added check_railsserver_available function to postgresql backup

containers/zammad-postgresql/backup.sh

@@ -1,6 +1,6 @@
 #!/bin/bash
 
-function backup {
+function zammad_backup {
   TIMESTAMP="$(date +'%Y%m%d%H%M%S')"
 
   echo "${TIMESTAMP} - backuping zammad..."
@@ -15,12 +15,17 @@ function backup {
   pg_dump --dbname=postgresql://postgres@zammad-postgresql:5432/zammad_production | gzip > ${BACKUP_DIR}/${TIMESTAMP}_zammad_db.psql.gz
 }
 
-if [ "$1" = 'zammad-backup' ]; then
+function check_railsserver_available {
   # wait for zammad process coming up
   until (echo > /dev/tcp/zammad-railsserver/3000) &> /dev/null; do
     echo "backup waiting for zammads railsserver to be ready..."
     sleep 2
   done
+}
+
+if [ "$1" = 'zammad-backup' ]; then
+
+  check_railsserver_available
 
   while true; do
     backup
@@ -31,11 +36,7 @@ if [ "$1" = 'zammad-backup' ]; then
 fi
 
 if [ "$1" = 'zammad-backup-once' ]; then
-  # wait for zammad process coming up
-  until (echo > /dev/tcp/zammad-railsserver/3000) &> /dev/null; do
-    echo "backup waiting for zammads railsserver to be ready..."
-    sleep 2
-  done
+  check_railsserver_available
 
   backup
 fi