July 2002 - Zope - Zope lists

Scalability questions
by Phil Glaser 02 Jul '02

02 Jul '02

Hi, I am beginning the planning process for a Zope content management system that will support approximately 8,000 users. It is hard to predict the day-to-day use of the system, so I am trying to think ahead about scalability issues, and I have a number of questions. STATIC FILES One of the suggestions in the literature for improving performance is to allow Apache to serve static files. It would seem, however, that doing so completely takes away the meta data and permission management features of Zope. The LocalFS product, on the other hand, enables you to serve content from the file system and maintain meta data and apply user permissions from Zope. Is there any performance advantage with LocalFS, or is it basically the same as storing the content in Data.fs? DATA.FS LIMITATIONS If all the site's content is stored in Data.fs, I'm concerned that it would quickly grow to a size that would result in performance drag. Since I'm used to the RDBMS world, it seems odd to store all that data in one file. Is there a rule of thumb with respect to the amount of data you can put into Data.fs before performance becomes an issue? ALTERNATIVES TO DATA.FS It seems like the following alternatives to DATA.FS in its default configuration are available: ***Distribution*** This option would involve separating the server that stores the .FS file from the one(s) running Zope. You would do this with a ZeoStorageServer. A variation on this theme would be to use NAS/NFS to put the data on a separate server. ***ExternalMount*** Here you would use the ExternalMount product to store the data for selected portions of ZODB (e.g., for a specific Product) in a separate .FS file, either on the same or a separate server. Presumably this option would mitigate performance issues resulting purely from the size of Data.FS. ***BerkeleyDB or Oracle*** Oracle or Berkeley DB can be used as the storage mechanism instead of .FS. But in doing so do you loose Zope functionality? ***LocalFS*** LocalFS could be used to store large objects (like spreadsheets, PDF files, WAV files, etc.) on the file system and benefit from Zope's meta data and permissions system. In this case, it seems like the data Zope would store would be limited to the meta data and permissions data -- the entire object would not be duplicated in Data.FS. Like the ExternalMount solution, LocalFS would, it seems, alleviate performance issues related to the size of Data.fs. Have I exhausted the possibilities, or are there others? Other there other issues I should be thinking about? Thanks for your help! Regards, Philip Glaser Principal and Software Architect Sustainable Software Solutions, LLC StillSmallVoice(a)DirectvInternet.com www.sustainsoft.com 973-951-9522

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Re: [Zope] Curl like product for Zope ??
by H.de.Wit＠SFK.NL 02 Jul '02

02 Jul '02

Just from browsing www.curl.com it seems to me that Curl is a corporation that builds an ide named Surge lab. There is not a lot of information on their website, i really don't know what Curl is, in a technical sense. A little guessing; May be there is a language behind this, may be the name of the language is Curl and Curl could have possibilities in the scientific area, data visualisation. Just something like Python.. On the other hand everything seems to be build in Java, so probably there is no Curl language. It is not clear from this website what Curl is. As far as i know, there has been done a reasonable amount of work in Python in the scientific area and on visualisation. see http://www.scipy.org/ Not everything is ment for Zope though. Met vriendelijke groeten, Hans de Wit

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Product Troubles
by Jason Bush 01 Jul '02

01 Jul '02

I am new to the Python programming language, and am trying to get a new product to work. Alas I received this error that I cant seem to track down... Error Type: AttributeError Error Value: raw Traceback (innermost last): File /usr/scar/export1/dist/zope-new/lib/python/ZPublisher/Publish.py, line 150, in publish_module File /usr/scar/export1/dist/zope-new/lib/python/ZPublisher/Publish.py, line 114, in publish File /usr/scar/export1/dist/zope-new/lib/python/Zope/__init__.py, line 158, in zpublisher_exception_hook (Object: this_test) File /usr/scar/export1/dist/zope-new/lib/python/ZPublisher/Publish.py, line 98, in publish File /usr/scar/export1/dist/zope-new/lib/python/ZPublisher/mapply.py, line 88, in mapply (Object: index_html) File /usr/scar/export1/dist/zope-new/lib/python/ZPublisher/Publish.py, line 39, in call_object (Object: index_html) File /usr/scar/export1/dist/zope-new/lib/python/Products/NOLContent/NOLContent.py, line 71, in index_html (Object: this_test) File /usr/scar/export1/dist/zope-new/lib/python/DocumentTemplate/DT_String.py, line 411, in __call__ (Object: this_test) File /usr/scar/export1/dist/zope-new/lib/python/DocumentTemplate/DT_String.py, line 340, in cook (Object: this_test) File /usr/scar/export1/dist/zope-new/lib/python/DocumentTemplate/DT_String.py, line 332, in read (Object: this_test) File /usr/scar/export1/dist/zope-new/lib/python/DocumentTemplate/DT_String.py, line 328, in read_raw (Object: this_test) AttributeError: (see above) This class inherits from SimpleItem and DTMLMethod and the line of my code (line 71 of NOLContent.py) is: apply(HTML.__call__,(self, client, REQUEST), kw) I am trying to the the ZPublisher to render the content, (self.data of the object), if I just return the self.data it works by showing the HTML portions correctly, but the <DTML> is not rendered. Any help is appreciated. -- Jason Bush --- jason(a)nol.org Nebraska Online http://www.nol.org

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add multiple docs to DocLib
by Stephan Göldi 01 Jul '02

01 Jul '02

Are there any solutions around to load multiple files from a given directory to the DocumentLibrary product in one step?

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call zope methods from the operating system
by horst wald 01 Jul '02

01 Jul '02

Hi, I'm running Zope 2.5.0 on Suse 8.0 and I'm using os.system() and os.popen() a lot. Now I would like to to just the opposite thing: can I call Zope methods from the operating system (e.g. MySQLDA) without a loopback? Horst _________________________________________________________________ Mit MSN Fotos können Sie kinderleicht Ihre Fotos ausdrucken und Freunden zur Verfügung stellen: http://photos.msn.de

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External method UID
by Ruslan Spivak 01 Jul '02

01 Jul '02

Hello zope users, Zope2.5.0 under RH7.2 executes External Method with UID=99(nobody on my machine). How can I tell zope to execute it with UID=0 Thanks in advance Best regards, Ruslan mailto:alienoid@is.lg.ua

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Re: [Zope] Zope 2.4.0 --&gt; 2.6.x
by oliver.erlewein＠sqs.de 01 Jul '02

01 Jul '02

Hi all OK. I can't get the thing started with 2.6 at all. I get this errormessage over and over. 2002-07-01T09:27:55 INFO(0) ZODB Mounted database '11090112_1025508439.413717' at /temp_folder /lib/python/SearchIndex/__init__.py:19: DeprecationWarning: The usage of the SearchIndex package is deprecated since Zope 2.4. This package is only kept for backwards compatibility for a while and will go away in a future release. Please use instead the re-factored modules in Products/PluginIndexes. warnings.warn("The usage of the SearchIndex package is deprecated since \ /portal/prog/z3/lib/python/ts_regex.py:15: DeprecationWarning: the regex module is deprecated; please use the re module import regex, regsub #, Sync /usr/local/lib/python2.1/regsub.py:15: DeprecationWarning: the regsub module is deprecated; please use re.sub() DeprecationWarning) What am I doing wrong? Or what can I do to circumvent that? Thanx Oliver

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RE: [Zope] Using zope as something more than just dynamic webpage s
by alwyn＠smart.com.ph 01 Jul '02

01 Jul '02

Hi, Is it then possible for example to have pieces of Python code start up when zope start up that will be persistent and executing for as long as zope runs? This code might be consuming data off a queue that is also persistent, processing the data and maybe publishing it to some other data structure to be processed by some other object? Or maybe have a persistent socket connection to some external system, the state of which is managed by another object? Regards, Alwyn -----Original Message----- From: Chris McDonough [mailto:chrism@zope.com] Sent: Friday, June 28, 2002 8:48 PM To: alwyn(a)smart.com.ph; zope(a)zope.org Subject: Re: [Zope] Using zope as something more than just dynamic webpages Zope is an application server. It's reasonably well-suited for this purpose. ----- Original Message ----- From: <alwyn(a)smart.com.ph> To: <zope(a)zope.org> Sent: Friday, June 28, 2002 3:56 AM Subject: [Zope] Using zope as something more than just dynamic webpages > Hi, > > How suited is Zope as an application server for tasks you would do in JBoss > if you were > using Java? > > I'm thinking e.g. like a message routing engine having persistent > connections to different > external systems, routing objects that know their state and routed by Zope > according to the > state. > > Regards, > Alwyn > > --- > Outgoing mail is certified Virus Free. > Checked by AVG anti-virus system (http://www.grisoft.com) > Version: 6.0.371 / Virus Database: 206 - Release Date: 6/13/2002 > > > > > ______________________________________ > The information transmitted through this mail is intended solely for the > addressee and may be legally privileged. Any disclosure, copying, > dissemination or any action taken or omitted, to be taken in reliance on it, > by persons or entities other than the intended recipient is prohibited. > Smart Communications, Inc. > http://www.smart.com.ph > > > > > _______________________________________________ > 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 ) > --- Incoming mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com) Version: 6.0.371 / Virus Database: 206 - Release Date: 6/13/2002 --- Outgoing mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com) Version: 6.0.371 / Virus Database: 206 - Release Date: 6/13/2002 ______________________________________ The information transmitted through this mail is intended solely for the addressee and may be legally privileged. Any disclosure, copying, dissemination or any action taken or omitted, to be taken in reliance on it, by persons or entities other than the intended recipient is prohibited. Smart Communications, Inc. http://www.smart.com.ph

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Copied objects using WebDAV turn into file objects
by Joe Block 01 Jul '02

01 Jul '02

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 I'm a Zope newbie. I'm running Zope 2.5.1 (on a MacOS X server running 10.1.5 if it matters). I can connect to Zope without a problem and edit existing files using vim, but if I try to copy a file so that I can test changes to it without affecting the original object, the copy turns into a file object, and I don't see a way from the Management interface to turn it back into a DTML method. Anyway, my question is, is there a way to preserve the type of a copied object, or do I need to keep a management window open and do all cloning from there? Thanks, jpb - -- Joe Block <jpb(a)ApesSeekingKnowledge.net> A crash reduces your expensive computer to a simple stone. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.0.7 (Darwin) iD8DBQE9H52XyEXo8W2M9hsRAr3hAJsGm34GJmw0bhTG0McbYk3hMZYM9gCgvrSX QuIhHhXoNQOcdjWSkUU21h8= =3EPw -----END PGP SIGNATURE-----

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Curl like product for Zope ??
by bryan_webb＠ftsi.fujitsu.com 01 Jul '02

01 Jul '02

Hi, Just been brushing up on Curl(www.curl.com), and seems like something like Curl, but done with zope would be a good thing. Does anyone know if something like this is planned? Thanks bryan webb

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