桶(Bucket)是 TOS 的全局唯一的命名空间,相当于数据的容器,用来储存对象(Object)数据。TOS 中权限控制通过 IAM Policy、Bucket Policy、桶和对象ACL实现,其中桶策略和 ACL 都是基于 TOS 资源的权限控制策略,桶策略相较于桶 ACL 具备更灵活的权限配置。本文介绍如何设置、获取和删除桶的授权策略(Policy)。
注意
tos:PutBucketPolicy
权限,具体操作请参见权限配置指南。以下代码用于设置桶 bucket-test
的桶策略。
import json import os import tos # 从环境变量获取 AK 和 SK 信息。 ak = os.getenv('TOS_ACCESS_KEY') sk = os.getenv('TOS_SECRET_KEY') # your endpoint 和 your region 填写Bucket 所在区域对应的Endpoint。# 以华北2(北京)为例,your endpoint 填写 tos-cn-beijing.volces.com,your region 填写 cn-beijing。 endpoint = "your endpoint" region = "your region" bucket_name = "bucket-test" try: # 创建 TosClientV2 对象,对桶和对象的操作都通过 TosClientV2 实现 client = tos.TosClientV2(ak, sk, endpoint, region) # 配置所有用户具备ListBucket的Policy权限 policy = { "Statement": [ { "Sid": "internal public", "Effect": "Allow", "Action": ["tos:ListBucket"], "Principal": "*", "Resource": [ "trn:tos:::{}/*".format(bucket_name), "trn:tos:::{}".format(bucket_name), ], } ] } client.put_bucket_policy(bucket_name, policy=json.dumps(policy)) except tos.exceptions.TosClientError as e: # 操作失败,捕获客户端异常,一般情况为非法请求参数或网络异常 print('fail with client error, message:{}, cause: {}'.format(e.message, e.cause)) except tos.exceptions.TosServerError as e: # 操作失败,捕获服务端异常,可从返回信息中获取详细错误信息 print('fail with server error, code: {}'.format(e.code)) # request id 可定位具体问题,强烈建议日志中保存 print('error with request id: {}'.format(e.request_id)) print('error with message: {}'.format(e.message)) print('error with http code: {}'.format(e.status_code)) print('error with ec: {}'.format(e.ec)) print('error with request url: {}'.format(e.request_url)) except Exception as e: print('fail with unknown error: {}'.format(e))
注意
获取桶策略,您必须具备 tos:GetBucketPolicy
权限,具体操作请参见权限配置指南。
以下代码用于获取桶 bucket-test
的桶策略。
import json import os import tos # 从环境变量获取 AK 和 SK 信息。 ak = os.getenv('TOS_ACCESS_KEY') sk = os.getenv('TOS_SECRET_KEY') # your endpoint 和 your region 填写Bucket 所在区域对应的Endpoint。# 以华北2(北京)为例,your endpoint 填写 tos-cn-beijing.volces.com,your region 填写 cn-beijing。 endpoint = "your endpoint" region = "your region" bucket_name = "bucket-test" try: # 创建 TosClientV2 对象,对桶和对象的操作都通过 TosClientV2 实现 client = tos.TosClientV2(ak, sk, endpoint, region) resp = client.get_bucket_policy(bucket_name) policy_json = json.loads(resp.policy) print('Get policy text: {}'.format(policy_json)) except tos.exceptions.TosClientError as e: # 操作失败,捕获客户端异常,一般情况为非法请求参数或网络异常 print('fail with client error, message:{}, cause: {}'.format(e.message, e.cause)) except tos.exceptions.TosServerError as e: # 操作失败,捕获服务端异常,可从返回信息中获取详细错误信息 print('fail with server error, code: {}'.format(e.code)) # request id 可定位具体问题,强烈建议日志中保存 print('error with request id: {}'.format(e.request_id)) print('error with message: {}'.format(e.message)) print('error with http code: {}'.format(e.status_code)) print('error with ec: {}'.format(e.ec)) print('error with request url: {}'.format(e.request_url)) except Exception as e: print('fail with unknown error: {}'.format(e))
注意
删除桶策略,您必须具备 tos:DeleteBucketPolicy
权限,具体操作请参见权限配置指南。
以下代码用于删除桶 bucket-test
的桶策略。
import json import os import tos # 从环境变量获取 AK 和 SK 信息。 ak = os.getenv('TOS_ACCESS_KEY') sk = os.getenv('TOS_SECRET_KEY') # your endpoint 和 your region 填写Bucket 所在区域对应的Endpoint。# 以华北2(北京)为例,your endpoint 填写 tos-cn-beijing.volces.com,your region 填写 cn-beijing。 endpoint = "your endpoint" region = "your region" bucket_name = "bucket-test" try: # 创建 TosClientV2 对象,对桶和对象的操作都通过 TosClientV2 实现 client = tos.TosClientV2(ak, sk, endpoint, region) client.delete_bucket_policy(bucket_name) except tos.exceptions.TosClientError as e: # 操作失败,捕获客户端异常,一般情况为非法请求参数或网络异常 print('fail with client error, message:{}, cause: {}'.format(e.message, e.cause)) except tos.exceptions.TosServerError as e: # 操作失败,捕获服务端异常,可从返回信息中获取详细错误信息 print('fail with server error, code: {}'.format(e.code)) # request id 可定位具体问题,强烈建议日志中保存 print('error with request id: {}'.format(e.request_id)) print('error with message: {}'.format(e.message)) print('error with http code: {}'.format(e.status_code)) print('error with ec: {}'.format(e.ec)) print('error with request url: {}'.format(e.request_url)) except Exception as e: print('fail with unknown error: {}'.format(e))
关于存储桶策略的更多信息,请参见存储桶授权策略管理。