April 2005 - Zope - Zope lists

[python script] problem with AUTHENTICATED_USER
by BonviciniJ＠keops.net 20 Apr '05

20 Apr '05

I have another problem (not in relation with AUTHENTICATED_USER): I would like to know if a special function exists to transform special char in html (like HTMLentities in PHP or escape in javascript)

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Tips in memory leaks esp with Catalogs?
by Dylan Jay 20 Apr '05

20 Apr '05

Hi Everyone, I have an application that gains a large memory footprint very quickly, in casual testing 100M in an hour or so. I have a largeish ZCatalog with extra PathIndexes, using Plone, Archetypes and various other custom code. Using LeakFinder I get lots of BTree stuff from ZCatalog queries. It looks like it's being created legitimately but what's keeping the references to them and how to go about finding out? In the java world I would use a memory profiler to follow the reference chain till it went where it shouldn't. Is there such a thing for python? If not how does one go about working out whats keeping the memory? BTrees.IOBTree.IOBucket 18479 4476 BTrees.OOBTree.OOBucket 9587 1992 BTrees.IIBTree.IISet 5273 1172 DateTime.DateTime.DateTime 3725 424 Acquisition.ImplicitAcquirerWrapper 1231 218 Products.PlacelessTranslationService.GettextMessageCatalog.GettextMessageCat alog 641 212 AccessControl.User.User 276 196 Dylan Jay Web Builder dylan(a)pretaweb.com --- www.pretaweb.com - Reliable & responsive CMS website development www.meetmemap.com - makes giving directions easy www.eatmanifesto.com - Traditional Sustainable and Delectable Ph:+61(0)423198306 ~ Y!+Skype:dylan_jay ~ ICQ:520341 ~ SIP:djay@babble.net

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Zope on cdrom
by Nicolas Perrier - Zindep 20 Apr '05

20 Apr '05

Hi, I would like to run zope on cdrom but it doesn't work. I used the handbook on the following site: http://georget.sebastien.free.fr/files/zope/zope-on-cdrom.en.html On the HDD, it goes, but as soon as I put it on cdrom, it does not function any more. I use a mandrake 10, python 2.3.4 and zope 2.7.3 I have the following error: /mnt/cdrom/python/lib/python2.3/fcntl.py:7: DeprecationWarning: the FCNTL module is deprecated; please use fcntl DeprecationWarning)esource File "/mnt/cdrom/zope/lib/python/Zope/Startup/__init__.py", line 33, in parse File "/tmp/python/l Traceback (most recent call last):y", line 107, in parse]$ File "/tmp/python/lib/python2.3/xml/sax/xmlreader.py", line 123, in parse File "/mnt/cdrom/zope/lib/python/Zope/Startup/run.py", line 49, in ?ader.py", line 300, in start_element ile "/tmp/zope/lib/python/ZConfi run()in startElement File "/tmp/zope/lib/python/ZConfig/loader.py", line 154, in schemaComponentSourcee "/mnt/cdrom/zope/lib/python/Zope/Startup/ File "/mnt/cdrom/zope/lib/python/Zope/Startup/run.py", line 18, in runich is backed by a opts = _setconfig()drom]$ File "/mnt/cdrom/zope/lib/python/ZServer/HTTPServ File "/mnt/cdrom/zope/lib/python/Zope/Startup/run.py", line 41, in _setconfig opts.realize(doc="Sorry, no option docs yet.") File "/mnt/cdrom/zope/lib/python/zdaemon/zdoptions.py", line 262, in realize self.load_schema() File "/mnt/cdrom/zope/lib/python/zdaemon/zdoptions.py", line 303, in load_schema self.schema = ZConfig.loadSchema(self.schemafile) File "/tmp/zope/lib/python/ZConfig/loader.py", line 37, in loadSchema File "/tmp/zope/lib/python/ZConfig/loader.py", line 71, in loadURL File "/tmp/zope/lib/python/ZConfig/loader.py", line 137, in loadResource File "/tmp/zope/lib/python/ZConfig/schema.py", line 43, in parseResource File "/mnt/cdrom/zope/lib/python/Zope/Startup/__init__.py", line 33, in parse check_python_version() File "/tmp/python/lib/python2.3/xml/sax/expatreader.py", line 107, in parse File "/tmp/python/lib/python2.3/xml/sax/xmlreader.py", line 123, in parse File "/tmp/python/lib/python2.3/xml/sax/expatreader.py", line 207, in feed File "/tmp/python/lib/python2.3/xml/sax/expatreader.py", line 300, in start_element File "/tmp/zope/lib/python/ZConfig/schema.py", line 119, in startElement File "/tmp/zope/lib/python/ZConfig/schema.py", line 306, in start_import File "/tmp/zope/lib/python/ZConfig/loader.py", line 154, in schemaComponentSource File "/mnt/cdrom/zope/lib/python/Zope/Startup/__init__.py", line 36, in ? # we log events to the root logger, which is backed by a File "/mnt/cdrom/zope/lib/python/ZServer/HTTPServer.py", line 45, in ? from HTTPResponse import make_response File "/mnt/cdrom/zope/lib/python/ZServer/HTTPResponse.py", line 25, in ? from PubCore.ZEvent import Wakeup File "/mnt/cdrom/zope/lib/python/ZServer/PubCore/ZEvent.py", line 24, in ? the_trigger=simple_trigger() File "/mnt/cdrom/zope/lib/python/ZServer/medusa/thread/select_trigger.py", line 50, in __init__ asyncore.file_dispatcher.__init__ (self, r) File "/mnt/cdrom/python/lib/python2.3/asyncore.py", line 543, in __init__ flags = fcntl.fcntl(fd, fcntl.F_GETFL, 0) AttributeError: 'module' object has no attribute 'fcntl' Somebody can it help me? Is there any other handbook? Thanks. Nip

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Re: [Zope] Problem with Zope Threads on Debain
by David 20 Apr '05

20 Apr '05

David wrote: >> I have installed the zope debian (sarge) package. The default number of >> threads is 4 but only one thread is running. >> I installed this package in several machines and I have this problem in >> everyone. > How are you deducing that only one thread is running? > Chris I do : ps -aux . There is one zope process (user : zope) running in every moment : zope 19004 0.3 11.0 171460 114380 ? S 09:58 0:16 /usr/bin/python2.3 /usr/lib/zope2.7/lib/python/Zope/Startup/run.py -C /var/lib/zope2.7/instance/ ... However, there are a lot of apache process (6) running. Do you know another way to obtain the number of zope threads running?

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Pass index in a TAL path expr
by Vangelis Mihalopoulos 20 Apr '05

20 Apr '05

Hello, if "data" is a tuple (or list), how can directly access it's contents using path expressions, like in: -- script "s": return context.t(data=("one", "two", "three")) -- template "t" <html><body> <span tal:replace="options/data/0"></span> </body></html> The above example give out a TypeError for the index... "options/data/0" is not correct. What should i set the path to?

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[ANN] Zope 2.7.6 beta 2 released
by Andreas Jung 20 Apr '05

20 Apr '05

Dear Zope Community, on behalf of Zope Corporation and all Zope 2 developers and contributors I am pleased to announce the release of Zope 2.7.6 beta 2 Zope 2.7.6 beta 2 can be downloaded from http://www.zope.org/Products/Zope/2.7.6b1 The release notes can be found at http://www.zope.org/Products/Zope/2.7.6b2/CHANGES.txt This release also includes the security hotfix from 2005-04-05. It is highly recommended to upgrade existing installations or to install at least the hotfix and wait until 2.7.6 final will be out (in about two weeks). This release also contains several fixes for running Zope on Windows. All Zope windows users are invited to test the improvements *now* and not to wait until the final release. TEST NOW and help that related bugs are fixed *FOR THE FINAL* release and *AFTER THE FINAL* release. For information on using Python 2.4 with Zope 2.8: see doc/INSTALL.txt Andreas Jung Zope 2 Release Manager

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ZPsycopgDA dropping connections?
by Richard Jones 20 Apr '05

20 Apr '05

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Has anyone else seen ZPsycopgDA just lose its connection? I've got two ZEO clients set up to use it, and every now and then one of them (the primary) just up and loses its connection. There doesn't appear to be any message in the log file *except* for the message saying that the connection's not active: 2005-04-20T14:35:46 INFO(0) ZEC:/var/cache/cgzope/zope-8000/cmain-main-1.zec flipping cache files. new current = 1 - ------ 2005-04-20T14:53:25 INFO(0) ZEC:/var/cache/cgzope/zope-8000/cmain-main-0.zec flipping cache files. new current = 0 - ------ 2005-04-20T14:58:11 ERROR(200) SiteError http://laurastein.cgpublisher.com/CGPublisher Traceback (most recent call last): File "/home/cgzope/prod/Zope/lib/python/ZPublisher/Publish.py", line 92, in publish File "/home/cgzope/prod/Zope/lib/python/ZPublisher/BaseRequest.py", line 259, in traverse File "/home/cgzope/prod/Zope/lib/python/ZPublisher/BeforeTraverse.py", line 104, in __call__ File "/home/cgzope/prod/Zope/lib/python/ZPublisher/BeforeTraverse.py", line 144, in __call__ File "/home/cgzope/prod/Products/CookieCrumbler/CookieCrumbler.py", line 217, in __call__ attempt = self.modifyRequest(req, resp) File "/home/cgzope/prod/Products/CGPublisher/SessionCookieCrumbler.py", line 55, in modifyRequest creds = req.SESSION.get(key,None) File "/home/cgzope/prod/Zope/lib/python/ZPublisher/HTTPRequest.py", line 1218, in __getattr__ File "/home/cgzope/prod/Zope/lib/python/ZPublisher/HTTPRequest.py", line 1178, in get File "/home/cgzope/prod/Products/ZSQLSessionDataManager/ZSQLSessionDataManager .py", line 100, in getSessionData return self._getSessionDataObject(key) File "/home/cgzope/prod/Products/ZSQLSessionDataManager/ZSQLSessionDataManager .py", line 233, in _getSessionDataObject c = self._getSessionDataConnection() File "/home/cgzope/prod/Products/ZSQLSessionDataManager/ZSQLSessionDataManager .py", line 250, in _getSessionDataConnection return self.restrictedTraverse(self.obpath)() File "/home/cgzope/prod/Zope/lib/python/Shared/DC/ZRDB/Connection.py", line 173, in __call__ BadRequest: The database connection is not connected - ------ (apologies for the wrapping, of course) Any ideas? Richard -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.4 (GNU/Linux) iD8DBQFCZedirGisBEHG6TARAo6WAJ98cBlOZqoZ62Amg0zreDkTPFiyAQCeJGla gmhpp4lXn2wjFb6PnPkF3cI= =8g/U -----END PGP SIGNATURE-----

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Multipart/alternative Emails
by Thomas Adams 20 Apr '05

20 Apr '05

Hello, I'm trying to perform a multipart/alternative email message with combination of sendmail-, mime- and boundary-tag. Here is the code: <dtml-sendmail mailhost="MailHost"> To: thomas.adams(a)info.de From: kontakt(a)info.de Subject: password <dtml-mime type="multipart/alternative" encode="quoted-printable"> <dtml-boundary type="text/plain" encode="quoted-printable"> ....plain text... <dtml-boundary type="text/html" encode="quoted-printable"> <html> ...... here the HTML-Code .... </html> </dtml-mime> </dtml-sendmail> But the resulting email is still of type multipart/mixed, what is wrong here? (I'm using Zope 2.7.3 with Python 2.3.4 on Win XP SP2) Thanks in advance Regards Thomas

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ZCatalog and custom Product
by Milos Prudek 20 Apr '05

20 Apr '05

Hi, I need to convert a ZClass cataloged in multiple ZCatalogs into a Product. I know how to create a Product. But I have trouble understanding how to create a proper ZCatalog and manage it in a Product. When I change my ZClass instance, it reindexes itself in multiple ZCatalogs. I have the following DTML method "edit" in my ZClass (stored in ZODB) that takes care of this: <dtml-call "manage_editCataloger('Catalog_A')"> <dtml-call reindex_object> <dtml-call "manage_editCataloger('Catalog_B')"> <dtml-call reindex_object> How should this be programmed in Products? - Should I first create a ZCatalog instance in ZODB, and then bind this instance to my Product? That would make my Product not self-contained. - or should the Product rather create ZCatalog instance during its initialization? That would mean that upon Zope restart, ZCatalog instance would be removed and re-created and all Product instances would have to be recataloged. In my new Product (that is to replace my ZClass), I put this line: from Products.ZCatalog.ZCatalog import ZCatalog and I added ZCatalog to the list of subclassed classes: class ArtBase(ZCatalog, ObjectManager, SimpleItem, PropertyManager, JMZPTMacros): but I have no idea what to do next. In this mailing list's archive, Chris Withers wrote that ZCatalog should be an attribute of a product's instance so that I can open the ZCatalog management interface by calling "my_prod_instance/catalog_name/manage". I understand that, but I have no idea how to achieve it. Should I add a line to my class __init__ ? Something like: def __init__(self,id,title=''): """Contructor method to initialize the properties of our class""" #Create and initilize the class attributes self.id=id self.title=title self.catalog=manage_addZCatalog(id="catalog", title="title") but the above looks fishy because I would have an isolated catalog for each new instance of my class... To support manage_editCataloger and reindex_object, do I need to import both ZCatalog from Products.ZCatalog and CatalogAware from Products.ZCatalog.CatalogAwareness ? -- Milos Prudek

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Memory management problems
by Peter Millar 20 Apr '05

20 Apr '05

I have a serious memory problem. And would like to hear from anyone who has large image files being served up to a large number of simultaneous user base. I am running plone 2.0, zope 2.7.3, python 2.3.3, on windows 2003 server with 1.5 GB RAM. I have a 1MB image. I have created a little script to copy and paste this image. To do it 50 times takes 6 minutes and uses up 300 MB of RAM. If I then view the folder that contains all the images and start viewing the zpt that serves a single image it takes 40 seconds to a minute 20 and chews up approx 2-5MB. If I then get a few other machines to request the same image at the same time, it takes 20seconds for the first machine, 40 seconds for the next machine and 1 min for the next machine and another 20 MB of ram has been chewed up. Each time I go to serve a page my CPU usage jumps to 50% for the minute or so. After doing this over and over for a few minutes sees my machine has no RAM left. The only way to recover is to restart zope. My question after all of this is how in the world can anyone seriously use plone/zope in a real world scenario with potentially millions of users accessing a site viewing content if you have to restart your zope service every minute. I have spent the past two days looking at all sorts of cacheing ideas, session ideas etc. Is there some magic that I need to apply for this to work like any number of web image viewers. Or is it a case of throwing 100GB of Ram at the machine. ____________________________________________ Peter Millar

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