September 2008 - Zope

which platform independent database?
by Jaroslav Lukesh 24 Sep '08

24 Sep '08

Hi all, Does somebody know some free database and free database adapter for Zope, which exists for Linux and for windows too, please? Do you know some pros/cons and some wiev from praxis for that? I know, Gadfly, but this is really tiny, with problematic backup (need to disconnect, make backup and connect), sometimes it make mishmash in datafiles and then you need your backup... Many thanks, J. Lukesh

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Zope error getting Plone running on HP UX
by sjcurt02 22 Sep '08

22 Sep '08

I've used the Plone-3.1.5.1-ex-UnifiedInstaller to install all necessary components on an HP-UX B.11.11 U 9000/800/L3000-8x system. The Zope control pannel displays the following: Zope Version: (Zope 2.10.6-final, python 2.4.5, hp-ux11) Python Version: 2.4.5 (#1, Sep 5 2008, 13:21:39) [GCC 3.3.2] System Platform: hp-ux11 SOFTWARE_HOME: /public/plone/zinstance/parts/zope2/lib/python ZOPE_HOME: /public/plone/zinstance/parts/zope2 INSTANCE_HOME: /public/plone/zinstance/parts/instance CLIENT_HOME: /public/plone/zinstance/var/instance Network Services: ZServer.HTTPServer.zhttp_server (Port: 9080) Process Id: 14823 (5) Running For: 4 min 54 sec Accessing the Plone site results in a bus error and core dump. Verbose debugging shows: <snip> # trying /public/plone/buildout-cache/eggs/plone.keyring-1.2-py2.4.egg/plone/keyring/random.sl # trying /public/plone/buildout-cache/eggs/plone.keyring-1.2-py2.4.egg/plone/keyring/randommodule.sl # trying /public/plone/buildout-cache/eggs/plone.keyring-1.2-py2.4.egg/plone/keyring/random.py # trying /public/plone/buildout-cache/eggs/plone.keyring-1.2-py2.4.egg/plone/keyring/random.pyc # trying /public/plone/buildout-cache/eggs/plone.contentrules-1.1.0-py2.4.egg/plone/contentrules/engine/storage.sl # trying /public/plone/buildout-cache/eggs/plone.contentrules-1.1.0-py2.4.egg/plone/contentrules/engine/storagemodule.sl # trying /public/plone/buildout-cache/eggs/plone.contentrules-1.1.0-py2.4.egg/plone/contentrules/engine/storage.py # /public/plone/buildout-cache/eggs/plone.contentrules-1.1.0-py2.4.egg/plone/contentrules/engine/storage.pyc matches /public/plone/buildout-cache/eggs/plone.contentrules-1.1.0-py2.4.egg/plone/contentrules/engine/storage.py import plone.contentrules.engine.storage # precompiled from /public/plone/buildout-cache/eggs/plone.contentrules-1.1.0-py2.4.egg/plone/contentrules/engine/storage.pyc # trying /public/plone/zinstance/parts/zope2/lib/python/ZPublisher/base64.sl # trying /public/plone/zinstance/parts/zope2/lib/python/ZPublisher/base64module.sl # trying /public/plone/zinstance/parts/zope2/lib/python/ZPublisher/base64.py # trying /public/plone/zinstance/parts/zope2/lib/python/ZPublisher/base64.pyc sh: 702 Bus error(coredump) # clear __builtin__._ # clear sys.path <snip> But a small test program that imports all the ZPublisher modules results in the following: <snip> # trying /public/plone/zinstance/parts/zope2/lib/python/ZPublisher/socket.sl # trying /public/plone/zinstance/parts/zope2/lib/python/ZPublisher/socketmodule.sl # trying /public/plone/zinstance/parts/zope2/lib/python/ZPublisher/socket.py # trying /public/plone/zinstance/parts/zope2/lib/python/ZPublisher/socket.pyc # trying /public/plone/zinstance/parts/zope2/lib/python/ZPublisher/mimetools.sl # trying /public/plone/zinstance/parts/zope2/lib/python/ZPublisher/mimetoolsmodule.sl # trying /public/plone/zinstance/parts/zope2/lib/python/ZPublisher/mimetools.py # trying /public/plone/zinstance/parts/zope2/lib/python/ZPublisher/mimetools.pyc # trying /public/plone/zinstance/parts/zope2/lib/python/ZPublisher/httplib.sl # trying /public/plone/zinstance/parts/zope2/lib/python/ZPublisher/httplibmodule.sl # trying /public/plone/zinstance/parts/zope2/lib/python/ZPublisher/httplib.py # trying /public/plone/zinstance/parts/zope2/lib/python/ZPublisher/httplib.pyc # trying /public/plone/zinstance/parts/zope2/lib/python/ZPublisher/base64.sl # trying /public/plone/zinstance/parts/zope2/lib/python/ZPublisher/base64module.sl # trying /public/plone/zinstance/parts/zope2/lib/python/ZPublisher/base64.py # trying /public/plone/zinstance/parts/zope2/lib/python/ZPublisher/base64.pyc # trying /public/plone/zinstance/parts/zope2/lib/python/ZPublisher/urlparse.sl # trying /public/plone/zinstance/parts/zope2/lib/python/ZPublisher/urlparsemodule.sl # trying /public/plone/zinstance/parts/zope2/lib/python/ZPublisher/urlparse.py # trying /public/plone/zinstance/parts/zope2/lib/python/ZPublisher/urlparse.pyc # trying /public/plone/zinstance/parts/zope2/lib/python/ZPublisher/HTTPRangeSupport.sl # trying /public/plone/zinstance/parts/zope2/lib/python/ZPublisher/HTTPRangeSupportmodule.sl # trying /public/plone/zinstance/parts/zope2/lib/python/ZPublisher/HTTPRangeSupport.py # /public/plone/zinstance/parts/zope2/lib/python/ZPublisher/HTTPRangeSupport.pyc matches /public/plone/zinstance/parts/zope2/lib/python/ZPublisher/HTTPRangeSupport.py import ZPublisher.HTTPRangeSupport # precompiled from /public/plone/zinstance/parts/zope2/lib/python/ZPublisher/HTTPRangeSupport.pyc <snip> The bus error seems to be coming from Python when it's trying to load a module from the ZPublish package, but the test program loads all the modules successfully. How can I find out what the Plone Python instance is trying to load that would cause a bus error? -- View this message in context: http://www.nabble.com/Zope-error-getting-Plone-running-on-HP-UX-tp19464280p… Sent from the Zope - General mailing list archive at Nabble.com.

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zope3, browser:addMenuItem, ZCML factory => ForbiddenAttribute: ('__call__', <...>)
by KLEIN Stéphane 20 Sep '08

20 Sep '08

Hi, I had some difficulty to use "browser:addMenuItem" ZCML directive : <browser:addMenuItem factory="myproject.MyContent" title="MyContent" permission="zope.ManageContent" /> with my Factory : <utility factory=".mycontent.MyContentFactory" name="myproject.MyContent" permission="zope.Public" /> mycontent.py file : from zope.component.interfaces import IFactory ... class MyContentFactory(object): implements(IFactory) title = u"Create a new MyContent" description = u"This factory instantiates new MyContent" def __call__(self): return MyContent() def getInterfaces(self): return implementedBy(MyContent) Now, if I try to append a MyContent object through ZMI I've this error : File "/home/harobed/buildout-eggs/zope.app.container-3.6.0-py2.4-linux- i686.egg/zope/app/container/browser/adding.py", line 145, in action content = factory() File "/home/harobed/buildout-eggs/zope.security-3.5.2-py2.4-linux- i686.egg/zope/security/checker.py", line 463, in check self._checker2.check(object, name) ForbiddenAttribute: ('__call__', <myproject.mycontent.MyContentFactory object at 0x93f5b0c>) Well, if I look in zope/app/container/browser/adding.py, in Adding.action method I see this comment : # TODO: If the factory wrapped by LocationProxy is already a Proxy, # then ProxyFactory does not do the right thing and the # original's checker info gets lost. No factory that was # registered via ZCML and was used via addMenuItem worked # here. (SR) I think "No factory that was registered via ZCML and was used via addMenuItem worked here" speak about my issue ? I've looked in zope.app.container browser test and I found this tip : mycontent.py file fixed with the tip : from zope.component.interfaces import IFactory import zope.security.checker ... class MyContentFactory(object): implements(IFactory) title = u"Create a new MyContent" description = u"This factory instantiates new MyContent" def __init__(self): self.__Security_checker__ = zope.security.checker.NamesChecker (['__call__']) def __call__(self): return MyContent() def getInterfaces(self): return implementedBy(MyContent) With this __Security_checker__ property my issue is fixed, now I can add a MyContent object through ZMI. Now, I've some comment and question about it : * I think this tip isn't "developer friendly", what is the good method ? * Philipp von Weitershausen's book (Web Component Development with Zope 3) give first version of my example (without __Security_checker__ tip) and its example didn't working with zope 3.4 (zopeproject use). Why this compatibility breaking ? Regards, Stephane

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Fwd: [Further investigations] Re: A question about __setstate__ in Shared/DC/ZRDB/Connection.py
by Marco Bizzarri 19 Sep '08

19 Sep '08

On Fri, Sep 19, 2008 at 4:15 PM, Tres Seaver <tseaver(a)palladion.com> wrote: > -----BEGIN PGP SIGNED MESSAGE----- > Hash: SHA1 > > Marco Bizzarri wrote: > >> Thanks for the suggestion, Tres, I'm trying it right now. > >> I think this could be responsible for the problem I had a few months >> ago, under the name: "Asking advice on a Zope "stuck" (or: what did I >> do wrong?)" > >> Do you think there will be some sort of "general" solution to the >> problem? I mean, the problem is actually that there are some objects >> which should not be ghostified, or am I wrong? > > There are two problems here: > > - Some objects need to be able to mark themselves as "sticky" for > at least the duration of a transaction; my workaround is hackish, > because if you omit the 'del conn._p_changed' it causes the object > to be written needlessly; likewise, if the conn object *is* actually > written to during the transaction, those changes will be discarded. I'm afraid the workaround is not working for me; I've modified the test as follows: class DoubleTransactionTest(ZopeTestCase.ZopeTestCase): def _add_big_image(self, value, data): Image.manage_addFile(self.app, "f%06s" % value, data , "a title") def test_showdouble(self): manage_addZPsycopgConnection(self.app, "db_connection", "", "host=localhost user=postgres dbname=template1") self.app._setObject('sql', SQL.SQL("sql", "", "db_connection", "", "select * from pg_tables")) self.app.db_connection._p_changed = 1 self.app.sql() data = "*" * (1 << 20) for x in range(1000): self._add_big_image(x, data) print "Added %s " % x self.app.sql() But I can still see two transactions (I'm not bothering about removing the _p_changed flag, because this is a one shot test, just to see if it works... maybe I'm putting this in the wrong place). > - We need a way to keep the Pdata objects from evicting "precious" > objects; ideally, Pdata instances would never be added to the cache > at all. I worked a bit on a spike in which the Pdata iterator part > would use a one-off connection with a zero-sized cache, but got > stuck somewhere; maybe somebody else can make it work. I would be glad to help, but my current understanding on "inner" Zope are not good enough (and my "free" time is even less ;)) > Tres. > - -- Do you mind if I forward this to ML? Regards Marco -- Marco Bizzarri http://notenotturne.blogspot.com/ http://iliveinpisa.blogspot.com/

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Re: [Zope] Displaying PIL Images in Zope Templates
by Nico Grubert 19 Sep '08

19 Sep '08

> > The <span> renders "<PIL.Image.Image instance at 0x23b97500>". > > How can I show the image? > Call its tag method. > <span tal:replace="structure item/tag" /> Hi Paul, how is the susi going? ;-) I tried <span tal:replace="structure item/tag" /> but I get the following error: ----------------------------------------------------------------------- Exception Type TraversalError Exception Value (<PIL.Image.Image instance at 0x18e84ad0>, 'tag') * Module Products.PageTemplates.Expressions, line 153, in _eval * Module zope.tales.expressions, line 124, in _eval * Module Products.PageTemplates.Expressions, line 83, in boboAwareZopeTraverse * Module zope.traversing.adapters, line 164, in traversePathElement __traceback_info__: (<PIL.Image.Image instance at 0x18e84ad0>, 'tag') * Module zope.traversing.adapters, line 52, in traverse __traceback_info__: (<PIL.Image.Image instance at 0x18e84ad0>, 'tag', []) TraversalError: (<PIL.Image.Image instance at 0x18e84ad0>, 'tag') ----------------------------------------------------------------------- However, I could not find any "tag" attribute in the lists of available attributes of the PIL.Image.Image instance. dir(<PIL_object>) returns: ['_Image__transformer', '__doc__', '__getattr__', '__init__', '__module__', '_copy', '_dump', '_expand', '_makeself', '_new', 'category', 'convert', 'copy', 'crop', 'draft', 'encoderconfig', 'encoderinfo', 'filter', 'format', 'format_description', 'fromstring', 'getbands', 'getbbox', 'getcolors', 'getdata', 'getextrema', 'getim', 'getpalette', 'getpixel', 'getprojection', 'histogram', 'im', 'info', 'load', 'mode', 'offset', 'palette', 'paste', 'point', 'putalpha', 'putdata', 'putpalette', 'putpixel', 'quantize', 'readonly', 'resize', 'rotate', 'save', 'seek', 'show', 'size', 'split', 'tell', 'thumbnail', 'tobitmap', 'tostring', 'transform', 'transpose', 'verify'] No "tag" method there... :-( Regards Nico

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Re: [Zope] how suppress http based authentication window of zope
by vaibhav pol 19 Sep '08

19 Sep '08

Hi , Thank you for replay . yes I know that product is using cookie based authentication.I want to know that is any work go around to support zope cookie based or form based authentication. I also I used CookieCrubmbler for Cookie based authentication. It Modify the request and server response and edit the header but because by using that we can suppress login window of browser but at the time logout it not modify the server response server send the Basic Authentication with 401 code . By seeing that browser kill user session I want is any other way to kill user session. means by sending any response or can i kill user session On Wed, Sep 17, 2008 at 6:35 PM, Andrew Milton <akm(a)theinternet.com.au>wrote: > +-------[ vaibhav pol ]---------------------- > | Dear All, > | As per my information zope provide http based > authentication and > | not support cookies based authentication . I used > | CookieCrumbler,exUserFolder,fcForum Products but it not so useful and > robust . > | I want to suppress login wnidow of the zope which genarated by browser > and > | replace to that I want to show user login form. Is any way to do that > if you > | have any information or any one who working on zope devlopment to make > zope > | support for cookies based authentication. > | please help me! > > I'm not quite sure what you're asking for here. The products you've > mentioned do support cookie authentication. > > What circumstances are you getting the Basic Auth popup that you want to > suppress? > > -- > Andrew Milton > akm(a)theinternet.com.au >

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ZEO configuration question ...
by Analog Kid 19 Sep '08

19 Sep '08

Hi All: I have a zeo setup which has one zeo server (say s1) and 5 zeo clients (say c1 through c5). All of these clients share a single Data.fs. Now, I need a zeo server (say s2) between just some of the zeo clients (say c1 and c2). all of these instances should share just one Dafa.fs file. Is this configuration possible/feasible. Any alternatives? Thanks for your time. -A

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z3c.dav issues
by Jayarajan Jn 19 Sep '08

19 Sep '08

Hi friends, i am doing some prototypes to try webDAV with zope3. I am using z3c.extfile to store files. I tried the zope.app.dav that is coming along with z3 distribution. it works fine for zope.app.file and zope.app.folder. it partialy works with z3c.extfile too. ie, i can download extfiles Anyways i saw in http://pypi.python.org/pypi/zope.app.dav/3.4.1 that z3c.dav is advanced than zope.app.dav. So i tries z3c.dav also. But i got error while accessing the / folder through webDAV. I have been using debian's(Gnome) local filesystem browser to do this but i get the following error on my weDAV client """ cannot open '/' The filename "/" indicates that this file is of type "x-directory/webdav". The contents of the file indicate that the file is of type "HTML document". If you open this file, the file might present a security risk to your system. Do not open the file unless you created the file yourself, or received the file from a trusted source. To open the file, rename the file to the correct extension for "HTML document", then open the file normally. Alternatively, use the Open With menu to choose a specific application for the file. """ May be i am missing something :? This is how i proceeded 1) started the zopeserver 2) connected to it via webDAV with server:localhost, port:8080, user:admin. 3) it works fine and displays the content of root folder. I can view,add, delete download etc..But its done by zope.app.dav now same thing with z3c.dav 1) (easy_install -N)ed z3c.dav, z3c.etree, z3c.conditionalviews 2) included the z3c.dav package and disabled zope.app.dav . (inside package-include) 3) try to access server through webDAV (exactly same as before) now it fires above said error. can any one tell me where i am missing? i have seen the z3c.davapp.* packages. Is there any work going to support extfile like this? i have adapted the z3c.davapp.zopeappfile codes to write a similar package for z3c.extfile too. But i cant test it properly if z3c.dav itself is not working for me :/ Note: i am using zope3.3.1+py2.4 setup And like many others demand i also would like to see a HOWTO for z3c.dav. Thanks to all in advance. jayaraj.

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Re: [Zope] [ZODB-Dev] Zope memory usage
by Manuel Vazquez Acosta 18 Sep '08

18 Sep '08

Alan, I'm replying to the Zope list also, because this issue is perhaps related to other components there. I'm running into the same situation: The python process running my Plone site is steadyly growing. I'm using Zope2.9.8-final (the one which works with Plone 2.5.5). What is the plan for Zope include such feature? Best regards, Manuel. Alan Runyan wrote: > There was a recent modification to limit the ZODB cache to a set size. i.e. > Limit the size of memory usage to 128MB. > > The original feature was implemented here: > http://svn.zope.org/ZODB/branches/dm-memory_size_limited-cache/ > > You can get the feature+3.8 branch of the ZODB from: > http://svn.zope.org/ZODB/branches/zcZODB-3.8/ > > The changes are also on trunk (will be ZODB 3.9). > > The goal of the modification is to try to put upper bounds on the size of > the database cache. Before this "size limited cache" the cache would grow > and if you had very large objects in the zodb cache -- your memory usage would > be surpringsly high. > > Please use this feature in your testing at upfront. And let Roche know this > feature has landed (if we was not monitoring svn checkins). The feature needs > to be test driven. Give it a go and report your experience. > > cheers > alan > > > On Wed, Sep 17, 2008 at 5:10 AM, Izak Burger <izak(a)upfrontsystems.co.za> wrote: >> Hi all, >> >> I'm sure this question has been asked before, but it drives me nuts so I >> figured I'll ask again. This is a problem that has been bugging me for >> ages. Why does zope memory use never decrease? Okay, I've seen it >> decrease maybe by a couple megabyte, but never by much. It seems the >> general way to run zope is to put in some kind of monitoring, and >> restart it when memory goes out of bounds. In general it always uses >> more and more RAM until the host starts paging to disk. This sort of >> baby-sitting just seems wrong to me. >> >> It doesn't seem to make any difference if you set the cache-size to a >> smaller number of objects or use a different number of threads. Over >> time things always go from good to bad and then on to worse. I have only >> two theories: a memory leak, or an issue with garbage collection (python >> side). >> >> It is possible that this is not a bug, my reasoning goes like this: The >> OS exposes a "virtual memory" picture to the application, ie, the >> application does not know how much of the RAM is real and how much is >> paged out. All it does is call malloc every now and then. Combined with >> a kernel that allows overcommit (which is in general a good thing), I >> see this going only one way. >> >> I'm hoping someone on this list has some insights into the issue. >> >> regards, >> Izak >> _______________________________________________ >> For more information about ZODB, see the ZODB Wiki: >> http://www.zope.org/Wikis/ZODB/ >> >> ZODB-Dev mailing list - ZODB-Dev(a)zope.org >> http://mail.zope.org/mailman/listinfo/zodb-dev >> > > >

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How to access the content of a file in a test suite in a portable way
by Marco Bizzarri 18 Sep '08

18 Sep '08

Hi all. I'm writing a number of acceptance tests where I need to compare whether the content of a text file is equals to another file. The comparision files are in a subdirectory of the acceptance test directory itself, therefore, once I know where my product is on the filesystem, I can access the test files from there. What is the accepted way to do know the directory of a product? Regards Marco -- Marco Bizzarri http://notenotturne.blogspot.com/ http://iliveinpisa.blogspot.com/

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