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
|
# Copyright 2014 IBM Corp.
#
# 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 uuid
import sqlalchemy
from keystone.common import sql
from keystone import exception
class PolicyAssociation(sql.ModelBase, sql.ModelDictMixin):
__tablename__ = 'policy_association'
attributes = ['policy_id', 'endpoint_id', 'region_id', 'service_id']
# The id column is never exposed outside this module. It only exists to
# provide a primary key, given that the real columns we would like to use
# (endpoint_id, service_id, region_id) can be null
id = sql.Column(sql.String(64), primary_key=True)
policy_id = sql.Column(sql.String(64), nullable=False)
endpoint_id = sql.Column(sql.String(64), nullable=True)
service_id = sql.Column(sql.String(64), nullable=True)
region_id = sql.Column(sql.String(64), nullable=True)
__table_args__ = (sql.UniqueConstraint('endpoint_id', 'service_id',
'region_id'), {})
def to_dict(self):
"""Returns the model's attributes as a dictionary.
We override the standard method in order to hide the id column,
since this only exists to provide the table with a primary key.
"""
d = {}
for attr in self.__class__.attributes:
d[attr] = getattr(self, attr)
return d
class EndpointPolicy(object):
def create_policy_association(self, policy_id, endpoint_id=None,
service_id=None, region_id=None):
with sql.transaction() as session:
try:
# See if there is already a row for this association, and if
# so, update it with the new policy_id
query = session.query(PolicyAssociation)
query = query.filter_by(endpoint_id=endpoint_id)
query = query.filter_by(service_id=service_id)
query = query.filter_by(region_id=region_id)
association = query.one()
association.policy_id = policy_id
except sql.NotFound:
association = PolicyAssociation(id=uuid.uuid4().hex,
policy_id=policy_id,
endpoint_id=endpoint_id,
service_id=service_id,
region_id=region_id)
session.add(association)
def check_policy_association(self, policy_id, endpoint_id=None,
service_id=None, region_id=None):
sql_constraints = sqlalchemy.and_(
PolicyAssociation.policy_id == policy_id,
PolicyAssociation.endpoint_id == endpoint_id,
PolicyAssociation.service_id == service_id,
PolicyAssociation.region_id == region_id)
# NOTE(henry-nash): Getting a single value to save object
# management overhead.
with sql.transaction() as session:
if session.query(PolicyAssociation.id).filter(
sql_constraints).distinct().count() == 0:
raise exception.PolicyAssociationNotFound()
def delete_policy_association(self, policy_id, endpoint_id=None,
service_id=None, region_id=None):
with sql.transaction() as session:
query = session.query(PolicyAssociation)
query = query.filter_by(policy_id=policy_id)
query = query.filter_by(endpoint_id=endpoint_id)
query = query.filter_by(service_id=service_id)
query = query.filter_by(region_id=region_id)
query.delete()
def get_policy_association(self, endpoint_id=None,
service_id=None, region_id=None):
sql_constraints = sqlalchemy.and_(
PolicyAssociation.endpoint_id == endpoint_id,
PolicyAssociation.service_id == service_id,
PolicyAssociation.region_id == region_id)
try:
with sql.transaction() as session:
policy_id = session.query(PolicyAssociation.policy_id).filter(
sql_constraints).distinct().one()
return {'policy_id': policy_id}
except sql.NotFound:
raise exception.PolicyAssociationNotFound()
def list_associations_for_policy(self, policy_id):
with sql.transaction() as session:
query = session.query(PolicyAssociation)
query = query.filter_by(policy_id=policy_id)
return [ref.to_dict() for ref in query.all()]
def delete_association_by_endpoint(self, endpoint_id):
with sql.transaction() as session:
query = session.query(PolicyAssociation)
query = query.filter_by(endpoint_id=endpoint_id)
query.delete()
def delete_association_by_service(self, service_id):
with sql.transaction() as session:
query = session.query(PolicyAssociation)
query = query.filter_by(service_id=service_id)
query.delete()
def delete_association_by_region(self, region_id):
with sql.transaction() as session:
query = session.query(PolicyAssociation)
query = query.filter_by(region_id=region_id)
query.delete()
def delete_association_by_policy(self, policy_id):
with sql.transaction() as session:
query = session.query(PolicyAssociation)
query = query.filter_by(policy_id=policy_id)
query.delete()
|
