This branch implements the openstack-api-hostid blueprint: "Openstack API support for hostId".

.mailmap

@@ -40,4 +40,5 @@
 <ueno.nachi@lab.ntt.co.jp> <openstack@lab.ntt.co.jp>
 <vishvananda@gmail.com> <root@mirror.nasanebula.net>
 <vishvananda@gmail.com> <root@ubuntu>
+<naveedm9@gmail.com> <naveed.massjouni@rackspace.com>
 <vishvananda@gmail.com> <vishvananda@yahoo.com>

Authors

@@ -46,7 +46,7 @@ Monty Taylor <mordred@inaugust.com>
 MORITA Kazutaka <morita.kazutaka@gmail.com>
 Muneyuki Noguchi <noguchimn@nttdata.co.jp>
 Nachi Ueno <ueno.nachi@lab.ntt.co.jp>
-Naveed Massjouni <naveed.massjouni@rackspace.com>
+Naveed Massjouni <naveedm9@gmail.com>
 Nirmal Ranganathan <nirmal.ranganathan@rackspace.com>
 Paul Voccio <paul@openstack.org>
 Ricardo Carrillo Cruz <emaildericky@gmail.com>

nova/api/openstack/servers.py

@@ -13,6 +13,7 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+import hashlib
 import json
 import traceback
 
@@ -71,14 +72,16 @@ def _translate_detail_keys(inst):
     public_ips = utils.get_from_path(inst, 'fixed_ip/floating_ips/address')
     inst_dict['addresses']['public'] = public_ips
 
-    inst_dict['hostId'] = ''
-
     # Return the metadata as a dictionary
     metadata = {}
     for item in inst['metadata']:
         metadata[item['key']] = item['value']
     inst_dict['metadata'] = metadata
 
+    inst_dict['hostId'] = ''
+    if inst['host']:
+        inst_dict['hostId'] = hashlib.sha224(inst['host']).hexdigest()
+
     return dict(server=inst_dict)
 
 

nova/tests/api/openstack/test_servers.py

@@ -297,11 +297,45 @@ class ServersTest(test.TestCase):
         i = 0
         for s in res_dict['servers']:
             self.assertEqual(s['id'], i)
+            self.assertEqual(s['hostId'], '')
             self.assertEqual(s['name'], 'server%d' % i)
             self.assertEqual(s['imageId'], 10)
             self.assertEqual(s['metadata']['seq'], i)
             i += 1
 
+    def test_get_all_server_details_with_host(self):
+        '''
+        We want to make sure that if two instances are on the same host, then
+        they return the same hostId. If two instances are on different hosts,
+        they should return different hostId's. In this test, there are 5
+        instances - 2 on one host and 3 on another.
+        '''
+
+        def stub_instance(id, user_id=1):
+            return Instance(id=id, state=0, image_id=10, user_id=user_id,
+                display_name='server%s' % id, host='host%s' % (id % 2))
+
+        def return_servers_with_host(context, user_id=1):
+            return [stub_instance(i) for i in xrange(5)]
+
+        self.stubs.Set(nova.db.api, 'instance_get_all_by_user',
+            return_servers_with_host)
+
+        req = webob.Request.blank('/v1.0/servers/detail')
+        res = req.get_response(fakes.wsgi_app())
+        res_dict = json.loads(res.body)
+
+        server_list = res_dict['servers']
+        host_ids = [server_list[0]['hostId'], server_list[1]['hostId']]
+        self.assertTrue(host_ids[0] and host_ids[1])
+        self.assertNotEqual(host_ids[0], host_ids[1])
+
+        for i, s in enumerate(res_dict['servers']):
+            self.assertEqual(s['id'], i)
+            self.assertEqual(s['hostId'], host_ids[i % 2])
+            self.assertEqual(s['name'], 'server%d' % i)
+            self.assertEqual(s['imageId'], 10)
+
     def test_server_pause(self):
         FLAGS.allow_admin_api = True
         body = dict(server=dict(