[Zope] AttributeError: RESPONSE ?!
Pascal Peregrina
Pperegrina at Lastminute.com
Thu Feb 10 07:01:24 EST 2005
I can't see what could be wrong there , specially if the issue appears
randomly... :(
I just noticed that you are using python 2.3.5
Something strange is that your issue looks like one of the bugs that should
precisely be fixed in that new version :
Bug #1055820 Cyclic garbage collection was not protecting against that
calling a live weakref to a piece of cyclic trash could resurrect an insane
mutation of the trash if any Python code ran during gc (via running a dead
object's __del__ method, running another callback on a weakref to a dead
object, or via any Python code run in any other thread that managed to
obtain the GIL while a __del__ or callback was running in the thread doing
gc). The most likely symptom was "impossible" AttributeEror exceptions,
appearing seemingly at random, on weakly referenced objects. The cure was to
clear all weakrefs to unreachable objects before allowing any callbacks to
run.
I would suggest that you have a try on python 2.3.4
But someone else may have better ideas...
Pascal
-----Message d'origine-----
De : zope-bounces at zope.org [mailto:zope-bounces at zope.org]De la part de
Peter Sabaini
Envoyé : jeudi 10 février 2005 12:34
À : zope at zope.org
Objet : Re: [Zope] AttributeError: RESPONSE ?!
On Thursday 10 February 2005 12:13, Pascal Peregrina wrote:
> Can we see what is at line 10 of your <PythonScript at
> /siopen_r_net/util/pageInit> ?
sure, its fairly harmless:
... comments ...
07 req = context.REQUEST
08
09 # turn off caching
10 resp = req.RESPONSE
11 resp.setHeader('Expires', 'Thu, 01 Dec 1994 16:00:00 GMT')
- peter.
> Pascal
>
> -----Message d'origine-----
> De : zope-bounces at zope.org [mailto:zope-bounces at zope.org]De la part de
> Peter Sabaini
> Envoyé : jeudi 10 février 2005 12:06
> À : zope at zope.org
> Objet : [Zope] AttributeError: RESPONSE ?!
>
>
> hi list,
>
> this one has got me stumped; from the traceback:
>
> """
> Module ZPublisher.HTTPRequest, line 1220, in __getattr__
>
> AttributeError: RESPONSE
> """
>
> AFAIK the REQUEST object should *always* have a RESPONSE attribute, right?
>
> background:
>
> * this happens under moderate load in our somewhat involved data entry
> application
>
> * load generated by apache benchmark at a concurrency level of 1-2 plus
> manual
> browsing
>
> * occurs at random, one out of 5 clicks maybe
>
> * ZEO setup, zope 2.7.4, Python 2.3.5 (#2, Feb 9 2005, 00:38:15) [GCC
> 3.3.5
>
> (Debian 1:3.3.5-8)] on linux2
>
>
> under similar conditions i sometimes also get an "AttributeError: SESSION"
> which looks like somehow REQUEST is loosing its attributes? can that
> happen?
>
>
> *any* thoughts greatly appreciated before i have to break out gdb and
> immerse
> myself for days in it :-/
>
> - peter.
>
>
>
> ps.: somewhat abbreviated traceback below
>
>
> Traceback (innermost last):
> Module ZPublisher.Publish, line 101, in publish
> Module ZPublisher.mapply, line 88, in mapply
> Module ZPublisher.Publish, line 39, in call_object
> Module Products.FormProcessor.FormProcessor, line 155, in displayForm
> Module Products.FormProcessor.FormProcessor, line 180, in view
> Module Products.FormProcessor.FormController, line 274, in view
> Module Products.FormProcessor.Presenter, line 1033, in render
> Module Products.FormProcessor.Presenter, line 413, in render
> Module Shared.DC.Scripts.Bindings, line 306, in __call__
> Module Products.UnrestrictedPageTemplateFiles.PageTemplateFile, line 32,
> in
> _bindAndExec
> Module Products.PageTemplates.PageTemplateFile, line 106, in _exec
> Module Products.PageTemplates.PageTemplate, line 96, in pt_render
> - <PageTemplateFile
> at
>
/siopen_r_net/service_htmlpresenter/hrs_conclusion_of_treatment_conclusion_
>o f_treatment
> used for /siopen_r_net/site/members/studies/HRNBL1/patients/PatDetail>
> Module TAL.TALInterpreter, line 190, in __call__
> Module TAL.TALInterpreter, line 234, in interpret
> Module TAL.TALInterpreter, line 409, in do_optTag_tal
> Module TAL.TALInterpreter, line 394, in do_optTag
> Module TAL.TALInterpreter, line 389, in no_tag
> Module TAL.TALInterpreter, line 234, in interpret
> Module TAL.TALInterpreter, line 671, in do_useMacro
> Module TAL.TALInterpreter, line 234, in interpret
> Module TAL.TALInterpreter, line 484, in do_insertText_tal
> Module Products.PageTemplates.TALES, line 227, in evaluateText
> Module Products.PageTemplates.TALES, line 221, in evaluate
> - URL: /siopen_r_net/standard_template.pt
> - Line 5, Column 0
> - Expression: standard:'here/util/pageInit'
> - Names:
> {'container': <ConfigurableFormView instance at ab841740>,
> 'context': <Folder instance at ac91c440>,
> 'default': <Products.PageTemplates.TALES.Default instance at
> 0xb72263cc>,
> 'here': <Folder instance at ac91c440>,
> 'loop': <SafeMapping instance at ab8417e0>,
> 'modules':
> <Products.PageTemplates.ZRPythonExpr._SecureModuleImporter
>
> instance at 0xb722628c>,
> 'nothing': None,
> 'options': {'args': (),
> 'pagemacro': [('version', '1.5'),
> ('mode', 'html'),
> ('setSourceFile',
> '/siopen_r_net/standard_template.pt'),
> ('startTag',
> ('html',
>
> -- snip --
>
> ('endScope', ()),
> ('rawtextColumn',
> ('\n\n
> </div>\n\n</div>\n\n\n\n</body>\n</html>',
> 7))]},
> 'repeat': <SafeMapping instance at ab8417e0>,
> 'request': <HTTPRequest,
>
URL=http://srn-elendil.telbiomed.at/members/studies/HRNBL1/patients/PatDeta
>i l/conclusion_of_treatment/service_formprocessor/displayForm>,
> 'root': <Application instance at b5194d40>,
> 'template': <PageTemplateFile
> at
>
/siopen_r_net/service_htmlpresenter/hrs_conclusion_of_treatment_conclusion_
>o f_treatment
> used for /siopen_r_net/site/members/studies/HRNBL1/patients/PatDetail>,
> 'traverse_subpath': [],
> 'user': p.sabaini}
> Module Products.PageTemplates.Expressions, line 201, in __call__
> Module Products.PageTemplates.Expressions, line 196, in _eval
> Module Products.PageTemplates.Expressions, line 95, in render
> Module Products.PageTemplates.ZRPythonExpr, line 73, in call_with_ns
> Module Shared.DC.Scripts.Bindings, line 320, in
__render_with_namespace__
> Module Shared.DC.Scripts.Bindings, line 343, in _bindAndExec
> Module Products.PythonScripts.PythonScript, line 323, in _exec
> Module None, line 10, in pageInit
> - <PythonScript at /siopen_r_net/util/pageInit>
> - Line 10
> Module ZPublisher.HTTPRequest, line 1220, in __getattr__
> AttributeError: RESPONSE
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--
===========================================
Peter Sabaini
ARC Seibersdorf research GmbH
Biomedical Engineering / eHealth systems
Reininghausstrasse 13/1
A-8020 Graz, Austria
T: +43 (0)316 586570-55
F: +43 (0)316 586570-54
E: sabaini at telbiomed.at
H: www.telbiomed.at
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