def connectionMade(self):
"""
Called whena a connection is made to the Mercury Server. It initialises
the FrameReceiver, and then sets up the various message handlers and
forwarders that we require.
"""
FrameReceiver.connectionMade(self)
self.request_forwarder = ReflectionRequestForwarder(self)
self.request_handler = SystemRequestHandler(self)
self.response_forwarder = ReflectionResponseForwarder(self)
self.response_handler = SystemResponseHandler(self)
self.device = None
class DroidHG(FrameReceiver):
"""
Implementation of the Mercury protocol, as a FrameReceiver.
"""
__logger = getLogger(__name__ + '.droidhg')
name = 'droidhg'
def connectionMade(self):
"""
Called whena a connection is made to the Mercury Server. It initialises
the FrameReceiver, and then sets up the various message handlers and
forwarders that we require.
"""
FrameReceiver.connectionMade(self)
self.request_forwarder = ReflectionRequestForwarder(self)
self.request_handler = SystemRequestHandler(self)
self.response_forwarder = ReflectionResponseForwarder(self)
self.response_handler = SystemResponseHandler(self)
self.device = None
def close(self):
"""
Closes the connection.
"""
self.transport.loseConnection()
def frameReceived(self, frame):
"""
Called whenever a frame has been received.
This extracts the message, and routes it appropriately to a callback
function, or a request handler.
If something sends a response, this is forwarded back to the client.
"""
message = frame.message()
response = None
if self.device and self.device.hasCallback(message.id):
response = self.device.callCallback(message.id, message)
elif message.type == Message.REFLECTION_REQUEST:
self.request_forwarder.handle(message)
elif message.type == Message.REFLECTION_RESPONSE:
self.response_forwarder.handle(message)
elif message.type == Message.SYSTEM_REQUEST:
response = self.request_handler.handle(message)
elif message.type == Message.SYSTEM_RESPONSE:
response = self.response_handler.handle(message)
else:
self.__logger.error("got unexpected message type " + message.type)
if response is not None:
self.write(response)
if self.device is not None:
self.device.last_message_at = time()
def write(self, message):
"""
Writes a message to a client, encapsulating it in a Frame first.
"""
self.__write(Frame.fromMessage(message))
def __write(self, frame):
"""
Writes a message to a client.
"""
self.transport.write(str(frame))