--- /dev/null
+begin
+ require_library_or_gem 'memcache'
+
+ module ActionController
+ module Session
+ class MemCacheStore < AbstractStore
+ def initialize(app, options = {})
+ # Support old :expires option
+ options[:expire_after] ||= options[:expires]
+
+ super
+
+ @default_options = {
+ :namespace => 'rack:session',
+ :memcache_server => 'localhost:11211'
+ }.merge(@default_options)
+
+ @pool = options[:cache] || MemCache.new(@default_options[:memcache_server], @default_options)
+ unless @pool.servers.any? { |s| s.alive? }
+ raise "#{self} unable to find server during initialization."
+ end
+ @mutex = Mutex.new
+
+ super
+ end
+
+ private
+ def get_session(env, sid)
+ sid ||= generate_sid
+ begin
+ session = @pool.get(sid) || {}
+ rescue MemCache::MemCacheError, Errno::ECONNREFUSED
+ session = {}
+ end
+ [sid, session]
+ end
+
+ def set_session(env, sid, session_data)
+ options = env['rack.session.options']
+ expiry = options[:expire_after] || 0
+ @pool.set(sid, session_data, expiry)
+ return true
+ rescue MemCache::MemCacheError, Errno::ECONNREFUSED
+ return false
+ end
+ end
+ end
+ end
+rescue LoadError
+ # MemCache wasn't available so neither can the store be
+end