feat(istio): fault injection example

Author: rolandszoke

istio_examples/FaultInjection/deploy.sh

@@ -0,0 +1,6 @@
+#!/bin/bash
+
+DIR=$(pwd)
+
+kubectl delete routerule -l app=github
+kubectl apply -f <(istioctl kube-inject -f $DIR/faultinjection.yml)

istio_examples/FaultInjection/faultinjection.yml

@@ -0,0 +1,17 @@
+apiVersion: config.istio.io/v1alpha2
+kind: RouteRule
+metadata:
+  name: github-abort
+  labels:
+    app: github
+spec:
+  destination:
+    name: github
+  route:
+  - labels:
+      app: github
+  httpFault:
+    abort:
+      percent: 100
+      httpStatus: 400
+  precedence: 1

istio_examples/RouteRule/deploy.sh

@@ -1,5 +1,7 @@
+#!/bin/bash
+
 DIR=$(pwd)
 
 kubectl delete routerule -l app=api
-kubectl apply -f <(istioctl kube-inject -f $DIR/api/routerule.yml)
-kubectl apply -f <(istioctl kube-inject -f $DIR/api/routerule2.yml)
+kubectl apply -f <(istioctl kube-inject -f $DIR/routerule.yml)
+kubectl apply -f <(istioctl kube-inject -f $DIR/routerule2.yml)

istio_examples/Services/api/service.yml

@@ -11,4 +11,4 @@ spec:
   ports:
   - protocol: TCP
     port: 5000
-    name: http
+    name: http

istio_examples/Services/github/service.yml

@@ -11,3 +11,4 @@ spec:
   ports:
   - protocol: TCP
     port: 5000
+    name: http

istio_examples/Services/ui/service.yml

@@ -11,4 +11,4 @@ spec:
   ports:
   - protocol: TCP
     port: 80
-    name: http
+    name: http

istio_examples/Services/ui/src/src/App.js

@@ -19,10 +19,14 @@ class App extends Component {
       headers
     })
       .then((response) => {
-        response.json().then(json => {
-          console.log(json)
-          this.setState({error: false, data: json})
-        })
+        if (response.ok) {
+          response.json().then(json => {
+            console.log(json)
+            this.setState({error: false, data: json})
+          })
+        } else {
+          throw new Error('Network response was not ok.')
+        }
       })
       .catch((err) => this.setState({error: true, data: err.toString()}))
   }