June 2005 - Zope - Zope lists

RE: [Zope] Max Connections
by Pascal Peregrina 03 Jun '05

03 Jun '05

2 parameters in zope.conf : zserver-threads (main section) : the number of threads (i.e. incoming request) Zope will try to handle simultaneously But if you increase this value, you must also increase : pool-size (<zodb_db></zodb_db> section) : the connection pool size to the ZODB By default, zserver-threads is set to 4 and pool-size is set to 7 (as far as I could read in Zope code). So what I did is that I increased zserver-threads to 10 and pool-size to 15. It works fine for me. Pascal -----Message d'origine----- De : zope-bounces(a)zope.org [mailto:zope-bounces@zope.org]De la part de Nicholas Avenell Envoyé : vendredi 3 juin 2005 12:40 À : zope(a)zope.org Objet : [Zope] Max Connections Watching our Zope servers, they don't ever seem to be handling very many connections at a time. Where can I find out (and increase, probably) the Max number of connections Zope's serving? (This is Z2.6.4) _______________________________________________ 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 ) ********************************************************************** 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 **********************************************************************

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Max Connections
by Nicholas Avenell 03 Jun '05

03 Jun '05

Watching our Zope servers, they don't ever seem to be handling very many connections at a time. Where can I find out (and increase, probably) the Max number of connections Zope's serving? (This is Z2.6.4)

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RE: [Zope] Silly question
by Dan Pozmanter 02 Jun '05

02 Jun '05

The name could change easily enough. How about __bobo_always_allow__ Which can either be: None A List of traversable items A method that takes the path, and returns whether or not it is traversable. So for a path p: if p[0] == '_': if p_object.__bobo_always_allow__: if type(p_object.__bobo_always_allow__) is type([]): if p in p_object.__bobo_always_allow__: #allow else: #Do what is normally done for '_' bits. else: if p_object.__bobo_always_allow__(p): #allow else: #Do what is normally done for '_' bits. else: #Do what is normally done for '_' bits. Something vaguely like that. That way you could either specify the exact items that start with '_', or have a method determine it on the fly. This way you would not automatically make all attributes that start with an underscore accessible, and the developer could specify exceptions. -----Original Message----- From: Chris McDonough [mailto:chrism@plope.com] Sent: Thursday, June 02, 2005 4:15 PM To: Dan Pozmanter Cc: zope(a)zope.org Subject: Re: [Zope] Silly question The DWIM of not disallowing traversal of underscore names is useful (because it makes it easy to conventionally mark attrs as private) but it can definitely be a drag if you really do want to publish something that begins with an underscore; this happens a lot when you need to deal with allowing uploads of arbitrary filenames. It might be useful to add something like you propose, except I might take exception to the name "isTraversable" (everything is traversable, really); maybe just set a magic attr on the object like __allow_underscore_traversal__. However, adding such a feature would need to be done carefully. Much usage of the Zope security machinery utterly depends on not being able to traverse underscore names. - C On Thu, 2005-06-02 at 15:59 -0400, Dan Pozmanter wrote: > Wouldn't it be cool if instead of checking explicitly for a leading > '_' during traversal, you ran a method "isTraversable" (On SimpleItem > for instance), which by default just checks for a leading '_', but > could be overridden in a particular class? > > Dan > _______________________________________________ > 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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Silly question
by Dan Pozmanter 02 Jun '05

02 Jun '05

Wouldn't it be cool if instead of checking explicitly for a leading '_' during traversal, you ran a method "isTraversable" (On SimpleItem for instance), which by default just checks for a leading '_', but could be overridden in a particular class? Dan

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Property id clashes with object id?
by Rob Boyd 02 Jun '05

02 Jun '05

I just observed something which I really wouldn't have expected. If I set a property on an object, via a PropertySheet, I then cannot add an object of the same id at the same level (and vice-versa). Say I have a folder, to which I add a property named 'draft'. Then I try to add any object (Page Template, whatever) with an id of 'draft' inside the folder. This fails with OFS.ObjectManager.checkValidId complaining that the id is already in use. Is this how it's supposed to work? This is on Zope 2.7.3-0, and I just verified it also is the case on Zope 2.7.6 final. Thanks in advance, Rob __________________________________ Discover Yahoo! Get on-the-go sports scores, stock quotes, news and more. Check it out! http://discover.yahoo.com/mobile.html

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Creating a Product
by Varun Parange 02 Jun '05

02 Jun '05

hi, i have add a new directory in my "Products" directory.. however, when i try to add the __init__.py file , it giver me an error.. Error Type: BadRequest Error Value: The id "__init__" is invalid because it begins with an underscore. how do i add this file? regards, varun --------------------------------- Yahoo! Mail Stay connected, organized, and protected. Take the tour

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[ANN] TextIndexNG 3.0.2 released
by Andreas Jung 02 Jun '05

02 Jun '05

F I am pleased to announce the release of TextIndexNG V 3.0.2. TextIndexNG V 3 is a complete new implementation based on Zope 3 technologies and can be used both in Zope 2.8 or 2.7 (with Five) or in Zope 3. What's new? - multi-field indexing and query support - multi-lingual support - configurable converters (through ZCML) - new indexing API (allowing you to hook your custom content types with TextIndexNG through Zope 3 adapters). Changes since V 3.0.2: - multi-field query support added: the query parser now accepts queries where you can search within multiple fields using a single query e.g. 'title::phrase(The Zope Book) and author::or(michel amos)' which searches for all documents with the exact title 'The Zope Book' and where the author field contains 'michel' or 'amos'. See doc/README.txt for details on the query syntax. - new extension module 'txngstemmer' providing language dependant stemmer support based on the Snowball stemmer library. This is a reimplementation of the older PyStemmer extension module based on the new Snowball reimplementation allowing a much cleaner and easier integration. Outstanding compilation problems and problems with unicode should be finally resolved. Stemmer support will be added to TextIndexNG in a later version. Requirements: - Zope 2.8 or Zope 2.7 (+ Five) or Zope 3 (Zope 3 has nothing like catalogs yet) TextIndexNG V3 will *not* run with bare Zope 2.7 installations without Five (and this will not be changed in the future). Download: http://sf.net/projects/textindexng For installation and documentation issues refer to doc/README.txt from the archive. It's basically the same procedure as with former versions except you *need* to recompile the extension modules. Windows binaries of the required extension modules are currently not available (any volunteers?). TextIndexNG V 3 is published under the GPL. Andreas Jung ----------------------------------------------------------------------- - Andreas Jung ZOPYX Software Development and Consulting - - E-mail: info(a)zopyx.com Web: www.zopyx.com - -----------------------------------------------------------------------

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DTML in Zope 2 vs Zope 3
by David H 01 Jun '05

01 Jun '05

Hi, I understand that DTML will be in Zope 3. My question is, do "namespaces" and "context" also migrate to Zope 3? If not, could break existing code? David

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Visual Reporting tool.
by Fernando Lujan 01 Jun '05

01 Jun '05

Hi, I want to know, if is there a visual reporting tool? Like JasperReport, for example, wich works with reportlab's libraries and generate a .py. Thanks and regards, Fernando Lujan

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Problem with ZPsyopg
by David 01 Jun '05

01 Jun '05

Zope 2.7 / ZPsyopgDA / PostgreSQL7.3.4 My problem is that we're running a lot of little websites on a single server. Each site has its own zope/zpsyopg instance and its own postgresql database. But all databases are served by a single postmaster (postgresql instance). The issue arising is that I'm reaching max_connections (and as this ties into memory, there are limits to how high I can set this without affecting the performance of the machine), while most connections sit around being idle most of the time. I had a look at pgpool, but if I understand it correctly, it won't help (or will any other pooling solution), as it requires as many connections to the backend, as it's serving to clients. (Or did I get this wrong?) I do understand how I can reduce the number of threads within Zope to reduce the number of connections, but that only goes so far. Is there a way how I can configure my system, so that idle connections expire when not used for a certain time? Or is there another solution to the problem? Thanks DR

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