Moved net-mtu extension definition

The module is not really imported from anywhere external to neutron, but
I am going to introduce a new extension that will allow to pass mtu on
create, and having both defined in a single place should keep it more
sane.

Change-Id: I41d5b399a6bd02f89f2e60c5ccb3fc0944b61255
Related-Bug: #1671634

neutron_lib/api/definitions/__init__.py

@@ -23,6 +23,7 @@ from neutron_lib.api.definitions import firewallrouterinsertion
 from neutron_lib.api.definitions import l3
 from neutron_lib.api.definitions import logging_resource
 from neutron_lib.api.definitions import network
+from neutron_lib.api.definitions import network_mtu
 from neutron_lib.api.definitions import port
 from neutron_lib.api.definitions import port_security
 from neutron_lib.api.definitions import portbindings
@@ -48,6 +49,7 @@ _ALL_API_DEFINITIONS = {
     l3,
     logging_resource,
     network,
+    network_mtu,
     port,
     port_security,
     portbindings,

neutron_lib/api/definitions/network_mtu.py

@@ -0,0 +1,78 @@
+# 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 neutron_lib.api.definitions import network
+
+
+MTU = 'mtu'
+
+# The alias of the extension.
+ALIAS = 'net-mtu'
+
+# The label to lookup the plugin in the plugin directory. It can match the
+# alias, as required.
+LABEL = ALIAS
+
+# Whether or not this extension is simply signaling behavior to the user
+# or it actively modifies the attribute map.
+IS_SHIM_EXTENSION = False
+
+# Whether the extension is marking the adoption of standardattr model for
+# legacy resources, or introducing new standardattr attributes. False or
+# None if the standardattr model is adopted since the introduction of
+# resource extension.
+# If this is True, the alias for the extension should be prefixed with
+# 'standard-attr-'.
+IS_STANDARD_ATTR_EXTENSION = False
+
+# The name of the extension.
+NAME = 'Network MTU'
+
+# A prefix for API resources. An empty prefix means that the API is going
+# to be exposed at the v2/ level as any other core resource.
+API_PREFIX = ''
+
+# The description of the extension.
+DESCRIPTION = "Provides MTU attribute for a network resource."
+
+# A timestamp of when the extension was introduced.
+UPDATED_TIMESTAMP = "2015-03-25T10:00:00-00:00"
+
+
+RESOURCE_ATTRIBUTE_MAP = {
+    network.COLLECTION_NAME: {
+        MTU: {'allow_post': False, 'allow_put': False,
+              'is_visible': True},
+    },
+}
+
+# The subresource attribute map for the extension. It adds child resources
+# to main extension's resource. The subresource map must have a parent and
+# a parameters entry. If an extension does not need such a map, None can
+# be specified (mandatory).
+SUB_RESOURCE_ATTRIBUTE_MAP = {}
+
+# The action map: it associates verbs with methods to be performed on
+# the API resource.
+ACTION_MAP = {}
+
+# The action status.
+ACTION_STATUS = {
+}
+
+# The list of required extensions.
+REQUIRED_EXTENSIONS = []
+
+# The list of optional extensions.
+OPTIONAL_EXTENSIONS = []

neutron_lib/tests/unit/api/definitions/test_network_mtu.py

@@ -0,0 +1,19 @@
+#    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 neutron_lib.api.definitions import network_mtu
+from neutron_lib.tests.unit.api.definitions import base
+
+
+class NetworkMtuDefinitionTestCase(base.DefinitionBaseTestCase):
+    extension_module = network_mtu
+    extension_attributes = ('mtu',)

releasenotes/notes/moved-netmtu-extension-5999348000adcfaf.yaml

@@ -0,0 +1,4 @@
+---
+features:
+  - The ``net-mtu`` extension API definition has been added as
+    ``neutron_lib.api.definitions.network_mtu``.