Question

我似乎无法理解如何最好地处理几个AWS SDK iOS v2方法的 BFTask （Bolts框架）返回对象。我正在尝试获取我的存储桶所在区域的名称。有人建议如何根据我从以下代码成功接收的 locationConstraint 信息来做到这一点吗？或者有一种通用的方法来理解task.result对象包含的内容吗？

AWSS3TransferManagerUploadRequest *uploadRequest = [AWSS3TransferManagerUploadRequest new];
AWSS3 *myS3 = [[AWSS3 alloc] initWithConfiguration:self.configurationS3];
AWSS3GetBucketLocationRequest *locReq = [AWSS3GetBucketLocationRequest new];
locReq.bucket=@"testAWS";

[[myS3 getBucketLocation:locReq] continueWithExecutor:[BFExecutor mainThreadExecutor] withBlock:^id(BFTask *task) {
    if(task.error != nil){
        NSLog(@"%s Location not found: [%@]",__PRETTY_FUNCTION__, task.error);
    } else {
        NSLog(@"Location found: [%@] - %li", task.result, [task.result locationConstraint]);
    }
    return nil;  
}];

此外，如果有人对教程/示例提出建议，以便最好地理解BFTask，这将有所帮助。谢谢你的帮助。干杯，特隆德 PS。我还在AWS support site上提出了这个问题。

Answer 1

以下是确定存储区位置的代码段：

AWSS3 *s3 = [AWSS3 defaultS3];
AWSS3GetBucketLocationRequest *getBucketLocationRequest = [AWSS3GetBucketLocationRequest new];
getBucketLocationRequest.bucket = testBucketNameGeneral;

[[s3 getBucketLocation:getBucketLocationRequest] continueWithBlock:^id(BFTask *task) {
    if(task.error != nil){
        XCTAssertNil(task.error, @"The request failed. error: [%@]", task.error);
    }

    AWSS3GetBucketLocationOutput *getBucketLocationOutput = task.result;
    XCTAssertEqual(getBucketLocationOutput.locationConstraint, AWSS3BucketLocationConstraintBlank);
    switch (getBucketLocationOutput.locationConstraint) {
        case AWSS3BucketLocationConstraintBlank:
            NSLog(@"Classic Region");
            break;
        case AWSS3BucketLocationConstraintEU:
            NSLog(@"EU");
            break;
        case AWSS3BucketLocationConstraintEUWest1:
            NSLog(@"eu-west-1");
            break;
        case AWSS3BucketLocationConstraintUSWest1:
            NSLog(@"us-west-1");
            break;
        case AWSS3BucketLocationConstraintUSWest2:
            NSLog(@"us-west-2");
            break;
        case AWSS3BucketLocationConstraintAPSoutheast1:
            NSLog(@"ap-southeast-1");
            break;
        case AWSS3BucketLocationConstraintAPSoutheast2:
            NSLog(@"ap-southeast-2");
            break;
        case AWSS3BucketLocationConstraintAPNortheast1:
            NSLog(@"ap-northeast-1");
        case AWSS3BucketLocationConstraintSAEast1:
            NSLog(@"sa-east-1");
            break;

        case AWSS3BucketLocationConstraintUnknown:
        default:
            // Error
            break;
    }
    return nil;
}];

但是，SDK中存在错误，getBucketLocationOutput.locationConstraint始终为AWSS3BucketLocationConstraintUnknown。我们正在努力修复此问题。

Bolts-iOS GitHub repo对如何使用螺栓有很好的指导。

希望这有帮助，

<强>更新

AWS Mobile SDK for iOS 2.0.4已发布。此更新修复了此问题，现在它返回正确的locationConstraint。

使用AWSS3GetBucketLocationRequest获取存储区域

1 个答案: