Register default cluster policies in code

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

Change-Id: I36e69fe930505c2777f4376be1f6ddf17016998f
Co-authored-By: Dai Dang-Van <daidv@vn.fujitsu.com>
Implements: blueprint policy-in-code

etc/magnum/policy.json

@@ -1,13 +1,6 @@
 {
     "default": "rule:admin_or_owner",
 
-    "cluster:create": "rule:deny_cluster_user",
-    "cluster:delete": "rule:deny_cluster_user",
-    "cluster:detail": "rule:deny_cluster_user",
-    "cluster:get": "rule:deny_cluster_user",
-    "cluster:get_all": "rule:deny_cluster_user",
-    "cluster:update": "rule:deny_cluster_user",
-
     "clustertemplate:create": "rule:deny_cluster_user",
     "clustertemplate:delete": "rule:deny_cluster_user",
     "clustertemplate:detail": "rule:deny_cluster_user",

magnum/common/policies/__init__.py

@@ -17,11 +17,13 @@ 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 cluster
 
 
 def list_rules():
     return itertools.chain(
         base.list_rules(),
         bay.list_rules(),
-        baymodel.list_rules()
+        baymodel.list_rules(),
+        cluster.list_rules()
     )

magnum/common/policies/cluster.py

@@ -0,0 +1,91 @@
+# 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
+
+CLUSTER = 'cluster:%s'
+
+rules = [
+    policy.DocumentedRuleDefault(
+        name=CLUSTER % 'create',
+        check_str=base.RULE_DENY_CLUSTER_USER,
+        description='Create a new cluster.',
+        operations=[
+            {
+                'path': '/v1/clusters',
+                'method': 'POST'
+            }
+        ]
+    ),
+    policy.DocumentedRuleDefault(
+        name=CLUSTER % 'delete',
+        check_str=base.RULE_DENY_CLUSTER_USER,
+        description='Delete a cluster.',
+        operations=[
+            {
+                'path': '/v1/clusters/{cluster_ident}',
+                'method': 'DELETE'
+            }
+        ]
+    ),
+    policy.DocumentedRuleDefault(
+        name=CLUSTER % 'detail',
+        check_str=base.RULE_DENY_CLUSTER_USER,
+        description='Retrieve a list of clusters with detail.',
+        operations=[
+            {
+                'path': '/v1/clusters',
+                'method': 'GET'
+            }
+        ]
+    ),
+    policy.DocumentedRuleDefault(
+        name=CLUSTER % 'get',
+        check_str=base.RULE_DENY_CLUSTER_USER,
+        description='Retrieve information about the given cluster.',
+        operations=[
+            {
+                'path': '/v1/clusters/{cluster_ident}',
+                'method': 'GET'
+            }
+        ]
+    ),
+    policy.DocumentedRuleDefault(
+        name=CLUSTER % 'get_all',
+        check_str=base.RULE_DENY_CLUSTER_USER,
+        description='Retrieve a list of clusters.',
+        operations=[
+            {
+                'path': '/v1/clusters/',
+                'method': 'GET'
+            }
+        ]
+    ),
+    policy.DocumentedRuleDefault(
+        name=CLUSTER % 'update',
+        check_str=base.RULE_DENY_CLUSTER_USER,
+        description='Update an existing cluster.',
+        operations=[
+            {
+                'path': '/v1/clusters/{cluster_ident}',
+                'method': 'PATCH'
+            }
+        ]
+    )
+]
+
+
+def list_rules():
+    return rules

magnum/tests/fake_policy.py

@@ -17,13 +17,6 @@ policy_data = """
 {
     "default": "rule:admin_or_owner",
 
-    "cluster:create": "",
-    "cluster:delete": "",
-    "cluster:detail": "",
-    "cluster:get": "",
-    "cluster:get_all": "",
-    "cluster:update": "",
-
     "clustertemplate:create": "",
     "clustertemplate:delete": "",
     "clustertemplate:detail": "",