|
1
|
|
|
"""Main module of kytos/maintenance Kytos Network Application. |
|
2
|
|
|
|
|
3
|
|
|
This NApp creates maintenance windows, allowing the maintenance of network |
|
4
|
|
|
devices (switch, link, and interface) without receiving alerts. |
|
5
|
|
|
""" |
|
6
|
1 |
|
from datetime import timedelta |
|
7
|
|
|
|
|
8
|
1 |
|
from flask import current_app, jsonify, request |
|
9
|
1 |
|
from napps.kytos.maintenance.models import MaintenanceID |
|
10
|
1 |
|
from napps.kytos.maintenance.models import MaintenanceWindow as MW |
|
11
|
1 |
|
from napps.kytos.maintenance.models import OverlapError, Scheduler, Status |
|
12
|
1 |
|
from pydantic import ValidationError |
|
13
|
|
|
from werkzeug.exceptions import BadRequest, NotFound, UnsupportedMediaType |
|
14
|
1 |
|
|
|
15
|
|
|
from kytos.core import KytosNApp, rest |
|
16
|
|
|
|
|
17
|
1 |
|
|
|
18
|
|
|
class Main(KytosNApp): |
|
19
|
|
|
"""Main class of kytos/maintenance NApp. |
|
20
|
|
|
|
|
21
|
|
|
This class is the entry point for this napp. |
|
22
|
|
|
""" |
|
23
|
1 |
|
|
|
24
|
|
|
def setup(self): |
|
25
|
|
|
"""Replace the '__init__' method for the KytosNApp subclass. |
|
26
|
|
|
|
|
27
|
|
|
The setup method is automatically called by the controller when your |
|
28
|
|
|
application is loaded. |
|
29
|
|
|
|
|
30
|
|
|
So, if you have any setup routine, insert it here. |
|
31
|
1 |
|
""" |
|
32
|
1 |
|
self.scheduler = Scheduler.new_scheduler(self.controller) |
|
33
|
|
|
self.scheduler.start() |
|
34
|
1 |
|
|
|
35
|
|
|
def execute(self): |
|
36
|
|
|
"""Run after the setup method execution. |
|
37
|
|
|
|
|
38
|
|
|
You can also use this method in loop mode if you add to the above setup |
|
39
|
|
|
method a line like the following example: |
|
40
|
|
|
|
|
41
|
|
|
self.execute_as_loop(30) # 30-second interval. |
|
42
|
|
|
""" |
|
43
|
1 |
|
|
|
44
|
|
|
def shutdown(self): |
|
45
|
|
|
"""Run when your napp is unloaded. |
|
46
|
|
|
|
|
47
|
|
|
If you have some cleanup procedure, insert it here. |
|
48
|
|
|
""" |
|
49
|
1 |
|
self.scheduler.shutdown() |
|
50
|
1 |
|
|
|
51
|
1 |
|
@rest('/v1', methods=['GET']) |
|
52
|
|
|
def get_all_mw(self): |
|
53
|
1 |
|
"""Return all maintenance windows.""" |
|
54
|
1 |
|
maintenances = self.scheduler.list_maintenances() |
|
55
|
|
|
return current_app.response_class( |
|
56
|
|
|
f"{maintenances.json()}\n", |
|
57
|
1 |
|
mimetype=current_app.config["JSONIFY_MIMETYPE"], |
|
58
|
1 |
|
), 200 |
|
59
|
1 |
|
|
|
60
|
1 |
|
@rest('/v1/<mw_id>', methods=['GET']) |
|
61
|
|
|
def get_mw(self, mw_id: MaintenanceID): |
|
62
|
1 |
|
"""Return one maintenance window.""" |
|
63
|
1 |
|
window = self.scheduler.get_maintenance(mw_id) |
|
64
|
|
|
if window: |
|
65
|
1 |
|
return current_app.response_class( |
|
66
|
1 |
|
f"{window.json()}\n", |
|
67
|
1 |
|
mimetype=current_app.config["JSONIFY_MIMETYPE"], |
|
68
|
|
|
), 200 |
|
69
|
1 |
|
raise NotFound(f'Maintenance with id {mw_id} not found') |
|
70
|
1 |
|
|
|
71
|
|
|
@rest('/v1', methods=['POST']) |
|
72
|
|
|
def create_mw(self): |
|
73
|
1 |
|
"""Create a new maintenance window.""" |
|
74
|
1 |
|
data: dict = request.get_json() |
|
75
|
1 |
|
if not data: |
|
76
|
1 |
|
raise UnsupportedMediaType('The request does not have a json') |
|
77
|
1 |
|
try: |
|
78
|
1 |
|
maintenance = MW.parse_obj(data) |
|
79
|
1 |
|
force = data.get('force', False) |
|
80
|
1 |
|
except ValidationError as err: |
|
81
|
1 |
|
raise BadRequest(f'{err.errors()[0]["msg"]}') from err |
|
82
|
|
|
try: |
|
83
|
1 |
|
self.scheduler.add(maintenance, force=force) |
|
84
|
1 |
|
except OverlapError as err: |
|
85
|
|
|
raise BadRequest(f'{err}') from err |
|
86
|
1 |
|
return jsonify({'mw_id': maintenance.id}), 201 |
|
87
|
1 |
|
|
|
88
|
1 |
|
@rest('/v1/<mw_id>', methods=['PATCH']) |
|
89
|
1 |
|
def update_mw(self, mw_id: MaintenanceID): |
|
90
|
1 |
|
"""Update a maintenance window.""" |
|
91
|
1 |
|
data = request.get_json() |
|
92
|
1 |
|
if not data: |
|
93
|
1 |
|
raise UnsupportedMediaType('The request does not have a json') |
|
94
|
|
|
old_maintenance = self.scheduler.get_maintenance(mw_id) |
|
95
|
1 |
|
if old_maintenance is None: |
|
96
|
1 |
|
raise NotFound(f'Maintenance with id {mw_id} not found') |
|
97
|
1 |
|
if old_maintenance.status == Status.RUNNING: |
|
98
|
1 |
|
raise BadRequest('Updating a running maintenance is not allowed') |
|
99
|
1 |
|
try: |
|
100
|
1 |
|
new_maintenance = MW.parse_obj({**old_maintenance.dict(), **data}) |
|
101
|
1 |
|
except ValidationError as err: |
|
102
|
|
|
raise BadRequest(f'{err.errors()[0]["msg"]}') from err |
|
103
|
1 |
|
if new_maintenance.id != old_maintenance.id: |
|
104
|
1 |
|
raise BadRequest('Updated id must match old id') |
|
105
|
|
|
self.scheduler.update(new_maintenance) |
|
106
|
1 |
|
return jsonify({'response': f'Maintenance {mw_id} updated'}), 200 |
|
107
|
1 |
|
|
|
108
|
1 |
|
@rest('/v1/<mw_id>', methods=['DELETE']) |
|
109
|
1 |
|
def remove_mw(self, mw_id: MaintenanceID): |
|
110
|
1 |
|
"""Delete a maintenance window.""" |
|
111
|
1 |
|
maintenance = self.scheduler.get_maintenance(mw_id) |
|
112
|
1 |
|
if maintenance is None: |
|
113
|
1 |
|
raise NotFound(f'Maintenance with id {mw_id} not found') |
|
114
|
1 |
|
if maintenance.status == Status.RUNNING: |
|
115
|
|
|
raise BadRequest('Deleting a running maintenance is not allowed') |
|
116
|
|
|
self.scheduler.remove(mw_id) |
|
117
|
1 |
|
return jsonify({'response': f'Maintenance with id {mw_id} ' |
|
118
|
1 |
|
f'successfully removed'}), 200 |
|
119
|
|
|
|
|
120
|
1 |
|
@rest('/v1/<mw_id>/end', methods=['PATCH']) |
|
121
|
1 |
|
def end_mw(self, mw_id: MaintenanceID): |
|
122
|
1 |
|
"""Finish a maintenance window right now.""" |
|
123
|
1 |
|
maintenance = self.scheduler.get_maintenance(mw_id) |
|
124
|
1 |
|
if maintenance is None: |
|
125
|
1 |
|
raise NotFound(f'Maintenance with id {mw_id} not found') |
|
126
|
1 |
|
if maintenance.status == Status.PENDING: |
|
127
|
|
|
raise BadRequest( |
|
128
|
1 |
|
f'Maintenance window {mw_id} has not yet started' |
|
129
|
1 |
|
) |
|
130
|
|
|
if maintenance.status == Status.FINISHED: |
|
131
|
1 |
|
raise BadRequest( |
|
132
|
1 |
|
f'Maintenance window {mw_id} has already finished' |
|
133
|
1 |
|
) |
|
134
|
|
|
self.scheduler.end_maintenance_early(mw_id) |
|
135
|
|
|
return jsonify({'response': f'Maintenance window {mw_id} ' |
|
136
|
1 |
|
f'finished'}), 200 |
|
137
|
1 |
|
|
|
138
|
|
|
@rest('/v1/<mw_id>/extend', methods=['PATCH']) |
|
139
|
1 |
|
def extend_mw(self, mw_id): |
|
140
|
1 |
|
"""Extend a running maintenance window.""" |
|
141
|
1 |
|
data = request.get_json() |
|
142
|
1 |
|
if not data: |
|
143
|
1 |
|
raise UnsupportedMediaType('The request does not have a json') |
|
144
|
1 |
|
maintenance = self.scheduler.get_maintenance(mw_id) |
|
145
|
1 |
|
if maintenance is None: |
|
146
|
1 |
|
raise NotFound(f'Maintenance with id {mw_id} not found') |
|
147
|
1 |
|
if 'minutes' not in data: |
|
148
|
1 |
|
raise BadRequest('Minutes of extension must be sent') |
|
149
|
1 |
|
if maintenance.status == Status.PENDING: |
|
150
|
1 |
|
raise BadRequest( |
|
151
|
|
|
f'Maintenance window {mw_id} has not yet started' |
|
152
|
1 |
|
) |
|
153
|
1 |
|
if maintenance.status == Status.FINISHED: |
|
154
|
|
|
raise BadRequest( |
|
155
|
1 |
|
f'Maintenance window {mw_id} has already finished' |
|
156
|
1 |
|
) |
|
157
|
|
|
try: |
|
158
|
1 |
|
maintenance_end = maintenance.end + \ |
|
159
|
1 |
|
timedelta(minutes=data['minutes']) |
|
160
|
1 |
|
new_maintenance = maintenance.copy( |
|
161
|
1 |
|
update={'end': maintenance_end} |
|
162
|
1 |
|
) |
|
163
|
|
|
except TypeError as exc: |
|
164
|
|
|
raise BadRequest('Minutes of extension must be integer') from exc |
|
165
|
|
|
|
|
166
|
|
|
self.scheduler.update(new_maintenance) |
|
167
|
|
|
return jsonify({'response': f'Maintenance {mw_id} extended'}), 200 |
|
168
|
|
|
|
kytos-ng /
maintenance
