Mailman 3 June 2003 - Twisted

[Twisted-Python] Hacking imap
by Anders Hammarquist 25 Jun '03

25 Jun '03

Hi, Just wanted to give a heads-up that I intend feed you guys a patch for the imap server to properly handle literals in all places they need to be handled towards the end of this week. Unfortunately, it's quite a large change since it requires a complete restructuring of how arguments are parsed. Basically, instead of having each command parse it's own arguments, the idea is to list what arguments each command expects, and have the command dispatcher parse the arguments and possibly request continuation for literals. I expect to have more patches coming, as I need this for the project we're working on. It'd be nice if we could coordinate the work, so we don't end up with incompatible fixes and improvements, and try to avoid duplicate work. /Anders -- -- Of course I'm crazy, but that doesn't mean I'm wrong. Anders Hammarquist | iko(a)cd.chalmers.se Physics student, Chalmers University of Technology, | Hem: +46 31 88 48 50 G|teborg, Sweden. RADIO: SM6XMM and N2JGL | Mob: +46 707 27 86 87

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[Twisted-Python] Re: Getting Stories Straight (RPYs)
by W.J. 25 Jun '03

25 Jun '03

> > You don't want to bounce offline all users currently using the IMAP and > > IRC servers every time you make a small change to a web page. > > If you're doing development on the live server the users are using, > bouncing them off every now and then is a good way to let them know > they are morons for using such a sketchy server. Agreed, users deserve to be kicked real hard once in a while, and application updates are a socially accepted moment in that. Very much in the same way that moving a chair or changing a lightbulb is reason enough for kicking everyone out of the building. ... > > The rebuild() solution mentioned by Christopher Armstrong mostly takes > > care of that. > > The rebuild() solution will probably consume most of the start-up time. You don't have to rebuild all, just the part that has changed, which is the presentation layer, most of the time. You're missing the point. Even live servers sometimes have bugs that need to fixed *fast*, and customers love you if you can roll in change requests quickly without bringing down everything. > > On-the-fly reloading can be hell, but the ubiquitous "server reboot" is > > what I *really* disgusted in most J2EE implementations. I really hope > > twisted is not going to enforce this. > > Twisted is not about enforcement. Twisted is about mocking people who are > using the technology in non-optimal ways. It is good to be sceptical of people their coding practices. But the 'one true way' is still to be found. Wladimir

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Antwort: Re: [Twisted-Python] read form parameter inside a rpy-script
by mmoellenbeck＠plus.de 25 Jun '03

25 Jun '03

Thank you ;-) Martin Moellenbeck An: twisted-python(a)twistedmatrix.com Kopie: Thema: Re: [Twisted-Python] read form parameter inside a rpy-script Andrew Bennetts <andrew-twisted(a)puzzling.org> Gesendet von: twisted-python-admin(a)twistedmatrix.com 25.06.2003 14:41 Bitte antworten an twisted-python On Wed, Jun 25, 2003 at 02:01:41PM +0200, mmoellenbeck(a)plus.de wrote: > Hi, > > I try to read form-parameter inside a rpy-script. > > Can anybody help me? Resource scripts have been a rather active topic of discussion on the list the past few days -- you really should check the archives. You probably don't want to be using them, as explained by Moshe Zadka in this post: http://twistedmatrix.com/pipermail/twisted-python/2003-June/004693.html Regarding form parameters, you'll find them in the .args attribute of a request. A trivial example would be: from twisted.web.resource import Resource from twisted.web.microdom import escape class RequestArgResource(Resource): def render(self, request): return 'request.args: ' + escape(repr(request.args)) -Andrew. _______________________________________________ Twisted-Python mailing list Twisted-Python(a)twistedmatrix.com http://twistedmatrix.com/cgi-bin/mailman/listinfo/twisted-python

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[Twisted-Python] read form parameter inside a rpy-script
by mmoellenbeck＠plus.de 25 Jun '03

25 Jun '03

Hi, I try to read form-parameter inside a rpy-script. Can anybody help me? Thanks. Martin Moellenbeck

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Re: [Twisted-Python] Getting Stories Straight (RPYs)
by W.J. 25 Jun '03

25 Jun '03

> is a perfectly sane short RPY which will allow you to code properly. > However, I tend to dislike this kind of solutions. While in CGI, > this kind of strategy makes sense, in real web applications, it > starts to break down. My vague memories of using HTML::Mason > and OpenACS indicate that at one point I was so tired of remembering > which parts were cached and which parts weren't that I actually > did restart the web server whenever I wanted to test my changes. It all starts to make sense again with servers that combine several services into one application, especially if some involve persistent connections. You don't want to bounce offline all users currently using the IMAP and IRC servers every time you make a small change to a web page. Or, if you have a large application which takes serious time to startup, the waiting gets you mad in no time. > I usually do my web development with a web browser open, and whenever > I change I restart the server, and reload the page. Moving from two > clicks per change to one doesn't seem worth remembering what's > cached and what isn't, sorry... :) The rebuild() solution mentioned by Christopher Armstrong mostly takes care of that. On-the-fly reloading can be hell, but the ubiquitous "server reboot" is what I *really* disgusted in most J2EE implementations. I really hope twisted is not going to enforce this. Wladimir

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[Twisted-Python] twisted.world is missing ??
by Philippe Lafoucrière 25 Jun '03

25 Jun '03

Hi, I was trying to test Issues. But in issues-admin, there's a twisted.world import which fails on my machine (gentoo Linux 1.4, twisted 1.0.5). Moreover : >>> from twisted import world Traceback (most recent call last): File "<stdin>", line 1, in ? ImportError: cannot import name world >>> thought it was a gentoo bug. But, after downloading Twisted-1.0.5.tar.bz2 : $ tar tjpf Twisted-1.0.5.tar.bz2 |grep world $ world disappeared ??? -- Philippe Lafoucrière <lafou(a)wanadoo.fr> InFuzzion

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CVS Tag (was Re: [Twisted-Python] PATCH: doc/historic/index.html reality link)
by Lee Harr 25 Jun '03

25 Jun '03

> > I think that patch I sent in may have had line-wrap problems... > > I updated and the link to the reality doc is still off by one. > >Hmm, I did an update on a separate machine and it looks ok from here: > > >This is version 1.5 of doc/historic/index.html .. is that the same version >you're seeing? > >puzzled, > -Brian Wow, I am really glad I looked in to this.... Looks like my cvs copy was set to use a tag from 2 weeks ago (June 10? -- D2003.06.10.04.00.00) Not sure how it got that way (bit of a cvs newbie :o) I used cvs update -r HEAD -d -P and now when I look in the CVS/Tag files it shows NHEAD Is that the correct one? Can I now just cvs update -d -P to continue getting the latest revisions? Thanks for your time. _________________________________________________________________ Tired of spam? Get advanced junk mail protection with MSN 8. http://join.msn.com/?page=features/junkmail

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[Twisted-Python] Issues 0.1 alpha release
by Jonathan Lange 25 Jun '03

25 Jun '03

Issues, a issue tracking system built on Twisted technology, has been released for the first time today! Homepage: http://www.twistedmatrix.com/users/jml Download: http://www.twistedmatrix.com/users/jml/Issues-0.1alpha1.tar.gz Demo: http://www.twistedmatrix.com/users/jml.twistd (TRY IT!) This is an alpha release, so please don't trust it with important, backup-less data. The intent of this release is to get people playing with Issues, to identify usage bugs and missing features. The full 0.1 release, once the most crucial of these bugs have been dealt with. Hopefully in a week or two. Issues does have an email notification feature, but this has been disabled on the demo, as I didn't want to send out automated emails from twistedmatrix.com without first clearing it with the relevant authorities. cheers, jml

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[Twisted-Python] mainloop exception
by Jp Calderone 25 Jun '03

25 Jun '03

Using conch: exarkun@pyramid:~$ exit logout Traceback (most recent call last): File "/usr/local/bin/conch", line 32, in ? run() File "/home/exarkun/projects/python/Twisted/twisted/scripts/conch.py", line 176, in run reactor.run() File "/home/exarkun/projects/python/Twisted/twisted/internet/default.py", line 123, in run self.mainLoop() File "/home/exarkun/projects/python/Twisted/twisted/internet/default.py", line 134, in mainLoop self.doIteration(t) --- <exception caught here> --- File "/home/exarkun/projects/python/Twisted/twisted/internet/default.py", line 439, in doSelect [], timeout) exceptions.ValueError: I/O operation on closed file Connection to twistedmatrix.com closed. Reproducable, but not on every run on conch. I am using connection sharing (conch --noshell --fork), python2.3b1+, current CVS HEAD of Twisted. The process controlling the shared connection survives the exception. Jp -- A sad spectacle. If they be inhabited, what a scope for misery and folly. If they be not inhabited, what a waste of space. -- Thomas Carlyle, looking at the stars

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[Twisted-Python] Loading pageproducers dynamically
by Thomas Weholt 25 Jun '03

25 Jun '03

I'm porting a project to Twisted where I loaded what was then called pageproducer, similar to subclasses of Resource in Twisted. They were in a given folder and located, created an instance of at run time and stored in a lookup-structure. The files were organized something like this : www/index.py www/folder1/hello1.py www/folder2/subfolder3/hellotoo.py [ ... etc ...] www/index.py maps to index.html, www/folder1/hello1.py to /folder1/hello.html etc. The main point being that the server didn't know what classes to import and create before run time. How can I create someting similar to this, using Resource's putChild etc and keeping the things discussed lately about keeping python modules out of the webtree ?? I want my users to be able to add pages with ease, not having to edit import statements in the main modules, put simple doing something like this in a module named helloworld.py, located in www/test/helloworld.py : class helloworld(Resource): def render(self, request): return 'hello world' and pointing your browser to /test/helloword.py should then show "Hello world". Most examples discussed lately has imported all needed modules explicitly at start up. My setup needs to be more dynamic. Thomas

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