Mailman 3 November 2006 - Twisted

[Twisted-Python] Problem with ftp upload
by Stéphane Brault 03 Nov '06

03 Nov '06

Hi, I'm using twisted ftp api to upload files, I also added the ticket 1914 patch. Here is my code : class myFTP(object): def __init__(self, login, password): self.creator = ClientCreator(reactor, FTPClient, login, password, passive=0) def connectionFailed(self, f): print 'connection error' def success(self, response): print 'Success' def fail(self, error): print 'Erreur:' + error def doOperation(self, operation, data): d = self.creator.connectTCP(FTP_ADDRESS, 21) if operation == 'addItems': return d.addCallback(self.inventoryUpload, data).addErrback(self.connectionFailed) elif .... def _upload(self, consumer, file): return FileSender().beginFileTransfer(file, consumer).addCallback(lambda _: consumer.finish()).addCallback(lambda _: file.close()) def inventoryUpload(self, ftpClient, file): name = '/stock/entrees/export_items_' + encodeDate(datetime.datetime.now()) + '.txt' return ftpClient.storeFile(name)[0].addCallback(self._upload, file).addCallbacks(self.success, self.fail) .... The operation is called this way: call = myFTP(login, password) call.doOperation('addItems', StringIO(data)) The file is created but empty, it seems that _upload is not called, I can't understand why, any hint ? I was also wondering how to disconnect once my work is done, I don't think keeping open connections is a good thing. Thanks, Stéphane ___________________________________________________________________________ Découvrez une nouvelle façon d'obtenir des réponses à toutes vos questions ! Profitez des connaissances, des opinions et des expériences des internautes sur Yahoo! Questions/Réponses http://fr.answers.yahoo.com

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[Twisted-Python] manhole questions
by Alec Matusis 03 Nov '06

03 Nov '06

Hello I am using manhole with Twisted 2.2 like so: manhole_factory = twisted.manhole.telnet.ShellFactory() manhole_factory.username = config.manhole_user manhole_factory.password = config.manhole_pwd manhole_factory.service = t_service manhole_serv=twisted.application.internet.TCPServer(common.config.t_manhole_ port, manhole_factory).setServiceParent(application) I have two problems: 1) Backspace and Arrow keys do not work with telnet. How can I fix that? 2) When I make a mistake and cause an error in the interpreter, the Traceback gets logged into the application's main log file, thus polluting it. How can I prevent these errors in manhole's telnet from being logged into the application's main log? Additional question: 3) When I maintain a telnet session into manhole in a production server, how does it affect its performance/stability ? Thanks Alec.

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[Twisted-Python] Strange error when using strptime within a nevow application
by Franz Zieher 01 Nov '06

01 Nov '06

I've experiencing a very strange error when using strptime for populating a 'formal' form. If I run the code segment with strptime in ipython it can succesfully transform '12-10-06' with '%d-%m-%Y' into a time tuple! With nevow I get the following exception: ---------------------------------------------------------- 2006/11/01 01:18 W. Europe Standard Time [-] Log opened. 2006/11/01 01:18 W. Europe Standard Time [-] twistd 2.4.0(D:\Python24\python.exe 2.4.3) starting up 2006/11/01 01:18 W. Europe Standard Time [-] reactor class: <class ' twisted.internet.selectreactor.SelectReactor'> 2006/11/01 01:18 W. Europe Standard Time [-] nevow.appserver.NevowSitestarting on 8000 2006/11/01 01:18 W. Europe Standard Time [-] Starting factory < nevow.appserver.NevowSite instance at 0x02797A30> 2006/11/01 01:18 W. Europe Standard Time [HTTPChannel,0,127.0.0.1] 127.0.0.1- - [01/Nov/2006:00:18:24 +0000] "GET / HT P/1.1" 200 7872 "-" "Mozilla/5.0 (Windows; U; Windows NT 5.1; de; rv:1.8.1) Gecko/20061010 Firefox/2.0" 2006/11/01 01:18 W. Europe Standard Time [HTTPChannel,0,127.0.0.1] (NAME,DIR): ('newChild', None) 2006/11/01 01:18 W. Europe Standard Time [HTTPChannel,0,127.0.0.1] IRemainingSegments: ('newChild',) 2006/11/01 01:18 W. Europe Standard Time [HTTPChannel,0,127.0.0.1] Unhandled error in Deferred: 2006/11/01 01:18 W. Europe Standard Time [HTTPChannel,0,127.0.0.1] Traceback (most recent call last): File "d:\python24\lib\site-packages\twisted\internet\defer.py", line 307, in _runCallbacks self.result = callback(self.result, *args, **kw) File "build\bdist.win32\egg\formal\form.py", line 617, in locateForm File "d:\python24\lib\site-packages\twisted\internet\defer.py", line 191, in addCallback callbackKeywords=kw) File "d:\python24\lib\site-packages\twisted\internet\defer.py", line 182, in addCallbacks self._runCallbacks() --- <exception caught here> --- File "d:\python24\lib\site-packages\twisted\internet\defer.py", line 307, in _runCallbacks self.result = callback(self.result, *args, **kw) File "build\bdist.win32\egg\formal\form.py", line 617, in <lambda> File "build\bdist.win32\egg\formal\form.py", line 567, in formFactory File "e:\data\iCAE\python\icaeForms.py", line 92, in form_instance eval('self.%s(form)' % tag) File "<string>", line 0, in ? File "e:\data\iCAE\python\icaeForms.py", line 128, in project print strptime('10-12-06','%d-%m-%Y')[0] File "D:\Python24\lib\_strptime.py", line 269, in ? _TimeRE_cache = TimeRE() File "D:\Python24\lib\_strptime.py", line 188, in __init__ self.locale_time = LocaleTime() File "D:\Python24\lib\_strptime.py", line 74, in __init__ self.__calc_weekday() File "D:\Python24\lib\_strptime.py", line 94, in __calc_weekday a_weekday = [calendar.day_abbr[i].lower() for i in range(7)] exceptions.AttributeError: 'module' object has no attribute 'day_abbr' Any idea what that could be? Thanks Franz

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[Twisted-Python] Wrapping my mind around Interfaces, adapters, factories, protocols
by Ron Arts 01 Nov '06

01 Nov '06

Hi, I am trying to accomplish the following: - have a client connecting to a remote service and collecting information from it - have a service that can be queried for the collected info But I am getting totally confused with all the interface classes, adapters, factories, protocols I should write according to the finger tutorial. I skimmed the mailinglist, but to no avail. My app is laid out almost like the finger tutorial (I left out the web, and PB parts for now), the biggest difference being that the client data should be available to the service that is being queried. So I thought that instead of first create the finger service in the makeService() method, I would first create a TCP client, and pass that to a service to be created later. something like: def makeService(config): s = service.MultiService() m = MyClient() m.username = 'username' m.password = 'password' theserver = '192.168.1.2' b = internet.TCPClient(theserver, 6666, IMyClientFactory(m)) b.setServiceParent(s) return s But for this to work I have to create interfacethis, protocol that, and use components.registerAdapter(), to do something I totally don't understand what it does and why it needs to be done, I have read the finger example many times, but I can't seem to wrap my mind around these concepts, in the little time I have available. Can anybody whip me up a supershort example in pseudo code of what I need to do to make the above makeService work? And explain it a bit? Many thanks, Ron

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