mirror of
https://github.com/hwchase17/langchain
synced 2024-11-02 09:40:22 +00:00
46 lines
1.6 KiB
Python
46 lines
1.6 KiB
Python
import os
|
|
import tempfile
|
|
from typing import Any, Iterator
|
|
|
|
from langchain_core.documents import Document
|
|
|
|
from langchain_community.document_loaders.base import BaseLoader
|
|
from langchain_community.document_loaders.unstructured import UnstructuredFileLoader
|
|
|
|
|
|
class TencentCOSFileLoader(BaseLoader):
|
|
"""Load from `Tencent Cloud COS` file."""
|
|
|
|
def __init__(self, conf: Any, bucket: str, key: str):
|
|
"""Initialize with COS config, bucket and key name.
|
|
:param conf(CosConfig): COS config.
|
|
:param bucket(str): COS bucket.
|
|
:param key(str): COS file key.
|
|
"""
|
|
self.conf = conf
|
|
self.bucket = bucket
|
|
self.key = key
|
|
|
|
def lazy_load(self) -> Iterator[Document]:
|
|
"""Load documents."""
|
|
try:
|
|
from qcloud_cos import CosS3Client
|
|
except ImportError:
|
|
raise ImportError(
|
|
"Could not import cos-python-sdk-v5 python package. "
|
|
"Please install it with `pip install cos-python-sdk-v5`."
|
|
)
|
|
|
|
# initialize a client
|
|
client = CosS3Client(self.conf)
|
|
with tempfile.TemporaryDirectory() as temp_dir:
|
|
file_path = f"{temp_dir}/{self.bucket}/{self.key}"
|
|
os.makedirs(os.path.dirname(file_path), exist_ok=True)
|
|
# Download the file to a destination
|
|
client.download_file(
|
|
Bucket=self.bucket, Key=self.key, DestFilePath=file_path
|
|
)
|
|
loader = UnstructuredFileLoader(file_path)
|
|
# UnstructuredFileLoader not implement lazy_load yet
|
|
return iter(loader.load())
|