feat: add a configuration SkipTaggingRouteTable to skip tagging the…

… route table resource if set to true.

pkg/provider/azure.go

@@ -278,6 +278,8 @@ type Config struct {
 	RouteUpdateIntervalInSeconds int `json:"routeUpdateIntervalInSeconds,omitempty" yaml:"routeUpdateIntervalInSeconds,omitempty"`
 	// LoadBalancerBackendPoolUpdateIntervalInSeconds is the interval for updating load balancer backend pool of local services. Default is 30 seconds.
 	LoadBalancerBackendPoolUpdateIntervalInSeconds int `json:"loadBalancerBackendPoolUpdateIntervalInSeconds,omitempty" yaml:"loadBalancerBackendPoolUpdateIntervalInSeconds,omitempty"`
+
+	SkipTaggingRouteTable bool `json:"skipTaggingRouteTable,omitempty" yaml:"skipTaggingRouteTable,omitempty"`
 }
 
 // MultipleStandardLoadBalancerConfiguration stores the properties regarding multiple standard load balancers.

pkg/provider/azure_routes.go

@@ -549,6 +549,10 @@ func cidrtoRfc1035(cidr string) string {
 
 // ensureRouteTableTagged ensures the route table is tagged as configured
 func (az *Cloud) ensureRouteTableTagged(rt *network.RouteTable) (map[string]*string, bool) {
+	if az.SkipTaggingRouteTable {
+		return nil, false
+	}
+
 	if az.Tags == "" && (az.TagsMap == nil || len(az.TagsMap) == 0) {
 		return nil, false
 	}

pkg/provider/azure_routes_test.go

@@ -811,3 +811,26 @@ func TestCleanupOutdatedRoutes(t *testing.T) {
 		})
 	}
 }
+
+func TestEnsureRouteTableTagged(t *testing.T) {
+	ctrl := gomock.NewController(t)
+	defer ctrl.Finish()
+
+	cloud := GetTestCloud(ctrl)
+	cloud.Tags = "a=b,c=d"
+
+	expectedTags := map[string]*string{
+		"a": pointer.String("b"),
+		"c": pointer.String("d"),
+	}
+	rt := &network.RouteTable{}
+	tags, changed := cloud.ensureRouteTableTagged(rt)
+	assert.Equal(t, expectedTags, tags)
+	assert.True(t, changed)
+
+	cloud.SkipTaggingRouteTable = true
+	rt = &network.RouteTable{}
+	tags, changed = cloud.ensureRouteTableTagged(rt)
+	assert.Nil(t, tags)
+	assert.False(t, changed)
+}