February 2005 - Zope

kInterbaseDA multiple connection
by Konstantin E. Steuck 23 Feb '05

23 Feb '05

Hello list, this is my first post here. I'm running Zope connected to Firebird with kinterbasDA. DB admin has recently told me that there were two active connections to the base under Zope user while there's only one instance of database adapter. I've checked it by running netstat -a on Zope host, here's the output -- tcp 0 0 zope_host:41838 db_host:gds_db ESTABLISHED tcp 0 0 zope_host:41042 db_host:gds_db ESTABLISHED -- The second connections appears short time after Zope restarts, so either DA or kinterbase itself seems to lose active connection. What's more interesting is that number of connections doesn't grow anymore remaining at point of 2. Has anyone encountered similar problem? I'm using Zope 2.7.2, python 2.3.4 on debian kinterbasdb 3.1pre9 kinterbaseDA 2.0 Firebird 1.5 PS Sorry for my poor english :)

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RE: [Zope] Re: Zope and mod_python
by Pascal Peregrina 23 Feb '05

23 Feb '05

mmmm... I thought that thre was one cache per connection to Zeo ?? A standard Zope instance with Zeo has 4 connections to Zeo, and when you look at the cache status, it is different for each connection (different number of objects). So I am not sure that there is anything shared accross connections. If I am right, then it makes no real difference to have many Zope with one connection to Zeo vs. one Zope with many connections to Zeo. If I am wrong, then I agree, "it's a shame" :) Pascal -----Message d'origine----- De : Chris Withers [mailto:chris@simplistix.co.uk] Envoyé : jeudi 10 février 2005 11:36 À : Pascal Peregrina Cc : Tres Seaver; Zope Mailing List Objet : Re: [Zope] Re: Zope and mod_python Pascal Peregrina wrote: > I am not sure we can share anything between instances. I mean, each instance > runs in a completely separate process. That's a shame, 'cos ZEO client cache's can sometimes need ot be pretty huge, and, IIRC, in normal Zope, you only need one for all your threads.... Chris -- Simplistix - Content Management, Zope & Python Consulting - http://www.simplistix.co.uk ********************************************************************** 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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DeadlockDebugger 1.0
by Florent Guillaume 23 Feb '05

23 Feb '05

Debugging a running or deadlocked Zope http://www.zope.org/Members/nuxeo/Products/DeadlockDebugger This product adds a hook so that a deadlocked Zope process can be debugged, by dumping a traceback of all running python processes. The dump is sent to the event log (at the DEBUG level) and returned to the browser (even though the Zope is deadlocked and doesn't answer any other requests!). DeadlockDebugger can of course also be used to debug Zope in non-deadlock situations, when a Zope process is taking a long time and you wish to know what code is being executed. DeadlockDebugger requires the third party 'threadframe' python module, http://www.majid.info/mylos/stories/2004/06/10/threadframe.html Florent -- Florent Guillaume, Nuxeo (Paris, France) CTO, Director of R&D +33 1 40 33 71 59 http://nuxeo.com fg(a)nuxeo.com

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RE: [Zope] Zope and threads.
by Pascal Peregrina 23 Feb '05

23 Feb '05

I knew this was a basic python question :)) Thanks again. Pascal -----Message d'origine----- De : Chris McDonough [mailto:chrism@plope.com] Envoyé : mardi 22 février 2005 21:45 À : Pascal Peregrina Cc : ''zope(a)zope.org' ' Objet : RE: [Zope] Zope and threads. On Tue, 2005-02-22 at 15:22, Pascal Peregrina wrote: > Ok, so, this almost completely answers my question. > > Let me tell you more about what I am doing, because I agree that my initial > mail was not that clear. :) > > I am trying to implement a ZeroConf browser (http://www.zeroconf.org/) in > Zope to automatically get the network location of XML RPC services that my > Zope objects talk to. > > The ZMI part is easy. In my new product, I've got my object in the Control > Panel, and it is ready to display whatever data I want (for example the list > of discovered services). > > The ZeroConf implementation itself has already been made by someone else > (http://sourceforge.net/projects/pyzeroconf) > > So I am just trying to plug pieces together now :) > > >From my product, I need to start a thread that will run the ZeroConf code, > and ZeroConf data will then be accessible through a particular object of > this code (the "listener" to be exact, as they call it in pyzeronf). > > This thread should be started when Zope starts, so I guess I can put it in > the __init__.py of my product. > > I only got one issue : my product can be refreshed. > So how can I ensure that the ZeroConf stuff won't be re-initialized if I > refresh my product ? (ending with 2 threads, with one of the threads not > being used). I know this is more a python related question, but I haven't > found a precise answer on the net. I'm not sure of how the internals of refresh work (I dont use it) but I suspect that if you do something like: import sys if not getattr(sys, 'ZEROCONF_STARTED'): .. start the thread .. sys.ZEROCONF_STARTED = 1 It will not spawn another thread. "sys" is just an example here, any module namespace should work (even __builtins__ probably). ********************************************************************** 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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Re: [Zope] Case Insensitive Zope Authentication
by Chris Withers 23 Feb '05

23 Feb '05

Remy Pinsonnault wrote: > I installed successfully SimpleUserFolder and created the apropriate > methods (getusers, etc.) and the authentication is ok (i can enter in > my plone site as a manager). > > But it does not solve the uppercase problem... you know how? at the start of the add/edit user scripts, and at the start of the getUserDetails script, do the following: name = name.lower() if pasword is not None: password = password.lower() cheers, Chris -- Simplistix - Content Management, Zope & Python Consulting - http://www.simplistix.co.uk

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RE: [Zope] Zope and threads.
by Pascal Peregrina 23 Feb '05

23 Feb '05

Ok, so, this almost completely answers my question. Let me tell you more about what I am doing, because I agree that my initial mail was not that clear. :) I am trying to implement a ZeroConf browser (http://www.zeroconf.org/) in Zope to automatically get the network location of XML RPC services that my Zope objects talk to. The ZMI part is easy. In my new product, I've got my object in the Control Panel, and it is ready to display whatever data I want (for example the list of discovered services). The ZeroConf implementation itself has already been made by someone else (http://sourceforge.net/projects/pyzeroconf) So I am just trying to plug pieces together now :) >From my product, I need to start a thread that will run the ZeroConf code, and ZeroConf data will then be accessible through a particular object of this code (the "listener" to be exact, as they call it in pyzeronf). This thread should be started when Zope starts, so I guess I can put it in the __init__.py of my product. I only got one issue : my product can be refreshed. So how can I ensure that the ZeroConf stuff won't be re-initialized if I refresh my product ? (ending with 2 threads, with one of the threads not being used). I know this is more a python related question, but I haven't found a precise answer on the net. Thanks for your answers, and sorry that my first mail was unclear. Pascal -----Original Message----- From: Chris McDonough To: Pascal Peregrina Cc: 'zope(a)zope.org' Sent: 22/02/2005 19:51 Subject: Re: [Zope] Zope and threads. Hi Pascal, It seems like the only thing you need to do is to launch a thread using either the thread or threading module to do what you want if you're not going to access any persistent objects from the newly created thread. Accessing nonpersistent objects created by another thread from within Zope app code is not a problem. - C On Mon, 2005-02-21 at 11:25, Pascal Peregrina wrote: > Hi, > > I need to have some processing done in one thread, that will set some > attributes of a (non persistent) object. > This processing is completely independant from Zope objects. > > Zope objects (persistent or non-persistent) will only need to "read" > data from this object. > > What would be the best way to do this (specially how to initialize my > thread ?) > > Thanks > > Pascal > > ********************************************************************** > 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 > ********************************************************************** > > > ______________________________________________________________________ > _______________________________________________ > 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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Plone site has disappeared
by John Poltorak 23 Feb '05

23 Feb '05

I built a plone site a few weeks ago and haven't touched zope since. Now when I try loading the site it has disappeared. Is there any analysis I can do of Data.fs to see whether it is burried away somewhere? -- John

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Case Insensitive Zope Authentication
by Remy Pinsonnault 22 Feb '05

22 Feb '05

Hi, Does someone know how to allow zope authentication to be case insensitive? Thanks Remy

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Acquisition 101 Question
by Remy Pinsonnault 22 Feb '05

22 Feb '05

Let's say I have three dtml methods: /Common/Top /Common/StyleSheet /Hello/index_html >From the index_html file inside the Hello folder, I want to call the Top file so I do: <dtml-var "Common.Top()"> It is working well if the Top file does not include another document. If Top has something like <dtml-var StyleSheet>, it does not find the StyleSheet (except if i call it directly in the Common folder). Is it possible to do this? Thanks Remy

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help with error message
by Tuttle, Gene 22 Feb '05

22 Feb '05

Can some one help me with this error? Error Value: You are not allowed to access 'SequenceMatcher' in this context Does this say that I cannot use difflib in python script? here is the snippet of code: # find the record that matches the best s = difflib.SequenceMatcher(None, name_first, R['name_first']) v1 = round(s.ratio(), 3) I am trying to determine if a record in the database is close to the data submitted by the user. An example is the address 914 Lois lane and 914 Lois LN With SequenceMatcher this returns a 97% probability that these two are the same. Thanks Gene

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