On 26.04.2006, at 16:52, David Pratt wrote:

Hi Bernd. This is a bit unsettling. I realize as a practical matter, folks want their sites to run so the recommendation for zserver. It would be good to know what it is causing this problem with twisted. Anyone know how widespread this is. Anyone else with this experience.

Hi David

Sorry, but I don't know where to place this bug. I thought i was the only one who got it. I asked stephan on the sprint about the cause, he didn't know either, so i thought it was a missconfiguration of my deployment first. I can't reproduce it now.

I think it has something to do with files which are not that small e.g. 1MB and multiple requests, but I am not sure.

The twisted as default is really annoying, because the option for zserver implies that twisted is more stable.




Regards,
David

Bernd Dorn wrote:
On 25.04.2006, at 19:38, ksmith99 wrote:

Hi All,

I'm using Zope 3.2.0 with Python 2.4.1, this error is popping up and
crashing my zope. Does anyone know where I should start looking for
problems?

i've had the same problem, seems that it has something to do with the twisted server, because on zserver this does not happen
workaround: make a zserver instance mkzopeinstance -zserver option
Thanks,

Ksmith


2006-04-22T20:53:59 ERROR SiteError Exception while getting
IExceptionSideEffects adapter
Traceback (most recent call last):
  File
"/home/admin/downloads/Zope-3.2.0/build/lib.linux-i686-2.4/zope/ app/publication/zopepublication.py",
line 357, in handleException
    adapter = IExceptionSideEffects(exception, None)
  File
"/home/admin/downloads/Zope-3.2.0/build/lib.linux-i686-2.4/zope/ interface/interface.py",
line 675, in __call__
    adapter = self.__adapt__(obj)
  File
"/home/admin/downloads/Zope-3.2.0/build/lib.linux-i686-2.4/zope/ interface/interface.py",
line 742, in __adapt__
    adapter = hook(self, obj)
  File
"/home/admin/downloads/Zope-3.2.0/build/lib.linux-i686-2.4/ twisted/python/components.py",
line 124, in _hook
    factory = lookup(declarations.providedBy(ob), iface)
  File
"/home/admin/downloads/Zope-3.2.0/build/lib.linux-i686-2.4/zope/ interface/adapter.py",
line 401, in lookup1
    return self.lookup((required,), provided, name, default)
  File
"/home/admin/downloads/Zope-3.2.0/build/lib.linux-i686-2.4/zope/ interface/adapter.py",
line 333, in lookup
    byname = s.get(provided)
  File
"/home/admin/downloads/Zope-3.2.0/build/lib.linux-i686-2.4/zope/ interface/adapter.py",
line 253, in get
    self.clean()
  File
"/home/admin/downloads/Zope-3.2.0/build/lib.linux-i686-2.4/zope/ interface/adapter.py",
line 159, in clean
    base.unsubscribe(self)
  File
"/home/admin/downloads/Zope-3.2.0/build/lib.linux-i686-2.4/zope/ interface/adapter.py",
line 280, in unsubscribe
    raise KeyError(dependent)
KeyError: <Surrogate(<zope.interface.Provides object at 0x42340bac>)>
------
2006-04-22T22:08:59 ERROR SiteError
http://www.edwardmontgomeryfineart.com/artists/anne_blair_brown/ ArtCollection/lunch_break/@@viewart/thumbnail
Traceback (most recent call last):
  File
"/home/admin/downloads/Zope-3.2.0/build/lib.linux-i686-2.4/zope/ publisher/publish.py",
line 138, in publish
    result = publication.callObject(request, object)
  File
"/home/admin/downloads/Zope-3.2.0/build/lib.linux-i686-2.4/zope/ app/publication/zopepublication.py",
line 161, in callObject
    return mapply(ob, request.getPositionalArguments(), request)
  File
"/home/admin/downloads/Zope-3.2.0/build/lib.linux-i686-2.4/zope/ publisher/publish.py",
line 113, in mapply
    return debug_call(object, args)
  File
"/home/admin/downloads/Zope-3.2.0/build/lib.linux-i686-2.4/zope/ publisher/publish.py",
line 119, in debug_call
    return object(*args)
File "/home/admin/myzope/z1/lib/python/gallerymaker/browser/ photo.py",
line 76, in __call__
    image.contentType)
  File
"/home/admin/downloads/Zope-3.2.0/build/lib.linux-i686-2.4/zope/ security/checker.py",
line 475, in check
    self._checker2.check(object, name)
  File
"/home/admin/downloads/Zope-3.2.0/build/lib.linux-i686-2.4/zope/ app/securitypolicy/zopepolicy.py",
line 278, in checkPermission
    if not self.cached_decision(
  File
"/home/admin/downloads/Zope-3.2.0/build/lib.linux-i686-2.4/zope/ app/securitypolicy/zopepolicy.py",
line 92, in cached_decision
decision = self.cached_prinper(parent, principal, groups, permission)
  File
"/home/admin/downloads/Zope-3.2.0/build/lib.linux-i686-2.4/zope/ app/securitypolicy/zopepolicy.py",
line 138, in cached_prinper
    prinper = IPrincipalPermissionMap(parent, None)
  File
"/home/admin/downloads/Zope-3.2.0/build/lib.linux-i686-2.4/zope/ interface/interface.py",
line 675, in __call__
    adapter = self.__adapt__(obj)
  File
"/home/admin/downloads/Zope-3.2.0/build/lib.linux-i686-2.4/zope/ interface/interface.py",
line 742, in __adapt__
    adapter = hook(self, obj)
  File
"/home/admin/downloads/Zope-3.2.0/build/lib.linux-i686-2.4/ twisted/python/components.py",
line 124, in _hook
    factory = lookup(declarations.providedBy(ob), iface)
  File
"/home/admin/downloads/Zope-3.2.0/build/lib.linux-i686-2.4/zope/ interface/adapter.py",
line 401, in lookup1
    return self.lookup((required,), provided, name, default)
  File
"/home/admin/downloads/Zope-3.2.0/build/lib.linux-i686-2.4/zope/ interface/adapter.py",
line 333, in lookup
    byname = s.get(provided)
  File
"/home/admin/downloads/Zope-3.2.0/build/lib.linux-i686-2.4/zope/ interface/adapter.py",
line 253, in get
    self.clean()
  File
"/home/admin/downloads/Zope-3.2.0/build/lib.linux-i686-2.4/zope/ interface/adapter.py",
line 159, in clean
    base.unsubscribe(self)
  File
"/home/admin/downloads/Zope-3.2.0/build/lib.linux-i686-2.4/zope/ interface/adapter.py",
line 280, in unsubscribe
    raise KeyError(dependent)
KeyError: <Surrogate(<zope.interface.Provides object at 0x42d8608c>)>
------
2006-04-24T14:08:28 ERROR SiteError http://207.210.78.157:8080
Traceback (most recent call last):
  File
"/home/admin/downloads/Zope-3.2.0/build/lib.linux-i686-2.4/zope/ publisher/publish.py",
line 132, in publish
    publication.beforeTraversal(request)
  File
"/home/admin/downloads/Zope-3.2.0/build/lib.linux-i686-2.4/zope/ app/publication/zopepublication.py",
line 82, in beforeTraversal
    p = prin_reg.authenticate(request)
  File
"/home/admin/downloads/Zope-3.2.0/build/lib.linux-i686-2.4/zope/ app/security/principalregistry.py",
line 38, in authenticate
    a = interfaces.ILoginPassword(request, None)
  File
"/home/admin/downloads/Zope-3.2.0/build/lib.linux-i686-2.4/zope/ interface/interface.py",
line 675, in __call__
    adapter = self.__adapt__(obj)
  File
"/home/admin/downloads/Zope-3.2.0/build/lib.linux-i686-2.4/zope/ interface/interface.py",
line 742, in __adapt__
    adapter = hook(self, obj)
  File
"/home/admin/downloads/Zope-3.2.0/build/lib.linux-i686-2.4/zope/ app/component/hooks.py",
line 96, in adapter_hook
    return siteinfo.adapter_hook(interface, object, name, default)
  File
"/home/admin/downloads/Zope-3.2.0/build/lib.linux-i686-2.4/zope/ interface/adapter.py",
line 413, in adapter_hook
    factory = self.lookup1(providedBy(object), interface, name)
  File
"/home/admin/downloads/Zope-3.2.0/build/lib.linux-i686-2.4/zope/ interface/adapter.py",
line 401, in lookup1
    return self.lookup((required,), provided, name, default)
  File
"/home/admin/downloads/Zope-3.2.0/build/lib.linux-i686-2.4/zope/ interface/adapter.py",
line 333, in lookup
    byname = s.get(provided)
  File
"/home/admin/downloads/Zope-3.2.0/build/lib.linux-i686-2.4/zope/ interface/adapter.py",
line 253, in get
    self.clean()
  File
"/home/admin/downloads/Zope-3.2.0/build/lib.linux-i686-2.4/zope/ interface/adapter.py",
line 159, in clean
    base.unsubscribe(self)
  File
"/home/admin/downloads/Zope-3.2.0/build/lib.linux-i686-2.4/zope/ interface/adapter.py",
line 280, in unsubscribe
    raise KeyError(dependent)
KeyError: <Surrogate(<zope.interface.Provides object at 0x4487120c>)>

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