Refactor

app/models/epp_session.rb

@@ -3,6 +3,11 @@ class EppSession < ApplicationRecord
 
   validates :session_id, uniqueness: true, presence: true
 
+  class_attribute :timeout
+  self.timeout = ENV['epp_session_timeout_seconds'].to_i.seconds
+
+  alias_attribute :last_access, :updated_at
+
   def self.limit_per_registrar
     4
   end
@@ -11,4 +16,21 @@ class EppSession < ApplicationRecord
     count = where(user_id: registrar.api_users.ids).where('updated_at >= ?', Time.zone.now - 1.second).count
     count >= limit_per_registrar
   end
+
+  def self.expired
+    interval = "#{timeout.parts.first.second} #{timeout.parts.first.first}"
+    where(':now > (updated_at + interval :interval)', now: Time.zone.now, interval: interval)
+  end
+
+  def update_last_access
+    touch
+  end
+
+  def timed_out?
+    (updated_at + self.class.timeout).past?
+  end
+
+  def expired?
+    timed_out?
+  end
 end