January 2010 - Zope - Zope lists

Product loading during ZopeTestCase startup
by Encolpe Degoute 19 Jan '10

19 Jan '10

Hello, since few days i'am facing a strange problem with egg loading in tests. One egg called project.site_policy is never loaded in the Products namespace: the ZopeLite.hasPackage('project.site_policy') always returns False. Where is the code that loads eggs and products outside SOFTWARE_HOME/lib/python/Products ? regards -- "...[Linux] peut communiquer à travers n'importe quel medium excepté les signaux de fumée." -+- Dr. Greg Wettstein, Roger Maris Cancer Center -+-

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Re: [Zope] New Zope2 releases available
by Encolpe Degoute 13 Jan '10

13 Jan '10

Tres Seaver a écrit : [...] > > - "Zope 2.10.11", > http://www.zope.org/Products/Zope/2.10.22 short typo : - "Zope 2.10.11", http://www.zope.org/Products/Zope/2.10.11 -- <html> <head> </head> <body bgcolor="#ffffff" text="#000000"> <img alt="Encolpe Degoute <encolpe.degoute(a)quadra-informatique.fr>" src="file:///home/edegoute/Images/mailsignpic2.png"/> </body> </html>

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New Zope2 releases available
by Tres Seaver 13 Jan '10

13 Jan '10

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 In order to address a potential cross-site scripting problem in Zope's fallback error message, we are releasing new versions of the 2.8, 2.9, 2.10, 2.11, and 2.12 release lines. The issue, reported by the Plone team, could be triggered by a combination of a broken 'standard_error_message' template, plus an error whose 'str' contained markup. Although the 2.8, 2.9, and 2.10 branches are formally "out-of- maintenance", they are still in very wide use. the Zope security response team decided to release versions for those branches, in addition to the 2.11 and 2.12 branches which are still being supported under normal policy. Releases are available here: - - "Zope 2.8.12", http://www.zope.org/Products/Zope/2.8.12 - - "Zope 2.9.12", http://www.zope.org/Products/Zope/2.9.12 - - "Zope 2.10.11", http://www.zope.org/Products/Zope/2.10.22 - - "Zope 2.11.6", http://www.zope.org/Products/Zope/2.11.6 - - "Zope 2.12.3", http://pypi.zope.org/pypi/Zope2/2.12.3 Please note that the 2.12 releases are made only on the Python Package Index server, aka "PyPI" or "the Cheeseshop." Tres. - -- =================================================================== Tres Seaver +1 540-429-0999 tseaver(a)palladion.com Palladion Software "Excellence by Design" http://palladion.com -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.9 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iEYEARECAAYFAktNPJYACgkQ+gerLs4ltQ6P1QCeJk6B+kIz9tXmN2oGYxFh1HuT WTIAoKevoMU9XOLmTJgpiRuLk7dHZnZv =PrpY -----END PGP SIGNATURE-----

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Five EditFrom and Fields appears broken
by Jim Pharis 08 Jan '10

08 Jan '10

Does anyone successfully use zope.formlib.form Fields with Products.Five.formlib.formbase EditForm? I was trying to figure out why my form_fields.omit and custom_widget were being ignored. I followed it up the stack and found the method setUpEditWidgets in zope.app.form.utility never takes Fields into account and just looks at the schema and context to determine the fields. So I was starting to think maybe you don't use Fields with Five forms, but there is a unit test in Products.Five.formlib.tests view.py that actually thinks its using Fields. I don't think this is actually the case though, the test just doesn't touch omit or custom_widget functionality so it passes thinking Fields is working. The /Products/Five/form/__init__.py imports zope.app.form.utility setUpEditWidgets. zope.formlib has a different setUpEditWidgets method in zope/formlib/form.py that actually takes form_fields as the 1st param. So in summary, if you think your using Fields in Five try using omit or custom_widget and see if it works and you actually are really using Fields. If it works maybe I have something messed up on my end. TIA - Jim

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Error in Copy/Import during Migration
by Brian Brinegar 07 Jan '10

07 Jan '10

I'm fairly well versed on the inner workings of Zope, but yesterday I've run into a problem that I can grasp. First, some background on what I'm doing. I've got a 200GB Data.fs file which I'm splitting up into multiple storages. The way I'm doing this is to create a zope instance which mounts a new storage and the old storage and then a python script connects to the application and uses a modified version of manage_clone (which maintains ownership) to copy content into the new storage. This works correctly for most things, but yesterday I tried to move a folder with about 3.1GB of stuff in it. On a side note, I ran into an issue with running out of /tmp space during the clone. The _getCopy method of CopySourse exports an object to a tempfile and then imports it to create the copy. When copying something larger than available tmp space zope crashes. I worked around this by explicitly setting tempfile.tempdir to somewhere with plenty of free space. There may be an environment variable to do this as well. Just an FYI. Anyway, here's what I see. The copy starts, a tempfile is created (on the client) and grows to the appropriate size (3.1GB). Then, a Data.fs.temp appears on the new server and grows to the appropriate size. However, when my script tries to commit the transaction I get an EOF error: Traceback (most recent call last): File "./migrate_site.py", line 45, in ? transaction.get().commit() File "/var/local/zope/Zope-2.11.4-1/lib/python/transaction/_transaction.py", line 325, in commit self._commitResources() File "/var/local/zope/Zope-2.11.4-1/lib/python/transaction/_transaction.py", line 427, in _commitResources rm.tpc_vote(self) File "/var/local/zope/Zope-2.11.4-1/lib/python/ZODB/Connection.py", line 744, in tpc_vote s = vote(transaction) File "/var/local/zope/Zope-2.11.4-1/lib/python/ZEO/ClientStorage.py", line 1004, in tpc_vote self._server.vote(id(txn)) File "/var/local/zope/Zope-2.11.4-1/lib/python/ZEO/ServerStub.py", line 262, in vote return self.rpc.call('vote', trans_id) File "/var/local/zope/Zope-2.11.4-1/lib/python/ZEO/zrpc/connection.py", line 699, in call raise inst # error raised by server EOFError I don't seem to have any space issues on any devices, and the process works for smaller site. Any input would be greatly appreciated. Thanks, -- Brian Brinegar Web Services Coordinator Engineering Computer Network

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zeo cache-size tuning - number of obj. vs MB
by Gaute Amundsen 06 Jan '10

06 Jan '10

Hi What's the difference between the to cache-size settings here? I've not been able to find a good description to guide me in finding the right values. <zodb_db main> mount-point / cache-size 10000 1. <zeoclient> server foo:9080 storage main name zeostorage var $INSTANCE/var cache-size 20MB 2. </zeoclient> </zodb_db> As far as I've been able to determine, the second one 2. refers to a separate cache at the zeo connection level. Running 9 zeo clients (2.7.9) like this on a frontend with 4G ram, varnish, apache, and haproxy. Tethering on the edge of too much swapping. Needing to cut down.. Would it be better to spend all the memory on 1? Is there a good way to find a balance? Regards Gaute Amundsen

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generate unique user id, without cookies
by Marko Kruijer 04 Jan '10

04 Jan '10

after having some weird issues with Sessions and ZEO usage I've found out part of the problem. It turns out certain browsers (IE6 mostly) save the session ID cookies, but sometimes these disappear. This results in a new _ZopeId being generated and thus the new session is empty. At first i thought it was a session product problem, but in recreating this with my own session management (mysql based) the same issue arises. I don't know why this happens, the only obstacle I'm facing now is to create an adequate solution ;) Because the cookie method is not flawless we've decided to create a way to uniquely determine a user without using a client side cookie, we are already using the IP address for this, Of course that is not enough, so I was wondering what other 'unique' elements could be used for this. I've thought about adding user agent, but this is to general I think. Internal IP would be ideal, but I'm not sure this can be done (probably not). Maybe there are also 'other' zope session products that work in another way and might fix my problems as a whole?

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exUserFolder and Zope 2.12
by Baiju M 02 Jan '10

02 Jan '10

Hi, In exUserFolder there are few exceptions raised like this: raise 'LoginRequired', self.docLogin(self, request) This will not working in Zope 2.12 (Python 2.6) Any idea, how to change it ? Regards, Baiju M

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