mirror of
https://github.com/langgenius/dify.git
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89 lines
2.7 KiB
Python
89 lines
2.7 KiB
Python
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import os
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import shutil
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from collections.abc import Generator
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from flask import Flask
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from extensions.storage.base_storage import BaseStorage
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class LocalStorage(BaseStorage):
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"""Implementation for local storage.
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"""
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def __init__(self, app: Flask):
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super().__init__(app)
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folder = self.app.config.get('STORAGE_LOCAL_PATH')
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if not os.path.isabs(folder):
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folder = os.path.join(app.root_path, folder)
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self.folder = folder
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def save(self, filename, data):
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if not self.folder or self.folder.endswith('/'):
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filename = self.folder + filename
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else:
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filename = self.folder + '/' + filename
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folder = os.path.dirname(filename)
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os.makedirs(folder, exist_ok=True)
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with open(os.path.join(os.getcwd(), filename), "wb") as f:
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f.write(data)
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def load_once(self, filename: str) -> bytes:
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if not self.folder or self.folder.endswith('/'):
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filename = self.folder + filename
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else:
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filename = self.folder + '/' + filename
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if not os.path.exists(filename):
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raise FileNotFoundError("File not found")
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with open(filename, "rb") as f:
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data = f.read()
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return data
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def load_stream(self, filename: str) -> Generator:
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def generate(filename: str = filename) -> Generator:
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if not self.folder or self.folder.endswith('/'):
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filename = self.folder + filename
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else:
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filename = self.folder + '/' + filename
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if not os.path.exists(filename):
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raise FileNotFoundError("File not found")
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with open(filename, "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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return generate()
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def download(self, filename, target_filepath):
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if not self.folder or self.folder.endswith('/'):
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filename = self.folder + filename
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else:
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filename = self.folder + '/' + filename
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if not os.path.exists(filename):
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raise FileNotFoundError("File not found")
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shutil.copyfile(filename, target_filepath)
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def exists(self, filename):
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if not self.folder or self.folder.endswith('/'):
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filename = self.folder + filename
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else:
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filename = self.folder + '/' + filename
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return os.path.exists(filename)
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def delete(self, filename):
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if not self.folder or self.folder.endswith('/'):
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filename = self.folder + filename
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else:
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filename = self.folder + '/' + filename
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if os.path.exists(filename):
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os.remove(filename)
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