Using DynamoDB -> Resource not found - ios

Question

In order to set up a system on AWS where one can create and use user accounts from an iOS app, I recently followed this tutorial which uses AWSMobileClient, AWSAuthCore and AWSAuthUI.
I got up something working where I can create accounts and log in and out.
Now I would like to make use of DynamoDB to allow the user to store something. For that, I have tried to integrate DynamoDB code that I have working in another app. But obviously the two apps environment are not quite the same, so it does not work as I would like it to.
Here is the code for the DynamoDB data that I want to handle:
import Foundation
import AWSDynamoDB
#objcMembers
class DynamoDBData: AWSDynamoDBObjectModel, AWSDynamoDBModeling {
var _message,_timeStamp,_user: String?
class func dynamoDBTableName() -> String {
return "DynamoDBData"
}
class func hashKeyAttribute() -> String {
return "_timeStamp"
}
class func rangeKeyAttribute() -> String {
return "_user"
}
override class func jsonKeyPathsByPropertyKey() -> [AnyHashable: Any] {
return [
"_message" : "message",
"_timeStamp" : "timeStamp",
"_user" : "user"
]
}
}
And here is the code for where I try to save something to the DB and fail:
#objc func handleTap() {
print(#function)
let dynamoDbObjectMapper = AWSDynamoDBObjectMapper.default()
// Create data object using the data model:
let dataBlock = DynamoDBData()
dataBlock?._message = "message-TEST"
dataBlock?._timeStamp = "timeStamp-TEST"
dataBlock?._user = "user-TEST"
// Save the new item:
dynamoDbObjectMapper.save(dataBlock!, completionHandler: {
(error: Error?) -> Void in
if let error = error {
print("Amazon DynamoDB Save Error: \(error)")
return
}
print("An item was saved.")
})
}
Finally, this is the message I get showing a problem when trying to save data:
Amazon DynamoDB Save Error: Error Domain=com.amazonaws.AWSDynamoDBErrorDomain Code=19 "(null)"
UserInfo={__type=com.amazonaws.dynamodb.v20120810#ResourceNotFoundException,
message=Requested resource not found}
Since I have created a table DynamoDBData on the AWS console, I do not really understand why it says "Requested resource not found", but I guess I must have done something wrong at some point.
In case this can be useful, here is what appears in the AWS console for the table DynamoDBData:
Table name DynamoDBData
Primary partition key _timeStamp (String)
Primary sort key _user (String)
Point-in-time recovery DISABLED Enable
Encryption Type DEFAULT Manage Encryption
KMS Master Key ARN Not Applicable
Time to live attribute DISABLED Manage TTL
Table status Active
Creation date May 15, 2019 at 10:13:43 AM UTC+9
UTC: May 15, 2019 at 1:13:43 AM UTC
Local: May 15, 2019 at 10:13:43 AM UTC+9
Region (N. Virginia): May 14, 2019 at 8:13:43 PM UTC-5
Read/write capacity mode Provisioned
Last change to on-demand mode -
Provisioned read capacity units 5 (Auto Scaling Disabled)
Provisioned write capacity units 5 (Auto Scaling Disabled)
Last decrease time -
Last increase time -Storage size (in bytes) 0 bytes
Item count 0 Manage live count
Region US East (N. Virginia)
Amazon Resource Name (ARN) arn:aws:dynamodb:us-east-1:123456789012:table/DynamoDBData
Some guidance (even partial) on how to solve this issue would be very helpful.

Answer 1

One thing to double check: is the table's region the same region you're trying to access it in?
I noticed from a comment in your other question that the code was attempting to reach arn:aws:dynamodb:ap-northeast-1 but the above shows the table is actually in us-east-1.