###################################################################################
#  ============LICENSE_START=======================================================
#
#  ================================================================================
#  Copyright (C) 2020 Hcl Technologies Limited.
#  ================================================================================
#  Licensed under the Apache License, Version 2.0 (the "License");
#  you may not use this file except in compliance with the License.
#  You may obtain a copy of the License at
#
#       http://www.apache.org/licenses/LICENSE-2.0
#
#  Unless required by applicable law or agreed to in writing, software
#  distributed under the License is distributed on an "AS IS" BASIS,
#  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
#  See the License for the specific language governing permissions and
#  limitations under the License.
# ============LICENSE_END=========================================================
###################################################################################

apiVersion: apps/v1
kind: StatefulSet
metadata:
  name: {{ .Values.rediscluster.name }}
spec:
  serviceName: {{ .Values.service.name }}
  replicas: {{ .Values.rediscluster.replicaCount }}
  selector:
    matchLabels:
      app.kubernetes.io/name: {{ .Values.rediscluster.name }}
      app.kubernetes.io/instance: {{ .Release.Name }}
  template:
    metadata:
      labels:
        app.kubernetes.io/name: {{ .Values.rediscluster.name }}
        app.kubernetes.io/instance: {{ .Release.Name }}
    spec:
      topologySpreadConstraints:
       - maxSkew: 1
         topologyKey: kubernetes.io/hostname
         whenUnsatisfiable: {{ .Values.topology.policyUnstisfiable }}
         #whenUnsatisfiable: ScheduleAnyway
         #whenUnsatisfiable: DoNotSchedule
         labelSelector:
           matchLabels:
             app.kubernetes.io/name: {{ .Values.rediscluster.name }}
             app.kubernetes.io/instance: {{ .Release.Name }}
      containers:
      - name: {{ .Values.container.name }}
        image: "{{ .Values.image.repository }}:{{ .Values.image.tag }}"
        imagePullPolicy: {{ .Values.image.pullPolicy }}
        ports:
        - containerPort: 6379
          name: client
        - containerPort: 16379
          name: gossip
        command: ["/conf/update-node.sh", "redis-server", "/conf/redis.conf"]
        env:
        - name: POD_IP
          valueFrom:
            fieldRef:
              fieldPath: status.podIP
        volumeMounts:
        - name: conf
          mountPath: /conf
          readOnly: false
        - name: data
          mountPath: /data
          readOnly: false
      volumes:
      - name: conf
        configMap:
          name: {{ .Values.rediscluster.name }}-cm
          defaultMode: 0755
  volumeClaimTemplates:
  - metadata:
      name: data
      labels:
        app.kubernetes.io/name: {{ .Values.rediscluster.name }}
        app.kubernetes.io/instance: {{ .Release.Name }}
    spec:
      accessModes: [ "ReadWriteOnce" ]
      resources:
        requests:
          storage: {{ .Values.volume.storage }}