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