class SecModStdCommModule(AbstractCommModule):
''' simple communication module in this case used for the
application with a security module'''
def __init__(self, sim_env):
''' Constructor
Input: sim_env simpy.Environment environment of this component
Output: -
'''
AbstractCommModule.__init__(self, sim_env)
# initialize layers
self.transp_lay = FakeSegmentTransportLayer(sim_env,
proj.BUS_MSG_CLASS)
self.datalink_lay = StdDatalinkLayer(sim_env)
self.physical_lay = StdPhysicalLayer(sim_env)
# preset used
if GeneralSpecPreset().enabled:
self.transp_lay = GeneralSpecPreset().transport_layer(
sim_env, proj.BUS_MSG_CLASS)
self.datalink_lay = GeneralSpecPreset().datalink_layer(sim_env)
self.physical_lay = GeneralSpecPreset().physical_layer(sim_env)
# connect layers
self.datalink_lay.physical_lay = self.physical_lay
self.transp_lay.datalink_lay = self.datalink_lay
def send_msg(self, sender_id, message_id, message):
''' send the message that was passed by further pushing it
to the next layer
Input: sender_id string id of the ecu that wants to send the message
message_id integer identifier of the message that is to be sent
message object message that will be sent
Output: -
Output: -
'''
yield self.sim_env.process(
self.transp_lay.send_msg(sender_id, message_id, message))
class SecModStdCommModule(AbstractCommModule):
''' simple communication module in this case used for the
application with a security module'''
def __init__(self, sim_env):
''' Constructor
Input: sim_env simpy.Environment environment of this component
Output: -
'''
AbstractCommModule.__init__(self, sim_env)
# initialize layers
self.transp_lay = FakeSegmentTransportLayer(sim_env, proj.BUS_MSG_CLASS)
self.datalink_lay = StdDatalinkLayer(sim_env)
self.physical_lay = StdPhysicalLayer(sim_env)
# preset used
if GeneralSpecPreset().enabled:
self.transp_lay = GeneralSpecPreset().transport_layer(sim_env, proj.BUS_MSG_CLASS)
self.datalink_lay = GeneralSpecPreset().datalink_layer(sim_env)
self.physical_lay = GeneralSpecPreset().physical_layer(sim_env)
# connect layers
self.datalink_lay.physical_lay = self.physical_lay
self.transp_lay.datalink_lay = self.datalink_lay
def send_msg(self, sender_id, message_id, message):
''' send the message that was passed by further pushing it
to the next layer
Input: sender_id string id of the ecu that wants to send the message
message_id integer identifier of the message that is to be sent
message object message that will be sent
Output: -
Output: -
'''
yield self.sim_env.process(self.transp_lay.send_msg(sender_id, message_id, message))
class StdCommModule(AbstractCommModule):
''' This class implements a secure communication
module, that enables secure communication between
several ECUs '''
def __init__(self, sim_env):
''' Constructor
Input: sim_env simpy.Environment environment of this component
MessageClass AbstractBusMessage class that is used for sending and receiving
Output: -
'''
AbstractCommModule.__init__(self, sim_env)
# layers
self.transp_lay = StdTransportLayer(sim_env)
self.datalink_lay = StdDatalinkLayer(sim_env)
self.physical_lay = StdPhysicalLayer(sim_env)
# preset used
if GeneralSpecPreset().enabled:
self.transp_lay = GeneralSpecPreset().transport_layer(sim_env, proj.BUS_MSG_CLASS)
self.datalink_lay = GeneralSpecPreset().datalink_layer(sim_env)
self.physical_lay = GeneralSpecPreset().physical_layer(sim_env)
# interconnect layers
self.datalink_lay.physical_lay = self.physical_lay
self.transp_lay.datalink_lay = self.datalink_lay
self.set_settings()
# Timing Variables
self.STDCM_RECEIVE_PROCESS = time.STDCM_RECEIVE_PROCESS
self.STDCM_SEND_PROCESS = time.STDCM_SEND_PROCESS
def set_settings(self):
''' sets the initial setting association between the settings variables
and the actual parameter
Input: -
Output: -
'''
self.settings = {}
self.settings['t_send_process'] = 'STDCM_SEND_PROCESS'
self.settings['t_receive_process'] = 'STDCM_RECEIVE_PROCESS'
def receive_msg(self):
''' simply receives the messages from the transport layer, adds
a delay to it and then pushes it to the application layer
Input: -
Output: message_data object Message that was sent on communication layer of sender side
message_id integer message identifier of the received message
'''
if self.STDCM_RECEIVE_PROCESS != 0:
G().to_t(self.sim_env, self.STDCM_RECEIVE_PROCESS * self._jitter, 'STDCM_RECEIVE_PROCESS', self.__class__.__name__)
yield self.sim_env.timeout(self.STDCM_RECEIVE_PROCESS * self._jitter)
[msg_id, msg_data] = yield self.sim_env.process(self.transp_lay.receive_msg())
return [msg_id, msg_data]
def send_msg(self, sender_id, message_id, message):
''' send the message that was passed by further pushing it
to the next layer and adding a delay
Input: sender_id string id of the sending component
message_id integer message identifier of the message that will be sent
message object Message that will be send on to the datalink layer
Output: -
'''
if self.STDCM_SEND_PROCESS != 0:
G().to_t(self.sim_env, self.STDCM_SEND_PROCESS * self._jitter, 'STDCM_SEND_PROCESS', self.__class__.__name__)
yield self.sim_env.timeout(self.STDCM_SEND_PROCESS * self._jitter)
yield self.sim_env.process(self.transp_lay.send_msg(sender_id, message_id, message))