[Zope] AttributeError: RESPONSE ?!
Peter Sabaini
peter at sabaini.at
Thu Feb 10 08:44:15 EST 2005
On Thursday 10 February 2005 13:58, you wrote:
> I don't recommend using 2.4
> Python 2.4 is not a supported version for Zope 2.7.4.
i wouldn't for production use, but for testing it works ok.
well our software ran under python2.4 (mostly) but unfortunately i can still
reproduce the AttributeError: RESPONSE and AttributeError: SESSION, with
similar symptoms.
any ideas?
- 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 13:28
> À : zope at zope.org
> Objet : Re: [Zope] AttributeError: RESPONSE ?!
>
> On Thursday 10 February 2005 13:01, Pascal Peregrina wrote:
> > I can't see what could be wrong there , specially if the issue appears
> > randomly... :(
>
> right.
>
> > 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.
>
> yes, i stumbled upon this too.
>
> > I would suggest that you have a try on python 2.3.4
>
> i'm compiling python 2.4 right now and will have a try with this; another
> option would be to try a self-compiled 2.3.5 version (i've been using the
> one
> packaged with debian sid till now)
>
> - peter.
>
> > 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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