IngressRoute: add an option to disable cross-namespace routing

Co-authored-by: Jean-Baptiste Doumenjou <925513+jbdoumenjou@users.noreply.github.com>

integration/fixtures/k8s/07-ingressroute-cross-namespace.yml

@@ -0,0 +1,120 @@
+---
+apiVersion: v1
+kind: Namespace
+metadata:
+  name: other-ns
+
+---
+apiVersion: v1
+kind: Service
+metadata:
+  name: whoami
+  namespace: other-ns
+
+spec:
+  ports:
+    - name: http
+      port: 80
+  selector:
+    app: traefiklabs
+    task: whoami
+
+---
+apiVersion: traefik.containo.us/v1alpha1
+kind: IngressRoute
+metadata:
+  name: test6.route
+  namespace: other-ns
+
+spec:
+  entryPoints:
+    - web
+  routes:
+  - match: Host(`foo.com`) && PathPrefix(`/a`)
+    kind: Rule
+    services:
+    - name: whoami
+      namespace: default
+      port: 80
+  - match: Host(`foo.com`) && PathPrefix(`/b`)
+    kind: Rule
+    services:
+    - name: wrr2
+      namespace: default
+      kind: TraefikService
+  - match: Host(`foo.com`) && PathPrefix(`/c`)
+    kind: Rule
+    services:
+    - name: wrr3
+      kind: TraefikService
+  - match: Host(`foo.com`) && PathPrefix(`/d`)
+    kind: Rule
+    services:
+    - name: whoami
+      namespace: other-ns
+      port: 80
+    middlewares:
+    - name: stripprefix2
+      namespace: default
+  - match: Host(`foo.com`) && PathPrefix(`/e`)
+    kind: Rule
+    services:
+    - name: whoami
+      port: 80
+    middlewares:
+    - name: test-errorpage
+
+---
+apiVersion: traefik.containo.us/v1alpha1
+kind: TraefikService
+metadata:
+  name: wrr2
+  namespace: default
+
+spec:
+  weighted:
+    services:
+      - name: whoami
+        port: 80
+
+---
+apiVersion: traefik.containo.us/v1alpha1
+kind: TraefikService
+metadata:
+  name: wrr3
+  namespace: other-ns
+
+spec:
+  weighted:
+    services:
+      - name: whoami
+        namespace: default
+        port: 80
+
+---
+apiVersion: traefik.containo.us/v1alpha1
+kind: Middleware
+metadata:
+  name: stripprefix2
+  namespace: default
+
+spec:
+  stripPrefix:
+    prefixes:
+      - /tobestripped
+
+---
+apiVersion: traefik.containo.us/v1alpha1
+kind: Middleware
+metadata:
+  name: test-errorpage
+
+spec:
+  errors:
+    status:
+      - 500-599
+    query: /{status}.html
+    service:
+      name: whoami
+      namespace: other-ns
+      port: 80

integration/fixtures/k8s_crd.toml

@@ -16,3 +16,4 @@
     address = ":8000"
 
 [providers.kubernetesCRD]
+  allowCrossNamespace = false

integration/k8s_test.go

@@ -53,6 +53,7 @@ func (s *K8sSuite) TearDownSuite(c *check.C) {
 		"./fixtures/k8s/coredns.yaml",
 		"./fixtures/k8s/rolebindings.yaml",
 		"./fixtures/k8s/traefik.yaml",
+		"./fixtures/k8s/ccm.yaml",
 	}
 
 	for _, filename := range generatedFiles {

integration/testdata/rawdata-crd.json

@@ -50,6 +50,20 @@
 			"using": [
 				"web"
 			]
+		},
+		"other-ns-test6-route-482e4988e134701d8cc8@kubernetescrd": {
+			"entryPoints": [
+				"web"
+			],
+			"service": "other-ns-wrr3",
+			"rule": "Host(`foo.com`) \u0026\u0026 PathPrefix(`/c`)",
+			"error": [
+				"the service \"other-ns-wrr3@kubernetescrd\" does not exist"
+			],
+			"status": "disabled",
+			"using": [
+				"web"
+			]
 		}
 	},
 	"middlewares": {
@@ -64,6 +78,14 @@
 				"default-test2-route-23c7f4c450289ee29016@kubernetescrd"
 			]
 		},
+		"default-stripprefix2@kubernetescrd": {
+			"stripPrefix": {
+				"prefixes": [
+					"/tobestripped"
+				]
+			},
+			"status": "enabled"
+		},
 		"default-stripprefix@kubernetescrd": {
 			"stripPrefix": {
 				"prefixes": [
@@ -172,6 +194,17 @@
 				"default-test3-route-7d0ac22d3d8db4b82618@kubernetescrd"
 			]
 		},
+		"default-wrr2@kubernetescrd": {
+			"weighted": {
+				"services": [
+					{
+						"name": "default-whoami-80",
+						"weight": 1
+					}
+				]
+			},
+			"status": "enabled"
+		},
 		"noop@internal": {
 			"status": "enabled"
 		}