openstack/octavia
Code Issues Proposed changes

Refactors LB delete flow and removes listener delete

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This refactors the method generating the lb delete flow and
removes redundant code between cascade and the normal delete.
It also removed the listener delete from the non-cascade flow
thus speeding up the deletion.

Change-Id: I6133e9b5f1c4c440a56bf75a1e3369424971f33a
This commit is contained in:
German Eichberger 2019-03-12 15:26:42 -07:00 committed by Carlos Goncalves
parent c6eb595796
commit 6a6e0d243b
3 changed files with 22 additions and 41 deletions
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51
octavia/controller/worker/flows/load_balancer_flows.py
View File

@ -227,32 +227,7 @@ class LoadBalancerFlows(object):
:returns: The flow for deleting a load balancer
"""
(listeners_delete, store) = self._get_delete_listeners_flow(lb)
delete_LB_flow = linear_flow.Flow(constants.DELETE_LOADBALANCER_FLOW)
delete_LB_flow.add(lifecycle_tasks.LoadBalancerToErrorOnRevertTask(
requires=constants.LOADBALANCER))
delete_LB_flow.add(compute_tasks.NovaServerGroupDelete(
requires=constants.SERVER_GROUP_ID))
delete_LB_flow.add(database_tasks.MarkLBAmphoraeHealthBusy(
requires=constants.LOADBALANCER))
delete_LB_flow.add(listeners_delete)
delete_LB_flow.add(network_tasks.UnplugVIP(
requires=constants.LOADBALANCER))
delete_LB_flow.add(network_tasks.DeallocateVIP(
requires=constants.LOADBALANCER))
delete_LB_flow.add(compute_tasks.DeleteAmphoraeOnLoadBalancer(
requires=constants.LOADBALANCER))
delete_LB_flow.add(database_tasks.MarkLBAmphoraeDeletedInDB(
requires=constants.LOADBALANCER))
delete_LB_flow.add(database_tasks.DisableLBAmphoraeHealthMonitoring(
requires=constants.LOADBALANCER))
delete_LB_flow.add(database_tasks.MarkLBDeletedInDB(
requires=constants.LOADBALANCER))
delete_LB_flow.add(database_tasks.DecrementLoadBalancerQuota(
requires=constants.LOADBALANCER))
return (delete_LB_flow, store)
return self._get_delete_load_balancer_flow(lb, False)
def _get_delete_pools_flow(self, lb):
"""Sets up an internal delete flow
@ -273,16 +248,8 @@ class LoadBalancerFlows(object):
pool_name))
return (pools_delete_flow, store)
def get_cascade_delete_load_balancer_flow(self, lb):
"""Creates a flow to delete a load balancer.
:returns: The flow for deleting a load balancer
"""
(listeners_delete, store) = self._get_delete_listeners_flow(lb)
(pools_delete, pool_store) = self._get_delete_pools_flow(lb)
store.update(pool_store)
def _get_delete_load_balancer_flow(self, lb, cascade):
store = {}
delete_LB_flow = linear_flow.Flow(constants.DELETE_LOADBALANCER_FLOW)
delete_LB_flow.add(lifecycle_tasks.LoadBalancerToErrorOnRevertTask(
requires=constants.LOADBALANCER))
@ -290,6 +257,10 @@ class LoadBalancerFlows(object):
requires=constants.SERVER_GROUP_ID))
delete_LB_flow.add(database_tasks.MarkLBAmphoraeHealthBusy(
requires=constants.LOADBALANCER))
if cascade:
(listeners_delete, store) = self._get_delete_listeners_flow(lb)
(pools_delete, pool_store) = self._get_delete_pools_flow(lb)
store.update(pool_store)
delete_LB_flow.add(pools_delete)
delete_LB_flow.add(listeners_delete)
delete_LB_flow.add(network_tasks.UnplugVIP(
@ -306,9 +277,15 @@ class LoadBalancerFlows(object):
requires=constants.LOADBALANCER))
delete_LB_flow.add(database_tasks.DecrementLoadBalancerQuota(
requires=constants.LOADBALANCER))
return (delete_LB_flow, store)
def get_cascade_delete_load_balancer_flow(self, lb):
"""Creates a flow to delete a load balancer.
:returns: The flow for deleting a load balancer
"""
return self._get_delete_load_balancer_flow(lb, True)
def get_new_LB_networking_subflow(self):
"""Create a sub-flow to setup networking.

3
octavia/tests/unit/controller/worker/flows/test_load_balancer_flows.py
View File

@ -90,13 +90,12 @@ class TestLoadBalancerFlows(base.TestCase):
lb_flow, store = self.LBFlow.get_delete_load_balancer_flow(lb_mock)
self.assertIsInstance(lb_flow, flow.Flow)
self.assertEqual({'listener_123': listener_mock}, store)
self.assertIn(constants.LOADBALANCER, lb_flow.requires)
self.assertIn(constants.SERVER_GROUP_ID, lb_flow.requires)
self.assertEqual(0, len(lb_flow.provides))
self.assertEqual(3, len(lb_flow.requires))
self.assertEqual(2, len(lb_flow.requires))
def test_get_delete_load_balancer_flow_cascade(self, mock_get_net_driver):
lb_mock = mock.Mock()

5
releasenotes/notes/lb-delete-flow-refactor-cfb1bc621bbe92b4.yaml Normal file
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@ -0,0 +1,5 @@
---
fixes:
- |
Removes unnecessary listener delete from non-cascade delete load balancer
flow thus speeding up the loadbalancer delete.