lib/modules/backend.rb in redis_monitor-0.0.2 vs lib/modules/backend.rb in redis_monitor-0.0.3

@@ -1,15 +1,34 @@
 require 'redis'
+require 'errors/errors'
 
 module RedisMonitor
   class Backend
     def self.config(arguments)
       @@host = arguments[:redis_host]
       @@port = arguments[:redis_port]
     end
 
+    def self.host
+      @@host
+    end
+
+    def self.port
+      @@port
+    end
+
+    def self.ensure_connected(redis)
+      begin
+        redis.ping
+      rescue Redis::CannotConnectError => e
+        raise RedisMonitor::Errors::RedisNotAvailable
+      end
+    end
+
     def self.redis
-      Redis.new(:host => @@host, :port => @@port)
+      redis = Redis.new(:host => host, :port => port)
+      ensure_connected(redis)
+      redis
     end
 
     def self.info
       redis.info
     end
\ No newline at end of file