/
clients.py
249 lines (205 loc) · 7.86 KB
/
clients.py
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
236
237
238
239
240
241
242
243
244
245
246
247
248
249
# vim: tabstop=4 shiftwidth=4 softtabstop=4
#
# 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 oslo.config import cfg
from heat.openstack.common import importutils
from heat.openstack.common import log as logging
logger = logging.getLogger(__name__)
from heat.common import heat_keystoneclient as hkc
from novaclient import client as novaclient
from novaclient import shell as novashell
try:
from swiftclient import client as swiftclient
except ImportError:
swiftclient = None
logger.info('swiftclient not available')
try:
from neutronclient.v2_0 import client as neutronclient
except ImportError:
neutronclient = None
logger.info('neutronclient not available')
try:
from cinderclient import client as cinderclient
except ImportError:
cinderclient = None
logger.info('cinderclient not available')
try:
from ceilometerclient.v2 import client as ceilometerclient
except ImportError:
ceilometerclient = None
logger.info('ceilometerclient not available')
_default_backend = "heat.engine.clients.OpenStackClients"
cloud_opts = [
cfg.StrOpt('cloud_backend',
default=_default_backend,
help="Fully qualified class name to use as a client backend.")
]
cfg.CONF.register_opts(cloud_opts)
class OpenStackClients(object):
'''
Convenience class to create and cache client instances.
'''
def __init__(self, context):
self.context = context
self._nova = {}
self._keystone = None
self._swift = None
self._neutron = None
self._cinder = None
self._ceilometer = None
@property
def auth_token(self):
# if there is no auth token in the context
# attempt to get one using the context username and password
return self.context.auth_token or self.keystone().auth_token
def keystone(self):
if self._keystone:
return self._keystone
self._keystone = hkc.KeystoneClient(self.context)
return self._keystone
def url_for(self, **kwargs):
return self.keystone().url_for(**kwargs)
def nova(self, service_type='compute'):
if service_type in self._nova:
return self._nova[service_type]
con = self.context
if self.auth_token is None:
logger.error("Nova connection failed, no auth_token!")
return None
computeshell = novashell.OpenStackComputeShell()
extensions = computeshell._discover_extensions("1.1")
args = {
'project_id': con.tenant,
'auth_url': con.auth_url,
'service_type': service_type,
'username': None,
'api_key': None,
'extensions': extensions,
'cacert': self._get_client_option('nova', 'ca_file'),
'insecure': self._get_client_option('nova', 'insecure')
}
client = novaclient.Client(1.1, **args)
management_url = self.url_for(service_type=service_type)
client.client.auth_token = self.auth_token
client.client.management_url = management_url
self._nova[service_type] = client
return client
def swift(self):
if swiftclient is None:
return None
if self._swift:
return self._swift
con = self.context
if self.auth_token is None:
logger.error("Swift connection failed, no auth_token!")
return None
args = {
'auth_version': '2.0',
'tenant_name': con.tenant,
'user': con.username,
'key': None,
'authurl': None,
'preauthtoken': self.auth_token,
'preauthurl': self.url_for(service_type='object-store'),
'cacert': self._get_client_option('swift', 'ca_file'),
'insecure': self._get_client_option('swift', 'insecure')
}
self._swift = swiftclient.Connection(**args)
return self._swift
def neutron(self):
if neutronclient is None:
return None
if self._neutron:
return self._neutron
con = self.context
if self.auth_token is None:
logger.error("Neutron connection failed, no auth_token!")
return None
args = {
'auth_url': con.auth_url,
'service_type': 'network',
'token': self.auth_token,
'endpoint_url': self.url_for(service_type='network'),
'ca_cert': self._get_client_option('neutron', 'ca_file'),
'insecure': self._get_client_option('neutron', 'insecure')
}
self._neutron = neutronclient.Client(**args)
return self._neutron
def cinder(self):
if cinderclient is None:
return self.nova('volume')
if self._cinder:
return self._cinder
con = self.context
if self.auth_token is None:
logger.error("Cinder connection failed, no auth_token!")
return None
args = {
'service_type': 'volume',
'auth_url': con.auth_url,
'project_id': con.tenant,
'username': None,
'api_key': None,
'cacert': self._get_client_option('cinder', 'ca_file'),
'insecure': self._get_client_option('cinder', 'insecure')
}
self._cinder = cinderclient.Client('1', **args)
management_url = self.url_for(service_type='volume')
self._cinder.client.auth_token = self.auth_token
self._cinder.client.management_url = management_url
return self._cinder
def ceilometer(self):
if ceilometerclient is None:
return None
if self._ceilometer:
return self._ceilometer
if self.auth_token is None:
logger.error("Ceilometer connection failed, no auth_token!")
return None
con = self.context
args = {
'auth_url': con.auth_url,
'service_type': 'metering',
'project_id': con.tenant,
'token': lambda: self.auth_token,
'endpoint': self.url_for(service_type='metering'),
'ca_file': self._get_client_option('ceilometer', 'ca_file'),
'cert_file': self._get_client_option('ceilometer', 'cert_file'),
'key_file': self._get_client_option('ceilometer', 'key_file'),
'insecure': self._get_client_option('ceilometer', 'insecure')
}
client = ceilometerclient.Client(**args)
self._ceilometer = client
return self._ceilometer
def _get_client_option(self, client, option):
try:
group_name = 'clients_' + client
cfg.CONF.import_opt(option, 'heat.common.config',
group=group_name)
return getattr(getattr(cfg.CONF, group_name), option)
except (cfg.NoSuchGroupError, cfg.NoSuchOptError):
cfg.CONF.import_opt(option, 'heat.common.config', group='clients')
return getattr(cfg.CONF.clients, option)
class ClientBackend(object):
'''Delay choosing the backend client module until the client's class needs
to be initialized.
'''
def __new__(cls, context):
if cfg.CONF.cloud_backend == _default_backend:
return OpenStackClients(context)
else:
return importutils.import_object(
cfg.CONF.cloud_backend,
context
)
Clients = ClientBackend