- Zope-Dev - Zope lists

Re: [Zope-dev] Possible DateTime timezone-related regression in Zope 2.12
by Laurence Rowe 05 Mar '10

05 Mar '10

2010/1/10 <zopyxfilter(a)gmail.com>: > -----BEGIN PGP SIGNED MESSAGE----- > Hash: SHA1 > > Martin Aspeli wrote: >> Wichert Akkerman wrote: >>> On 2010-1-10 04:36, Martin Aspeli wrote: >>>> so in your test, `DateTime(md.CreationDate())` will always be >>>> the current time, but with an implicitly added 'GMT+0' while >>>> `DateTime()` will be the current time in your local time zone. >>>> so if i'm not mistaken, on plone 4.0 the test with fail for you >>>> an me (in 'GMT+x' time zones) and pass in the u.s. fun! :) >>>> >>>> Does anyone know if this change was deliberate, or what may >>>> have happened? >>> Have you looked at >>> http://zope3.pov.lt/trac/log/Zope/trunk/lib/python/DateTime?rev=95999 >>> >>> > for hints? >> >> Yes, there are various timezone related changes, e.g. >> >> http://zope3.pov.lt/trac/changeset/81213/Zope/trunk/lib/python/DateTime >> >> > http://zope3.pov.lt/trac/changeset/85830/Zope/trunk/lib/python/DateTime >> >> It's hard to know whether this was an intended change or not, and >> if so, how to deal with the breakage in a way that's compatible >> with 2.10 and 2.12. >> >> I blame Laurence. :-p > Better blame DateTime :-) > Fixing one issue in DateTime is likely to trigger another new bug. > The DateTime is just fragile. I believe the current behaviour is intentional to preserve backwards compatibility. See the discussion starting here: https://mail.zope.org/pipermail/zope-dev/2007-October/030042.html Maybe it was 'fixed' on 2.10 branch some time later. Laurence

3 4

Zope3 sessions and database conflicts
by Hermann Himmelbauer 05 Mar '10

05 Mar '10

Hi, For quite some time I see messages like this in my z3.log: 2010-03-02T16:27:14 WARNING ZopePublication Competing writes/reads at /BSPSite/act/++vh++http:zis.act.at:80/bankneu/++/images/sponsor_logo.png: database conflict error (oid 0x063f, class BTrees.OOBTree.OOBucket, serial this txn started with 0x038484dc7d5ac044 2010-03-02 14:52:29.379960, serial currently committed 0x038484ff3c6b5455 2010-03-02 15:27:14.160763) I followed an advice from the zope-dev list and added some debug messages in ZODB.Connection.py where the objects are registered for writing. The following debug messages (I print the key/values of the object in question) occur before and after the database conflict error: ------------------- 2010-03-02T16:27:14 DEBUG zbsp keys: ['6ZZzgjNK0p.bIIlruXb4JkDo-T0J-XipPcVFGtcj0 LH6dMdI9akYvg', ......... , '7MmOPQOlkAHoa3T nydH9IIgKBqoVyn3Q.yH6OXJeLj7epObIy3M5Lg'] ----------- 2010-03-02T16:27:14 DEBUG zbsp values: [<zope.session.session.SessionData object at 0x43723bec>, <zope.session.session.SessionData object at 0x4372356c>, <zope.session.session.SessionData object at 0x437233ec>, ......... <zope.session.session.SessionData object at 0x436b586c>, <zope.session.session.SessionData object at 0x436b532c>, <zope.session.session.SessionData object at 0x43640b6c>,<zope.session.session.SessionData object at 0x436b572c>] ------------------- So it seems these are the session data containers. I wonder why they are written? Perhaps this happens when somebody else is logging into the system (so a new session is added) and others are concurrently reading from the session? However, this would mean that the session mechanism has a flaw, as this is a standard procedure? Any ideas of how to fix this? Best Regards, Hermann -- hermann(a)qwer.tk GPG key ID: 299893C7 (on keyservers) FP: 0124 2584 8809 EF2A DBF9 4902 64B4 D16B 2998 93C7

3 2

Summary of today's developer meeting
by Christian Theune 05 Mar '10

05 Mar '10

Hi, here's my first shot at a summary of today's meeting. I found the meeting itself very positive and energetic - thanks again to everyone who joined. If anyone knows another good place to announce this summary (we should be more visible to the outside world!), please feel free to post them (or link to them) somewhere and maybe tell me for the future. Cheers, Christian -- Christian Theune · ct(a)gocept.com gocept gmbh & co. kg · forsterstraße 29 · 06112 halle (saale) · germany http://gocept.com · tel +49 345 1229889 0 · fax +49 345 1229889 1 Zope and Plone consulting and development

14 22

Uses of the ZTK and how it relates to management
by Jim Fulton 05 Mar '10

05 Mar '10

On Wed, Mar 3, 2010 at 3:14 PM, Fabio Tranchitella <kobold(a)kobold.it> wrote: > * 2010-03-03 20:41, Chris McDonough wrote: >> Why wouldn't that be worked out here? Is it because you just want the >> mechanics of such a project done elsewhere without having to see it >> talked about on this maillist? Or is it because you disagree that it >> should be done? Or... what? > > The main issue is related to the different use cases we have for the ZTK: > some people use (or want to use) the ZTK as a monolithic set of packages > that can be considered "somehow" the upgrade path from zope3 with the > exclusion of zope.app.* (if possible). > > Others (like me and you, Chris) see the ZTK as a set of core packages > (mainly the bicycle repair kit, which is not the only self-contained subset > of useful packages though) plus a huge load of dependencies we are bringing > forward from the "old" zope3 releases. Others, like me and Martijn and probably many many others, see the ZTK as a set of packages that can be used in various subsets and combination. We want as few dependencies as possible. We also want a configuration of versions that are known to work together because they are tested together. We want stability and we want processes that will help us move forward. I don't think the people who want to advance Blue Bream are really all that different. > Our points of view are totally different, I don't think so. Where we seem to differ is on the specific point of change management, and especially testing. > and I suppose the first group of > people fear that fragmentation can influence the quality and stability of > the ZTK as a whole. The ZTK was created in part to deal with instability issues arising from people working on parts without testing the whole. > In my opinion, we can only gain defining explicitly the bicycle repair kit > if somebody is willing to maintain it (and I refer to documentation and > marketing stuff, not code because it is already very stable). If this > cannot be done with consensus on zope-dev, but a group of people is really > interested in it, I don't think it can be or should be stopped and, TBH, I > don't see how it can influence the ZTK. I don't think anyone is objecting to marketing efforts. Even these core components will need maintenance and updates from time to time. *An* important question is how these changes will be ma naged in the context of the larger community. Jim -- Jim Fulton

6 10

Re: [Zope-dev] Zope3 sessions and database conflicts
by kevin gill 04 Mar '10

04 Mar '10

> Hi, > For quite some time I see messages like this in my z3.log: > > 2010-03-02T16:27:14 WARNING ZopePublication Competing writes/reads > at > /BSPSite/act/++vh++http:zis.act.at:80/bankneu/++/images/sponsor_logo.png: > database conflict error (oid 0x063f, class BTrees.OOBTree.OOBucket, serial > this txn started with 0x038484dc7d5ac044 2010-03-02 14:52:29.379960, > serial > currently committed 0x038484ff3c6b5455 2010-03-02 15:27:14.160763) > > I followed an advice from the zope-dev list and added some debug messages > in > ZODB.Connection.py where the objects are registered for writing. > > The following debug messages (I print the key/values of the object in > question) occur before and after the database conflict error: > > ------------------- > 2010-03-02T16:27:14 DEBUG zbsp keys: > ['6ZZzgjNK0p.bIIlruXb4JkDo-T0J-XipPcVFGtcj0 > LH6dMdI9akYvg', ......... , '7MmOPQOlkAHoa3T > nydH9IIgKBqoVyn3Q.yH6OXJeLj7epObIy3M5Lg'] > ----------- > 2010-03-02T16:27:14 DEBUG zbsp values: [<zope.session.session.SessionData > object at 0x43723bec>, <zope.session.session.SessionData object at > 0x4372356c>, <zope.session.session.SessionData object at 0x437233ec>, > ......... > <zope.session.session.SessionData object at 0x436b586c>, > <zope.session.session.SessionData object at 0x436b532c>, > <zope.session.session.SessionData object at > 0x43640b6c>,<zope.session.session.SessionData object at 0x436b572c>] > ------------------- > > So it seems these are the session data containers. > > I wonder why they are written? Perhaps this happens when somebody else is > logging into the system (so a new session is added) and others are > concurrently reading from the session? However, this would mean that the > session mechanism has a flaw, as this is a standard procedure? > > Any ideas of how to fix this? I had a serious problem with the session machinery. I use a very long timeout on sessions and thus have a large number of sessions saved (up to 30k). The sweep machinery kicks in and sweeps everything. It takes so long that all the threads do the sweep and you get these errors. I customised the sweep for my site as follows: 1. Only sweep at night 2. Sweep a random subset of the data (20 records), but sweep very often 3. Different timeouts for authenticated sessions and anonymous sessions. Regards, Kevin > > Best Regards, > Hermann > > -- > hermann(a)qwer.tk > GPG key ID: 299893C7 (on keyservers) > FP: 0124 2584 8809 EF2A DBF9 4902 64B4 D16B 2998 93C7 > _______________________________________________ > Zope-Dev maillist - Zope-Dev(a)zope.org > https://mail.zope.org/mailman/listinfo/zope-dev > ** No cross posts or HTML encoding! ** > (Related lists - > https://mail.zope.org/mailman/listinfo/zope-announce > https://mail.zope.org/mailman/listinfo/zope ) > > >

2 1

Re: [Zope-dev] Zope3 sessions and database conflicts
by kevin gill 04 Mar '10

04 Mar '10

Hi, For quite some time I see messages like this in my z3.log: 2010-03-02T16:27:14 WARNING ZopePublication Competing writes/reads at /BSPSite/act/++vh++http:zis.act.at:80/bankneu/++/images/sponsor_logo.png: database conflict error (oid 0x063f, class BTrees.OOBTree.OOBucket, serial this txn started with 0x038484dc7d5ac044 2010-03-02 14:52:29.379960, serial currently committed 0x038484ff3c6b5455 2010-03-02 15:27:14.160763) I followed an advice from the zope-dev list and added some debug messages in ZODB.Connection.py where the objects are registered for writing. The following debug messages (I print the key/values of the object in question) occur before and after the database conflict error: ------------------- 2010-03-02T16:27:14 DEBUG zbsp keys: ['6ZZzgjNK0p.bIIlruXb4JkDo-T0J-XipPcVFGtcj0 LH6dMdI9akYvg', ......... , '7MmOPQOlkAHoa3T nydH9IIgKBqoVyn3Q.yH6OXJeLj7epObIy3M5Lg'] ----------- 2010-03-02T16:27:14 DEBUG zbsp values: [<zope.session.session.SessionData object at 0x43723bec>, <zope.session.session.SessionData object at 0x4372356c>, <zope.session.session.SessionData object at 0x437233ec>, ......... <zope.session.session.SessionData object at 0x436b586c>, <zope.session.session.SessionData object at 0x436b532c>, <zope.session.session.SessionData object at 0x43640b6c>,<zope.session.session.SessionData object at 0x436b572c>] ------------------- So it seems these are the session data containers. I wonder why they are written? Perhaps this happens when somebody else is logging into the system (so a new session is added) and others are concurrently reading from the session? However, this would mean that the session mechanism has a flaw, as this is a standard procedure? Any ideas of how to fix this? Best Regards, Hermann -- hermann(a)qwer.tk GPG key ID: 299893C7 (on keyservers) FP: 0124 2584 8809 EF2A DBF9 4902 64B4 D16B 2998 93C7 _______________________________________________ Zope-Dev maillist - Zope-Dev(a)zope.org https://mail.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - https://mail.zope.org/mailman/listinfo/zope-announce https://mail.zope.org/mailman/listinfo/zope )

1 0

Zope Tests: 6 OK
by Zope Tests Summarizer 04 Mar '10

04 Mar '10

Summary of messages to the zope-tests list. Period Wed Mar 3 12:00:00 2010 UTC to Thu Mar 4 12:00:00 2010 UTC. There were 6 messages: 6 from Zope Tests. Tests passed OK --------------- Subject: OK : Zope-2.10 Python-2.4.6 : Linux From: Zope Tests Date: Wed Mar 3 20:36:59 EST 2010 URL: http://mail.zope.org/pipermail/zope-tests/2010-March/013671.html Subject: OK : Zope-2.11 Python-2.4.6 : Linux From: Zope Tests Date: Wed Mar 3 20:38:59 EST 2010 URL: http://mail.zope.org/pipermail/zope-tests/2010-March/013672.html Subject: OK : Zope-2.12 Python-2.6.4 : Linux From: Zope Tests Date: Wed Mar 3 20:40:59 EST 2010 URL: http://mail.zope.org/pipermail/zope-tests/2010-March/013673.html Subject: OK : Zope-2.12-alltests Python-2.6.4 : Linux From: Zope Tests Date: Wed Mar 3 20:42:59 EST 2010 URL: http://mail.zope.org/pipermail/zope-tests/2010-March/013674.html Subject: OK : Zope-trunk Python-2.6.4 : Linux From: Zope Tests Date: Wed Mar 3 20:44:59 EST 2010 URL: http://mail.zope.org/pipermail/zope-tests/2010-March/013675.html Subject: OK : Zope-trunk-alltests Python-2.6.4 : Linux From: Zope Tests Date: Wed Mar 3 20:46:59 EST 2010 URL: http://mail.zope.org/pipermail/zope-tests/2010-March/013676.html

1 0

Stop energy
by Jim Fulton 03 Mar '10

03 Mar '10

On Wed, Mar 3, 2010 at 1:20 AM, Christian Theune <ct(a)gocept.com> wrote: > Morning, > > On 03/02/2010 07:09 PM, Martijn Faassen wrote: >> Hi there, >> >> > Chris McDonough suggests to ponder further structuring of the ZTK into >> > separate sub-sets which might allow us to get better mileage regarding >> > maintenance and release management. He gave the example of the >> > "Bicycle Toolkit" (zope.component, zope.configuration, >> > zope.interface). >> >> -1 > > Uhh. -1 for what? -1 for pondering *something*? The note I took was a > request for thinking about something. No *I'm* confused about stop energy. Oh come on. No, it's not -1 to pondering something. It's -1 to the idea of "splitting the ZTK into separate sub-sets which might allow us to get better mileage regarding maintenance and release management." I suppose Martijn should have said something like: "I'm thinking of disagreeing with that idea." On Wed, Mar 3, 2010 at 5:06 AM, Marius Gedminas <marius(a)gedmin.as> wrote: > On Wed, Mar 03, 2010 at 10:06:18AM +0100, Hermann Himmelbauer wrote: >> Am Mittwoch 03 M�rz 2010 01:28:21 schrieb Chris McDonough: >> > On 3/2/10 2:50 PM, Jim Fulton wrote: >> > > On Tue, Mar 2, 2010 at 2:18 PM, Chris McDonough<chrism(a)plope.com> wrote: >> > >> On 3/2/10 1:09 PM, Martijn Faassen wrote: >> > >>> Hi there, >> > >>> >> > >>> > Chris McDonough suggests to ponder further structuring of the ZTK >> > >>> > into separate sub-sets which might allow us to get better mileage >> > >>> > regarding maintenance and release management. He gave the example >> > >>> > of the "Bicycle Toolkit" (zope.component, zope.configuration, >> > >>> > zope.interface). >> > >>> >> > >>> -1 >> > >> >> > >> I don't know who "people" are, and I don't know who "they" are, and I >> > >> don't know who broke what. >> > > >> > > No one should have to extract anything from the ZTK, because, AFAIK, >> > > the ZTK isn't a distribution. >> > >> > You've both successfully beaten any initiative out of me again. Well done. >> > Full speed ahead. >> >> Hmmm, interesting: ... >> As anyone can see, "worker_thread" is not started often, which is not optimal. >> How could this be improved? > > More positive feedback, less negative feedback. I'm not sure what you're referring to here. Does Martijn and me disagreeing with an idea constitute negative feedback? Is disagreement not allowed? If so, that doesn't leave much room for discussion. Or is Chris' characterization of my disagreement with him as "beating" negative feedback. This seems more appropriate to me, but I'm not sure what you mean. Jim -- Jim Fulton

5 9

z3c.form: Missing hidden widgets templates for radio buttons
by Timo Stollenwerk 03 Mar '10

03 Mar '10

Hello, I ran into problems when I was trying to hide a widget for a radio button inside a z3c.form (or plone.z3cform): ComponentLookupError: ( (<PloneSite at /test>, <HTTPRequest, URL=http://localhost:9080/test/comment_form>, <example.z3cformtutorial.comment.CommentForm object at 0xe67e90c>, <zope.schema._bootstrapfields.Bool object at 0xbdf368c>, <RadioWidget 'form.widgets.mybool'>), <InterfaceClass zope.pagetemplate.interfaces.IPageTemplate>, 'hidden') Full code: http://pastie.org/851816 I got a component error due to the missing hidden widget templates for the radio button widget: http://svn.zope.org/repos/main/z3c.form/branches/1.9/TODOS.txt: - There is only hidden widget templates registered for ``ITextWidget`` and ``ISelectWidget``. We have to define more hidden widgets. I would like to add the missing templates and registrations to the z3c.form code. Though, I need to fix this for the 1.9 branch too. I have the necessary permissions for the Zope SVN. Though, I'm not sure about the best way to do this. Shall I start a branch of the existing z3c.form 1.9 branch or fix this in the trunk and merge it into the 1.9 branch afterwards? I would like to fix this as soon as possible, and also make a new z3c.form 1.9.x release, if possible. Cheers, timo

2 1

Zope Tests: 6 OK
by Zope Tests Summarizer 03 Mar '10

03 Mar '10

Summary of messages to the zope-tests list. Period Tue Mar 2 12:00:00 2010 UTC to Wed Mar 3 12:00:00 2010 UTC. There were 6 messages: 6 from Zope Tests. Tests passed OK --------------- Subject: OK : Zope-2.10 Python-2.4.6 : Linux From: Zope Tests Date: Tue Mar 2 20:36:58 EST 2010 URL: http://mail.zope.org/pipermail/zope-tests/2010-March/013665.html Subject: OK : Zope-2.11 Python-2.4.6 : Linux From: Zope Tests Date: Tue Mar 2 20:38:58 EST 2010 URL: http://mail.zope.org/pipermail/zope-tests/2010-March/013666.html Subject: OK : Zope-2.12 Python-2.6.4 : Linux From: Zope Tests Date: Tue Mar 2 20:40:58 EST 2010 URL: http://mail.zope.org/pipermail/zope-tests/2010-March/013667.html Subject: OK : Zope-2.12-alltests Python-2.6.4 : Linux From: Zope Tests Date: Tue Mar 2 20:42:58 EST 2010 URL: http://mail.zope.org/pipermail/zope-tests/2010-March/013668.html Subject: OK : Zope-trunk Python-2.6.4 : Linux From: Zope Tests Date: Tue Mar 2 20:44:58 EST 2010 URL: http://mail.zope.org/pipermail/zope-tests/2010-March/013669.html Subject: OK : Zope-trunk-alltests Python-2.6.4 : Linux From: Zope Tests Date: Tue Mar 2 20:46:58 EST 2010 URL: http://mail.zope.org/pipermail/zope-tests/2010-March/013670.html

1 0