java - 以编程方式在 AWS S3 上启用版本控制

我在使用 AWS SDK iOS v2.1.1 以编程方式启用现有存储桶的版本控制时遇到问题。错误是 -[NSNull _fastCharacterContents]: unrecognized selector sent to instance ...。我创建错误的代码片段是通过执行 putBucketVersioning 方法产生的:

    AWSS3VersioningConfiguration *conf = [AWSS3VersioningConfiguration new];
    conf.status = AWSS3BucketVersioningStatusEnabled;

    AWSS3PutBucketVersioningRequest *versionRequest = [AWSS3PutBucketVersioningRequest new];
    versionRequest.bucket = createBucketReq.bucket;
    versionRequest.versioningConfiguration = conf;

    [[[AWSS3 S3ForKey:key] putBucketVersioning:versionRequest] continueWithBlock:^id(BFTask *task) {

        return task;
}

我可能在创建 AWSS3PutBucketVersioningRequest 请求的过程中遗漏了一个论点，但我找不到任何可以为我指明正确方向的示例或文档。非常欢迎任何关于 Java、Cocoa 或 Swift 的建议。干杯，特隆德

更新:

根据评论，我在启用 AWSLogging verbose 后包含完整方法和错误输出。

-(BFTask*) enableVersioningOfBucketNSString*)bucket regionNSInteger) region {

    [self setupCredentialsForRegion:region];
    NSString *key = [NSString stringWithFormat"regionkey%li",region];

    AWSS3VersioningConfiguration *conf = [AWSS3VersioningConfiguration new];
    conf.status = AWSS3BucketVersioningStatusEnabled;

    AWSS3PutBucketVersioningRequest *versionRequest =  [AWSS3PutBucketVersioningRequest new];
    versionRequest.bucket = bucket;
    versionRequest.versioningConfiguration = conf;
    NSLog(@"Config %@",versionRequest);

   return [[[AWSS3 S3ForKey:key] putBucketVersioning:versionRequest] continueWithBlock:^id(BFTask *task) {
        NSLog(@"ut bucket versioning %@ - %@", task, task.result);
        return task;
    }];
} 

日志消息:

    2015-06-06 12:09:41.822 connectS3[50137:6337899] Config <AWSS3PutBucketVersioningRequest: 0x600000082350> {
    bucket = testbucket;
    versioningConfiguration = "<AWSS3VersioningConfiguration: 0x600000024bc0> {\n    MFADelete = 0;\n    status = 1;\n}";}
    2015-06-06 12:09:41.832 connectS3[50137:6337899] -[NSNull _fastCharacterContents]: unrecognized selector sent to instance 0x7fff7724c210

更新 2

下图显示了堆栈跟踪，因为当我使用断点并单步执行每个方法调用时，错误消息刚刚出现。

更新 3 我如下所述设置我的凭据。除了启用版本控制之外，这适用于我与 S3 连接的所有其他方法。

        AWSStaticCredentialsProvider *credentialsProvider = [[AWSStaticCredentialsProvider alloc ]
                                                           initWithAccessKey:keychainStore[ACCESS_KEY_ID]
                                                             secretKey:keychainStore[SECRET_KEY]];

        AWSServiceConfiguration *configuration = [[AWSServiceConfiguration alloc] initWithRegion:region
                                                           credentialsProvider:credentialsProvider];

        /* One credential configuration for each region **/
        NSString *key = [NSString stringWithFormat"regionkey%li",region];
        [AWSS3 registerS3WithConfiguration:configuration forKey:key];

        /* Default credentialsProvider **/
        [AWSServiceManager defaultServiceManager].defaultServiceConfiguration = configuration;

感谢您的帮助!

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Best Answer-推荐答案

我可以确认这是当前 AWS 移动开发工具包中的一个错误。我们将在未来的版本中修复它。感谢您的报告。

对于解决方法，您可以将以下行添加到您的 AWSS3VersioningConfiguration 代码中:

AWSS3VersioningConfiguration *conf = [AWSS3VersioningConfiguration new];
    conf.status = AWSS3BucketVersioningStatusEnabled;
    conf.MFADelete = AWSS3MFADeleteDisabled; // <------ Add this line
...

关于java - 以编程方式在 AWS S3 上启用版本控制，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/30677529/