add backup multiple schemas

backup/backup.conf

@@ -36,4 +36,4 @@ COMPRESS_TENANT=true
 # --- Target Identifiers ---
 
 # The name of the schema to be exported when BACKUP_TYPE is 'schema' or 'all'.
-SCHEMA_NAME="MYSCHEMA"
+SCHEMA_NAMES="MYSCHEMA"

backup/backup.sh

@@ -3,8 +3,8 @@
 # ==============================================================================
 # SAP HANA Backup Script
 #
-# Performs schema exports and/or tenant backups for a SAP HANA database.
+# Performs schema exports for one or more schemas and/or tenant backups for a
-# Designed to be executed via a cronjob.
+# SAP HANA database. Designed to be executed via a cronjob.
 # Reads all settings from the backup.conf file in the same directory.
 # ==============================================================================
 
@@ -38,41 +38,42 @@ fi
 # --- Functions ---
 
 # Performs a binary export of a specific schema.
+# Accepts the schema name as its first argument.
 perform_schema_export() {
-    echo "⬇️  Starting schema export for '${SCHEMA_NAME}'..."
+    local schema_name="$1"
+    if [[ -z "$schema_name" ]]; then
+        echo "   ❌ Error: No schema name provided to perform_schema_export function."
+        return 1
+    fi
+
+    echo "⬇️  Starting schema export for '${schema_name}'..."
 
     local timestamp
     timestamp=$(date +%Y%m%d_%H%M%S)
     local export_base_dir="${BACKUP_BASE_DIR}/schema"
-    local export_path="${export_base_dir}/${SCHEMA_NAME}_${timestamp}"
+    local export_path="${export_base_dir}/${schema_name}_${timestamp}"
     local query_export_path="$export_path" # Default path for the EXPORT query
 
-    # NEW: If compression is enabled, export to a temporary directory
     if [[ "$COMPRESS_SCHEMA" == "true" ]]; then
-        export_path="${export_base_dir}/tmp/${SCHEMA_NAME}_${timestamp}"
+        export_path="${export_base_dir}/tmp/${schema_name}_${timestamp}"
         query_export_path="$export_path"
         echo "   ℹ️ Compression enabled. Using temporary export path: ${export_path}"
     fi
 
-    local archive_file="${export_base_dir}/${SCHEMA_NAME}_${timestamp}.tar.gz"
+    local archive_file="${export_base_dir}/${schema_name}_${timestamp}.tar.gz"
 
-    # Create the target directory if it doesn't exist
     mkdir -p "$(dirname "$export_path")"
 
-    # Construct and execute the EXPORT query
+    local query="EXPORT \"${schema_name}\".\"*\" AS BINARY INTO '${query_export_path}' WITH REPLACE THREADS ${THREADS};"
-    local query="EXPORT \"${SCHEMA_NAME}\".\"*\" AS BINARY INTO '${query_export_path}' WITH REPLACE THREADS ${THREADS};"
 
-    # We redirect stdout and stderr to /dev/null for cleaner cron logs.
     "$HDBSQL_PATH" -U "$USER_KEY" "$query" > /dev/null 2>&1
     local exit_code=$?
 
     if [[ "$exit_code" -eq 0 ]]; then
-        echo "   ✅ Successfully exported schema '${SCHEMA_NAME}'."
+        echo "   ✅ Successfully exported schema '${schema_name}'."
 
-        # NEW: Conditional compression logic
         if [[ "$COMPRESS_SCHEMA" == "true" ]]; then
             echo "   🗜️  Compressing exported files..."
-            # Use -C to change directory, ensuring the archive doesn't contain the 'tmp' path
             tar -czf "$archive_file" -C "$(dirname "$export_path")" "$(basename "$export_path")"
             local tar_exit_code=$?
 
@@ -80,7 +81,6 @@ perform_schema_export() {
                 echo "   ✅ Successfully created archive '${archive_file}'."
                 echo "   🧹 Cleaning up temporary directory..."
                 rm -rf "$export_path"
-                # Clean up the tmp parent if it's empty
                 rmdir --ignore-fail-on-non-empty "$(dirname "$export_path")"
                 echo "   ✨ Cleanup complete."
             else
@@ -90,10 +90,24 @@ perform_schema_export() {
             echo "   ℹ️ Compression disabled. Raw export files are located at '${export_path}'."
         fi
     else
-        echo "   ❌ Error: Failed to export schema '${SCHEMA_NAME}' (hdbsql exit code: ${exit_code})."
+        echo "   ❌ Error: Failed to export schema '${schema_name}' (hdbsql exit code: ${exit_code})."
     fi
 }
 
+# NEW: Loops through the schemas in the config file and runs an export for each.
+run_all_schema_exports() {
+    if [[ -z "$SCHEMA_NAMES" ]]; then
+        echo "   ⚠️  Warning: SCHEMA_NAMES variable is not set in config. Skipping schema export."
+        return
+    fi
+
+    echo "🔎 Found schemas to export: ${SCHEMA_NAMES}"
+    for schema in $SCHEMA_NAMES; do
+        perform_schema_export "$schema"
+        echo "--------------------------------------------------"
+    done
+}
+
 # Performs a full backup of the tenant database.
 perform_tenant_backup() {
     echo "⬇️  Starting tenant backup..."
@@ -104,7 +118,6 @@ perform_tenant_backup() {
     local backup_path_prefix
     local backup_target_dir
 
-    # NEW: Determine backup path based on compression setting
     if [[ "$COMPRESS_TENANT" == "true" ]]; then
         backup_target_dir="${backup_base_dir}/tmp"
         backup_path_prefix="${backup_target_dir}/backup_${timestamp}"
@@ -114,25 +127,19 @@ perform_tenant_backup() {
         backup_path_prefix="${backup_target_dir}/backup_${timestamp}"
     fi
 
-    # Create the target directory if it doesn't exist
     mkdir -p "$backup_target_dir"
 
-    # The USER_KEY must be configured to connect to the desired tenant database.
     local query="BACKUP DATA USING FILE ('${backup_path_prefix}')"
 
-    # We redirect stdout and stderr to /dev/null for cleaner cron logs.
     "$HDBSQL_PATH" -U "$USER_KEY" "$query" > /dev/null 2>&1
     local exit_code=$?
 
     if [[ "$exit_code" -eq 0 ]]; then
         echo "   ✅ Successfully initiated tenant backup with prefix '${backup_path_prefix}'."
 
-        # NEW: Conditional compression logic
         if [[ "$COMPRESS_TENANT" == "true" ]]; then
             local archive_file="${backup_base_dir}/backup_${timestamp}.tar.gz"
             echo "   🗜️  Compressing backup files..."
-            # The backup creates multiple files starting with the prefix. We compress the whole temp dir.
-            # Using -C and '.' ensures we archive the contents of the directory, not the directory itself.
             tar -czf "$archive_file" -C "$backup_target_dir" .
             local tar_exit_code=$?
 
@@ -154,19 +161,17 @@ perform_tenant_backup() {
 
 echo "⚙️  Starting HANA backup process..."
 
-# Ensure the base directory exists
 mkdir -p "$BACKUP_BASE_DIR"
 
 case "$BACKUP_TYPE" in
     schema)
-        perform_schema_export
+        run_all_schema_exports
         ;;
     tenant)
         perform_tenant_backup
         ;;
     all)
-        perform_schema_export
+        run_all_schema_exports
-        echo "" # Add a newline for better readability
         perform_tenant_backup
         ;;
     *)