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SimpleItem objects behaving wierdly
by Nolan Darilek 28 Mar '01

28 Mar '01

I have a product which consists of 2 other objects which, though they are available via the management interface, can't be added unless they're added into a specific location. But I've noticed that, when examined within the specific location, the object type doesn't show up. And, when clicking on the object type to edit its properties, it seems to be treated like a folder and not as it is supposed to be. The product consists of 3 objects. WorkMarket is the object which stores all other objects, contains the site UI, etc. It is a folderish object with subfolders for jobs and projects. The subfolders aren't vanilla folders; they're folderish objects with a few extra methods. Despite the fact that their metatypes are different ('WorkRequestHolder' and 'ProjectHolder') they are still listed as Folder objects. Finally, there are WorkRequests and Projects. Despite the fact that these are descendants of SimpleItem, their types aren't even listed when the folder is viewed; the table cell is blank. I really didn't pay much attention to this until today, when trying to work on the management screens. Basically, I want the properties form to appear when the WorkRequest/Project is clicked on. Here is my manage_options and _properties from WorkRequest: manage_options = ( # what management options are there? {'label': 'Properties', 'action': 'manage_propertiesForm'}, {'label': 'View', 'action': ''}, # defaults to index_html {'label': 'Security', 'action': 'manage_access'}, ) _properties = ( {'id':'description', 'type':'lines', 'mode':'w'}, {'id':'classification', 'type':'string', 'mode':'w'}, {'id':'projects', 'type':'list', 'mode':'w'}, {'id':'projects', 'type':'list', 'mode':'w'}, ) Clicking on the WorkRequest does the following: 1. Takes me to a properties display with only the title property. 2. Lists my WorkRequest as a folder object ('Folder at <url>'), and not as its metatype. 3. Produces a list of tabs identical to those for the folder object. I really don't know what I'm doing wrong, or what additional information to provide. Is 'manage_propertiesForm' not the method to call to manage properties on SimpleItem objects? Or am I missing something else? What additional information can I offer to help resolve this?

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RE: [Zope] what do you use to analyze z2.log files?
by Farrell, Troy 28 Mar '01

28 Mar '01

I have to use the following 4 lines with Analog: LOGFORMAT (%S: - %u [%d/%M/%Y:%h:%n:%j] "%j %r %j" %c %b "%f" "%B") LOGFORMAT (%*S:%j ==> %j) LOGFORMAT (%*S:%j <== %j) LOGFILE /home/zope/zope/var/Z2.log The middle two prevent FTP access lines from being logged or raising errors. Troy -----Original Message----- From: Mike Renfro [mailto:renfro@tntech.edu] Sent: Wednesday, March 28, 2001 10:06 AM To: zope(a)zope.org Subject: Re: [Zope] what do you use to analyze z2.log files? On Wed, Mar 28, 2001 at 04:55:27PM +0100, tom smith wrote: > Being on a mac, I'm using to using a little app called Analog, but > it doesn't recognize the log file format. >From a google search for: zope log format z2.log http://classic.zope.org/pipermail/zope/2001-January/038150.html It's even for Analog (assuming the Mac and *nix versions are the same). -- Mike Renfro / R&D Engineer, Center for Manufacturing Research, 931 372-3601 / Tennessee Technological University -- renfro(a)tntech.edu _______________________________________________ Zope maillist - Zope(a)zope.org http://lists.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope-dev )

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RE: DTML documents killing Zope (was RE: [Zope] ZServer dying)
by Mayers, Philip J 28 Mar '01

28 Mar '01

There's nothing in the logs, and no core dump - it never actually *dies*, either: 1) The child threads die, and on the following request they respawn 2) Only one child thread dies, the parents parent gets a SIGSTOP and the process becomes unresponsive. The application is... complex. I'll try to replicate it the behaviour as a smaller sample tomorrow... Cheers, Phil -----Original Message----- From: Evan Simpson To: Mayers, Philip J; zope(a)zope.org Sent: 28/03/01 21:18 Subject: Re: DTML documents killing Zope (was RE: [Zope] ZServer dying) From: "Mayers, Philip J" <p.mayers(a)ic.ac.uk> > FYI - it appears to be the _number_ of parameters. If I call the DTML > document with 12 parameters (context,REQUEST,p0=0,...p11=11) it fails under > load, anything less than that (i.e. drop *any* one or more of the paramters) > and it's ok. Nothing shows up in the log? Is there a core dump? I can't replicate this using the latest from the 2.3 branch. Could you send me a .zexp? Cheers, Evan @ digicool

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resolving between like-named parent folders?
by Brian Withun 28 Mar '01

28 Mar '01

How would one go about the following? I have a folder hierarchy represented as shown: A B index_html C D A B index_html I would like the C.D.A.B.index_html to redirect to A.B.index_html For this, I have tried the following in C.D.A.B.index_html: <dtml-var "RESPONSE.redirect(A.B.index_html.url())"> But this only succeeds in redirecting to itself due to acquisition first finding A.B.index_html within D. How can I address Root.A.B.index_html separately from Root.C.D.A.B.index_html ? FWIW, Root.A.B.index_html won't do it, Zope.A.B.index_html won't do it, .A.B.index_html won't do it... ------------ Brián Withun

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RE: DTML documents killing Zope (was RE: [Zope] ZServer dying)
by Mayers, Philip J 28 Mar '01

28 Mar '01

Yes, I'm running a stock 2.3.0 installation *except* I made that one change to the sourcecode (otherwise the PythonScripts would take a long time to load ever 10-30 seconds. The line used to read: if getattr(self, Python_magic, None) != Python_magic: And it now reads: if getattr(self, 'Python_magic', None) != Python_magic: FYI - it appears to be the _number_ of parameters. If I call the DTML document with 12 parameters (context,REQUEST,p0=0,...p11=11) it fails under load, anything less than that (i.e. drop *any* one or more of the paramters) and it's ok. I don't know if it's some critical limit I'm hitting (like stack space or something equivalent) - I still don't know enough about Zope's internals to find out. (If you want a rootshell on the machine running it, let me know) Regards, Phil +----------------------------------+ | Phil Mayers, Network Support | | Centre for Computing Services | | Imperial College | +----------------------------------+ -----Original Message----- From: Evan Simpson [mailto:evan@4-am.com] Sent: 28 March 2001 20:22 To: Mayers, Philip J Cc: zope(a)zope.org Subject: Re: DTML documents killing Zope (was RE: [Zope] ZServer dying) From: "Mayers, Philip J" <p.mayers(a)ic.ac.uk> > I have a PythonScript (called as a Web page) which renders the HTML by > calling external DTML documents, and supplies form field variables as 10 > keyword arguments. This seems to crash Zope if called under load. If I don't > supply the keyword arguments (and of course, the field isn't filled in) then > everything is OK. Just to get this out of the way as a possible cause, if you grep PythonScript.py for "magic", does the following line have quote marks around the first 'Python_magic' (in getattr)? It should. if getattr(self, 'Python_magic', None) != Python_magic: Cheers, Evan @ digicool

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DTML documents killing Zope (was RE: [Zope] ZServer dying)
by Mayers, Philip J 28 Mar '01

28 Mar '01

Ok, I've narrowed down what is killing my Zope using the following script: import threading import httplib import sys from base64 import encodestring import string import time def getfunc(server,url,user=None,pw=None): h = httplib.HTTP(server) h.putrequest("GET",url) if user and pw: try: password = encodestring("%s:%s" % (user,pw)) password = string.replace(password,"\012","") h.putheader("AUTHORIZATION","Basic %s" % password) except: pass h.endheaders() errcode,errmsg,headers = h.getreply() if errcode != 200: print "failed: %s" % (errmsg,) print "Done thread at %s" % (time.time(),) threads = [] num_threads = 10 try: num_threads = string.atoi(sys.argv[5]) except: pass for i in range(1,num_threads): t = threading.Thread(None,getfunc,None,tuple(sys.argv[1:5]),{}) threads.append(t) t.start() for t in threads: t.join() print "%s joined at %s" % (t.getName(),time.time()) Fun for all the benchmarking family. I can do this: python floodget.py hostname:8080 /path/to/page username password 1000 And it works. However, python floodget.py hostname:8080 '/path/to/page?arg1=a&arg2=b' username password 1000 Fails very quickly. Now, the page in question is a PythonScript (hmm...) and the code that is executed when the arguments are passed renders a DTML comment using: print container.folder.dtml_method(context,context,REQUEST,key1=arg1,key2=arg2) And so on... If I comment out the above line, *it all works under load* - that is to say, it's apparently the rendering of the DTML document that is killing things... In fact, I just did some more diagnosis. It's only when I pass a lot of keyword arguments - I'm working on the threshold that triggers it now... This is all very unfortunate. So - to summarise: I have a PythonScript (called as a Web page) which renders the HTML by calling external DTML documents, and supplies form field variables as 10 keyword arguments. This seems to crash Zope if called under load. If I don't supply the keyword arguments (and of course, the field isn't filled in) then everything is OK. Weird huh? I can repro this reliably - how can I debug and diagnose it? Sven, does this fit your experience? Regards, Phil +----------------------------------+ | Phil Mayers, Network Support | | Centre for Computing Services | | Imperial College | +----------------------------------+ -----Original Message----- From: Mayers, Philip J [mailto:p.mayers@ic.ac.uk] Sent: 28 March 2001 14:18 To: 'Chris Withers'; Sven Cc: zope(a)zope.org Subject: RE: [Zope] ZServer dying No, I run: su -l zope -c 'nohup /usr/local/Zope/start -X -w 8080 &' I'm stumped. Sven, are you running Postgresql? If so, what version? Next time it dies and the process is there, try strace'ing it with "strace -p pid -d" Regards, Phil +----------------------------------+ | Phil Mayers, Network Support | | Centre for Computing Services | | Imperial College | +----------------------------------+ -----Original Message----- From: Chris Withers [mailto:chrisw@nipltd.com] Sent: 28 March 2001 13:48 To: Sven Cc: zope(a)zope.org Subject: Re: [Zope] ZServer dying Sven wrote: > > so i just have to restart zope, and some other times, it freezes but i still > can see the processes (then killal and restart). > > my developpement version does this between 1 and 10 times a day (redhat 7 / > zope 2.3.0 too) Do you run both setups with the -D option? cheers Chris _______________________________________________ Zope maillist - Zope(a)zope.org http://lists.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope-dev ) _______________________________________________ Zope maillist - Zope(a)zope.org http://lists.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope-dev )

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Re: [Zope] LOCK/UNLOCK
by Fernstrom, Christer 28 Mar '01

28 Mar '01

Looking through the mail archives I realise that I'm not the only person who has questions about locking in ZOPE. I know that you can use versions, and as long as every concurrent user does updates in a separate version, locks are set, visible to all, and prevents accidental overwrites. Problem is that users who are just content providers (not programmers) have to explicitly enter versions, then commit changes they've done in the versions. This is far from ideal. I haven't found parts of the ZOPE API that deals with handling versions, but I was playing with the idea to provide a "modify" button on the pages that would: - create a personal version for the user (unless one is already there) - start using the version - go to the manage_main for the page to allow updates - upon SAVE (hm, how do I catch this?), commit the version changes (ie do version "save") - redisplay the rendered page Looks simple on the paper. Has anybody done something like this? Would it work? christer christer.fernstrom(a)xrce.xerox.com >I am totaly baffeled by the correct usage of LOCKs in ZOPE. >Example please? > >Thanks, >-- >Tim Cook, President - FreePM,Inc. >http://www.FreePM.com Office: (901) 884-4126 >ONLINE DEMO: http://www.freepm.org:8080/FreePM

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RE: DTML documents killing Zope (was RE: [Zope] ZServer dying)
by Mayers, Philip J 28 Mar '01

28 Mar '01

Calling the DTML document with 2 positional parameters and 10 keyword args will kill it after 5-10 requests - 2 positional and 9 keyword will not. Very odd... Regards, Phil +----------------------------------+ | Phil Mayers, Network Support | | Centre for Computing Services | | Imperial College | +----------------------------------+ -----Original Message----- From: Mayers, Philip J [mailto:p.mayers@ic.ac.uk] Sent: 28 March 2001 19:55 To: 'Chris Withers'; Sven Cc: zope(a)zope.org Subject: DTML documents killing Zope (was RE: [Zope] ZServer dying) Ok, I've narrowed down what is killing my Zope using the following script: import threading import httplib import sys from base64 import encodestring import string import time def getfunc(server,url,user=None,pw=None): h = httplib.HTTP(server) h.putrequest("GET",url) if user and pw: try: password = encodestring("%s:%s" % (user,pw)) password = string.replace(password,"\012","") h.putheader("AUTHORIZATION","Basic %s" % password) except: pass h.endheaders() errcode,errmsg,headers = h.getreply() if errcode != 200: print "failed: %s" % (errmsg,) print "Done thread at %s" % (time.time(),) threads = [] num_threads = 10 try: num_threads = string.atoi(sys.argv[5]) except: pass for i in range(1,num_threads): t = threading.Thread(None,getfunc,None,tuple(sys.argv[1:5]),{}) threads.append(t) t.start() for t in threads: t.join() print "%s joined at %s" % (t.getName(),time.time()) Fun for all the benchmarking family. I can do this: python floodget.py hostname:8080 /path/to/page username password 1000 And it works. However, python floodget.py hostname:8080 '/path/to/page?arg1=a&arg2=b' username password 1000 Fails very quickly. Now, the page in question is a PythonScript (hmm...) and the code that is executed when the arguments are passed renders a DTML comment using: print container.folder.dtml_method(context,context,REQUEST,key1=arg1,key2=arg2) And so on... If I comment out the above line, *it all works under load* - that is to say, it's apparently the rendering of the DTML document that is killing things... In fact, I just did some more diagnosis. It's only when I pass a lot of keyword arguments - I'm working on the threshold that triggers it now... This is all very unfortunate. So - to summarise: I have a PythonScript (called as a Web page) which renders the HTML by calling external DTML documents, and supplies form field variables as 10 keyword arguments. This seems to crash Zope if called under load. If I don't supply the keyword arguments (and of course, the field isn't filled in) then everything is OK. Weird huh? I can repro this reliably - how can I debug and diagnose it? Sven, does this fit your experience? Regards, Phil +----------------------------------+ | Phil Mayers, Network Support | | Centre for Computing Services | | Imperial College | +----------------------------------+ -----Original Message----- From: Mayers, Philip J [mailto:p.mayers@ic.ac.uk] Sent: 28 March 2001 14:18 To: 'Chris Withers'; Sven Cc: zope(a)zope.org Subject: RE: [Zope] ZServer dying No, I run: su -l zope -c 'nohup /usr/local/Zope/start -X -w 8080 &' I'm stumped. Sven, are you running Postgresql? If so, what version? Next time it dies and the process is there, try strace'ing it with "strace -p pid -d" Regards, Phil +----------------------------------+ | Phil Mayers, Network Support | | Centre for Computing Services | | Imperial College | +----------------------------------+ -----Original Message----- From: Chris Withers [mailto:chrisw@nipltd.com] Sent: 28 March 2001 13:48 To: Sven Cc: zope(a)zope.org Subject: Re: [Zope] ZServer dying Sven wrote: > > so i just have to restart zope, and some other times, it freezes but i still > can see the processes (then killal and restart). > > my developpement version does this between 1 and 10 times a day (redhat 7 / > zope 2.3.0 too) Do you run both setups with the -D option? cheers Chris _______________________________________________ Zope maillist - Zope(a)zope.org http://lists.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope-dev ) _______________________________________________ Zope maillist - Zope(a)zope.org http://lists.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope-dev ) _______________________________________________ Zope maillist - Zope(a)zope.org http://lists.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope-dev )

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Counter Rentrancy
by David Kyte 28 Mar '01

28 Mar '01

Hi, If I have a DTML document for generating and tracking say order numbers, is the code rentrant/Atomic? <dtml-call "REQUEST.set('counter', counter + 1)"> <dtml-call "manage_changeProperties( counter=REQUEST['counter'] )"> <dtml-return counter > What I'm really asking is how many threads run in parallel, and how would multiple threads accessing this code react. Do I need some form of transation or locking? Thanks in anticipation David Kyte

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Re: [Zope] resolving between like-named parent folders?
by Oliver Bleutgen 28 Mar '01

28 Mar '01

> How would one go about the following? > I have a folder hierarchy represented as shown: > A > B > index_html > C > D > A > B > index_html > I would like the C.D.A.B.index_html to redirect to A.B.index_html You can use <dtml-var "RESPONSE.redirect(PARENTS[-1].A.B.absolute_url())"> There are some really good explanations of PARENTS out there if you're interested. cheers, oliver

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