86 lines
2.0 KiB
Python
86 lines
2.0 KiB
Python
MODEL_SERVICE_TYPE = "_olpc_model._tcp"
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MODEL_SERVICE_PORT = 6300
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import xmlrpclib
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from sugar.p2p.Service import Service
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import network
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class RemoteModel:
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def __init__(self, service):
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self._service = service
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addr = "http://%s:%d" % (service.get_address(), service.get_port())
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self._client = xmlrpclib.ServerProxy(addr)
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def get_value(self, key):
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self._client.get_value(key)
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def set_value(self, key, value):
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self._client.set_value(key, value)
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class ModelRequestHandler(object):
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def __init__(self, model):
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self._model = model
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def get_value(self, key):
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return self._model.get_value(key)
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def set_value(self, key, value):
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return self._model.set_value(key, value)
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class LocalModel:
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def __init__(self, group, model_id):
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self._group = group
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self._model_id = model_id
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self._values = {}
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self._setup_service()
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def get_value(self, key):
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return self._values[key]
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def set_value(self, key, value):
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self._values[key] = value
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def _setup_service(self):
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service = Service(self._model_id, MODEL_SERVICE_TYPE,
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'', MODEL_SERVICE_PORT)
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self._setup_server(service)
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service.register(self._group)
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# FIXME this is duplicated with StreamReader
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def _setup_server(self, service):
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started = False
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tries = 10
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port = service.get_port()
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while not started and tries > 0:
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try:
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p2p_server = network.GlibXMLRPCServer(("", port))
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p2p_server.register_instance(ModelRequestHandler(self))
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started = True
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except:
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port = port + 1
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tries = tries - 1
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service.set_port(port)
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class Store:
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def __init__(self, group):
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self._group = group
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self._local_models = {}
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def create_model(self, model_id):
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model = LocalModel(self._group, model_id)
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self._local_models[model_id] = model
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return model
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def get_model(self, model_id):
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if self._local_models.has_key(model_id):
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return self._local_models(model_id)
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else:
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service = self._group.get_service(model_id, MODEL_SERVICE_TYPE)
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if service:
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return RemoteModel(service)
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else:
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return None
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