February 2006 - Zope

how to modify documents creation date
by zenobito zenobito 05 Feb '06

05 Feb '06

Hello, I need to modify the creation date of several documents: most of them a news, so I have to insert/modify to make them appear to bo created some time ago. Someone told me it can't be done in plone or zmi, but using scripting: ok, I believe it, but I think it's quite strange that no one else had to insert an old (forgotten) news in a plone site. Thanks in advance. zenobito. p.s.: I have zope 2.7.2, plone 2.0.5, ubuntu linux.

4 3

Re: [Zope] Product refreshing in Zope 2.9
by Peter Bengtsson 03 Feb '06

03 Feb '06

On 1/30/06, Andreas Jung <lists(a)andreas-jung.com> wrote: > > > --On 30. Januar 2006 17:39:11 +0000 Peter Bengtsson <peter(a)fry-it.com> > wrote: > > > > It's not a strange product. It's quite simple in fact. > > Not being able to refresh without restarting means that I can't use > > Zope 2.9 for python product development. > > Why is refresh a requirement for doing Zope development? I am doing Zope > development since five or six years and I have never done any development > using Refresh...so there must be something very special with your > development approach?! > Sorry. It's not a _requirement_. But without it I loose productivity. (see my previous email on this topic with the human benchmark, ValueErrors and lost SESSIONS). I too have several years of zope programming beyond the ZMI and have developed many products and refreshing is the only way I know to quickly test changes. Having to wait a few seconds for each test is not an option. How do you solve this problem without refreshing? Or are you ready to wait for the zope restart and avoid it by writing more unit tests? -- Peter Bengtsson, work www.fry-it.com home www.peterbe.com hobby www.issuetrackerproduct.com

8 18

ZEO disconnects, Zope auto restarts (via zopectl)
by Dennis Allison 03 Feb '06

03 Feb '06

Zope 2.9.0 We are seeing spontaneous restarts of Zope with no indication in any of the standard Zope logs. Looking at the ZEO log indicates that the restarts of Zope are due to a lost connection between Zope & ZEO but with no other information. The logging level is set at the distribution default (INFO). The restarts are a huge problem because session variables are not persistent and so all of the user state they contain is lost on restart. In our statful implementation, this is a major problem. I want to adjust the configuration so that the Zope/ZEO connection is stable. In our configuration, Zope and ZEO are linked via localhost on a distinguished port. I've Googled about looking for some infomation about tuning the ZEO/Zope interface, but have found little real information. Some additional log detail would be helpful. We are running a fairly vanilla setup, excerpted below: <<zope.conf>> # ZEO client storage: # <zodb_db main> mount-point / # ZODB cache, in number of objects cache-size 5000 <zeoclient> server localhost:8301 storage 1 var $INSTANCE/var # ZEO client cache, in bytes cache-size 20MB # Uncomment to have a persistent disk cache client group1-zeo </zeoclient> </zodb_db> <<zeo.conf>> <zeo> address localhost:8301 read-only false invalidation-queue-size 100 pid-filename $INSTANCE/var/ZEO.pid # monitor-address PORT # transaction-timeout SECONDS </zeo> <runner> program $INSTANCE/bin/runzeo socket-name $INSTANCE/etc/zeo.zdsock daemon true forever false backoff-limit 10 exit-codes 0, 2 directory $INSTANCE default-to-interactive true # user zope python /usr/bin/python2.4 zdrun /usr/local/src/zope/Zope2.9/lib64/python/zdaemon/zdrun.py # This logfile should match the one in the zeo.conf file. # It is used by zdctl's logtail command, zdrun/zdctl doesn't write it. logfile $INSTANCE/log/zeo.log </runner> It's not clear what changes will lead to a more stable connection because it is not clear what's triggering the problem. Any advice would be appreciated. Presumably the shotgun approach would work -- increase the cache sizes, lengthen the invalidation-queue-size, and increase the backoff-limit but it would be nice to have some guidance. 5~

4 5

inheritance and aqusition question
by Roman Klesel 03 Feb '06

03 Feb '06

Hello, im just learning zope and python and find it difficult to get the details of aquisition and inheritance. I have the following problem: (FS product) My base class has an attribute manage_editSettingsForm In its __init__ method I instantiate a contoller class. In the methods of the controller class can access self.manage_edtiSettingsForm (fine) Now I instantiate a importSingle class in a method of the controller class. In the methods of the importSingle class I cannot access self.manage_edtiSettingsForm (why?) Controller class: from Acquisition import Implicit from Globals import InitializeClass, Persistent from Products.PythonScripts.Utility import allow_class, allow_module from AccessControl import ClassSecurityInfo from OFS.SimpleItem import SimpleItem from OFS.ObjectManager import ObjectManager from Products.BTreeFolder2.BTreeFolder2 import BTreeFolder2 from Lasttest import Lasttest import sys, os, urllib, commands, re, types import LTimport allow_module=('Controller') class Controller(Implicit,ObjectManager, SimpleItem): --------------------- importSingle Class: from Globals import InitializeClass from Acquisition import Implicit import os,re class importSingle(Implicit): I tried subclassing form SimpleItem and ObjectManager but it didn't work. What is required that inheritance will work? Greetings Roman

3 4

raw trace log format
by Dennis Allison 03 Feb '06

03 Feb '06

generally it's code id fromepoch desc The desc field is B request (e.g. 'GET /') I ??? A status_code bytes E The desc for E is normally empty. The desc for I is usually 0 or a small integer. Google could not help me find a definition for the desc value associated with I. Can someone assist? --

4 4

Multiple Zope Instance
by Infor Gates 03 Feb '06

03 Feb '06

Dear zopist I am using Zope 2.8.4 on windows. I have installed and created a zope instance-1 which run as a service in WindowXP. Later, I created a 2nd zope instance-2 by mkzopeinstance. How can I configure zope to run zope instance-2 as the default service instead of instance-1? Thanks alot. CY --------------------------------- Brings words and photos together (easily) with PhotoMail - it's free and works with Yahoo! Mail.

2 2

Re: Contents of Zope digest
by Khachatur Yengibaryan 03 Feb '06

03 Feb '06

zope-request(a)zope.org wrote: >Send Zope mailing list submissions to > zope(a)zope.org > >To subscribe or unsubscribe via the World Wide Web, visit > http://mail.zope.org/mailman/listinfo/zope >or, via email, send a message with subject or body 'help' to > zope-request(a)zope.org > >You can reach the person managing the list at > zope-owner(a)zope.org > >When replying, please edit your Subject line so it is more specific >than "Re: Contents of Zope digest..." > > >Today's Topics: > > 1. Re: Zope development tutorial (Re: [Zope] Re: Product > refreshing in Zope 2.9) (Tim Nash) > 2. raw trace log format (Dennis Allison) > 3. Re: raw trace log format (Tres Seaver) > 4. Re: Re: raw trace log format (Dennis Allison) > 5. Re: Re: raw trace log format (Chris McDonough) > 6. Re: LocalFS (Dieter Maurer) > 7. Re: Ignore stopwords/characters in alphabetical results > (Dieter Maurer) > 8. TextIndexNG2 problems (Barry Drake) > 9. Multiple Zope Instance (Infor Gates) > 10. Re: TextIndexNG2 problems (Andreas Jung) > 11. ZEO disconnects, Zope auto restarts (via zopectl) (Dennis Allison) > 12. Re: Zope development tutorial (Re: [Zope] Re: Product > refreshing in Zope 2.9) (Lennart Regebro) > 13. inheritance and aqusition question (Roman Klesel) > 14. Re: Zope development tutorial (Re: [Zope] Re: Product > refreshing in Zope 2.9) (ardo) > 15. Re: inheritance and aqusition question (Andrew Milton) > 16. Re: inheritance and aqusition question (Roman Klesel) > 17. Re: inheritance and aqusition question (Andrew Milton) > 18. Silva Performance isses - Memory Error & Broken Pipe > (Jonathan Bowlas) > > >---------------------------------------------------------------------- > >Message: 1 >Date: Thu, 2 Feb 2006 11:50:26 -0800 >From: Tim Nash <thedagdae(a)gmail.com> >Subject: Re: Zope development tutorial (Re: [Zope] Re: Product > refreshing in Zope 2.9) >To: Dieter Maurer <dieter(a)handshake.de> >Cc: zope(a)zope.org >Message-ID: > <75c632a00602021150m734d7565p96e8049052a3d185(a)mail.gmail.com> >Content-Type: text/plain; charset=ISO-8859-1 > > > >>The things that tie together are Zope itself and larger frameworks >>on top of it, such as e.g. the CMF or Plone/CPS/Silva. >> >> >Do you mean that nobody actually writes an application without using >CMF or Plone/CPS/Silva? If that is the case then that explains my slow >rate of development. But I wonder if I want to continue with zope. It >looks like a cool application server, I have written an application >(slowly) and I was hoping that I could see better examples of how to >write a complete application. There is very little on sourceforge. >I have read the "zope bible" cover to cover and I have read most of >the zope book, but I admit that I haven't read the developer book. ( >hate reading large amounts of text online). I guess that is my future. > >As for a specific question. Here goes: > Could I please get a Zope application written by someone who has > >2 years of Zope experience that uses several dtml or zpt pages, that >1. registers a user 2. collects data from a user and saves that data >to the zodb 3. manages the accumulation of data in the zodb? If it was >developed outside the zmi (I hope) can you also send me the associated >test framework? > >Thanks! > >On 2/1/06, Dieter Maurer <dieter(a)handshake.de> wrote: > > >>Tim Nash wrote at 2006-1-31 11:48 -0800: >> >> >>>... >>>I have "completed" my first zope >>>product and I find that the change in mindset is the biggest >>>challenge. Zope is cool but it is quite different from php or java or >>>cgi. >>> >>> >>Have you read the "Zope Developper Guide"? >> >>It is something like a basic guide to product development in Zope 2. >> >> >> >>>... >>>I have downloaded many of the products from >>>zope.org but they really don't tie everything togather. >>> >>> >>"Products" are extensions that try to have very few dependancies. >>Therefore, they try not to tie other things together but use >>only services of Zope (which is always available). >> >>The things that tie together are Zope itself and larger frameworks >>on top of it, such as e.g. the CMF or Plone/CPS/Silva. >> >> >> >>>I am looking >>>for something that covers login in users, >>> >>> >>Look for the product "PAS" (PluggableAuthenticationService). >> >> >> >>>building tables out of data >>>stored in zodb, >>> >>> >>There is a product "TinyTables" (or similar) for (as the name tells you) >>"tiny" tables. >> >>Zope does not (yet) support large tables (it is not a relational database). >>But, you can use the "ZCatalog" to search your objects. >>Read the "searching" chapter in the Zope Book (Online, 2.7 edition). >> >> >> >>>... >>>getters and setters for objects in the zodb, >>> >>> >>There is no difference in attribute access for persistent objects >>(those in the ZODB) and standard Python objects. >> >>Read the Python tutorial. >> >> >> >>>collecting a variable in one page and passing it on to another page >>> >>> >>You have the standard HTML facility (e.g. query string and hidden variables; >>function in "ZTUtils.Zope" help you in using them) and >>you have sessions (explained in the Zope Book; read it!) >> >> >> >>>where it modifies the data display, working with Sessions, etc. I >>>guess what I'm looking for is a template for a real application, not >>>for the individual pieces of functionality. >>> >>> >>I guess, you read the resources mentioned above ("Zope Developper Guide" >>and "Zope Book, 2.7 edition, online") and then come back with concrete >>questions. >> >>Maybe, you then write the tutorial you are looking for now -- to >>the profit of future new Zope users... >> >>-- >>Dieter >> >> >> > > >------------------------------ > >Message: 2 >Date: Thu, 2 Feb 2006 12:19:40 -0800 (PST) >From: Dennis Allison <allison(a)shasta.stanford.edu> >Subject: [Zope] raw trace log format >To: zope(a)zope.org >Message-ID: > <Pine.LNX.4.44.0602021205470.18962-100000(a)shasta.stanford.edu> >Content-Type: TEXT/PLAIN; charset=US-ASCII > > >generally it's > > code id fromepoch desc > >The desc field is > > B request (e.g. 'GET /') > I ??? > A status_code bytes > E > >The desc for E is normally empty. The desc for I is usually 0 >or a small integer. Google could not help me find a definition >for the desc value associated with I. Can someone assist? > > > > >

3 3

Silva Performance isses - Memory Error & Broken Pipe
by Jonathan Bowlas 03 Feb '06

03 Feb '06

Hi All, We're running Silva 1.4.1 on the following setup - Zope 2.7.8-final, python 2.3.5 and linux2 but have been experiencing some major performance issues that I'm hoping someone may be able to help me resolve. Having checked the Zope log I noticed it contained a number of concerning entries such as: ------ 2006-01-25T21:08:11 ERROR(200) ZODB Couldn't load state for 0x016b87 Traceback (most recent call last): File "/usr/local/zope-2.7.8/lib/python/ZODB/Connection.py", line 597, in setstate p, serial = self._storage.load(oid, self._version) File "/usr/local/zope-2.7.8/lib/python/ZODB/FileStorage.py", line 697, in load return self._load(oid, version, self._index, self._file) File "/usr/local/zope-2.7.8/lib/python/ZODB/FileStorage.py", line 688, in _load return read(u64(plen)), serial MemoryError ------ 2006-01-25T21:08:19 ERROR(200) ZODB Couldn't load state for 0x028179 Traceback (most recent call last): File "/usr/local/zope-2.7.8/lib/python/ZODB/Connection.py", line 600, in setstate self._set_ghost_state(obj, p) File "/usr/local/zope-2.7.8/lib/python/ZODB/Connection.py", line 639, in _set_ghost_state state = unpickler.load() MemoryError ------ And these: 2006-01-25T20:45:18 ERROR(200) ZServer uncaptured python exception, closing channel <ZServer.HTTPServer.zhttp_channel connected 144.82.100.130:43419 at 0xb0bb9f8c channel#: 1355352 requests:> (exceptions.MemoryError: [/usr/local/lib/python2.3/asyncore.py|write|77] [/usr/local/lib/python2.3/asyncore.py|handle_write_event|397] [/usr/local/lib/python2.3/asynchat.py|handle_write|152] [/usr/local/lib/python2.3/asynchat.py|initiate_send|213] [/usr/local/lib/python2.3/asynchat.py|refill_buffer|202]) ------ 2006-01-25T20:47:12 ERROR(200) ZServer uncaptured python exception, closing channel <ZServer.HTTPServer.zhttp_channel connected 128.40.105.130:59791 at 0xb0b69fec channel#: 1355791 requests:> (exceptions.MemoryError: [/usr/local/lib/python2.3/asyncore.py|write|77] [/usr/local/lib/python2.3/asyncore.py|handle_write_event|397] [/usr/local/lib/python2.3/asynchat.py|handle_write|152] [/usr/local/lib/python2.3/asynchat.py|initiate_send|220]) And this (Although having googled the error I'm pretty sure its nothing to worry about. But I could easily be wrong as I'm fairly new to zope): 2006-01-25T17:06:08 ERROR(200) ZServer uncaptured python exception, closing channel <ZServer.HTTPServer.zhttp_channel connected 128.40.105.130:58015 at 0xae8046ec channel#: 1281272 requests:> (socket.error:(32, 'Broken pipe') [/usr/local/lib/python2.3/asynchat.py|initiate_send|218] [/usr/local/zope-2.7.8/lib/python/ZServer/medusa/http_server.py|send|417] [/usr/local/lib/python2.3/asyncore.py|send|337]) I've attached the log file, although I don't know if this list accepts attachments. Hopefully someone will be able to identify the problem and provide a solution for improving performance or alternatively provide a list of procedures I can carry out to locate the problem myself. Many Thanks. Jon Bowlas University College London.

2 1

LocalFS
by Rakotomandimby Mihamina 02 Feb '06

02 Feb '06

Hi, In order to learn developping for Zope, I want to learn manipulate large files. I read it is not a good idea to store them in the ZODB, so that it couls be a good idea to use LocalFS for example. I intend to use Zope2.9. But LocalFS seems to be an old product. Is there any replacement of it you would know? -- A powerfull GroupWare, CMS, CRM, ECM: CPS (Open Source & GPL). Opengroupware, SPIP, Plone, PhpBB, JetSpeed... are good: CPS is better. http://www.cps-project.org for downloads & documentation. Free hosting of CPS groupware: http://www.objectis.org.

4 3

main Zope 3 benefits
by michael nt milne 02 Feb '06

02 Feb '06

Hi Is there a page anywhere which lists the main benefits of Zope 3? I've had a look around and there is lots of developer information but not so much for the site manager/producer -- Michael

3 3