|
1
|
|
|
""" Support function for main.py """ |
|
2
|
|
|
|
|
3
|
1 |
|
from napps.kytos.telemetry_int import settings |
|
4
|
|
|
|
|
5
|
1 |
|
from kytos.core import Controller |
|
6
|
|
|
|
|
7
|
1 |
|
from .exceptions import FlowsNotFound, PriorityOverflow, ProxyPortNotFound |
|
8
|
1 |
|
from .kytos_api_helper import get_evcs |
|
9
|
1 |
|
from .kytos_api_helper import get_stored_flows as _get_stored_flows |
|
10
|
1 |
|
from .proxy_port import ProxyPort |
|
11
|
|
|
|
|
12
|
|
|
|
|
13
|
1 |
|
async def get_found_stored_flows(cookies: list[int] = None) -> dict[int, list[dict]]: |
|
14
|
|
|
"""Get stored flows ensuring that flows are found.""" |
|
15
|
|
|
cookies = cookies or [] |
|
16
|
|
|
stored_flows = await _get_stored_flows() |
|
17
|
|
|
for cookie, flows in stored_flows.items(): |
|
18
|
|
|
if not flows: |
|
19
|
|
|
raise FlowsNotFound(get_id_from_cookie(cookie)) |
|
20
|
|
|
return stored_flows |
|
21
|
|
|
|
|
22
|
|
|
|
|
23
|
1 |
|
def get_evc_with_telemetry() -> dict: |
|
24
|
|
|
"""Retrieve the list of EVC IDs and list those with |
|
25
|
|
|
metadata {"telemetry": {"enabled": true}}""" |
|
26
|
|
|
|
|
27
|
|
|
evc_ids = {"evcs_with_telemetry": []} |
|
28
|
|
|
for evc in get_evcs().values(): |
|
29
|
|
|
if has_int_enabled(evc): |
|
30
|
|
|
evc_ids["evcs_with_telemetry"].append(evc["id"]) |
|
31
|
|
|
return evc_ids |
|
32
|
|
|
|
|
33
|
|
|
|
|
34
|
1 |
|
def has_int_enabled(evc: dict) -> bool: |
|
35
|
|
|
"""Check if evc has telemetry.""" |
|
36
|
1 |
|
return ( |
|
37
|
|
|
"telemetry" in evc["metadata"] |
|
38
|
|
|
and isinstance(evc["metadata"]["telemetry"], dict) |
|
39
|
|
|
and "enabled" in evc["metadata"]["telemetry"] |
|
40
|
|
|
and evc["metadata"]["telemetry"]["enabled"] |
|
41
|
|
|
) |
|
42
|
|
|
|
|
43
|
|
|
|
|
44
|
1 |
|
def get_evc_unis(evc: dict) -> tuple[dict, dict]: |
|
45
|
|
|
"""Parse evc for unis.""" |
|
46
|
1 |
|
uni_a_split = evc["uni_a"]["interface_id"].split(":") |
|
47
|
1 |
|
uni_z_split = evc["uni_z"]["interface_id"].split(":") |
|
48
|
1 |
|
return ( |
|
49
|
|
|
{ |
|
50
|
|
|
"interface_id": evc["uni_a"]["interface_id"], |
|
51
|
|
|
"tag": evc["uni_a"].get("tag", {}), |
|
52
|
|
|
"port_number": int(uni_a_split[-1]), |
|
53
|
|
|
"switch": ":".join(uni_a_split[:-1]), |
|
54
|
|
|
}, |
|
55
|
|
|
{ |
|
56
|
|
|
"interface_id": evc["uni_z"]["interface_id"], |
|
57
|
|
|
"tag": evc["uni_z"].get("tag", {}), |
|
58
|
|
|
"port_number": int(uni_z_split[-1]), |
|
59
|
|
|
"switch": ":".join(uni_z_split[:-1]), |
|
60
|
|
|
}, |
|
61
|
|
|
) |
|
62
|
|
|
|
|
63
|
|
|
|
|
64
|
1 |
|
def get_proxy_port_or_raise( |
|
65
|
|
|
controller: Controller, intf_id: str, evc_id: str |
|
66
|
|
|
) -> ProxyPort: |
|
67
|
|
|
"""Return a ProxyPort assigned to a UNI or raise.""" |
|
68
|
|
|
|
|
69
|
|
|
interface = controller.get_interface_by_id(intf_id) |
|
70
|
|
|
if not interface: |
|
71
|
|
|
raise ProxyPortNotFound(evc_id, f"UNI interface {intf_id} not found") |
|
72
|
|
|
|
|
73
|
|
|
if "proxy_port" not in interface.metadata: |
|
74
|
|
|
raise ProxyPortNotFound(evc_id, f"proxy_port metadata not found in {intf_id}") |
|
75
|
|
|
|
|
76
|
|
|
source_intf = interface.switch.get_interface_by_port_no( |
|
77
|
|
|
interface.metadata.get("proxy_port") |
|
78
|
|
|
) |
|
79
|
|
|
if not source_intf: |
|
80
|
|
|
raise ProxyPortNotFound( |
|
81
|
|
|
evc_id, |
|
82
|
|
|
f"proxy_port of {intf_id} source interface not found", |
|
83
|
|
|
) |
|
84
|
|
|
|
|
85
|
|
|
pp = ProxyPort(controller, source_intf) |
|
86
|
|
|
|
|
87
|
|
|
if not pp.destination: |
|
88
|
|
|
raise ProxyPortNotFound( |
|
89
|
|
|
evc_id, |
|
90
|
|
|
f"proxy_port of {intf_id} destination interface not found", |
|
91
|
|
|
) |
|
92
|
|
|
return pp |
|
93
|
|
|
|
|
94
|
|
|
|
|
95
|
1 |
|
def add_to_apply_actions(instructions, new_instruction, position): |
|
96
|
|
|
"""Create the actions list""" |
|
97
|
|
|
for instruction in instructions: |
|
98
|
|
|
if instruction["instruction_type"] == "apply_actions": |
|
99
|
|
|
instruction["actions"].insert(position, new_instruction) |
|
100
|
|
|
return instructions |
|
101
|
|
|
|
|
102
|
|
|
|
|
103
|
1 |
|
def get_cookie(evc_id: str, cookie_prefix: int) -> int: |
|
104
|
|
|
"""Return the cookie integer from evc id. |
|
105
|
|
|
|
|
106
|
|
|
cookie_prefix is supposed to be the reserved byte value that |
|
107
|
|
|
mef_eline or telemetry_int uses. |
|
108
|
|
|
""" |
|
109
|
|
|
return int(evc_id, 16) + (cookie_prefix << 56) |
|
110
|
|
|
|
|
111
|
|
|
|
|
112
|
1 |
|
def get_id_from_cookie(cookie: int) -> str: |
|
113
|
|
|
"""Return the evc id given a cookie value.""" |
|
114
|
1 |
|
evc_id = cookie & 0xFFFFFFFFFFFFFF |
|
115
|
1 |
|
return f"{evc_id:x}" |
|
116
|
|
|
|
|
117
|
|
|
|
|
118
|
1 |
|
def is_intra_switch_evc(evc): |
|
119
|
|
|
"""Returns if EVC is intra-switch (two UNIs on the same switch)""" |
|
120
|
1 |
|
uni_a, uni_z = get_evc_unis(evc) |
|
121
|
1 |
|
if uni_a["switch"] == uni_z["switch"]: |
|
122
|
1 |
|
return True |
|
123
|
1 |
|
return False |
|
124
|
|
|
|
|
125
|
|
|
|
|
126
|
1 |
|
def modify_actions(actions, actions_to_change, remove=True): |
|
127
|
|
|
"""Change the current actions |
|
128
|
|
|
If remove == True, remove actions_to_change from actions. |
|
129
|
|
|
If remove == False, keep actions_to_change, remove everything else |
|
130
|
|
|
Args: |
|
131
|
|
|
actions = current list of actions on a flow |
|
132
|
|
|
actions_to_change = list of actions as strings |
|
133
|
|
|
remove = boolean |
|
134
|
|
|
Return |
|
135
|
|
|
actions |
|
136
|
|
|
""" |
|
137
|
|
|
indexes = [] |
|
138
|
|
|
count = 0 |
|
139
|
|
|
|
|
140
|
|
|
for action in actions: |
|
141
|
|
|
if remove: |
|
142
|
|
|
if action["action_type"] in actions_to_change: |
|
143
|
|
|
indexes.append(count) |
|
144
|
|
|
else: |
|
145
|
|
|
if action["action_type"] not in actions_to_change: |
|
146
|
|
|
indexes.append(count) |
|
147
|
|
|
count += 1 |
|
148
|
|
|
|
|
149
|
|
|
for index in sorted(indexes, reverse=True): |
|
150
|
|
|
del actions[index] |
|
151
|
|
|
return actions |
|
152
|
|
|
|
|
153
|
|
|
|
|
154
|
1 |
|
def set_priority(flow: dict, evc_id: str = "") -> dict: |
|
155
|
|
|
"""Find a suitable priority number. EP031 describes 100 as the addition.""" |
|
156
|
|
|
if flow["flow"]["priority"] + 100 < (2**16 - 2): |
|
157
|
|
|
flow["flow"]["priority"] += 100 |
|
158
|
|
|
elif flow["flow"]["priority"] + 1 < (2**16 - 2): |
|
159
|
|
|
flow["flow"]["priority"] += 1 |
|
160
|
|
|
else: |
|
161
|
|
|
raise PriorityOverflow(evc_id, f"Flow {flow} would overflow max priority") |
|
162
|
|
|
return flow |
|
163
|
|
|
|
|
164
|
|
|
|
|
165
|
1 |
|
def set_owner(flow: dict) -> dict: |
|
166
|
|
|
"""Set flow owner.""" |
|
167
|
|
|
flow["flow"]["owner"] = "telemetry_int" |
|
168
|
|
|
return flow |
|
169
|
|
|
|
|
170
|
|
|
|
|
171
|
1 |
|
def set_table_group(flow: dict, table_group="base") -> dict: |
|
172
|
|
|
"""Set flow owner.""" |
|
173
|
|
|
flow["flow"]["table_group"] = table_group |
|
174
|
|
|
return flow |
|
175
|
|
|
|
|
176
|
|
|
|
|
177
|
1 |
|
def get_new_cookie(cookie: int, cookie_prefix=settings.INT_COOKIE_PREFIX) -> int: |
|
178
|
|
|
"""Convert from mef-eline cookie by replacing the most significant byte.""" |
|
179
|
1 |
|
return (cookie & 0xFFFFFFFFFFFFFF) + (cookie_prefix << 56) |
|
180
|
|
|
|
|
181
|
|
|
|
|
182
|
1 |
|
def set_new_cookie(flow: dict) -> dict: |
|
183
|
|
|
"""Set new cookie.""" |
|
184
|
1 |
|
flow["flow"]["cookie"] = get_new_cookie( |
|
185
|
|
|
flow["flow"]["cookie"], cookie_prefix=settings.INT_COOKIE_PREFIX |
|
186
|
|
|
) |
|
187
|
1 |
|
return flow |
|
188
|
|
|
|
|
189
|
|
|
|
|
190
|
1 |
|
def set_instructions_from_actions(flow: dict) -> dict: |
|
191
|
|
|
"""Get intructions or convert from actions.""" |
|
192
|
1 |
|
if "instructions" in flow["flow"]: |
|
193
|
1 |
|
return flow |
|
194
|
|
|
|
|
195
|
1 |
|
instructions = [ |
|
196
|
|
|
{ |
|
197
|
|
|
"instruction_type": "apply_actions", |
|
198
|
|
|
"actions": flow["flow"].get("actions", []), |
|
199
|
|
|
} |
|
200
|
|
|
] |
|
201
|
1 |
|
flow["flow"].pop("actions", None) |
|
202
|
1 |
|
flow["flow"]["instructions"] = instructions |
|
203
|
|
|
return flow |
|
204
|
|
|
|
kytos-ng /
telemetry_int
