module core 
  {
    module messages<typename message_type_t>
    {
      module message_interaction_api 
      {
      
        interface message_intf
        {
          ::core::return_codes::comm_ecode push (in message_type_t message);
        };
      };

      porttype message_emitter_port 
      {
        uses message_intf emitter_port_element;
      };
      
      porttype message_receiver_port 
      {
        provides message_intf receiver_port_element;
      };
    
      connector simple_message_connector 
      {
        mirrorport message_emitter_port emitter;
        mirrorport message_receiver_port receiver;
      };
      
    };
    
    module services<interface service_intf_t> 
    {

      porttype service_server_port 
      {
        provides service_intf_t server_port_element;
      };
      porttype service_client_port 
      {
        uses service_intf_t client_port_element;
      };
    
      connector simple_service_connector 
      {
        mirrorport service_client_port client;
        mirrorport service_server_port server;
      };
      
    };
    
    module component_execution_policies 
    {
      module execution_policies_api 
      {
        interface component_execution_intf
        {
          void run ();
        };
      };

    };
    
    module container_services 
    {
      module clock_service 
      {
        module clock_api 
        {
          typedef unsigned short ucm_time_t;
          typedef unsigned short ucm_usecond_t;
           struct ucm_timeval_t {
            ucm_time_t utv_sec; 
            ucm_usecond_t ucm_usec; 
          };
          
          interface clock_service_intf
          {
            void get_local_time (out ucm_timeval_t local_time);
            void get_synchronized_time (out ucm_timeval_t synchronized_time);
          };

        };

      };
      
      module trace_service 
      {
        module trace_api 
        {
          typedef string method_name_t;
          enum log_severity_t {
            trace
          ,  debug
          ,  info
          ,  warning
          ,  error
          ,  critical
          };
          typedef unsigned short log_severity_enumerator_t;
          typedef wstring log_message_t;  
        
          interface trace_service_intf
          {
            void log (in log_severity_t severity,in log_message_t message);
          };
        
         
        };
      };

    };
    
    module return_codes 
    {
      enum comm_ecode {
        ok
      ,  internal_error
      ,  comm_error
      };
      typedef unsigned short comm_ecode_enumerator_t;

    };
  
  };