How to authenicate AWS Appsync in iOS (Swift) - swift

Question

Junior developer here.
I'm trying to get AWS Appsync to work in an iOS app I'm currently building, but I cant get authentication working.
I want to replicate this Javascript code in swift, for my authenication.
Amplify.configure({
Auth: {
region: "<REGION>",
userPoolId: "<USER-POOL-ID>",
userPoolWebClientId: "<USER-POOL-WEB-CLIENT-ID>"
}
});
const client = new AWSAppSyncClient({
auth: {
jwtToken: async () =>
(await Auth.currentSession()).getIdToken().getJwtToken(),
type: AUTH_TYPE.AMAZON_COGNITO_USER_POOLS
},
disableOffline: true,
region: "<REGION>",
url:
"<ENDPOINT-URL>"
});
I have found a similar problem here:
cannot authenticate user for aws appsync with swift SDK
But he hasn't gotten an answer.
I have googled plenty but cant seem to find a solution.
Could one of you kind programer souls point me in the right direction?

Answer 1

AWS SDK for iOS - AppSync solves your use-case. You can check out the documentation here: https://docs.aws.amazon.com/appsync/latest/devguide/building-a-client-app-ios.html. You can check out the source code here: https://github.com/awslabs/aws-mobile-appsync-sdk-ios. There is a starter app which will help you onboard quickly: https://github.com/aws-samples/aws-mobile-appsync-events-starter-ios.
import UIKit
import AWSAppSync
#UIApplicationMain
class AppDelegate: UIResponder, UIApplicationDelegate {
var window: UIWindow?
var appSyncClient: AWSAppSyncClient?
func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -> Bool {
// Set up Amazon Cognito credentials
let credentialsProvider = AWSCognitoCredentialsProvider(regionType: CognitoIdentityRegion,
identityPoolId: CognitoIdentityPoolId)
// You can choose your database location, accessible by the SDK
let databaseURL = URL(fileURLWithPath:NSTemporaryDirectory()).appendingPathComponent(database_name)
do {
// Initialize the AWS AppSync configuration
let appSyncConfig = try AWSAppSyncClientConfiguration(url: AppSyncEndpointURL,
serviceRegion: AppSyncRegion,
credentialsProvider: credentialsProvider,
databaseURL:databaseURL)
// Initialize the AWS AppSync client
appSyncClient = try AWSAppSyncClient(appSyncConfig: appSyncConfig)
// Set id as the cache key for objects
appSyncClient?.apolloClient?.cacheKeyForObject = { $0["id"] }
} catch {
print("Error initializing appsync client. \(error)")
}
return true
}
// ... other intercept methods
}