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problem with apache virtualhost
by Alvaro Jesus Hernandez Arteaga 15 Nov '04

15 Nov '04

Hi * I setup a Zope with apache 2.0.48 on Mandrake 10.0 my virtualhost file on apache is <VirtualHost 10.0.0.5:80> ServerName reducnew.uc.edu.ve ProxyPass / http://10.0.0.5:9080/VirtualHostBase/http/reducnew.uc.edu.ve:80/reduc.uc.ed… ProxyPassReverse / http://150.0.0.5:9080/VirtualHostBase/http/reducnew.uc.edu.ve:80/reduc.uc.e… ErrorLog /reduc/www/log/reducnew-error.log TransferLog /reduc/www/log/reducnew-access.log ProxyVia on RewriteEngine on RewriteCond %{REQUEST_METHOD} ^(TRACE|TRACK) RewriteRule .* -[F] </VirtualHost> but I don't access my zope site in my log error have client denied by server configuration: proxy:http://10.0.0.5:9080/VirtualHostBase/http/reducnew.uc.edu.ve:80/reduc.uc.edu.ve/VirtualHostRoot/ Thank you in advance -- Alvaro Jesús Hernández Arteaga alhernan(a)uc.edu.ve RedUC - Universidad de Carabobo Valencia, Edo. Carabobo Venezuela

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AW: [Zope] Zope and IIS6.0 (Windows 2003 server)
by volker.wend＠efgbsh.de 15 Nov '04

15 Nov '04

Hi, http://freshlogic.net/ IIS2Zope works fine with IIS and Zope / Plone with VHM and is free. Regards, Volker -----Ursprüngliche Nachricht----- Von: zope-bounces(a)zope.org [mailto:zope-bounces@zope.org] Im Auftrag von Tino Wildenhain Gesendet: Sonntag, 14. November 2004 14:16 An: Garito Cc: Lista Oficial de Zope Betreff: Re: [Zope] Zope and IIS6.0 (Windows 2003 server) Hi, Am Sonntag, den 14.11.2004, 12:08 +0100 schrieb Garito: ... > > > >Well, Apache is available for Windows as well, so you can put Apache > >as reverse Proxy in front of both IIS and Zope. Does not cost a cent > >and is very flexible. > > > Hi > Yes I think in these solution but I thinks is a little complicated 3 > servers I cross my fingers to find some good solution like in linux with apache etc. > Perhaps is time to apache Well Apache in front of IIS also helps to protect IIS. And if 3 servers scare you, maybe you can get rid of IIS ;)) Regards Tino _______________________________________________ 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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Left Menu (Frame) on ZMI not displaying
by Paul Sue 15 Nov '04

15 Nov '04

Hi, Suddenly, the left frame refuses to display .. I've tried restarting Zope to no avail .. I can login to the site as normal user. I see no errors in the logs. What the @#$!% is going on??? argh ...... :( Paul

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RE: [Zope] How to handle ZODB conflict errors
by Sean Hastings 15 Nov '04

15 Nov '04

The slowdowns result when various transactions are trying to modify the same data. When a conflict happens, one of the transactions is rolled back and attempted again from the beginning. If the transaction takes a long time to execute, and this happens many times, the delays can be considerable. Only after some number of attempts, with continuing conflicts occurring, will the transaction give up and allow the Conflict Error to actually be raised back to the level of producing an error page, but each one will be logged in your event.log file. I wrote the following to explain conflicts to my own satisfaction: ------------------------------------------------------------------- There are two types of conflict errors: Read Conflict: -------------- Transaction 1 reads object A. Transaction 2 modifies object B. Transaction 1 attempts to read object B, but notices that object B has been modified since Transaction 1 began to read data. Since the data it read from A, and the data that it now finds in B are not necessarily consistent, a Read Conflict Error is produced. Transaction 1 rolls back and restarts. Write Conflict: --------------- Transaction 1 reads object A. Transaction 2 modifies object A. Transaction 1 attempts to modify object A, but notices that object A has been modified since it was read. Since overwriting the changes made by Transaction 2 would cause "lost update problems" and possible data inconsistency, a Write Conflict Error is produced. If conflict is not handled (see below), Transaction 1 rolls back and restarts. Solutions: --------- Read Conflicts - If you do not care about consistency during your read, you can execute the statement "get_transaction().commit()" after each new object accessed. This breaks your transactions up into smaller transactions that are MUCH less likely to cause conflicts. I understand that Zope 2.8 (alpha any day now) will eliminate Read Conflicts by including the ability to read old constant states. In the example above, Transaction 1 would then just read the old state of B before Transaction 2 had modified it. Write Conflicts - You can define a method on any ZODB object called "_p_resolveConflict". When a write conflict occurs, the first thing that happens is that Zope tries to call this method to handle the problem, passing it all the possible states of the object: OLD, FOUND, and TRIED. OLD is the state that the transaction first read. FOUND is the new modified state that some other transaction saved the object as. TRIED is the state that the transaction wanted to save the object as when it realized that there was a conflict. This method is intended to return a merged version of the two objects. If you do not care about lost updates, this method could be as simple as: def _p_resolveConflict(self,old,found,tried): return tried ------------------------------------------------------------------- Here is an example of some code that I think works to handle write conflicts in an order independent list. The object in question is a ZODB wrapper for a list. The [] is stored in the "data" element referred to in saved.data, old.data, etc: def _p_resolveConflict(self,old,saved,new): """ Merges two possible list states Accounts only for additions and deletions, not changes of order Prevents duplicate add or remove of same Item during conflict """ #get changes made in saved state saved_added = [] saved_removed = [] for item in saved.data: for i in range(saved.count(item) - old.count(item)): saved_added.append(item) for item in old.data: for i in range(old.count(item) - saved.count(item)): saved_removed.append(item) #get changes made in new state new_added = [] new_removed = [] for item in new.data: for i in range(new.count(item) - old.count(item)): saved_added.append(item) for item in old.data: for i in range(old.count(item) - new.count(item)): new_removed.append(item) #get duplicate changes both_added=[] for item in new_added: if saved_added.count(item): both_added.append(item) new_added.remove(item) saved_added.remove(item) both_removed=[] for item in new_removed: if saved_removed.count(item): both_removed.append(item) new_removed.remove(item) saved_removed.remove(item) #apply changes old.extend(saved_added) old.extend(new_added) old.extend(both_added) for item in saved_removed: old.remove(item) for item in new_removed: old.remove(item) for item in both_removed: old.remove(item) return old

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Startup script for multiple Zope instances
by John Poltorak 15 Nov '04

15 Nov '04

How does anyone handle startup scripts for multiple Zope instances? Should they be started from a single script or should there be one script per instance? -- John

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Sort Photo in Photo folder on Exif date
by Martin Koekenberg 15 Nov '04

15 Nov '04

Hello, Has anyone already did this : Sort the photo's in a photofolder on the Photo 'Exif datetimeoriginal' My proble is that Iá a fotoalbum filled by several users. But I want to sort the foto's on time. Thanks for the help. Martin Koekenberg

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Syncing the Control Panel Product Directory
by Dennis Allison 15 Nov '04

15 Nov '04

Moving from Zope 2.6 to Zope 2.7.3 I pruned the installed Products to only those used and removed the cruft. Sad to say, the Control Panel Product listing still lists te old Products along with the new ones. Is there some easy way to refresh the list?

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Overly large zexp files sizes
by zope＠dylanjay.com 15 Nov '04

15 Nov '04

Hi All, I've recently started having some problems with exporting objects. I'm finding that some objects seem to export the entire zodb along with them when exported. It seems random which objects export normally and which end up being the 150mb roughly corresponding to if the whole zodb had been exported. If I reimport it I get the object back as expected, no more no less. If I create a new Plone site for instance it will export at 150mb too, but selected older sites will export fine. Somehow something is hooking into everything such that pickling is causing everything to be dragged in. Anyone had this problem? Anyone with any debug ideas as I'm running out. 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 Y!: dylan_jay ~ ICQ:520341 ~ Ph:+61(0)423198306

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emailinzope and atemail checked in to collective
by Tim Hicks 14 Nov '04

14 Nov '04

Hello, I've just checked two very experimental products into the collective on sourceforge. 'emailinzope' is an SMTP server (based very heavily on Nikolay Kim's smtpserver code in the collective) that allows ZODB objects to have an influence over if and how messages are delivered into zope. 'atemail' is provides a set of objects that allow incoming messages from the emailinzope SMTP server to be received, managed and stored. There are no 'releases' of these products and I'm only announcing at this early stage to see if there are any people interested in functionality of this sort in the hope that code contributions may follow. The *very* pre-alpha nature of the code, the rather awkward requirements on the atemail product (zope 2.8.x and potentially a patched CMF) and the fact that access to the code is only via CVS checkout means that this announcement is only likely to be of interest to developers willing to get their hands a little dirty. Questions and feedback more than welcome. tim

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how to get more verbose logging
by Jonas Meurer 14 Nov '04

14 Nov '04

hello, at trying to debug a problem that causes zope to crash, a more verbose logging would be very usefull. I already use the event.log, but up to now i had EVENT_LOG_SEVERITY at -100 (BLATHER), what worked quite well. now i raised the environment variable to -300, in the hope to get TRACE logging, as mentioned in the Zope 2.6 documentation. anyway, event.log still doesn't give logs lower than BLATHER. I'm not absolutely sure whether it should, but normally TRACE should already give some more information at starting the process, shouldn't it. even if i produce the problem that crashes zope, the lowest log is BLATHER, and i get no more verbose logging output. i tested this in zope 2.6.4 with python2.1 and python2.2, and both don't provide any new information. any suggestions? bye jonas

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