using redis as backend store

Gemfile

@@ -28,6 +28,7 @@ gem 'mustache'
 gem 'nokogiri'
 gem "omniauth"
 gem "omniauth-openid"
+gem "openid-redis-store"
 gem "omniauth-facebook"
 gem "omniauth-twitter"
 gem 'oj'

Gemfile.lock

@@ -283,6 +283,9 @@ GEM
     omniauth-twitter (0.0.14)
       multi_json (~> 1.3)
       omniauth-oauth (~> 1.0)
+    openid-redis-store (0.0.2)
+      redis
+      ruby-openid
     pbkdf2 (0.1.0)
     pg (0.14.1)
     polyglot (0.3.3)
@@ -477,6 +480,7 @@ DEPENDENCIES
   omniauth-facebook
   omniauth-openid
   omniauth-twitter
+  openid-redis-store
   pbkdf2
   pg
   pry-rails

config/initializers/omniauth.rb

@@ -1,5 +1,6 @@
 require 'openid/store/filesystem'
 require 'openssl'
+require 'openid_redis_store'
 module OpenSSL
   module SSL
     remove_const :VERIFY_PEER
@@ -9,8 +10,8 @@ end
 OpenSSL::SSL::VERIFY_PEER = OpenSSL::SSL::VERIFY_NONE
 
 Rails.application.config.middleware.use OmniAuth::Builder do
-  provider :open_id, :store => OpenID::Store::Filesystem.new('/tmp'), :name => 'google', :identifier => 'https://www.google.com/accounts/o8/id', :require => 'omniauth-openid' 
-  provider :open_id, :store => OpenID::Store::Filesystem.new('/tmp'), :name => 'yahoo', :identifier => 'https://me.yahoo.com', :require => 'omniauth-openid' 
+  provider :open_id, :store => OpenID::Store::Redis.new($redis), :name => 'google', :identifier => 'https://www.google.com/accounts/o8/id', :require => 'omniauth-openid' 
+  provider :open_id, :store => OpenID::Store::Redis.new($redis), :name => 'yahoo', :identifier => 'https://me.yahoo.com', :require => 'omniauth-openid' 
   provider :facebook, SiteSetting.facebook_app_id, SiteSetting.facebook_app_secret, :scope => "email"
   provider :twitter, SiteSetting.twitter_consumer_key , SiteSetting.twitter_consumer_secret
 end