Register default certificate policies in code

This commit uses the existing policy-in-code module to move all
default policies for certificates into code. This commit also adds
helpful documentation about each API those policies protect,
which will be generated in sample policy files.

Co-authored-By: Dai Dang-Van <daidv@vn.fujitsu.com>
Implements: blueprint policy-in-code

Change-Id: I1abc75441d7984497739194a273d8bda63f832a0

etc/magnum/policy.json

@@ -1,8 +1,4 @@
 {
-    "certificate:rotate_ca": "rule:admin_or_owner",
-    "certificate:create": "rule:admin_or_user or rule:cluster_user",
-    "certificate:get": "rule:admin_or_user or rule:cluster_user",
-
     "magnum-service:get_all": "rule:admin_api",
     "stats:get_all": "rule:admin_or_owner"
 }

magnum/common/policies/__init__.py

@@ -17,6 +17,7 @@ import itertools
 from magnum.common.policies import base
 from magnum.common.policies import bay
 from magnum.common.policies import baymodel
+from magnum.common.policies import certificate
 from magnum.common.policies import cluster
 from magnum.common.policies import cluster_template
 from magnum.common.policies import quota
@@ -27,6 +28,7 @@ def list_rules():
         base.list_rules(),
         bay.list_rules(),
         baymodel.list_rules(),
+        certificate.list_rules(),
         cluster.list_rules(),
         cluster_template.list_rules(),
         quota.list_rules()

magnum/common/policies/certificate.py

@@ -0,0 +1,60 @@
+# 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 oslo_policy import policy
+
+from magnum.common.policies import base
+
+CERTIFICATE = 'certificate:%s'
+RULE_ADMIN_OR_USER_OR_CLUSTER_USER = base.RULE_ADMIN_OR_USER + " or " + \
+    base.RULE_CLUSTER_USER
+
+rules = [
+    policy.DocumentedRuleDefault(
+        name=CERTIFICATE % 'create',
+        check_str=RULE_ADMIN_OR_USER_OR_CLUSTER_USER,
+        description='Sign a new certificate by the CA.',
+        operations=[
+            {
+                'path': '/v1/certificates',
+                'method': 'POST'
+            }
+        ]
+    ),
+    policy.DocumentedRuleDefault(
+        name=CERTIFICATE % 'get',
+        check_str=RULE_ADMIN_OR_USER_OR_CLUSTER_USER,
+        description='Retrieve CA information about the given bay/cluster.',
+        operations=[
+            {
+                'path': '/v1/certificates/{bay_uuid/cluster_uuid}',
+                'method': 'GET'
+            }
+        ]
+    ),
+    policy.DocumentedRuleDefault(
+        name=CERTIFICATE % 'rotate_ca',
+        check_str=base.RULE_ADMIN_OR_OWNER,
+        description='Rotate the CA certificate on the given bay/cluster.',
+        operations=[
+            {
+                'path': '/v1/certificates/{bay_uuid/cluster_uuid}',
+                'method': 'PATCH'
+            }
+        ]
+    )
+]
+
+
+def list_rules():
+    return rules

magnum/tests/fake_policy.py

@@ -15,9 +15,6 @@
 
 policy_data = """
 {
-    "certificate:create": "",
-    "certificate:get": "",
-
     "magnum-service:get_all": "",
     "stats:get_all": ""
 }