Swift UIDocumentPickerViewController document upload into AWS S3 - ios

Question

UIDocumentPickerViewController to pick some document and upload into AWS S3 with help of TransferUtility. Here, While uploading I need to show upload file name, status(progressive loader %),size into tableview cell. If i upload multiple files tableview cell need to show multiple cell with loading status.
Issues:
I have done UIDocumentPickerViewController to pick some documents and get those document URL,name,size,etc. but I don't know how to use (or) pass those values into upload part.
// MARK - File Storage Access
public func documentPicker(_ controller: UIDocumentPickerViewController, didPickDocumentAt url: URL) {
let fileurl: URL = url as URL
let filename = url.lastPathComponent
let fileextension = url.pathExtension
let filedata = url.dataRepresentation
print("DATA: \(filedata)","URL: \(fileurl)", "NAME: \(filename)", "EXTENSION: \(fileextension)")}
//Need to store above values and use it to below functions
Below upload part how to interact with tableview cell.
transferUtility.uploadData(data,bucket: S3BucketName,key: name,contentType: "text/plain",expression: expression,completionHandler: completionHandler).continueWith { (task) -> AnyObject? in
if let error = task.error {
print("Error: \(error.localizedDescription)")
DispatchQueue.main.async {
cells.statusLabel_util.text = "Failed"
print("Failed")
}
}
if let _ = task.result {
DispatchQueue.main.async {
print("Upload Starting!")
}
// Do something with uploadTask.
}
return nil;
}

Answer 1

You can upload file and track progress with this code
if let uploadRequest = AWSS3TransferManagerUploadRequest(){
uploadRequest.bucket = "your bucket"
uploadRequest.key = fileName
//uploadRequest.acl = AWSS3ObjectCannedACL.publicRead
uploadRequest.body = fileUrl
uploadRequest.uploadProgress = {(bytesSent: Int64, totalBytesSent: Int64, totalBytesExpectedToSend: Int64) -> Void in
DispatchQueue.main.async(execute: {() -> Void in
//Update progress
})
}
if let transferManager = AWSS3TransferManager.default(){
transferManager.upload(uploadRequest).continue(with: AWSExecutor.mainThread(), with: { (task) -> Any? in
if let error = task.error as NSError? {
if error.domain == AWSS3TransferManagerErrorDomain, let code = AWSS3TransferManagerErrorType(rawValue: error.code) {
switch code {
case .cancelled, .paused:
break
default:
break
//print("Error uploading: \(uploadRequest?.key) Error: \(error)")
}
} else {
//print("Error uploading: \(uploadRequest?.key) Error: \(error)")
}
return nil
}
return nil
})
}
}