检查成功的S3复制操作？ [英] Checking for succesful S3 copy operation?

问题描述

我想使用亚马逊S3的Java API来实现移动操作。

I'm trying to implement a move operation using the Amazon S3 Java API.

我遇到的问题是，<一个href="http://docs.aws.amazon.com/AWSJavaSDK/latest/javadoc/com/amazonaws/services/s3/model/CopyObjectResult.html"相对=nofollow> CopyObjectResult 通过对象返回的<一个href="http://docs.aws.amazon.com/AWSJavaSDK/latest/javadoc/com/amazonaws/services/s3/AmazonS3Client.html#copyObject%28java.lang.String,%20java.lang.String,%20java.lang.String,%20java.lang.String%29"相对=nofollow> AmazonS3Client.copyObject 方法似乎并不有关于wiether操作成功与否的明确指标。

The problem I am having is that the CopyObjectResult object returned by the AmazonS3Client.copyObject method doesn't seem to have a clear indicator about wiether the operation was successful or not.

由于此操作，我将要删除的文件后，我想，以确保操作成功。

Given that after this operation I am going to be deleting a file, I'd want to make sure that the operation was successful.

有什么建议？

推荐答案

这是我落得这样做，

def s3 = createS3Client(credentials)
def originalMeta = s3.getObjectMetadata(originalBucketName, key)
s3.copyObject(originalBucketName, key, newBucketName, newKey)
def newMeta = s3.getObjectMetadata(newBucketName, newKey)

// check that md5 matches to confirm this operation was successful
return originalMeta.contentMD5 == newMeta.contentMD5

请注意，这是Groovy的code，但它是非常类似于如何在Java code会的工作。

Note that this is Groovy code, but it is extremely similar to how the Java code would work.

我不喜欢做两个额外的操作，以检查元数据，因此，如果有无论如何要做到这一点更有效地让我知道。

I don't like having to make two additional operations to check the metadata, so if there is anyway to do this more efficiently let me know.

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