Tracks the number of failed attempts made by a user trying to authenticate with…

app/controllers/omniauth_callbacks_controller.rb

@@ -18,6 +18,16 @@ class OmniauthCallbacksController < Devise::OmniauthCallbacksController
     end
   end
 
+  # Extend the standard implementation to also increment
+  # the number of failed sign in attempts
+  def failure
+    user = User.find_by_username(params[:username])
+
+    user&.increment_failed_attempts!
+
+    super
+  end
+
   # Extend the standard message generation to accept our custom exception
   def failure_message
     exception = env["omniauth.error"]