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Re: Triggering the persistence mechanism
by Chris McDonough 15 Dec '05

15 Dec '05

There is nothing that needs to be done here. It's only if you *mutate* values stored in the session that you need to do explicit persistence triggering. I provided an example of doing this in my last email. - C On Dec 15, 2005, at 4:20 PM, Dennis Allison wrote: > > Chris McDonnough pointed out a problem with my setSessionVariable > code which I am now fixing. I want a generic routine to set a session > variable whether it is a simple variable, a list, or a dictionary. > > The question is one of triggering the persistence mechanism. If a > dictionary or list is stored in a session variable, what is needed to > ensure that the setSessionVariable() routine triggers the persistence > mechanism? > > Is it adequate to simply read the session variable in the > setSessionVariable() routine prior to writing it when the session > variable > is a dictionary or list? Or is something else needed? > > > >

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Fwd: [Zope] zopectl or runzope just won't start zope
by Qass 15 Dec '05

15 Dec '05

Thanks for your reply fm. The python version in my path is 2.3.5 and both python and zope were build from source. Zope is installed in /opt which is where the python 2.3.5 is too. I got rid of the zope instance I had running earlier and created a new instance in my home directory. Now when I run zopectl start from the /bin in the instance in my home directory I get the following error: . Traceback (most recent call last): File "/opt/zope-2.8.4/lib/python/zdaemon/zdrun.py", line 719, in ? main() File "/opt/zope-2.8.4/lib/python/zdaemon/zdrun.py", line 716, in main d.main(args) File "/opt/zope-2.8.4/lib/python/zdaemon/zdrun.py", line 243, in main self.run() File "/opt/zope-2.8.4/lib/python/zdaemon/zdrun.py", line 256, in run self.opensocket() File "/opt/zope-2.8.4/lib/python/zdaemon/zdrun.py", line 278, in opensocket sock.bind(tempname) File "<string>", line 1, in bind socket.error: (2, 'No such file or directory') I then tried to run 'runzope' and got the following which don't look like errors: /home/blah/zope/Products/PortalTransforms/TransformEngine.py:18: DeprecationWarning: The module, 'Products.CMFCore.CMFCorePermissions' is a deprecated compatiblity alias for 'Products.CMFCore.permissions'; please use the new module instead. from Products.CMFCore import CMFCorePermissions /home/blah/zope/Products/CMFCore/utils.py:629: DeprecationWarning: format_stx() will be removed in CMF 1.6. Please use StructuredText.StructuredText.HTML instead. DeprecationWarning) /home/sra/zope/Products/kupu/__init__.py:23: DeprecationWarning: The Zope package has been renamed to Zope2. Import of a package named 'Zope' is deprecated and will be disabled starting in Zope 2.11. import Zope /home/blah/zope/Products/CMFFormController/__init__.py:25: DeprecationWarning: The product_name parameter of ToolInit is deprecated and will be ignored in CMF1.6: CMFFormController product_name='CMFFormController', icon='tool.gif', /home/blah/zope/Products/GroupUserFolder/__init__.py:99: DeprecationWarning: The product_name parameter of ToolInit is deprecated and will be ignored in CMF1.6: GroupUserFolder , icon="tool.gif" /home/sra/zope/Products/MimetypesRegistry/__init__.py:34: DeprecationWarning: The product_name parameter of ToolInit is deprecated and will be ignored in CMF1.6: MimetypesRegistry icon="tool.gif", /home/blah/zope/Products/PloneLanguageTool/__init__.py:17: DeprecationWarning: The product_name parameter of ToolInit is deprecated and will be ignored in CMF1.6: PloneLanguageTool icon='tool.gif', /home/sra/zope/Products/PortalTransforms/__init__.py:35: DeprecationWarning: The product_name parameter of ToolInit is deprecated and will be ignored in CMF1.6: PortalTransforms icon="tool.gif", /home/blah/zope/Products/ResourceRegistries/__init__.py:20: DeprecationWarning: The product_name parameter of ToolInit is deprecated and will be ignored in CMF1.6: ResourceRegistries icon = 'tool.gif', /home/blah/zope/Products/kupu/plone/__init__.py:31: DeprecationWarning: The product_name parameter of ToolInit is deprecated and will be ignored in CMF1.6: kupu icon="kupu_icon.gif", I finally made it to the ZMI, moved the folders from the untarred Plone tarball into the Products folder in the instance running in my home directory and restart the zope instance using runzope. I expect to see "Plone Site" in the drop down menu on the right but don't. I do a "Plone Language Tool". Could you help me figure out why "Plone Site" won't show up. Thank you very much for your time. Qass On 12/14/05, Floyd May <fmay(a)okcareertech.org> wrote: > First, I would recommend against changing anything in any file at this point > except configuration files. > > Next, verify that the correct python version is being used. It's easy to > have two pythons side-by-side on the same linux system. If you built Zope > from source, you (probably) should build python from source as well. > However, if you used an installable package for Zope, I would recommend > staying with whatever version pairing of Zope/Python that your Linux > distribution has by default. It's simpler that way, and will probably solve > your problem. I know that I've built Zope before where it's pointed at the > wrong python version, and got things all screwed up for me. Use "`which > python` -V" (those are backtics) to figure out the version that your $PATH > points to by default. > > If you *are* building from source, verify that you used > --with-python="/path/to/python2.3.5" when you ran the > configure script for Zope. The configure script should(?) tell you if > there's a problem with any module dependencies. Again, if building Zope > from source, it's probably best that you use a python built from source as > well. > > Good Luck! > fm > > > On 12/14/05, Qass <qassair(a)gmail.com> wrote: > > > > Hi: > > > > I'm new to zope and yesterday installed zope 2.8.4 on a linux system > > running python 2.3.5 > > Having followed installation instructions I got to the point of > > 'zopectl start' and got the following error message while trying both > > 'runzope' and 'zopectl'. > > > > I've tried installing different versions of Zope and get the same > > error (error absent with Zope 3). At one point, Zope did start (I > > moved it to a different port) but when I tried installing Plone in the > > Products directory of the zope instance, the 'Plone Site' did not show > > up in the drop down menu on the right hand side of the ZMI. Which is > > why I decided to reinstall and have been getting errors since. I > > haven't messed around with the Python installation at all. > > > > In this latest install I ran 'make instance' intead of 'make install' > > just to see if I would get the same error as I did yesterday when I > > had an instance of Zope running and I did. > > > > Any help in trying to fix this would be highly appreciated. I've tried > > changing PYTHONPATH in the zopectl file but that just leads to more > > and more errors. > > > > Traceback (most recent call last): > > File > "/blah//Zope-2.8.4-final/lib/python/Zope2/Startup/run.py", > line 56, in ? > > run() > > File > "/blah/Zope-2.8.4-final/lib/python/Zope2/Startup/run.py", > line 17, in run > > import Zope2.Startup > > File "/blah/Zope-2.8.4-final/lib/python/Zope2/__init__.py", line 60, in > ? > > from Zope2.Startup.run import configure > > File > "/network/share/home/sra/Zope-2.8.4-final/lib/python/Zope2/Startup/__init__.py", > > line 24, in ? > > import ZConfig > > File "/blah/Zope-2.8.4-final > /lib/python/ZConfig/__init__.py", line 21, in ? > > from ZConfig.loader import loadConfig, loadConfigFile > > File "/blah/Zope-2.8.4-final/lib/python/ZConfig/loader.py", line 23, in > ? > > import ZConfig.datatypes > > File > "/blah/Zope-2.8.4-final/lib/python/ZConfig/datatypes.py", > line 19, in ? > > import datetime > > File > "/blah/Zope-2.8.4-final/lib/python/DateTime/__init__.py", > line 13, in ? > > from DateTime import DateTime > > File > "/blah/Zope-2.8.4-final/lib/python/DateTime/DateTime.py", > line 21, in ? > > from datetime import datetime > > File > "/blah/Zope-2.8.4-final/lib/python/DateTime/DateTime.py", > line 21, in ? > > from datetime import datetime > > ImportError: cannot import name datetime > > > > Thank you very much for your help. > > > > Qass > > _______________________________________________ > > Zope maillist - Zope(a)zope.org > > http://mail.zope.org/mailman/listinfo/zope > > ** No cross posts or HTML encoding! ** > > (Related lists - > > http://mail.zope.org/mailman/listinfo/zope-announce > > http://mail.zope.org/mailman/listinfo/zope-dev ) > > > > > > > > -- > Floyd May > Senior Systems Analyst > CTLN - CareerTech Learning Network > fmay(a)okcareertech.org > _______________________________________________ > Zope maillist - Zope(a)zope.org > http://mail.zope.org/mailman/listinfo/zope > ** No cross posts or HTML encoding! ** > (Related lists - > http://mail.zope.org/mailman/listinfo/zope-announce > http://mail.zope.org/mailman/listinfo/zope-dev ) > > >

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Trying zope on Linux
by Allen Huang 15 Dec '05

15 Dec '05

I'm trying zope on linux but I have come a cross a problem. I windows, I simply changed the port number from 8080 to 80 in zope.conf so I could get to my site without typeing the port. But in Linux, I did the same thing but it always tells me that some other server already occupied this port. (and I just started too, so there shouldn't be any server. right??) I'm now trying to figure out what server to close but with no luck at all.. can someone help me so I can display my site on port 80? --------------------------------- Yahoo! Shopping Find Great Deals on Holiday Gifts at Yahoo! Shopping

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user folder question
by Chris Cole 15 Dec '05

15 Dec '05

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Hey all, I'm currently trying to setup a custom zope instance for our c.s. department at school. Currently we run a totally linux infrastructure with ldap authentication which we would also like to tie into zope. My question is not how to authenticate against ldap, but I was wondering if there is a way to disable the default user folder and in automagically put an ldapuser folder in its place on creation of a new instance. I'm kinda new to zope, and I'm sure it's possible, but if someone could at least point me in the right direction i would appreciate it. - --Chris -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.1 (GNU/Linux) Comment: Using GnuPG with Thunderbird - http://enigmail.mozdev.org iD8DBQFDob1SASJ6G3eRc6ARAsY6AJ0Zt52lG+zsg10QlCGB3lq3SUCswQCgu3S1 lmDaYgZV2/MgPz7foC1EaJc= =5/ig -----END PGP SIGNATURE-----

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RE: [Zope] Zope 2.8.4+Latest cygwin installation
by Pascal Peregrina 15 Dec '05

15 Dec '05

Ok, in case anyone is interested, this nasty code change made it : In Zope-2.8.4-final/lib/python/ZODB/serialize.py: Change : return klass.__new__(klass, *args) To : try: result=klass.__new__(klass, *args) except TypeError: result=Persistent.__new__(klass, *args) return result Pascal -----Message d'origine----- De : zope-bounces(a)zope.org [mailto:zope-bounces@zope.org] De la part de Pascal Peregrina Envoyé : jeudi 15 décembre 2005 12:51 À : zope(a)zope.org Objet : RE: [Zope] Zope 2.8.4+Latest cygwin installation Ok, just found it has already been reported several months ago, even with python 2.3.x: http://www.zope.org/Collectors/Zope/1725 Does someone know of any kind of temporary workaround for this ? Thanks ! Pascal -----Message d'origine----- De : zope-bounces(a)zope.org [mailto:zope-bounces@zope.org] De la part de Pascal Peregrina Envoyé : jeudi 15 décembre 2005 12:25 À : zope(a)zope.org Objet : [Zope] Zope 2.8.4+Latest cygwin installation Hi, I would like to know if anyone has been able to compile and run Zope 2.8.4 with Cygwin. I just installed cygwin with latest stable packages. I compiled python 2.4.2 (I know, not the supported version, so I am about to try 2.3.5 now) I had issues with the socket module, and from google I applied a workaround that worked fine : in Modules/socketmodule.c Change : #if defined(__sgi) && !defined(INET_ADDRSTRLEN) #define INET_ADDRSTRLEN 16 #endif To : /*#if defined(__sgi) && !defined(INET_ADDRSTRLEN)*/ #define INET_ADDRSTRLEN 16 /*#endif*/ I made several python tests and all looks fine. Then I compiled Zope 2.8.4 without any issue. But when I run it, I get this error: Site Error An error was encountered while publishing this resource. exceptions.TypeError Sorry, a site error occurred. Traceback (innermost last): Module ZPublisher.Publish, line 187, in publish_module_standard Module Products.Localizer, line 58, in new_publish Module ZPublisher.Publish, line 144, in publish Module Zope2.App.startup, line 174, in zpublisher_exception_hook Module App.ZApplication, line 60, in __bobo_traverse__ Module UserDict, line 17, in __getitem__ Module ZODB.Connection, line 704, in setstate Module ZODB.Connection, line 760, in _setstate Module ZODB.serialize, line 495, in setGhostState Module ZODB.serialize, line 488, in getState Module ZODB.serialize, line 436, in _persistent_load Module ZODB.Connection, line 208, in get Module ZODB.serialize, line 482, in getGhost TypeError: Acquirer.__new__(Application) is not safe, use Persistence.Persistent.__new__() Does anyone know what I can do ? Thanks a lot. Pascal ********************************************************************** This email and any files transmitted with it are confidential and intended solely for the use of the individual or entity to whom they are addressed. If you have received this email in error please notify the system manager. This footnote also confirms that this email message has been swept by MIMEsweeper for the presence of computer viruses. www.mimesweeper.com ********************************************************************** _______________________________________________ Zope maillist - Zope(a)zope.org http://mail.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://mail.zope.org/mailman/listinfo/zope-announce http://mail.zope.org/mailman/listinfo/zope-dev ) _______________________________________________ Zope maillist - Zope(a)zope.org http://mail.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://mail.zope.org/mailman/listinfo/zope-announce http://mail.zope.org/mailman/listinfo/zope-dev )

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Re: [Zope-dev] user folder question
by Jens Vagelpohl 15 Dec '05

15 Dec '05

<redirecting this to the normal zope list where it makes more sense, please continue there> On 15 Dec 2005, at 16:58, Chris Cole wrote: > > Hey all, > I'm currently trying to setup a custom zope instance for our c.s. > department at school. Currently we run a totally linux infrastructure > with ldap authentication which we would also like to tie into zope. My > question is not how to authenticate against ldap, but I was > wondering if > there is a way to disable the default user folder and in automagically > put an ldapuser folder in its place on creation of a new instance. > I'm > kinda new to zope, and I'm sure it's possible, but if someone could at > least point me in the right direction i would appreciate it. If you're talking about "instance" as in installing a Zope $INSTANCE_HOME, then you could "prepare" a ZODB where you have done all that manually and re-use that for every instance you build out. If you run ZEO and they all connect to the same database there is no need - you switch it out once and all instances "see" that. jens

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sessions in the presence of conflicts
by Dennis Allison 15 Dec '05

15 Dec '05

Zope 2.8.4, ZODB 3.4.2 I am still trying to resolve a "session variables in the presence of conflicts" problem. The observed symptom is that suddenly either some session variables disappear or all session variables disappear. In both cases, Zope has raised a KeyError exception for the a particular session variable because it is not present and an attempt was being made to access it from the session. The cause appears to be related to the presence of a conflict error and a botched recovery, but the exact mechanism remains a mystery. Zope equates a session object with a TransientObject. For our instance, that's fine, since our only TransientObject is a session. For the general case, I would have thought a SessionObject inheriting from TransiendObject would have been used so that conflict resolution for sessions could be easily specialized. The conflict resolution for a TransientObject (that is, a Session Object) is clearly suboptimal. In the next paragraphs I'll review what is currently done and then propose a different approach which I am about to implement for our systems. Comments, corrections, and suggestions much appreciated. _p_resolveConflict(self, oldState, savedState, newState) returns the state of the object after resolving different changes. The arguments are: oldState -- state of the object at the beginning of the current transaction (mutable) savedState -- state currently stored in the database. This state was written after oldState and reflect changes made by a transaction that committed before the current transaction (immutable) newState -- state after changes made by the current transaction (immutable) The standard conflict resolution for a TransientObject resolves according to the following rules: 1. if any of the states are invalid (that is, has a key '_invalid') return the invalid state. 2. if any any of the attributes ['token','id','_created'] differ then there is a conflict, raise the conflict exception. 3. choose the state most recently modified, if possible. 4. otherwise, choose the state most recently accessed. It seems to me that we can do much better for sessions because we know a bit about the semantics of sessions. A session object is a dictionary-like object mapping key-value pairs. Adding or deleting keys or changing the value associated with a key are independent operations and do not conflict unless the keys are duplicated in both the transactions. Any conflict resolution mechanism needs to be able to manage multiple keys independently since the session object is modified as a unit. In addition, new keys may be added and old keys deleted; any conflict resolution mechanism at the key level needs to be comprehend those operations. A more session-friendly conflict resolution might use: 1. if any of the states are invalid (that is, has a key '_invalid') return the invalid state. 2. if any any of the states attributes ['token','id','_created'] differ then there is a conflict, raise the conflict exception. 3. order the newState and savedState by modification time (or if that cannot be computed, by access time). 4. any key appearing in oldState's dictionary but not appearing in both savedState and newState should be removed from all. This corresponds to a key-value pair being deleted in one of the transactions. Insertions will be managed automatically by the updates. 5. beginning with the oldest, update oldState dictionary of key-value pairs using the dictionary part of newState and savedState. Return oldState. This does several things. First, it captures independent key-value changes made in both potentially conflicting transactions. Second, it provides a reasonable ordering for multiple (potentially conflicting) key-value pair updates. Third, it manages insertions and deletions to the session variable set in the presence of conflicts. Does this make sense? I have yet to figure out how to map a TransientObject "state" back to the object it represents, but it clearly is possible.

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HTTP compressed response
by Gabriel Genellina 15 Dec '05

15 Dec '05

Hello I wish to enable HTTP response compression. Looking at ZPublisher\HTTPResponse.py I see this method: def enableHTTPCompression(self,REQUEST={},force=0,disable=0,query=0): and I think I should invoke it with REQUEST=REQUEST to enable compression only when the client browser can handle it. But I dont know WHEN to do the call - should it be in (every) template used to generate a response? should I modify the response factory (make_response in ZServer\HTTPResponse.py) to invoke this? or what? Gabriel Genellina Softlab SRL

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Unauthorized exception when trying to access a list item
by Cameron Beattie 15 Dec '05

15 Dec '05

I am trying to access a value in a list. The script getDIDS_list is passed a list called listoflists: list = listoflists ret = [] tup = (0,1,2) factortup = (1,2) factor = 2 for i in range(len(list)): # 1 == 1 if i in tup: if i in factortup: x = list[i] * factor etc The code is a bit strange due to my testing. However zope gets upset when trying to evaluate list[i]: You are not allowed to access '1' in this context a.. Module Products.PageTemplates.ZRPythonExpr, line 47, in __call__ __traceback_info__: context.getDIDS_list(listoflists = DIDs) a.. Module Python expression "context.getDIDS_list(listoflists = DIDs)", line 1, in <expression> a.. Module Shared.DC.Scripts.Bindings, line 311, in __call__ a.. Module Shared.DC.Scripts.Bindings, line 348, in _bindAndExec a.. Module Products.PythonScripts.PythonScript, line 323, in _exec a.. Module None, line 10, in getDIDS_list <PythonScript at /Conversant/account/getDIDS_list> Line 10 a.. Module AccessControl.ZopeGuards, line 71, in guarded_getitem a.. Module AccessControl.ImplPython, line 529, in validate a.. Module AccessControl.ImplPython, line 329, in validate I've tried calling the script from the page template using here.getDIDS_list, container.getDIDS_list context.getDIDS_list but the problem persists. Am I accessing the list in the wrong way? Any advice would be appreciated. Regards Cameron

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XML-RPC within ZOPE
by Jan-Ole Esleben 15 Dec '05

15 Dec '05

Hi! Is it at all impossible to use XML-RPC _within_ a ZOPE architecture? What I mean is: I have a nested call structure: 1. Python script calls a method from a ZODB object 2. That method calls a Python module function 3. That module function dispatches an XML-RPC call to the same ZODB object called in step 1 4. This last call, which is rather complex, returns, and all the calls leading up to it return, sometimes doing some minor work When I use the same code _without_ any XML-RPC (the Zope server's self instead of the XML-RPC server object for that server), it works just fine. When I use XML-RPC, I get a ConflictError during the final return (from step 1), and I get it if I commit manually beforehand, so it must be the commit triggering it. The tricky thing is: nothing in my ZODB changes. I have several mutable _arguments_ that are passed on, but they are not default arguments and they don't get written to the ZODB. Is what I'm trying to do impossible for some reason? Or can I just make the whole call take place outside any transactions? Thanks in advance for any pointers, I'm really a little desparate at this point. Ole

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