add hanamgr option to backup

hanamgr.sh

@@ -1,5 +1,5 @@
 #!/bin/bash
-# Version: 1.4.0
+# Version: 1.5.0
 # Author: Tomi Eckert
 # ==============================================================================
 # HANA Database Manager Menu (hanamgr.sh)
@@ -349,6 +349,75 @@ do_copy() {
     rm -rf "$temp_export_dir"
 }
 
+do_backup() {
+    echo -e "\n\033[1m=== Backup Tenant ===\033[0m"
+    read -p "Enter Target Directory Path: " target_path
+    
+    local max_threads=$(nproc --all 2>/dev/null || echo 1)
+    local half_threads=$((max_threads / 2))
+    [[ $half_threads -lt 1 ]] && half_threads=1
+    
+    read -p "Number of threads for compression (default: $half_threads, max: $max_threads): " threads
+    threads=${threads:-$half_threads}
+    
+    read -p "Compress output as tar.gz? (y/N): " compress
+
+    if [[ -z "$GLOBAL_USER_KEY" || -z "$target_path" ]]; then
+        echo -e "\033[31m[❌] Error: Key and Path are required.\033[0m"
+        return
+    fi
+
+    # Get tenant name
+    local tenant_query="SELECT DATABASE_NAME FROM SYS.M_DATABASES;"
+    local tenant_name
+    tenant_name=$("$HDBSQL_CMD" -U "$GLOBAL_USER_KEY" "$tenant_query" 2>/dev/null | tail -n +2 | head -n 1 | tr -d '[:space:]' | tr -d '"')
+    
+    if [[ -z "$tenant_name" ]]; then
+        echo -e "\033[31m[❌] Error: Could not retrieve HANA tenant name.\033[0m"
+        return
+    fi
+
+    local timestamp=$(date +%Y%m%d_%H%M%S)
+    local backup_target_dir="$target_path"
+    local archive_file=""
+
+    if [[ "$compress" =~ ^[Yy]$ ]]; then
+        backup_target_dir=$(mktemp -d "${target_path}/${tenant_name}_backup_${timestamp}_XXXXXXXX")
+        archive_file="${target_path}/${tenant_name}_backup_${timestamp}.tar.gz"
+        echo "[ℹ️] Using temporary backup directory: ${backup_target_dir}"
+    fi
+
+    mkdir -p "$backup_target_dir"
+    local backup_path_prefix="${backup_target_dir}/backup_${tenant_name}_${timestamp}"
+    
+    echo -e "\n[💾] Starting backup of tenant '${tenant_name}'..."
+    local query="BACKUP DATA USING FILE ('${backup_path_prefix}')"
+    
+    if execute_sql "$GLOBAL_USER_KEY" "$query"; then
+        echo -e "\033[32m[✅] Successfully initiated tenant backup.\033[0m"
+        
+        if [[ "$compress" =~ ^[Yy]$ ]]; then
+            echo "[📦] Compressing backup to ${archive_file}..."
+            
+            if command -v pigz &> /dev/null; then
+                tar -I "pigz -p $threads" -cf "$archive_file" -C "$backup_target_dir" .
+            else
+                tar -czf "$archive_file" -C "$backup_target_dir" .
+            fi
+            
+            if [ $? -eq 0 ]; then
+                echo -e "\033[32m[✅] Compression successful.\033[0m"
+                rm -rf "$backup_target_dir"
+            else
+                echo -e "\033[31m[❌] Error: Compression failed.\033[0m"
+            fi
+        fi
+    else
+        echo -e "\033[31m[❌] Error: Backup failed.\033[0m"
+        if [[ "$compress" =~ ^[Yy]$ ]]; then rm -rf "$backup_target_dir"; fi
+    fi
+}
+
 do_rename_db() {
     echo -e "\n\033[1m=== Rename Database (Company Name) ===\033[0m"
     select_schema "$GLOBAL_USER_KEY"
@@ -400,9 +469,10 @@ while true; do
     echo "4) Copy Schema"
     echo "5) Drop Schema"
     echo "6) Rename Database (Update Company Name)"
-    echo "7) Quit"
+    echo "7) Backup Tenant"
+    echo "8) Quit"
     echo
-    read -p "Please select an option (1-7): " choice
+    read -p "Please select an option (1-8): " choice
     
     case $choice in
         1)
@@ -424,6 +494,9 @@ while true; do
             do_rename_db
             ;;
         7)
+            do_backup
+            ;;
+        8)
             echo "[👋] Exiting."
             exit 0
             ;;