Istio integration (#421)

This the very first step for fission to integrate with Istio, which is an open platform to connect, manage, and secure microservices. With Istio, users are able to monitor functions usage and trace requests latency through dashboards. For more information, please visit http://fission.io/docs/

charts/fission-all/templates/deployment.yaml

@@ -6,6 +6,9 @@ metadata:
   labels:
     name: fission-function
     chart: "{{ .Chart.Name }}-{{ .Chart.Version }}"
+    {{- if .Values.enableIstio }}
+    istio-injection: enabled
+    {{- end }}
 
 ---
 apiVersion: v1
@@ -15,6 +18,9 @@ metadata:
   labels:
     name: fission-builder
     chart: "{{ .Chart.Name }}-{{ .Chart.Version }}"
+    {{- if .Values.enableIstio }}
+    istio-injection: enabled
+    {{- end }}
 
 ---
 apiVersion: v1
@@ -130,6 +136,11 @@ spec:
         imagePullPolicy: {{ .Values.pullPolicy }}
         command: ["/fission-bundle"]
         args: ["--controllerPort", "8888"]
+        env:
+          - name: FISSION_FUNCTION_NAMESPACE
+            value: "{{ .Values.functionNamespace }}"
+          - name: ENABLE_ISTIO
+            value: "{{ .Values.enableIstio }}"
         readinessProbe:
           httpGet:
             path: "/healthz"
@@ -223,6 +234,8 @@ spec:
           value: "{{ .Values.pullPolicy }}"
         - name: RUNTIME_IMAGE_PULL_POLICY
           value: "{{ .Values.pullPolicy }}"
+        - name: ENABLE_ISTIO
+          value: "{{ .Values.enableIstio }}"
         readinessProbe:
           httpGet:
             path: "/healthz"
@@ -263,6 +276,8 @@ spec:
           value: "{{ .Values.fetcherImage }}:{{ .Values.fetcherImageTag }}"
         - name: FETCHER_IMAGE_PULL_POLICY
           value: "{{ .Values.pullPolicy }}"
+        - name: ENABLE_ISTIO
+          value: "{{ .Values.enableIstio }}"
       serviceAccount: fission-svc
 
 ---

charts/fission-all/templates/post-install-job.yaml

@@ -22,6 +22,10 @@ spec:
       labels:
         release: {{ .Release.Name }}
         app: {{ template "name" . }}
+      annotations:
+        {{- if .Values.enableIstio }}
+        "sidecar.istio.io/inject": "false"
+        {{- end }}
     spec:
       restartPolicy: Never
       containers:

charts/fission-all/values.yaml

@@ -41,6 +41,9 @@ functionNamespace: fission-function
 ## the release namespace)
 builderNamespace: fission-builder
 
+## Enable istio integration
+enableIstio: false
+
 ## Logger config
 logger:
   influxdbAdmin: "admin"

charts/fission-core/templates/deployment.yaml

@@ -6,6 +6,9 @@ metadata:
   labels:
     name: fission-function
     chart: "{{ .Chart.Name }}-{{ .Chart.Version }}"
+    {{- if .Values.enableIstio }}
+    istio-injection: enabled
+    {{- end }}
 
 ---
 apiVersion: v1
@@ -15,6 +18,9 @@ metadata:
   labels:
     name: fission-builder
     chart: "{{ .Chart.Name }}-{{ .Chart.Version }}"
+    {{- if .Values.enableIstio }}
+    istio-injection: enabled
+    {{- end }}
 
 ---
 apiVersion: v1
@@ -130,6 +136,11 @@ spec:
         imagePullPolicy: {{ .Values.pullPolicy }}
         command: ["/fission-bundle"]
         args: ["--controllerPort", "8888"]
+        env:
+          - name: FISSION_FUNCTION_NAMESPACE
+            value: "{{ .Values.functionNamespace }}"
+          - name: ENABLE_ISTIO
+            value: "{{ .Values.enableIstio }}"
         readinessProbe:
           httpGet:
             path: "/healthz"
@@ -221,6 +232,8 @@ spec:
           value: "{{ .Values.fetcherImage }}:{{ .Values.fetcherImageTag }}"
         - name: FETCHER_IMAGE_PULL_POLICY
           value: "{{ .Values.pullPolicy }}"
+        - name: ENABLE_ISTIO
+          value: "{{ .Values.enableIstio }}"
         readinessProbe:
           httpGet:
             path: "/healthz"
@@ -261,6 +274,8 @@ spec:
           value: "{{ .Values.fetcherImage }}:{{ .Values.fetcherImageTag }}"
         - name: FETCHER_IMAGE_PULL_POLICY
           value: "{{ .Values.pullPolicy }}"
+        - name: ENABLE_ISTIO
+          value: "{{ .Values.enableIstio }}"
       serviceAccount: fission-svc
 
 ---

charts/fission-core/templates/post-install-job.yaml

@@ -22,6 +22,10 @@ spec:
       labels:
         release: {{ .Release.Name }}
         app: {{ template "name" . }}
+      annotations:
+        {{- if .Values.enableIstio }}
+        "sidecar.istio.io/inject": "false"
+        {{- end }}
     spec:
       restartPolicy: Never
       containers:

charts/fission-core/values.yaml

@@ -38,6 +38,9 @@ functionNamespace: fission-function
 ## the release namespace)
 builderNamespace: fission-builder
 
+## Enable istio integration
+enableIstio: false
+
 ## Persist data to a persistent volume.
 persistence:
   enabled: true