My application uses Google OAuth2 alongside Spring security. The sample implementation is here.
The problem is >> I have multiple users signed in my chrome browser.User can be normal Google user or Google Apps Domain user as well. I dont get why my application redirects to https://appengine.google.com/_ah/loginform?state=####.
After I select a user from the provided options , UserService interface takes credentials of the user selected. But again after this I am prompted with account chooser page.
In my application I have used createLoginURL() of UserService to redirect user to login page. Also if I select a different user from the account chooser page, the one prompted second, the UserService still retains the credentials of the user selected from the first page.
The problem I am stuck in here is how to update my UserService according to the user selected. Also if user switches to second account from Google's page (search,drive,mail etc.) , how can I re-instantiate UserService with the changed user's credentials . Is there any way I could use 'authUser' or 'session_state' of request headers or any other values to trigger an event in application due to the user change. I am aware of the fact that sessions on Google App Engine are maintained using datastore entity '_ah_SESSION' and I have a cron to remove the expired ones as well in place. Everything works fine if browser has just one user logged into Google.
In short, how to maintain multiple user sign-in details using UserService interface?
