feat(istio): routerule example added (not working as intended)

Author: rolandszoke

istio_examples/RouteRule/api/apiDeploymentV1.yaml

@@ -0,0 +1,24 @@
+apiVersion: apps/v1beta1
+kind: Deployment
+metadata:
+  name: api-v1
+  labels:
+    app: api
+    version: v1
+spec:
+  replicas: 1
+  template:
+    metadata:
+      labels:
+        app: api
+        version: v1
+      name: api-v1
+    spec:
+      containers:
+      - name: api
+        image: k8s/api:v1
+        ports:
+        - containerPort: 5000
+        env:
+        - name: VERSION
+          value: "v1"

istio_examples/RouteRule/api/apiDeploymentV2.yaml

@@ -0,0 +1,24 @@
+apiVersion: apps/v1beta1
+kind: Deployment
+metadata:
+  name: api-v2
+  labels:
+    app: api
+    version: v2
+spec:
+  replicas: 1
+  template:
+    metadata:
+      labels:
+        app: api
+        version: v2
+      name: api-v2
+    spec:
+      containers:
+      - name: api
+        image: k8s/api:v1
+        ports:
+        - containerPort: 5000
+        env:
+        - name: VERSION
+          value: "v2"

istio_examples/RouteRule/api/routerule.yaml

@@ -0,0 +1,30 @@
+# every request with Version: v2 header to api service will be sent to "v2" instance
+# all remaning will be sent to "v1"
+apiVersion: config.istio.io/v1alpha2
+kind: RouteRule
+metadata:
+  name: api-v2
+spec:
+  destination:
+    name: api
+  precedence: 2
+  match:
+    request:
+      headers:
+        version: v2
+  route:
+  - labels:
+      version: v2
+---
+apiVersion: config.istio.io/v1alpha2
+kind: RouteRule
+metadata:
+  name: api-default
+spec:
+  destination:
+    name: api
+  precedence: 1
+  route:
+  - labels:
+      version: v1
+    weight: 100

istio_examples/RouteRule/api/service.yaml

@@ -0,0 +1,12 @@
+kind: Service
+apiVersion: v1
+metadata:
+  name: api
+spec:
+  selector:
+    app: api
+  type: NodePort
+  ports:
+  - protocol: TCP
+    port: 5000
+    nodePort: 30010

istio_examples/RouteRule/api/src/Dockerfile

@@ -0,0 +1,11 @@
+FROM node:8.9.4-alpine
+
+ENV PORT 5000
+
+COPY package.json package.json
+RUN npm install
+
+COPY . .
+
+CMD ["node", "."]
+EXPOSE $PORT