Mailman 3 November 2004 - Twisted

[Twisted-Python] Problem with using mktap
by Roland Hedberg Nov. 16, 2004

Nov. 16, 2004

Hi! I'm implementing a server, who on one sida should have a connection to a unix domain socket and on the other hand listen on a UDP socket. On the unix domain socket this server works as a client. First without mktap. This works: if __name__ == "__main__": port = 6666 sserv = "/tmp/uds" name = "router" f = spocpFactory( ) router = RudsProt( f, name, 1 ) try: reactor.connectUNIX( sserv, f ) reactor.listenUDP( port, router ) reactor.run() except: print "Server missing" What should this look like using mktap ? Tried a simple rewrite: def makeService( config ): port = int(config["port"]) routeServer = config["spocp"] nodename = config["name"] application = service.Application('UDSRouter') f = spocpFactory() reactor.connectUNIX( routeServer, f ) router = RudsProt( f,nodename) udpServer = internet.UDPServer( port, router ) udpServer.setServiceParent(application) return udpServer Didn't work. Well, actually mktap doesn't complain and I get a tap file. But when I run it using twistd spocpFactory doesn't seem to be initialized, ever. -- Roland

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[Twisted-Python] twistd and serial port access
by Eugene Coetzee Nov. 16, 2004

Nov. 16, 2004

Hi everyone, I'm stumped by the following problem with using pyserial from within twistd. (assuming I'm invoking twistd from the cmd line as uid=1000 gid=100 and I'm using pyserial to connect to /dev/ttyS01 which have permissions 666, owner 'root', grp 'uucp' ) In myserialapp.py I have created an application object (I want the daemon to run as uid 1000): application=service.Application('serial',uid=1000,gid=100) When I run : twistd -ny myserialapp.py >/dev/null & - no problem whatsover. BUT when I run: twistd -y myserialapp.py - pyserial squeels about the serialport "not being a valid file descriptor." I'm convinced that it has someting to do with permissions when twistd enters daemon mode - but what and how do I fix that? regards, Eugene Coetzee Web -> www.reedflute.com ===============================================

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[Twisted-Python] Re: Thank you!
by Stephen Nov. 16, 2004

Nov. 16, 2004

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[Twisted-Python] Blocking?
by Chad Rosenberg Nov. 15, 2004

Nov. 15, 2004

I've run into a problem that requires some form of blocking. I've got a method that's compiled from a cheetah template and that gets called as the result of a reactor callback. The cheetah method needs to be able to make a PB call to fetch some data and block until the results arrive. Something like this: ----------- def reactorCallback(self): self.callCheetahCompiledMethod() ... def cheetahCompiledMethod(self): print self.utilClass.lookup(foo) ... class UtilClass: def lookup(self, whatToLookup): pbDeferred = self.pbCall(whatToLookup) # Some way to block until results are gotten return results ----------- "cheetahCompiledMethod", itself, cannot use callbacks. The call to "lookup" can't be done before "cheetahCompiledMethod" is called since it is unknown at that time what "cheetahCompiledMethod" will require. I was looking over Christopher Armstrong's gthreadless.py (http://radix.twistedmatrix.com/archives/000099.html) and it looks promising, but I am a little concerned about the stability of greenlets. I also noticed twisted.trial.util.wait. What is the best way to handle situations like this when they come up? Thanks, Chad

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[Twisted-Python] Re: Hello
by Stephen Nov. 15, 2004

Nov. 15, 2004

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[Twisted-Python] The CompStrm Wiki
by William la Forge Jr Nov. 15, 2004

Nov. 15, 2004

To demonstrate the advantages of a database that supports navigation in time, I've developed the CompStrm Wiki. Anyone, once they login, can modify the contents of a Wiki. It is a bit like the Wild West sometimes, as pages can get renamed or deleted. Links can easily be broken and valuable content lost. That is because only the latest content can be accessed. The CompStrm Wiki can help. All content, once entered, remains accessible. Users can view all changes made to a page, and can even go back in time and navigate links to pages that no longer exist. (This applies to the topics list and page citations as well.) You can even create links on a Wiki page which specify the time at which a page is to be viewed. By adding the dimension of time, site management is made a lot easier. And for more dynamic subjects (e.g. documentation for a new project), users can now get a historical perspective. http://compstrm.sourceforge.net/wiki/index.html CompStrm builds on Twisted, using BSDDB as a transactional store. Bill la Forge

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Re: [Twisted-Python] imap4client.py example problem
by Robert Penz Nov. 15, 2004

Nov. 15, 2004

On Wednesday 10 November 2004 14:10, Robert Penz wrote: after the talk in the channel I've following to add to the case. 1. it works if I just look for the mailbox "INBOX". thx krp for the tip. 2. the output of namespace() is [[['INBOX.', '.']], [], [['', '.']]] hope this info helps.

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[Twisted-Python] gtk2reactor/conch failures
by James Y Knight Nov. 14, 2004

Nov. 14, 2004

Someone wanna look into this? There's a bunch of failures that look like this in test_conch/test_sftp on gtk2. These seem to show up consistently, at least. Perhaps the testcases are incorrectly calling crash multiple times? Is that supposed to be allowed by the reactor API? It doesn't specify, and the default implementation allows multiple calls of crash but not stop. ======================================================================== ======= [ERROR]: testOurServerCmdLineClient (twisted.conch.test.test_conch.SSHTransportTestCase) File "/home/buildbot/BuildBot/slave/reactors/Twisted/twisted/python/log.py", line 54, in callWithLogger return callWithContext({"system": lp}, func, *args, **kw) File "/home/buildbot/BuildBot/slave/reactors/Twisted/twisted/python/log.py", line 41, in callWithContext return context.call({ILogContext: newCtx}, func, *args, **kw) File "/home/buildbot/BuildBot/slave/reactors/Twisted/twisted/python/ context.py", line 52, in callWithContext return self.currentContext().callWithContext(ctx, func, *args, **kw) File "/home/buildbot/BuildBot/slave/reactors/Twisted/twisted/python/ context.py", line 31, in callWithContext return func(*args,**kw) File "/home/buildbot/BuildBot/slave/reactors/Twisted/twisted/internet/ gtk2reactor.py", line 200, in _doReadOrWrite self._disconnectSelectable(source, why, didRead == source.doRead) File "/home/buildbot/BuildBot/slave/reactors/Twisted/twisted/internet/ default.py", line 141, in _disconnectSelectable selectable.readConnectionLost(f) File "/home/buildbot/BuildBot/slave/reactors/Twisted/twisted/internet/ tcp.py", line 314, in readConnectionLost self.connectionLost(reason) File "/home/buildbot/BuildBot/slave/reactors/Twisted/twisted/internet/ tcp.py", line 326, in connectionLost protocol.connectionLost(reason) File "/home/buildbot/BuildBot/slave/reactors/Twisted/twisted/conch/test/ test_conch.py", line 339, in connectionLost reactor.crash() File "/home/buildbot/BuildBot/slave/reactors/Twisted/twisted/internet/ gtk2reactor.py", line 167, in crash self.__crash() exceptions.RuntimeError: called outside of a mainloop ======================================================================== ======= http://www.twistedmatrix.com/buildbot/reactors/builds/224/gtk2/2 James

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[Twisted-Python] Weekly Bug Summary
by James Y Knight Nov. 14, 2004

Nov. 14, 2004

Bug summary ______________________ Since 2004-11-06 05:42:38.600000: Bugs opened: 11 Bugs closed: 11 Total open bugs: 327 (+0) New / Reopened Bugs ______________________ [TRIAL] Errors flushed in tearDown still cause test methods to fail (yesterday) http://www.twistedmatrix.com/bugs/issue785 opened by exarkun [TRIAL] unittest.wait() calls runUntilCurrent recursively (6 days ago) http://www.twistedmatrix.com/bugs/issue781 opened by exarkun certificate verification exception not intercepted by twisted (7 days ago) http://www.twistedmatrix.com/bugs/issue778 opened by andrea [TRIAL] Trial --tbformat=plain still shows emacs-style tracebacks in certain cases (6 days ago) CLOSED http://www.twistedmatrix.com/bugs/issue783 opened by radix [TRIAL] LoggedErrors unusable with .todo (1 week ago) CLOSED http://www.twistedmatrix.com/bugs/issue776 opened by spiv [TRIAL] Lame ass error reporting formatting from trial (7 days ago) http://www.twistedmatrix.com/bugs/issue779 opened by exarkun [ENTERPRISE] adbapi tests fail under gtk2 reactor (5 days ago) http://www.twistedmatrix.com/bugs/issue784 opened by warner [CORE] ReactorTime has serious performance issues (2 months ago) CLOSED http://www.twistedmatrix.com/bugs/issue707 opened by stefan [TRIAL] "trial -u dir_with_no_tests" breaks (7 days ago) CLOSED http://www.twistedmatrix.com/bugs/issue777 opened by spiv [TWISTD] twistw should be renamed _twistw to avoid user confusion (6 days ago) http://www.twistedmatrix.com/bugs/issue782 opened by spiv journaling in twisted.persisted.dirdbm (7 days ago) http://www.twistedmatrix.com/bugs/issue780 opened by andrea Bugs Closed ______________________ [TRIAL] trial/pdb integration is broken wrt readline (1 week ago) http://www.twistedmatrix.com/bugs/issue775 opened by exarkun [TRIAL] Trial --tbformat=plain still shows emacs-style tracebacks in certain cases (6 days ago) http://www.twistedmatrix.com/bugs/issue783 opened by radix [TRIAL] LoggedErrors unusable with .todo (1 week ago) http://www.twistedmatrix.com/bugs/issue776 opened by spiv [CORE] ReactorTime has serious performance issues (2 months ago) http://www.twistedmatrix.com/bugs/issue707 opened by stefan retrial util.deferredError blows up on failure (2 months ago) http://www.twistedmatrix.com/bugs/issue705 opened by warner [TRIAL] "trial -u dir_with_no_tests" breaks (7 days ago) http://www.twistedmatrix.com/bugs/issue777 opened by spiv Added Timeout checking to IMAP4Client (2 weeks ago) http://www.twistedmatrix.com/bugs/issue765 opened by bkirsch [TRIAL] trial commandline tool should also run Python's unittest.TestCase (8 months ago) http://www.twistedmatrix.com/bugs/issue553 opened by itamarst [TRIAL] Print tracebacks incrementally from trial (5 months ago) http://www.twistedmatrix.com/bugs/issue622 opened by glyph [TRIAL] trial needs to have assertSubstring (9 months ago) http://www.twistedmatrix.com/bugs/issue501 opened by jknight [TRIAL] setUp and tearDown should be allowed to raise FailTest (2 weeks ago) http://www.twistedmatrix.com/bugs/issue766 opened by jknight

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[Twisted-Python] Fwd: Porting Twisted to another language...
by Christopher Armstrong Nov. 14, 2004

Nov. 14, 2004

(please Cc: jeff(a)dark-light.com in replies, as I don't think he's subscribed to the list) ---------- Forwarded message ---------- From: jeff(a)dark-light.com <jeff(a)dark-light.com> Date: Sat, 13 Nov 2004 10:52:32 -0800 Subject: Porting Twisted to another language... To: twisted-python-owner(a)twistedmatrix.com I don't know if I'm sending this to the right place, but I hope that if I didn't, you may be able to forward it along to it's proper destination. I am a programmer that uses the Ruby programming language as my preferred base. Unfortunately, there really isn't any kind of library of objects similar to Twisted available for Ruby. Due to the similarities between Ruby & Python, I don't believe that porting the entire collective over to Ruby would be an extreme challenge. Since Twisted is yours, I wouldn't think of embarking on such a project without your approval. So, that's why I'm writing this. Anyways, any communication is welcome. I only get to check this email a few times a day so please don't be cross if I take a bit to get back to any response. My job doesn't allow me to deal with my external mail accounts & such during my time there. So, if you have any comments or questions, or if I can provide any additional information and/or assistance, please let me know. I'm always glad to be of assistance. Thank you in advance for your attention. I look forward to your response. -- Twisted | Christopher Armstrong: International Man of Twistery Radix | Release Manager, Twisted Project ---------+ http://radix.twistedmatrix.com

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