|
1
|
|
|
"""Module to test the KytosGraph in graph.py.""" |
|
2
|
|
|
from unittest import TestCase |
|
3
|
|
|
|
|
4
|
|
|
from kytos.core.interface import Interface |
|
5
|
|
|
from kytos.core.link import Link |
|
6
|
|
|
from kytos.core.switch import Switch |
|
7
|
|
|
|
|
8
|
|
|
# module under test |
|
9
|
|
|
from graph import KytosGraph |
|
10
|
|
|
|
|
11
|
|
|
|
|
12
|
|
|
class TestResults(TestCase): |
|
13
|
|
|
"""Tests for the graph class.""" |
|
14
|
|
|
|
|
15
|
|
|
def setUp(self): |
|
16
|
|
|
"""Setup for most tests""" |
|
17
|
|
|
switches, links = self.generate_topology() |
|
18
|
|
|
self.graph = KytosGraph() |
|
19
|
|
|
self.graph.clear() |
|
20
|
|
|
self.graph.update_nodes(switches) |
|
21
|
|
|
self.graph.update_links(links) |
|
22
|
|
|
|
|
23
|
|
|
def get_path(self, source, destination): |
|
24
|
|
|
"""Return the shortest path""" |
|
25
|
|
|
results = self.graph.shortest_paths(source, destination) |
|
26
|
|
|
return results |
|
27
|
|
|
|
|
28
|
|
|
def get_path_constrained(self, source, destination, maximum_misses=None, |
|
29
|
|
|
**metrics): |
|
30
|
|
|
"""Return the constrained shortest path""" |
|
31
|
|
|
return self.graph.constrained_flexible_paths(source, destination, |
|
32
|
|
|
maximum_misses, |
|
33
|
|
|
**metrics) |
|
34
|
|
|
|
|
35
|
|
|
@staticmethod |
|
36
|
|
|
def generate_topology(): |
|
37
|
|
|
"""Generates a predetermined topology""" |
|
38
|
|
|
switches = {} |
|
39
|
|
|
links = {} |
|
40
|
|
|
return (switches, links) |
|
41
|
|
|
|
|
42
|
|
|
@ staticmethod |
|
43
|
|
|
def create_switch(name, switches): |
|
44
|
|
|
'''Add a new switch to the list of switches''' |
|
45
|
|
|
switches[name] = Switch(name) |
|
46
|
|
|
|
|
47
|
|
|
@ staticmethod |
|
48
|
|
|
def add_interfaces(count, switch, interfaces): |
|
49
|
|
|
'''Add a new interface to the list of interfaces''' |
|
50
|
|
|
for i in range(1, count + 1): |
|
51
|
|
|
str1 = "{}:{}".format(switch.dpid, i) |
|
52
|
|
|
interface = Interface(str1, i, switch) |
|
53
|
|
|
interfaces[str1] = interface |
|
54
|
|
|
switch.update_interface(interface) |
|
55
|
|
|
|
|
56
|
|
|
@ staticmethod |
|
57
|
|
|
def create_link(interface_a, interface_b, interfaces, links): |
|
58
|
|
|
'''Add a new link between two interfaces into the list of links''' |
|
59
|
|
|
compounded = "{}|{}".format(interface_a, interface_b) |
|
60
|
|
|
final_name = compounded |
|
61
|
|
|
links[final_name] = Link( |
|
62
|
|
|
interfaces[interface_a], interfaces[interface_b]) |
|
63
|
|
|
|
|
64
|
|
|
@ staticmethod |
|
65
|
|
|
def add_metadata_to_link(interface_a, interface_b, metrics, links): |
|
66
|
|
|
'''Add metadata to an existing link in the list of links''' |
|
67
|
|
|
compounded = "{}|{}".format(interface_a, interface_b) |
|
68
|
|
|
links[compounded].extend_metadata(metrics) |
|
69
|
|
|
|
kytos /
pathfinder
