# Copyright 2022-present Open Networking Foundation
#
# 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.

{{- if .Values.networkPolicy.enabled }}
kind: NetworkPolicy
apiVersion: {{ template "networkPolicy.apiVersion" . }}
metadata:
  name: {{ template "redis.fullname" . }}
  namespace: {{ .Release.Namespace | quote }}
  labels:
    app: {{ template "redis.name" . }}
    chart: {{ template "redis.chart" . }}
    release: {{ .Release.Name }}
    heritage: {{ .Release.Service }}
spec:
  podSelector:
    matchLabels:
      app: {{ template "redis.name" . }}
      release: {{ .Release.Name }}
  {{- if .Values.global.redis.cluster.enabled }}
  policyTypes:
    - Ingress
    - Egress
  egress:
    # Allow dns resolution
    - ports:
        - port: 53
          protocol: UDP
    # Allow outbound connections to other cluster pods
    - ports:
        - port: {{ .Values.redisPort }}
        {{- if .Values.global.redis.sentinel.enabled }}
        - port: {{ .Values.sentinel.port }}
        {{- end }}
      to:
        - podSelector:
            matchLabels:
              app: {{ template "redis.name" . }}
              release: {{ .Release.Name }}
  {{- end }}
  ingress:
    # Allow inbound connections
    - ports:
        - port: {{ .Values.redisPort }}
        {{- if .Values.global.redis.sentinel.enabled }}
        - port: {{ .Values.sentinel.port }}
        {{- end }}
      {{- if not .Values.networkPolicy.allowExternal }}
      from:
        - podSelector:
            matchLabels:
              {{ template "redis.fullname" . }}-client: "true"
        - podSelector:
            matchLabels:
              app: {{ template "redis.name" . }}
              release: {{ .Release.Name }}
        {{- if .Values.networkPolicy.ingressNSMatchLabels }}
        - namespaceSelector:
            matchLabels:
              {{- range $key, $value := .Values.networkPolicy.ingressNSMatchLabels }}
              {{ $key | quote }}: {{ $value | quote }}
              {{- end }}
          {{- if .Values.networkPolicy.ingressNSPodMatchLabels }}
          podSelector:
            matchLabels:
              {{- range $key, $value := .Values.networkPolicy.ingressNSPodMatchLabels }}
              {{ $key | quote }}: {{ $value | quote }}
              {{- end }}
          {{- end }}
        {{- end }}
        {{- end }}
    {{- if .Values.metrics.enabled }}
    # Allow prometheus scrapes for metrics
    - ports:
        - port: 9121
    {{- end }}
{{- end }}