#
# Licensed to the Apache Software Foundation (ASF) under one or more
# contributor license agreements.  See the NOTICE file distributed with
# this work for additional information regarding copyright ownership.
# The ASF licenses this file to You 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.invoker.containerFactory.kubernetes.isolateUserActions }}

# Default deny all ingress
apiVersion: networking.k8s.io/v1
kind: NetworkPolicy
metadata:
  name: {{ .Release.Name }}-default-no-ingress-np
  labels:
{{ include "openwhisk.label_boilerplate" .| indent 4 }}
spec:
  podSelector: {}
  policyTypes:
  - Ingress
---

# Backend control plane pods only accept connections from non-user-action-pods
apiVersion: networking.k8s.io/v1
kind: NetworkPolicy
metadata:
  name: {{ .Release.Name }}-backend-np
  labels:
{{ include "openwhisk.label_boilerplate" .| indent 4 }}
spec:
  podSelector:
    matchExpressions:
      - {key: user-action-pod, operator: DoesNotExist}
  policyTypes:
  - Ingress
  ingress:
  - from:
    - podSelector:
        matchExpressions:
          - {key: user-action-pod, operator: DoesNotExist}
---

# Frontend pods (nginx, controller, apigateway) accept connections from anyone
apiVersion: networking.k8s.io/v1
kind: NetworkPolicy
metadata:
  name: {{ .Release.Name }}-frontend-np
  labels:
{{ include "openwhisk.label_boilerplate" .| indent 4 }}
spec:
  podSelector:
    matchExpressions:
      - {key: name, operator: In, values: ["{{ .Release.Name }}-controller", "{{ .Release.Name }}-apigateway", "{{ .Release.Name }}-nginx"]}
  policyTypes:
  - Ingress
  ingress:
  - {}
---

# User action pods will only accept connections from invokers
apiVersion: networking.k8s.io/v1
kind: NetworkPolicy
metadata:
  name: {{ .Release.Name }}-actions-allow-invoker-np
  labels:
{{ include "openwhisk.label_boilerplate" .| indent 4 }}
spec:
  podSelector:
    matchExpressions:
      - {key: user-action-pod, operator: In, values: ["true"]}
  policyTypes:
  - Ingress
  ingress:
  - from:
    - podSelector:
        matchLabels:
          name: {{ .Release.Name }}-invoker
{{- end }}