Improve entrypoint to handle backup restore on first start only (#77)

---------

Co-authored-by: Sergey Nikolaev <[email protected]>

README.md

@@ -341,10 +341,10 @@ Inside this folder, you will find your backup.
 
 
 To restore your full backup on startup, you need to mount your backup to the `/docker-entrypoint-initdb.d` folder. 
+
 Please note that you should mount the content of your backup, not the backup folder itself (e.g., `backup-202307..`).
 
-The restore process temporarily prevents the regular `searchd` start. 
-If you wish to avoid this behavior, you can set the flag `-e START_AFTER_RESTORE=true`.
+The backup will be restored if the data directory is empty. Otherwise, it will be skipped, even if it's mounted on the second launch or any other time. Once the backup is restored, the daemon will start.
 
 ### Creating SQL dumps
 

docker-entrypoint.sh

@@ -241,26 +241,32 @@ _main() {
   fi
 
   BACKUP_INIT_FOLDER="/docker-entrypoint-initdb.d"
+  INITED=""
+  for f in /var/lib/manticore/*; do
+    INITED=1
+    break
+  done 
 
   if [ -f "${BACKUP_INIT_FOLDER}/versions.json" ]; then
+    if [ -n "$INITED" ]; then
+      echo "Warning: Backup is available for restore, but it's being skipped because it's already initialized or the data directory is not empty."
+    else
+      if [ ! -s "/usr/bin/manticore-executor" ]; then
+          echo -e "${RED}Can't run manticore-backup. Use env. var. EXTRA=1 to install the missing packages.${NC}"
+          exit 1
+      fi
 
-    if [ ! -s /usr/bin/manticore-executor ]; then
-        echo -e "${RED}Can't run manticore-backup. Use env. var. EXTRA=1 to install the missing packages.${NC}"
+      # Check if manticore-backup is installed
+      if ! command -v manticore-backup > /dev/null; then
+        echo -e "${RED}manticore-backup isn't installed${NC}"
         exit 1
-    fi
-
-    [[ $(which manticore-backup) ]] || \
-      { echo -e "${RED}Manticore backup isn't installed${NC}"; exit 1; }
-
-    find ${BACKUP_INIT_FOLDER}/config -type f -exec sh -c 'rm -f "${1#/docker-entrypoint-initdb.d/config}"' sh {} \;
-    find ${BACKUP_INIT_FOLDER}/state -type f -exec sh -c 'rm -f "${1#/docker-entrypoint-initdb.d/state}"' sh {} \;
+      fi
 
-    manticore-backup --version
-    manticore-backup --force --backup-dir='/' --restore='docker-entrypoint-initdb.d'
+      find ${BACKUP_INIT_FOLDER}/config -type f -exec sh -c 'rm -f "${1#/docker-entrypoint-initdb.d/config}"' sh {} \;
+      find ${BACKUP_INIT_FOLDER}/state -type f -exec sh -c 'rm -f "${1#/docker-entrypoint-initdb.d/state}"' sh {} \;
 
-    if [ -z "$START_AFTER_RESTORE" ]; then
-        echo -e "${GREEN}Dump successfully restored.${NC} Run container again without mounting anything to docker-entrypoint-initdb.d"
-        exit 0
+      manticore-backup --version
+      manticore-backup --force --backup-dir='/' --restore='docker-entrypoint-initdb.d'
     fi
   fi