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87 lines
2.7 KiB
Python
87 lines
2.7 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 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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Path(os.path.join(os.getcwd(), filename)).write_bytes(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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data = Path(filename).read_bytes()
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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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