1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
|
# Copyright (C) 2013 Nippon Telegraph and Telephone Corporation.
# Copyright (C) 2013 Isaku Yamahata <yamahata at valinux co jp>
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
# implied.
# See the License for the specific language governing permissions and
# limitations under the License.
from __future__ import print_function
import time
import random
from ryu.base import app_manager
from ryu.lib import hub
from ryu.lib import mac as lib_mac
from ryu.lib.packet import vrrp
from ryu.services.protocols.vrrp import api as vrrp_api
from ryu.services.protocols.vrrp import event as vrrp_event
_VRID = 7
_PRIMARY_IP_ADDRESS0 = '10.0.0.2'
_PRIMARY_IP_ADDRESS1 = '10.0.0.3'
class VRRPCommon(app_manager.RyuApp):
_IFNAME0 = None
_IFNAME1 = None
def __init__(self, *args, **kwargs):
super(VRRPCommon, self).__init__(*args, **kwargs)
def _main(self):
self._main_version(vrrp.VRRP_VERSION_V3)
self._main_version(vrrp.VRRP_VERSION_V2)
print("done!")
def _main_version(self, vrrp_version):
self._main_version_priority(vrrp_version,
vrrp.VRRP_PRIORITY_ADDRESS_OWNER)
self._main_version_priority(vrrp_version,
vrrp.VRRP_PRIORITY_BACKUP_MAX)
self._main_version_priority(vrrp_version,
vrrp.VRRP_PRIORITY_BACKUP_DEFAULT)
self._main_version_priority(vrrp_version,
vrrp.VRRP_PRIORITY_BACKUP_MIN)
def _main_version_priority(self, vrrp_version, priority):
self._main_version_priority_sleep(vrrp_version, priority, False)
self._main_version_priority_sleep(vrrp_version, priority, True)
def _check(self, vrrp_api, instances):
while True:
while True:
rep = vrrp_api.vrrp_list(self)
if len(rep.instance_list) >= len(instances) * 2:
if any(i.state == vrrp_event.VRRP_STATE_INITIALIZE
for i in rep.instance_list):
continue
break
print('%s / %s' % (len(rep.instance_list), len(instances) * 2))
time.sleep(1)
# for i in rep.instance_list:
# print('%s %s %s %s %s' % (i.instance_name,
# i.monitor_name,
# i.config,
# i.interface,
# i.state))
assert len(rep.instance_list) == len(instances) * 2
num_of_master = 0
d = dict(((i.instance_name, i) for i in rep.instance_list))
bad = 0
for i in rep.instance_list:
assert i.state in (vrrp_event.VRRP_STATE_MASTER,
vrrp_event.VRRP_STATE_BACKUP)
if i.state == vrrp_event.VRRP_STATE_MASTER:
num_of_master += 1
vr = instances[i.config.vrid]
if (vr[0].config.priority > vr[1].config.priority and
i.instance_name == vr[1].instance_name) or \
(vr[0].config.priority < vr[1].config.priority and
i.instance_name == vr[0].instance_name):
if i.state == vrrp_event.VRRP_STATE_MASTER:
print("bad master:")
print('%s %s' % (d[vr[0].instance_name].state,
d[vr[0].instance_name].config.priority))
print('%s %s' % (d[vr[1].instance_name].state,
d[vr[1].instance_name].config.priority))
bad += 1
# assert i.state != vrrp_event.VRRP_STATE_MASTER
if bad > 0:
# this could be a transient state
print("%s bad masters" % bad)
time.sleep(1)
continue
if num_of_master >= len(instances):
assert num_of_master == len(instances)
break
print('%s / %s' % (num_of_master, len(instances)))
time.sleep(1)
continue
def _main_version_priority_sleep(self, vrrp_version, priority, do_sleep):
app_mgr = app_manager.AppManager.get_instance()
self.logger.debug('%s', app_mgr.applications)
vrrp_mgr = app_mgr.applications['VRRPManager']
step = 5
instances = {}
for vrid in range(1, 256, step):
if vrid == _VRID:
continue
print("vrid %s" % vrid)
l = {}
prio = max(vrrp.VRRP_PRIORITY_BACKUP_MIN,
min(vrrp.VRRP_PRIORITY_BACKUP_MAX, vrid))
rep0 = self._configure_vrrp_router(vrrp_version,
prio,
_PRIMARY_IP_ADDRESS0,
self._IFNAME0,
vrid)
assert rep0.instance_name is not None
l[0] = rep0
prio = max(vrrp.VRRP_PRIORITY_BACKUP_MIN,
min(vrrp.VRRP_PRIORITY_BACKUP_MAX, 256 - vrid))
rep1 = self._configure_vrrp_router(vrrp_version,
prio,
_PRIMARY_IP_ADDRESS1,
self._IFNAME1,
vrid)
assert rep1.instance_name is not None
l[1] = rep1
instances[vrid] = l
print("vrid %s" % _VRID)
l = {}
rep0 = self._configure_vrrp_router(vrrp_version, priority,
_PRIMARY_IP_ADDRESS0,
self._IFNAME0, _VRID)
assert rep0.instance_name is not None
l[0] = rep0
rep1 = self._configure_vrrp_router(
vrrp_version, vrrp.VRRP_PRIORITY_BACKUP_DEFAULT,
_PRIMARY_IP_ADDRESS1, self._IFNAME1, _VRID)
assert rep1.instance_name is not None
l[1] = rep1
instances[_VRID] = l
self.logger.debug('%s', vrrp_mgr._instances)
if do_sleep:
print("priority %s" % priority)
print("waiting for instances starting")
self._check(vrrp_api, instances)
for vrid in instances.keys():
if vrid == _VRID:
continue
which = vrid & 1
new_priority = int(random.uniform(vrrp.VRRP_PRIORITY_BACKUP_MIN,
vrrp.VRRP_PRIORITY_BACKUP_MAX))
i = instances[vrid][which]
vrrp_api.vrrp_config_change(self, i.instance_name,
priority=new_priority)
i.config.priority = new_priority
if do_sleep:
print("priority shuffled")
self._check(vrrp_api, instances)
for vrid in instances.keys():
if vrid == _VRID:
continue
which = vrid & 1
vrrp_api.vrrp_shutdown(self, instances[vrid][which].instance_name)
vrrp_api.vrrp_shutdown(self, instances[_VRID][0].instance_name)
if do_sleep:
print("shutting down instances")
while True:
rep = vrrp_api.vrrp_list(self)
if len(rep.instance_list) <= len(instances):
break
print("left %s" % len(rep.instance_list))
time.sleep(1)
assert len(rep.instance_list) == len(instances)
print("waiting for the rest becoming master")
while True:
rep = vrrp_api.vrrp_list(self)
if all(i.state == vrrp_event.VRRP_STATE_MASTER
for i in rep.instance_list):
break
time.sleep(1)
vrrp_api.vrrp_shutdown(self, instances[_VRID][1].instance_name)
for vrid in instances.keys():
if vrid == _VRID:
continue
which = 1 - (vrid & 1)
vrrp_api.vrrp_shutdown(self, instances[vrid][which].instance_name)
print("waiting for instances shutting down")
while True:
rep = vrrp_api.vrrp_list(self)
if not rep.instance_list:
break
print("left %s" % len(rep.instance_list))
time.sleep(1)
|
