From f844a2bc30a3b2aeafbcbfaee3e153493948ce1a Mon Sep 17 00:00:00 2001
From: Mengxin Liu <mengxin@alauda.io>
Date: Tue, 14 Sep 2021 14:17:13 +0800
Subject: [PATCH] fix: re-check ns annotation to avoid annotations lost

(cherry picked from commit c71620ce129baf8cc2434129ba965440eebb3ed2)
---
 pkg/controller/namespace.go | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/pkg/controller/namespace.go b/pkg/controller/namespace.go
index 2930b0ba17c..587c578ca74 100644
--- a/pkg/controller/namespace.go
+++ b/pkg/controller/namespace.go
@@ -65,6 +65,12 @@ func (c *Controller) enqueueUpdateNamespace(old, new interface{}) {
 			c.updateNpQueue.Add(np)
 		}
 	}
+
+	// in case annotations are removed by other controllers
+	if newNs.Annotations == nil || newNs.Annotations[util.LogicalSwitchAnnotation] == "" {
+		klog.Warningf("no logical switch annotation for ns %s", newNs.Name)
+		c.addNamespaceQueue.Add(newNs.Name)
+	}
 }
 
 func (c *Controller) runAddNamespaceWorker() {