Allow CognitoUser to use AWS Lambda - amazon-web-services

Question

My problem:
Using AWS SDK to invoke an AWS Lambda is giving me config errors
CredentialsError: Missing credentials in config
What I found:
Loggin in a user for the first time initiates proper config settings, but it's lost upon page refresh.
The Goal:
Use...the code below, even after the user has refreshed the page
lambda.invoke(params, function(err, data) {
if (err) {
// console.log(err, err.stack);
} else {
console.log(data);
} // successful response
});
Below is how I signIn a user from a cognitoUserPool the 1st time
Step 1 capture username and password
trySignIn(username, password) {
console.log("trying to sign in");
var authenticationData = {
Username: username,
Password: password
};
Step 2 use new AmazonCognitoIdentity.AuthenticationDetails
var authenticationDetails = new AmazonCognitoIdentity.AuthenticationDetails(
authenticationData
);
Step 3 configure UserPool with UserData
var poolData = {
UserPoolId: "myPoolId", // Your user pool id here
ClientId: "myPoolClient" // Your client id here
};
var userPool = new AmazonCognitoIdentity.CognitoUserPool(poolData);
var userData = {
Username: username,
Pool: userPool
};
Step 4 Get a CognitoUser object
var cognitoUser = new AmazonCognitoIdentity.CognitoUser(userData);
cognitoUser.authenticateUser(authenticationDetails, {
onSuccess: function(result) {
var accessToken = result.getAccessToken().getJwtToken();
console.log(result);
//POTENTIAL: Region needs to be set if not already set previously elsewhere.
//AWS.config.region = "us-east-1"; //moved to component did mount
AWS.config.credentials = new AWS.CognitoIdentityCredentials({
IdentityPoolId: "myidentiy-id-pool-id", // your identity pool id here
Logins: {
// Change the key below according to the specific region your user pool is in.
"cognito-idp.us-east-1.amazonaws.com/us-east-1": result
.getIdToken()
.getJwtToken()
}
});
Step 5 Here we can configure the AWS SDK to use things like AWS.Lambda / AWS.S3
//refreshes credentials using AWS.CognitoIdentity.getCredentialsForIdentity()
AWS.config.credentials.refresh(error => {
if (error) {
console.error(error);
} else {
// Instantiate aws sdk service objects now that the credentials have been updated.
// example: var s3 = new AWS.S3();
console.log("Successfully logged!");
}
});
Problem is event after saving the UserObject to storage I lose the AWS.config information and I can't reconfigure it without asking for the users password everytime
var user = { username: username };
localStorage.setItem("cognitoUser", JSON.stringify(user));
console.log(cognitoUser);
console.log(user);
The Question ?
How can I configure AWS.config having only access to the cognitoUser Object from storage, but not the user password
Update: <-- Did Not Work
I'm thinking it might be possible to save the variable created in Step 5 to storage.
var lambdaTry = new AWS.Lambda
localStorage.setItem("lambdaTry", JSON.stringify(lambdaTry));