Making db instance restart async.

reddwarf/instance/models.py

@@ -447,13 +447,8 @@ class Instance(SimpleInstance):
         #                   status is no longer in effect.
         self.db_info.task_status = InstanceTasks.REBOOTING
         self.db_info.save()
-        try:
+        LOG.debug("Instance %s set to RESTARTING." % self.id)
-            self.get_guest().restart()
+        task_api.API(self.context).restart(self.id)
-        except rd_exceptions.GuestError:
-            LOG.error("Failure to restart MySQL.")
-        finally:
-            self.db_info.task_status = InstanceTasks.NONE
-            self.db_info.save()
 
     def validate_can_perform_restart_or_reboot(self):
         """

reddwarf/taskmanager/api.py

@@ -70,6 +70,10 @@ class API(object):
                    old_flavor_size=old_flavor_size,
                    new_flavor_size=new_flavor_size)
 
+    def restart(self, instance_id):
+        LOG.debug("Making async call to restart instance: %s" % instance_id)
+        self._cast("restart", instance_id=instance_id)
+
     def delete_instance(self, instance_id):
         LOG.debug("Making async call to delete instance: %s" % instance_id)
         self._cast("delete_instance", instance_id=instance_id)

reddwarf/taskmanager/manager.py

@@ -64,6 +64,10 @@ class TaskManager(service.Manager):
         instance_tasks.resize_flavor(new_flavor_id, old_flavor_size,
                                      new_flavor_size)
 
+    def restart(self, context, instance_id):
+        instance_tasks = models.InstanceTasks.load(context, instance_id)
+        instance_tasks.restart()
+
     def delete_instance(self, context, instance_id):
         instance_tasks = models.InstanceTasks.load(context, instance_id)
         instance_tasks.delete_instance()

reddwarf/taskmanager/models.py

@@ -20,6 +20,7 @@ from novaclient import exceptions as nova_exceptions
 from reddwarf.common import config
 from reddwarf.common import remote
 from reddwarf.common import utils
+from reddwarf.common.exception import GuestError
 from reddwarf.common.exception import PollTimeOut
 from reddwarf.common.exception import VolumeCreationFailure
 from reddwarf.common.exception import NotFound
@@ -210,6 +211,16 @@ class InstanceTasks:
             LOG.error(e)
             self._log_service_status(instance_id, ServiceStatuses.UNKNOWN)
 
+    def restart(self):
+        LOG.debug("Restarting instance %s " % self.db_info.id)
+        try:
+            self.guest.restart()
+        except GuestError:
+            LOG.error("Failure to restart instance %s " % self.db_info.id)
+        finally:
+            self.db_info.task_status = inst_models.InstanceTasks.NONE
+            self.db_info.save()
+
     def _create_volume(self, instance_id, volume_size):
         LOG.info("Entering create_volume")
         LOG.debug(_("Starting to create the volume for the instance"))