- Zope - Zope lists

Proposal for mail-in to Zope
by Simon Coles 05 Jun '00

05 Jun '00

Hi, We (NIP - in the form of Chris Withers, Stephen Harrison, and Simon Coles) have put some thought into the question of how to get emails into Zope, and have come up with a design which we thought we'd pass by the list before we start doing something. The problem we are trying to solve is basically being to email "something(a)myserver.me.com" and that email ends up in the Zope ZODB processed in whatever way is appropriate. We aren't worried about sending email, that's done well at the moment. We also wanted to keep things as simple and quick as possible :-) This means trying to avoid getting involved with mail systems as much as we can. Most MTAs can be setup to pass an email to the stdin of a program. Sendmail will do this, and Exim (http://www.exim.org/) will also pay attention to what that program returns and queue the message for re-try later if it fails. So using Exim, we don't have to get into any messy stuff about queuing mails if the Zope server is down. Some alternatives we considered and didn't go for: - write something in Zope to listen for SMTP connections, effectively large portions of an MTA. This would be cool but painful. - pull mail from a POP or IMAP server. This had the downside that it introduced polling into the system (slow) and also required something to happen on a schedule, which doesn't happen in Zope yet. So: - Within Exim, use the "pipe" transport to get email for a particular host sent to a program on the standard input. If the program called returns certain codes then Exim will queue the message and try again. - This program takes the email message and puts it into Zope, probably by calling a DTML Method or something. This would probably be configured by objects in the Zope ZODB which say effectively "When you get email for this address, then call this Method". - The DTML Method is responsible for doing the right things to get the email message into the ZODB in whatever form is appropriate. We haven't yet figured out how to make sure the above mail handling program can find all the relevant configuration documents. Is there some way of efficiently finding all instances of a particular ZClass? (Chris W. still isn't sure that's how the configuration will work but that's the plan for the moment, so any thoughts would be appreciated) What we'll do is a first version that hard codes everything in the above script and prove the principle of the thing, and then move onto the configuration. Does this sound like what people need? Any thoughts, comments, warnings? I don't know yet what kind of schedule we'll be able to do this on but drop me a mail and when there's something to play with we'll let you know. Simon -- --------- My opinions are my own, NIP's opinions are theirs ---------- Simon J. Coles Email: simon(a)nipltd.com New Information Paradigms Work Phone: +44 1344 753703 http://www.nipltd.com/ Work Fax: +44 1344 753742 =============== Life is too precious to take seriously ===============

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Q: Namespace, Acquisition, and Properties
by Wilkinson Charlie E 05 Jun '00

05 Jun '00

Greetings, I've dug around, but not found (or not grokked) the solution to this particular puzzle. Could someone more knowledgeable provide a little enlightenment? In the top level folder (root) I have a dtml method title template that contains html code and dtml vars that are (intended to be) populated by properties of various subfolders as well as a value or two passed directly. The title template is "called" from dtml methods in the root and sub-folders using something like: <dtml-var "title_block(app_screen = 'Main Screen')"> I have no problem getting at the title template from any of the dtml methods. (Thanks to acquistion, yes?) However, I get Zope KeyErrors indicating that the title template is not seeing the sub-folder properties in its namespace, when I plug the above code into a dtml method contained in one of those sub- folders. Here's the title_block code: <CENTER> <table border=1 <dtml-if "_.has_key('titleblock_bg')"> bgcolor="<dtml-var titleblock_bg>" <dtml-else> bgcolor="#111155" </dtml-if> > <TR><TD align=center> <FONT size=7 <dtml-if "_.has_key('title_fg')"> color="<dtml-var title_fg>" <dtml-else> color="#009900" </dtml-if> ><dtml-var app_title></FONT><BR> <FONT size=4 <dtml-if "_.has_key('subt_fg')"> color="<dtml-var subt_fg>" <dtml-else> color="#009900" </dtml-if> ><dtml-var app_subt></FONT><HR> <FONT size=5 <dtml-if "_.has_key('screen_fg')"> color="<dtml-var screen_fg>" <dtml-else> color="#009900" </dtml-if> ><dtml-var app_screen></FONT> </TD></TR> </TABLE> </CENTER> (Ok, try not to laugh too hard - I'm Zope newbie...) Some values above are optional (the has_key stuff). Values like app_screen may be passed explicitly as literals. The rest (like app_title) was intended to be grabbed from the folder/sub-folder properties I set up for that purpose. So, two questions: 1. Is there a simple way to pass the appropriate sub-folder properties namespace from a dtml method contained in that sub-folder to the title_block dtml method contained in the root folder? An example would be tremendously helpful. 2. Is there a better way to do what I'm trying to do? Thanks for any help, Charlie -- Charlie Wilkinson - TRIS Development Systems Administrator IS:SD:CT:CC:TD Phone: 202-283-3241 MSMail: <mailto:Charlie E Wilkinson> Charlie E Wilkinson SMTP: <mailto:cwilkins@tris.irs.gov> cwilkins(a)tris.irs.gov Home: <outbind://7/cwilkins@boinklabs.com> cwilkins(a)boinklabs.com This message constructed from 90% post-consumer electrons.

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another zope site gone...
by Peter Sabaini 05 Jun '00

05 Jun '00

...finally online! http://druck.kleinezeitung.at/ now holds the 'as printed' version of the 'Kleine Zeitung', one of the bigger austrian newspapers. doing the zope part was the fun bit... thanks to DC for a great product and to the list for real good ressources. hope i get management to adopt zope as our primary platform! ru, peter sabaini. -- _________________________________________________ peter sabaini, mailto: sabaini(a)niil.at -------------------------------------------------

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another nice error-message
by Andy Pahne 05 Jun '00

05 Jun '00

<humor> I replaced the standard_error_message whth <dtml-fortune>. Now I'm havin much fun everytime some obscure error occurs. I highly recommend, you developers do the same, not only for you but for your visitors as well.... </humor> Andy Pahne ap@net22 net22 GmbH Bad Meinberger Strasse 1 32760 Detmold Tel.: 05231 - 580 640

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New Product - old error
by gresham＠mediavisual.com 05 Jun '00

05 Jun '00

Hi All, I hope someone can help, I'm about to tear my hair out and toss my PC out of the window. I am basically trying to make my own Image class, by copying the one in OFS and renaming a few bits and bobs. In a frenzy of broken products, I copied one of the supporting classes from OFS to my new dir OffS (original huh?) quickly realizing I should just change the code. Thus: *Copy PropertyManager.py from OFS to OffS (my new dir). *Restart Zope *Get an error (Can't find ZDOM) *Oh didn't want to do that, delete PropertyManager.py from OffS *Change my OffImage.py - from OFS.PropertyManager import PropertyManager *Restart Zope *Same Broken product, Same error Traceback (innermost last): File "/usr/local/Zope-2.1.6-linux2-x86/lib/python/OFS/Application.py", line 387, in import_products product=__import__(pname, global_dict, global_dict, silly) File "/usr/local/Zope-2.1.6-linux2-x86/lib/python/Products /OffSP/__init__.py", line 5, in ? import OffS.OffImage #, OFS.Folder, AccessControl.User File "/usr/local/Zope-2.1.6-linux2-x86/lib/python/OffS/OffImage.py", line 8, in ? from PropertyManager import PropertyManager File "/usr/local/Zope-2.1.6-linux2-x86/lib/python/OffS/ PropertyManager.py", line 90, in ? import ZDOM ImportError: No module named ZDOM *Ok, I thought, Netscrape must be caching the page, clear all the cached files *Same problem *Ok Netscrape, I'll use lynx instead *Same problem *Now going RRM (Random Resolution Mode) and getting nowhere. Checked the code for the Umphteenth time, it is definitely not the piece of code in the error message *Tried deleting PYC etc, but still no joy! *Waaah Boo hoo, It's beating me I'm about to delete every PYC in the Zope dir see what happens, Can anyone help! >From the stuck-in-a-room-with-doors-and-windows dept -Gresh

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Zope LDAP Browser/Editor
by Pierre-Julien Grizel 05 Jun '00

05 Jun '00

Hi, I wrote in my spare time a LDAP browser with Zope. You can try it at www.xlogx.org/Zygopetale (it's available in french & english). You can try it with the default parameters or with an LDAP database of your own (with write access ?...). Please don't rely on my server's speed, it's hidden behind a 64k ISDN connexion. BTW, if someone wants to host it with a better sever, I do agree ! It took... say... 20 hours to learn LDAP and to build the whole tool (with its current limitations). Zope is actually a very very very powerful web server. P.-J.

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Zope NT service Vs data_dir
by julio dinis 05 Jun '00

05 Jun '00

Hi zopers :-) I've hacked globals.py to change the var data_dir to point to a shared disk I have. I restarted zope and the Globals.pyc was compiled. Zope runs ok but only from the command line. The Zope Service it is no more :-( When I start it the process tries to live but want go further than 2Mb memory not starting zope :-( Any help? Thanxs Júlio Dinis Silva ________________________________________________________________________ Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com

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ZClass question
by Jerome Alet 05 Jun '00

05 Jun '00

Hi, I'm currently trying to store all of the Medicine School (I work for) events in Zope, using the Calendar product to store them. I've created from my browser a Zclass which has a propertysheet and some properties in it, and some DTML methods. I've called this class GenericEvent. I want to create 4 or five other Zclasses which only differ from the first one by their meta type and the value (not the name) of one of their properties. For example I want to create ExamEvents, CoursesEvents, and so on... Then I want to give permissions to some people to add some type of events in the database. For example I want John to be able to add (and delete) both GenericEvents and ExamEvents, while I want Jane to only be allowed to add CoursesEvents, and not be allowed to delete CoursesEvents she hasn't created. I've created my GenericEvent ZClass and it works fine, thanks to Jason Spisak, but now when I try to create other ZClasses deriving from this ZClass I can't choose it as the base class for the new classes. Can I do that from my browser (How ?) or must I do it in python ? If it's not possible I plan to add the event type as a property of GenericEvent, but then how can I deal with the different permissions I need ? thanks in advance for any hint. Jerome ALET - alet(a)unice.fr - http://cortex.unice.fr/~jerome Faculte de Medecine de Nice - http://noe.unice.fr - Tel: 04 93 37 76 30 28 Avenue de Valombrose - 06107 NICE Cedex 2 - FRANCE

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Re: [Zope] Proposal for mail-in to Zope
by Cary O'Brien 05 Jun '00

05 Jun '00

> Hi, > > We (NIP - in the form of Chris Withers, Stephen Harrison, and Simon > Coles) have put some thought into the question of how to get emails > into Zope, and have come up with a design which we thought we'd pass Excellent idea. I was thinking about this just the other day. We have a mailing list for a project, and it would be nice to drop in an email archive into the zope site we are using internally. > by the list before we start doing something. > > The problem we are trying to solve is basically being to email > "something(a)myserver.me.com" and that email ends up in the Zope ZODB > processed in whatever way is appropriate. > > We aren't worried about sending email, that's done well at the > moment. We also wanted to keep things as simple and quick as possible > :-) This means trying to avoid getting involved with mail systems as > much as we can. > > Most MTAs can be setup to pass an email to the stdin of a program. > Sendmail will do this, and Exim (http://www.exim.org/) will also pay > attention to what that program returns and queue the message for > re-try later if it fails. So using Exim, we don't have to get into > any messy stuff about queuing mails if the Zope server is down. > > Some alternatives we considered and didn't go for: > - write something in Zope to listen for SMTP connections, effectively > large portions of an MTA. This would be cool but painful. I'd have to agree. > - pull mail from a POP or IMAP server. This had the downside that it > introduced polling into the system (slow) and also required something > to happen on a schedule, which doesn't happen in Zope yet. > Here I'd have to disagree. I would definately include polling of a POP box as a way to get mail into the system. Not everyone has a 24x7 internet connection with a fixed ip address and a dns entry, so for them polling a POP box would be a great way to handle things. Plus it is great for those people picky about security that don't let anything inward across the firewall. Ok, so you could set up fetchmail to poll the pop box and redeliver locally, but that is a lot of setup. And isn't there a ZScheduler that will schedule operations in the future? And there is that nice python pop client interface. > So: > - Within Exim, use the "pipe" transport to get email for a particular > host sent to a program on the standard input. If the program called > returns certain codes then Exim will queue the message and try again. > I think you can do this with sendmail by putting "|command" in .forward. > - This program takes the email message and puts it into Zope, probably > by calling a DTML Method or something. This would probably be > configured by objects in the Zope ZODB which say effectively "When > you get email for this address, then call this Method". > > - The DTML Method is responsible for doing the right things to get > the email message into the ZODB in whatever form is appropriate. > One thing I don't understand is how many processes can access a live ZODB. How does the locking work? Otherwise you'd need to have your mail processor command do an html get or post to get the information into Zope. > We haven't yet figured out how to make sure the above mail handling > program can find all the relevant configuration documents. Is there > some way of efficiently finding all instances of a particular ZClass? > > (Chris W. still isn't sure that's how the configuration will work but > that's the plan for the moment, so any thoughts would be appreciated) > > What we'll do is a first version that hard codes everything in the > above script and prove the principle of the thing, and then move onto > the configuration. > > > Does this sound like what people need? Any thoughts, comments, warnings? > > The nice thing would be have a nice class for storing mail (either in the ZODB or an RDBMS), and a couple of ways to feed it (.forward with a pipe for sendmail, whatever for exim..). That way people can work with mail no matter how it was dumped into the system. An advantage is that adding a POP client would allow you to create a POP mail reader using zope also. Just a thought. -- cary cobrien(a)radix.net > I don't know yet what kind of schedule we'll be able to do this on > but drop me a mail and when there's something to play with we'll let > you know. > > > > > Simon > -- > --------- My opinions are my own, NIP's opinions are theirs ---------- > Simon J. Coles Email: simon(a)nipltd.com > New Information Paradigms Work Phone: +44 1344 753703 > http://www.nipltd.com/ Work Fax: +44 1344 753742 > =============== Life is too precious to take seriously =============== >

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import-export
by Ronnie 05 Jun '00

05 Jun '00

Hi, My Little Problem : I have zope version 2.1.6 running on two servers. I have a folder containing dtml methods and zsqlmethods which I want to import from server A to server B It doesn't work. It used to work, but not any more. this is the error it throws... File /usr/local/Zope-2.1.6-linux2-x86/lib/python/OFS/ObjectManager.py, line 484, in manage_importObject (Object: ElementWithAttributes) File /usr/local/Zope-2.1.6-linux2-x86/lib/python/ZODB/ExportImport.py, line 266, in importFile ExportError: (see above) Help Regards Ronnie

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