add helm charts

backing-services/mssql/files/scripts/entrypoint/restore.sh

@@ -0,0 +1,32 @@
+#!/bin/bash
+
+{{- if .Values.backup.enabled }}
+export database=$1;
+export now=$2;
+
+if [ -z "$database" ]; then
+  echo ERROR Database name is not specified at the 1st argument
+  exit 1
+fi
+if [ -z "$now" ]; then
+  echo "ERROR Backup time is not specified as 2nd argument"
+  exit 1
+fi
+
+backuppath={{ .Values.backup.persistence.mount }}/$database-$now.bak
+
+if [ -f "${backuppath}" ];then
+  echo INFO - DB $database Snapshot found! Restoring...
+else
+  echo ERROR - No Snapshot Found under $backuppath
+  exit 1;
+fi
+
+sqlcmd -C \
+  -S {{ include "mssql.primary.fullname" . }}.{{ include "common.names.namespace" $ }}.svc.{{ .Values.clusterDomain }} \
+  -U sa -P "$MSSQL_SA_PASSWORD" \
+  -e -Q "RESTORE DATABASE $database FROM DISK = '$backuppath'"
+{{- else }}
+printf "WARN No restore script available because"
+echo " .Values.backup.enabled is falsy when you deployed this helm chart"
+{{- end }}