Merge "Add support for updating instance type"

api-ref/source/types.inc

@@ -94,6 +94,53 @@ Response
 .. literalinclude:: ../../doc/api_samples/types/type-create-post-resp.json
    :language: javascript
 
+Update Type
+===========
+
+.. rest_method:: PUT /types/{type_uuid}
+
+Updates a type.
+
+Updating a type is typically only available to administrators of a
+cloud because this has implications for scheduling efficiently in the cloud.
+
+Normal response codes: 200
+
+Error response codes: badRequest(400), unauthorized(401), forbidden(403),
+conflict(409)
+
+Request
+-------
+
+.. rest_parameters:: parameters.yaml
+
+   - name: type_name
+   - description: type_description
+   - is_public: type_is_public_not_required
+
+**Example Update Type**
+
+.. literalinclude:: ../../doc/api_samples/types/type-update-put-req.json
+   :language: javascript
+
+Response
+--------
+
+.. rest_parameters:: parameters.yaml
+
+   - name: type_name
+   - links: links
+   - description: type_description
+   - uuid: type_uuid
+   - created_at: created_at
+   - updated_at: updated_at
+   - is_public: type_is_public
+   - extra_specs: type_extra_specs
+
+**Example Update type**
+
+.. literalinclude:: ../../doc/api_samples/types/type-update-put-resp.json
+   :language: javascript
 
 Show Type Details
 ===================

doc/api_samples/types/type-update-put-req.json

@@ -0,0 +1,5 @@
+{
+    "name": "updated_type",
+    "description": "this is a type to be updated",
+    "is_public": false
+}

doc/api_samples/types/type-update-put-resp.json

@@ -0,0 +1,19 @@
+{
+  "description": "this is a type to be updated",
+  "links": [
+    {
+      "href": "http://10.3.150.17:6688/v1/types/7de2859d-ec6d-42c7-bb86-9d630ba5ac94",
+      "rel": "self"
+    },
+    {
+      "href": "http://10.3.150.17:6688/types/7de2859d-ec6d-42c7-bb86-9d630ba5ac94",
+      "rel": "bookmark"
+    }
+  ],
+  "created_at": "2016-09-27T02:37:21.966342+00:00",
+  "uuid": "7de2859d-ec6d-42c7-bb86-9d630ba5ac94",
+  "updated_at": null,
+  "extra_specs": {},
+  "is_public": false,
+  "name": "updated_type"
+}

nimble/api/controllers/v1/instance_types.py

@@ -23,6 +23,8 @@ from nimble.api.controllers import base
 from nimble.api.controllers import link
 from nimble.api.controllers.v1 import types
 from nimble.api import expose
+from nimble.common import exception
+from nimble.common.i18n import _
 from nimble import objects
 
 
@@ -161,6 +163,34 @@ class InstanceTypeController(rest.RestController):
                                                  new_instance_type.uuid)
         return InstanceType.convert_with_links(new_instance_type)
 
+    @expose.expose(InstanceType, types.uuid, body=InstanceType)
+    def put(self, instance_type_uuid, instance_type):
+        """Update an instance type.
+
+        :param instance_type_uuid: the uuid of instance_type to be updated.
+        :param instance_type: a instance type within the request body.
+        """
+        try:
+            inst_type_in_db = objects.InstanceType.get(
+                pecan.request.context, instance_type_uuid)
+        except exception.InstanceTypeNotFound:
+            msg = (_("InstanceType %s could not be found") %
+                   instance_type_uuid)
+            raise wsme.exc.ClientSideError(
+                msg, status_code=http_client.BAD_REQUEST)
+        need_to_update = False
+        for attr in ('name', 'description', 'is_public'):
+            if getattr(instance_type, attr) != wtypes.Unset:
+                need_to_update = True
+                setattr(inst_type_in_db, attr, getattr(instance_type, attr))
+        # don't need to call db_api if no update
+        if need_to_update:
+            inst_type_in_db.save()
+        # Set the HTTP Location Header
+        pecan.response.location = link.build_url('instance_type',
+                                                 inst_type_in_db.uuid)
+        return InstanceType.convert_with_links(inst_type_in_db)
+
     @expose.expose(None, types.uuid, status_code=http_client.NO_CONTENT)
     def delete(self, instance_type_uuid):
         """Delete an instance type.

nimble/db/api.py

@@ -50,6 +50,9 @@ class Connection(object):
     def instance_type_get(self, context, instance_type_uuid):
         """Get instance type by uuid."""
 
+    def instance_type_update(self, context, instance_type_id, values):
+        """Update an instance type."""
+
     @abc.abstractmethod
     def instance_type_get_all(self, context):
         """Get all instance types."""

nimble/db/sqlalchemy/api.py

@@ -137,6 +137,19 @@ class Connection(api.Connection):
             raise exception.InstanceTypeNotFound(
                 instance_type=instance_type_uuid)
 
+    def instance_type_update(self, context, instance_type_id, values):
+        with _session_for_write():
+            query = model_query(context, models.InstanceTypes)
+            query = add_identity_filter(query, instance_type_id)
+            try:
+                ref = query.with_lockmode('update').one()
+            except NoResultFound:
+                raise exception.InstanceTypeNotFound(
+                    instance_type=instance_type_id)
+
+            ref.update(values)
+            return ref
+
     def instance_type_get_all(self, context):
         results = model_query(context, models.InstanceTypes)
         return [_dict_with_extra_specs(i) for i in results]

nimble/objects/instance_type.py

@@ -16,7 +16,6 @@
 
 from oslo_versionedobjects import base as object_base
 
-from nimble.common import exception
 from nimble.db import api as dbapi
 from nimble.objects import base
 from nimble.objects import fields as object_fields
@@ -92,10 +91,6 @@ class InstanceType(base.NimbleObject, object_base.VersionedObjectDictCompat):
     def save(self, context=None):
         updates = self.obj_get_changes()
         extra_specs = updates.pop('extra_specs', None)
-        if updates:
-            raise exception.ObjectActionError(
-                action='save', reason='read-only fields were changed')
-
         if extra_specs is not None:
             deleted_keys = (set(self._orig_extra_specs.keys()) -
                             set(extra_specs.keys()))
@@ -105,6 +100,7 @@ class InstanceType(base.NimbleObject, object_base.VersionedObjectDictCompat):
 
         if added_keys or deleted_keys:
             self.save_extra_specs(context, self.extra_specs, deleted_keys)
+        self.dbapi.instance_type_update(context, self.uuid, updates)
 
     def save_extra_specs(self, context, to_add=None, to_delete=None):
         """Add or delete extra_specs.

nimble/tests/functional/api/v1/test_instance_types.py

@@ -69,6 +69,19 @@ class TestInstanceType(v1_test.APITestV1):
         resp = self.get_json('/types')
         self.assertEqual(3, len(resp['types']))
 
+    def test_instance_type_update(self):
+        self._prepare_instance_types()
+        resp = self.get_json('/types/' + self.TYPE_UUIDS[0])
+        self.assertEqual('test0', resp['name'])
+        self.assertEqual('just test0', resp['description'])
+        values = {"name": "update_name", "description": "updated_description",
+                  "is_public": False}
+        self.put_json('/types/' + self.TYPE_UUIDS[0], values, status=200)
+        resp = self.get_json('/types/' + self.TYPE_UUIDS[0])
+        self.assertEqual('update_name', resp['name'])
+        self.assertEqual('updated_description', resp['description'])
+        self.assertEqual(False, resp['is_public'])
+
 
 class TestInstanceTypeExtra(v1_test.APITestV1):
     TYPE_UUID = 'ff28b5a2-73e5-431c-b4b7-1b96b74bca7b'

nimble/tests/unit/objects/test_instance_type.py

@@ -14,7 +14,6 @@
 import mock
 from oslo_context import context
 
-from nimble.common import exception
 from nimble import objects
 from nimble.tests.unit.db import base
 from nimble.tests.unit.db import utils
@@ -72,8 +71,15 @@ class TestInstanceTypeObject(base.DbTestCase):
             mock_type_destroy.assert_called_once_with(self.context, uuid)
 
     def test_save(self):
+        uuid = self.fake_type['uuid']
+        with mock.patch.object(self.dbapi, 'instance_type_update',
+                               autospec=True) as mock_inst_type_update:
             instance_type = objects.InstanceType(self.context,
                                                  **self.fake_type)
-        self.assertRaises(exception.ObjectActionError,
-                          instance_type.save,
-                          self.context)
+            instance_type.name = 'changed_name'
+            updates = instance_type.obj_get_changes()
+            instance_type.save(self.context)
+            updates.pop('extra_specs', None)
+            mock_inst_type_update.return_value = self.fake_type
+            mock_inst_type_update.assert_called_once_with(
+                self.context, uuid, updates)