« Return to Thread: Examples with Stackless Python Re: InlineCallback Friendly ?
Examples with Stackless Python Re: InlineCallback Friendly ?
by Andrew Francis
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Hi Folks:
--- Andrew Francis <andrewfr_ice@...> wrote:
[J-P Calderone]
The only kind of dispatcher which is really hostile
towards inlineCallbacks is the kind which is
hostile towards Deferreds in general - ie, one which
requires a return value and does not support
Deferreds.
[A Francis]
Once again Jean-Paul, I find your explanation super
helpful and save me time going down the wrong path.
Starting off from where I left off in the "Adventures"
presentation, here are code snippets showing how to
handle other protocols with Stackless Python and
Twisted.
I am starting to experiment with resources as a part
of prototyping REST support in WS-BPEL. I am also
interested in developing front-ends with Flex.
This is an example with resources adapted from the Abe
Fettig example on page 48 of "Twisted Network
Programming Essentials." I am still getting my feet
wet with resources
class HomePage(resource.Resource):
def doWork(self):
message = """
<html>
<head>
</head>
<body>
Hello World
</body>
</html>
"""
self.request.write(message)
self.request.finish()
def render(self, request):
self.request = request
stackless.tasklet(self.doWork)()
return server.NOT_DONE_YET
and here is one with PyAMF .2
(I remember sketching this one out on a napkin at
PyCon 2008)
class EchoServer(TwistedGateway):
def __init__(self):
super(EchoServer, self).__init__()
self.request = None
return
def __echo__(self, request, deferred, y):
print "=>", request, deferred, y
deferred.callback(y)
def echo(self, request, y):
print "=>", request, y
deferred = defer.Deferred()
stackless.tasklet(self.__echo__)(request,
deferred, y)
return deferred
Cheers,
Andrew
____________________________________________________________________________________
Be a better friend, newshound, and
know-it-all with Yahoo! Mobile. Try it now. http://mobile.yahoo.com/;_ylt=Ahu06i62sR8HDtDypao8Wcj9tAcJ
from twisted.web import resource, server
from twisted.internet import reactor
from twisted.internet import defer
from twisted.internet import task
import stackless
class HomePage(resource.Resource):
def doWork(self):
message = """
<html>
<head>
</head>
<body>
Hello World from Andrew
</body>
</html>
"""
self.request.write(message)
self.request.finish()
def render(self, request):
self.request = request
stackless.tasklet(self.doWork)()
return server.NOT_DONE_YET
if __name__ == "__main__":
root = resource.Resource()
root.putChild('', HomePage())
reactor.listenTCP(8000, server.Site(root))
print "programme starting"
task.LoopingCall(stackless.schedule).start(.01)
stackless.tasklet(reactor.run)()
stackless.run()
#!/usr/bin/env python
"""
"""
import stackless
from twisted.web import resource, http, server, error
from twisted.internet import reactor
from twisted.python import log
from pyamf import remoting
from pyamf.remoting.gateway.twisted import TwistedGateway
from twisted.internet import defer
from twisted.internet import task
class EchoServer(TwistedGateway):
def __init__(self):
super(EchoServer, self).__init__()
self.request = None
return
def __echo__(self, request, deferred, y):
print "=>", request, deferred, y
deferred.callback(y)
def echo(self, request, y):
print "=>", request, y
deferred = defer.Deferred()
stackless.tasklet(self.__echo__)(request, deferred, y)
return deferred
if __name__== "__main__":
gw = EchoServer()
gw.addService(gw.echo, "echo", "echo")
root = resource.Resource()
root.putChild('gwplayer', gw)
reactor.listenTCP(8080, server.Site(root))
print "reactor running"
task.LoopingCall(stackless.schedule).start(.01)
stackless.tasklet(reactor.run)()
stackless.run()
--- Andrew Francis <andrewfr_ice@...> wrote:
[J-P Calderone]
The only kind of dispatcher which is really hostile
towards inlineCallbacks is the kind which is
hostile towards Deferreds in general - ie, one which
requires a return value and does not support
Deferreds.
[A Francis]
Once again Jean-Paul, I find your explanation super
helpful and save me time going down the wrong path.
Starting off from where I left off in the "Adventures"
presentation, here are code snippets showing how to
handle other protocols with Stackless Python and
Twisted.
I am starting to experiment with resources as a part
of prototyping REST support in WS-BPEL. I am also
interested in developing front-ends with Flex.
This is an example with resources adapted from the Abe
Fettig example on page 48 of "Twisted Network
Programming Essentials." I am still getting my feet
wet with resources
class HomePage(resource.Resource):
def doWork(self):
message = """
<html>
<head>
</head>
<body>
Hello World
</body>
</html>
"""
self.request.write(message)
self.request.finish()
def render(self, request):
self.request = request
stackless.tasklet(self.doWork)()
return server.NOT_DONE_YET
and here is one with PyAMF .2
(I remember sketching this one out on a napkin at
PyCon 2008)
class EchoServer(TwistedGateway):
def __init__(self):
super(EchoServer, self).__init__()
self.request = None
return
def __echo__(self, request, deferred, y):
print "=>", request, deferred, y
deferred.callback(y)
def echo(self, request, y):
print "=>", request, y
deferred = defer.Deferred()
stackless.tasklet(self.__echo__)(request,
deferred, y)
return deferred
Cheers,
Andrew
____________________________________________________________________________________
Be a better friend, newshound, and
know-it-all with Yahoo! Mobile. Try it now. http://mobile.yahoo.com/;_ylt=Ahu06i62sR8HDtDypao8Wcj9tAcJ
from twisted.web import resource, server
from twisted.internet import reactor
from twisted.internet import defer
from twisted.internet import task
import stackless
class HomePage(resource.Resource):
def doWork(self):
message = """
<html>
<head>
</head>
<body>
Hello World from Andrew
</body>
</html>
"""
self.request.write(message)
self.request.finish()
def render(self, request):
self.request = request
stackless.tasklet(self.doWork)()
return server.NOT_DONE_YET
if __name__ == "__main__":
root = resource.Resource()
root.putChild('', HomePage())
reactor.listenTCP(8000, server.Site(root))
print "programme starting"
task.LoopingCall(stackless.schedule).start(.01)
stackless.tasklet(reactor.run)()
stackless.run()
#!/usr/bin/env python
"""
"""
import stackless
from twisted.web import resource, http, server, error
from twisted.internet import reactor
from twisted.python import log
from pyamf import remoting
from pyamf.remoting.gateway.twisted import TwistedGateway
from twisted.internet import defer
from twisted.internet import task
class EchoServer(TwistedGateway):
def __init__(self):
super(EchoServer, self).__init__()
self.request = None
return
def __echo__(self, request, deferred, y):
print "=>", request, deferred, y
deferred.callback(y)
def echo(self, request, y):
print "=>", request, y
deferred = defer.Deferred()
stackless.tasklet(self.__echo__)(request, deferred, y)
return deferred
if __name__== "__main__":
gw = EchoServer()
gw.addService(gw.echo, "echo", "echo")
root = resource.Resource()
root.putChild('gwplayer', gw)
reactor.listenTCP(8080, server.Site(root))
print "reactor running"
task.LoopingCall(stackless.schedule).start(.01)
stackless.tasklet(reactor.run)()
stackless.run()
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