feat: support persistent volume

Add persistent volume for sqlite3 backend

README.md

@@ -97,8 +97,7 @@ be the options passed via the `--set` flag of the `helm install` command.
 
 ## Missing features
 
-1. Add Persistent Volume for the SQLite database
-2. Support postgres, maria and mysql database directly as helm dependency if as
+1. Support postgres, maria and mysql database directly as helm dependency if as
    `DATABASE_DRIVER` an other instead of `sqlite` has been selected.
    Alternatively can be passed a completely custom string to establish a
    database connection, when the database is running outside the cluster.

templates/deployment.yaml

@@ -38,7 +38,24 @@ spec:
               protocol: TCP
           resources:
             {{- toYaml .Values.resources | nindent 12 }}
-
+          {{- if eq (default "sqlite3" .Values.config.DRONE_DATABASE_DRIVER) "sqlite3" }}
+          volumeMounts:
+          - name: data
+            mountPath: {{ default "/data/database.sqlite" .Values.config.DRONE_DATABASE_DATASOURCE | dir }}
+          {{- end }}
+      {{- if and (eq (default "sqlite3" .Values.config.DRONE_DATABASE_DRIVER) "sqlite3") .Values.persistence.existingClaim }}
+      volumes:
+      - name: data
+        persistentVolumeClaim:
+      {{- with .Values.persistence.existingClaim }}
+          claimName: {{ tpl . $ }}
+      {{- end }}
+      {{- else if and (.Values.config.DRONE_DATABASE_DRIVER | default "sqlite3" | eq "sqlite3") (not .Values.persistence.existingClaim) }}
+      volumes:
+      - name: data
+        persistentVolumeClaim:
+          claimName: drone
+      {{- end }}
       {{- with .Values.nodeSelector }}
       nodeSelector:
         {{- toYaml . | nindent 8 }}

templates/persistentVolumeClaim.yaml

@@ -0,0 +1,17 @@
+{{ if and (eq (default "sqlite3" .Values.config.DRONE_DATABASE_DRIVER) "sqlite3") (not .Values.persistence.existingClaim) }}
+apiVersion: v1
+kind: PersistentVolumeClaim
+metadata:
+  name: drone
+spec:
+  accessModes:
+  {{- range .Values.persistence.accessModes }}
+    - {{ . | quote }}
+  {{- end }}
+  resources:
+    requests:
+      storage: {{ .Values.persistence.size | quote }}
+  {{- if .Values.persistence.storageClass }}
+  storageClassName: {{ .Values.persistence.storageClass | quote }}
+  {{- end }}
+{{- end }}

values.yaml

@@ -27,7 +27,7 @@ securityContext: {}
   # runAsNonRoot: true
   # runAsUser: 1000
 
-config:
+config: {}
   # DRONE_BITBUCKET_CLIENT_ID
   # String value. Configures the Bitbucket OAuth client id. This is used to
   # authorize access to Bitbucket on behalf of a Drone user.
@@ -507,3 +507,14 @@ nodeSelector: {}
 tolerations: []
 
 affinity: {}
+
+# persistence is only required when config.DATABASE_DRIVER is not sqlite3 or
+# undefined.
+persistence:
+  # existingClaim:
+  size: 5Gi
+  accessModes:
+  - ReadWriteOnce
+  labels: {}
+  annotation: {}
+  # storageClass: