Re: [Zope-dev] Re: AdaptableStorage
How about having a seperate process which just watched the files and notifed Zope when they changed? A definite possibility. It might even just poke an URL to send the notification. Since every storage will have its own unique notification scheme, which may be more or less inefficient (worst case scenario, periodic polling of entire storage for recently modified items), it might make sense to have a notification server. It would make it simpler for users to create custom storage transaction alert handlers. For different cache invalidation scenarios, Zope could poll the server as well as get poked. seb ___ Zope-Dev maillist - [EMAIL PROTECTED] 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 )
Re: [Zope-dev] Re: AdaptableStorage
seb bacon wrote: Since every storage will have its own unique notification scheme, which may be more or less inefficient (worst case scenario, periodic polling of entire storage for recently modified items), it might make sense to have a notification server. It would make it simpler for users to create custom storage transaction alert handlers. For different cache invalidation scenarios, Zope could poll the server as well as get poked. I'd prefer just to have a method somewhere that, as Shane suggested, could be hit by URL, etc. A whole seperate server seems like overkill... cheers, Chris ___ Zope-Dev maillist - [EMAIL PROTECTED] 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 )
Re: [Zope-dev] Can't return / publish object of a dictionary?
Jeff Rush wrote: Yeah, the new property type in Python 2.2 is pretty cool, but out of range for use under Zope at the moment. The ExtensionClass requirement for persistence eliminates using it with new style Python classes. Why? I can't see why ExtensionClass should not work with the new property type. Or is the problem specifically to do with persisting a property? In any case, it is certainly out of range for Zope since Zope does not yet officially support python 2.2 - I just mentioned it out of interest. Cheers, seb ___ Zope-Dev maillist - [EMAIL PROTECTED] 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 )
Re: [Zope-dev] Re: AdaptableStorage
Chris Withers wrote: seb bacon wrote: Since every storage will have its own unique notification scheme, which may be more or less inefficient (worst case scenario, periodic polling of entire storage for recently modified items), it might make sense to have a notification server. It would make it simpler for users to create custom storage transaction alert handlers. For different cache invalidation scenarios, Zope could poll the server as well as get poked. I'd prefer just to have a method somewhere that, as Shane suggested, could be hit by URL, etc. A whole seperate server seems like overkill... But what about, for example, databases which don't have an efficient way to do callbacks to external applications? You may have to do a SELECT id FROM tblObjects WHERE timestamp some_time or a similar kludge from a polling server. You may want this server to reside at the same location as the RDBMS, rather than as a thread in Zope. I'm worrying that if we are not to be restricted to Oracle or bleeding edge kernels, the notification part of the cache invalidation scheme may be (a) kludgy, (b) inefficient, and (c) utterly different in design between different storages. A server could offer a layer of indirection which could provide a single API for Zope to see, an opportunity to take the process load somewhere else, and a pluggable interface for writers of storages. On the other hand, I don't know much about RDBMS callbacks or filesystem accounting, so I could be inventing a problem to solve :-) seb ___ Zope-Dev maillist - [EMAIL PROTECTED] 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] testMaxListUsers failure
Who knows more about this test failure in the Zope 2.7 test suite? == FAIL: testMaxListUsers (testUserFolder.UserFolderTests) -- Traceback (most recent call last): File testUserFolder.py, line 57, in testMaxListUsers AssertionError: Did not raise overflow error -- Ran 2089 tests in 1201.517s FAILED (failures=1) == OVERALL FAILED (total failures=1) --Guido van Rossum (home page: http://www.python.org/~guido/) ___ Zope-Dev maillist - [EMAIL PROTECTED] 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] Zope reference counts
Hi, I'm currently optimizing/analyzing a Zope server and I noticed the following: The number of references to specific objects (in this case specifically Squishdot comments) increases almost linear with the number of threads. Does this mean each thread keeps it's own cache pool of objects? Do these references point to the same object instances, or are these copied as well? I have the impression the memoryconsumption grows with the number of threads - is this true? Cheers Ivo -- Drs. I.R. van der Wijk -=- Brouwersgracht 132 Amaze Internet Services V.O.F. 1013 HA Amsterdam, NL -=- T +31-20-4688336 F +31-20-4688337Linux/Web/Zope/SQL/MMBase W http://www.amaze.nlE [EMAIL PROTECTED] Network Solutions W http://vanderwijk.info E [EMAIL PROTECTED] Consultancy PGP http://vanderwijk.info/pgp -=- ___ Zope-Dev maillist - [EMAIL PROTECTED] 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 )
Re: [Zope-dev] Zope reference counts
On Tuesday 21 January 2003 4:14 pm, Ivo van der Wijk wrote: Does this mean each thread keeps it's own cache pool of objects? yes Do these references point to the same object instances, or are these copied as well? They are independant copies I have the impression the memoryconsumption grows with the number of threads - is this true? yes Cheers I hope this helps -- Toby Dickenson http://www.geminidataloggers.com/people/tdickenson ___ Zope-Dev maillist - [EMAIL PROTECTED] 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] Zope anonymous CVS temporarily offline
Hi all, Due to the CVS vulnerabilities disclosed today, we have temporarily shut down anonymous CVS access to cvs.zope.org through pserver. We'll reenable this when we have upgraded CVS on the server. People with write access through SSH and the web interface at http://cvs.zope.org are still available. -- Martijn Pieters | Software Engineer mailto:[EMAIL PROTECTED] | Zope Corporation http://www.zope.com/ | Creators of Zope http://www.zope.org/ - ___ Zope-Dev maillist - [EMAIL PROTECTED] 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] Registering Product with Control Panel
Okay, I've got a product (Basic content object) Called HTMLBlock. When I start my ZEO Client with the product installed I don't recieve any error messages. The product is listed in the Select type to add... menu. However if I try to add an instance of the Product I recieve an AttributeError on HTMLBlock. After a little poking around I realized that the product is not listed in the /Control_Panel/Products/ list. The traceback I get when trying to add an instance is below. Thanks, -Brian Traceback (innermost last): File /data/www/Zope.mysql.pes161.HB10/src/Zope-2.5.1-src/lib/python/ZPublisher/Publish.py, line 89, in publish File /data/www/Zope.mysql.pes161.HB10/src/Zope-2.5.1-src/lib/python/ZPublisher/BaseRequest.py, line 278, in traverse File /data/www/Zope.mysql.pes161.HB10/src/Zope-2.5.1-src/lib/python/App/FactoryDispatcher.py, line 30, in __bobo_traverse__ File /data/www/Zope.mysql.pes161.HB10/src/Zope-2.5.1-src/lib/python/App/Product.py, line 66, in _product (Object: Products) AttributeError: HTMLBlock ___ Zope-Dev maillist - [EMAIL PROTECTED] 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] Re: [Zope-Coders] Zope anonymous CVS temporarily offline
On Tue, 21 Jan 2003, Martijn Pieters wrote: Due to the CVS vulnerabilities disclosed today, we have temporarily shut down anonymous CVS access to cvs.zope.org through pserver. We'll reenable this when we have upgraded CVS on the server. People with write access through SSH and the web interface at http://cvs.zope.org are still available. Adam has upgraded the CVS installation and put pserver back online, so public CVS operations should be back to normal... -- Ken [EMAIL PROTECTED] ___ Zope-Dev maillist - [EMAIL PROTECTED] 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 )
Re: [Zope-dev] [PATCH] Forking daemon in debug mode, and new startscripts
On Tue, 2003-01-21 at 18:45, Adrian van den Dries wrote: But this means I can't really write a start script that works (or makes sense) with debug mode both on and off. Redirecting stderr to EVENT_LOG_FILE doesn't really make sense if we're detaching, and is ugly, etc.. I could write some shell polava to figure it out, but: FWIW, I often use: z2.py -Z0 STUPID_LOG_FILE= ... which prevents Zope from detaching from the terminal but doesn't imply debug mode. This may only work on recent checkouts, the semantics of -Z have changed recently. Maybe the debug flag is misnamed? All it really means is don't detach. It unfortunately means lots of things, all of which are implicitly twisted together in a huge mess, much of it even predating Zope's open source release. Yes. I would much prefer an explicit flag for each, because I run a number of dev Zopes on a number of boxes to which I only have ssh access, and I don't want to have to remember to play games with my stdio, or restart Zope if I restart screen, etc. Yup. Speaking of the (side-)effects of debug mode, what exactly are they? Is it just the automatic re-loading of DTMLFiles and PageTemplates from disk? It's that... and, unfortunately, god knows what else. To find out for sure, we'd need to audit the codebase (looking mostly for Z_DEBUG_MODE and __debug__). I'd like to address these problems for Zope 2.7, but I doubt it's going to be possible in the short term. - C ___ Zope-Dev maillist - [EMAIL PROTECTED] 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 )
Re: [Zope-dev] [PATCH] Forking daemon in debug mode, and new start scripts
On January 21, Chris McDonough wrote: It unfortunately means lots of things, all of which are implicitly twisted together in a huge mess I wasn't going to say it. ;-) It's that... and, unfortunately, god knows what else. To find out for sure, we'd need to audit the codebase (looking mostly for Z_DEBUG_MODE and __debug__). I'd like to address these problems for Zope 2.7, but I doubt it's going to be possible in the short term. Hrm, a refactor, eh? adriand@pita:~/Zope-2.6.0b1-src$ egrep -Iir 'principia|bobo' * | wc -l 345 ;-) a. -- Adrian van den Dries [EMAIL PROTECTED] Development team www.dev.flow.com.au FLOW Communications Pty. Ltd. www.flow.com.au ___ Zope-Dev maillist - [EMAIL PROTECTED] 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 )
Re: [Zope-dev] [PATCH] Forking daemon in debug mode, and new start scripts
But this means I can't really write a start script that works (or makes sense) with debug mode both on and off. I don't think that's a valid use case anyway. Remember, debug mode really means don't daemonize and nothing more. This for use by a developer who wants to see possible exceptions, print statements and other stuff that goes to stdout/stderr. Yes. I would much prefer an explicit flag for each, because I run a number of dev Zopes on a number of boxes to which I only have ssh access, and I don't want to have to remember to play games with my stdio, or restart Zope if I restart screen, etc. Speaking of the (side-)effects of debug mode, what exactly are they? Is it just the automatic re-loading of DTMLFiles and PageTemplates from disk? I've tried to explain already -- debug mode for ZEO *only* determines whether the ZEO server goes into daemon mode or not. There may be a Zope debug mode, but it's not related (even if it uses the same envariable). --Guido van Rossum (home page: http://www.python.org/~guido/) ___ Zope-Dev maillist - [EMAIL PROTECTED] 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 )
Re: [Zope-dev] [PATCH] Forking daemon in debug mode, and new start scripts
On Tue, Jan 21, 2003 at 07:26:11PM -0500, Chris McDonough wrote: z2.py -Z0 STUPID_LOG_FILE= ... which prevents Zope from detaching from the terminal but doesn't imply debug mode. This may only work on recent checkouts, the semantics of -Z have changed recently. Interesting! In 2.6.0 the -Z flag is documented thus: -Z 0 or 1 UNIX only! This option is ignored on Windows. This option controls whether a management process will be created that restarts Zope after a shutdown or crash. If the argument to -Z is non-null (e.g. -Z1 or -Zyes), a management process will be used. If the argument to -Z is -, or 0, (e.g. -Z- or -Z0), a management process will not be used. On UNIX, the default behavior is to create a separate management process (e.g. -Z1) if the -Z option is not specified. (Note: the -Z option in Zopes before Zope 2.6 used to be used to specify a pidfile name for the management process. This pidfile no longer exists). Speaking of the (side-)effects of debug mode, what exactly are they? Is it just the automatic re-loading of DTMLFiles and PageTemplates from disk? It's that... and, unfortunately, god knows what else. To find out for sure, we'd need to audit the codebase (looking mostly for Z_DEBUG_MODE and __debug__). at least in 2.6 it also toggled whether tracebacks were displayed openly (debug mode) or embedded in an html comment. I'd like to address these problems for Zope 2.7, but I doubt it's going to be possible in the short term. What he said. :( -- Paul Winkler http://www.slinkp.com Look! Up in the sky! It's THE TONGUE! (courtesy of isometric.spaceninja.com) ___ Zope-Dev maillist - [EMAIL PROTECTED] 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 )
Re: [Zope-dev] [PATCH] Forking daemon in debug mode, and new start scripts
On January 21, Guido van Rossum wrote: There may be a Zope debug mode, but it's not related (even if it uses the same envariable). I'm sorry, I'm talking about Zope's debug mode. Eh? This started with your suggesting a change to ZEO/start.py, to which I objected. Oh well. What a waste of time. --Guido van Rossum (home page: http://www.python.org/~guido/) ___ Zope-Dev maillist - [EMAIL PROTECTED] 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 )
Re: [Zope-dev] [PATCH] Forking daemon in debug mode, and new start scripts
On Tue, Jan 21, 2003 at 08:07:01PM -0500, Guido van Rossum wrote: On January 21, Guido van Rossum wrote: There may be a Zope debug mode, but it's not related (even if it uses the same envariable). I'm sorry, I'm talking about Zope's debug mode. Eh? This started with your suggesting a change to ZEO/start.py, to which I objected. Oh well. What a waste of time. Now I'm lost. He posted a patch to lib/python/zdaemon/Daemon.py. Nobody said anything about ZEO/start.py. -- Paul Winkler http://www.slinkp.com ___ Zope-Dev maillist - [EMAIL PROTECTED] 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 )
