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
222
223
224
225
226
227
228
229
230
231
232
233
234
235
|
#
# Copyright 2015 IBM Corp.
#
# All Rights Reserved.
# 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 heat.common.i18n import _
from heat.engine import attributes
from heat.engine import constraints
from heat.engine import properties
from heat.engine.resources.openstack.neutron import neutron
from heat.engine import support
class HealthMonitor(neutron.NeutronResource):
"""A resource to handle load balancer health monitors.
This resource creates and manages Neutron LBaaS v2 healthmonitors,
which watches status of the load balanced servers.
"""
support_status = support.SupportStatus(version='6.0.0')
required_service_extension = 'lbaasv2'
entity = 'lbaas_healthmonitor'
res_info_key = 'healthmonitor'
# Properties inputs for the resources create/update.
PROPERTIES = (
ADMIN_STATE_UP, DELAY, EXPECTED_CODES, HTTP_METHOD,
MAX_RETRIES, POOL, TIMEOUT, TYPE, URL_PATH, TENANT_ID
) = (
'admin_state_up', 'delay', 'expected_codes', 'http_method',
'max_retries', 'pool', 'timeout', 'type', 'url_path', 'tenant_id'
)
# Supported HTTP methods
HTTP_METHODS = (
GET, HEAT, POST, PUT, DELETE, TRACE, OPTIONS,
CONNECT, PATCH
) = (
'GET', 'HEAD', 'POST', 'PUT', 'DELETE', 'TRACE', 'OPTIONS',
'CONNECT', 'PATCH'
)
# Supported output attributes of the resources.
ATTRIBUTES = (POOLS_ATTR) = ('pools')
properties_schema = {
ADMIN_STATE_UP: properties.Schema(
properties.Schema.BOOLEAN,
_('The administrative state of the health monitor.'),
default=True,
update_allowed=True
),
DELAY: properties.Schema(
properties.Schema.INTEGER,
_('The minimum time in milliseconds between regular connections '
'of the member.'),
required=True,
update_allowed=True,
constraints=[constraints.Range(min=0)]
),
EXPECTED_CODES: properties.Schema(
properties.Schema.STRING,
_('The HTTP status codes expected in response from the '
'member to declare it healthy. Specify one of the following '
'values: a single value, such as 200. a list, such as 200, 202. '
'a range, such as 200-204.'),
update_allowed=True,
default='200'
),
HTTP_METHOD: properties.Schema(
properties.Schema.STRING,
_('The HTTP method used for requests by the monitor of type '
'HTTP.'),
update_allowed=True,
default=GET,
constraints=[constraints.AllowedValues(HTTP_METHODS)]
),
MAX_RETRIES: properties.Schema(
properties.Schema.INTEGER,
_('Number of permissible connection failures before changing the '
'member status to INACTIVE.'),
required=True,
update_allowed=True,
constraints=[constraints.Range(min=1, max=10)],
),
POOL: properties.Schema(
properties.Schema.STRING,
_('ID or name of the load balancing pool.'),
required=True,
constraints=[
constraints.CustomConstraint('neutron.lbaas.pool')
]
),
TIMEOUT: properties.Schema(
properties.Schema.INTEGER,
_('Maximum number of milliseconds for a monitor to wait for a '
'connection to be established before it times out.'),
required=True,
update_allowed=True,
constraints=[constraints.Range(min=0)]
),
TYPE: properties.Schema(
properties.Schema.STRING,
_('One of predefined health monitor types.'),
required=True,
constraints=[
constraints.AllowedValues(['PING', 'TCP', 'HTTP', 'HTTPS']),
]
),
URL_PATH: properties.Schema(
properties.Schema.STRING,
_('The HTTP path used in the HTTP request used by the monitor to '
'test a member health. A valid value is a string the begins '
'with a forward slash (/).'),
update_allowed=True,
default='/'
),
TENANT_ID: properties.Schema(
properties.Schema.STRING,
_('ID of the tenant who owns the health monitor.')
)
}
attributes_schema = {
POOLS_ATTR: attributes.Schema(
_('The list of Pools related to this monitor.'),
type=attributes.Schema.LIST
)
}
def __init__(self, name, definition, stack):
super(HealthMonitor, self).__init__(name, definition, stack)
self._lb_id = None
@property
def lb_id(self):
if self._lb_id is None:
client_plugin = self.client_plugin()
pool_id = client_plugin.find_resourceid_by_name_or_id(
client_plugin.RES_TYPE_LB_POOL,
self.properties[self.POOL])
pool = self.client().show_lbaas_pool(pool_id)['pool']
listener_id = pool['listeners'][0]['id']
listener = self.client().show_listener(listener_id)['listener']
self._lb_id = listener['loadbalancers'][0]['id']
return self._lb_id
def _check_lb_status(self):
return self.client_plugin().check_lb_status(self.lb_id)
def handle_create(self):
properties = self.prepare_properties(
self.properties,
self.physical_resource_name())
self.client_plugin().resolve_pool(
properties, self.POOL, 'pool_id')
return properties
def check_create_complete(self, properties):
if self.resource_id is None:
try:
healthmonitor = self.client().create_lbaas_healthmonitor(
{'healthmonitor': properties})['healthmonitor']
self.resource_id_set(healthmonitor['id'])
except Exception as ex:
if self.client_plugin().is_invalid(ex):
return False
raise
return self._check_lb_status()
def handle_update(self, json_snippet, tmpl_diff, prop_diff):
self._update_called = False
return prop_diff
def check_update_complete(self, prop_diff):
if not prop_diff:
return True
if not self._update_called:
try:
self.client().update_lbaas_healthmonitor(
self.resource_id, {'healthmonitor': prop_diff})
self._update_called = True
except Exception as ex:
if self.client_plugin().is_invalid(ex):
return False
raise
return self._check_lb_status()
def handle_delete(self):
self._delete_called = False
def check_delete_complete(self, data):
if self.resource_id is None:
return True
if not self._delete_called:
try:
self.client().delete_lbaas_healthmonitor(self.resource_id)
self._delete_called = True
except Exception as ex:
if self.client_plugin().is_invalid(ex):
return False
elif self.client_plugin().is_not_found(ex):
return True
raise
return self._check_lb_status()
def resource_mapping():
return {
'OS::Neutron::LBaaS::HealthMonitor': HealthMonitor,
}
|
