Is it possible to implement login functionality by reading from json file? NOTE: This is for an internal application so basic login functionality is enough.

{
    "credentials" : {
        "username" : "user1",
        "password" : "pass1"
    },
    {
        "username" : "user2",
        "password" : "pass2"
    },
    {
        "username" : "user3",
        "password" : "pass3"
    }
}

Can anyone help me through how to implement json file to auth service/login-component....any reference code would be much appreciated?

Thanks,