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import socket
from sugar.presence.Service import Service
from sugar.p2p.Notifier import Notifier
from sugar.p2p.model.AbstractModel import AbstractModel
from sugar.p2p import network
class ModelRequestHandler(object):
def __init__(self, model):
self._model = model
def get_value(self, key):
return self._model.get_value(key)
def set_value(self, key, value):
return self._model.set_value(key, value)
class LocalModel(AbstractModel):
SERVICE_TYPE = "_olpc_model._tcp"
SERVICE_PORT = 6300
def __init__(self, activity, pservice, service):
AbstractModel.__init__(self)
self._pservice = pservice
self._activity = activity
self._service = service
self._values = {}
self._setup_service()
self._notifier = Notifier(service)
def get_value(self, key):
return self._values[key]
def set_value(self, key, value):
self._values[key] = value
self._notify_model_change(key)
self._notifier.notify(key)
def _setup_service(self):
service = self._pservice.share_activity(self._activity,
stype = LocalModel.SERVICE_TYPE,
address = '', port = LocalModel.SERVICE_PORT)
self._setup_server(service)
# FIXME this is duplicated with StreamReader
def _setup_server(self, service):
started = False
tries = 10
port = service.get_port()
while not started and tries > 0:
try:
p2p_server = network.GlibXMLRPCServer(("", port))
p2p_server.register_instance(ModelRequestHandler(self))
started = True
except(socket.error):
port = port + 1
tries = tries - 1
service.set_port(port)
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