, in loadEx
return self.storage.loadEx(oid, version)
File /usr/local/lib/python2.5/site-packages/ZODB/FileStorage/
FileStorage.py, line 523, in loadEx
pos = self._lookup_pos(oid)
File /usr/local/lib/python2.5/site-packages/ZODB/FileStorage/
FileStorage.py, line 514, in _lookup_pos
raise POSKeyError(oid)
POSKeyError: 0x00
2007-05-04T16:20:36 (11926/127.0.0.1:38126) disconnected
2007-05-04T16:20:36 (11926) new connection ('127.0.0.1', 38127):
ManagedServerConnection ('127.0.0.1', 38127)
2007-05-04T16:20:36 (127.0.0.1:38127) received handshake 'Z303'
/quote
What confuses me is that I though that a root object for the
database would be created by the client, and a DisconnectedError is
raised before that happens. What can be happening?
The root object is only created if it doesn't exist. The database is
trying to determine if it exists or not.
I don't know why the client is being disconnected. As others have
hinted, you should try this with Python 2.4 -- and please report back
if that changes the outcome.
Jim
--
Jim Fulton mailto:[EMAIL PROTECTED]Python
Powered!
CTO (540) 361-1714
http://www.python.org
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___
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http://www.zope.org/Wikis/ZODB/
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Re: [ZODB-Dev] DisconnectedError
Gary Poster wrote: Hi. ZODB does not currently work with Py2.5. Gary OK, thanks. However, I was able to make it work, running this simple script, and then running the application again. quote #!/usr/bin/python import ZODB from ZODB import FileStorage, DB import transaction storage = FileStorage.FileStorage(zeo/data.fs) db = DB(storage) connection = db.open() dbroot = connection.root() transaction.commit() connection.close() db.close() storage.close() /quote And now it works perfectly :). Is there any possible explanation for this? Thanks again, Pedro ___ For more information about ZODB, see the ZODB Wiki: http://www.zope.org/Wikis/ZODB/ ZODB-Dev mailing list - ZODB-Dev@zope.org http://mail.zope.org/mailman/listinfo/zodb-dev
Re: [ZODB-Dev] DisconnectedError
Jim Fulton wrote: I don't know why the client is being disconnected. As others have hinted, you should try this with Python 2.4 -- and please report back if that changes the outcome. OK, I've tested it with Python 2.4.4, and it worked OK. For Python 2.5, I had to use the hack I posted in the last mail (weird...). Best regards, Pedro Ferreira ___ For more information about ZODB, see the ZODB Wiki: http://www.zope.org/Wikis/ZODB/ ZODB-Dev mailing list - ZODB-Dev@zope.org http://mail.zope.org/mailman/listinfo/zodb-dev
Re: [ZODB-Dev] DisconnectedError
On May 4, 2007, at 11:25 AM, José Pedro Ferreira wrote: Jim Fulton wrote: I don't know why the client is being disconnected. As others have hinted, you should try this with Python 2.4 -- and please report back if that changes the outcome. OK, I've tested it with Python 2.4.4, and it worked OK. For Python 2.5, I had to use the hack I posted in the last mail (weird...). I don't really see a hack. All you did was open the database as usual. Before you ran your script with the hack, did you make sure the database did not exist? Jim -- Jim Fulton mailto:[EMAIL PROTECTED]Python Powered! CTO (540) 361-1714 http://www.python.org Zope Corporationhttp://www.zope.com http://www.zope.org ___ For more information about ZODB, see the ZODB Wiki: http://www.zope.org/Wikis/ZODB/ ZODB-Dev mailing list - ZODB-Dev@zope.org http://mail.zope.org/mailman/listinfo/zodb-dev
Re: [ZODB-Dev] DisconnectedError
Yes, the DB did not exist. And yes, it's not a hack, it's only opening and closing the database... but it unexpectedly works after doing it. Cheers, Pedro On May 4, 2007, at 11:25 AM, José Pedro Ferreira wrote: Jim Fulton wrote: I don't know why the client is being disconnected. As others have hinted, you should try this with Python 2.4 -- and please report back if that changes the outcome. OK, I've tested it with Python 2.4.4, and it worked OK. For Python 2.5, I had to use the hack I posted in the last mail (weird...). I don't really see a hack. All you did was open the database as usual. Before you ran your script with the hack, did you make sure the database did not exist? Jim -- Jim Fultonmailto:[EMAIL PROTECTED]Python Powered! CTO (540) 361-1714http://www.python.org Zope Corporationhttp://www.zope.comhttp://www.zope.org ___ For more information about ZODB, see the ZODB Wiki: http://www.zope.org/Wikis/ZODB/ ZODB-Dev mailing list - ZODB-Dev@zope.org http://mail.zope.org/mailman/listinfo/zodb-dev
Re: [ZODB-Dev] DisconnectedError
On May 4, 2007, at 12:36 PM, José Pedro Ferreira wrote: Yes, the DB did not exist. OK And yes, it's not a hack, It looks like the hack was to open and close the storage with FileStorage, rather than ZEO. But with Python 2.4, you were able to create the database using ZEO. Strange. Presumably I'll be able to reproduce the problem you had with Python 2.5. Jim -- Jim Fulton mailto:[EMAIL PROTECTED]Python Powered! CTO (540) 361-1714 http://www.python.org Zope Corporationhttp://www.zope.com http://www.zope.org ___ For more information about ZODB, see the ZODB Wiki: http://www.zope.org/Wikis/ZODB/ ZODB-Dev mailing list - ZODB-Dev@zope.org http://mail.zope.org/mailman/listinfo/zodb-dev
