January 2001 - Zope - Zope lists

ANN: Core Session Tracking 0.7
by Chris McDonough 30 Jan '01

30 Jan '01

A new release of the "CoreSessionTracking" product is out. The product allows you to associate state with anonymous visitors between requests. The latest version (0.7) fixes a fairly serious kid-clicking-related bug found by Randall Kern that effects RAM-based ("internal") session data containers. If you need to upgrade from 0.6, all that is required is to untar/ungzip this release on top of the 0.6 release files. Then you must restart. You can find the product at http://www.zope.org/Members/mcdonc/Products/CoreSessionTracking/index_html - C

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Re: [Zope] CoreSessionTracking and ConflictError
by Chris McDonough 30 Jan '01

30 Jan '01

OK, I think I've reproduced this. But I haven't fixed it. :-( As soon as I do, I'll let you know... ----- Original Message ----- From: "Randall F. Kern" <randy(a)spoke.net> To: "Chris McDonough" <chrism(a)digicool.com> Sent: Monday, January 29, 2001 5:28 PM Subject: RE: [Zope] CoreSessionTracking and ConflictError Yes, I mean I'm getting a conflict error on every access (for an existing session), after a conflict. I've read the docs, they are the best docs I've seen for anything Zope, but they don't mention a reason why this might happen. Any ideas? -Randy > -----Original Message----- > From: Chris McDonough [mailto:chrism@digicool.com] > Sent: Monday, January 29, 2001 1:47 PM > To: Chris McDonough; Randall F. Kern; zope(a)zope.org > Subject: Re: [Zope] CoreSessionTracking and ConflictError > > > Oh, wait, I just reread that. I only skimmed it first, > sorry. Are you > saying that you get a conflict error on every access to the > session mgr > after you've had one conflict error? I haven't experienced > any failure mode > like this. Any concurrent write access to the session > container has the > possibility of causing a conflict. getSessionData has the > possibility of > causing a conflict if a session key isn't found in the > request because it > creates a new session data object (e.g. if you run Apache's "ab" in > concurrent mode against a method which calls getSessionData > without giving a > session key as part of the URL, you will get ConflictErrors > because the > container will be modified as new session objects are created). > > ----- Original Message ----- > From: "Chris McDonough" <chrism(a)digicool.com> > To: "Randall F. Kern" <randy(a)spoke.net>; <zope(a)zope.org> > Sent: Monday, January 29, 2001 4:38 PM > Subject: Re: [Zope] CoreSessionTracking and ConflictError > > > > There is info about this in the docs. > > > > ----- Original Message ----- > > From: "Randall F. Kern" <randy(a)spoke.net> > > To: <zope(a)zope.org> > > Sent: Monday, January 29, 2001 4:12 PM > > Subject: [Zope] CoreSessionTracking and ConflictError > > > > > > > I've been porting my product from my own private session > manager to use > > > CoreSessionTracking 0.6, and am having a problem with > lots of conflict > > > errors. > > > > > > I've got a session_id_mgr in the root, configured as per > defaults, and a > > > session_data_mgr also in the root, using the RAM base container. > > > > > > Then I have a simple DTML method: > > > > > > <dtml-let session="session_data_mgr.getSessionData()"> > > > <dtml-let title=title> > > > <dtml-call expr="session.set('title', title)"> > > > <dtml-in expr="_.range(100)"> > > > <dtml-in expr="_.range(100)"> > > > </dtml-in> > > > </dtml-in> > > > </dtml-let> > > > </dtml-let> > > > Test > > > > > > > > > > > > If I goto this URL in a browser, it works fine, > displaying "Test", with > > > no ConflictError in my debug listing. Then I quickly > press Refresh > > > twice in my browser. This results in the page "Test", and a > > > ConflictError in my log (as I expected). > > > > > > After that, any request that uses the session data (even > without a set) > > > results in a ConflictError: > > > > > > <dtml-let session="session_data_mgr.getSessionData()"> > > > Title: <dtml-var expr="session.get('title')"> > > > </dtml-let> > > > > > > > > > Any ideas why this is happening? > > > -Randy > > > > > > _______________________________________________ > > > Zope maillist - Zope(a)zope.org > > > http://lists.zope.org/mailman/listinfo/zope > > > ** No cross posts or HTML encoding! ** > > > (Related lists - > > > http://lists.zope.org/mailman/listinfo/zope-announce > > > http://lists.zope.org/mailman/listinfo/zope-dev ) > > > > > > > > > > > > _______________________________________________ > > Zope maillist - Zope(a)zope.org > > http://lists.zope.org/mailman/listinfo/zope > > ** No cross posts or HTML encoding! ** > > (Related lists - > > http://lists.zope.org/mailman/listinfo/zope-announce > > http://lists.zope.org/mailman/listinfo/zope-dev ) > > > > > >

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porting from Python Methods to PythonScripts in 2.3.0; LoginManager too
by Fred Yankowski 30 Jan '01

30 Jan '01

I just installed Zope 2.3.0 and I'm planning how to port my sites from 2.2.5. It looks like I'll have to: + Copy over the Products I installed, _except_ + Don't copy over SiteAccess and PythonMethods. + Delete the PythonMethods product from the Control_Panel/Products management folder. Will I have to manually convert each existing Python Method to a PythonScript, or are they essentially the same type? I haven't been able to test what happens yet, because all my existing Python Methods relate to LoginManager and I haven't been able to get the LoginManager product to initialize correctly in 2.3.0. I followed the first two steps above and copied over my data.fs. It comes up cleanly except for an exception while loading the LoginManager and some ZClass problems for ZClasses that depend on LoginManger. The exception is this: ------ 2001-01-29T16:57:02 ERROR(200) Zope Couldn't import Products.LoginManager Traceback (innermost last): File E:\PROGRA~1\Zope230\lib\python\OFS\Application.py, line 530, in import_products (Object: string) File E:\PROGRA~1\Zope225\lib\python\Products\LoginManager\__init__.py, line 1, in ? File E:\PROGRA~1\Zope225\lib\python\Products\LoginManager\LoginManager.py, line 121, in ? InstallError: No access file found at E:\Program Files\Zope230 - see INSTALL.txt ------ Can someone help me understand this? The two INSTALL.txt files under Zope230 offer no clues. It's odd that the exception stack shows it executing code from my older Zope225 installation. How the heck can that happen? Is that some bug in Python? There's nothing in my environment that mentions Zope225, and I dumped sys.path late in z2.py and it looks fine. I tried deleting the LoginManager product from the management interface and restarting, but the same exception occurs. I do notice that, unlike prior Zope installs, there is no 'access' file in the Zope root. Oops, I just saw another message about LoginManager not yet working in Zope 2.3. If that's so, it's a show-stopper for me. -- Fred Yankowski fred(a)OntoSys.com tel: +1.630.879.1312 Principal Consultant www.OntoSys.com fax: +1.630.879.1370 OntoSys, Inc 38W242 Deerpath Rd, Batavia, IL 60510, USA

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DTML current namespace
by kosh 30 Jan '01

30 Jan '01

How do you print out the current namespace you have access to in DTML? I am trying to track down what I think is a namespace problem and I think this would help solve the problem. Thanks

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Re: [Zope] 2.3 PythonScripts problem...
by Dieter Maurer 30 Jan '01

30 Jan '01

Curtis Maloney writes: > I have just made a nice fresh Zope 2.3 install, and am having an odd problem > with PythonScripts. > > I add one from the management screen, enter the name, "add and edit", enter > the code, the hit "save". Which dumps me to my index_html. Looks, as if you do no longer have the permission to use any management action. Unfortunately, I can not tell you why. Dieter

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LocalFS on 2.3.0
by Tim Cook 30 Jan '01

30 Jan '01

I "thought" LocalFS worked. But now when I import something with a LocalFS defined or attempt to create a new one here's the traceback on: Zope Version Zope 2.3.0 (binary release, python 1.5.2, linux2-x86) Python Version 1.5.2 (#10, Dec 6 1999, 12:16:27) [GCC 2.7.2.3] System Platform linux2 Error Type: AttributeError Error Value: _local_path Traceback (innermost last): File /usr/local/zope/2.3/lib/python/ZPublisher/Publish.py, line 222, in publish_module File /usr/local/zope/2.3/lib/python/ZPublisher/Publish.py, line 187, in publish File /usr/local/zope/2.3/lib/python/Zope/__init__.py, line 221, in zpublisher_exception_hook (Object: Traversable) File /usr/local/zope/2.3/lib/python/ZPublisher/Publish.py, line 171, in publish File /usr/local/zope/2.3/lib/python/ZPublisher/mapply.py, line 160, in mapply (Object: manage_main) File /usr/local/zope/2.3/lib/python/ZPublisher/Publish.py, line 112, in call_object (Object: manage_main) File /usr/local/zope/2.3/lib/python/Shared/DC/Scripts/Bindings.py, line 324, in __call__ (Object: manage_main) File /usr/local/zope/2.3/lib/python/Shared/DC/Scripts/Bindings.py, line 353, in _bindAndExec (Object: manage_main) File /usr/local/zope/2.3/lib/python/App/special_dtml.py, line 236, in _exec (Object: manage_main) File /usr/local/zope/2.3/lib/python/DocumentTemplate/DT_In.py, line 711, in renderwob (Object: objectItems) File /usr/local/zope/2.3/lib/python/DocumentTemplate/DT_With.py, line 146, in render (Object: sequence-key) File /usr/local/zope/2.3/lib/python/DocumentTemplate/DT_Var.py, line 271, in render (Object: bobobase_modification_time) File /usr/local/zope/2.3/lib/python/Products/LocalFS/LocalFS.py, line 979, in bobobase_modification_time (Object: myhomedir) AttributeError: (see above) -- Tim Cook, President -- Free Practice Management,Inc. | http://www.FreePM.com Office: (901) 884-4126 "Liberty has never come from the government." - Woodrow Wilson

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More ZClass questions: How to get a complete property list?
by Ernesto Revilla 29 Jan '01

29 Jan '01

Hi there, I want to have a method which returns a list of all properties of an object. The problem: when I write a Method (DTML or Python) I always get the properties of the container of the method, but not the ones of the object I applied the method. I used propertyMap, propertyIds and propertyItems. Example: Say xxx is an instance of a ZClass and resides in the root directory. http://localhost:8080/xxx/propertyMap will return a map of all properties of the root folder not of the xxx object. Say you define a method yyy which access concrete properties of the object with dtml-var, say ''who" and "when", then it will access these properties if they exist and fail if one of these doesn't. Ok. I found it, I have to access each propertysheet, but if I try something like <dtml-in "propertysheets"> <dtml-var propertyMap> </dtml-in> the login window with username/password is presented, but whatever I type I get an authorization error, so I think there is a private properysheet, isn't it? So how can I get a list of all properties defined in an object? I'll answer the question myself, but I think it is a bit complex. The philosophy is to write nearly everything in Python???? External (unrestricted) Pyhton script (like id=getprops, module=getprops, function=getprops) : def getprops(self): x=[] for y in self.propertysheets: for z in y.propertyItems(): x.append(z) return x Now a DTML method for displaying this (e.g. as printproperties): <dtml-var standard_html_header> <h2>Properties of <dtml-var title_or_id></h2> <p> <ul> <dtml-in getprops> <li><dtml-var sequence-key>: <dtml-var sequence-item> </dtml-in> </ul> regards, Erny

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Re: [Zope] Is Zserver "lazy" at rendering images?
by Dieter Maurer 29 Jan '01

29 Jan '01

Ausum writes: > While rendering a page having several image icons, not all of them renders > when a normal page view, while some of them are really slow at rendering. I've > been trying with a not too heavy page, without any dtml tag, and it always > happen the same. If I reload the page the problem will always be there, and this > time there may be other images wich don't render. The browser's status bar gets > stuck at "downloading .....[some image]" sometimes, and for this case it just > doesn't matter whether the image is in gif or jpg format. > > Has anyone else seen this sort of Zserver image rendering "laziness", on windows > boxes? I saw something similar with Zope on Solaris 2.6 and Netscape on Linux. Unfortunately, I was unable to reproduce it at home (Zope and Netscape under Linux). Thus, I gave up to locate the problem. Dieter

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CoreSessionTracking and ConflictError
by Randall F. Kern 29 Jan '01

29 Jan '01

I've been porting my product from my own private session manager to use CoreSessionTracking 0.6, and am having a problem with lots of conflict errors. I've got a session_id_mgr in the root, configured as per defaults, and a session_data_mgr also in the root, using the RAM base container. Then I have a simple DTML method: <dtml-let session="session_data_mgr.getSessionData()"> <dtml-let title=title> <dtml-call expr="session.set('title', title)"> <dtml-in expr="_.range(100)"> <dtml-in expr="_.range(100)"> </dtml-in> </dtml-in> </dtml-let> </dtml-let> Test If I goto this URL in a browser, it works fine, displaying "Test", with no ConflictError in my debug listing. Then I quickly press Refresh twice in my browser. This results in the page "Test", and a ConflictError in my log (as I expected). After that, any request that uses the session data (even without a set) results in a ConflictError: <dtml-let session="session_data_mgr.getSessionData()"> Title: <dtml-var expr="session.get('title')"> </dtml-let> Any ideas why this is happening? -Randy

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Re: [Zope] porting from Python Methods to PythonScripts in2.3.0;LoginManager too
by Jim Washington 29 Jan '01

29 Jan '01

Hi, Fred I discovered another bug in it. Where it changes stuff with "self[", it changes it to "container.", which is wrong, but a simple edit. new code: import string ids = container.objectIds('Python Method') oldscriptsuffix='.old' #replace all self. with the following: #change to context if needed newself = 'container' #for future programmatic use just to be certain no extra dots if string.find(newself,'.') >= 0: newself = string.replace(newself,'.','') for method_id in ids: method_id = string.strip(method_id) #get the Method and its title method = container[method_id] title = method.title #FTPget does not require external method! thebody = method.manage_FTPget() #get the params eop = string.find(thebody,'</params>') params = thebody[8:eop] params = string.replace(params,' ','') params = string.replace(params,'self,','') params = string.rstrip(string.replace(params,'self','')) body = thebody[eop+10:] #get the body newbodylist = [] splitbody = string.split(body,'\n') #do imports as needed #bug: random will be imported if you use whrandom for animport in ['string','whrandom','random','math']: if string.find(body,animport+'.') >= 0: newbodylist.append('import ' + animport) for k in splitbody: #this would be a good place for re newstring = string.replace(k,'self.',newself + '.') #bug: might miss 'self [' wish re were available newstring = string.replace(newstring,'self[', newself + '[') newbodylist.append(string.rstrip(newstring)) body = string.join(newbodylist,'\n') # uncomment to see the raw data # print 'params = "%s"' % params # print 'body is:\n"%s"' % body #rename the old and create the new. don't do more than once. if method_id [-len(oldscriptsuffix):] <> oldscriptsuffix: container.manage_renameObject(method_id,method_id+oldscriptsuffix) container.manage_addProduct['PythonScripts'].manage_addPythonScript(method_id) newscript = container[method_id] newscript.ZPythonScript_setTitle(title) newscript.ZPythonScript_edit(params, body) print 'converted: \t%s' % method_id if len(printed) < 9: print "No methods to convert" return printed Thanks for trying it. Let me know any other bugs, and I may eventually publish a howto. -- Jim > > Jim, > > Thanks for the script. I plan to give it a try. >

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