fix: propagate source criterion config to RateLimit middleware in Kubernetes CRD

pkg/provider/kubernetes/crd/fixtures/with_middleware.yml

@@ -9,6 +9,24 @@ spec:
     prefixes:
       - /tobestripped
 
+---
+apiVersion: traefik.containo.us/v1alpha1
+kind: Middleware
+metadata:
+  name: ratelimit
+  namespace: default
+
+spec:
+  rateLimit:
+    period: 1m
+    average: 6
+    burst: 12
+    sourceCriterion:
+      ipStrategy:
+        excludedIPs:
+          - 127.0.0.1/32
+          - 192.168.1.7
+
 ---
 apiVersion: traefik.containo.us/v1alpha1
 kind: Middleware
@@ -40,5 +58,6 @@ spec:
           port: 80
       middlewares:
         - name: stripprefix
+        - name: ratelimit
         - name: addprefix
           namespace: foo

pkg/provider/kubernetes/crd/kubernetes.go

@@ -426,6 +426,10 @@ func createRateLimitMiddleware(rateLimit *v1alpha1.RateLimit) (*dynamic.RateLimi
 		}
 	}
 
+	if rateLimit.SourceCriterion != nil {
+		rl.SourceCriterion = rateLimit.SourceCriterion
+	}
+
 	return rl, nil
 }
 

pkg/provider/kubernetes/crd/kubernetes_test.go

@@ -1470,10 +1470,22 @@ func TestLoadIngressRoutes(t *testing.T) {
 							Service:     "default-test2-route-23c7f4c450289ee29016",
 							Rule:        "Host(`foo.com`) && PathPrefix(`/tobestripped`)",
 							Priority:    12,
-							Middlewares: []string{"default-stripprefix", "foo-addprefix"},
+							Middlewares: []string{"default-stripprefix", "default-ratelimit", "foo-addprefix"},
 						},
 					},
 					Middlewares: map[string]*dynamic.Middleware{
+						"default-ratelimit": {
+							RateLimit: &dynamic.RateLimit{
+								Average: 6,
+								Burst:   12,
+								Period:  ptypes.Duration(60 * time.Second),
+								SourceCriterion: &dynamic.SourceCriterion{
+									IPStrategy: &dynamic.IPStrategy{
+										ExcludedIPs: []string{"127.0.0.1/32", "192.168.1.7"},
+									},
+								},
+							},
+						},
 						"default-stripprefix": {
 							StripPrefix: &dynamic.StripPrefix{
 								Prefixes: []string{"/tobestripped"},