Reintroducing fs cache.

src/downloader/file_system.py

@@ -172,6 +172,9 @@ def is_file(self, path):
     def is_folder(self, path):
         return self._fs.is_folder(path)
 
+    def precache_is_file_with_folders(self, folders):
+        return self._fs.precache_is_file_with_folders(folders)
+
     def download_target_path(self, path):
         return self._fs.download_target_path(path)
 

src/downloader/online_importer.py

@@ -110,6 +110,9 @@ def _unpack_dbs_data(self, importer_command, full_resync):
 
             db_file_selector = _DatabaseFileSelector(resolved_db, read_only_store, full_resync, file_system, self._logger, self._base_session, self._free_space_reservation)
 
+            self._logger.bench('Precaching files...')
+            file_system.precache_is_file_with_folders(resolved_db.folders.keys())
+
             self._logger.bench('Selecting changed files...')
             changed_files, already_present_files, needed_zips = db_file_selector.select_changed_files()
 
@@ -268,6 +271,7 @@ def _remove_files(self, packages):
             db_importer = _OnlineDatabaseImporter(db, write_only_store, read_only_store, externals, config, file_system, self._file_downloader_factory, self._logger, self._base_session, self._external_drives_repository)
 
             db_importer.remove_deleted_files()
+            file_system.print_debug()
 
     def _finish_stores(self, packages):
         for db, config, store, _externals, _changed_files, _already_present_files, _needed_zips, filtered_zip_data, zip_summaries in packages: