[PMS] Persistent storage of policies and type definitions

Policy types and type definitions are stored persistently
to survive a restart of PMS.
Added persistent volume claim.

Change-Id: Ia947bb71a6bdee3a8e576337b2870c54ee3c08f9
Issue-ID: CCSDK-3256
Signed-off-by: PatrikBuhr <patrik.buhr@est.tech>

4 files changed, 124 insertions, 4 deletions

diff --git a/kubernetes/a1policymanagement/templates/deployment.yaml b/kubernetes/a1policymanagement/templates/deployment.yaml
index 822c0e3cb1..0d8399c8b3 100644
--- a/kubernetes/a1policymanagement/templates/deployment.yaml
+++ b/kubernetes/a1policymanagement/templates/deployment.yaml
@@ -19,7 +19,14 @@
 
 kind: Deployment
 apiVersion: apps/v1
-metadata: {{- include "common.resourceMetadata" . | nindent 2 }}
+metadata:
+  name: {{ include "common.fullname" . }}
+  namespace: {{ include "common.namespace" . }}
+  labels:
+    app: {{ include "common.name" . }}
+    chart: "{{ .Chart.Name }}-{{ .Chart.Version }}"
+    release: "{{ include "common.release" . }}"
+    heritage: "{{ .Release.Service }}"
 spec:
   replicas: {{ index .Values.replicaCount }}
   selector: {{- include "common.selectors" . | nindent 4 }}
@@ -101,7 +108,9 @@ spec:
           subPath: application_configuration.json
         - name: config
           mountPath: /opt/app/policy-agent/config/application.yaml
-          subPath: application.yaml
+          subPath: application.yaml   
+        - name: vardata
+          mountPath: "/var/policy-management-service/database"
         resources: {{ include "common.resources" . | nindent 10 }}
       volumes: {{ include "common.certInitializer.volumes" . | nindent 8 }}
         - name: {{ include "common.fullname" . }}-policy-conf-input
@@ -114,3 +123,6 @@ spec:
         - name: config
           emptyDir:
             medium: Memory
+        - name: vardata
+          persistentVolumeClaim:
+            claimName: {{ include "common.fullname" . }}
diff --git a/kubernetes/a1policymanagement/templates/pv.yaml b/kubernetes/a1policymanagement/templates/pv.yaml
new file mode 100644
index 0000000000..904d863b03
--- /dev/null
+++ b/kubernetes/a1policymanagement/templates/pv.yaml
@@ -0,0 +1,42 @@
+{{/*
+################################################################################
+#   Copyright (c) 2021 Nordix 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 and .Values.persistence.enabled (not .Values.persistence.existingClaim) -}}
+{{- if not .Values.persistence.storageClass -}}
+kind: PersistentVolume
+apiVersion: v1
+metadata:
+  name: {{ include "common.fullname" . }}-data
+  namespace: {{ include "common.namespace" . }}
+  labels:
+    app: {{ include "common.name" . }}
+    chart: "{{ .Chart.Name }}-{{ .Chart.Version | replace "+" "_" }}"
+    release: "{{ include "common.release" . }}"
+    heritage: "{{ .Release.Service }}"
+    name: {{ include "common.fullname" . }}
+spec:
+  capacity:
+    storage: {{ .Values.persistence.size}}
+  accessModes:
+    - {{ .Values.persistence.accessMode }}
+  persistentVolumeReclaimPolicy: {{ .Values.persistence.volumeReclaimPolicy }}
+  storageClassName: "{{ include "common.fullname" . }}-data"
+  hostPath:
+    path: {{ .Values.persistence.mountPath }}/{{ include "common.release" . }}/{{ .Values.persistence.mountSubPath }}/app
+{{- end -}}
+{{- end -}}
diff --git a/kubernetes/a1policymanagement/templates/pvc.yaml b/kubernetes/a1policymanagement/templates/pvc.yaml
new file mode 100644
index 0000000000..4183edfdbb
--- /dev/null
+++ b/kubernetes/a1policymanagement/templates/pvc.yaml
@@ -0,0 +1,41 @@
+{{/*
+################################################################################
+#   Copyright (c) 2021 Nordix 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 and .Values.persistence.enabled (not .Values.persistence.existingClaim) -}}
+kind: PersistentVolumeClaim
+apiVersion: v1
+metadata:
+  name: {{ include "common.fullname" . }}
+  namespace: {{ include "common.namespace" . }}
+  labels:
+    app: {{ include "common.name" . }}
+    chart: "{{ .Chart.Name }}-{{ .Chart.Version }}"
+    release: "{{ include "common.release" . }}"
+    heritage: "{{ .Release.Service }}"
+  {{- if .Values.persistence.annotations }}
+  annotations:
+{{ .Values.persistence.annotations | indent 4 }}
+  {{- end }}
+spec:
+  accessModes:
+    - {{ .Values.persistence.accessMode }}
+  resources:
+    requests:
+      storage: {{ .Values.persistence.size }}
+  storageClassName: {{ include "common.fullname" . }}-data
+{{- end -}}
diff --git a/kubernetes/a1policymanagement/values.yaml b/kubernetes/a1policymanagement/values.yaml
index 41a93ee014..08590d891c 100644
--- a/kubernetes/a1policymanagement/values.yaml
+++ b/kubernetes/a1policymanagement/values.yaml
@@ -122,10 +122,10 @@ resources:
   small:
     limits:
       cpu: 2
-      memory: 4Gi
+      memory: 300Mi
     requests:
       cpu: 1
-      memory: 2Gi
+      memory: 150Mi
   large:
     limits:
       cpu: 4
@@ -134,3 +134,28 @@ resources:
       cpu: 2
       memory: 4Gi
   unlimited: {}
+
+## Persist data to a persistent volume
+persistence:
+  enabled: true
+
+  ## A manually managed Persistent Volume and Claim
+  ## Requires persistence.enabled: true
+  ## If defined, PVC must be created manually before volume will be bound
+  # existingClaim:
+  volumeReclaimPolicy: Retain
+
+  ## database data Persistent Volume Storage Class
+  ## If defined, storageClassName: <storageClass>
+  ## If set to "-", storageClassName: "", which disables dynamic provisioning
+  ## If undefined (the default) or set to null, no storageClassName spec is
+  ##   set, choosing the default provisioner.  (gp2 on AWS, standard on
+  ##   GKE, AWS & OpenStack)
+  ##
+  # storageClass: "-"
+  accessMode: ReadWriteOnce
+  size: 2Gi
+  mountPath: /dockerdata-nfs
+  mountSubPath: nonrtric/policymanagementservice
+
+