def _setup_mobile_nodes(self):
"""configure the mobile nodes"""
for node in self._mobile_nodes:
node.forwarder = ICNForwarder(
0,
encoder=SimpleStringEncoder(),
routing=True,
interfaces=[
self._simulation_bus.add_interface(f"car{node.node_id}")
])
node.fetch = Fetch(
f"car{node.node_id}",
None,
255,
SimpleStringEncoder(),
interfaces=[
self._simulation_bus.add_interface(f"ftcar{node.node_id}")
])
node.mgmt_tool = MgmtClient(
node.forwarder.mgmt.mgmt_sock.getsockname()[1])
for stationary_node in self._stationary_nodes:
car_face_id = node.forwarder.linklayer.faceidtable.get_or_create_faceid(
AddressInfo(f"rsu{stationary_node.node_id}", 0))
self.to_rsu_faces[stationary_node.node_id][
node.node_id] = car_face_id
rsu_face_id = node.forwarder.linklayer.faceidtable.get_or_create_faceid(
AddressInfo(f"car{stationary_node.node_id}", 0))
self.to_car_faces[stationary_node.node_id][
node.node_id] = rsu_face_id
def _setup_stationary_nodes(self):
"""configure the NFN com. stack at the stationary nodes"""
for node in self._stationary_nodes:
# install the NFN forwarder and the mgmt client tool at the stationary node
if self._forwarder == "NFNForwarder":
node.nfn_forwarder = NFNForwarder(
0,
encoder=SimpleStringEncoder(),
interfaces=[
self._simulation_bus.add_interface(
f"rsu{node.node_id}")
],
ageing_interval=10)
elif self._forwarder == "NFNForwarderData":
node.nfn_forwarder = NFNForwarderData(
0,
encoder=SimpleStringEncoder(),
interfaces=[
self._simulation_bus.add_interface(
f"rsu{node.node_id}")
],
chunk_size=self._chunk_size,
num_of_forwards=1,
ageing_interval=10)
else:
self.logger.error(
"Forwarder: " + self._forwarder +
" is not supported! Use 'NFNForwarder' or 'NFNForwarderData'!"
)
# install the optimizer
if self._optimizer == "ToDataFirstOptimizer":
node.nfn_forwarder.nfnlayer.optimizer = ToDataFirstOptimizer(
node.nfn_forwarder.icnlayer.cs,
node.nfn_forwarder.icnlayer.fib,
node.nfn_forwarder.icnlayer.pit,
node.nfn_forwarder.linklayer.faceidtable)
elif self._optimizer == "EdgeComputingOptimizer":
node.nfn_forwarder.nfnlayer.optimizer = EdgeComputingOptimizer(
node.nfn_forwarder.icnlayer.cs,
node.nfn_forwarder.icnlayer.fib,
node.nfn_forwarder.icnlayer.pit,
node.nfn_forwarder.linklayer.faceidtable)
# install the mgmt client tool at the node
node.mgmt_tool = MgmtClient(
node.nfn_forwarder.mgmt.mgmt_sock.getsockname()[1])
node.nfn_forwarder.icnlayer.cs.set_cs_timeout(60)
def __init__(self):
"""define the configuration"""
self.number_of_rsus = 4
self.number_of_cars = 5
self.to_car_faces = [[0] * self.number_of_cars for i in range(self.number_of_rsus)] #rsu, car -> faceid
self.to_rsu_faces = [[0] * self.number_of_cars for i in range(self.number_of_rsus)] #rsu, car -> faceid
self.car_speed = [60, 60, 60, 60, 60] #in km/h
self.car_direction = [1, 1 ,1 ,1 ,1] # 1 or -1, consider starting rsu by choosing direction.
self.starting_rsu = [0, 0, 0, 0, 0]
self.rsu_distance = 0.5 #in km, range is identical here
self.computations = self.get_computations() #Store computations in here, car will randomly choose one
self.named_functions ={"/rsu/func/f1": "PYTHON\nf\ndef f(a, b, c):\n return a+b+c",
"/rsu/func/f2": "PYTHON\nf\ndef f(a, b, c):\n return a*b*c"} #named functions stored on the
self.chunk_size = 8192
self.optimizer = EdgeComputingOptimizer #NFN resolution strategy optimizer
self.encoder_type = SimpleStringEncoder()
self.simulation_bus = SimulationBus(packetencoder=self.encoder_type)
self.rsu_name = Name("/rsu")
self.car_to_computation = [0,0,0,0,0] #index which car issues which computation
self._compute_rsu_connection_time()
self.setup_network()
def main(args):
name_str = args.name
name = None
if 'NFN' in name_str and '_' not in name_str:
name = parse_nfn_str(name_str)
if name is None:
if '[' in name_str and ']' in name_str:
name = unescape_str_to_Name(args.name)
else:
name = Name(args.name)
name = unescape_name(name)
name.format = args.format
log_level = 255
encoder = NdnTlvEncoder(
) if args.format == 'ndntlv' else SimpleStringEncoder()
fetchTool = Fetch(ip=args.ip,
port=args.port,
log_level=log_level,
encoder=encoder,
autoconfig=args.autoconfig)
content = fetchTool.fetch_data(name, timeout=10)
print(content)
fetchTool.stop_fetch()
def __init__(self,
packetencoder: BasicEncoder = SimpleStringEncoder(),
print_keep_alive=True,
log_level=logging.DEBUG):
super().__init__("SimulationBus", log_level)
self.interfacetable: Dict[str, SimulationInterface] = {}
self.packetencoder = packetencoder
self.print_keep_alive = print_keep_alive
def setUp(self):
self.encoder_type = SimpleStringEncoder()
self.simulation_bus = SimulationBus(packetencoder=self.encoder_type)
chunk_size = 8192
self.chunkifyer = SimpleContentChunkifyer(chunk_size)
# Initialize two cars
self.cars = []
self.fetch_tool_cars = []
self.mgmt_client_cars = []
for i in range(2):
self.cars.append(
ICNForwarder(
0,
encoder=self.encoder_type,
routing=True,
interfaces=[self.simulation_bus.add_interface(f"car{i}")]))
self.fetch_tool_cars.append(
Fetch(f"car{i}",
None,
255,
self.encoder_type,
interfaces=[
self.simulation_bus.add_interface(f"ftcar{i}")
]))
self.mgmt_client_cars.append(
MgmtClient(self.cars[i].mgmt.mgmt_sock.getsockname()[1]))
self.cars[i].icnlayer.cs.set_cs_timeout(40)
# Initialize RSUs
self.rsus = []
self.fetch_tools = []
self.mgmt_clients = []
for i in range(3):
self.rsus.append(
NFNForwarderData(
0,
encoder=self.encoder_type,
interfaces=[self.simulation_bus.add_interface(f"rsu{i}")],
chunk_size=chunk_size,
num_of_forwards=1,
ageing_interval=10))
self.fetch_tools.append(
Fetch(f"rsu{i}",
None,
255,
self.encoder_type,
interfaces=[self.simulation_bus.add_interface(f"ft{i}")
]))
self.rsus[i].nfnlayer.optimizer = EdgeComputingOptimizer(
self.rsus[i].icnlayer.cs, self.rsus[i].icnlayer.fib,
self.rsus[i].icnlayer.pit, self.rsus[i].linklayer.faceidtable)
self.mgmt_clients.append(
MgmtClient(self.rsus[i].mgmt.mgmt_sock.getsockname()[1]))
self.fetch_tools[i].timeoutpreventionlayer.timeout_interval = 40
self.rsus[i].icnlayer.cs.set_cs_timeout(60)
def main(args):
# Log Level
if args.logging == 'error':
log_level = logging.ERROR
elif args.logging == 'warning':
log_level = logging.WARNING
elif args.logging == 'info':
log_level = logging.INFO
elif args.logging == 'debug':
log_level = logging.DEBUG
else:
log_level = 255
logger = Logger("NFNForwarder", log_level)
# Info
logger.info("Starting a NFN Forwarder...")
logger.info("UDP Port: " + str(args.port))
logger.info("Log Level: " + args.logging)
logger.info("Packet Format: " + args.format)
# Packet encoder
encoder = NdnTlvEncoder(
log_level) if args.format == 'ndntlv' else SimpleStringEncoder(
log_level)
if args.optimizer == "Edge":
forwarder = PiCN.ProgramLibs.NFNForwarder.NFNForwarder(
args.port, log_level, encoder, ageing_interval=1)
logger.info("Edge Computing Node")
forwarder.icnlayer.pit.set_pit_timeout(2)
forwarder.icnlayer.cs.set_cs_timeout(30)
forwarder.nfnlayer.optimizer = EdgeComputingOptimizer(
forwarder.icnlayer.cs, forwarder.icnlayer.fib,
forwarder.icnlayer.pit, forwarder.linklayer.faceidtable)
elif args.optimizer == "MapReduce":
forwarder = PiCN.ProgramLibs.NFNForwarder.NFNForwarder(
args.port, log_level, encoder)
logger.info("Using MapReduce Optimizer")
forwarder.nfnlayer.optimizer = MapReduceOptimizer(
forwarder.icnlayer.cs, forwarder.icnlayer.fib,
forwarder.icnlayer.pit, forwarder.linklayer.faceidtable)
elif args.optimizer == "Thunks":
forwarder = PiCN.ProgramLibs.NFNForwarder.NFNForwarder(args.port,
log_level,
encoder,
use_thunks=True)
logger.info("Using Thunks for Planning and Optimizing")
else:
forwarder = PiCN.ProgramLibs.NFNForwarder.NFNForwarder(
args.port, log_level, encoder)
forwarder.start_forwarder()
forwarder.linklayer.process.join()
def __init__(self,
ip: str,
port: int,
log_level=255,
encoder: BasicEncoder = None,
autoconfig: bool = False,
interfaces=None):
# create encoder and chunkifyer
if encoder is None:
self.encoder = SimpleStringEncoder(log_level=log_level)
else:
encoder.set_log_level(log_level)
self.encoder = encoder
self.chunkifyer = SimpleContentChunkifyer()
# initialize layers
synced_data_struct_factory = PiCNSyncDataStructFactory()
synced_data_struct_factory.register("faceidtable", FaceIDDict)
synced_data_struct_factory.create_manager()
faceidtable = synced_data_struct_factory.manager.faceidtable()
if interfaces is None:
interfaces = [UDP4Interface(0)]
else:
interfaces = interfaces
# create layers
self.linklayer = BasicLinkLayer(interfaces,
faceidtable,
log_level=log_level)
self.packetencodinglayer = BasicPacketEncodingLayer(
self.encoder, log_level=log_level)
self.chunklayer = BasicChunkLayer(self.chunkifyer, log_level=log_level)
self.lstack: LayerStack = LayerStack(
[self.chunklayer, self.packetencodinglayer, self.linklayer])
self.autoconfig = autoconfig
if autoconfig:
self.autoconfiglayer: AutoconfigClientLayer = AutoconfigClientLayer(
self.linklayer)
self.lstack.insert(self.autoconfiglayer,
on_top_of=self.packetencodinglayer)
# setup communication
if port is None:
self.fid = self.linklayer.faceidtable.get_or_create_faceid(
AddressInfo(ip, 0))
else:
self.fid = self.linklayer.faceidtable.get_or_create_faceid(
AddressInfo((ip, port), 0))
# send packet
self.lstack.start_all()
def setUp(self):
self.encoder_type = SimpleStringEncoder()
self.simulation_bus = SimulationBus(packetencoder=self.encoder_type)
chunk_size = 4
self.chunkifyer = SimpleContentChunkifyer(chunk_size)
self.car = ICNForwarder(
0,
encoder=self.encoder_type,
routing=True,
interfaces=[self.simulation_bus.add_interface("car")])
self.fetch_tool_car = Fetch(
"car",
None,
255,
self.encoder_type,
interfaces=[self.simulation_bus.add_interface("ftcar")])
self.mgmt_client_car = MgmtClient(
self.car.mgmt.mgmt_sock.getsockname()[1])
self.rsus = []
self.fetch_tools = []
self.mgmt_clients = []
for i in range(4):
self.rsus.append(
NFNForwarderData(
0,
encoder=self.encoder_type,
interfaces=[self.simulation_bus.add_interface(f"rsu{i}")],
chunk_size=chunk_size,
num_of_forwards=0))
self.fetch_tools.append(
Fetch(f"rsu{i}",
None,
255,
self.encoder_type,
interfaces=[self.simulation_bus.add_interface(f"ft{i}")
]))
self.rsus[i].nfnlayer.optimizer = EdgeComputingOptimizer(
self.rsus[i].icnlayer.cs, self.rsus[i].icnlayer.fib,
self.rsus[i].icnlayer.pit, self.rsus[i].linklayer.faceidtable)
self.mgmt_clients.append(
MgmtClient(self.rsus[i].mgmt.mgmt_sock.getsockname()[1]))
self.fetch_tools[i].timeoutpreventionlayer.timeout_interval = 30
def __init__(self, database_path, port=9000, log_level=255, encoder: BasicEncoder = None, flush_database=False):
# debug level
logger = Logger("PushRepo", log_level)
# packet encoder
if encoder is None:
self.encoder = SimpleStringEncoder(log_level=log_level)
else:
encoder.set_log_level(log_level=log_level)
self.encoder = encoder
# setup data structures
synced_data_struct_factory = PiCNSyncDataStructFactory()
synced_data_struct_factory.register("cs", ContentStorePersistentExact)
synced_data_struct_factory.register("faceidtable", FaceIDDict)
synced_data_struct_factory.create_manager()
cs = synced_data_struct_factory.manager.cs(db_path=database_path + "/pushrepo.db")
if flush_database:
cs.delete_all()
faceidtable = synced_data_struct_factory.manager.faceidtable()
# default interface
interfaces = [UDP4Interface(port)]
mgmt_port = interfaces[0].get_port()
# initialize layers
self.linklayer = BasicLinkLayer(interfaces, faceidtable, log_level=log_level)
self.packetencodinglayer = BasicPacketEncodingLayer(self.encoder, log_level=log_level)
self.repolayer = PushRepositoryLayer(log_level=log_level)
self.lstack: LayerStack = LayerStack([
self.repolayer,
self.packetencodinglayer,
self.linklayer
])
self.repolayer.cs = cs
# mgmt
self.mgmt = Mgmt(cs, None, None, self.linklayer, mgmt_port, self.stop_forwarder,
log_level=log_level)
def main(args):
prefix = Name(args.icnprefix)
log_level = logging.DEBUG
if args.format == "ndntlv":
encoder = NdnTlvEncoder()
else:
encoder = SimpleStringEncoder(log_level=log_level)
repo = ICNDataRepository(args.datapath,
prefix,
args.port,
log_level,
encoder=encoder,
autoconfig=args.autoconfig)
repo.start_repo()
repo.linklayer.process.join()
def main(args):
# Packet encoder
encoder = NdnTlvEncoder(
) if args.format == 'ndntlv' else SimpleStringEncoder()
# Generate interest packet
interest: Interest = Interest(args.name)
encoded_interest = encoder.encode(interest)
# Send interest packet
sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
sock.settimeout(args.timeout)
sock.bind(("0.0.0.0", 0))
try:
resolved_hostname = socket.gethostbyname(args.ip)
except:
print("Resolution of hostname failed.")
sys.exit(-2)
sock.sendto(encoded_interest, (resolved_hostname, args.port))
# Receive content object
try:
wire_packet, addr = sock.recvfrom(8192)
except:
print("Timeout.")
sys.exit(-1)
# Print
if args.plain is False:
printer = NdnTlvPrinter(wire_packet)
printer.formatted_print()
else:
encoder = NdnTlvEncoder()
if encoder.is_content(wire_packet):
sys.stdout.buffer.write(encoder.decode_data(wire_packet)[1])
else:
sys.exit(-2)
def __init__(self, packetencoder: BasicEncoder = SimpleStringEncoder()):
self.interfacetable: Dict[SimulationInterface] = {}
self.packetencoder = packetencoder
def setUp(self):
self.encoder1 = SimpleStringEncoder()
def get_encoder(self):
return SimpleStringEncoder()
class test_SimpleStringEncoder(unittest.TestCase):
"""Test the SimpleStringEncoder"""
def setUp(self):
self.encoder1 = SimpleStringEncoder()
def tearDown(self):
pass
def test_Encoder_encode_interest_equal(self):
"""Test the interest encoding of Encoder: equal"""
i = Interest("/test/data")
ei = self.encoder1.encode(i)
self.assertEqual(ei.decode(), "I:/test/data:")
def test_Encoder_encode_interest_not_equal(self):
"""Test the interest encoding of Encoder: not equal"""
i = Interest("/data/test")
ei = self.encoder1.encode(i)
self.assertNotEqual(ei.decode(), "I:/test/data:")
def test_Encoder_decode_interest_equal(self):
"""Test the interest decoding of Encoder: equal"""
data = "I:/test/data:".encode()
di = self.encoder1.decode(data)
cmp_interest = Interest("/test/data")
self.assertTrue(di == cmp_interest)
def test_Encoder_decode_interest_equal(self):
"""Test the interest decoding of Encoder: not equal"""
data = "I:/data/test:".encode()
di = self.encoder1.decode(data)
cmp_interest = Interest("/test/data")
self.assertFalse(di == cmp_interest)
def test_Encoder_encode_decode_interest(self):
"""Test the interest decoding of Encoder: equal"""
i = Interest("/data/test")
ei = self.encoder1.encode(i)
di = self.encoder1.decode(ei)
self.assertTrue(i == di)
def test_Encoder_decode_content_equal(self):
"""Test the Content decoding of Encoder: equal"""
data = "C:/data/test::HelloWorld".encode()
dc = self.encoder1.decode(data)
cmp_interest = Content("/data/test", "HelloWorld")
self.assertTrue(dc == cmp_interest)
def test_Encoder_decode_content_not_equal(self):
"""Test the Content decoding of Encoder: not equal"""
data = "C:/data/test::HelloWorld2".encode()
dc = self.encoder1.decode(data)
cmp_interest = Content("/data/test", "HelloWorld")
self.assertFalse(dc == cmp_interest)
def test_Encoder_encode_decode_content(self):
"""Test the content decoding of Encoder"""
c = Content("/data/test", "HelloWorld")
ec = self.encoder1.encode(c)
dc = self.encoder1.decode(ec)
self.assertTrue(c == dc)
def test_Encoder_encode_decode_nack(self):
"""Test the nack decoding of Encoder"""
interest = Interest("/data/test")
n = Nack("/data/test", NackReason.NO_CONTENT, interest=interest)
en = self.encoder1.encode(n)
dn = self.encoder1.decode(en)
self.assertTrue(n == dn)
def __init__(self,
port=9000,
log_level=255,
encoder: BasicEncoder = None,
interfaces: List[BaseInterface] = None,
executors: BaseNFNExecutor = None,
ageing_interval: int = 3,
use_thunks=False):
# debug level
logger = Logger("NFNForwarder", log_level)
logger.info("Start PiCN NFN Forwarder on port " + str(port))
# packet encoder
if encoder is None:
self.encoder = SimpleStringEncoder(log_level=log_level)
else:
encoder.set_log_level(log_level)
self.encoder = encoder
# setup data structures
synced_data_struct_factory = PiCNSyncDataStructFactory()
synced_data_struct_factory.register("cs", ContentStoreMemoryExact)
synced_data_struct_factory.register(
"fib", ForwardingInformationBaseMemoryPrefix)
synced_data_struct_factory.register("pit",
PendingInterstTableMemoryExact)
synced_data_struct_factory.register("faceidtable", FaceIDDict)
synced_data_struct_factory.register("computation_table",
NFNComputationList)
synced_data_struct_factory.register("timeoutprevention_dict",
TimeoutPreventionMessageDict)
if use_thunks:
synced_data_struct_factory.register("thunktable", ThunkList)
synced_data_struct_factory.register("plantable", PlanTable)
synced_data_struct_factory.create_manager()
cs = synced_data_struct_factory.manager.cs()
fib = synced_data_struct_factory.manager.fib()
pit = synced_data_struct_factory.manager.pit()
faceidtable = synced_data_struct_factory.manager.faceidtable()
self.parser = DefaultNFNParser()
if use_thunks:
thunktable = synced_data_struct_factory.manager.thunktable()
plantable = synced_data_struct_factory.manager.plantable(
self.parser)
#setup chunkifier
self.chunkifier = SimpleContentChunkifyer()
# default interface
if interfaces is not None:
self.interfaces = interfaces
mgmt_port = port
else:
interfaces = [UDP4Interface(port)]
mgmt_port = interfaces[0].get_port()
# initialize layers
self.linklayer = BasicLinkLayer(interfaces,
faceidtable,
log_level=log_level)
self.packetencodinglayer = BasicPacketEncodingLayer(
self.encoder, log_level=log_level)
self.icnlayer = BasicICNLayer(log_level=log_level,
ageing_interval=ageing_interval)
self.chunklayer = BasicChunkLayer(self.chunkifier, log_level=log_level)
# setup nfn
self.icnlayer._interest_to_app = True
if executors is None:
self.executors = {"PYTHON": NFNPythonExecutor()}
else:
self.executors = executors
self.r2cclient = TimeoutR2CHandler()
comp_table = synced_data_struct_factory.manager.computation_table(
self.r2cclient, self.parser)
self.nfnlayer = BasicNFNLayer(cs,
fib,
pit,
faceidtable,
comp_table,
self.executors,
self.parser,
self.r2cclient,
log_level=log_level)
if use_thunks:
self.thunk_layer = BasicThunkLayer(cs,
fib,
pit,
faceidtable,
thunktable,
plantable,
self.parser,
log_level=log_level)
self.nfnlayer.optimizer = ThunkPlanExecutor(
cs, fib, pit, faceidtable, plantable)
timeoutprevention_dict = synced_data_struct_factory.manager.timeoutprevention_dict(
)
self.timeoutpreventionlayer = BasicTimeoutPreventionLayer(
timeoutprevention_dict, comp_table, pit=pit, log_level=log_level)
if use_thunks:
self.lstack: LayerStack = LayerStack([
self.nfnlayer, self.chunklayer, self.timeoutpreventionlayer,
self.thunk_layer, self.icnlayer, self.packetencodinglayer,
self.linklayer
])
else:
self.lstack: LayerStack = LayerStack([
self.nfnlayer, self.chunklayer, self.timeoutpreventionlayer,
self.icnlayer, self.packetencodinglayer, self.linklayer
])
self.icnlayer.cs = cs
self.icnlayer.fib = fib
self.icnlayer.pit = pit
# mgmt
self.mgmt = Mgmt(self.icnlayer.cs,
self.icnlayer.fib,
self.icnlayer.pit,
self.linklayer,
mgmt_port,
self.stop_forwarder,
log_level=log_level)
def __init__(self,
packetencoder: BasicEncoder = SimpleStringEncoder(),
print_keep_alive=True):
self.interfacetable: Dict[str, SimulationInterface] = {}
self.packetencoder = packetencoder
self.print_keep_alive = print_keep_alive
def __init__(self,
run_id: int,
mobile_nodes: List[MobileNode],
stationary_nodes: List[StationaryNode],
stationary_node_distance: float,
named_functions: dict,
function_names: list,
forwarder: str = "NFNForwarder",
optimizer: str = "ToDataFirstOptimizer",
use_distribution_helper: bool = False,
log_level=logging.DEBUG):
"""
Configuration of the mobility simulation
:param run_id the identifier of the simulation run
:param mobile_nodes a list of mobile nodes part of the simulation
:param stationary_nodes a list of stationary nodes forming the infrastructure
:param stationary_node_distance the distance between the stationary nodes
:param named_functions a dictionary of named function definitions used to be executed
:param function_names a list of function names to be assigned to the mobile nodes
:param forwarder the NFN forwarder to be used
:param optimizer the NFN resolution strategy optimizer to be used in the simulation
:param use_distribution_helper A flag indicating if the default distribution helper (ZipfMandelbrotDistribution)
shall be used or not; default = False
:param log_level the log level of the logger to be used; default: logging.DEBUG
"""
self._run_id = run_id
self._forwarder = forwarder
self._optimizer = optimizer
self._mobile_nodes = mobile_nodes
self._stationary_nodes = stationary_nodes
self._stationary_node_distance = stationary_node_distance
self.logger = Logger("MobilitySimulation", log_level)
self.to_car_faces = [[0] * len(self._mobile_nodes)
for i in range(len(self._stationary_nodes))
] # rsu, car -> faceid
self.to_rsu_faces = [[0] * len(self._mobile_nodes)
for i in range(len(self._stationary_nodes))
] # rsu, car -> faceid
self._velocities = []
self._heading_directions = []
self._starting_points = []
for node in self._mobile_nodes:
self._velocities.append(node.speed)
self._heading_directions.append(node.direction)
self._starting_points.append(node.spawn_point)
self._is_running = False # flag indicating if the simulation is running or not
self._function_names = function_names # list of function names to be invoked by the nodes
self._named_functions = named_functions # a dict of function definitions to be invoked
self._chunk_size = 8192
self._simulation_bus = SimulationBus(
packetencoder=SimpleStringEncoder())
self._stationary_node_name_prefix = Name("/rsu")
self._mobile_node_to_computation = [0] * len(
mobile_nodes) # index which mobile node issues which computation
if use_distribution_helper:
# TODO in the future support more distribution types, e.g., uniform, gaussian, etc.
dist_array = ZipfMandelbrotDistribution.create_zipf_mandelbrot_distribution(
len(self._function_names), 0.7, 0.7)
for i in range(0, len(mobile_nodes)):
self._mobile_node_to_computation[i] = ZipfMandelbrotDistribution.\
get_next_zipfmandelbrot_random_number(dist_array, len(self._function_names)) - 1
# get_next_zipfmandelbrot_random_number(dist_array, len(self._function_names), run_id) - 1
self._compute_rsu_connection_time()
self._setup_simulation_network()
def __init__(self, foldername: Optional[str], prefix: Name,
port=9000, log_level=255, encoder: BasicEncoder = None,
autoconfig: bool = False, autoconfig_routed: bool = False, interfaces: List[BaseInterface] = None,
use_thunks=False):
"""
:param foldername: If None, use an in-memory repository. Else, use a file system repository.
"""
logger = Logger("ICNRepoSession", log_level)
logger.info("Start PiCN Data Repository with Sessions")
# packet encoder
if encoder is None:
self.encoder = SimpleStringEncoder(log_level=log_level)
else:
encoder.set_log_level(log_level)
self.encoder = encoder
# chunkifyer
self.chunkifyer = SimpleContentChunkifyer()
# repo
manager = multiprocessing.Manager()
if foldername is None:
self.repo: BaseRepository = SimpleMemoryRepository(prefix, manager, logger)
else:
self.repo: BaseRepository = SimpleFileSystemRepository(foldername, prefix, manager, logger)
# initialize layers
synced_data_struct_factory = PiCNSyncDataStructFactory()
synced_data_struct_factory.register("faceidtable", FaceIDDict)
if use_thunks:
synced_data_struct_factory.register("thunktable", ThunkList)
synced_data_struct_factory.register("plantable", PlanTable)
synced_data_struct_factory.create_manager()
faceidtable = synced_data_struct_factory.manager.faceidtable()
if use_thunks:
self.parser = DefaultNFNParser()
thunktable = synced_data_struct_factory.manager.thunktable()
plantable = synced_data_struct_factory.manager.plantable(self.parser)
if interfaces is not None:
self.interfaces = interfaces
mgmt_port = port
else:
interfaces = [UDP4Interface(port)]
mgmt_port = interfaces[0].get_port()
self.linklayer = BasicLinkLayer(interfaces, faceidtable, log_level=log_level)
self.packetencodinglayer = BasicPacketEncodingLayer(self.encoder, log_level=log_level)
self.chunklayer = BasicChunkLayer(self.chunkifyer, log_level=log_level)
self.repolayer = SessionRepositoryLayer(self.repo, log_level=log_level)
if use_thunks:
self.thunklayer = BasicThunkLayer(None, None, None, faceidtable, thunktable, plantable, self.parser, self.repo, log_level=log_level)
logger.info("Using Thunks")
if use_thunks:
self.lstack: LayerStack = LayerStack([
self.repolayer,
self.chunklayer,
self.thunklayer,
self.packetencodinglayer,
self.linklayer
])
else:
self.lstack: LayerStack = LayerStack([
self.repolayer,
self.chunklayer,
self.packetencodinglayer,
self.linklayer
])
if autoconfig:
self.autoconfiglayer = AutoconfigRepoLayer(name=prefix.string_components[-1],
addr='127.0.0.1',
linklayer=self.linklayer, repo=self.repo,
register_global=autoconfig_routed, log_level=log_level)
self.lstack.insert(self.autoconfiglayer, below_of=self.chunklayer)
# mgmt
self.mgmt = Mgmt(None, None, None, self.linklayer, mgmt_port,
self.start_repo, repo_path=foldername,
repo_prfx=prefix, log_level=log_level)
def __init__(self,
port=9000,
log_level=255,
encoder: BasicEncoder = None,
routing: bool = False,
peers=None,
autoconfig: bool = False,
interfaces: List[BaseInterface] = None,
ageing_interval: int = 3,
node_name: str = None):
# debug level
logger = Logger("ICNForwarder",
log_level) # FIXME: Why isn't this self.logger???
self._node_name = node_name
# packet encoder
if encoder is None:
self.encoder = SimpleStringEncoder(log_level=log_level)
else:
encoder.set_log_level(log_level=log_level)
self.encoder = encoder
# setup data structures
synced_data_struct_factory = PiCNSyncDataStructFactory()
synced_data_struct_factory.register("cs", ContentStoreMemoryExact)
synced_data_struct_factory.register(
"fib", ForwardingInformationBaseMemoryPrefix)
synced_data_struct_factory.register("pit",
PendingInterestTableMemoryExact)
synced_data_struct_factory.register("rib", TreeRoutingInformationBase)
synced_data_struct_factory.register("faceidtable", FaceIDDict)
synced_data_struct_factory.create_manager()
cs = synced_data_struct_factory.manager.cs()
fib = synced_data_struct_factory.manager.fib()
pit = synced_data_struct_factory.manager.pit()
rib = None
if routing:
rib = synced_data_struct_factory.manager.rib()
faceidtable = synced_data_struct_factory.manager.faceidtable()
# default interface
if interfaces is not None:
self.interfaces = interfaces
mgmt_port = port
else:
interfaces = [UDP4Interface(port)]
mgmt_port = interfaces[0].get_port()
# initialize layers
self.linklayer = BasicLinkLayer(interfaces,
faceidtable,
log_level=log_level)
self.packetencodinglayer = BasicPacketEncodingLayer(
self.encoder, log_level=log_level)
self.icnlayer = BasicICNLayer(log_level=log_level,
ageing_interval=ageing_interval)
self.lstack: LayerStack = LayerStack(
[self.icnlayer, self.packetencodinglayer, self.linklayer])
if autoconfig:
self.autoconfiglayer: AutoconfigServerLayer = AutoconfigServerLayer(
linklayer=self.linklayer,
address='127.0.0.1',
registration_prefixes=[(Name('/testnetwork/repos'), True)],
log_level=log_level)
self.lstack.insert(self.autoconfiglayer, below_of=self.icnlayer)
if routing:
self.routinglayer = BasicRoutingLayer(self.linklayer,
peers=peers,
log_level=log_level)
self.lstack.insert(self.routinglayer, below_of=self.icnlayer)
self.icnlayer.cs = cs
self.icnlayer.fib = fib
# ----- by Luc # FIXME: How to pass these parameters to __init__
self.icnlayer.fib.logger = logger
self.icnlayer.fib.node_name = self._node_name
# ----- by Luc # FIXME: How to pass these parameters to __init__
self.icnlayer.pit = pit
self.icnlayer.pit.logger = logger
self.icnlayer.pit.node_name = self._node_name
# -----
if autoconfig:
self.autoconfiglayer.fib = fib
if routing:
self.routinglayer.rib = rib
self.routinglayer.fib = fib
# mgmt
self.mgmt = Mgmt(cs,
fib,
pit,
self.linklayer,
mgmt_port,
self.stop_forwarder,
log_level=log_level)
def main(args):
logger = Logger(
"ICNPushRepo",
logging.DEBUG) # note: set later according to cli/config arguments
logger.info("Starting a Push Repository...")
# Parse Configuration file
conf = None
if args.config != "none":
try:
conf = ConfigParser(args.config)
logger.info("Successfully parsed configuration file.")
except CouldNotOpenConfigError:
conf = None
logger.warning(
"Could not open configuration file. Proceed with command line arguments or default values."
)
except CouldNotParseError:
logger.warning(
"Could not parse configuration file. Proceed with command line arguments or default values."
)
except MalformedConfigurationError as e:
logger.warning(
"Invalid configuration file. Proceed with command line arguments or default values. Hint: "
+ str(e))
# Choose command line arguments before config file arguments before default values
if not args.port:
if conf and conf.udp_port:
args.port = conf.udp_port
else:
args.port = default_port
if not args.format:
if conf and conf.format:
args.format = conf.format
else:
args.format = default_format
if not args.logging:
if conf and conf.logging:
args.logging = conf.logging
else:
args.logging = default_logging
# Log Level
if args.logging == 'error':
log_level = logging.ERROR
elif args.logging == 'warning':
log_level = logging.WARNING
elif args.logging == 'info':
log_level = logging.INFO
elif args.logging == 'debug':
log_level = logging.DEBUG
else:
log_level = 255
logger.setLevel(log_level)
# Info
logger.info("UDP Port: " + str(args.port))
logger.info("Log Level: " + args.logging)
logger.info("Packet Format: " + args.format)
logger.info("Database: " + args.database_path)
logger.info("Flush DB: " + str(args.flush_database))
# Packet encoder
encoder = NdnTlvEncoder(
log_level) if args.format == 'ndntlv' else SimpleStringEncoder(
log_level)
# Start
forwarder = PiCN.ProgramLibs.ICNPushRepository.ICNPushRepository(
args.database_path, args.port, log_level, encoder, args.flush_database)
forwarder.start_forwarder()
forwarder.linklayer.process.join()
