Mailman 3 May 2006 - Twisted

[Twisted-Python] Question on pamauth.py
by Terry Jones May 3, 2006

May 3, 2006

I'm planning to use twisted.cred and just went to look for ways to implement a back end credentials checker that I could plug in. I soon ran across mentions of pamauth.py, and was pleasantly surprised to find it sitting in my Twisted-2.2.0/twisted/cred/pamauth.py But, I don't see a mention of how to use it. Most of what's on the web shows pamauth.py as living under twisted.conch, which I take to be an old code layout. This: $ find . -name '*.html' -print0 | xargs -0 grep -i pamauth at … [View More]

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[Twisted-Python] Database tests and Buildbots
by Jonathan Lange May 3, 2006

May 3, 2006

Hello, I'm trying to reproduce #1630 using the buildbots and I'm not having any luck. Apparently none of the database software is installed on any of the buildbots. All the tests are skipped with 'Cannot access db'. Can the buildbot maintainers please configure their slaves to have the appropriate software installed. Otherwise, we can't really continue supporting twisted.enterprise. cheers, jml

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[Twisted-Python] Twisted + Xapian WriteableDatabase leaves db_lock file on exit.
by jarrod roberson May 2, 2006

May 2, 2006

Twisted Sumo 2006-02-12 xapian and xapian bindings 0.9.2 svn 6532 I have written a Twisted service to write to a xapian database. I am using WriteableDatabase using DB_CREATE_OR_OPEN. I am also using twistd and the application plumbing to start the server. I have tried everything but no matter how I stop the server I can't get it to shutdown xapian cleanly. I have implemented stopService() on my service and do a .flush() and have even tried setting the db instance to None and tried using … [View More]

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[Twisted-Python] Re: The End, also: documentation
by Ed Suominen May 2, 2006

May 2, 2006

Mary Gardiner wrote: > On Wed, Apr 26, 2006, Ed Suominen wrote: > >>I'm thinking about suggesting (gasp!) myself as your replacement. > > ... > >>Comments welcome. Any positive ones will likely be viewed with suspicion >>and will raise pangs of regret at my making this rash posting. The >>negative ones will likely be viewed with relief, at least by the >>aforementioned logical, responsible part... > > > You'll notice I've reassigned … [View More]

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[Twisted-Python] What is the meaning of "threadable.whenThreaded is deprecated Use application-level logic instead"
by jmp May 1, 2006

May 1, 2006

Helo , Vhat is the meaning of "Use application-level logic instead" ? import twisted.internet.threads /usr/lib/python2.4/site-packages/twisted/python/context.py:74: DeprecationWarning: threadable.whenThreaded is deprecated. Use application-level logic instead. threadable.whenThreaded(initThreads)

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[Twisted-Python] zope.interface changes
by Jim Fulton May 1, 2006

May 1, 2006

I hope this is the right list to post to. Twisted-dev seems more aptly named, but it doesn't seem to get a lot of traffic. I've recently refactored the adapter-registration implementation in zope.interface. There were a number of reasons for this, including performance and making it possible, in the future, to implement a capability similar to Python's super builtin for calling overridden adaptera. The performance gains for the simple-adapter lookup used by Twisted was about 200%. For Zope, … [View More]

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[Twisted-Python] ProducerConsumerProxy problem
by Haris Andrianakis May 1, 2006

May 1, 2006

Hi, I'm trying to setup a ProducerConsumerProxy between a protocols.basic.FileSender producer and a TCP Protocol transport. I have the following code: fileObj = file('test.txt','r') proxy = protocols.pcp.ProducerConsumerProxy(self.transport) producer = protocols.basic.FileSender() dd = producer.beginFileTransfer(fileObj, proxy) dd.addCallback(self.uploadDone) dd.addErrback(self.uploadError) proxy.registerProducer(producer, False) The problem is that only 16KB of data are transfered and then … [View More]

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[Twisted-Python] OT: job offer
by Uwe C. Schroeder May 1, 2006

May 1, 2006

Hope nobody minds a job offer..... We have developed an application for the insurance market that is based on: wxPython for the GUI twisted pb as network layer certainly python :-) reportlab/OpenOffice/pyUno for printing zope/plone as alternative web interface. the database backend is postgresql. We're currently in the process of setting up a company to market this software. The software targets a niche market in the insurance business and has been in production for over 3 years with a … [View More]

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[Twisted-Python] Status of components, protocols, etc in Twisted
by Terry Jones May 1, 2006

May 1, 2006

I'm trying to better understand componentized architectures, protocols, adaptors etc., as done in Python. I've been reading around and have a few questions about the state of play. It would be good to understand where things are, and where they're heading. It seems there are (or were) 3 efforts to provide components, protocols, adaptors, etc.: Zope, Twisted, PyProtocols. It looks like Twisted is now using the zope module to do this. But I also ran across discussion (on this list, in Feb 2004, … [View More]I think), about possibly migrating zope's use of components to PyProtocols. Did that happen? I do like the sound of PyProtocols (and PEAK in general), but as someone else said, and as Philip wrote, the documentation isn't really focused on easing in a newbie. A couple of points on those docs, I think it would be good if someone set out how you would go about building something small (i.e., small concrete examples, not "big" more abstract ones). Yes, that someone could be me, agreed. Also, the docs say that it is intended that _all_ uses of type(), isinstance() etc., can/should be replaced. A few use cases would be helpful - how are we supposed to replace those things? I do have the impression that one should have a clean componentized design from the beginning and thereby never need or want to resort to introspection. If that's the case, it might be worth saying, as the docs leave one wondering if there's not perhaps some formulaic way to rewrite one's code to do the Right Thing. It's not that simple though, right? I'd also be happy to use the standard Twisted (i.e., zope) approach too. Do people have an opinion about which is better to use? Does it make much difference if you're just building a simple app with a handful of components you'd like to be able to swap in & out easily? I think the Twisted evolution of finger pages are really good, with a couple of minor weak points (e.g., highlighting new code from example to example). It's amazing what you can get done in a couple of hundred lines of Twisted code. BTW, there's a mention of __implements__ whereas implements() is used, which I guess is a hang over from an earlier version? This is on http://twistedmatrix.com/projects/core/documentation/howto/tutorial/compone… I guess someone will look for others. Grepping __implements__ gets a lot of hits in the distributed Twisted-2.2.0 docs (e.g., in doc/howto/*.html). Anyway, thanks for all the docs and code. I'm happy to put some work into making improvements where I can. Terry [View Less]

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[Twisted-Python] newpb status?
by Phil Christensen April 30, 2006

April 30, 2006

Just out of curiosity, I wondered where things stood with newpb. I'm eagerly awaiting its arrival; apologies if there was a list announcement I missed. I got an overview from Brian a few months back, and it got me all pumped ;-)... Is there any documentation available yet? Even just some example code would be nice; I'd like to get into newpb, even if it's in a state of flux. Unfortunately, I can't seem to find the time to lurk in IRC that much, so i kind of need some sort of … [View More]

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