Re: [Twisted-Python] an easy twisted application question

Nov. 12, 2003

      so i followed jp's advice, and my makeService method now looks like this:

###############code#################
def makeService(config):
    registry = Registry()
    reg_service = RegistryService(registry)
    portal = Portal(auth.InnerSpaceRealm(reg_service))
    checker = auth.RegistryChecker(registry)
    portal.registerChecker(checker)
    pb_service = internet.TCPServer(int(config['port']),
                                    pb.PBServerFactory(portal))
    reg_service.setServiceParent(pb_service)
    return pb_service
###############code#################

when i try to build my tap file now, i get

###############traceback#################
Traceback (most recent call last):
  File "/Users/phil/Python/Twisted/bin/mktap", line 30, in ?
    run()
  File "/Users/phil/Python/Twisted/twisted/scripts/mktap.py", line 160, in
run
    options.subOptions)
  File "/Users/phil/Python/Twisted/twisted/scripts/mktap.py", line 58, in
makeService
    ser = mod.makeService(options)
  File "./inner/space/bigbang.py", line 24, in makeService
    reg_service.setServiceParent(pb_service)
  File "/Users/phil/Python/Twisted/twisted/application/service.py", line
116, in setServiceParent
    self.parent.addService(self)
AttributeError: TCPServer instance has no attribute 'addService'
###############traceback#################

i've tried this both ways, with pb_service as the parent, and with
reg_service as the parent, with the same result.

btw, i am working out of a freshly checked-out cvs directory, but i doubt
that matters.

thanks again for any help,
-phil
...
Newly written programs should implement makeService() instead of
updateApplication().  As a bonus, purely service-based programs can easily
and cleanly do things like the above:
from twisted.application import service
class RegistryService(service.Service):
        def __init__(self):
            self.registry = registry.Registry()
def makeService(config):
        s = RegistryService()
        ...
        anotherS = SomeotherService()
        anotherS.setServiceParent(s)  # Or s.setServiceParent(anotherS)
        ...
        return s # or return anotherS
`s' can be the parent service of other services, in which case it can be
accessed simply by looking up the parent service, or it could be a child
service of something else, in which case it would be accessed via a call
to getServiceNamed() on the appropriate parent.

Re: [Twisted-Python] an easy twisted application question

Phil Christensen