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What can cause an InvalidObjectReference?
by kosh 24 Aug '01

24 Aug '01

When a product I have was stuck on a windows server this seems to happen a lot. On the unix servers I have been running the product on normally this seems to happen about once/week under pretty heavy usage. This is the error message Error Type: InvalidObjectReference Error Value: Attempt to store an object from a foreign database connection This is the traceback for it Traceback (innermost last): File D:\ZOPE1\lib\python\ZPublisher\Publish.py, line 223, in publish_module File D:\ZOPE1\lib\python\ZPublisher\Publish.py, line 187, in publish File D:\ZOPE1\lib\python\Zope\__init__.py, line 221, in zpublisher_exception_hook File D:\ZOPE1\lib\python\ZPublisher\Publish.py, line 175, in publish File D:\ZOPE1\lib\python\Zope\__init__.py, line 235, in commit File D:\ZOPE1\lib\python\ZODB\Transaction.py, line 300, in commit File D:\ZOPE1\lib\python\ZODB\Connection.py, line 375, in commit (Info: (('Products.CompoundDoc.inputtext', 'InputText'), '\000\000\000\000\000\000-t', '')) InvalidObjectReference: (see above) I am mostly wondering what kinds of things in my code could cause this problem. Mostly I need a place to start to try and debug this. The "fix" I have normally used is that if I hit refresh the problem will go away until it happens again. It just allows you to keep working with it again until whatever it is that causes it causes it again. I hope that helps some also. Thanks Kosh

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uncatchable 'Bad Request' exceptions ?
by Florent Guillaume 24 Aug '01

24 Aug '01

I guess this is the better place to ask this. Zope 2.3.3, python 1.5.2. >From a python script I can't seem to catch a 'Bad Request' exception. This doesn't work: # script1 raise 'Bad Request', 'foo' # script2 try: context.script1() except 'Bad Request', x: return x return 'nothing' I get a Zope error: Error Type: Bad Request Error Value: foo But the following one works... # script1 raise 'bar', 'foo' # script2 try: context.script1() except 'bar', x: return x return 'nothing' And this one too... # script1 raise 'Bad Request', 'foo' # script2 try: context.script1() except: return 'something' return 'nothing' Anyone has an idea ? The exception is raised by another product which I don't want to touch (CMF RegistrationTool), and I think I should be able to catch them ! Florent Guillaume Nuxeo

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unittest best-practices with Zope.
by Erik Enge 24 Aug '01

24 Aug '01

Bonjour, I'm wondering, when testing big zope applications, with a lot of interdependencies (say, you need to create object A before creating B), and in the spirit of _unit_ tests, do one let all the tests run and then pull a serious tearDown at the end of the suite to delete/clean up? Or does on set up everything for each test?

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pthreads and BSD
by Giorgos Verigakis 24 Aug '01

24 Aug '01

Hello, I was having some problems on Zope's perfomance on FreeBSD and OpenBSD. I've sent some mails to zope/freebsd-hackers and openbsd-tech but I couldn't get any usefull info. To summarize, I've written a small program (see below) that makes a lot of requests to Zope. While on Linux I didn't have any problems, on FreeBSD and OpenBSD it slowed Zope down and when I tried to access some page from my browser it would make even more than 5 minutes to load. I tried this with both 2.3.3 and 2.4.0 + HotFix. Now, when I compile python 2.1.1 with PTH instead of pthreads, the problem is solved and Zope responses normally. So, is this a bug on Free/OpenBSD's libc_r or is it Zope's? (I tried FreeBSD 4.3-Release, FreeBSD 4-stable and OpenBSD 2.9-Release) Giorgos Verigakis PS: please cc me, because I'm not on this list --------------------- 8< --------------------- #include <stdio.h> #include <stdlib.h> #include <unistd.h> #include <sys/types.h> #include <sys/socket.h> #include <netinet/in.h> #include <netdb.h> int main(int argc, char *argv[]) { struct sockaddr_in sa; struct hostent *hp; int s, c; int i, t, len; unsigned long sleeptime; char request[128]; char *url="/foo"; if (argc != 4) { printf("Usage: %s <host> <port> <rate>\n", argv[0]); printf("rate in hits/sec\n"); exit(1); } if ((hp = gethostbyname(argv[1])) == NULL) { printf("error looking up host\n"); exit(1); } sprintf(request, "GET %s HTTP/1.0\015\012\015\012", url); len = strlen(request); sleeptime = (1 / atof(argv[3])) * 1000000; bzero(&sa, sizeof(sa)); bcopy(hp->h_addr, (char *)&sa.sin_addr, hp->h_length); sa.sin_family = hp->h_addrtype; sa.sin_port = htons(atoi(argv[2])); for (i = 0;; i++) { if (( s = socket(hp->h_addrtype, SOCK_STREAM, 0)) < 0) { printf("Socket error\n"); continue; } if (c = connect(s, (struct sockaddr *) &sa, sizeof sa) < 0) { printf("Connection error\n"); close(s); continue; } t = write(s, request, len); printf("i=%d: %d bytes\n", i, t); usleep(sleeptime); close(c); close(s); } } --------------------- 8< ---------------------

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another DateTime bug ?
by Steve Alexander 24 Aug '01

24 Aug '01

Again, I'm in a GMT+1 timezone. This time, I'm surprised that the GMT+0 timezone is considered different than the GMT timezone. I'd have thought they would be just the same. >>> from DateTime.DateTime import DateTime >>> a=DateTime('2000/08/20').pCommonZ() >>> b=DateTime('2000-08-20').pCommonZ() >>> c=DateTime('2000/08/20 GMT').pCommonZ() >>> d=DateTime('2000/08/20 GMT+0').pCommonZ() >>> >>> a 'Aug. 20, 2000 12:00 am GMT+1' >>> b 'Aug. 20, 2000 12:00 am GMT+0' >>> c 'Aug. 20, 2000 12:00 am GMT' >>> d 'Aug. 20, 2000 12:00 am GMT+0' >>> >>> b==c 0 >>> b==d 1 Here, I'd expect b==c to evaluate as true. Bug or feature? -- Steve Alexander Software Engineer Cat-Box limited

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DateTime bug/feature?
by Steve Alexander 24 Aug '01

24 Aug '01

I get different times from a string, depending whether I use '-' or '/' as a date delimiter. >>> from DateTime.DateTime import DateTime >>> DateTime('2001-08-20').pCommonZ() 'Aug. 20, 2001 12:00 am GMT+0' >>> DateTime('2001/08/20').pCommonZ() 'Aug. 20, 2001 12:00 am GMT+1' >>> I find the difference a tad surprising. Is this a bug or a feature? If it's a bug, I'll work on a fix. I'm guessing this is a feature; perhaps using the '-' delimiter suggests I'm trying to use ISO formatting. I'm running this in a GMT+1 timezone btw. Zope latest from CVS, Python 2.1. -- Steve Alexander Software Engineer Cat-Box limited

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RE: [Zope-dev] Memory Leak debug - help
by sean.upton＠uniontrib.com 24 Aug '01

24 Aug '01

Forgive my ignorance, but what are the characteristics of a leak in this regard? I use a catalog-intensive setup, and my memory footprint for Zope seems to slowly increase over several days. Might this be a leak? On my 2 ZEO identical clients, I get about an average of 50-60 catalog queries per minute each, and load is distributed equally (round-robin) over the 2 nodes by my proxy server. Both nodes were restarted at the same time yesterday, yet the one node that performed a re-indexing of about 16,000 objects early this morning has an RSS of 242 MB vs. 219 MB on the other node. The RSS on both nodes had grown to over 450 MB earlier yesterday before I restarted Zope, so I wonder if that is a leak, esp. in regard to re-indexing a catalog, or something else. Forgive the ignorance of my question - I'm just trying to get a grasp on this. Sean -----Original Message----- From: Shane Hathaway [mailto:shane@zope.com] Sent: Friday, August 24, 2001 8:15 AM To: Júlio Dinis Silva Cc: zope-dev(a)zope.org Subject: Re: [Zope-dev] Memory Leak debug - help Júlio Dinis Silva wrote: > I've tracked down some memory leaks and now after running > for 3 days zeo client's memory goes stable. > > But I would like to know if there is someone who can comment on this: > > -On a zope client running for 3 days I get on top of RefCount > from DebugInfo the following class: > > BTrees.IIBtree.IIBucket > > Question1: does anyone can point out some products which do heavy > use of this class soo I can debug on that? I know there is ZCatalog, but > what else? > > Question2: does anyone know if it is safe to apply to this class > the LeakFinder product patch? It probably won't work. IIBucket is implemented in C. LeakFinder tries to patch classes with an __init__ and a __del__, which only works with Python classes. ZCatalog could be the culprit if you have a lot of records. Shane _______________________________________________ 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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Memory Leak debug - help
by J�lio Dinis Silva 24 Aug '01

24 Aug '01

Hello everyone, I've tracked down some memory leaks and now after running for 3 days zeo client's memory goes stable. But I would like to know if there is someone who can comment on this: -On a zope client running for 3 days I get on top of RefCount from DebugInfo the following class: BTrees.IIBtree.IIBucket Question1: does anyone can point out some products which do heavy use of this class soo I can debug on that? I know there is ZCatalog, but what else? Question2: does anyone know if it is safe to apply to this class the LeakFinder product patch? Regards, Julio Dinis Silva _________________________________________________________________ Get your FREE download of MSN Explorer at http://explorer.msn.com/intl.asp

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delegable user folder
by Jim Penny 24 Aug '01

24 Aug '01

Hi: (This message is an attempt to state a problem and solicit feedback. I am not looking for collaborators, someone to code it for me, or the like. I want to know if other people have thought along these lines and would be interested in such a UserFolder.) (I will cheerfully ignore "not another userFolder" messages. I have no choice!) I am starting to be in desperate need of a delegable user folder. By this, I mean that I want a user folder that allows the superuser to delegate account creation, revocation, and passwording to another less powerful administrator. This less powerful administrator would belong to a set of "associations". The individuals that he granted authority to would have no more associations than the granting administrator. (He might grant a proper subset of his associations, though). For example, I might create an administrator Andy who had authority over ('Gap', 'Old Navy', 'Banana Republic'). Andy could create users who had any, or all, of these associations. Andy could also create other administrators who had any or all of these associations. Question: Suppose Barb was an administrator for ('Levi') and created user Chris (along with some identifying information). Should Andy be able to add his (one of) association(s) to Chris, or should he be forced to create a new user? I could code either one and live with either one. This question is concerned with the 'greater good'. I also want some options and data I have not seen under other userfolders. I want (at least) these: timestamp of last login, number of consecutive login failures, IP of last login, authorizing administrator(s). I want a forcePasswordChange method. I would also want a passesPasswordPolicy method, which would be (at least) somewhat configureable without coding and would be called before account creation or password change. Are there any other things that occur to you as being necessary to determining revocation policy? What about privacy? Should a user be allowed to mark some (or all) of his identifying data private? Should an adminstrator be allowed to add his association to another individual who has all of his data marked private? Finally, given that I have to do this, do you have any advice on how to start. ZPatterns/loginmanager, extUserFolder, some other UserFolder, or "just start hacking"? Thanks Jim Penny

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bug or not ?
by Florent Guillaume 23 Aug '01

23 Aug '01

I needed this patch. Is it correct ? I'm not sure if the problem shows without LDAPLoginAdapter. (I guess nobody ever tried to catalog a SkinnedFolder before me :-) --- SkinnedFolder.py.orig Wed Jun 20 04:57:12 2001 +++ SkinnedFolder.py Thu Aug 23 20:56:59 2001 @@ -163,9 +163,9 @@ def Creator( self ): """ Return the ID of our owner. """ - return self.getOwner()[1] + return self.getOwner(1)[1] InitializeClass( SkinnedFolder ) def addSkinnedFolder( self, id, title='', description='', REQUEST=None ): Florent Guillaume Nuxeo

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