Mailman 3 January 2014 - Twisted

[Twisted-Python] Buildbot downtime
by Tom Prince 04 Mar '22

04 Mar '22

I am plannig to upgrade twisted's buildbot in the near future. In preperation for that, I am going to take down the production buildbot on Tuesday, June 26, around 1600 UTC[1]. During that time, the result of any builds done will be lost. Thus, I'd ask that people avoid committing to trunk during that time. I will send a reminder before I take down the buildbot both here, and on #twisted and #twisted-dev. Tom [1] http://timeanddate.com/worldclock/meetingtime.html?iso=20120626&p1=80&p2=22…

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[Twisted-Python] Twisted Python 0.7.0 Prerelease Testing
by Glyph Lefkowitz 06 Aug '21

06 Aug '21

hi there, folks: I'd really like to release 0.7.0 but I would like it to be at least a little bit tested before I do so. Could those of you with CVS trees check everything out and see if it performs as advertised? Deeper bugs than that will have to wait for the next release, but I'd at least like to know if it works for someone other than me. Thanks. ______ __ __ _____ _ _ | ____ | \_/ |_____] |_____| |_____| |_____ | | | | @ t w i s t e d m a t r i x . c o m http://www.twistedmatrix.com/~glyph/

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01 May '19

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[Twisted-Python] Better usage of Twisted on multi core processor
by Sumanth Puram 13 Mar '15

13 Mar '15

Hi all, I have a twisted TCP server to listens to client, processes requests, do mysql database operations if needed (using adbapi Connection pool) and return the result. Before deploying this in production, I want to know right way to configure the server. Since twisted is single threaded, how can I leverage multiple cores of my production machine (which has 6 cores and 16 GB RAM) ? One approach that I thought of was to start multiple instances of twisted server on different ports. This would help in using the other cores as well. What do you guys suggest ? Thanks -Sumanth

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[Twisted-Python] [ANN] txZMQ released
by Andrey Smirnov 21 Jul '14

21 Jul '14

Hi! I would like to announce txZMQ, ZeroMQ bindings for Twisted. txZMQ is based on pyzmq and requires recent ØMQ version (>=2.1). txZMQ uses ØMQ APIs to get file descriptor that is used to signal pending actions from ØMQ library IO thread running in separate thread. txZMQ should be usable with any Twisted reactor. ØMQ is: * The socket library that acts as a concurrency framework. * Carries messages across inproc, IPC, TCP, and multicast. * Connect N-to-N via fanout, pubsub, pipeline, request-reply. * Fast enough for clustered products and supercomputing. * Asynch I/O for scalable multicore message-passing apps. Bridging ØMQ and Twisted makes a nice match: fast simple messaging between Twisted instances solving complex problems :) Links: * PyPi: http://pypi.python.org/pypi/txZMQ/ * Source code: https://github.com/smira/pyzmq * pyzmq: http://pypi.python.org/pypi/pyzmq * ØMQ: http://www.zeromq.org/ -- Andrey Smirnov, Qik Web Team Lead

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[Twisted-Python] Declaring some new supported builders (platforms)
by exarkun＠twistedmatrix.com 31 Jan '14

31 Jan '14

Hey guys, Please comment on <https://github.com/twisted-infra/twisted-buildbot- configuration/pull/4>. It changes the following builders/configurations from unsupported to supported: debian6-x86_64-py2.6 debian6-x86_64-py2.6-glib ubuntu-12.04-x86_64-py2.7 ubuntu-12.04-x86_64-py2.7-glib fedora19-x86_64-py2.7 Jean-Paul

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[Twisted-Python] Problem with txampq_helper ampqFactory: closing connections
by Andrew Francis 30 Jan '14

30 Jan '14

Hi Folks: I need to maintain a programme that uses txampq_helper library ampqFactory. The current program does not close the connection to the underlying rabbitmq (the code is a mess). Can I simple call theampqFactory.protocol.transport.loseConnection()? Do I need to unregisterProducer() first (in ampqFactory, i see stuff like resumeProducing() so I assume it is a producer) Cheers, Andrew

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[Twisted-Python] Twisted VxWorks PBConnectionLost
by Toph Bei Fong 30 Jan '14

30 Jan '14

Hello, I started few days ago to make Buildbot under VxWorks run. I ported Python and made a few changes in Buildbot and Twisted to make everything run. I'm using Twisted 9.0.0 and Python 2.7.6 Twisted version is a bit old because its not complex as the 13.0.0 and it made the work under QNX for example. In Buildbot there are few possibilities to make a Step: * FileUpload * FileDownload * ShellCommand * MasterShellCommand MasterShellCommand doesnt make any difference here since its executed on the Master. FileUpload and FileDownload (filetransfer between Master and Slave) works fine. My Problem is the ShellCommand. It executes a command on the Slave. Im using the posix part on the Slave BUT fork() and exec() are not supported in VxWorks. So i changed for _fork methode in twisted/internet/process.py to avoid the fork()-part [self.pid = fork()]. I didnt change the exec part in Twisted. I did in the Python .. (in os.py i changed the exec methode to call another methode .. so i didnt made a huge change there). Now when i want to execute a ShellCommand, my buildbot/twisted/python crashes and i have an exception: remoteFailed: [Failure instance: Traceback (failure with no frames): <class 'twisted.spread.pb.PBConnectionLost'>: [Failure instance: Traceback (failure with no frames): <class 'twisted.internet.error.ConnectionDone'>: Connection was closed cleanly.] twisted.spread.pb.PBConnectionLost: [Failure instance: Traceback (failure with no frames): <class 'twisted.internet.error.ConnectionDone'>: Connection was closed cleanly. ] twisted.spread.pb.PBConnectionLost: [Failure instance: Traceback (failure with no frames): <class 'twisted.internet.error.ConnectionDone'>: Connection was closed cleanly. ] There are the two things i have. My question after writing 40 lines here: What could be the problem? Why does it just crash without any "real" exception or error. Could someone point me to the right direction? Thanks. Best regards.

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[Twisted-Python] Protocol for socket.io
by Andrew Francis 30 Jan '14

30 Jan '14

Hi: I searched the archive but couldn't find an answer so here goes: I am also new to all this I need to write a server that receives socket.io requests. I see Twisted has support for WebSocket. I also see that the Tornado2 socket.io is used alongside Twisted (I didn't know that this was possible). I read that socket.io uses WebSocket whenever possible. I have just started to look at the js implementation of socket.io and the specification. I am trying to gauge how hard is it to write a socket.io protocol/handler. Am I barking up the wrong tree? Or do I really need to learn Tornado? Cheers, Andrew

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[Twisted-Python] Python Events Calendar (Now with Twitter feed)
by Laurens Van Houtven 29 Jan '14

29 Jan '14

Hi Twisters, Marc-Andre Lemburg from the PSF has been taking care of a Python events calendar for a while. It now has a twitter feed making it easier to find new events. If you're doing any Python-related events, such as of course Twisted sprints, or maybe Python user group meetups, please don't hesitate to contact the PSF to get your event added. M.-A.'s e-mail as been forwarded below. hth lvh ---------- Forwarded message ---------- From: M.-A. Lemburg <mal(a)python.org> Date: Wed, Jan 29, 2014 at 11:20 AM Subject: [psf-members-ann] ANN: Python Events Calendar - Now with Twitter feed To: PSF Members Announcements <psf-members-announce(a)python.org> [Please help spread the word by forwarding to other relevant mailing lists, user groups, etc. world-wide; thanks :-)] ________________________________________________________________________ ANNOUNCING Python Events Calendars - Now with Twitter feed maintained by the Python Software Foundation (PSF) and a group of volunteers ________________________________________________________________________ INTRODUCTION As some of you may know, the PSF has put together a team of volunteers who are maintaining a central Python events calendar. We currently have two calendars in place: * Python Events Calendar - meant for conferences and larger gatherings focusing on Python or a related technology (in whole or in part) * Python User Group Calendar - meant for user group events and other smaller local events The calendars are displayed on http://pycon.org/ and in a smaller version in the sidebar of the http://python.org/ website. You can subscribe to the calendars using iCal and RSS feeds and also embed the calendar widgets on your sites. Please see our wiki page for details: https://wiki.python.org/moin/PythonEventsCalendar The calendars are open to the world-wide Python community, so you can have local user group events, as well as regional and international conference events added to the calendars. ________________________________________________________________________ NEWS We have now created a Twitter feed for the calendars, which you can follow to get updates on all newly added events: https://twitter.com/pythonevents The tweets come with links to the event listings, which you can add to your own Google calendars with a single click. ________________________________________________________________________ ADDING EVENTS If you want to have entries added to those calendars, please write to events(a)python.org and include the following information: * Name of the event * Type of the event (conference, bar camp, user group, etc) * Focus on Python and approximate size * URL * Location and country * Date and time (if relevant) For recurring events, please also include a description of the recurrence in a way that's compatible and supported by Google calendars. ________________________________________________________________________ MORE INFORMATION More information on the calendars, the URLs, feed links, IDs, embedding, etc. is available on the wiki: https://wiki.python.org/moin/PythonEventsCalendar Enjoy, -- Marc-Andre Lemburg Director Python Software Foundation http://www.python.org/psf/ _______________________________________________ psf-members-announce mailing list psf-members-announce(a)python.org https://mail.python.org/mailman/listinfo/psf-members-announce

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Twisted January 2014