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| import os | |
| import shutil | |
| from collections.abc import Generator | |
| from pathlib import Path | |
| from flask import current_app | |
| from configs import dify_config | |
| from extensions.storage.base_storage import BaseStorage | |
| class LocalFsStorage(BaseStorage): | |
| """Implementation for local filesystem storage.""" | |
| def __init__(self): | |
| super().__init__() | |
| folder = dify_config.STORAGE_LOCAL_PATH | |
| if not os.path.isabs(folder): | |
| folder = os.path.join(current_app.root_path, folder) | |
| self.folder = folder | |
| def _build_filepath(self, filename: str) -> str: | |
| """Build the full file path based on the folder and filename.""" | |
| if not self.folder or self.folder.endswith("/"): | |
| return self.folder + filename | |
| else: | |
| return self.folder + "/" + filename | |
| def save(self, filename, data): | |
| filepath = self._build_filepath(filename) | |
| folder = os.path.dirname(filepath) | |
| os.makedirs(folder, exist_ok=True) | |
| Path(os.path.join(os.getcwd(), filepath)).write_bytes(data) | |
| def load_once(self, filename: str) -> bytes: | |
| filepath = self._build_filepath(filename) | |
| if not os.path.exists(filepath): | |
| raise FileNotFoundError("File not found") | |
| return Path(filepath).read_bytes() | |
| def load_stream(self, filename: str) -> Generator: | |
| filepath = self._build_filepath(filename) | |
| if not os.path.exists(filepath): | |
| raise FileNotFoundError("File not found") | |
| with open(filepath, "rb") as f: | |
| while chunk := f.read(4096): # Read in chunks of 4KB | |
| yield chunk | |
| def download(self, filename, target_filepath): | |
| filepath = self._build_filepath(filename) | |
| if not os.path.exists(filepath): | |
| raise FileNotFoundError("File not found") | |
| shutil.copyfile(filepath, target_filepath) | |
| def exists(self, filename): | |
| filepath = self._build_filepath(filename) | |
| return os.path.exists(filepath) | |
| def delete(self, filename): | |
| filepath = self._build_filepath(filename) | |
| if os.path.exists(filepath): | |
| os.remove(filepath) | |