Twisted-web February 2012

twisted-web@python.org

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Test
by Philippe Lafoucrière 05 Aug '21

05 Aug '21

Hi all just a test

3 2

Get access to Avatar from Resource object?
by Jacek Furmankiewicz 05 Mar '12

05 Mar '12

I am trying to understand how Twisted Web security works, based on a few links: http://jcalderone.livejournal.com/53074.html http://twistedmatrix.com/documents/current/web/howto/web-in-60/http-auth.ht… They all explain how to set up a web app with let's say HTTP auth. But there are no examples on how a Resource method (let;s say render_GET) could get access to the current Avatar object? And does the Avatar object need to implement some specific interface? What I want to do in CorePost is to allow fine grained privilege-based security *per method* (similar in style to Spring Security, for those who know it), e.g.: @route("/user",Http.GET) @secured("BROWSE_USER") def getUser(self,request,**kwargs): return ...some user info... @route("/user",Http.POST) @secured("UPDATE_USER") def updateUser(self,request,userId,**kwargs): ...create new user, etc... If the Avatar does not have the required privileges (e.g. "BROWSE_USER" or "UPDATE_USER" in the example above), I want to throw a 403 Access Denied automatically. Thanks for any pointers Jacek https://github.com/jacek99/corepost

7 18

Leaf Resources with child Leaf Resources
by Jacek Furmankiewicz 03 Mar '12

03 Mar '12

>From what I understand, once a Resource isLeaf = True, it cannot have child Resources of its own (no requests seem to get routed to them). This is not really a realistic scenario in a typical REST application where nested REST services are common, e.g. Customer REST service: *GET /services/customer* *POST /services/customer* *PUT /services/customer/<customerId>* *DELETE /services/customer/<customerId>* Customer Address REST service: *GET /services/customer/<customerId>/address* *POST /services/customer/<customerId>/address* *PUT /services/customer/<customerId>/address/<addressId>* *DELETE /services/customer/<customerId>/address/<addressId>* and so on and so forth.... The only way I can support this in CorePost is to separate the concept of a Twisted.Web Resource from a standalone REST service for a particular entity. So let's say I would have a root CorePost Resource hooked up to 'services' and it would have a child collection of REST service classes and manage routing the requests to the appropriate one. Each of the REST services for an entity underneath that core Resource would NOT be a twisted.web Resource but just a regular class. Does this sound correct? Or am I missing some way of using twisted.web Resource objects that would allow me to accomplish the same thing without moving away from Resource as the ancestor of all my REST service classes? Thanks Jacek

3 12

CorePost 0.0.11 is out
by Jacek Furmankiewicz 22 Feb '12

22 Feb '12

CorePost is a REST microframework built on top of the core twisted.web APIs for a more Flask/Sinatra style experience. Version 0.0.11 has a minor enhancement to add request/response filters. http://pypi.python.org/pypi/CorePost https://github.com/jacek99/corepost (scroll down to "Filters" for samples of the new functionality) Cheers Jacek

1 0

Assync method on render_POST(self,request)
by João Ricardo Mattos e Silva 17 Feb '12

17 Feb '12

My code looks like this: ... # class Site(Resource) def render_POST(self,request) otherclass.doAssync(request.args) print '1' return "done" #that returns the HTTP response, always the same. ... def doAssync(self,msg): d = defer.Deferred() reactor.callLater(0,self.doStuff,d,msg) d.addCallback(self.sucess) def doStuff(self,d,msg): # do some stuff time.sleep(2) #just for example d.callback('ok') def sucess(msg): print msg The output: 1 ok So far, so good, but, the HTTP response (return 'done'), only happens after the delay (time.sleep(2)). I can tell this, because the browser keeps 'loading' for 2 seconds. What am I doing wrong? Found some answer saying that wsgi twisted does not suport assync, and maybe Tornado could do this. ... is that true? Thanks anyway! Att, -- *João Ricardo Mattos e Silva* Graduando em Ciência da Computação na Universidade Federal de Santa Catarina *Cel: *+55 (48) 96190063 | *Skype:* jricardomsilva | * Msn: * joaoricardo(a)globalite.com.br

2 2

Twisted 12.0.0 released
by Thomas Hervé 11 Feb '12

11 Feb '12

On behalf of Twisted Matrix Laboratories, I am honored to announce the release of Twisted 12.0. 47 tickets are closed by this release, among them: * A fix to the GTK2 reactor preventing unnecessary wake-ups * Preliminary support of IPV6 on the server side * Several fixes to the new protocol-based TLS implementation * Improved core documentation's main page Twisted no longer supports Python 2.4, the latest supported version is 2.5. For more information, see the NEWS file here: http://twistedmatrix.com/Releases/Twisted/12.0/NEWS.txt Download it now from: http://pypi.python.org/packages/source/T/Twisted/Twisted-12.0.0.tar.bz2 or http://pypi.python.org/packages/2.5/T/Twisted/Twisted-12.0.0.win32-py2.5.msi or http://pypi.python.org/packages/2.6/T/Twisted/Twisted-12.0.0.win32-py2.6.msi or http://pypi.python.org/packages/2.7/T/Twisted/Twisted-12.0.0.win32-py2.7.msi Thanks to the supporters of the Twisted Software Foundation and to the many contributors for this release. -- Thomas

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Twisted-web February 2012