February 2007 - Zope

Zope + Oracle + Cron
by David VanKirk 05 Feb '07

05 Feb '07

We have zope installation that uses an Oracle backend to store data on. We also have the system setup to do a backup of the database and Zope Installation everyday. Everything runs smoothly until it comes time to start Zope back up. For some reason whenever the script tries to start Zope back up, it comes up but with a broken ZOracleDA product. It complains about not being able to find the library file called libclntsh.so.9.0. If I try to start Zope myself from command line right after the script is done running (actually stop it then start it again) it works and connects to Oracle fine. I've tried using "nice" to up the priority level but it doesn't seem to work. I also thought that maybe I wasn't giving oracle enough time to start up so I've tried adding sleep commands to the script, again, with no luck. If anyone has any experience in this field or has any suggestions, please let me know. This is a quite annoying situation, as this server is quite important to the company and downtime is a bad thing. -David

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single sign-on
by John Fugazi 05 Feb '07

05 Feb '07

I have installed Plone with openSUSE 10.2 (working). I have also installed LDAPUserFolder and LDAPMultiPlugins (working). The default installation of Plone is located in "/var/opt/zope/default". I have loaded mod_proxy, mod_proxy_http, mod_rewrite and mod_headers. I have also compiled and load mod_ntlml. I tested mod_ntlm on just an ordinary directory that contained an "index.html" and it worked fine. Mod_ntlm asked for username and password, which authenticated. I set internet explorer to "automatic logon with current username and password" and i was able to get to the web page without typing a username and password. This is my conf, but this does not work. <VirtualHost 192.168.200.20:80> ServerName openSUSE ServerSignature On RewriteEngine On <Location "/var/opt/zope/default"> AuthName "Active Directory Domain" AuthType NTLM NTLMAuth on NTLMAuthoritative on NTLMDomain domain NTLMServer ads require valid-user RequestHeader set REMOTE_USER %{REMOTE_USER}e </ Location> RewriteRule ^/(.*) \ http://localhost:8080/VirtualHostBase/http/%{HTTP_HOST}:80/VirtualHostRoot/… \ [L,P,E= REMOTE_USER:%{LA-U:REMOTE_USER}] </VirtualHost> Any suggestions???? _________________________________________________________________ >From predictions to trailers, check out the MSN Entertainment Guide to the Academy Awards® http://movies.msn.com/movies/oscars2007/?icid=ncoscartagline1

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winlock.error: 33 -- Zope2.app()
by mycrazylists mycrazylists 05 Feb '07

05 Feb '07

Hi All, I am getting winlock.error :33 when trying to execute a function called connectZope (mentioned below). If i execute the same function when zope is not running, it works fine. I think this is bcoz of zope acquiring lock on data.fs when its running. Am i missing anything here or Is there any other way i can accomplish the same ( i wolud like to execute a python script (zope object)) from a background process instead of calling the same on the Web). Any help would be appreciated. def connectZope(): from Zope2.Startup.run import configure configure('C:\Zope-Instance\etc\zope.conf') import Zope2 app = Zope2.app() return app app = connectZope() app.myscript() Traceback (most recent call last): File "test.py", line 8, in ? app = connectZope() File "test.py", line 5, in connectZope app = Zope2.app() File "C:\Zope-2.8.4-final\lib\python\Zope2\__init__.py", line 51, in app startup() File "C:\Zope-2.8.4-final\lib\python\Zope2\__init__.py", line 47, in startup _startup() File "C:\Zope-2.8.4-final\lib\python\Zope2\App\startup.py", line 56, in startu p DB = configuration.dbtab.getDatabase('/', is_root=1) File "C:\Zope-2.8.4-final\lib\python\DBTab\DBTab.py", line 96, in getDatabase db = self._createDatabase(name, is_root) File "C:\Zope-2.8.4-final\lib\python\DBTab\DBTab.py", line 113, in _createData base db = factory.open() File "C:\Zope-2.8.4-final\lib\python\Zope2\Startup\datatypes.py", line 163, in open DB = self.createDB() File "C:\Zope-2.8.4-final\lib\python\Zope2\Startup\datatypes.py", line 160, in createDB return ZODBDatabase.open(self) File "C:\Zope-2.8.4-final\lib\python\ZODB\config.py", line 97, in open storage = section.storage.open() File "C:\Zope-2.8.4-final\lib\python\ZODB\config.py", line 133, in open quota=self.config.quota) File "C:\Zope-2.8.4-final\lib\python\ZODB\FileStorage\FileStorage.py", line 11 2, in __init__ self._lock_file = LockFile(file_name + '.lock') File "C:\Zope-2.8.4-final\lib\python\ZODB\lock_file.py", line 63, in __init__ lock_file(self._fp) File "C:\Zope-2.8.4-final\lib\python\ZODB\lock_file.py", line 33, in lock_file _LockFile(file.fileno(), 0, 0, 1, 0) winlock.error: 33 --------------------------------- Expecting? Get great news right away with email Auto-Check. Try the Yahoo! Mail Beta.

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Florent Guillaume's database Conflict Error on session objects patch not working ?
by yacine chaouche 04 Feb '07

04 Feb '07

Hi all, As discussed here : http://mail.zope.org/pipermail/zope/2007-January/170151.html and continued here : http://mail.zope.org/pipermail/zope/2007-January/170156.html I am experiencing issues regarding a database ConflictError on session objects. I use zope 2.9.0 python 2.4.2, and the code of the MultiDB support has been patched (as suggested by Florent Guillaume) http://mail.zope.org/pipermail/zodb-dev/2006-January/009737.html My main concern is to debug my application where, on every couple of requests coming from two different browsers at the same time (before the first request is , one of them wins and the other always fails and raises a conflict error. It is not a ReadConflictError, nor a WriteConflictError. It is a "ConflictError: database conflict error". I am aware that conflicts occure up to 20% of the time, but in my case it is almost 100% in this specific situation ! If I do not use the session object in my code, I have no errors at all and everything just goes fine. Any idea on how to debug this ? Florent, maybe ? someone help me ! I am stuck on this for 2 weeks now. NOTE : I do not use Zeo, nor frames. Thanks, Y.Chaouche

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zope, webdav, ical, vcalendar, etc.
by Erik Myllymaki 03 Feb '07

03 Feb '07

I am trying to dynamically create iCalendar or vCalendar files. I can do this with a Zope Page Template, naming it myCalendar.ics. When myCalendar.ics is accessed through a web browser, iCal pops up and asks what I want to do with the calendar info, etc. and all is well. But what I would like to do is use iCal or thunderbird( lightening ) to subscribe to the calendar so that updates are handled automatically. For iCal to do this, it wants to access the ics file via webdav. So I attempt to connect to zope via its webdav port and request the sale zpt, but of course it sends it as its source, not as the rendered calendar. If i take out all the TAL and just have a static vCalendar or iCalendar file then this works via webdav but my whole reason for doing this is so that I can populate the calendar with events form a RDBMS when the myCalendar.ics template is called. Your ideas appreciated.

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Limiting access to a Zope Site
by hpinson＠indepthl.com 02 Feb '07

02 Feb '07

Hi. I'm looking for several differnt approaches to probably a fairly simple problem. I have a Zope site running behind apache rewrite rules. www.mysite.org That site needs to be publically accessable. A subdomain site (for development): dev.mysite.org needs to be accessable only to a team of developers, and by no one else. The developers may or may not have static IPs and move around quite a bit, so limiting access to a set of IPs is not a good option. Another possibility is making the whole (plone site) private, but that changes some key behaviors that we are working on. I'm looking for alternate approaches to making the subdomain only accessable to the developer team. Any suggestions? -- Harlow Pinson Indepth Learning Email: hpinson(a)indepthl.com Phone: 505 994-2135 Fax: 505 994-3603

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session-timeout-minutes value in runtime Zope
by Peter Bengtsson 02 Feb '07

02 Feb '07

This might be an FAQ but I wasn't able to find it when searching. How do I get access to the value of 'session-timeout-minutes' coming from etc/zope.conf in runtime Zope? My app knows when people log in. I want the app to say "You'll be securely logged in for another 25 minutes unless you log out or log in again". -- Peter Bengtsson, work www.fry-it.com home www.peterbe.com hobby www.issuetrackerproduct.com

5 6

Cyclic garbage collection todo 2.9.3 onwards, fixed?
by Jonathan Bowlas 02 Feb '07

02 Feb '07

Hi All, Could anyone advise whether this has been fixed in any of the Zope versions beyond v2.9.3: To-do: * Add cyclic-garbage collection support to C extension classes, especially to acquisition wrappers. I don't see any mention of it at all after Zope 2.9.4 in the changes.txt. Cheers Jon

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CMF 16.3 released
by Jens Vagelpohl 02 Feb '07

02 Feb '07

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 The CMF developer community is hereby announcing the release of CMF version 1.6.3. What is the CMF? The Zope Content Management Framework provides a set of services and content objects useful for building highly dynamic, content-oriented portal sites. The CMF provides the foundation for popular software packages such as Plone. It is intended to be easily customizable, in terms of both the types of content used and the policies and services it provides. Where do I get it? For release files, change logs, installation instructions and more please visit http://www.zope.org/Products/CMF/CMF-1.6.3. Roadmap and release information can be found at http://www.zope.org/Products/CMF/docs/roadmap. The CMF mailing list can be reached at the zope-cmf(a)zope.org address, to sign up please visit http://mail.zope.org/mailman/listinfo/zope- cmf. Please file bug reports, feature requests or suggestions in the CMF bug collector at http://www.zope.org/Collectors/CMF . What has changed since the last release? There were no changes since CMF 1.6.3-beta. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.5 (Darwin) iD8DBQFFwzH2RAx5nvEhZLIRAoiFAJ461rFjVbL2C90Z2IKBaSJC2qG9XACfVYdl dA7Cr8p/mLrEL9b1N+vHdnA= =rtPg -----END PGP SIGNATURE-----

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A good time to set HTTP_ACCEPT_LANGUAGE
by Peter Bengtsson 01 Feb '07

01 Feb '07

My multilingo app now works with PlacelessTranslationService quite fine. If you change your browser setting with about:config you get the website in different languages. Neat! However, what if you're in an internet cafe in Kenya using a Zulu web browser and you want the pages to appear in English for example? One solution is to do this:: def __before_publishing_traverse__(self, object, REQUEST): lang = self.getUserCookieSettingLang(default='en') # 1. REQUEST.environ['HTTP_ACCEPT_LANGUAGE'] = lang # 1. Trust that this is my custom function for finding out # which language they really want to use when logged in. Problems with this approach: 1. It has to be done for every object I publish including images, css etc. 2. It feels slightly risky to change the REQUEST.environ object. Thoughts? -- Peter Bengtsson, work www.fry-it.com home www.peterbe.com hobby www.issuetrackerproduct.com

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