GCE-API support service for OpenStack

Change-Id: I80f6b024cb40ba31ebaacf35d7364f66115da9c6
Implements: blueprint gce-api

gceapi/api/machine_type_api.py

@@ -0,0 +1,68 @@
+#    Copyright 2013 Cloudscaling Group, Inc
+#
+#    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 gceapi.api import base_api
+from gceapi.api import clients
+from gceapi.api import utils
+from gceapi.api import zone_api
+from gceapi import exception
+
+
+class API(base_api.API):
+    """GCE Machine types API."""
+
+    KIND = "machineType"
+
+    def __init__(self, *args, **kwargs):
+        super(API, self).__init__(*args, **kwargs)
+        self._zone_api = zone_api.API()
+
+    def _get_type(self):
+        return self.KIND
+
+    def get_item(self, context, name, scope=None):
+        client = clients.nova(context)
+        try:
+            item = client.flavors.find(name=self._from_gce(name))
+        except (clients.novaclient.exceptions.NotFound,
+                clients.novaclient.exceptions.NoUniqueMatch):
+            raise exception.NotFound
+        if not item:
+            raise exception.NotFound
+        return self._prepare_item(utils.to_dict(item))
+
+    def get_items(self, context, scope=None):
+        client = clients.nova(context)
+        items = client.flavors.list()
+        return [self._prepare_item(utils.to_dict(item))
+                for item in items]
+
+    def get_scopes(self, context, item):
+        # TODO(apavlov): too slow for all...
+        return self._zone_api.get_items_as_scopes(context)
+
+    def get_item_by_id(self, context, machine_type_id):
+        client = clients.nova(context)
+        item = client.flavors.get(machine_type_id)
+        return self._prepare_item(utils.to_dict(item))
+
+    def _prepare_item(self, item):
+        item["name"] = self._to_gce(item["name"])
+        return item
+
+    def _from_gce(self, name):
+        return name.replace("-", ".")
+
+    def _to_gce(self, name):
+        return name.replace(".", "-")