如何使用boto和python从桶中删除s3版本

Question

当我尝试用以下代码删除一个存储桶时：

conn = boto.connect_s3(AWS_ACCESS_KEY_ID, AWS_SECRET_ACCESS_KEY)

print conn.delete_Bucket('BucketNameHere').message

系统告诉我，我试图删除的存储桶不是空的。

这个存储桶里没有任何键（也就是数据项）。但是，它确实有一些版本。

我该如何删除这些版本呢？

我可以通过 bucket.list_versions() 查看版本列表。

在Java中，有一个叫做 deleteVersion 的方法可以用来删除版本。我在这里找到了相关代码：

http://bytecoded.blogspot.com/2011/01/recursive-delete-utility-for-version.html

他用这一行代码来删除版本：

s3.deleteVersion(new DeleteVersionRequest(bucketName, keyName, versionId));

在boto中有没有类似的功能呢？

Answer 1

Boto在1.9c版本之后支持版本控制的存储桶。下面是它的工作原理：

import boto

s3 = boto.connect_s3()

#Create a versioned bucket
bucket = s3.create_bucket("versioned.example.com")
bucket.configure_versioning(True)

#Create a new key and make a few versions
key = bucket.new_key("versioned_object")
key.set_contents_from_string("Version 1")
key.set_contents_from_string("Version 2")

#Try to delete bucket
bucket.delete()   ## FAILS with 409 Conflict

#Delete our key then try to delete our bucket again
bucket.delete_key("versioned_object")
bucket.delete()   ## STILL FAILS with 409 Conflict

#Let's see what's in there
list(bucket.list())   ## Returns empty list []

#What's in there including versions?
list(bucket.list_versions())   ## Returns list of keys and delete markers

#This time delete all versions including delete markers
for version in bucket.list_versions():
    #NOTE we're still using bucket.delete, we're just adding the version_id parameter
    bucket.delete_key(version.name, version_id = version.version_id)

#Now what's in there
list(bucket.list_versions())   ## Returns empty list []

#Ok, now delete the bucket
bucket.delete()   ## SUCCESS!!