apiVersion: argoproj.io/v1alpha1
kind: Rollout
metadata:
  name: {{ template "helm-guestbook.fullname" . }}
  namespace: {{ template "helm-guestbook.fullname" . }}
  labels:
    app: {{ template "helm-guestbook.name" . }}
    chart: {{ template "helm-guestbook.chart" . }}
    release: {{ .Release.Name }}
    heritage: {{ .Release.Service }}
spec:
  replicas: {{ .Values.replicaCount }}
  revisionHistoryLimit: 3
  selector:
    matchLabels:
      app: {{ template "helm-guestbook.name" . }}
      release: {{ .Release.Name }}
  template:
    metadata:
      {{- with .Values.deployment.annotations }}
      annotations:
        {{- toYaml . | nindent 8 }}
      {{- end }}
      labels:
        app: {{ template "helm-guestbook.name" . }}
        release: {{ .Release.Name }}
    spec:
      containers:
        - name: {{ .Chart.Name }}
          image: "{{ .Values.image.repository }}:{{ .Values.image.tag }}"
          imagePullPolicy: {{ .Values.image.pullPolicy }}
          ports:
            - name: http
              containerPort: 80
              protocol: TCP
          livenessProbe:
            httpGet:
              path: /
              port: http
          readinessProbe:
            httpGet:
              path: /
              port: http
          resources:
{{ toYaml .Values.resources | indent 12 }}
    {{- with .Values.nodeSelector }}
      nodeSelector:
{{ toYaml . | indent 8 }}
    {{- end }}
    {{- with .Values.affinity }}
      affinity:
{{ toYaml . | indent 8 }}
    {{- end }}
    {{- with .Values.tolerations }}
      tolerations:
{{ toYaml . | indent 8 }}
    {{- end }}
  minReadySeconds: 30
  strategy:
    canary: #Indicates that the rollout should use the Canary strategy
      maxSurge: "25%"
      maxUnavailable: 0
      canaryService: guestbook-canary-service
      stableService: {{ template "helm-guestbook.fullname" . }}
      trafficRouting:
        nginx:
          # The referenced ingress will be injected with a custom action annotation, directing
          # the Nginx to split traffic between the canary and stable Service using headers
          stableIngress: {{ template "helm-guestbook.fullname" . }}
          annotationPrefix: nginx.ingress.kubernetes.io 
          additionalIngressAnnotations:  
            canary-by-header: tenantID
            canary-by-header-pattern: 10|11|12|13 # tenantID values
      steps:
      - analysis:
          templates:
          - templateName: success-rate
            clusterScope: true
          args:
          - name: service-name
            value: {{ template "helm-guestbook.fullname" . }}
      # Pauses indefinitely until manually resumed
      - pause: {}