Mailman 3 April 2003 - Twisted

[Twisted-Python] release momentum
by Kevin Turner April 8, 2003

April 8, 2003

Our release schedule, or lack thereof, is getting to me. I'm reluctant to deploy new releases of CVSToys because I'd be asking people to depend on an "alpha" version of Twisted. At least one person has come in to #twisted asking if there was going to be a release soon, or if he had to ask his users to get Twisted from CVS. Our last *alpha* release was was five weeks before PyCon started; there have been over five hundred commits since that time. I know we've all been busy, I know our … [View More]

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[Twisted-Python] What's twistd doing on Windows?
by Alan McIntyre April 8, 2003

April 8, 2003

Hi all, First of all I wanted to say thanks to all the Twisted guys that gave talks at PyCon 2003. I was going to use Zope for an upcoming project, but the demos you all gave made me think that Twisted might be a better fit for what we're doing. So I had to have a look once I got home. :) So far it's looking good; getting Twisted installed and a web instance running was a snap on both Windows and Debian. I had zero knowledge of Twisted prior to PyCon, but I was able to start from … [View More]

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[Twisted-Python] FTP Server
by Stefano Maniero April 8, 2003

April 8, 2003

I'm a new developer in twisted. I want test twisted writing an ftp server. Can anyone indicate an example or doc for developing ftp server? In twisted distribution I didn't find it. Thanks

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[Twisted-Python] coding standard: plurals for database table names
by Clark C. Evans April 8, 2003

April 8, 2003

I noticed in the Twisted Coding Standard that... "Database tables shall be named with plural nouns" I'd like to question this standard for several reasons: 1. There is not one single rule for forming plurals. In particular, some plurals have the same spelling as their singluar, 'deer'; furthermore some plurals have different forms, 'people' instead of 'persons'. Sometimes it is 's' or 'es'. These differences are especially hard for those who have English as a … [View More]

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[Twisted-Python] enterprise.row
by Justin Ryan April 7, 2003

April 7, 2003

I'm attempting to implement a simple database application (again) using twisted.enterprise.row. Perhaps my failure to do so successfully in the past should be a hint that I should give up, but the concept seems really cool, and I keep getting closer. I'm running into an issue that no doubt has something to do with my lack of understanding of t.e.row. I've been wanting to try it for a while, and decided to design a simple database with the goal of implementing a simple application using t.e.… [View More]

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[Twisted-Python] Twisted systems talking to one another
by Michael McLay April 7, 2003

April 7, 2003

Are there any examples of having two twisted servers exchanging information. The scenario I need to automate is one in which an Original Equipment Manufacturer (OEM) negotiating a contract with an Electronic Manufacturer Systems (EMS) company. The EMS would procure parts and build a product, such as a generic personal computer, a router, or some other type of electronics that are mass produced, but with very short product lifecycles. In this scenario the OEM would use PerspectiveBroker to … [View More]publish the content of a Request for Quote. The contents of the product data package would not be entirely revealed to potential bidders. The data would be gradually made available based on the state of negotiation in the contracting process. This pattern parallels the gradual disclouse of information about the virtual world in a MUDD game. The trading partners who may wish to bid on the RFQ would copy the initial RFQ announcement to the local server where they could run an analysis program over the basic contract requirements. If the initial requirements look promising they would submit a request for additional information, passing in their qualifications in exchange for the added information. A non-disclosure agreement would be part of this exchange. Then eventually goal would be to respond to the RFQ with a quote and receive a contract to build the OEMs product. Between the initial receipt of the RFQ and the sending of the quote the two servers would engage in a series of moderated transactions for negotiating the terms and conditions for the contract, as well as negotiating the schedule for delivery and the potential to substitute parts in the assembly process. Some of the transactions between the two companies could be totally automated, while others may require human intervention in the decision making process. According to the PerspectiveBroker documents I think this process could be made to work. One problem will be in setting up a universal authentication mechanism. This may just require using LDAP at all trading partnet sites and then federating the LDAP servers into a trading community. I haven't done something like that before, so that might be a bit of a challenge. There are standards for the informationthat need to be used during the transactions (RosettaNet and OAG define that XML representations of documents such as an RFQ; and IPC defines representations for bills of materials of parts to be used and full product data packages), so I won't need to make up that part of the system. The rules governing the negotiations are partially defined in the workflow definitions of the document standards. I think most of the effort will be in building Gtk user interfaces and building the business logic to support the interaction between the trading partners. Each stage in the negotiation process needs to be scripted and a user interface needs to be created. So back to my original question. Are their examples that do something similar, perhaps in a different context. Do TwistedMatrix MUDD worlds talk to each other, do characters and materials shift between worlds, or is each world operating in isolation? I can envision how the operation of the trading partner community could be created as a game, or manufacturing simulation environment. Once the bugs were worked out the simulator could be used to build and manage a real world virtual manufacturing community. Anyone care to estimate how long it might take to build the game version of the system using Twisted? I'm too new to the software to have a clue on what will be involved. [View Less]

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[Twisted-Python] libivykis: Useful for Twisted?
by Jeff Waugh April 7, 2003

April 7, 2003

"libivykis is a thin wrapper over various OS'es implementation of I/O readiness notification facilities (sich as poll(2), kqueue(2)) and is mainly intended for writing portable high-performance network servers." Useful for Twisted? (spiv was telling me about unreleased epoll goodness, perhaps this will help the Free World?) - Jeff -- GU4DEC: June 16th-18th in Dublin, Ireland http://www.guadec.org/ "Have you ever kissed a girl?" - Bryan Cantrill to Dave Miller

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[Twisted-Python] Copyright issues in the sandbox?
by Bob Ippolito April 7, 2003

April 7, 2003

Two quick legalityish questions: 1) Is it acceptable to commit sets.py (from Python 2.3) into the sandbox 2) I made a pure python (2.2.x+) implementation of itertools, but I stole 99% of the code from the "Equivalent to:" text in the documentation for the C module ( http://www.python.org/dev/doc/devel/lib/itertools-functions.html ), is that legal to put into the sandbox? -bob

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[Twisted-Python] [PATCH] row / reflector / sqlreflector - case insensitive tables/columns
by Justin Ryan April 7, 2003

April 7, 2003

Attached is a patch (cvs diff -u) to twisted.enterprise.row (and related code). Specifically, it affects the following files: twisted/enterprise/row.py twisted/enterprise/reflector.py twisted/enterprise/sqlreflector.py twisted/enterprise/util.py The purpose is to allow for case-sensitive table/column names. For me, there are two parts to this: (1) lots of comparisons in twisted use string.lower (RowObject.__getattr__(), etc..). There, theoretically, shouldn't be any column names that are … [View More]

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[Twisted-Python] Re: [Twisted-commits] cleanup after test
by Christopher Armstrong April 7, 2003

April 7, 2003

On Sun, Apr 06, 2003 at 02:30:44PM -0500, warner CVS wrote: > Modified files: > Twisted/twisted/test/test_journal.py 1.8 1.9 > > Log message: > cleanup after test Hmm, what's the point of this? I thought any files you create get stored in the _trial_temp directory (because trial os.chdir()s, or something), which is explicitly left around for post-mortem debugging. Or were these tests creating files explicitly in other locations? -- Twisted | Christopher Armstrong: … [View More]

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