def key_error_node():
input1 = input("Key Error! Please check node name. " +
"Display list of nodes (y/n)?:")
if input1 == "y" or input1 == "Y":
print("List of Nodes: ")
print("============== ")
for k in d_node.keys():
print(k)
def main():
# Assign dict with ECT to BVLAN.
# (assuming BVLAN 4000 has ECT#1 and 4015 has ECT#15).
global d_ect # Global declaration of dict, as also accessed by other cls.
d_ect = {
"4000": b"\x00",
"4001": b"\xff",
"4002": b"\x88",
"4003": b"\x77",
"4004": b"\x44",
"4005": b"\x33",
"4006": b"\xcc",
"4007": b"\xbb",
"4008": b"\x22",
"4009": b"\x11",
"4010": b"\x66",
"4011": b"\x55",
"4012": b"\xaa",
"4013": b"\x99",
"4014": b"\xdd",
"4015": b"\xee",
}
# Add experimental ECT ID´s, for calculating max possible path diversity.
# Yeah right, VLAN´s > 4096 doesn´t exist - but that doesn´t matter here.
for x in range(4016, 4256, 1):
ectvalue = hex(x - 4000) # ECT value as string.
ectvalue_hex = ectvalue.replace("0x", "")
d_ect[str(x)] = bytes.fromhex(ectvalue_hex)
global d_ect_path
d_ect_path = {}
global d_node
global d_edges_weight
d_edges_weight = {}
# v3_0: Create d_edges_isid, to count ISID´s using an edge.
global d_edges_isid
d_edges_isid = {}
global d_edges
d_edges = {}
global d_node_xor
d_node_xor = {}
# v2_0: Statistics, on which byte a tiebreaker was found for ECT.
global d_tiebreaker_byte
d_tiebreaker_byte = {0: 0, 1: 0, 2: 0, 3: 0, 4: 0, 5: 0, 6: 0, 7: 0}
# To speed up computation in large networks, reduce here the number of
# BVLANs to be tested (range is "low_bvl_to_test" - "num_bv_to_test" ).
global max_bvl_to_test
# max_bvl_to_test should be your highest BVLAN plus one.
max_bvl_to_test = 4016
global low_bvl_to_test
low_bvl_to_test = 4000
# Plausibility checks, for correct BVLAN range.
assert max_bvl_to_test > low_bvl_to_test, "Please correct \
max_bvl_to_test and low_bvl_to_test. max value must be larger than low value!"
assert 4256 >= max_bvl_to_test >= 4000, "Please correct \
max_bvl_to_test! Specify value between 4000 and 4256"
assert 4256 >= low_bvl_to_test >= 4000, "Please correct \
low_bvl_to_test! Specify value between 4000 and 4256"
# Plausibility check on d_node.
# Check for unidirectional links and cost mismatch.
for i in d_node:
for j in d_node[i]["Links"]:
unidirectional_link_check = True
link_cost_mismatch = True
for k in d_node[j[0]]["Links"]:
if i == k[0]:
unidirectional_link_check = False
if j[1] == k[1]:
link_cost_mismatch = False
assert unidirectional_link_check is False,\
"Unidirectional Link found on Node {}!".format(i)
assert link_cost_mismatch is False,\
"Link cost mismatch found on Node {}!".format(i)
# Check for ISID/BVL mismatch and same BridgeID.
for i in d_node:
for isid in d_node[i]["ISID"]:
check_isid = isid[0]
check_bvl = isid[1]
for j in d_node:
if j != i:
assert d_node[i]["BridgeID"] != d_node[j]["BridgeID"],\
"Same BridgeID found on Node {} and {}!".format(i, j)
for isid in d_node[j]["ISID"]:
if isid[0] == check_isid:
assert check_bvl == isid[1],\
"Wrong ISID/BVLAN relation on Node {}!".format(j)
""" Modify your SPB network here to test behavior
with more ISID`s / BVLAN`s etc. """
# Temporary modification of d_node (i.e. to test more ISID`s):
# for k in d_node.keys():
# for i in range(10):
# d_node[k]["ISID"].append([100000+i, 4000+ i % 8, 1, 1])
# d_node[k]["ISID"].append([200000+i, 4000+i%256, 1, 1])10
# d_node["Node-5"]["ISID"].append([8000, 4008, 1, 1])
# d_node["Node-5"]["ISID"].append([8001, 4008, 1, 1])
# d_node["Node-5"]["ISID"].append([8002, 4008, 1, 1])
# d_node["Node-5"]["ISID"].append([8003, 4008, 1, 1])
# d_node["Node-5"]["ISID"].append([8004, 4008, 1, 1])
# d_node["Node-5"]["ISID"].append([8005, 4008, 1, 1])
# d_node["Node-5"]["ISID"].append([8006, 4008, 1, 1])
# d_node["Node-5"]["ISID"].append([8007, 4008, 1, 1])
# d_node["Node-3"]["ISID"].append([8000, 4008, 1, 1])
# d_node["Node-3"]["ISID"].append([8001, 4008, 1, 1])
# d_node["Node-3"]["ISID"].append([8002, 4008, 1, 1])
# d_node["Node-3"]["ISID"].append([8003, 4008, 1, 1])
# d_node["Node-3"]["ISID"].append([8004, 4008, 1, 1])
# d_node["Node-3"]["ISID"].append([8005, 4008, 1, 1])
# d_node["Node-3"]["ISID"].append([8006, 4008, 1, 1])
# d_node["Node-3"]["ISID"].append([8007, 4008, 1, 1])
# Remove "off" nodes from dict.
list_keys_to_remove = []
for k in d_node:
if d_node.get(k)["SystemState"] != "on":
list_keys_to_remove.append(k)
for k in range(len(list_keys_to_remove)):
d_node.pop(list_keys_to_remove[k])
# v2_0: Populate d_node_xor, results of xor operation of all BVLANs.
for bvl in range(low_bvl_to_test, max_bvl_to_test):
d_node_xor[bvl] = {}
for k in d_node:
d_node_xor[bvl][k] = []
for bvl in range(low_bvl_to_test, max_bvl_to_test):
for k in d_node:
# Populate dict with xor result of SystemID.
for i in range(8):
d_node_xor[bvl][k].append([
byte_xor(
d_node.get(k)["BridgeID"][i][0], d_ect.get(str(bvl)))
])
# Get maximum string lenght of node names.
global max_nodename
max_nodename = 0
for k in d_node.keys():
if len(k) > max_nodename:
max_nodename = len(k)
# v4_0: Get a set of all BVLANs and ISIDs in loaded dict,
# for having better display filter possibilites.
global set_bvls_in_use
global set_isids_in_use
set_bvls_in_use = set()
set_isids_in_use = set()
for k in d_node:
for i in range(len(d_node.get(k)["ISID"])):
set_bvls_in_use.add(d_node.get(k)["ISID"][i][1])
set_isids_in_use.add(d_node.get(k)["ISID"][i][0])
# Plausibility check, that all used BVLANs are calculated.
for i in set_bvls_in_use:
assert i in range(low_bvl_to_test, max_bvl_to_test), "Please correct \
max_bvl_to_test and low_bvl_to_test! BVLAN " + str(i) + " is used, bot not \
in that range!"
# GraphView_v1_1 and View_v5 Plausibility check, that no node has
# duplicate ISID´s
for k in d_node:
for x in range(len(d_node[k]["ISID"])):
dup_counter = 0
for y in range(len(d_node[k]["ISID"])):
if d_node[k]["ISID"][x][0] == d_node[k]["ISID"][y][0]:
dup_counter += 1
assert dup_counter <= 1, "Error, Node {} has ISID {} configured \
multiple times!".format(k, d_node[k]["ISID"][x][0])
# Create Graph and add all edges to d_edges, d_edges_isid,
# and d_edges_weight.
graph = Graph()
for k in d_node:
for i in range(len(d_node.get(k)["Links"])):
if d_node.get(k)["SystemState"] == "on":
# Only if node v is active (is a key in the d_node).
a = d_node.get(k)["Links"][i][0]
if a in d_node.keys():
graph.add_edge(k,
d_node.get(k)["Links"][i][0],
d_node.get(k)["Links"][i][1])
key_d_edges = str(k) + "___" + str(a)
d_edges[key_d_edges] = []
d_edges_isid[key_d_edges] = []
d_edges_weight[key_d_edges] = d_node.get(k)["Links"][i][1]
global d_dijkstra # Global declaration of dict, as accessed by other fct.
d_dijkstra = {} # Set every node as S.
start_time_dijkstra = time.time()
for n in d_node:
d_dijkstra[n] = {} # Initialize dict.
for bvl in range(low_bvl_to_test, max_bvl_to_test):
dijkstra = DijkstraSPF(graph, n, str(bvl))
d_dijkstra[n][bvl] = dijkstra
global time_apsp_calculation
time_apsp_calculation = time.time() - start_time_dijkstra
# Populate d_edges.
for src, dst, bvl in product(d_node, d_node, set_bvls_in_use):
for i in range(len(d_dijkstra[src][bvl].get_path(dst))):
if len(d_dijkstra[src][bvl].get_path(dst)) > 0 and \
i < len(d_dijkstra[src][bvl].get_path(dst))-1:
key_d_edges = d_dijkstra[src][bvl].get_path(dst)[i] + "___" +\
d_dijkstra[src][bvl].get_path(dst)[i+1]
if key_d_edges in d_edges.keys():
d_edges[key_d_edges].append([src, dst, bvl])
# Calculate tandem multicast mode.
start_time_mcast = time.time()
d_tandem_isid = {}
set_bvl = set()
d_tandem_mcast_src = {}
d_tandem_mcast_rcv = {}
global d_mcast_states
d_mcast_states = {} # End results to be displayed per node or in total.
for node in d_node:
d_mcast_states[node] = []
# Populate d_tandem_mcast_src.
for k in d_node:
for i in range(len(d_node.get(k)["ISID"])):
if d_node.get(k)["ISID"][i][2] == 1: # Check T Bit of ISID.
# Create the dict for MCSource and bvl.
if k in d_tandem_mcast_src.keys():
d_tandem_mcast_src[k].\
append(d_node.get(k)["ISID"][i][0])
else:
d_tandem_mcast_src[k] = \
[d_node.get(k)["ISID"][i][0]]
if d_node.get(k)["ISID"][i][0] not in d_tandem_isid.keys():
d_tandem_isid[d_node.get(k)["ISID"][i][0]] = \
[d_node.get(k)["ISID"][i][1]]
set_bvl.add(d_node.get(k)["ISID"][i][1])
else:
pass # Only add Tandem ISID to dict, if key not yet exist.
# Populate d_tandem_mcast_rcv.
for k in d_node:
for i in range(len(d_node.get(k)["ISID"])):
if d_node.get(k)["ISID"][i][3] == 1: # Check R Bit of ISID.
if k in d_tandem_mcast_rcv.keys():
d_tandem_mcast_rcv[k].append(d_node.get(k)["ISID"][i][0])
else:
d_tandem_mcast_rcv[k] = \
[d_node.get(k)["ISID"][i][0]]
if d_node.get(k)["ISID"][i][0] not in d_tandem_isid.keys():
d_tandem_isid[d_node.get(k)["ISID"][i][0]] = \
[d_node.get(k)["ISID"][i][1]]
set_bvl.add(d_node.get(k)["ISID"][i][1])
else:
pass # Only add Tandem ISID to dict, if key not yet exist.
# Calculate MC States, for every node, in every BVLAN.
for node, mc_src_a in product(d_node, d_tandem_mcast_src):
for isid in d_tandem_mcast_src[mc_src_a]: # For every isid.
for bvl, mc_rcv_b in product(d_tandem_isid[isid],
d_tandem_mcast_rcv):
if isid in d_tandem_mcast_rcv[mc_rcv_b] and node in \
d_dijkstra[mc_src_a][bvl].get_path(mc_rcv_b)[1:-1]:
pos_node_path = d_dijkstra[mc_src_a][bvl].get_path(
mc_rcv_b).index(node)
iil = d_dijkstra[mc_src_a][bvl].\
get_path(mc_rcv_b)[pos_node_path-1]
oil = d_dijkstra[mc_src_a][bvl].\
get_path(mc_rcv_b)[pos_node_path+1]
d_mcast_states[node].append(
[mc_src_a, isid, bvl, iil, oil])
elif isid in d_tandem_mcast_rcv[mc_rcv_b] and node in \
d_dijkstra[mc_src_a][bvl].get_path(mc_rcv_b)[0] and \
len(d_dijkstra[mc_src_a][bvl].get_path(mc_rcv_b)) > 1:
pos_node_path = d_dijkstra[mc_src_a][bvl].get_path(
mc_rcv_b).index(node)
iil = "-" # Node is START of path.
oil = d_dijkstra[mc_src_a][bvl].\
get_path(mc_rcv_b)[pos_node_path+1]
d_mcast_states[node].append(
[mc_src_a, isid, bvl, iil, oil])
elif isid in d_tandem_mcast_rcv[mc_rcv_b] and node in \
d_dijkstra[mc_src_a][bvl].get_path(
mc_rcv_b)[-1] and len(d_dijkstra[mc_src_a][bvl].get_path(
mc_rcv_b)) > 1:
pos_node_path = d_dijkstra[mc_src_a][bvl].get_path(
mc_rcv_b).index(node)
iil = d_dijkstra[mc_src_a][bvl].get_path(mc_rcv_b)[
pos_node_path - 1]
oil = "-" # Node is END of path.
d_mcast_states[node].append(
[mc_src_a, isid, bvl, iil, oil])
global time_mcast_calculation
time_mcast_calculation = time.time() - start_time_mcast
# Consolidate OIL of d_mcast_states.
# First step, remove entry`s with empty OIL, if:
# there are also entry´s with an OIL
# That is the case, if node is receiver and also forkout point.
for k in d_mcast_states.keys():
mcast_states_to_delete = [] # Empty initialize for all nodes:
for i in range(len(d_mcast_states[k])):
if d_mcast_states[k][i][4] == "-": # Check if node has emtpy OIL.
# If so, check if node is also forkout point.
for j in range(len(d_mcast_states[k])):
if d_mcast_states[k][i][0] == d_mcast_states[k][j][0] and \
d_mcast_states[k][i][1] == d_mcast_states[k][j][1] and \
d_mcast_states[k][i][2] == d_mcast_states[k][j][2] and \
d_mcast_states[k][i][3] == d_mcast_states[k][j][3] and \
d_mcast_states[k][i][4] != d_mcast_states[k][j][4]:
# Add entry with empty OIL to delete list.
mcast_states_to_delete.append(d_mcast_states[k][i])
for x in range(len(mcast_states_to_delete)):
if mcast_states_to_delete[x] in d_mcast_states[k]:
d_mcast_states[k].remove(mcast_states_to_delete[x])
# Second step, if OIL is not empty and has several entries - merge them.
# That is the case, if node is forkout point with several OIL`s or sender.
for k in d_mcast_states.keys():
mcast_states_to_delete = [] # Empty initialize for all nodes:
for i in range(len(d_mcast_states[k])):
# Initialize the OIL that will be applied to:
# mcast state after iteration.
new_oil = d_mcast_states[k][i][4]
# Check that entry was not already checked.
if d_mcast_states[k][i] not in mcast_states_to_delete:
# Check if node has OIL (is a forkout point).
if d_mcast_states[k][i][4] != "-":
for j in range(i + 1, len(d_mcast_states[k])):
if d_mcast_states[k][i][0] == \
d_mcast_states[k][j][0] and \
d_mcast_states[k][i][1] == \
d_mcast_states[k][j][1] and \
d_mcast_states[k][i][2] == \
d_mcast_states[k][j][2] and \
d_mcast_states[k][i][3] == \
d_mcast_states[k][j][3]:
# Add duplicate entry to delete list.
mcast_states_to_delete.append(d_mcast_states[k][j])
# If OIL not already in OIL -> merge it.
if d_mcast_states[k][j][4] not in new_oil:
new_oil += ", " + d_mcast_states[k][j][4]
# Finally, assign new OIL to mcast entry.
d_mcast_states[k][i][4] = new_oil
for x in range(len(mcast_states_to_delete)):
if mcast_states_to_delete[x] in d_mcast_states[k]:
d_mcast_states[k].remove(mcast_states_to_delete[x])
# Population of d_ect_path.
for a in d_node:
for b in d_node:
k = len(get_max_possible_path_a_to_b(a, b)) # Get number of hops.
if k in d_ect_path.keys():
if (a + " -> " + b) not in d_ect_path[k] and a != b:
d_ect_path[k].append(a + " -> " + b)
else:
pass # Path already exist for this key.
elif a != b:
d_ect_path[k] = [a + " -> " + b]
# v3_0: Populate d_edges_isid.
# For every edge:
for k in d_edges.keys():
# For every connection of an edge:
for i in range(len(d_edges[k])):
# For all ISIDs on source:
for i_src in range(len(d_node[d_edges[k][i][0]]["ISID"])):
# If ISID is on BVLAN of connection:
if d_edges[k][i][2] == \
d_node[d_edges[k][i][0]]["ISID"][i_src][1]:
# For all ISIDs on destination:
for i_dst in range(len(d_node[d_edges[k][i][1]]["ISID"])):
# Check if ISID is on source AND destination:
# If yes: Add connection to "d_edges_isid".
if d_node[d_edges[k][i][0]]["ISID"][i_src][0] == \
d_node[d_edges[k][i][1]]["ISID"][i_dst][0]:
d_edges_isid[k].append([
d_edges[k][i][0], d_edges[k][i][1],
d_node[d_edges[k][i][0]]["ISID"][i_src][1],
d_node[d_edges[k][i][0]]["ISID"][i_src][0]
])
# Main User Menu for getting input from user.
main_menu()
def menu1():
print("List of nodes: ")
print("============== ")
for k in d_node.keys():
print(k)
def main():
# Assign dict with ECT to BVLAN.
# (assuming BVLAN 4000 has ECT#1 and 4015 has ECT#15).
global d_ect # Global declaration of dict, as also accessed by other cls.
d_ect = {
"4000": b"\x00",
"4001": b"\xff",
"4002": b"\x88",
"4003": b"\x77",
"4004": b"\x44",
"4005": b"\x33",
"4006": b"\xcc",
"4007": b"\xbb",
"4008": b"\x22",
"4009": b"\x11",
"4010": b"\x66",
"4011": b"\x55",
"4012": b"\xaa",
"4013": b"\x99",
"4014": b"\xdd",
"4015": b"\xee",
}
# Add experimental ECT ID´s, for calculating max possible path diversity.
# Yeah right, VLAN´s > 4096 doesn´t exist - but that doesn´t matter here.
for x in range(4016, 4256, 1):
ectvalue = hex(x - 4000) # ECT value as string.
ectvalue_hex = ectvalue.replace("0x", "")
d_ect[str(x)] = bytes.fromhex(ectvalue_hex)
global d_ect_path
d_ect_path = {}
global d_node
global d_edges
d_edges = {}
# Plausibility check on d_node.
# Check for unidirectional links and cost mismatch.
for i in d_node:
for j in d_node[i]["Links"]:
unidirectional_link_check = True
link_cost_mismatch = True
for k in d_node[j[0]]["Links"]:
if i == k[0]:
unidirectional_link_check = False
if j[1] == k[1]:
link_cost_mismatch = False
assert unidirectional_link_check is False,\
"Unidirectional Link found on Node {}!".format(i)
assert link_cost_mismatch is False,\
"Link cost mismatch found on Node {}!".format(i)
# Check for ISID/BVL mismatch and same BridgeID.
for i in d_node:
for isid in d_node[i]["ISID"]:
check_isid = isid[0]
check_bvl = isid[1]
for j in d_node:
if j != i:
assert d_node[i]["BridgeID"] != d_node[j]["BridgeID"],\
"Same BridgeID found on Node {} and {}!".format(i, j)
for isid in d_node[j]["ISID"]:
if isid[0] == check_isid:
assert check_bvl == isid[1],\
"Wrong ISID/BVLAN relation on Node {}!".format(j)
""" Modify your SPB network here to test behavior
with more ISID`s / BVLAN`s etc. """
# Temporary modification of d_node (i.e. to test more ISID`s):
# for k in d_node.keys():
# for i in range(20):
# d_node[k]["ISID"].append([100000+i, 4000+i%256, 1, 1])
# d_node[k]["ISID"].append([200000+i, 4000+i%256, 1, 1])
# d_node[k]["ISID"].append([202020, 4015, 1, 1])
# d_node[k]["ISID"].append([202021, 4015, 1, 1])
# d_node[k]["ISID"].append([202022, 4015, 1, 1])
# d_node[k]["ISID"].append([202023, 4015, 1, 1])
# Remove "off" nodes from dict.
list_keys_to_remove = []
for k in d_node:
if d_node.get(k)["SystemState"] != "on":
list_keys_to_remove.append(k)
for k in range(len(list_keys_to_remove)):
d_node.pop(list_keys_to_remove[k])
# Get maximum string lenght of node names.
global max_nodename
max_nodename = 0
for k in d_node.keys():
if len(k) > max_nodename:
max_nodename = len(k)
# Get a set of all BVLAN´s in loaded dict,
# for having better display filter possibilites.
global set_bvls_in_use
set_bvls_in_use = set()
for k in d_node:
for i in range(len(d_node.get(k)["ISID"])):
set_bvls_in_use.add(d_node.get(k)["ISID"][i][1])
# Create Graph and add all edges to d_edges.
graph = Graph()
for k in d_node:
for i in range(len(d_node.get(k)["Links"])):
if d_node.get(k)["SystemState"] == "on":
# Only if node v is active (is a key in the d_node).
a = d_node.get(k)["Links"][i][0]
if a in d_node.keys():
graph.add_edge(k,
d_node.get(k)["Links"][i][0],
d_node.get(k)["Links"][i][1])
key_d_edges = str(k) + "___" + str(a)
d_edges[key_d_edges] = []
global d_dijkstra # Global declaration of dict, as accessed by other fct.
d_dijkstra = {} # Set every node as S.
start_time_dijkstra = time.time()
for n in d_node:
d_dijkstra[n] = {} # Initialize dict.
for bvl in range(4000, 4256):
dijkstra = DijkstraSPF(graph, n, str(bvl))
d_dijkstra[n][bvl] = dijkstra
global time_apsp_calculation
time_apsp_calculation = time.time() - start_time_dijkstra
# Populate d_edges.
for src, dst, bvl in product(d_node, d_node, set_bvls_in_use):
for i in range(len(d_dijkstra[src][bvl].get_path(dst))):
if len(d_dijkstra[src][bvl].get_path(dst)) > 0 and \
i < len(d_dijkstra[src][bvl].get_path(dst))-1:
key_d_edges = d_dijkstra[src][bvl].get_path(dst)[i] + "___" +\
d_dijkstra[src][bvl].get_path(dst)[i+1]
if key_d_edges in d_edges.keys():
d_edges[key_d_edges].append([src, dst, bvl])
# Calculate tandem multicast mode.
start_time_mcast = time.time()
d_tandem_isid = {}
set_bvl = set()
d_tandem_mcast_src = {}
d_tandem_mcast_rcv = {}
global d_mcast_states
d_mcast_states = {} # End results to be displayed per node or in total.
for node in d_node:
d_mcast_states[node] = []
# Populate d_tandem_mcast_src.
for k in d_node:
for i in range(len(d_node.get(k)["ISID"])):
if d_node.get(k)["ISID"][i][2] == 1: # Check T Bit of ISID.
# Create the dict for MCSource and bvl.
if k in d_tandem_mcast_src.keys():
d_tandem_mcast_src[k].\
append(d_node.get(k)["ISID"][i][0])
else:
d_tandem_mcast_src[k] = \
[d_node.get(k)["ISID"][i][0]]
if d_node.get(k)["ISID"][i][0] not in d_tandem_isid.keys():
d_tandem_isid[d_node.get(k)["ISID"][i][0]] = \
[d_node.get(k)["ISID"][i][1]]
set_bvl.add(d_node.get(k)["ISID"][i][1])
else:
pass # Only add Tandem ISID to dict, if key not yet exist.
# Populate d_tandem_mcast_rcv.
for k in d_node:
for i in range(len(d_node.get(k)["ISID"])):
if d_node.get(k)["ISID"][i][3] == 1: # Check R Bit of ISID.
if k in d_tandem_mcast_rcv.keys():
d_tandem_mcast_rcv[k].append(d_node.get(k)["ISID"][i][0])
else:
d_tandem_mcast_rcv[k] = \
[d_node.get(k)["ISID"][i][0]]
if d_node.get(k)["ISID"][i][0] not in d_tandem_isid.keys():
d_tandem_isid[d_node.get(k)["ISID"][i][0]] = \
[d_node.get(k)["ISID"][i][1]]
set_bvl.add(d_node.get(k)["ISID"][i][1])
else:
pass # Only add Tandem ISID to dict, if key not yet exist.
# Calculate MC States, for every node, in every BVLAN.
for node, mc_src_a in product(d_node, d_tandem_mcast_src):
for isid in d_tandem_mcast_src[mc_src_a]: # For every isid.
for bvl, mc_rcv_b in product(d_tandem_isid[isid],
d_tandem_mcast_rcv):
if isid in d_tandem_mcast_rcv[mc_rcv_b] and node in \
d_dijkstra[mc_src_a][bvl].get_path(mc_rcv_b)[1:-1]:
pos_node_path = d_dijkstra[mc_src_a][bvl].get_path(
mc_rcv_b).index(node)
iil = d_dijkstra[mc_src_a][bvl].\
get_path(mc_rcv_b)[pos_node_path-1]
oil = d_dijkstra[mc_src_a][bvl].\
get_path(mc_rcv_b)[pos_node_path+1]
d_mcast_states[node].append(
[mc_src_a, isid, bvl, iil, oil])
elif isid in d_tandem_mcast_rcv[mc_rcv_b] and node in \
d_dijkstra[mc_src_a][bvl].get_path(mc_rcv_b)[0] and \
len(d_dijkstra[mc_src_a][bvl].get_path(mc_rcv_b)) > 1:
pos_node_path = d_dijkstra[mc_src_a][bvl].get_path(
mc_rcv_b).index(node)
iil = "-" # Node is START of path.
oil = d_dijkstra[mc_src_a][bvl].\
get_path(mc_rcv_b)[pos_node_path+1]
d_mcast_states[node].append(
[mc_src_a, isid, bvl, iil, oil])
elif isid in d_tandem_mcast_rcv[mc_rcv_b] and node in \
d_dijkstra[mc_src_a][bvl].get_path(
mc_rcv_b)[-1] and len(d_dijkstra[mc_src_a][bvl].get_path(
mc_rcv_b)) > 1:
pos_node_path = d_dijkstra[mc_src_a][bvl].get_path(
mc_rcv_b).index(node)
iil = d_dijkstra[mc_src_a][bvl].get_path(mc_rcv_b)[
pos_node_path - 1]
oil = "-" # Node is END of path.
d_mcast_states[node].append(
[mc_src_a, isid, bvl, iil, oil])
global time_mcast_calculation
time_mcast_calculation = time.time() - start_time_mcast
# Consolidate OIL of d_mcast_states.
# First step, remove entry`s with empty OIL, if:
# there are also entry´s with an OIL
# That is the case, if node is receiver and also forkout point.
for k in d_mcast_states.keys():
mcast_states_to_delete = [] # Empty initialize for all nodes:
for i in range(len(d_mcast_states[k])):
if d_mcast_states[k][i][4] == "-": # Check if node has emtpy OIL
# If so, check if node is also forkout point
for j in range(len(d_mcast_states[k])):
if d_mcast_states[k][i][0] == d_mcast_states[k][j][0] and \
d_mcast_states[k][i][1] == d_mcast_states[k][j][1] and \
d_mcast_states[k][i][2] == d_mcast_states[k][j][2] and \
d_mcast_states[k][i][3] == d_mcast_states[k][j][3] and \
d_mcast_states[k][i][4] != d_mcast_states[k][j][4]:
# Add entry with empty OIL to delete list.
mcast_states_to_delete.append(d_mcast_states[k][i])
for x in range(len(mcast_states_to_delete)):
if mcast_states_to_delete[x] in d_mcast_states[k]:
d_mcast_states[k].remove(mcast_states_to_delete[x])
# Second step, if OIL is not empty and has several entries - merge them.
# That is the case, if node is forkout point with several OIL`s or sender.
for k in d_mcast_states.keys():
mcast_states_to_delete = [] # Empty initialize for all nodes:
for i in range(len(d_mcast_states[k])):
# Initialize the OIL that will be applied to:
# mcast state after iteration.
new_oil = d_mcast_states[k][i][4]
# Check that entry was not already checked.
if d_mcast_states[k][i] not in mcast_states_to_delete:
# Check if node has OIL (is a forkout point).
if d_mcast_states[k][i][4] != "-":
for j in range(i + 1, len(d_mcast_states[k])):
if d_mcast_states[k][i][0] == \
d_mcast_states[k][j][0] and \
d_mcast_states[k][i][1] == \
d_mcast_states[k][j][1] and \
d_mcast_states[k][i][2] == \
d_mcast_states[k][j][2] and \
d_mcast_states[k][i][3] == \
d_mcast_states[k][j][3]:
# Add duplicate entry to delete list.
mcast_states_to_delete.append(d_mcast_states[k][j])
# If OIL not already in OIL -> merge it.
if d_mcast_states[k][j][4] not in new_oil:
new_oil += ", " + d_mcast_states[k][j][4]
# Finally, assign new OIL to mcast entry.
d_mcast_states[k][i][4] = new_oil
for x in range(len(mcast_states_to_delete)):
if mcast_states_to_delete[x] in d_mcast_states[k]:
d_mcast_states[k].remove(mcast_states_to_delete[x])
# Population of d_ect_path.
for a in d_node:
for b in d_node:
k = len(get_max_possible_path_a_to_b(a, b)) # Get number of hops.
if k in d_ect_path.keys():
if (a + " -> " + b) not in d_ect_path[k]:
d_ect_path[k].append(a + " -> " + b)
else:
pass # Path already exist for this key.
else:
d_ect_path[k] = [a + " -> " + b]
# Main User Menu for getting input from user.
main_menu()
