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zope fastcgi connection
by Maric MICHAUD 17 May '04

17 May '04

I use zope with apache/fastcgi under debian, the trouble I have is that if no request is done to a zope instance's page for a long period (more than a day), I get an internal error with the apache log : (111)Connection refused: FastCGI: failed to connect to server "/var/www/myzope": connect() failed the only way I found to make it work again is to restart the zope instance. I tried it in socket and port mode for the same result, I also tried to play with appConnTimeout option but it failed. Any idea ? apache 1.3.29 zope 2.6.4 libapache-mod-fastcgi 2.2.10 Apache conf : <IfModule mod_fastcgi.c> FastCgiIpcDir /var/run/zope FastCgiExternalServer /var/www/myzope -host localhost:9673 -pass-header Authorization -appConnTimeout 0 #FastCgiExternalServer /var/www/myzope -socket default.soc -pass-header Authorization -appConnTimeout 0 <Location /myzope> SetHandler fastcgi-script </Location> </IfModule> Zserver conf (done with zopectl configuration files) : /usr/bin/python2.2 /usr/lib/zope/z2.py -L fr_FR -F 9673 -W 9674 -m 9675 -l /var/log/zope/default/Z2.log --pid /var/run/zope/default/Z2.pid -p /var/lib/zope/cgi-bin/default -u zope -M /var/log/zope/default/Z2-detailed.log -z /usr/lib/zope INSTANCE_HOME=/var/lib/zope/instance/default SOFTWARE_HOME=/usr/lib/zope/lib/python

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RE: Leaking HTTP requests (was: RE: [Zope] Leaking Acquisition.Im plic itAcquirerWrapper)
by Jean-Francois.Doyon＠CCRS.NRCan.gc.ca 17 May '04

17 May '04

Dieter, Argh, I don't even see the problem in your example :( (I'm having a bad day!) I'll leave the iste running throught the week-end and we'll see what shows up. "high" refcounts is somewhat arbitrary I guess ... When you say high you mean high and stable or high and growing? Right now, the only suspect class as far as refcounts (Other than the HTTP requests) is the DateTime one. I have some content ones that look high, but then they're highly used (CMFImage for example). Apart from using aq_explicit in a few places, I do also use __of__ in one case ... To do things like: def getAbstract(self): try: pt = ZopePageTemplate( '', self.abstract, 'text/html').__of__(self) cookedbody = pt() return cookedbody except: return '' Could such use cause problems? I don't see why ... It's quite straightforward. That's about as fancy as anything I do gets I'm afraid, so I'm still having a hard time imagining anything I wrote messing with Wrappers ... I make it a point to avoid them! Oh wait a minute ... How about this? pt = ZopePageTemplate( '', self.aq_explicit.intropart1, 'text/html' ).__of__(self) Could THAT be bad? I'l look into it, it'll be easy to detect. TGIF, I'm loosing morale here ... Thanks for the help! The hunt continues ... J.F. -----Original Message----- From: Dieter Maurer [mailto:dieter@handshake.de] Sent: May 14, 2004 2:28 PM To: Jean-Francois.Doyon(a)CCRS.NRCan.gc.ca Cc: stefan(a)epy.co.at; zope(a)zope.org Subject: Re: Leaking HTTP requests (was: RE: [Zope] Leaking Acquisition.Implic itAcquirerWrapper) Jean-Francois.Doyon(a)CCRS.NRCan.gc.ca wrote at 2004-5-13 15:31 -0400: >Looks like I'm actually leaking HTTP requests! I fear I brought in the "leaking HTTP requests" story... Meanwhile, I understand that whenever you leak AcquisitionWrappers you are leaking HTTP requests, too. That's because at the bottom of the acquisition chain is a REQUEST (usually an HTTPRequest). While a cycle created by storing an acquisition wrapper into REQUEST may cause this leakage, it is by far not the only potential cause. Yesterday, I found a leak in my DOM wrapper code caused by code like this: class Element(Implicit,...) __children = None def getChildren(self): '''the elements children.''' if self.__children is not None: return self.__children children = self.__children \ = NodeList([c.__of__(self) for c in self._proxy.children]) This creates a cycle between acquisition wrappers. And leaks acquisition wrappers as well as Request objects.... The major clue to solve my problem has been to look for further high reference counts for classes that are supposed to have small reference counts. In my case, I found "DOM.Document", created at a single place. That allowed me to quickly verify that I indeed leaked "DOM.Document" references (and everything below) and after I few hours, I found the code above... -- Dieter

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RE: Leaking HTTP requests (was: RE: [Zope] LeakingAcquisition.Imp licitAcquirerWrapper)
by Jean-Francois.Doyon＠CCRS.NRCan.gc.ca 16 May '04

16 May '04

OK, well I'm afraid that didn't do it for me ... I deleted the "standard_error_message" entirely, and made real sure there are no others around, and still my refcounts are steadily growing ... On to Brian's patch! Thanks, J.F. -----Original Message----- From: Chris McDonough [mailto:chrism@plope.com] Sent: May 13, 2004 5:50 PM To: Brian Lloyd Cc: Stefan H. Holek; Jean-Francois.Doyon(a)CCRS.NRCan.gc.ca; zope(a)zope.org Subject: RE: Leaking HTTP requests (was: RE: [Zope] LeakingAcquisition.ImplicitAcquirerWrapper) Tres and me were playing around with this a little and the easiest way to provoke a REQUEST leak is to do an anonymous request to a resource inside a subfolder where the subfolder has all permission acquisition turned off (and only "authenticated" granted view access). It will turn around and try to run "standard_error_message", which will fail due to security (and leak in the process). The code responsible for this is SimpleItem.raise_standardErrorMessage, which does some funky passing around/munging of traceback objects. However, "raise_standardErrorMessage" never gets called if "standard_error_message" doesn't exist in the acquisition path. If it never gets called, the leak does not occur. The simplest way to rid yourself of the leak temporarily is to remove "standard_error_message". On Thu, 2004-05-13 at 17:41, Brian Lloyd wrote: > Zope.org doesn't use Localizer (or Archetypes - another thing > that has come up in this thread). > > In our experience, this sort of thing has almost always turned > out to be a wrapped object ending up in the REQUEST or a wrapped > object holding onto a request for some reason. > > I've attached a quick product you can drop in to test that > theory on your own instance (just make a directory > Products/LeakBGone and drop this __init__.py into it and > restart). > > If it fixes the leak, we can extend it to do some logging and > try to figure out the root cause. I'll try it out on zope.org > as soon as I'm able. > > > Brian Lloyd brian(a)zope.com > V.P. Engineering 540.361.1716 > Zope Corporation http://www.zope.com > > > > -----Original Message----- > > From: zope-bounces+brian=zope.com(a)zope.org > > [mailto:zope-bounces+brian=zope.com@zope.org]On Behalf Of Stefan H. > > Holek > > Sent: Thursday, May 13, 2004 3:14 PM > > To: Brian Lloyd > > Cc: Jean-Francois.Doyon(a)CCRS.NRCan.gc.ca; zope(a)zope.org > > Subject: Re: Leaking HTTP requests (was: RE: [Zope] > > LeakingAcquisition.ImplicitAcquirerWrapper) > > > > > > Does zope.org use Localizer or some type of "global request" patch? > > > > Stefan > > > > > > On Donnerstag, Mai 13, 2004, at 21:42 Europe/Vienna, Brian Lloyd wrote: > > > > > FWIW - zope.org is suffering hugely from this as well, so > > > I'm following this thread eagerly ;) > > -- > > The time has come to start talking about whether the emperor is as well > > dressed as we are supposed to think he is. /Pete McBreen/ > > > > > > _______________________________________________ > > 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 ) > > > > ______________________________________________________________________ > _______________________________________________ > 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 2.7 - XML export
by Andreas Tille 16 May '04

16 May '04

Hello, I tried to use the XML export feature of an ordered Folder tree but got: Traceback (innermost last): Module ZPublisher.Publish, line 100, in publish Module ZPublisher.mapply, line 88, in mapply Module ZPublisher.Publish, line 40, in call_object Module OFS.ObjectManager, line 502, in manage_exportObject Module OFS.XMLExportImport, line 58, in exportXML Module OFS.XMLExportImport, line 33, in XMLrecord Module Shared.DC.xml.ppml, line 253, in load Module pickle, line 872, in load Module pickle, line 1209, in load_appends AttributeError: List instance has no attribute 'extend' Any hint what might went wrong here? Kind regards Andreas.

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Re: [Zope] Rewrite problem
by Dieter Maurer 16 May '04

16 May '04

Please stay on the list... Readded... Sam Bright wrote at 2004-5-14 14:19 -0800: >> A better one: >> >> RewriteRule ^/blog/.* >http://127.0.0.1:8080/VirtualHostBase/http/myservername:80/VirtualHostRoot$0 >> ></VirtualHost> > > Okay, I changed it and it still doesn't work. Sure, as it was not the primary problem. >> >Whenever I try to access my server I get: >> > >> >Forbidden >> >You don't have permission to access / on this server. >> >> This error message does not come from your VHost. >> Almost surely, you VHost definition was not recognized. >> >> "httpd" has an option to verify VHost definitions. > > Any idea what the command is? Sorry for being such a newbie. Even newbies can read the manual themselves. "man httpd" (long description) or "httpd -h" (short description) -- Dieter

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zope fstcgi lose connection
by Maric MICHAUD 16 May '04

16 May '04

I use zope with apache/fastcgi under debian, the trouble I have is that if no request is done to a zope instance page for a long period, I get an internal error with the apache log : (111)Connection refused: FastCGI: failed to connect to server "/var/www/myzope": connect() failed I tried it in socket and port mode for the same result, I also tried to play with appConnTimeout option but it failed. Any idea ? apache 1.3.29 zope 2.6.4 libapache-mod-fastcgi 2.2.10 Apache conf : <IfModule mod_fastcgi.c> FastCgiIpcDir /var/run/zope FastCgiExternalServer /var/www/myzope -host localhost:9673 -pass-header Authorization -appConnTimeout 0 #FastCgiExternalServer /var/www/myzope -socket default.soc -pass-header Authorization -appConnTimeout 0 <Location /myzope> SetHandler fastcgi-script </Location> </IfModule> Zserver conf (done with zopectl configuration files) : /usr/bin/python2.2 /usr/lib/zope/z2.py -L fr_FR -F 9673 -W 9674 -m 9675 -l /var/log/zope/default/Z2.log --pid /var/run/zope/default/Z2.pid -p /var/lib/zope/cgi-bin/default -u zope -M /var/log/zope/default/Z2-detailed.log -z /usr/lib/zope INSTANCE_HOME=/var/lib/zope/instance/default SOFTWARE_HOME=/usr/lib/zope/lib/python

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acl_users and sql
by William Herring 15 May '04

15 May '04

I would like to use the user login from acl_users as a key to search by in an SQL method. How do I call the variable of the particular user logged in? For example, if user 'TestUser' is logged, I want the method to ultimately look like: select * from dummytable where user='TestUser' How do I do this? What is the variable for the user in acl_users folder?

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Re: [Zope-DB] Refresh problem
by hawelek_tlen 15 May '04

15 May '04

Hi David, thanks for answer, I know this meta-refresh, but I want to refresh only when I'm calling this site, regards, Adam

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Python Script Question
by Laura McCord 15 May '04

15 May '04

I am starting out with this in my script RESPONSE = context.REQUEST.RESPONSE success = 0 for id in context.objectIds(): success = success + 1 return success All this does is count the contents in the folder. However, how do you specify what content to count. For instance, I do not want this script to count itself in the folder contents but I want it to include everything else. Any suggestions? Thanks, Laura

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FTP Gateway/Proxy for Zope
by Florian Schulze 14 May '04

14 May '04

Hi! I have the following wishes and can't find a tool which can do it for me. 1. Virtual Hosts 2. Port Forwarding 3. Path rewriting for different roots depending on host and/or user 4. Active FTP -> Passive FTP and Passive FTP -> Active FTP 5. All of this transparently 6. Has to work under Linux An example: Client connects with active FTP to ftp://www.myhost.com which is redirected to ftp://localhost:8021/www_myhost_com with passive FTP (Zope). Another host might be redirected to another FTP server on localhost with another port and root directory. Could someone recommend a tool for this? If not, then I have to write it myself. I thought about doing it with twisted. On which other newsgroups could I post this? Thanks and regards, Florian Schulze

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