Worklight - How to check if a client is already logged in - authentication

Question

LoginViewModel.js
function login(){
var username='worklight';
var password = 'worklight';
var invocationData = {
adapter : "AuthenticationAdapter",
procedure : "submitAuthentication",
parameters : [ username, password ]
};
adapterAuthRealmChallengeHandler.submitAdapterAuthentication(invocationData, {});
AdapterAuthRealmChallengeProcessor.js
var adapterAuthRealmChallengeHandler = WL.Client.createChallengeHandler("AdapterAuthRealm");
adapterAuthRealmChallengeHandler.isCustomResponse = function(response) {
if (!response || !response.responseJSON || response.responseText === null) {
return false;
}
if (typeof(response.responseJSON.authRequired) !== 'undefined'){
return true;
} else {
return false;
}
};
adapterAuthRealmChallengeHandler.handleChallenge = function(response){
var authRequired = response.responseJSON.authRequired;
if (authRequired == true){
window.location = "#login";
alert(response.responseJSON.errorMessage);
} else if (authRequired == false){
adapterAuthRealmChallengeHandler.submitSuccess();
window.location = "#Home";
}
};
AuthenticationAdapter-impl.js
function onAuthRequired(headers, errorMessage){
errorMessage = errorMessage ? errorMessage : null;
return {
authRequired: true,
errorMessage: errorMessage
};
}
function submitAuthentication(username, password){
var userIdentity = {
userId: username,
displayName: username,
attributes: {
foo: "bar"
}
};
WL.Server.setActiveUser("AdapterAuthRealm", userIdentity);
return {
authRequired: false
};
}
I am not able to set setActiveUser. How to set it and get it. Above wat I have to done for maintaining session. Is it right way to do it. Sometimes I got error Illegal State: Cannot change identity of an already logged in user in realm 'Adapter AuthRealm'. The application must logout first. If I tried to set it null first then it causes my application to enter an infinite loop of attempting to authenticate. Any idea why I would see this behavior?
Anything I am doing wrong?
please help mi out.

Answer 1

Check the SO answer for Worklight logout does not clear active user
Try reloading app onSuccess of Logout.
WL.Client.logout("AdapterAuthRealm",{
onSuccess: function(){ WL.Client.reloadApp(); },
onFailure: function(){ WL.Logger.debug("Error on logout");}
});
And you can check realm is authenticated or not by using wl client Java script API
WL.Client.isUserAuthenticated("AdapterAuthRealm");