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61 lines
2.2 KiB
Python
61 lines
2.2 KiB
Python
import base64
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import hashlib
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from collections.abc import Generator
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from baidubce.auth.bce_credentials import BceCredentials
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from baidubce.bce_client_configuration import BceClientConfiguration
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from baidubce.services.bos.bos_client import BosClient
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from flask import Flask
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from extensions.storage.base_storage import BaseStorage
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class BaiduObsStorage(BaseStorage):
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"""Implementation for Baidu OBS storage."""
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def __init__(self, app: Flask):
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super().__init__(app)
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app_config = self.app.config
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self.bucket_name = app_config.get("BAIDU_OBS_BUCKET_NAME")
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client_config = BceClientConfiguration(
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credentials=BceCredentials(
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access_key_id=app_config.get("BAIDU_OBS_ACCESS_KEY"),
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secret_access_key=app_config.get("BAIDU_OBS_SECRET_KEY"),
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),
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endpoint=app_config.get("BAIDU_OBS_ENDPOINT"),
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)
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self.client = BosClient(config=client_config)
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def save(self, filename, data):
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md5 = hashlib.md5()
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md5.update(data)
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content_md5 = base64.standard_b64encode(md5.digest())
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self.client.put_object(
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bucket_name=self.bucket_name, key=filename, data=data, content_length=len(data), content_md5=content_md5
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)
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def load_once(self, filename: str) -> bytes:
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response = self.client.get_object(bucket_name=self.bucket_name, key=filename)
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return response.data.read()
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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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response = self.client.get_object(bucket_name=self.bucket_name, key=filename).data
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while chunk := response.read(4096):
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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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self.client.get_object_to_file(bucket_name=self.bucket_name, key=filename, file_name=target_filepath)
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def exists(self, filename):
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res = self.client.get_object_meta_data(bucket_name=self.bucket_name, key=filename)
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if res is None:
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return False
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return True
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def delete(self, filename):
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self.client.delete_object(bucket_name=self.bucket_name, key=filename)
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