Port migrations extension to v3 API part 2

This patch contains changes to port migrations extension to v3.

Partially implements blueprint nova-v3-api

Change-Id: Ie79a0d1eeeee7d4fce7a61d8e0cec90982368cf2

etc/nova/policy.json

@@ -189,6 +189,7 @@
     "compute_extension:v3:os-used-limits": "",
     "compute_extension:v3:os-used-limits:tenant": "rule:admin_api",
     "compute_extension:migrations:index": "rule:admin_api",
+    "compute_extension:v3:os-migrations:index": "rule:admin_api",
 
 
     "volume:create": "",

nova/api/openstack/compute/plugins/v3/migrations.py

@@ -18,12 +18,12 @@ from nova.api.openstack import xmlutil
 from nova import compute
 
 
-XMLNS = "http://docs.openstack.org/compute/ext/migrations/api/v2.0"
+XMLNS = "http://docs.openstack.org/compute/ext/migrations/api/v3"
 ALIAS = "os-migrations"
 
 
 def authorize(context, action_name):
-    action = 'migrations:%s' % action_name
+    action = 'v3:%s:%s' % (ALIAS, action_name)
     extensions.extension_authorizer('compute', action)(context)
 
 
@@ -62,12 +62,12 @@ class MigrationsController(object):
         return {'migrations': migrations}
 
 
-class Migrations(extensions.ExtensionDescriptor):
+class Migrations(extensions.V3APIExtensionBase):
     """Provide data on migrations."""
     name = "Migrations"
     alias = ALIAS
     namespace = XMLNS
-    updated = "2013-05-30T00:00:00+00:00"
+    version = 1
 
     def get_resources(self):
         resources = []
@@ -75,3 +75,6 @@ class Migrations(extensions.ExtensionDescriptor):
                                                 MigrationsController())
         resources.append(resource)
         return resources
+
+    def get_controller_extensions(self):
+        return []

nova/tests/api/openstack/compute/plugins/v3/test_migrations.py

@@ -18,7 +18,7 @@ import datetime
 
 from lxml import etree
 
-from nova.api.openstack.compute.contrib import migrations
+from nova.api.openstack.compute.plugins.v3 import migrations
 from nova import context
 from nova import exception
 from nova import test

nova/tests/fake_policy.py

@@ -266,7 +266,7 @@ policy_data = """
     "compute_extension:v3:os-used-limits": "",
     "compute_extension:v3:os-used-limits:tenant": "is_admin:True",
     "compute_extension:migrations:index": "is_admin:True",
-
+    "compute_extension:v3:os-migrations:index": "is_admin:True",
 
     "volume:create": "",
     "volume:get": "",

setup.cfg

@@ -88,6 +88,7 @@ nova.api.v3.extensions =
     instance_usage_audit_log = nova.api.openstack.compute.plugins.v3.instance_usage_audit_log:InstanceUsageAuditLog
     keypairs = nova.api.openstack.compute.plugins.v3.keypairs:Keypairs
     limits = nova.api.openstack.compute.plugins.v3.limits:Limits
+    migrations = nova.api.openstack.compute.plugins.v3.migrations:Migrations
     multinic = nova.api.openstack.compute.plugins.v3.multinic:Multinic
     quota_classes = nova.api.openstack.compute.plugins.v3.quota_classes:QuotaClasses
     quota_sets = nova.api.openstack.compute.plugins.v3.quota_sets:QuotaSets