April 2002 - Zope-Dev

Re: [Zope] logging module in Zope?
by Lennart Regebro 07 Apr '02

07 Apr '02

From: "Richard Jones" <richardjones(a)optushome.com.au> > Because the Zope logging functionality is really quite poor? Ever asked > yourself why it's called "stupid" logging? It isn't. It's the logging to a file thats called "stupid file log". Thats because it is just one file that events get logged in. It's a rather simple/stupid system. But thats not all that there is to Zopes logging. 1. Peter Bengtsson still haven't said why he doesn't want to use Zopes logging system. 2. And neither have you said what is "poor" about Zopes logging. 3. And unless you want to end up with two different logging systems (which usually is not what you want, since you only end up looking in two places), you would need to use Zopes logging, but replace/extend that one with the relevant parts of python_logging or whatever logging you want.

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isecure XML-RPC handling.
by Rossen Raykov 07 Apr '02

07 Apr '02

Zope is not handling correct XML-RPC request. Even the example from http://www.zope.org/Members/Amos/XML-RPC is not working. Even worst if a request like this one in the quoted example is send to the web server it will report information about the local server installation and the internal network. Included are a request and response to www.zope.org. As one may see the server is installed in /usr/local/base/Zope-2.3.2-modified/ and it rely on 10.0.11.3:1380 for request processing. All this may be useful debug information but it is not acceptable for a production server! I'm not familiar with Zope and I cannot say is it only a configuration problem or it is a problem in the code. I do not have time to investigate that but a similar result may be achieved with the distribution offered for download. Please let me know if I have to send this bug information to some one else. I would like to be informed and when this issue is resolved so I can announce it on Bug-Traq. Regards, Rossen Raykov <cut here> $ telnet www.zope.org 80 Trying 63.102.49.33... Connected to www.zope.org. Escape character is '^]'. POST /Foo/Bar/MyFolder HTTP/1.0 Content-Type: text/xml Content-length: 95 <?xml version="1.0"?> <methodCall> <methodName>objectIds</methodName> <params/> </methodCall> HTTP/1.0 500 Internal Server Error Server: Zope/Zope 2.3.2 (source release, python 1.5.2, linux2) ZServer/1.1b1 Date: Sat, 23 Mar 2002 03:09:14 GMT Bobo-Exception-File: /var/tmp/python/python-root/usr/lib/python1.5/xmllib.py Content-Type: text/html Bobo-Exception-Type: RuntimeError Bobo-Exception-Value: <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" "http://www.w3.org/TR/REC-html40/loose.dtd"<HTML> <HEAD <TITLE>Welcometo Zope.org</TITLE <link rel="stylesheet" href="http://10.0.11.3:1380/zope_css" type="text/css" </HEAD <BOD Content-Length: 6864 Bobo-Exception-Line: 748 <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" "http://www.w3.org/TR/REC-html40/loose.dtd"> <HTML> <HEAD> <TITLE>Welcome to Zope.org</TITLE> <link rel="stylesheet" href="http://10.0.11.3:1380/zope_css" type="text/css"> </HEAD> <BODY BGCOLOR="#FFFFFF" TEXT="#000000" LINK="#000066" VLINK="#606060" TOPMARGIN="0" LEFTMARGIN="0" MARGINWIDTH="0" MARGINHEIGHT="0"> <BASEFONT FACE="Verdana, Arial, Helvetica, sans-serif" SIZE="2"> <TABLE BORDER="0" CELLPADDING="0" CELLSPACING="0" > <TR> <TD WIDTH="10" BGCOLOR="#6699cc" ALIGN=CENTER> </TD> <TD COLSPAN="2" BGCOLOR="#6699CC" VALIGN="TOP" WIDTH="165"><A HREF="/"><IMGSRC="/Images/zopecom.gif" ALT="Zope" ALIGN="ABSMIDDLE" WIDTH="150" HEIGHT="63" BORDER="0"></A></TD> <TD BGCOLOR="#6699CC" VALIGN="TOP" ALIGN="RIGHT" xWIDTH="99%" CLASS="welcome"> <p class="welcome"> <a class="globalmenu" href="http://www.zope.com">Business Services</A> | <A CLASS="globalmenu" HREF="/SiteIndex/searchForm">Search</A> | <a CLASS="globalmenu" href="/Products">Download</a> | <a CLASS="globalmenu" href="/Documentation">Documentation</a> | <a CLASS="globalmenu" href="/Resources">Resources</a> | <a class="globalmenu" href="http://dev.zope.org">Development</a> <BR> <FORM ACTION="/SiteIndex/search" METHOD="GET" name="search"> Search <INPUT TYPE="text" NAME="text_content" SIZE="15">   <INPUT TYPE="IMAGE" SRC="/Images/go.gif" ALT="Go Button!" 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ZEO 1.0b6 released
by Jeremy Hylton 04 Apr '02

04 Apr '02

I have just released ZEO 1.0 beta 6. It's been almost six months since the last beta release, so it was surely time. This release fixes two bugs that Zope Corp. has recently run into in the field. See http://www.zope.org/Products/ZEO/. Here are the changes: - Fixed a bug that could cause the server to stop committing transactions for a storage. The bug occurred under the following circumstances: - A synchronous client made a tpc_begin() request. - The request arrived while another transaction was in progress. - The other transaction finished. - The client closed the connection or an unexpected error occurred while the server was handling the client's tpc_begin(). The fix is to make the code to resume a waiting transaction robust in the face of disconnects and errors. - Fixed bugs in the storage server and the trigger module that caused the server to fail with uncaught exceptions when it received a signal. The start script installs several signal handlers, so the server should not fail when those signals are received. These bugs might have occurred in other circumstances, too. Note: The signal handlers are not particularly useful with the default zLOG backend (STUPID_LOG_FILE). - Upgrade to license to ZPL 2.0 I expect to release ZEO 1.0 final next week. I'll also take this opportunity to mention future ZEO development plans. I plan to make a ZEO 1.1 release sometime this month. This release will add some debugging support and a few minor features that have proved useful in high-volume ZEO clusters. I also plan to make an alpha release of ZEO 2.0. ZEO 2 is a partial re-implementation of ZEO that provides a new RPC protocol between the ZEO clients and server. The new RPC protocol will make it possible to extend ZEO with new features and to make changes that will improve performance. ZEO 2.0 alpha 1 will be a baseline that provides the new protocol, but probably none of the features. If there are any crucial feature requests for ZEO 1.1, now is the time to make them (patches preferred :-). Otherwise, new features will be postponed to ZEO 2.0. Jeremy

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Splitter problem #3
by Petter Enholm 04 Apr '02

04 Apr '02

Hi, Like other people on the list I get problems with the splitter. I checked out latest version of Zope from cvs today, compiled wo_pcgi.py and started Zope. Running nicely. Then I shut down Zope and copied in a Data.fs file from Zope 2.4.3 - which by the way runs nicely on Zope 2.5.1-b1. When I now attempt to restart Zope I get several errors, among others this one: 2002-04-03T18:01:41 ERROR(200) Zope Couldn't install PageTemplates Traceback (innermost last): File /usr/local/Zope/lib/python/OFS/Application.py, line 639, in install_product (Object: Zope) (Info: PageTemplates) File /usr/local/Zope/lib/python/Products/PageTemplates/__init__.py, line 28, in initialize File /usr/local/Zope/lib/python/Products/PageTemplates/ZopePageTemplate.py, line 342, in initialize File /usr/local/Zope/lib/python/App/ProductContext.py, line 318, in registerHelp File /usr/local/Zope/lib/python/App/ProductContext.py, line 244, in registerHelpTopic File /usr/local/Zope/lib/python/OFS/ObjectManager.py, line 290, in _setObject (Object: Help) File /usr/local/Zope/lib/python/HelpSys/HelpTopic.py, line 79, in manage_afterAdd (Object: PageTemplate_Edit.stx) File /usr/local/Zope/lib/python/HelpSys/HelpTopic.py, line 92, in index_object (Object: PageTemplate_Edit.stx) File /usr/local/Zope/lib/python/Products/ZCatalog/ZCatalog.py, line 476, in catalog_object (Object: catalog) File /usr/local/Zope/lib/python/Products/ZCatalog/Catalog.py, line 366, in catalogObject File /usr/local/Zope/lib/python/Products/PluginIndexes/TextIndex/TextIndex.py, line 306, in index_object (Object: SearchableText) File /usr/local/Zope/lib/python/ZODB/Connection.py, line 505, in setstate SystemError: Failed to import class Splitter from module Products.PluginIndexes.TextIndex.Splitter.ZopeSplitter I checked the directory containing ZopeSplitter and I saw that the __init__.py file was empy. I copied on the one from Zope-2.5.1-b1 - and Zope starts without problems. I am curious now, what is the problem here ? Can I continue running with the __init__.py from older Zope version or is there other things that must be done to my installation. Best regards Petter Enholm Snapper

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Better tracebacks proposal
by Shane Hathaway 03 Apr '02

03 Apr '02

I've created a proposal that details what I'm working on to improve tracebacks for Zope 2.6. (A lot of the work is also going into Zope 3X.) http://dev.zope.org/Wikis/DevSite/Proposals/BetterTracebacks Everyone who is interested in improving Zope's tracebacks, please review the proposal and comment. Shane

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Sat�l�k Daire (Sahibinden)
by Recep Do�an 03 Apr '02

03 Apr '02

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Re: [Zope-dev] ding, dong, the segfault is dead. Patch attached
by Anthony Baxter 03 Apr '02

03 Apr '02

> Nice to hear. Is there any change that this patch will be included in > the next Zope Binary release? Well, there will be a python 2.1.3 release for this fix, so I'd imagine that there will be a binary release from that... > The beast is killed! Finally! :) do I hear the sound of the next killer mongrel bug warming up, just offstage? Anthony -- Anthony Baxter <anthony(a)interlink.com.au> It's never too late to have a happy childhood.

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RE: [Zope-dev] Why are ZClasses bad?
by Bjorn Stabell 03 Apr '02

03 Apr '02

I would really like to see a hybrid between ZClasses and the CMF's portal_types, so that you can define methods in the Python class that you want portal_type instances of this class to be able to overload. I'm currently abusing the CMF portal_types' actions to "overload" methods of these types. This makes it possible for CMF portal_types to override some of the Python class' methods; that's usually all I need. The methods that you want to be able to overload have to look for a specific CMF action (for that portal_type) and call the skin method that is defined for that action, similar to the way the CMF overloads index_html/view. Regards, -- Bjorn -----Original Message----- From: Joachim Werner [mailto:joe@iuveno-net.de] Posted At: Wednesday, April 03, 2002 17:41 Posted To: Zope Developer Conversation: [Zope-dev] Why are ZClasses bad? Subject: Re: [Zope-dev] Why are ZClasses bad? Hi! I guess ZClasses are not "evil" or so. But as somebody who has worked with ZClasses for a long time and then switched to Python Products instead, I see a lot of problems/disadvantages ZClasses have: - Most important: It is rather hard to change the base classes with ZClasses. In Python, you can do that very easily. - Copy&paste programming does not work with ZClasses. With Python Products, I can start writing my own version of an existing Product by just searching and replacing all the occurences of the original Product name by my own one. With ZClasses, copying an existing ZClass and changing it to fit will not work well. - If you use a decent editor (I am currently using PythonWin on Windows), it is much more convenient to have all the methods of your class in just one file than having to drill down into the ZMI and search for individual Scripts (Python) or DTML Methods - Debugging Python code is easier than debugging ZClasses. E.g., you can use a real debugger, or just add temporary print statements to the code. With Python code, the tracebacks are much more helpful than they are with ZClasses, especially if you use DTML ... - Working from Python gives you MUCH more power, and the code usually is more compact. - You can use CVS for the code, and there is a rather strict separation between instances of your Product/class and the code ... - ZClasses behave "strange" with regard to nested acquisition. I experienced cases where two instances of a ZClass acquired from each other in a way they shouldn't ... - ZClasses are relatively slow, especially if you use other ZClasses as base classes of ZClasses. One of the great disadvantages of Python-based Products was that you had to permanently restart your Zope to see the changes in action. But now we have "refresh", which works great. That said, I can still imagine using ZClasses together with a custom-built Python-based base class. They are over-the-web, which is their greatest advantage. For Zope 3, I'd suggest a complete redesign of ZClasses to offer something similar without the disadvantages ... ----- Original Message ----- From: "Dario Lopez-Kästen" <dario(a)ita.chalmers.se> To: <zope-dev(a)zope.org> Sent: Wednesday, April 03, 2002 11:20 AM Subject: [Zope-dev] Why are ZClasses bad? Hello! I keep hearing people argue that ZClasse are bad, and I am curious as to why they are. I recall something about ZClasses and the catalog, but are there any other "badness" with ZClasses? /dario - curious - -------------------------------------------------------------------- Dario Lopez-Kästen, dario(a)ita.chalmers.se IT Systems & Services System Developer/System Administrator Chalmers University of Tech. _______________________________________________ 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 ) _______________________________________________ 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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re: [Zope-dev] ding, dong, the segfault is dead. Patch attached
by Martijn Jacobs 03 Apr '02

03 Apr '02

Hello leo, > I just put this patch up in production environment and it's been up for > more than 1h30m now, which for me is enough indication that it's in fact > the final solution to the problem. Nice to hear. Is there any change that this patch will be included in the next Zope Binary release? I would love to apply this patch on a python source, compile it, and put it away, but you don't want to do that on a 28K8 PC Anywhere connection, without any compilers installed. So I'm hoping on a very soon Zope release with this version of python. The patch from Matt is OK, but the peformance of heavy database access is dramatic, so I need to upgrade real soon..... The beast is killed! Finally! :) Martijn.

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Why are ZClasses bad?
by Dario Lopez-Kästen 03 Apr '02

03 Apr '02

Hello! I keep hearing people argue that ZClasse are bad, and I am curious as to why they are. I recall something about ZClasses and the catalog, but are there any other "badness" with ZClasses? /dario - curious - -------------------------------------------------------------------- Dario Lopez-Kästen, dario(a)ita.chalmers.se IT Systems & Services System Developer/System Administrator Chalmers University of Tech.

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