October 2002 - Zope-Dev

Re: zdaemon fix
by Guido van Rossum 05 Oct '02

05 Oct '02

BTW, here's the patch I propose: *** Daemon.py 14 Aug 2002 22:12:52 -0000 1.11 --- Daemon.py 5 Oct 2002 08:14:51 -0000 *************** *** 17,22 **** --- 17,28 ---- import zLOG from SignalPasser import SignalPasser + # If zdaemon finds that it is continuously respawning more than 10 + # times in 2 minutes, it will assume that there is an error, log a + # PANIC level message, and exit. + RESPAWN_TIME = 120 # 2 minutes + RESPAWN_LIMIT = 10 # 10 times + pyth = sys.executable class DieNow(Exception): *************** *** 32,38 **** --- 38,54 ---- if not os.environ.has_key('Z_DEBUG_MODE'): detach() # detach from the controlling terminal + starttimes = [] # for RESPAWN_LIMIT while 1: + # Give up if respawning too often + starttimes.append(time.time()) + if len(starttimes) > RESPAWN_LIMIT: + del starttimes[0] + if starttimes[-1] - starttimes[0] < RESPAWN_TIME: + pstamp('Respawning more than %d times in %d seconds. Quit.' % + (RESPAWN_LIMIT, RESPAWN_TIME), zLOG.PANIC) + sys.exit(1) + del starttimes[0] try: pid = os.fork() if pid: While we're improving zdaemon, I have two other suggestions: - Use grown-up language in log messages rather than "Aiieee!" and "Houston, we have forked" - Why does zdaemon add "zdaemon: <timestamp>: " to its log messages? That info is already added by zLOG. A typical set of zdaemon log messages now looks like this: ------ 2002-10-05T04:23:31 INFO(0) zdaemon zdaemon: Sat Oct 5 04:23:31 2002: Houston, we have forked: pid 2915 ------ 2002-10-05T04:24:12 ERROR(200) zdaemon zdaemon: Sat Oct 5 04:24:12 2002: Aiieee! Process 2915 terminated normally, exit status: 1 ------ while it could look like this: ------ 2002-10-05T04:23:31 INFO(0) zdaemon Started subprocess: pid 2915 ------ 2002-10-05T04:24:12 ERROR(200) zdaemon Process 2915 terminated normally, exit status: 1 ------ --Guido van Rossum (home page: http://www.python.org/~guido/)

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http://cvs.zope.org/Products/Scheduler vs Xron for cron-like functionality. Advice?
by Craeg K Strong 04 Oct '02

04 Oct '02

Hello: I am looking for a way to schedule events within my Zope-based web application. Here are my requirements: - Zope 2.5.1 platform - Win/UNIX/Linux compatibility - Ability to view and modify scheduled events - repeating and one-time events - ZPT based or integratable - Easy to integrate into my application (e.g. event executes my method, I can display lists of pending events within my own custom forms) It looks like there are two likely options: http://cvs.zope.org/Products/Scheduler -vs- http://www.zope.org/Members/lstaffor/Xron The Xron product release is almost a year old, but Scheduler seems to be only available via CVS. Can anyone comment as to the maturity/stability of these products? Any advice would be much appreciated. Thanks! --Craeg

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by Maximus Ozdemir 04 Oct '02

04 Oct '02

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I smell commercial interest: PLOPE
by Diogenese Teufelsdrockh 04 Oct '02

04 Oct '02

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Correct Usage of Page Templates
by Brian R Brinegar 04 Oct '02

04 Oct '02

Good Day, I'm having trouble grasping the complete usage of Page Templates. I understand the beauty of TAL and METAL. I have say a hundred secretaries that use WebDAV clients to create and edit content. Currently if one of them creates new content in say MS Word and drags it on to the Zope server a File object is created. What I want is to have an object with the look and feel of my standard_template created. I can use a put factory to have it create a new page template instead of a file. But then I get a page template that does not use the look and feel of the standard template. I could even change the default template to do something more reasonable but the user must create the file/object on the server and then edit it. A file/object cannot be created on the client and dropped in place on the server. I do not want to try to teach these people METAL or tell them anything about macros. I just want the content to drop in and fit with the look of my site. I have found that I can create a standard_template with: <div tal:content="structure here/data">Content</div> in the body and then access files like index.html/standard_template and everything works great. The problem is that the users have to know to create links with /standard_template after the file. Am I thinking about something wrong? My users don't understand HTML or Tags they know MS Word and Dreamweaver. If I tell them to edit anything in source view they scream at me. Any ideas? Thanks, -Brian Brinegar Web System Developer / Programmer

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form variables and **kw
by Oliver Bleutgen 04 Oct '02

04 Oct '02

Reposting to zope-dev because no answers on the zope list. Hi all, I have some questions. Say I have a external method/product method return_vars which I call from a form: def return_vars(self, var=None, **kw): return "var: %s, kw: %s" % (var,kw) Is it correct that any passed form variable besides "var" will get lost, i.e. that ZPublisher will _not_ marshall the other variables into the method call? If so, why? Is this a python limitation? I played around with co_varnames and python doesn't seem to offer a possibility to recognize **kw as something special. Where does this marshalling happen, in ZPublisher/mapply.py? TIA, oliver

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Plone/Metadata/FUD
by James Johnson 03 Oct '02

03 Oct '02

I've been around the Zope/Python scene for many years. One thing I see this group suffer I believe if from the groupthink mentality. Imho Alexander Limi "2 cents worth" demonstrated Erik's point perfectly. applaud the effort made with plone. I believe it to be a spoon in which we can spoon feed newbies into the CMS side of the Zope way. Seem my post regarding Zopezen.org. Plone is slow. Zope with CMF is slow... Not as slow as plone, but the issue is with ZPT. There is no way around it Erik is right. Developer time being spent on speeding up plone in order to backport the improvements to Zope/CMF sounds... Well arse backwards. Plone has its place, but I suspect some doublespeak here, lets be realistic about it. I debated a long time ago about CMS being the core of Zope anyway, but lo and behold they pushed on with a "CMF" product. I see plone as being the same, a product. Now my understanding is that with Zope3, they will roll a lot of the CMF functionality into Zope3.... Hmm go figure? All that time wasted on maintaining 2 products Zope/CMF has proven cumbersome at the least imho. Now just imagine if the community would have listened to the lone voice James-then/Erik-now where we would be today. We all know that the decision back then was based on commercial interest for ZC and others trying to market some industry catch phrase. So I hear you Erik, you have these wonderful, bright people working on special interest projects, but not on the core issues that allow Zope to have that strong core that it needs to move it forward. With it being evident in how the "Release early/Release often" mantra has been thrown to the wayside, I'm left wondering what do I do next with my 2.5.1 site? Do I go the plone, 2.6, 2.7 or 3.0 route? Like I said before, as a qoute from Mr limi" you should not mix in the >Plone name if you do not intend to follow our guidelines. "TM. Plone is a major benefit to the community. Please keep up the good work and effort. I believe that the master minds behind it all should be working to make Zope3 a reality for the plone product and not the other way around, hence you'll screw up mixed-up people like me even more. I hope I'm making some sense with this. I understand that this is "free" software, but as I "community" we should work toward making sure that we all can have a voice and benefit from plone/zope 2.5-2.6-2.7-3.0/CMF/Thingy. I'm sure I'll have to take a loan out on this, because it's more than 2 cents worth ;-). Peace, -- James I am a Washington State Citizen. Spamming this Email Address may be against Washington State Law Chapter 19.86, and 19.190 RCW. http://www.wa.gov/ago/junkemail/protect.html At 05:08 PM 10/2/02, Alexander Limi wrote: ><quote who="Erik Lange"> > > > In the install-script for MMM Skins, we call it a "plone rip-off"... > > I've suggested that we change the product name to "Plone skin" to Alan, > > to recognize the fine work of Plone, and to make it clear what it is: A > > skin that gives your CMF-site a Plone-look, and nothing more... > >As one of the two designers of the Plone skin, I thought I would send you >my 2 cents on this. Most welcome ! :-) >Not to be harsh, but calling your skin anything with Plone would just >cause confusion, as it has none of the distinguishing marks of the >original look, apart from the blue color. Nevertheless people constantly assumes that we use Plone on our sites... so it must have something in common with the Plone 'thingy' ... Check: http://www.mmmanager.org/Members/erla/1018802975267402990/talkback/10188299… >You break almost every consistency rule and design decision in your skin, Yep - the rules set up by Plone - not the rules of CMF ;-) That was what leed us to make the product in the first place... >and it is nowhere near being Plone, neither from a usability nor a design >perspective. Nope - and we're proud of that ;-) >I will not comment further on this, I find this discussion a bit >far-fetched. Plone is a separate entity, and you should not mix in the >Plone name if you do not intend to follow our guidelines. I agree :-) And we don't intend to follow your guidelines.. sorry.. but why should we ? How about "CMF Zlone skin" for a name ? ;-) Or "CMF BTTF Skin" ? BBTF = back to the future ;-) Is it okay that we thanks Plone.org for the inspiration and basic layout in the next release ? Or should we simply just blame it all on Canada ? *ROTFL* Regards, Erik _________________________________________________________________ Chat with friends online, try MSN Messenger: http://messenger.msn.com

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Compiling on Mac OS X 10.2
by Aparajita Fishman 03 Oct '02

03 Oct '02

Hi all, For the benefit of all Jaguar (10.2) users, here is the complete steps I followed to compile and install readline 4.3, postgres 7.2.2, mxDateTime 2.0.4 and psycopg 1.0.12. All were compiled from the source tarballs available from the respective web sites. Preliminary steps ----------------- 1. cd /usr/lib/python2.2/config 2. Edit Makefile (with sudo), look for the line that begins "LDFLAGS=". In mine it is line 62. 3. If the line reads: LDFLAGS= -arch i386 -arch ppc change it to: LDFLAGS= -arch ppc In other words, remove the errant "-arch i386". Why that is there only the people at Apple know. Maybe they did a build of Darwin on x86 and forgot to remove that flag in the final build. 4. Save the changes. readline -------- 1. After untarring, cd into readline-4.3/support 2. Edit shobj-conf and find the section that begins with "# Darwin/MacOS X". The section begins with "darwin*|macosx*)" and ends with ";;". 3. Copy that whole section and then paste it below the ";;" at the end of the section but before the "openbsd*)" starting the next section. This will be a new darwin6 section. 4. Go back to the top of the original and change "darwin*|macosx*)" to "darwin[0-5]*)". 5. Go to the top of the new darwin6 section and change "darwin*|macosx*)" to "darwin6*)". 6. In the darwin6 section, look for the line that begins with "SHLIB_XLDFLAGS=". 7. Towards the end of that line, change "$(SHLIB_MAJOR)" to "$(SHLIB_MAJOR).2". 8. The next line should read: SHLIB_LIBS='-lSystem' Change it to this: SHLIB_LIBS='-lSystem -lcc_dynamic -lncurses' 9. Save you changes, cd up one level, and then: ./configure make make install Ignore any warnings about duplicate symbols. The readline libs will now be installed in /usr/local/lib. postgres -------- 1. After untarring the source and cd into the postgres directory, do the following: cd src/include/port/darwin mv sem.h sem.orig.h echo '#include <sys/sem.h>' > sem.h cd ../../../backend/port 2. Edit Makefile.in, look for the 3 lines in the beginning section: ifeq ($(PORTNAME), darwin) OBJS += darwin/SUBSYS.o endif 3. Delete or comment out those lines and save your changes. 4. Now do the following: cd ../../.. ./configure --mandir=/usr/local/share/man --with-openssl=/usr/lib --enable-recode make make install make install-all-headers mxDateTime ---------- I had no problems with this. After untarring, cd into the egenix directory and do the following: python setup.py install To install in a Zope python, it would be: <zope>/bin/python setup.py install where <zope> is your Zope directory. psycopg ------- Finally we can compile psycopg! 1. After untarring, cd into psycopg and do the following: setenv LDFLAGS -lssl This is in tcsh, do the equivalent in your shell to set the LDFLAGS environment variable. 2. Now do this to configure: For the default Apple python: ./configure --mandir=/usr/local/share/man --with-postgres-libraries=/usr/local/pgsql/lib --with-postgres-includes=/usr/local/pgsql/include --with-mxdatetime-includes=/usr/lib/python2.2/site-packages/mx/ DateTime/mxDateTime For a Zope python: ./configure --mandir=/usr/local/share/man --with-postgres-libraries=/usr/local/pgsql/lib --with-postgres-includes=/usr/local/pgsql/include --with-mxdatetime-includes=<zope>/lib/python2.1/site-packages/mx/ DateTime/mxDateTime --with-python=<zope>/bin/python where <zope> is your Zope directory. 3. If this works: make make install That's all there is to it! ;-) Aparajita Victory-Heart Productions aparajita(a)aparajitaworld.com www.aparajitaworld.com

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RE: [Zope-dev] Integrating ZEO with Zope 2.7
by sean.upton＠uniontrib.com 03 Oct '02

03 Oct '02

+1 IMHO, Zope releases should, in this scenario, be configured by default to use a custom_zodb.py file with ClientStorage over a socket at startup, making the default config of Zope one that uses ZEO. Also, start scripts should be distributed with options to support both the following: - Zope's start script Start ZEO via ZEO's start.py, wait for confirmation of loaded storages, then start Zope's z2.py - Separate shell scripts to start each The advantage to this is the ability get access to the ZODB in automation and sysadmin scripts without taking Zope down. This should be transparent to those who don't care, unless there is a huge performance difference between directly using FileStorage, and using ClientStorage on a local socket to the same end (is the protocol overhead really that much?)... Sean -----Original Message----- From: Guido van Rossum [mailto:guido@python.org] Sent: Wednesday, October 02, 2002 11:27 AM To: zope-dev(a)zope.org Subject: [Zope-dev] Integrating ZEO with Zope 2.7 We're close to finishing a new version of ZEO, which will be released as part of the next ZODB3 release (formerly StandaloneZODB). I think this would be a good opportunity to make ZEO a standard part of Zope, starting with Zope 2.7. Advantage for users: if you download Zope, you have everything you need; you don't have to find and download a separate ZEO or ZODB release. Advantage for Zope developers: no need to test and maintain a separate ZEO release. There will still be a separate ZODB3 release, which will include ZEO. We have to do this anyway, for people who want to use ZODB outside Zope. Is there anybody who thinks this is a bad idea? (Full disclosure: Brian & Jim think it's a good idea, as long as we make sure that the ZEO that goes into the Zope 2.7 release is properly documented from the sysadmin POV, i.e. how to start/stop/configure. Of course we'll do this.) --Guido van Rossum (home page: http://www.python.org/~guido/) _______________________________________________ Zope-Dev maillist - Zope-Dev(a)zope.org http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )

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Integrating ZEO with Zope 2.7
by Guido van Rossum 03 Oct '02

03 Oct '02

We're close to finishing a new version of ZEO, which will be released as part of the next ZODB3 release (formerly StandaloneZODB). I think this would be a good opportunity to make ZEO a standard part of Zope, starting with Zope 2.7. Advantage for users: if you download Zope, you have everything you need; you don't have to find and download a separate ZEO or ZODB release. Advantage for Zope developers: no need to test and maintain a separate ZEO release. There will still be a separate ZODB3 release, which will include ZEO. We have to do this anyway, for people who want to use ZODB outside Zope. Is there anybody who thinks this is a bad idea? (Full disclosure: Brian & Jim think it's a good idea, as long as we make sure that the ZEO that goes into the Zope 2.7 release is properly documented from the sysadmin POV, i.e. how to start/stop/configure. Of course we'll do this.) --Guido van Rossum (home page: http://www.python.org/~guido/)

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