How do I test Cloud Endpoints with Oauth on devserver - google-app-engine

Question

My app uses Oauthed Cloud Endpoints and is working fine in production.
My problem is that on the local devserver, my User user is always set to example#example.com, even though I've gone through the usual auth, access code, etc etc etc and have a valid authed user.
I get that example#example.com is useful to test oauth endpoints before I have oauth working properly, but since my app is working I'd rather see the actual user there.
To be specific, my endpoint method is
#ApiMethod(name = "insertEmp"), etc
public Emp insertEmp(User user, Emp emp) {
System.out.println(user.getEmail()); // (A) log "appengine" email
System.out.println(OAuthServiceFactory.getOAuthService().getCurrentUser().getEmail(); // (B) log authed email
...
When deployed, everything is fine, and both (A) and (B) log the authenticated user (my.email#gmail.com).
When testing on my local devserver, (A) always logs "example#example.com", even though I have gone through the Oauth sequence and have a valid, authenticated user, and (B) logs my.email#gmail.com. So I can do hi-fidelity testing, I need the User to be the real authenticated user.
So in simple terms, how do I get (A) and (B) to be the same?

Answer 1

It seems it can't be done. I've ended up coding around it by putting the following code at the top of my Endpoint methods.
if ("example#example.com".equalsIgnoreCase(user.getEmail()) {
user = new User(OAuthServiceFactory.getOAuthService().getCurrentUser().getEmail(),"foo");
}
So now, even on devserver, the User email matches the Oauth email.

Answer 2

This is not so easy. You'll have to make your settings in the APIs Console. Here you will be able to add "localhost" (http://localhost/) Then you can authenticate, through Google, even though you are running you application on your localhost for development.
I have used it extensively, and it works OK
Links: https://code.google.com/apis/console/
Just remember the ID's you use here is completely independent of you appengine ID.
Took me a few hours to figure that one out.

Answer 3

The thing is that when you are doing the authentication in local, you are not doing it through the Google servers so authenticating your user is something that actually is not happening in local.
Google always provides the example#example.com user when you try to simulate the log in, it happens basically in all the services, like when you provide a log in through your Google Account in any web site (for instance using GWT and App Engine).
What can be different in your site if you test with your real user or you consider example#example.com user as your user?

Answer 4

In your endpoint API you need this
ApiMethod ( name="YourEndPointName", path="yourPath",
clientIds={"YourId.apps.googleusercontent.com"},
scopes = { "https://www.googleapis.com/auth/userinfo.profile" })
Then in the called method, you will have a User object from the GAPI.
Use this to get the actual email from the google User object like this
public myEndPointMethod( Foo foo, User user ){
email = user.getEmail();
}

Answer 5

I replaced the Oauth2 user (example#example.com) with user from UserFactory and it works fine. I use this method to validate user for all API authenticated API requests.
public static User isAuthenticated(User user) throws OAuthRequestException{
if(user == null){
throw new OAuthRequestException("Please login before making requests");
}
if(SystemProperty.environment.value() ==
SystemProperty.Environment.Value.Development && "example#example.com".equalsIgnoreCase(user.getEmail()) ) {
//Replace the user from the user factory here.
user = UserServiceFactory.getUserService().getCurrentUser();
}
return user;
}

Answer 6

Using the go runtime I have resorted to this function to obtain a User that is functional on both the dev server and production:
func currentUser(c context.Context) *user.User {
const scope = "https://www.googleapis.com/auth/userinfo.email"
const devClient = "123456789.apps.googleusercontent.com"
allowedClients := map[string]bool{
"client-id-here.apps.googleusercontent.com": true,
devClient: true, // dev server
}
usr, err := user.CurrentOAuth(c, scope)
if err != nil {
log.Printf("Warning: Could not get current user: %s", err)
return nil
}
if !allowedClients[usr.ClientID] {
log.Printf("Warning: Unauthorized client connecting with the server: %s", usr.ClientID)
return nil
}
if (usr.ClientID == devClient) {
usr = user.Current(c) // replace with a more interesting user for dev server
}
return usr
}
This will use the dev server login information entered using http://localhost:8080/_ah/login

Answer 7

It's not possible.
I use another endpoint to replace user_id in current session.