- Zope - Zope lists

DeadlockDebugger revisited
by Matthew X. Economou 27 Jun '06

27 Jun '06

I thought a recent operating system upgrade (FreeBSD 5.4 to 6.1) fixed my problems with Zope. Unfortunately, once I re-compiled Python et al (to remove dependencies on the old libraries), my problems with Zope deadlocking recurred. I tried to use a combination of tools to try to discover the root cause of this problem, but nothing seems to work. What am I missing, and what else can I try? This system is: Nokia IP440 (Pentium II-333MHz, 256 MB RAM) FreeBSD 6.1-RELEASE-p1 Python 2.3.5 Zope 2.8.6 Plone 2.1.2 Trace and event logs: I set up the trace log to save all messages, and the last few lines of the access, event, and trace logs are: Z2.log: 127.0.0.1 - Anonymous [15/Jun/2006:22:52:54 -0400] "GET /VirtualHostBase/http/web.irtnog.org:80/irtnog/VirtualHostRoot/irtnog/he lpcenter_icon.gif HTTP/1.1" 200 1322 "http://web.irtnog.org/howtos-orig/freebsd-pf-pppoe" "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; .NET CLR 1.1.4322)" event.log: 2006-06-15T22:40:28 INFO Plone Debug Error exceptions.AttributeError on getBeginAndEndTimes while rendering portlet here/portlet_simpleblog/macros/portletBlogFull_local trace.log: B 221198124 2006-06-15T22:52:54 GET /VirtualHostBase/http/web.irtnog.org:80/irtnog/VirtualHostRoot/Members/x enophon/photos/washdc-jan-2006/photoalbum_view?b_start:int=20 I 221198124 2006-06-15T22:52:54 0 DeadlockDebugger + threadframe: Once the Zope process deadlocks, it ceases to respond on port 8080 (the configured listener port). Thus it is not possible to obtain a thread dump from Zope using this package. Lsof: I checked the list of open files on the Zope process but didn't see anything out of the ordinary (attached as "zope-lsof.txt") Strace/Truss/Ktrace: I traced the process using ktrace, dumped it with "kdump -H" to get thread IDs, and got the following information: 7505 100075 python2.3 PSIG SIGSEGV SIG_DFL 7505 100075 python2.3 PSIG SIGSEGV SIG_DFL 7505 100075 python2.3 PSIG SIGSEGV SIG_DFL 7505 100075 python2.3 PSIG SIGSEGV SIG_DFL 7505 100075 python2.3 PSIG SIGSEGV SIG_DFL 7505 100075 python2.3 PSIG SIGSEGV SIG_DFL 7505 100075 python2.3 PSIG SIGSEGV SIG_DFL 7505 100075 python2.3 PSIG SIGSEGV SIG_DFL 7505 100075 python2.3 PSIG SIGSEGV SIG_DFL 7505 100075 python2.3 PSIG SIGSEGV SIG_DFL I traced the process using truss and got the following information: SIGNAL 11 (SIGSEGV) SIGNAL 11 (SIGSEGV) SIGNAL 11 (SIGSEGV) SIGNAL 11 (SIGSEGV) SIGNAL 11 (SIGSEGV) SIGNAL 11 (SIGSEGV) Strace showed the same information: --- SIGSEGV (Segmentation fault: 11) --- --- SIGSEGV (Segmentation fault: 11) --- --- SIGSEGV (Segmentation fault: 11) --- --- SIGSEGV (Segmentation fault: 11) --- --- SIGSEGV (Segmentation fault: 11) --- --- SIGSEGV (Segmentation fault: 11) --- --- SIGSEGV (Segmentation fault: 11) --- --- SIGSEGV (Segmentation fault: 11) --- GDB + attach + info threads (https://engineering.purdue.edu/ECN/Resources/KnowledgeBase/Docs/2006051 8104722): The faulting thread seems to be in the middle of pthread_mutexattr_init. (gdb) info threads * 7 LWP 100075 0x2820e5c2 in pthread_mutexattr_init () from /usr/lib/libpthread.so.2 6 Thread 0x8111000 (sleeping) 0x2820df0f in pthread_mutexattr_init () from /usr/lib/libpthread.so.2 5 Thread 0xa318a00 (LWP 100062) 0x2821546b in pthread_testcancel () from /usr/lib/libpthread.so.2 4 Thread 0x991ac00 (runnable) 0x00000000 in ?? () 3 Thread 0x9062400 (runnable) 0x0cea3a2c in ?? () 2 Thread 0x9a37a00 (sleeping) 0x2820df0f in pthread_mutexattr_init () from /usr/lib/libpthread.so.2 1 Thread 0x9a35800 (sleeping) 0x2820df0f in pthread_mutexattr_init () from /usr/lib/libpthread.so.2 None of the threads are in the sigsuspend, poll, select, or kill state, although it's possible that the sleeping state is equivalent to sigsuspend. At a whim, I tried stepping into the process, but this didn't do anything other than show the SEGV on the console. (gdb) call PyRun_SimpleString("import string,sys,os,ZServer; sys.stdout=open('/tmp/urls','w',0); print string.join(map(lambda a:str(getattr(a,'env',{}).get('PATH_INFO','')), sys.modules['asyncore'].socket_map.values()), '\\n')") Program received signal SIGSEGV, Segmentation fault. [Switching to Thread 0x9062400 (LWP 100075)] 0x0cea3a2c in ?? () The program being debugged was signaled while in a function called from GDB. And: (gdb) call PyRun_SimpleString("import sys, traceback;sys.stderr=open('/tmp/tb','w',0); traceback.print_stack()") [Switching to Thread 0x9062400 (LWP 100114)] Cannot set lwp 100114 registers: Invalid argument Cannot set lwp 100114 registers: Invalid argument -- jsoffron: I'm generally pretty high on national defense... Mr. Bad Example: Careful...it's a gateway policy. Before you know it, you'll be mainlining the hard stuff like trade agreements. jsoffron: Too late...I've been freebasing Nafta all day... Sweet, sweet NAFTA. - As seen on Slashdot

2 5

Problem running zopectl
by Mike B 26 Jun '06

26 Jun '06

I'm getting the following error message when I try to run zopectl. I've googled it and looked through the archives but found nothing. Any help would be appreciated. I'm running python 2.4.3 and zope 2.9.3. Traceback (most recent call last): File "/usr/share/zope/zope/lib/python/Zope2/Startup/zopectl.py", line 316, in ? main() File "/usr/share/zope/zope/lib/python/Zope2/Startup/zopectl.py", line 274, in main options.realize(args) File "/usr/share/zope/zope/lib/python/Zope2/Startup/zopectl.py", line 91, in realize ZDOptions.realize(self, *args, **kw) File "/usr/share/zope/z-2.9.3//lib/python/zdaemon/zdoptions.py", line 273, in realize self.load_schema() File "/usr/share/zope/z-2.9.3//lib/python/zdaemon/zdoptions.py", line 321, in load_schema self.schema = ZConfig.loadSchema(self.schemafile) File "/usr/share/zope/z-2.9.3//lib/python/ZConfig/loader.py", line 31, in loadSchema return SchemaLoader().loadURL(url) File "/usr/share/zope/z-2.9.3//lib/python/ZConfig/loader.py", line 65, in loadURL return self.loadResource(r) File "/usr/share/zope/z-2.9.3//lib/python/ZConfig/loader.py", line 159, in loadResource schema = ZConfig.schema.parseResource(resource, self) File "/usr/share/zope/z-2.9.3//lib/python/ZConfig/schema.py", line 27, in parseResource xml.sax.parse(resource.file, parser) File "/usr/local/lib/python2.4/xml/sax/__init__.py", line 33, in parse parser.parse(source) File "/usr/local/lib/python2.4/xml/sax/expatreader.py", line 107, in parse xmlreader.IncrementalParser.parse(self, source) File "/usr/local/lib/python2.4/xml/sax/xmlreader.py", line 123, in parse self.feed(buffer) File "/usr/local/lib/python2.4/xml/sax/expatreader.py", line 207, in feed self._parser.Parse(data, isFinal) File "/usr/local/lib/python2.4/xml/sax/expatreader.py", line 300, in start_element self._cont_handler.startElement(name, AttributesImpl(attrs)) File "/usr/share/zope/z-2.9.3//lib/python/ZConfig/schema.py", line 99, in startElement getattr(self, "start_" + name)(attrs) File "/usr/share/zope/z-2.9.3//lib/python/ZConfig/schema.py", line 475, in start_schema keytype, valuetype, datatype = self.get_sect_typeinfo(attrs) File "/usr/share/zope/z-2.9.3//lib/python/ZConfig/schema.py", line 201, in get_sect_typeinfo datatype = self.get_datatype(attrs, "datatype", "null", base) File "/usr/share/zope/z-2.9.3//lib/python/ZConfig/schema.py", line 194, in get_datatype return self._registry.get(dtname) File "/usr/share/zope/z-2.9.3//lib/python/ZConfig/datatypes.py", line 398, in get t = self.search(name) File "/usr/share/zope/z-2.9.3//lib/python/ZConfig/datatypes.py", line 423, in search package = __import__(n, g, g, component) File "/usr/share/zope/z-2.9.3//lib/python/Zope2/Startup/datatypes.py", line 21, in ? import OFS.Uninstalled File "/usr/share/zope/z-2.9.3//lib/python/OFS/Uninstalled.py", line 16, in ? import SimpleItem, Globals, Acquisition File "/usr/share/zope/z-2.9.3//lib/python/OFS/SimpleItem.py", line 26, in ? import AccessControl.Role, AccessControl.Owned, App.Common File "/usr/share/zope/z-2.9.3//lib/python/AccessControl/__init__.py", line 17, in ? from Implementation import setImplementation File "/usr/share/zope/z-2.9.3//lib/python/AccessControl/Implementation.py", line 98, in ? setImplementation("C") File "/usr/share/zope/z-2.9.3//lib/python/AccessControl/Implementation.py", line 51, in setImplementation from AccessControl import ImplC as impl File "/usr/share/zope/z-2.9.3//lib/python/AccessControl/ImplC.py", line 30, in ? from ImplPython import RestrictedDTML, SecurityManager, ZopeSecurityPolicy ImportError: No module named ImplPython

2 1

zcatalog strange behavior
by bard stéphane 26 Jun '06

26 Jun '06

Hi every one I've used zcatalog 2 years ago. Every thing was perfect My zclass objects where removed from zcatalog when they were delete etc ... Today i try to create another zclass on the same zope server (2.6) zclass with zobject,zcatalogaware inheritance and the zcatalogawareness don't work any more. And I don't know why !!!!!! So each time a property is modified i should force a refresh like that : my_zcatalog.update(refresh=1) this refresh all my indexes. But it's not normal On the other zclass product, each time an object is modified indexes are modified transparently How can i check,debug, test Zcatalog-Aware ability ? Thank's for all

2 2

Zope not sending images problem
by Aidas Dailidė 26 Jun '06

26 Jun '06

Hi there, I've installed 2.7.8 on OS X Server and added some Zope product. The problem is that the web page works fine from localhost, but from remote hosts it fails to load some random images. HTML loads quickly and without any problems. What could be wrong? Sometimes some of the images load and sometimes not. Maybe I'm out of free memory or something? Thanks a lot, Aidas

3 2

Content Disposition - Download files
by Bruno Grampa 26 Jun '06

26 Jun '06

Hello, i want to send an image or a pdf to a browser not for viewing but for downloading. I've written this code: <dtml-call "RESPONSE.setHeader('Content-type', 'application/force-download')"> <dtml-call "RESPONSE.setHeader('Content-Disposition', 'attachment; filename=filename.gif')"> now i have to send the file as a binary flow, but i don't know how to do. Can you help me? Thanks, Bruno

5 6

get non-acquired attributes of an instance
by thomas desvenain 26 Jun '06

26 Jun '06

hello, is it possible to get the list of all an object's attributes, excepted the ones acquired from parents ? thanks -- Thomas Desvenain Junior Plone/Zope analyst-developer, Looking for a Job ! Now, trainee at Institut National de Recherche Agronomique Mathématiques, Informatique et Génôme laboratory 78350 Jouy en Josas +33 (0)1 34 65 29 43

3 2

Import Modules
by Luiz Fernando B. Ribeiro 26 Jun '06

26 Jun '06

Hello, I manage my own servers developing web applications and I would like to remove the import restrictions of python modules in python scripts. Is it possible? How can I allow other modules to be imported? I have been using external modules but it is starting to become nonproductive since I have to create functions to simple problems like md5, re, etc, and just using the needed modules would be much simple. I use Zope as an application server and my clients do not have access to the ZMI, so I'm not concerned with protection against misuse by my clients. Thanks in advance, -- Luiz Fernando B. Ribeiro

5 7

Re: [Zope] get non-acquired attributes of an instance
by thomas desvenain 26 Jun '06

26 Jun '06

2006/6/26, Andreas Jung <lists(a)zopyx.com>: > > > --On 26. Juni 2006 10:53:39 +0200 thomas desvenain > <thomas.desvenain(a)gmail.com> wrote: > > > aq_base(aq_inner(obj)).__dict__ ? > > > > hmm it doesn't works, i get metadata only, > > 'metadata'? This is an unkown term in the context of Zope/Python objects > except for catalog brain objects...what you you mean? sorry, it's because i work with at/plone objects : toto.__dict__ displays only some identifiers, metadata and 'content' of toto object {'_EtagSupport__etag': 'ts51320374.17', '_at_uid': 'ffa61909947ef9021cab5bcbccfb5f54', '_md': {'excludeFromNav': None, 'description': '', 'contributors': (), 'rights': '', 'language': '', 'effectiveDate': None, 'expirationDate': None, 'allowDiscussion': None, 'creators': (u'admin',), 'subject': ()}, '_objects': ({'id': 'connection', 'meta_type': 'Z Psycopg Database Connection'},), 'at_references': <Folder at at_references>, 'connection': <Connection at connection>, 'creation_date': DateTime('2006/06/26 13:10:40.161 GMT+2'), 'demarshall_hook': None, 'id': 'toto', 'marshall_hook': None, 'modification_date': DateTime('2006/06/26 13:12:54.164 GMT+2'), 'title': ''} and so does aq_base(aq_inner(toto)).__dict__ > > > > > and with > > > > dir(aq_base(aq_inner(test.toto))) > > > > i get acquired methods too... > > Of course yes...that's standard Python behavior. > > -aj > > -- Thomas Desvenain Junior Plone/Zope analyst-developer, Looking for a Job ! Now, trainee at Institut National de Recherche Agronomique Mathématiques, Informatique et Génôme laboratory 78350 Jouy en Josas +33 (0)1 34 65 29 43

2 1

No joy on 8080.
by Ignacio Valdes 26 Jun '06

26 Jun '06

Hello all, I installed Zope on Fedora Core 5 using yum install zope, I opened port 8080 with lokkit, then I started it up using zopectl start. This is all on a headless server by ssh so I can't check http://localhost:8080 but http://server ip address:8080 on my browser doesn't work. I do have xampp apache running as well and can get the xampp welcome screen to appear but with xampp apache started or stopped http://server ip address:8080 doesn't do anything. I'm baffled as to what to do next. What should I try? Thanks! -- IV

6 12

RE: [Zope] Searching for and displaying properties
by Sinang, Danny 26 Jun '06

26 Jun '06

> manage_addProperty does not trigger recataloguing of the object even if its a subclass of CatalogAwareness. You should ? > either call > obj.reindex_object() or at least obj.index_object(), if your class has the CatalogAwareness-Mixin or you use the catalog > API: > yourcatalog.catalog_object(obj,obj.absolute_url_path()) > After that, your metadata should show up nicely w/o indexing the whole object tree. Thanks Tino. I'd like to try your suggestion, but I don't know how to refer to the object that needs recataloguing. Can you help ? Again, here's my code that calls manage_addProperty. <code> wf = context.GeneralWorkflow instance_id = wf.addInstance( process_id=process, customer=jobname, comments=comment, title=subject, activation=1) wf.getInstance(instance_id).manage_addProperty('jobname', 'ABC12345', 'string') </code> - Danny

2 1