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
|
# Copyright (c) 2017-2018 Wind River Systems, Inc.
#
# 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.
import logging
from django.conf import settings
from django.core.cache import cache
from keystoneauth1.identity import v2 as keystone_v2
from keystoneauth1.identity import v3 as keystone_v3
from keystoneauth1 import session
from newton.pub.msapi import extsys
logger = logging.getLogger(__name__)
class VimDriverUtils(object):
@staticmethod
def get_vim_info(vimid):
"""
Retrieve VIM information.
:param vimid: VIM Identifier
:return: VIM information
"""
# TODO: get vim info from local cache firstly later from ESR
return extsys.get_vim_by_id(vimid)
@staticmethod
def delete_vim_info(vimid):
return extsys.delete_vim_by_id(vimid)
@staticmethod
def get_query_part(request):
query = ""
full_path = request.get_full_path()
if '?' in full_path:
_, query = full_path.split('?')
return query
@staticmethod
def get_session(
vim, tenant_id=None, tenant_name=None, auth_state=None):
"""
get session object and optionally preload auth_state
"""
auth = None
params = {
"auth_url": vim["url"],
"username": vim["userName"],
"password": vim["password"],
}
# tenantid takes precedence over tenantname
if tenant_id:
params["tenant_id"] = tenant_id
else:
# input tenant name takes precedence over the default one
# from AAI data store
params["tenant_name"] = (tenant_name if tenant_name
else vim['tenant'])
if '/v2' in params["auth_url"]:
auth = keystone_v2.Password(**params)
else:
params["user_domain_name"] = vim["domain"]
params["project_domain_name"] = vim["domain"]
if 'tenant_id' in params:
params["project_id"] = params.pop("tenant_id")
if 'tenant_name' in params:
params["project_name"] = params.pop("tenant_name")
if '/v3' not in params["auth_url"]:
params["auth_url"] = params["auth_url"] + "/v3",
auth = keystone_v3.Password(**params)
#preload auth_state which was acquired in last requests
if auth_state:
auth.set_auth_state(auth_state)
return session.Session(auth=auth)
@staticmethod
def get_auth_state(session_obj):
"""
Retrieve the authorization state
:param session: OpenStack Session object
:return: return a string dump of json object with token and
resp_data of authentication request
"""
auth = session_obj._auth_required(None, 'fetch a token')
if auth:
#trigger the authenticate request
session_obj.get_auth_headers(auth)
# norm_expires = utils.normalize_time(auth.expires)
return auth.get_auth_state()
@staticmethod
def get_token_cache(token):
"""
get auth_state and metadata fromm cache
:param token:
:return:
"""
return cache.get(token), cache.get("meta_%s" % token)
@staticmethod
def update_token_cache(token, auth_state, metadata):
"""
Stores into the cache the auth_state and metadata_catalog
information.
:param token: Base token to be used as an identifier
:param auth_state: Authorization information
:param metadata: Metadata Catalog information
"""
if metadata and not cache.get(token):
cache.set(
token, auth_state, settings.CACHE_EXPIRATION_TIME)
cache.set(
"meta_%s" % token, metadata,
settings.CACHE_EXPIRATION_TIME)
@staticmethod
def _replace_a_key(dict_obj, key_pair, reverse):
old_key = key_pair[1] if reverse else key_pair[0]
new_key = key_pair[0] if reverse else key_pair[1]
old_value = dict_obj.pop(old_key, None)
if old_value:
dict_obj[new_key] = old_value
@staticmethod
def replace_key_by_mapping(dict_obj, mapping, reverse=False):
for k in mapping:
VimDriverUtils._replace_a_key(dict_obj, k, reverse)
|