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
|
# Copyright 2012 OpenStack Foundation
#
# 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.
"""Main entry point into the Policy service."""
import abc
from oslo_config import cfg
import six
from keystone.common import dependency
from keystone.common import manager
from keystone import exception
from keystone import notifications
CONF = cfg.CONF
@dependency.provider('policy_api')
class Manager(manager.Manager):
"""Default pivot point for the Policy backend.
See :mod:`keystone.common.manager.Manager` for more details on how this
dynamically calls the backend.
"""
_POLICY = 'policy'
def __init__(self):
super(Manager, self).__init__(CONF.policy.driver)
def create_policy(self, policy_id, policy, initiator=None):
ref = self.driver.create_policy(policy_id, policy)
notifications.Audit.created(self._POLICY, policy_id, initiator)
return ref
def get_policy(self, policy_id):
try:
return self.driver.get_policy(policy_id)
except exception.NotFound:
raise exception.PolicyNotFound(policy_id=policy_id)
def update_policy(self, policy_id, policy, initiator=None):
if 'id' in policy and policy_id != policy['id']:
raise exception.ValidationError('Cannot change policy ID')
try:
ref = self.driver.update_policy(policy_id, policy)
except exception.NotFound:
raise exception.PolicyNotFound(policy_id=policy_id)
notifications.Audit.updated(self._POLICY, policy_id, initiator)
return ref
@manager.response_truncated
def list_policies(self, hints=None):
# NOTE(henry-nash): Since the advantage of filtering or list limiting
# of policies at the driver level is minimal, we leave this to the
# caller.
return self.driver.list_policies()
def delete_policy(self, policy_id, initiator=None):
try:
ret = self.driver.delete_policy(policy_id)
except exception.NotFound:
raise exception.PolicyNotFound(policy_id=policy_id)
notifications.Audit.deleted(self._POLICY, policy_id, initiator)
return ret
@six.add_metaclass(abc.ABCMeta)
class Driver(object):
def _get_list_limit(self):
return CONF.policy.list_limit or CONF.list_limit
@abc.abstractmethod
def enforce(self, context, credentials, action, target):
"""Verify that a user is authorized to perform action.
For more information on a full implementation of this see:
`keystone.policy.backends.rules.Policy.enforce`
"""
raise exception.NotImplemented() # pragma: no cover
@abc.abstractmethod
def create_policy(self, policy_id, policy):
"""Store a policy blob.
:raises: keystone.exception.Conflict
"""
raise exception.NotImplemented() # pragma: no cover
@abc.abstractmethod
def list_policies(self):
"""List all policies."""
raise exception.NotImplemented() # pragma: no cover
@abc.abstractmethod
def get_policy(self, policy_id):
"""Retrieve a specific policy blob.
:raises: keystone.exception.PolicyNotFound
"""
raise exception.NotImplemented() # pragma: no cover
@abc.abstractmethod
def update_policy(self, policy_id, policy):
"""Update a policy blob.
:raises: keystone.exception.PolicyNotFound
"""
raise exception.NotImplemented() # pragma: no cover
@abc.abstractmethod
def delete_policy(self, policy_id):
"""Remove a policy blob.
:raises: keystone.exception.PolicyNotFound
"""
raise exception.NotImplemented() # pragma: no cover
|
