- Zope - Zope lists

Streaming files
by Sinang, Danny 10 Aug '05

10 Aug '05

Dear List, Am a newbie so please bear with me. I need Zope to stream files to my users when they click on a link. Exactly how is this done ? Is it by the use of the Request.Write () method ? If so, can you give me sample code and some reference links ? Thanks. Danny

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ECommerce?
by Shane Graber 10 Aug '05

10 Aug '05

I'm looking for an e-commerce solution for Zope / Plone. My specific requirements are that we want to make available files for download that customers would have to pay for before they could download them. Does anyone have any suggestions on what Zope and/or Plone products to look for? Thanks, Shane -- http://liquid.homelinux.org/

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large installations and conflict errors
by M. Krainer 09 Aug '05

09 Aug '05

Hi! We run a self developed zope product originally based on cmf but highly customized and extended. Our Data.fs now has grown to a (packed) size of > 25GB and we are running more and more into performance troubles (mostly due to a lot of conflict errors). Our users make a lot of updates, i.e. we have lots of write operations. Currently we think that our bottle neck is the 'portal_catalog' and I'm working on splitting it up into multiple ZCatalogs. So far our story, but what I really wonder is, if there's anyone out there who has a similar large installation. Please let me know how large your zope instance is and what you have done to increase your (write) performance. Also any ideas that may help us are welcome. Additional info: 4 ZEO clients, 1 ZEO server (all machines have dual P4 and 3-4GB ram), Zope-2.8.0 Thanks, Markus

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Benchmark ZOBD compared to RDBMS
by Simon ALEXANDRE 09 Aug '05

09 Aug '05

Hi, I'm searching for benchmark comparing ZODB to some RDBMS like Mysql. I know that both technologies are different but I'd like to know if we should expect some performance problem with ZODB used to store millions of objects. Thanks Simon

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Anyone using isapirewrite or freshlogic re-write for IIS and Zope?
by michael nt milne 09 Aug '05

09 Aug '05

Hi Has anyone used either of the ISAPI re-write tools for IIS and Zope from HeliconTech at http://www.isapirewrite.com or at Freshlogic http://freshlogic.net ? I'm attempting to set up a largescale instance on a windows small business server. The latter is written more for Plone and Zope in mind. Both cost around £30-35. Thanks

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Re: Need to find RSS product
by Leticia Larrosa 09 Aug '05

09 Aug '05

Thanks to all ! -----Original Message----- From: David Siedband <technique(a)oceanicsky.com> To: "Leticia Larrosa" <LETICIA(a)tesla.cujae.edu.cu> Date: Mon, 8 Aug 2005 13:42:23 -0700 Subject: Re: Need to find RSS product > Leticia, > > have a look at this product, yo! > > ZExternalNews > http://www.zope.org/Members/odeckmyn/ZExternalNews > > peace > -- > David > > > > > > > On Aug 7, 2005, at 2:15 PM, Leticia Larrosa wrote: > > > Hi all: > > > > Any recommendation for a RSS product. Indeed what i want is a client > to > > obtain information from a RSS server and present this in a page. > > > > Thanks in advanced !!! > > > > > > > > > > _______________________________________________ > > Zope maillist - Zope(a)zope.org > > http://mail.zope.org/mailman/listinfo/zope > > ** No cross posts or HTML encoding! ** > > (Related lists - > > http://mail.zope.org/mailman/listinfo/zope-announce > > http://mail.zope.org/mailman/listinfo/zope-dev ) > > > > >

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Zope 2.8 and conflict errors
by Maciej Wisniowski 08 Aug '05

08 Aug '05

Hi! Does anybody tried 2.8 and can say something about conflict errors? I've done few tests and results are not good. We've checked one of our applications on Zope 2.7.2 and the same application on Zope 2.8. We have simulated 50-65 users executing the same path in application. There was total count 1500 pages visited during test. With Zope 2.7.2 we've received about 39 internal server errors HTTP/1.1 500. Errors in Zope 2.7.2 are mainly ReadConflictErrors with DCOracle2.DA.Procedure like: ------ 2005-08-01T09:54:08 INFO(0) TM:65540 Failed to abort object Traceback (most recent call last): File "/opt/Zope/2.7.2/lib/python/ZODB/Transaction.py", line 393, in _commit_error j.abort(o, self) File "/opt/Zope/2.7.2/lib/python/ZODB/Connection.py", line 561, in setstate invalid = self._is_invalidated(obj) File "/opt/Zope/2.7.2/lib/python/ZODB/Connection.py", line 590, in _is_invalidated raise ReadConflictError(object=obj) ReadConflictError: database read conflict error (oid 00000000000299de, class Products.DCOracle2.DA.Procedure) ------ Other errors are like "Shouldn't load state xxx when connection is closed" but these are known bugs in older ZODB version. Zope 2.8 supports MVCC so we hoped that the number of errors decrease but... with Zope 2.8 we get about 129 internal server errors HTTP/1.1 500 and additionally a lot of 402 errors (unauthorized). Errors 402 are because of internal server errors on login page (testing application continues test without checking if user has been properly logged in). In the event.log there are no conflict errors saved :-/ , only unauthorized. We get the error from client responses and from console. I don't know what happens. May it be because of using old data.fs file (from 2.7.2) with Zope 2.8? Anybody has similiar experiences? Is Zope 2.8 useable?? Below few errors from the console (runzope) and from user browser: ---------------------------------------------------------------- 2005-08-01 10:46:22 INFO ZODB conflict error at /crProd/acl_users/login (16 conflicts since startup at 2005-08-01T10:45:58) 2005-08-01 10:46:22 BLATHER Conflict traceback Traceback (most recent call last): File "/opt/Zope/2.8.0/lib/python/ZPublisher/Publish.py", line 113, in publish request, bind=1) File "/opt/Zope/2.8.0/lib/python/ZPublisher/mapply.py", line 88, in mapply if debug is not None: return debug(object,args,context) File "/opt/Zope/2.8.0/lib/python/ZPublisher/Publish.py", line 40, in call_object result=apply(object,args) # Type s<cr> to step into published object. File "/opt/Zope/2.8.0/lib/python/Shared/DC/Scripts/Bindings.py", line 311, in __call__ return self._bindAndExec(args, kw, None) File "/opt/Zope/2.8.0/lib/python/Shared/DC/Scripts/Bindings.py", line 348, in _bindAndExec return self._exec(bound_data, args, kw) File "/opt/Zope/2.8.0/lib/python/Products/PythonScripts/PythonScript.py", line 323, in _exec result = f(*args, **kw) File "Script (Python)", line 3, in login File "/opt/Zope/2.8.0/lib/python/ZPublisher/HTTPRequest.py", line 1214, in __getattr__ v = self.get(key, default, returnTaints=returnTaints) File "/opt/Zope/2.8.0/lib/python/ZPublisher/HTTPRequest.py", line 1174, in get if callable(v): v = v() File "/opt/Zope/2.8.0/lib/python/Products/Sessions/SessionDataManager.py", line 93, in getSessionData return self._getSessionDataObject(key) File "/opt/Zope/2.8.0/lib/python/Products/Sessions/SessionDataManager.py", line 180, in _getSessionDataObject ob = container.new_or_existing(key) File "/opt/Zope/2.8.0/lib/python/Products/Transience/Transience.py", line 844, in new_or_existing item = self.get(key, _marker) File "/opt/Zope/2.8.0/lib/python/Products/Transience/Transience.py", line 491, in get item = self._move_item(k, current_ts, default) File "/opt/Zope/2.8.0/lib/python/Products/Transience/Transience.py", line 297, in _move_item abucket = self._data.get(ts, None) # XXX ReadConflictError hotspot File "/opt/Zope/2.8.0/lib/python/ZODB/Connection.py", line 704, in setstate self._setstate(obj) File "/opt/Zope/2.8.0/lib/python/ZODB/Connection.py", line 757, in _setstate self._load_before_or_conflict(obj) File "/opt/Zope/2.8.0/lib/python/ZODB/Connection.py", line 768, in _load_before_or_conflict raise ReadConflictError(object=obj) ReadConflictError: database read conflict error (oid 0x0a, class BTrees._IOBTree.IOBTree) ---------------------------------------------------------------- error in /crProd/acl_users/login - is with request.SESSION statement. ---------------------------------------------------------------- 2005-08-01 10:46:21 BLATHER Conflict traceback Traceback (most recent call last): File "/opt/Zope/2.8.0/lib/python/ZPublisher/Publish.py", line 113, in publish request, bind=1) File "/opt/Zope/2.8.0/lib/python/ZPublisher/mapply.py", line 88, in mapply if debug is not None: return debug(object,args,context) File "/opt/Zope/2.8.0/lib/python/ZPublisher/Publish.py", line 40, in call_object result=apply(object,args) # Type s<cr> to step into published object. File "/opt/Zope/2.8.0/lib/python/Shared/DC/Scripts/Bindings.py", line 311, in __call__ return self._bindAndExec(args, kw, None) File "/opt/Zope/2.8.0/lib/python/Shared/DC/Scripts/Bindings.py", line 348, in _bindAndExec return self._exec(bound_data, args, kw) File "/opt/Zope/2.8.0/lib/python/Products/PythonScripts/PythonScript.py", line 323, in _exec result = f(*args, **kw) File "Script (Python)", line 3, in login File "/opt/Zope/2.8.0/lib/python/ZPublisher/HTTPRequest.py", line 1214, in __getattr__ v = self.get(key, default, returnTaints=returnTaints) File "/opt/Zope/2.8.0/lib/python/ZPublisher/HTTPRequest.py", line 1174, in get if callable(v): v = v() File "/opt/Zope/2.8.0/lib/python/Products/Sessions/SessionDataManager.py", line 93, in getSessionData return self._getSessionDataObject(key) File "/opt/Zope/2.8.0/lib/python/Products/Sessions/SessionDataManager.py", line 180, in _getSessionDataObject ob = container.new_or_existing(key) File "/opt/Zope/2.8.0/lib/python/Products/Transience/Transience.py", line 844, in new_or_existing item = self.get(key, _marker) File "/opt/Zope/2.8.0/lib/python/Products/Transience/Transience.py", line 491, in get item = self._move_item(k, current_ts, default) File "/opt/Zope/2.8.0/lib/python/Products/Transience/Transience.py", line 280, in _move_item self._housekeep(current_ts) File "/opt/Zope/2.8.0/lib/python/Products/Transience/Transience.py", line 939, in _housekeep self._finalize(now) File "/opt/Zope/2.8.0/lib/python/Products/Transience/Transience.py", line 547, in _finalize last_finalized = self._last_finalized_timeslice() File "/opt/Zope/2.8.0/lib/python/Products/Transience/Transience.py", line 1076, in __call__ return self.value File "/opt/Zope/2.8.0/lib/python/ZODB/Connection.py", line 704, in setstate self._setstate(obj) File "/opt/Zope/2.8.0/lib/python/ZODB/Connection.py", line 757, in _setstate self._load_before_or_conflict(obj) File "/opt/Zope/2.8.0/lib/python/ZODB/Connection.py", line 768, in _load_before_or_conflict raise ReadConflictError(object=obj) ReadConflictError: database read conflict error (oid 0x09, class Products.Transience.Transience.Increaser) ----------------------------------------------------------- or ----------------------------------------------------------- 2005-08-01 10:46:21 BLATHER Conflict traceback Traceback (most recent call last): File "/opt/Zope/2.8.0/lib/python/ZPublisher/Publish.py", line 113, in publish request, bind=1) File "/opt/Zope/2.8.0/lib/python/ZPublisher/mapply.py", line 88, in mapply if debug is not None: return debug(object,args,context) File "/opt/Zope/2.8.0/lib/python/ZPublisher/Publish.py", line 40, in call_object result=apply(object,args) # Type s<cr> to step into published object. File "/opt/Zope/2.8.0/lib/python/Shared/DC/Scripts/Bindings.py", line 311, in __call__ return self._bindAndExec(args, kw, None) File "/opt/Zope/2.8.0/lib/python/Shared/DC/Scripts/Bindings.py", line 348, in _bindAndExec return self._exec(bound_data, args, kw) File "/opt/Zope/2.8.0/lib/python/Products/PythonScripts/PythonScript.py", line 323, in _exec result = f(*args, **kw) File "Script (Python)", line 3, in login File "/opt/Zope/2.8.0/lib/python/ZPublisher/HTTPRequest.py", line 1214, in __getattr__ v = self.get(key, default, returnTaints=returnTaints) File "/opt/Zope/2.8.0/lib/python/ZPublisher/HTTPRequest.py", line 1174, in get if callable(v): v = v() File "/opt/Zope/2.8.0/lib/python/Products/Sessions/SessionDataManager.py", line 93, in getSessionData return self._getSessionDataObject(key) File "/opt/Zope/2.8.0/lib/python/Products/Sessions/SessionDataManager.py", line 180, in _getSessionDataObject ob = container.new_or_existing(key) File "/opt/Zope/2.8.0/lib/python/Products/Transience/Transience.py", line 847, in new_or_existing self[key] = item File "/opt/Zope/2.8.0/lib/python/Products/Transience/Transience.py", line 435, in __setitem__ length = self._length() # XXX ReadConflictError hotspot File "/opt/Zope/2.8.0/lib/python/Products/Transience/Transience.py", line 1119, in __call__ return self.value File "/opt/Zope/2.8.0/lib/python/ZODB/Connection.py", line 704, in setstate self._setstate(obj) File "/opt/Zope/2.8.0/lib/python/ZODB/Connection.py", line 757, in _setstate self._load_before_or_conflict(obj) File "/opt/Zope/2.8.0/lib/python/ZODB/Connection.py", line 768, in _load_before_or_conflict raise ReadConflictError(object=obj) ReadConflictError: database read conflict error (oid 0x08, class Products.Transience.Transience.Length2) ----------------------------------------------------------- or ----------------------------------------------------------- 2005-08-01 10:46:21 BLATHER Conflict traceback Traceback (most recent call last): File "/opt/Zope/2.8.0/lib/python/ZPublisher/Publish.py", line 113, in publish request, bind=1) File "/opt/Zope/2.8.0/lib/python/ZPublisher/mapply.py", line 88, in mapply if debug is not None: return debug(object,args,context) File "/opt/Zope/2.8.0/lib/python/ZPublisher/Publish.py", line 40, in call_object result=apply(object,args) # Type s<cr> to step into published object. File "/opt/Zope/2.8.0/lib/python/Shared/DC/Scripts/Bindings.py", line 311, in __call__ return self._bindAndExec(args, kw, None) File "/opt/Zope/2.8.0/lib/python/Shared/DC/Scripts/Bindings.py", line 348, in _bindAndExec return self._exec(bound_data, args, kw) File "/opt/Zope/2.8.0/lib/python/Products/PythonScripts/PythonScript.py", line 323, in _exec result = f(*args, **kw) File "Script (Python)", line 3, in login File "/opt/Zope/2.8.0/lib/python/ZPublisher/HTTPRequest.py", line 1214, in __getattr__ v = self.get(key, default, returnTaints=returnTaints) File "/opt/Zope/2.8.0/lib/python/ZPublisher/HTTPRequest.py", line 1174, in get if callable(v): v = v() File "/opt/Zope/2.8.0/lib/python/Products/Sessions/SessionDataManager.py", line 93, in getSessionData return self._getSessionDataObject(key) File "/opt/Zope/2.8.0/lib/python/Products/Sessions/SessionDataManager.py", line 180, in _getSessionDataObject ob = container.new_or_existing(key) File "/opt/Zope/2.8.0/lib/python/Products/Transience/Transience.py", line 844, in new_or_existing item = self.get(key, _marker) File "/opt/Zope/2.8.0/lib/python/Products/Transience/Transience.py", line 491, in get item = self._move_item(k, current_ts, default) File "/opt/Zope/2.8.0/lib/python/Products/Transience/Transience.py", line 297, in _move_item abucket = self._data.get(ts, None) # XXX ReadConflictError hotspot File "/opt/Zope/2.8.0/lib/python/ZODB/Connection.py", line 704, in setstate self._setstate(obj) File "/opt/Zope/2.8.0/lib/python/ZODB/Connection.py", line 757, in _setstate self._load_before_or_conflict(obj) File "/opt/Zope/2.8.0/lib/python/ZODB/Connection.py", line 768, in _load_before_or_conflict raise ReadConflictError(object=obj) ReadConflictError: database read conflict error (oid 0x0a, class BTrees._IOBTree.IOBTree) ----------------------------------------------------------- or ----------------------------------------------------------- 2005-08-01 10:47:55 INFO ZODB conflict error at /crProd/cr/centralne/procName (87 conflicts since startup at 2005-08-01T10:45:58) 2005-08-01 10:47:55 BLATHER Conflict traceback Traceback (most recent call last): File "/opt/Zope/2.8.0/lib/python/ZPublisher/Publish.py", line 119, in publish transactions_manager.commit() File "/opt/Zope/2.8.0/lib/python/Zope2/App/startup.py", line 215, in commit transaction.commit() File "/opt/Zope/2.8.0/lib/python/transaction/_manager.py", line 84, in commit self.get().commit(sub) File "/opt/Zope/2.8.0/lib/python/transaction/_transaction.py", line 382, in commit self._saveCommitishError() # This raises! File "/opt/Zope/2.8.0/lib/python/transaction/_transaction.py", line 380, in commit self._commitResources() File "/opt/Zope/2.8.0/lib/python/transaction/_transaction.py", line 428, in _commitResources rm.tpc_vote(self) File "/opt/Zope/2.8.0/lib/python/ZODB/Connection.py", line 637, in tpc_vote s = vote(transaction) File "/opt/Zope/2.8.0/lib/python/ZEO/ClientStorage.py", line 893, in tpc_vote return self._check_serials() File "/opt/Zope/2.8.0/lib/python/ZEO/ClientStorage.py", line 877, in _check_serials raise s ConflictError: database conflict error (oid 0x0299de, class Products.DCOracle2.DA.Procedure, serial this txn started with 0x035f0726c7bfca88 2005-08-01 08:38:46.816215, serial currently committed 0x035f072fed78ebee 2005-08-01 08:47:55.657582) ----------------------------------------------------------- User receives errors like: ----------------------------------------------------------------- Response: HTTP/1.1 500 Internal Server Error Server: Zope/(Zope 2.8.0-final, python 2.3.5, linux2) ZServer/1.1 Date: Fri, 29 Jul 2005 12:53:00 GMT Bobo-Exception-Line: 877 Content-Length: 2020 Bobo-Exception-Value: See the server error log for details Content-Language: pl Bobo-Exception-File: ClientStorage.py Bobo-Exception-Type: ZODB.POSException.ConflictError (...) <TD WIDTH="90%"> <H2>Site Error</H2> An error was encountered while publishing this resource. ZODB.POSException.ConflictError Sorry, a site error occurred.Traceback (innermost last): <ul> Module ZPublisher.Publish, line 187, in publish_module_standard <li> Module ZPublisher.Publish, line 161, in publish</li> <li> Module ZPublisher.Publish, line 161, in publish</li> <li> Module ZPublisher.Publish, line 161, in publish</li> <li> Module ZPublisher.Publish, line 151, in publish</li> <li> Module Zope2.App.startup, line 158, in zpublisher_exception_hook</li> <li> Module ZPublisher.Publish, line 119, in publish</li> <li> Module Zope2.App.startup, line 215, in commit</li> <li> Module transaction._manager, line 84, in commit</li> <li> Module transaction._transaction, line 382, in commit</li> <li> Module transaction._transaction, line 380, in commit</li> <li> Module transaction._transaction, line 428, in _commitResources</li> <li> Module ZODB.Connection, line 637, in tpc_vote</li> <li> Module ZEO.ClientStorage, line 893, in tpc_vote</li> <li> Module ZEO.ClientStorage, line 877, in _check_serials</li> </ul>ConflictError: database conflict error (oid 0x0299de, class Products.DCOracle2.DA.Procedure, serial this txn started with 0x035ef744f3d9b366 2005-07-29 12:52:57.152436, serial currently committed 0x035ef744fe4886cc 2005-07-29 12:52:59.597650) <HR NOSHADE> Troubleshooting Suggestions (...) ----------------------------------------------------------------- -- Maciej Wisniowski

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problems with zope 2.8.0 on windows
by Hanssens Filip 08 Aug '05

08 Aug '05

Hi, I installed zope 2.8.0 on a windows 2000 workstation. I used the file zope-2.8.0-fin al-win32.exe, installed the zope windows service and installed a zope instance. Since there are other zope version running on my pc I changed the port to 8083 by setting the port-base to 3 in the file zope.conf of the zope instance\etc directory When starting zope on http://localhost:8083/ I get no response. When I look to the windows zope service it starts not always automatically. Could there by a problem with the zope service of windows or the there another problem with zope 2.8.0 on windows? Filip Hanssens Webdesigner / Information Officer Metafro Infosys Koninklijk Museum voor Midden-Afrika tel.: +32/2/7695776 fax.: +32/2/7695242 e-mail: filip.hanssens(a)africamuseum.be ########################################### This message has been scanned by ICT - Africa Museum ________________________________________ 8/8/2005 - Filtered through antispam by ICT

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Is there a windows version of zope 2.8.1b1?
by Litao Wei 07 Aug '05

07 Aug '05

Hi all, I want to try the new feature of zope 2.8.1, but zope.org only contains the source version. where I can get a windows version?

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AttributeError in DocFinder 1.0.3
by Kate Legere 07 Aug '05

07 Aug '05

I've installed DocFinder 1.0.3 but I'm getting an error when I try to instantiate. I'm running (Zope 2.6.2 (binary release, python 2.1, linux2-x86), python 2.1.3, linux2) Python Version 2.1.3 (#1, Sep 19 2002, 13:15:46) [GCC egcs-2.91.66 19990314/Linux (egcs-1.1.2 release)] I also found standard_template.pt on my local installation and copied it to the same directory on the server but that doesn't help either. What do I need to add? Kate Exception Type AttributeError Exception Value standard_template.pt Traceback (innermost last): * Module ZPublisher.Publish, line 98, in publish * Module ZPublisher.mapply, line 88, in mapply * Module ZPublisher.Publish, line 39, in call_object * Module Shared.DC.Scripts.Bindings, line 252, in __call__ * Module Shared.DC.Scripts.Bindings, line 283, in _bindAndExec * Module Products.PageTemplates.PageTemplateFile, line 96, in _exec * Module Products.PageTemplates.PageTemplate, line 95, in pt_render <PageTemplateFile at /> * Module TAL.TALInterpreter, line 200, in __call__ * Module TAL.TALInterpreter, line 244, in interpret * Module TAL.TALInterpreter, line 689, in do_useMacro * Module Products.PageTemplates.TALES, line 220, in evaluate URL: addForm Line 1, Column 0 Expression: standard:'here/standard_template.pt/macros/page' Names: {'container': <__FactoryDispatcher__ instance at 8f47fb8>, 'default': <Products.PageTemplates.TALES.Default instance at 0x867d0f4>, 'here': <__FactoryDispatcher__ instance at 8f47fb8>, 'loop': <SafeMapping instance at 8e453e0>, 'modules': <Products.PageTemplates.ZRPythonExpr._SecureModuleImporter instance at 0x867cdec>, 'nothing': None, 'options': {'args': ()}, 'repeat': <SafeMapping instance at 8e453e0>, 'request': <HTTPRequest, URL=http://www2.kfpl.ca:8080/manage_addProduct/DocFinder/addForm>, 'root': <Application instance at 8df00f0>, 'template': <PageTemplateFile at />, 'traverse_subpath': [], 'user': zope} * Module Products.PageTemplates.Expressions, line 206, in __call__ * Module Products.PageTemplates.Expressions, line 194, in _eval * Module Products.PageTemplates.Expressions, line 150, in _eval __traceback_info__: here * Module Products.PageTemplates.Expressions, line 360, in restrictedTraverse __traceback_info__: {'path': ['standard_template.pt', 'macros', 'page'], 'TraversalRequestNameStack': ['page', 'macros']} AttributeError: standard_template.pt

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