[Zope] AttributeError: RESPONSE ?!

[Peter Sabaini]

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_of_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/PatDetail/conclusion_of_treatment/service_formprocessor/displayForm>,
       'root': <Application instance at b5194d40>,
       'template': <PageTemplateFile 
at /siopen_r_net/service_htmlpresenter/hrs_conclusion_of_treatment_conclusion_of_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