Vendoring mongo_session_store so we have one less dependency

Gemfile

@@ -8,7 +8,6 @@ gem "locomotive_liquid", ">= 2.1.3"
 gem "bson_ext", ">= 1.0.8"
 gem "mongoid", :git => 'http://github.com/mongoid/mongoid.git'
 gem "mongoid_acts_as_tree", "= 0.1.5"
-gem "mongo_session_store", "= 2.0.0.pre"
 gem "warden"
 gem "devise", "= 1.1.2"
 gem "haml", "= 3.0.18"

Gemfile.lock

@@ -149,8 +149,6 @@ GEM
     mimetype-fu (0.1.2)
     mongo (1.0.9)
       bson (>= 1.0.5)
-    mongo_session_store (2.0.0.pre)
-      actionpack (~> 3.0)
     mongoid_acts_as_tree (0.1.5)
       bson (>= 0.20.1)
       mongoid (<= 2.0.0)
@@ -249,7 +247,6 @@ DEPENDENCIES
   locomotive_liquid (>= 2.1.3)
   mimetype-fu
   mocha!
-  mongo_session_store (= 2.0.0.pre)
   mongoid!
   mongoid_acts_as_tree (= 0.1.5)
   mongrel

lib/locomotive.rb

@@ -16,7 +16,7 @@ require 'locomotive/routing'
 require 'locomotive/regexps'
 require 'locomotive/render'
 
-require 'mongo_session_store/mongoid'
+require 'locomotive/session_store'
 
 module Locomotive
 

lib/locomotive/session_store.rb

@@ -0,0 +1,57 @@
+module ActionDispatch
+  module Session
+    class MongoidStore < AbstractStore
+
+      class Session
+        include Mongoid::Document
+        include Mongoid::Timestamps
+
+        field :data, :type => String, :default => [Marshal.dump({})].pack("m*")
+        index :updated_at
+      end
+
+      # The class used for session storage.
+      cattr_accessor :session_class
+      self.session_class = Session
+
+      SESSION_RECORD_KEY = 'rack.session.record'.freeze
+
+      private
+        def generate_sid
+          BSON::ObjectId.new
+        end
+
+        def get_session(env, sid)
+          sid ||= generate_sid
+          session = find_session(sid)
+          env[SESSION_RECORD_KEY] = session
+          [sid, unpack(session.data)]
+        end
+
+        def set_session(env, sid, session_data)
+          record = env[SESSION_RECORD_KEY] ||= find_session(sid)
+          record.data = pack(session_data)
+          # Rack spec dictates that set_session should return true or false
+          # depending on whether or not the session was saved or not.
+          # However, ActionPack seems to want a session id instead.
+          record.save ? sid : false
+        end
+
+        def find_session(id)
+          id = BSON::ObjectId.from_string(id.to_s)
+          @@session_class.first(:conditions => { :_id => id }) ||
+            @@session_class.new(:id => id)
+        end
+
+        def pack(data)
+          [Marshal.dump(data)].pack("m*")
+        end
+
+        def unpack(packed)
+          return nil unless packed
+          Marshal.load(packed.unpack("m*").first)
+        end
+
+    end
+  end
+end

locomotive_cms.gemspec

@@ -22,7 +22,6 @@ Gem::Specification.new do |s|
   s.add_dependency "bson_ext", ">= 1.0.8"
   s.add_dependency "mongoid", ">= 2.0.0.beta.18"
   s.add_dependency "mongoid_acts_as_tree", "= 0.1.5"
-  s.add_dependency "mongo_session_store", "= 2.0.0.pre"
   s.add_dependency "warden"
   s.add_dependency "devise", "= 1.1.2"
   s.add_dependency "haml", "= 3.0.18"