January 2002 - Zope-Dev

Zope 2.5.0b3 a UnpickleableError
by Chris Withers 17 Jan '02

17 Jan '02

Hi, trying to use the new sessioning in Zope 2.5.0b3 and get this: UnpickleableError Sorry, a site error occurred. Traceback (innermost last): File /usr/local/zope/2.5.0b3_base/lib/python/ZPublisher/Publish.py, line 151, in publish_module File /usr/local/zope/2.5.0b3_base/lib/python/ZPublisher/Publish.py, line 115, in publish File /usr/local/zope/2.5.0b3_base/lib/python/Zope/__init__.py, line 158, in zpublisher_exception_hook (Object: Live) File /usr/local/zope/2.5.0b3_base/lib/python/ZPublisher/Publish.py, line 103, in publish File /usr/local/zope/2.5.0b3_base/lib/python/Zope/__init__.py, line 172, in commit File /usr/local/zope/2.5.0b3_base/lib/python/ZODB/Transaction.py, line 233, in commit File /usr/local/zope/2.5.0b3_base/lib/python/ZODB/Connection.py, line 345, in commit (Info: (('Products.CMFCore.FSPythonScript', 'FSPythonScript'), '\x00\x00\x00\x00\x00\x00\x00!', '')) UnpickleableError: Cannot pickle <type 'code'> objects Has anyone else experienced this? More importantly, can anyone help with how we should find out what is actually going on here? cheers, Chris

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Re: no more SIG11 --without-pymallog --without-cycle-gc (was Re: [Zope-dev] Bravery & Zope 2.5 Testers)
by Leonardo Rochael Almeida 17 Jan '02

17 Jan '02

On a related note, when is Zope 2.4.4 comming out? On Wed, 2002-01-16 at 13:34, Matthew T. Kromer wrote: > Harald Koschinski wrote: > > > same for me, no more crashes - but zope needs very much memory (logo :-(() > > > > I will try know python 2.1.2. > > > > > OK -- our Zope 2.5.0 betas 3 and 4 have a binary python in them that > contains the critical ceval.c patch. > -- Ideas don't stay in some minds very long because they don't like solitary confinement.

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Upgrading to python 2.1.2 and Zope 2.5b4
by Tony McDonald 17 Jan '02

17 Jan '02

Hi all, I want to upgrade to python 2.1.2 (from an existing 2.1 installation) and at the same time upgrade to 2.5b4 in the hopes that this combination will fix the threading problem under Solaris. Q1: Is this the right combination to use, I've read that I should use 2.1.2 and 2.4.4 (possible numbering scheme). If so, I can wait (but we are getting core dumps regularly now) Q2: (and apologies, as this is a more python-orientated question) Can I just do a 'make install' of python 2.1.2 and be sure that it's not going to make my MySQL and other modules in site-packages unusable? (sorry if this is a daft question - I have a *lot* of zope sites using python 2.1 at the moment) Many thanks Tone -- Dr Tony McDonald, Assistant Director, FMCC, http://www.fmcc.org.uk/ The Medical School, Newcastle University Tel: +44 191 243 6140 A Zope list for UK HE/FE http://www.fmcc.org.uk/mailman/listinfo/zope

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Re: [Zope-dev] Accessing objects starting with _
by Gary & Karyn 17 Jan '02

17 Jan '02

In a similar vein to Dieter's answer, depending on the rest of your situation you might also want to look at my VirtualHostFolder, now in beta at http://www.zope.org/Members/poster/VHF . If virtual hosts are any part of your set up, and you are willing to try a beta, I might be interested in creating a new HostOverride implementation for your need, in order to show the flexibility of my product and also to test my interface design. I would then not feel bad if you didn't end up using it, but would appreciate the chance to try my design out with a real need. So get back to me if this is of any interest to you (if you are not using virtual hosts then there is probably no reason for me to kick in here: the SiteAccess tool will do the job more efficiently, I would guess). Gary P.S. If you look at the product as released... Since this last beta release I am still tweaking interfaces for future design flexibility and current efficiency, as well as decoupling some of my own implementations to follow my interfaces better. I also now have a hard redirect (I mean a browser redirect) IHostOverride object that can be a part of a host object the same way an Alias can. The Alias object is not what you want, by the way: the design of that object is to alias folders only (because it does some path hacking tricks that are only pertinent to folders). I would have to build you another IHostOverride implementation, either (ideally) as some kind of generic stack rewriter modifiable through the web or (if that UI proves too problematic) as a rewriter specific to your FrontPage needs. Writing the redirect sub-object was pleasantly easy, an hour or less of work, so I make this offer in the expectation that it would be a quick diversion to add some new flexibility to my product. g

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allow_module broken in Zope 2.5?
by Casey Duncan 16 Jan '02

16 Jan '02

I am working on a patch for Formulator so that its exception classes can be imported into a Python Script. the following code works for Zope 2.3 and 2.4 but I get an unauthorized error when I try to import from this in 2.4 (Just tested b4, but not CVS). Here is the code from the module Errors.py in the Formulator product package dir: ---- """Exception Classes for Formulator""" # These classes are placed here so that they can be imported into TTW Python # scripts. To do so, add the following line to your Py script: # from Products.Formulator.Errors import ValidationError, FormValidationError from Products.PythonScripts.Utility import allow_module, allow_class allow_module('Products.Formulator.Errors') class FormValidationError(Exception): def __init__(self, errors, result): Exception.__init__(self,"Form Validation Error") self.errors = errors self.result = result allow_class(FormValidationError) class ValidationError(Exception): def __init__(self, error_key, field): Exception.__init__(self, error_key) self.error_key = error_key self.field_id = field.id self.field = field self.error_text = field.get_error_message(error_key) allow_class(ValidationError) ---- If you create a python script containing: from Products.Formulator.Errors import ValidationError, FormValidationError You get an Unauthorized exception in 2.5, but not in 2.4 or 2.3. I realize this should probably go in the collector, but I wanted to make sure I wasn't doing something dumb first. Thanks. /---------------------------------------------------\ Casey Duncan, Sr. Web Developer National Legal Aid and Defender Association c.duncan(a)nlada.org \---------------------------------------------------/

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ADV: Important Message about your Domain.
by Dave 16 Jan '02

16 Jan '02

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Bravery & Zope 2.5 Testers
by Matthew T. Kromer 16 Jan '02

16 Jan '02

OK, I am formulating a hypothesis that if you replace ExtensionClass.h in Zope 2.4 and Zope 2.5 with the following one: http://cvs.zope.org/~checkout~/Zope/lib/Components/ExtensionClass/src/Exten… (Which goes in lib/Components/ExtensionClass/src/ExtensionClass.h btw) and rebuild zope .... python2.1 wo_pcgi.py and rebuld any other modules you may have which depend on extension class that some of the segfaults could go away. I have one person testing this right now, and am looking for others to prove it. I have *not* been able to reproduce any crashing problems (even Martijn Faassens one) so I can't tell what may be going wrong for sure.

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One object where there should be two
by Adrian Hungate 16 Jan '02

16 Jan '02

I am having a problem with XMLKit. I have the following code in which should use one disk based DTML Method and produce two slightly different creation forms, one for XML and one for RSS (a specialization of the XML form):- manage_addRSSDocumentForm = Globals.DTMLFile('www/addXMLDocument', globals(), kind='RSS') manage_addXMLDocumentForm = Globals.DTMLFile('www/addXMLDocument', globals(), kind='XML') The problem is that both of my constructors run the RSS form, the XML version never gets displayed. I have checked the code in __init__ and it appears fine:- context.registerClass( XMLDocument.XMLDocument, meta_type='XML Document', permission='Add XML Documents', icon='www/XMLDocument.gif', constructors=( XMLDocument.manage_addXMLDocumentForm, XMLDocument.manage_addXMLDocument, ), ) context.registerClass( XMLDocument.RSSDocument, meta_type='RSS Document', permission='Add RSS Documents', icon='www/RSSDocument.gif', constructors=( XMLDocument.manage_addRSSDocumentForm, XMLDocument.manage_addRSSDocument, ), ) I've tried just about everything I can think of, can anyone shed any light? Is this a special rule I have broken? Thanks. Adrian... -- Adrian Hungate All views expressed in this email are those of the whole world, however some people don't realise this yet.

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Zope 2.5.0b4 problems w/ ZEO
by Andrew Sydelko 16 Jan '02

16 Jan '02

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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Using Queue within a Zope product
by Max Slimmer 16 Jan '02

16 Jan '02

I need to put messages into a queue from within a Zclass, and then get and process them from an external long running process. I have created a class which imports a derivative of queue, the class instantiates a queue as a class object. The idea is that the queue will use a persistent object for the queue (list), and then some external process can also use the same object(list) in its queue processing. Both the zclasses that inherit from this queue and the external process must use the same mutexes... Questions: 1 Should the queue.queue object be made persistent or should we instantiate it with an external list which is the persistent object. Can either of these be done an how. 2. Assuming we can do something like the above what are the considerations wrt package distribution. Max Slimmer Solutions Architect eMail: Max.Slimmer(a)veritas.com Service Development - ECS Office:(707)829-2450 VERITAS Software Inc. Cell: (707)280-9299

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