Class: Cosmos::SimulatedTargetInterface

Inherits:
Interface show all
Defined in:
lib/cosmos/interfaces/simulated_target_interface.rb

Overview

An interface class that provides simulated telemetry and command responses

Constant Summary

Constants included from Api

Api::SETTINGS_KEY, Api::SUBSCRIPTION_DELIMITER

Constants included from ApiShared

ApiShared::DEFAULT_TLM_POLLING_RATE

Constants included from Extract

Extract::SCANNING_REGULAR_EXPRESSION

Instance Attribute Summary

Attributes inherited from Interface

#auto_reconnect, #bytes_read, #bytes_written, #cmd_routers, #config_params, #connect_on_startup, #disable_disconnect, #interfaces, #name, #num_clients, #options, #override_tlm, #packet_log_writer_pairs, #protocol_info, #raw_logger_pair, #read_count, #read_protocols, #read_queue_size, #read_raw_data, #read_raw_data_time, #reconnect_delay, #routers, #state, #stored_packet_log_writer_pairs, #target_names, #write_count, #write_protocols, #write_queue_size, #written_raw_data, #written_raw_data_time

Instance Method Summary collapse

Methods inherited from Interface

#_normalize_tlm, #_override, #_override_tlm, #_override_tlm_raw, #_write, #add_protocol, #as_json, #convert_data_to_packet, #convert_packet_to_data, #copy_to, #read_allowed?, #read_interface, #read_interface_base, #set_option, #start_raw_logging, #stop_raw_logging, #write_allowed?, #write_interface, #write_interface_base, #write_raw_allowed?

Methods included from Api

#_get_cnt, #_limits_group, #_validate_tlm_type, #build_cmd_output_string, #cmd, #cmd_implementation, #cmd_no_checks, #cmd_no_hazardous_check, #cmd_no_range_check, #cmd_raw, #cmd_raw_no_checks, #cmd_raw_no_hazardous_check, #cmd_raw_no_range_check, #connect_interface, #connect_router, #delete_config, #disable_limits, #disable_limits_group, #disconnect_interface, #disconnect_router, #enable_limits, #enable_limits_group, #get_all_cmd_info, #get_all_cmd_tlm_info, #get_all_commands, #get_all_commands_list, #get_all_interface_info, #get_all_router_info, #get_all_settings, #get_all_target_info, #get_all_telemetry, #get_all_telemetry_list, #get_all_tlm_info, #get_cmd_buffer, #get_cmd_cnt, #get_cmd_hazardous, #get_cmd_time, #get_cmd_value, #get_command, #get_interface, #get_interface_names, #get_item, #get_limits, #get_limits_events, #get_limits_groups, #get_limits_set, #get_limits_sets, #get_oldest_logfile, #get_out_of_limits, #get_overall_limits_state, #get_packet_derived_items, #get_packets, #get_parameter, #get_router, #get_router_names, #get_saved_config, #get_setting, #get_settings, #get_stale, #get_target, #get_target_list, #get_telemetry, #get_tlm_buffer, #get_tlm_cnt, #get_tlm_packet, #get_tlm_values, #inject_tlm, #limits_enabled?, #list_configs, #list_settings, #load_config, #normalize_tlm, #override_tlm, #save_config, #save_setting, #send_raw, #set_limits, #set_limits_set, #set_tlm, #set_tlm_process_args, #start_raw_logging_interface, #start_raw_logging_router, #stop_raw_logging_interface, #stop_raw_logging_router, #subscribe_packets, #tlm, #tlm_formatted, #tlm_process_args, #tlm_raw, #tlm_variable, #tlm_with_units

Constructor Details

#initialize(sim_target_file) ⇒ SimulatedTargetInterface

Returns a new instance of SimulatedTargetInterface.

Parameters:

  • sim_target_file (String) —

    Filename of the simulator target class



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# File 'lib/cosmos/interfaces/simulated_target_interface.rb', line 27

def initialize(sim_target_file)
  super()
  @connected = false
  @initialized = false
  @count_100hz = 0
  @next_tick_time = nil
  @pending_packets = []
  @sim_target_class = Cosmos.require_class sim_target_file
  @sim_target = nil
  @write_raw_allowed = false
  @raw_logger_pair = nil
  add_protocol(OverrideProtocol, [], :READ)
end

Instance Method Details

#connect ⇒ Object

Initialize the simulated target object and “connect” to the target



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# File 'lib/cosmos/interfaces/simulated_target_interface.rb', line 42

def connect
  unless @initialized
    # Save the current time + 10 ms as the next expected tick time
    @next_tick_time = Time.now.sys + 0.01
    # Create Simulated Target Object
    @sim_target = @sim_target_class.new(@target_names[0])
    # Set telemetry rates
    @sim_target.set_rates

    @initialized = true
  end
  @connected = true
end

#connected? ⇒ Boolean

Returns Whether the simulated target is connected (initialized).

Returns:

  • (Boolean) —

    Whether the simulated target is connected (initialized)



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# File 'lib/cosmos/interfaces/simulated_target_interface.rb', line 57

def connected?
  @connected
end

#disconnect ⇒ Object

Disconnect from the simulator



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# File 'lib/cosmos/interfaces/simulated_target_interface.rb', line 146

def disconnect
  @connected = false
end

#raw_logger_pair=(raw_logger_pair) ⇒ Object

Raise an error because raw logging is not supported for this interface



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# File 'lib/cosmos/interfaces/simulated_target_interface.rb', line 141

def raw_logger_pair=(raw_logger_pair)
  raise "Raw logging not supported for SimulatedTargetInterface"
end

#read ⇒ Packet

Returns a simulated target packet from the simulator

Returns:

  • (Packet) —

    Returns a simulated target packet from the simulator



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# File 'lib/cosmos/interfaces/simulated_target_interface.rb', line 62

def read
  packet = nil
  if @connected
    packet = first_pending_packet()
    if packet
      # Support read_packet (but not read data) in protocols
      # Generic protocol use is not supported
      @read_protocols.each do |protocol|
        packet = protocol.read_packet(packet)
        if packet == :DISCONNECT
          Logger.info("#{@name}: Protocol #{protocol.class} read_packet requested disconnect")
          return nil
        end
        break if packet == :STOP
      end
      return packet unless packet == :STOP
    end

    while true
      # Calculate time to sleep to make ticks 10ms apart
      now = Time.now.sys
      delta = @next_tick_time - now
      if delta > 0.0
        sleep(delta) # Sleep up to 10 ms
        return nil unless @connected
      elsif delta < -1.0
        # Fell way behind - jump next tick time
        @next_tick_time = Time.now.sys
      end

      @pending_packets = @sim_target.read(@count_100hz, @next_tick_time)
      @next_tick_time += 0.01
      @count_100hz += 1

      packet = first_pending_packet()
      if packet
        # Support read_packet (but not read data) in protocols
        # Generic protocol use is not supported
        @read_protocols.each do |protocol|
          packet = protocol.read_packet(packet)
          if packet == :DISCONNECT
            Logger.info("#{@name}: Protocol #{protocol.class} read_packet requested disconnect")
            return nil
          end
          break if packet == :STOP
        end
        next if packet == :STOP

        return packet
      end
    end
  else
    raise "Interface not connected"
  end
  return packet
end

#write(packet) ⇒ Object

Parameters:

  • packet (Packet) —

    Command packet to send to the simulator



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# File 'lib/cosmos/interfaces/simulated_target_interface.rb', line 120

def write(packet)
  if @connected
    # Update count of commands sent through this interface
    @write_count += 1
    @bytes_written += packet.length
    @written_raw_data_time = Time.now
    @written_raw_data = packet.buffer

    # Have simulated target handle the packet
    @sim_target.write(packet)
  else
    raise "Interface not connected"
  end
end

#write_raw(data) ⇒ Object

write_raw is not implemented and will raise a RuntimeError



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# File 'lib/cosmos/interfaces/simulated_target_interface.rb', line 136

def write_raw(data)
  raise "write_raw not implemented for SimulatedTargetInterface"
end