CODEWITHSUNDEEP
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rolandforbes
rolandforbes

Reputation: 55

Can't get S3 Uploads to work in Xcode 10.2/Swift

I am in the process of building an iOS App, and I've been stuck on S3 uploads for a few days. I have been following the documentation provided here:

https://aws-amplify.github.io/docs/ios/storage.

When I hit this function it appears as if everything worked in Xcode, and it returns no errors. However, when I go look in my S3 bucket I see that the image was never uploaded. Here is my upload function (I put the credential info in here as well):

I think my source of confusion is coming from getting credentials from Cognito. I feel like I need Cognito credentials to access the AWS Transfer Utility, and the code below seems like it should be doing that?

@IBAction func uploadData() {

    let pool = AWSCognitoIdentityUserPool(forKey: "UserPool")
    let credentialsProvider = AWSCognitoCredentialsProvider(regionType: .USEast2, identityPoolId: "us-east-2:XXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXX", identityProviderManager:pool)
    let serviceConfiguration = AWSServiceConfiguration(region: .USEast2, credentialsProvider: credentialsProvider)
    let userPoolConfiguration = AWSCognitoIdentityUserPoolConfiguration(clientId: "XXXX", clientSecret: "XXXX", poolId: "us-east-XXXX")

    let tu = AWSS3TransferUtilityConfiguration()

    AWSS3TransferUtility.register(with: serviceConfiguration!, transferUtilityConfiguration: tu, forKey: "UserPool")

    let transferUtility:(AWSS3TransferUtility?) = AWSS3TransferUtility.s3TransferUtility(forKey: "UserPool")
    AWSServiceManager.default()?.defaultServiceConfiguration = serviceConfiguration


    let data = self.imageView?.image?.pngData() // Data to be uploaded

    let expression = AWSS3TransferUtilityUploadExpression()
    expression.progressBlock = {(task, progress) in
        DispatchQueue.main.async(execute: {
            // Do something e.g. Update a progress bar.
        })
    }

    var completionHandler: AWSS3TransferUtilityUploadCompletionHandlerBlock?
    completionHandler = { (task, error) -> Void in
        DispatchQueue.main.async(execute: {
            // Do something e.g. Alert a user for transfer completion.
            // On failed uploads, `error` contains the error object.
        })
    }

    transferUtility!.uploadData(data as! Data,
                               bucket: "mybucket-env",
                               key: "YourFileName",
                               contentType: "image/png",
                               expression: expression,
                               completionHandler: completionHandler).continueWith {
                                (task) -> AnyObject? in
                                if let error = task.error {
                                    print("Error: \(error.localizedDescription)")
                                }

                                if let _ = task.result {
                                    // Do something with uploadTask.
                                }
                                return nil;
    }
}

Upvotes: 0

Views: 407

Answers (1)

Lawmicha
Lawmicha

Reputation: 157

The documentation has been updated: https://aws-amplify.github.io/docs/ios/storage

You can achieve the same functionality using AWS Amplify where you can use

  1. Amplify CLI to provision S3 and cognito resources

  2. Add configuration files to your app, awsconfiguration.json and amplifyconfiguration.json.

  3. Install the dependencies

pod 'AmplifyPlugins/AWSS3StoragePlugin'
pod 'AWSMobileClient', '~> 2.12.0'

  1. Initialize AWSMobileClient and Amplify

  2. Amplify.Storage.uploadData()

Upvotes: 1

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