def set_current_redis_master_from_master_file
      @last_time_master_file_changed = File.mtime(@config.redis_server)
      server_string = extract_redis_master(read_master_file)
      @current_master = !server_string.blank? ? Redis.from_server_string(server_string, :db => @config.redis_db) : nil
    end
def set_current_redis_master_from_master_file
      @last_time_master_file_changed = File.mtime(@config.redis_server)
      server_string = extract_redis_master(read_master_file)
      @current_master = !server_string.blank? ? Redis.from_server_string(server_string, :db => @config.redis_db) : nil
    end
set current redis master from server:port string contained in the redis master for our system