June 2004 - Zope-Dev

Announce: June Zope Bug Day!
by Chris Withers 27 Jul '04

27 Jul '04

Hi All, Another month has scarily quickly passed us by, and so I'm pleased to announce the second monthly bug day, although on much shortner notice this time: What? Zope Bug Day working from http://collector.zope.org/Zope When? Friday 25th June (tomorrow) - from when you wake up until when the day ends! Where? #zope-dev on irc.zope.org Come along and help if you've got a chance! Read this if you want to know how: http://dev.zope.org/CVS/BugDays cheers, Chris -- Simplistix - Content Management, Zope & Python Consulting - http://www.simplistix.co.uk

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How do you open mounted databases on startup in 2.7?
by Chris Withers 30 Jun '04

30 Jun '04

In 2.6, with DBTab, I had something like: [Storage: Packed] type=ClientStorage addr=zeo://localhost:6001 storage=packed cache_size=100000000 [Database: Packed] cache_size=4000 mount_paths=/somepath open_at_startup=1 The closest I can get in 2.7 is: <zodb_db packed> <zeoclient> server 127.0.0.1:6001 storage packed cache-size 100000000 wait on </zeoclient> mount-point /content cache-size 4000 </zodb_db> What do I use instead of open_at_startup or has this functionality vanished in 2.7? cheers, Chris -- Simplistix - Content Management, Zope & Python Consulting - http://www.simplistix.co.uk

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Weird AssertionError on History Compare in Zope 2.7.1 PythonScript
by Chris Withers 30 Jun '04

30 Jun '04

Hi, I upgraded a Zope 2.6.2 site to 2.7.1. Since then, the history tab of all my old Script(Python)'s is broken. If I try to do a compare between two versions, or just view a historical revision, I get the following error: 2004-06-30T17:41:22 ERROR(200) SiteError http://localhost:8001/myScript/HistoricalRevisions/848.5934.59436.15445 Traceback (most recent call last): File "e:\Zope\2.7.1\lib\python\ZPublisher\Publish.py", line 92, in publish object=request.traverse(path, validated_hook=validated_hook) File "e:\Zope\2.7.1\lib\python\ZPublisher\BaseRequest.py", line 328, in traver se try: subobject=object[entry_name] File "e:\Zope\2.7.1\lib\python\OFS\History.py", line 67, in __getitem__ rev=historicalRevision(self, serial) File "e:\Zope\2.7.1\lib\python\OFS\History.py", line 52, in historicalRevision rev.__setstate__(state) File "e:\Zope\2.7.1\lib\python\Products\PythonScripts\PythonScript.py", line 2 17, in __setstate__ self._body = body + '\n' File "E:\Zope\2.7.1\lib\python\ZODB\Connection.py", line 534, in register assert object._p_jar is self Script (Python)'s I've created since the upgrade are fine, but any old ones that were around have a buggered history. I figure this is a bug of some sort, but thought I'd ask here too. The bug report is at: http://zope.org/Collectors/Zope/1394 ...if anyone would prefer to follow up in the collector... Chris -- Simplistix - Content Management, Zope & Python Consulting - http://www.simplistix.co.uk

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[Warning] Zope/ZEO clients: subprocesses can lead to non-deterministic message loss
by Dieter Maurer 29 Jun '04

29 Jun '04

ATTENTION: Crosspost -- Reply-To set to 'zope-dev(a)zope.org' Today, I hit a nasty error. The error affects applications under Unix (and maybe Windows) which * use an "asyncore" mainloop thread (and maybe other asyncore applications) Zope and many ZEO clients belong to this class and * create subprocesses (via "fork" and "system", "popen" or friends if they use "fork" internally (they do under Unix but I think not under Windows)). The error can cause non-deterministic loss of messages (HTTP requests, ZEO server responses, ...) destined for the parent process. It also can cause the same output to be send several times over sockets. The error is explained as follows: "asyncore" maintains a map from file descriptors to handlers. The "asyncore" main loop waits for any file descriptor to become "active" and then calls the corresponding handler. When a process forks the complete state, including file descriptors, threads and memory state is copied and the new process executes in this copied state. We now have 2 "asyncore" threads waiting for the same events. File descriptors are shared between parent and child. When the child reads from a file descriptor from its parent, it steals the corresponding message: the message will not reach the parent. While file descriptors are shared, memory state is separate. Therefore, pending writes can be performed by both parent and child -- leading to duplicate writes to the same file descriptor. A workaround it to deactivate "asyncore" before forking (or "system", "popen", ...) and reactivate it afterwards: as exemplified in the following code: from asyncore import socket_map saved_socket_map = socket_map.copy() socket_map.clear() # deactivate "asyncore" pid = None try: pid = fork() if (pid == 0): # child # ... finally: if pid != 0: socket_map.update(saved_socket_map) # reactivate "asyncore" -- Dieter

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Astor specializes in electronic/electrical items, auto, as well as hand tools ~ Provides the good competition price !!!!!!
by Astor Industrial Corporation 29 Jun '04

29 Jun '04

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Pitanguinha
by caroool2003 29 Jun '04

29 Jun '04

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VIRUS IN YOUR MAIL
by postmaster＠mail.dfa.gov.ph 29 Jun '04

29 Jun '04

V I R U S A L E R T Our viruschecker found a VIRUS in your email to the following recipient(s): -> cairope(a)dfa.gov.ph Please check your system for viruses, or ask your system administrator to do so. For further information about this viruschecker see: http://amavis.org/ AMaViS - A Mail Virus Scanner, licensed GPL For your reference, here are the headers from your email: ------------------------- BEGIN HEADERS ----------------------------- Received: from dfa.gov.ph (host93-191.pool82105.interbusiness.it [82.105.191.93]) by mail.dfa.gov.ph (Postfix) with ESMTP id CACB37D314 for <cairope(a)dfa.gov.ph>; Tue, 29 Jun 2004 15:27:51 +0800 (PHT) From: zope-dev(a)zope.org To: cairope(a)dfa.gov.ph Subject: Mail Delivery (failure cairope(a)dfa.gov.ph) Date: Tue, 29 Jun 2004 09:28:24 +0200 MIME-Version: 1.0 Content-Type: multipart/related; type="multipart/alternative"; boundary="----=_NextPart_000_001B_01C0CA80.6B015D10" X-Priority: 3 X-MSMail-Priority: Normal Message-Id: <20040629072751.CACB37D314(a)mail.dfa.gov.ph> -------------------------- END HEADERS ------------------------------

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do not give up!
by bpi.gemini.express＠utanet.at 29 Jun '04

29 Jun '04

important?

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by Christopher Gaines 28 Jun '04

28 Jun '04

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by Luisa Womack 28 Jun '04

28 Jun '04

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