Having issue with refresh token, getting Nil while calling awsmobileclient.default().gettokens in swift about amplify-swift

[thisisabhash]

I see you're using Amplify version 2.25.0 - AWSMobileClient is no longer used in Amplify v2.

After calling Amplify.Auth.signIn(), you may fetch the credentials/tokens by following the documentation here:

https://docs.amplify.aws/swift/build-a-backend/auth/accessing-credentials/

[abdurrazax]

I see you're using Amplify version 2.25.0 - AWSMobileClient is no longer used in Amplify v2.

After calling Amplify.Auth.signIn(), you may fetch the credentials/tokens by following the documentation here:

https://docs.amplify.aws/swift/build-a-backend/auth/accessing-credentials/

After calling the documentation method I'm unable to call any mutation with this method

appDelegate.appSyncClient?.fetch(query: query, cachePolicy: .fetchIgnoringCacheData) { [weak self] (result, error) in

after getting the token AWSMobileClient is setting the auth token and can we do in the amplify V2 ?

[thisisabhash]

After calling Amplify.Auth.signIn(), Amplify automatically fetches tokens from Cognito UserPool and Identity Pool and saves it in Keychain.
To get the aws credentials/cognito user tokens, you can call like this:

import AWSPluginsCore

do {
    let session = try await Amplify.Auth.fetchAuthSession()

    // Get user sub or identity id
    if let identityProvider = session as? AuthCognitoIdentityProvider {
        let usersub = try identityProvider.getUserSub().get()
        let identityId = try identityProvider.getIdentityId().get()
        print("User sub - \(usersub) and identity id \(identityId)")
    }

    // Get AWS credentials
    if let awsCredentialsProvider = session as? AuthAWSCredentialsProvider {
        let credentials = try awsCredentialsProvider.getAWSCredentials().get()
        // Do something with the credentials
    }

    // Get cognito user pool token
    if let cognitoTokenProvider = session as? AuthCognitoTokensProvider {
        let tokens = try cognitoTokenProvider.getCognitoTokens().get()
        // Do something with the JWT tokens
    }
} catch let error as AuthError {
    print("Fetch auth session failed with error - \(error)")
} catch {
}

[IvanSolaris]

I'm facing a similar issue, but in my case, the whole cast is returning nil. When doing:

    // Get cognito user pool token
    if let cognitoTokenProvider = session as? AuthCognitoTokensProvider {
        let tokens = try cognitoTokenProvider.getCognitoTokens().get()
        // Do something with the JWT tokens
    }

the cast on the iflet cognitoTokenProvider is nil so it won't work, but interesting thing is that if i debug it and do it in the debugger the cast works

[thisisabhash]

Hi @IvanSolaris ,
If you have enabled guest user in Cognito Identity Pool and no user is signed in, you will be able to access only identityId and AWS credentials. All other session details will give you an error.
https://docs.amplify.aws/swift/build-a-backend/auth/accessing-credentials/

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