Refactor Docker backups into modular pipeline

methods/30-smb.sh

@@ -0,0 +1,29 @@
+#!/usr/bin/env bash
+# Copy the local backup tree to an already-mounted SMB share.
+set -Eeuo pipefail
+SCRIPT_DIR="$(cd -- "$(dirname -- "${BASH_SOURCE[0]}")" && pwd -P)"
+. "$SCRIPT_DIR/../lib/common.sh"
+DRY_RUN=0; FORCE=0
+while [[ $# -gt 0 ]]; do
+  case "$1" in
+    --dry-run) DRY_RUN=1 ;; --force) FORCE=1 ;;
+    -h|--help) echo "Usage: ${0##*/} [--dry-run] [--force]"; exit 0 ;;
+    *) die "Unknown option: $1" 2 ;;
+  esac
+  shift
+done
+if ! is_true "$SMB_ENABLED" && (( FORCE == 0 )); then log SKIP "SMB method is disabled"; exit 0; fi
+[[ -n "$SMB_MOUNT" ]] || die "SMB_MOUNT is not configured"
+require_command rsync
+require_command mountpoint
+[[ -d "$BACKUP_ROOT" ]] || die "Backup root not found: $BACKUP_ROOT"
+[[ -d "$SMB_MOUNT" ]] || die "SMB mount does not exist: $SMB_MOUNT"
+mountpoint -q "$SMB_MOUNT" || die "SMB path is not a mounted filesystem: $SMB_MOUNT"
+destination="${SMB_MOUNT%/}"
+is_true "$SMB_HOST_SUBDIR" && destination="$destination/$BACKUP_HOSTNAME"
+(( DRY_RUN )) || mkdir -p "$destination"
+read -r -a rsync_args <<<"$SMB_RSYNC_ARGS"
+(( DRY_RUN )) && rsync_args+=(--dry-run)
+log INFO "Copying backups to $destination"
+rsync "${rsync_args[@]}" "$BACKUP_ROOT/" "$destination/"
+log DONE "SMB backup method completed"