iOS AWS v2 S3传输管理器必须使用指定的端点 [英] iOS AWS v2 S3 Transfer Manager must use specified endpoint

问题描述

我正在开发一个使用AWS作为后端的iOS应用程序。由于我希望用户能够在全球范围内使用，因此我需要切换应用下载照片的位置，以提高延迟性能。我在EUWest1中创建了一个S3存储桶，在APNorthEast1中创建了另一个存储桶。 Yosuke在这里说（ https://forums.aws.amazon.com/ message.jspa？messageID = 586581＃586581 ），您可以将AWSServiceManager.defaultServiceManager（）的默认配置从一个区域更改为另一个区域，以防止出错。

I am developing an iOS app using AWS as its backend. Since I expect users to be world wide, I need to switch where the app should download photos in order to increase latency performance. I have created a S3 bucket in EUWest1 and the other in APNorthEast1. As Yosuke said here (https://forums.aws.amazon.com/message.jspa?messageID=586581#586581), you can change the default configuration of AWSServiceManager.defaultServiceManager() from one region to another in order to prevent the error.

但是，即使我按照他的提示，我仍然有相同的错误结果。错误是：

But, I still have the same error result even if I followed his tip. Error is:

错误域= com.amazonaws.AWSS3ErrorDomain代码= 0操作无法完成。（com.amazonaws。 AWSS3ErrorDomain错误0.）UserInfo = 0x14fb7720 {RequestId = D708XXX8E1EDBXXX，Endpoint = bucket-ap-northeast-1.s3-ap-northeast-1.amazonaws.com，Message =您尝试访问的存储区必须使用指定的端点。请将以后的所有请求发送到此端点。，HostId = xxxY31S3yFhpssQe1EsfipWWLw =，Code = PermanentRedirect，Bucket = bucket-ap-northeast-1}

Error Domain=com.amazonaws.AWSS3ErrorDomain Code=0 "The operation couldn’t be completed. (com.amazonaws.AWSS3ErrorDomain error 0.)" UserInfo=0x14fb7720 {RequestId=D708XXX8E1EDBXXX, Endpoint=bucket-ap-northeast-1.s3-ap-northeast-1.amazonaws.com, Message=The bucket you are attempting to access must be addressed using the specified endpoint. Please send all future requests to this endpoint., HostId=xxxY31S3yFhpssQe1EsfipWWLw=, Code=PermanentRedirect, Bucket=bucket-ap-northeast-1}

这是我的代码：

var credentialsProvider = AWSCognitoCredentialsProvider.credentialsWithRegionType(kCognitoRegionType, accountId: kAWSAccountID, identityPoolId: kCognitoPoolID, unauthRoleArn: kCognitoRoleUnauth, authRoleArn: kCognitoRoleAuth)
var serviceConfiguration = AWSServiceConfiguration(region: AWSRegionType.APNortheast1, credentialsProvider: credentialsProvider)
AWSServiceManager.defaultServiceManager().setDefaultServiceConfiguration(serviceConfiguration)
var transferManager = AWSS3TransferManager.defaultS3TransferManager()
transferManager.download(downloadRequest)

欢迎任何建议！谢谢！

推荐答案

AWS v2的答案

虽然看起来像如果您通过使用代码中的区域正确设置 AWSServiceConfiguration ，那么您仍然使用默认的 AWSS3TransferManager （ var transferManager = AWSS3TransferManager.defaultS3TransferManager（））。而是使用 docs 将传输管理器的配置设置为您已经创建的 serviceConfiguration 。

Although it seems as if you properly set the AWSServiceConfiguration by using the region in your code, you're still using the default AWSS3TransferManager (var transferManager = AWSS3TransferManager.defaultS3TransferManager()). Instead, use the custom init specified in the docs to set that transfer manager's configuration to the serviceConfiguration you've already created.

AWS v1的答案

如果您创建的EUWest1和APNorthEast1等非美国标准的存储桶，则不能使用典型的路径样式语法（ http://s3.amazonaws.com 或不需要指定的端点）来访问桶。

If you create a bucket like EUWest1 and APNorthEast1 that is not US Standard, you cannot use typical path-style syntax ("http://s3.amazonaws.com" or no specified endpoint required) to access the bucket.

假设 downloadRequest 是一个 S3GetObjectRequest ，之前执行transferManager的下载时，您应该设置 S3GetObjectRequest 的端点以匹配存储区域。

Assuming downloadRequest is an S3GetObjectRequest, before performing the transferManager's download, you should set the endpoint of the S3GetObjectRequest to match the bucket region.

对于EUWest1，您可以将端点设置为：

For EUWest1, you can set the endpoint to:

[downloadRequest setEndpoint:@"s3-eu-west-1.amazonaws.com.com"];

对于APNorthEast1，您可以将端点设置为：

For APNorthEast1, you can set the endpoint to:

[downloadRequest setEndpoint:@"s3-ap-northeast-1.amazonaws.com"];

可以使用整个端点列表这里

The entire list of endpoints is available here

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