Adds support for live migrations

* Updated live migrate client function to take correct params
* Added live migrate model

Change-Id: Ic2b60ff322a2568418c8ef0a16c53e69d0619269

cloudcafe/compute/servers_api/client.py

@@ -30,7 +30,7 @@ from cloudcafe.compute.servers_api.models.requests import UpdateServer
 from cloudcafe.compute.servers_api.models.requests import ChangePassword, \
     ConfirmResize, RevertResize, Resize, Reboot, MigrateServer, Lock, \
     Unlock, Start, Stop, Suspend, Resume, Pause, Unpause, CreateImage, \
-    Rebuild, ResetState, CreateBackup
+    Rebuild, ResetState, CreateBackup, LiveMigrateServer
 
 
 class ServersClient(AutoMarshallingRestClient):
@@ -434,9 +434,11 @@ class ServersClient(AutoMarshallingRestClient):
                             requestslib_kwargs=requestslib_kwargs)
         return resp
 
-    def live_migrate_server(self, server_id, requestslib_kwargs=None):
+    def live_migrate_server(self, server_id, disk_over_commit=None,
+                            block_migration=None, host=None,
+                            requestslib_kwargs=None):
         """
-        @summary: Migrates a server live to a new host
+        @summary: Migrates a server to a new host without rebooting
         @param server_id: The id of the server to migrate
         @type server_id: String
         @return: An object that represents the response to the request
@@ -445,8 +447,11 @@ class ServersClient(AutoMarshallingRestClient):
 
         url = '{base_url}/servers/{server_id}/action'.format(
             base_url=self.url, server_id=server_id)
+        request = LiveMigrateServer(
+            host=host, disk_over_commit=disk_over_commit,
+            block_migration=block_migration)
         resp = self.request('POST', url,
-                            request_entity=MigrateServer(),
+                            request_entity=request,
                             requestslib_kwargs=requestslib_kwargs)
         return resp
 

cloudcafe/compute/servers_api/models/requests.py

@@ -387,6 +387,37 @@ class MigrateServer(AutoMarshallingModel):
         return xml
 
 
+class LiveMigrateServer(AutoMarshallingModel):
+    """
+    @summary: Live Migration Request Object
+    """
+
+    def __init__(self, disk_over_commit=None,
+                 block_migration=None, host=None):
+        super(LiveMigrateServer, self).__init__()
+        self.disk_over_commit = disk_over_commit
+        self.block_migration = block_migration
+        self.host = host
+
+    def _obj_to_json(self):
+        body = {
+            'disk_over_commit': self.disk_over_commit,
+            'block_migration': self.block_migration,
+            'host': self.host
+        }
+        return json.dumps({'os-migrateLive': body})
+
+    def _obj_to_xml(self):
+        xml = Constants.XML_HEADER
+        element = ET.Element('os-migrateLive')
+        element.set('xmlns', Constants.XML_API_NAMESPACE)
+        element.set('disk_over_commit', self.disk_over_commit)
+        element.set('block_migration', self.block_migration)
+        element.set('host', self.host)
+        xml += ET.tostring(element)
+        return xml
+
+
 class ConfirmServerMigration(AutoMarshallingModel):
     """
     @summary: Confirm Server Migration Request Object