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| from collections.abc import Generator | |
| from contextlib import closing | |
| import oss2 as aliyun_s3 | |
| from flask import Flask | |
| from extensions.storage.base_storage import BaseStorage | |
| class AliyunStorage(BaseStorage): | |
| """Implementation for aliyun storage. | |
| """ | |
| def __init__(self, app: Flask): | |
| super().__init__(app) | |
| app_config = self.app.config | |
| self.bucket_name = app_config.get('ALIYUN_OSS_BUCKET_NAME') | |
| oss_auth_method = aliyun_s3.Auth | |
| region = None | |
| if app_config.get('ALIYUN_OSS_AUTH_VERSION') == 'v4': | |
| oss_auth_method = aliyun_s3.AuthV4 | |
| region = app_config.get('ALIYUN_OSS_REGION') | |
| oss_auth = oss_auth_method(app_config.get('ALIYUN_OSS_ACCESS_KEY'), app_config.get('ALIYUN_OSS_SECRET_KEY')) | |
| self.client = aliyun_s3.Bucket( | |
| oss_auth, | |
| app_config.get('ALIYUN_OSS_ENDPOINT'), | |
| self.bucket_name, | |
| connect_timeout=30, | |
| region=region, | |
| ) | |
| def save(self, filename, data): | |
| self.client.put_object(filename, data) | |
| def load_once(self, filename: str) -> bytes: | |
| with closing(self.client.get_object(filename)) as obj: | |
| data = obj.read() | |
| return data | |
| def load_stream(self, filename: str) -> Generator: | |
| def generate(filename: str = filename) -> Generator: | |
| with closing(self.client.get_object(filename)) as obj: | |
| while chunk := obj.read(4096): | |
| yield chunk | |
| return generate() | |
| def download(self, filename, target_filepath): | |
| self.client.get_object_to_file(filename, target_filepath) | |
| def exists(self, filename): | |
| return self.client.object_exists(filename) | |
| def delete(self, filename): | |
| self.client.delete_object(filename) | |