Class: OpenC3::Interface

Inherits:
Object show all
Includes:
Api
Defined in:
lib/openc3/interfaces/interface.rb

Overview

Defines all the attributes and methods common to all interface classes used by OpenC3.

Constant Summary

Constants included from Api

Api::SUBSCRIPTION_DELIMITER

Constants included from ApiShared

ApiShared::DEFAULT_TLM_POLLING_RATE

Constants included from Extract

Extract::SCANNING_REGULAR_EXPRESSION

Instance Attribute Summary collapse

Instance Method Summary collapse

Methods included from Api

#_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_command_names, #get_all_commands, #get_all_interface_info, #get_all_router_info, #get_all_settings, #get_all_target_info, #get_all_telemetry, #get_all_telemetry_names, #get_cmd_buffer, #get_cmd_cnt, #get_cmd_cnts, #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_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_target, #get_target_interfaces, #get_target_list, #get_telemetry, #get_tlm_buffer, #get_tlm_cnt, #get_tlm_cnts, #get_tlm_packet, #get_tlm_values, #inject_tlm, #interface_protocol_cmd, #limits_enabled?, #list_configs, #list_settings, #load_config, #map_target_to_interface, #normalize_tlm, #offline_access_needed, #override_tlm, #router_cmd, #router_protocol_cmd, #save_config, #save_setting, #send_raw, #set_limits, #set_limits_set, #set_offline_access, #set_tlm, #set_tlm_process_args, #start_raw_logging_interface, #start_raw_logging_router, #stash_all, #stash_delete, #stash_get, #stash_keys, #stash_set, #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

#initializeInterface

Initialize default attribute values



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# File 'lib/openc3/interfaces/interface.rb', line 139

def initialize
  @name = self.class.to_s.split("::")[-1] # Remove namespacing if present
  @state = 'DISCONNECTED'
  @target_names = []
  @cmd_target_names = []
  @tlm_target_names = []
  @connect_on_startup = true
  @auto_reconnect = true
  @reconnect_delay = 5.0
  @disable_disconnect = false
  @packet_log_writer_pairs = []
  @stored_packet_log_writer_pairs = []
  # TODO: How should this get the log directory
  @raw_logger_pair = RawLoggerPair.new(@name, 'outputs/logs')
  @routers = []
  @cmd_routers = []
  @read_count = 0
  @write_count = 0
  @bytes_read = 0
  @bytes_written = 0
  @num_clients = 0
  @read_queue_size = 0
  @write_queue_size = 0
  @write_mutex = Mutex.new
  @read_allowed = true
  @write_allowed = true
  @write_raw_allowed = true
  @options = {}
  @read_protocols = []
  @write_protocols = []
  @protocol_info = []
  @read_raw_data = ''
  @written_raw_data = ''
  @read_raw_data_time = nil
  @written_raw_data_time = nil
  @config_params = []
  @interfaces = []
  @secrets = Secrets.getClient
end

Instance Attribute Details

#auto_reconnectBoolean

Returns Flag indicating if the interface should automatically reconnect after losing connection.

Returns:

  • (Boolean)

    Flag indicating if the interface should automatically reconnect after losing connection



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# File 'lib/openc3/interfaces/interface.rb', line 54

def auto_reconnect
  @auto_reconnect
end

#bytes_readInteger

Returns The number of bytes read from this interface.

Returns:

  • (Integer)

    The number of bytes read from this interface



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# File 'lib/openc3/interfaces/interface.rb', line 87

def bytes_read
  @bytes_read
end

#bytes_writtenInteger

Returns The number of bytes written to this interface.

Returns:

  • (Integer)

    The number of bytes written to this interface



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# File 'lib/openc3/interfaces/interface.rb', line 90

def bytes_written
  @bytes_written
end

#cmd_routersArray<Routers>

Returns Array of cmd routers that mirror packets sent from the interface.

Returns:

  • (Array<Routers>)

    Array of cmd routers that mirror packets sent from the interface



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# File 'lib/openc3/interfaces/interface.rb', line 78

def cmd_routers
  @cmd_routers
end

#cmd_target_namesArray<String>

Returns Array of cmd target names associated with this interface.

Returns:

  • (Array<String>)

    Array of cmd target names associated with this interface



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# File 'lib/openc3/interfaces/interface.rb', line 43

def cmd_target_names
  @cmd_target_names
end

#config_paramsArray

Returns Config params from the INTERFACE config line.

Returns:

  • (Array)

    Config params from the INTERFACE config line



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# File 'lib/openc3/interfaces/interface.rb', line 129

def config_params
  @config_params
end

#connect_on_startupBoolean

Returns Flag indicating if the interface should be connected to on startup.

Returns:

  • (Boolean)

    Flag indicating if the interface should be connected to on startup



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# File 'lib/openc3/interfaces/interface.rb', line 50

def connect_on_startup
  @connect_on_startup
end

#disable_disconnectBoolean

Returns Flag indicating if the user is allowed to disconnect this interface.

Returns:

  • (Boolean)

    Flag indicating if the user is allowed to disconnect this interface



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# File 'lib/openc3/interfaces/interface.rb', line 61

def disable_disconnect
  @disable_disconnect
end

#interfacesArray<Interface>

Returns Array of interfaces to route packets to (when used as a BridgeRouter).

Returns:

  • (Array<Interface>)

    Array of interfaces to route packets to (when used as a BridgeRouter)



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# File 'lib/openc3/interfaces/interface.rb', line 133

def interfaces
  @interfaces
end

#nameString

Returns Name of the interface.

Returns:

  • (String)

    Name of the interface



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# File 'lib/openc3/interfaces/interface.rb', line 34

def name
  @name
end

#num_clientsInteger

Returns The number of active clients (when used as a Router).

Returns:

  • (Integer)

    The number of active clients (when used as a Router)



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# File 'lib/openc3/interfaces/interface.rb', line 94

def num_clients
  @num_clients
end

#optionsHash<option name, option values>

Returns Hash of options supplied to interface/router.

Returns:

  • (Hash<option name, option values>)

    Hash of options supplied to interface/router



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# File 'lib/openc3/interfaces/interface.rb', line 105

def options
  @options
end

#packet_log_writer_pairsArray

Returns Array of packet logger classes for this interface.

Returns:

  • (Array)

    Array of packet logger classes for this interface



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# File 'lib/openc3/interfaces/interface.rb', line 64

def packet_log_writer_pairs
  @packet_log_writer_pairs
end

#protocol_infoArray<[Protocol Class, Protocol Args, Protocol kind (:READ, :WRITE, :READ_WRITE)>] Info to recreate protocols

Returns Array<[Protocol Class, Protocol Args, Protocol kind (:READ, :WRITE, :READ_WRITE)>] Info to recreate protocols.

Returns:

  • (Array<[Protocol Class, Protocol Args, Protocol kind (:READ, :WRITE, :READ_WRITE)>] Info to recreate protocols)

    Array<[Protocol Class, Protocol Args, Protocol kind (:READ, :WRITE, :READ_WRITE)>] Info to recreate protocols



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# File 'lib/openc3/interfaces/interface.rb', line 114

def protocol_info
  @protocol_info
end

#raw_logger_pairRawLoggerPair

Returns RawLoggerPair instance or nil.

Returns:



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# File 'lib/openc3/interfaces/interface.rb', line 70

def raw_logger_pair
  @raw_logger_pair
end

#read_countInteger

Returns The number of packets read from this interface.

Returns:

  • (Integer)

    The number of packets read from this interface



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# File 'lib/openc3/interfaces/interface.rb', line 81

def read_count
  @read_count
end

#read_protocolsArray<Protocol>

Returns Array of protocols for reading.

Returns:



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# File 'lib/openc3/interfaces/interface.rb', line 108

def read_protocols
  @read_protocols
end

#read_queue_sizeInteger

Returns The number of packets in the read queue (when used as a Router).

Returns:

  • (Integer)

    The number of packets in the read queue (when used as a Router)



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# File 'lib/openc3/interfaces/interface.rb', line 98

def read_queue_size
  @read_queue_size
end

#read_raw_dataString

Returns Most recently read raw data.

Returns:

  • (String)

    Most recently read raw data



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# File 'lib/openc3/interfaces/interface.rb', line 117

def read_raw_data
  @read_raw_data
end

#read_raw_data_timeTime

Returns Most recent read raw data time.

Returns:

  • (Time)

    Most recent read raw data time



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# File 'lib/openc3/interfaces/interface.rb', line 123

def read_raw_data_time
  @read_raw_data_time
end

#reconnect_delayInteger[ Delay between reconnect attempts

Returns Integer[ Delay between reconnect attempts.

Returns:

  • (Integer[ Delay between reconnect attempts)

    Integer[ Delay between reconnect attempts



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# File 'lib/openc3/interfaces/interface.rb', line 57

def reconnect_delay
  @reconnect_delay
end

#routersArray<Routers>

Returns Array of routers that receive packets read from the interface.

Returns:

  • (Array<Routers>)

    Array of routers that receive packets read from the interface



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# File 'lib/openc3/interfaces/interface.rb', line 74

def routers
  @routers
end

#secretsSecrets

Returns Interface secrets manager class.

Returns:

  • (Secrets)

    Interface secrets manager class



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# File 'lib/openc3/interfaces/interface.rb', line 136

def secrets
  @secrets
end

#stateString

Returns State of the interface: CONNECTED, ATTEMPTING, DISCONNECTED.

Returns:

  • (String)

    State of the interface: CONNECTED, ATTEMPTING, DISCONNECTED



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# File 'lib/openc3/interfaces/interface.rb', line 37

def state
  @state
end

#stored_packet_log_writer_pairsArray

Returns Array of stored packet log writers.

Returns:

  • (Array)

    Array of stored packet log writers



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# File 'lib/openc3/interfaces/interface.rb', line 67

def stored_packet_log_writer_pairs
  @stored_packet_log_writer_pairs
end

#target_namesArray<String>

Returns Array of target names associated with this interface.

Returns:

  • (Array<String>)

    Array of target names associated with this interface



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# File 'lib/openc3/interfaces/interface.rb', line 40

def target_names
  @target_names
end

#tlm_target_namesArray<String>

Returns Array of tlm target names associated with this interface.

Returns:

  • (Array<String>)

    Array of tlm target names associated with this interface



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# File 'lib/openc3/interfaces/interface.rb', line 46

def tlm_target_names
  @tlm_target_names
end

#write_countInteger

Returns The number of packets written to this interface.

Returns:

  • (Integer)

    The number of packets written to this interface



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# File 'lib/openc3/interfaces/interface.rb', line 84

def write_count
  @write_count
end

#write_protocolsArray<Protocol>

Returns Array of protocols for writing.

Returns:



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# File 'lib/openc3/interfaces/interface.rb', line 111

def write_protocols
  @write_protocols
end

#write_queue_sizeInteger

Returns The number of packets in the write queue (when used as a Router).

Returns:

  • (Integer)

    The number of packets in the write queue (when used as a Router)



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# File 'lib/openc3/interfaces/interface.rb', line 102

def write_queue_size
  @write_queue_size
end

#written_raw_dataString

Returns Most recently written raw data.

Returns:

  • (String)

    Most recently written raw data



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# File 'lib/openc3/interfaces/interface.rb', line 120

def written_raw_data
  @written_raw_data
end

#written_raw_data_timeTime

Returns Most recent written raw data time.

Returns:

  • (Time)

    Most recent written raw data time



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# File 'lib/openc3/interfaces/interface.rb', line 126

def written_raw_data_time
  @written_raw_data_time
end

Instance Method Details

#_writeObject

Wrap all writes in a mutex and handle errors



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# File 'lib/openc3/interfaces/interface.rb', line 327

def _write
  if @write_mutex.owned?
    yield
  else
    @write_mutex.synchronize { yield }
  end
rescue Exception => err
  Logger.error("#{@name}: Error writing to interface")
  disconnect()
  raise err
end

#add_protocol(protocol_class, protocol_args, read_write) ⇒ Object



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# File 'lib/openc3/interfaces/interface.rb', line 470

def add_protocol(protocol_class, protocol_args, read_write)
  protocol_args = protocol_args.clone
  protocol = protocol_class.new(*protocol_args)
  case read_write
  when :READ
    @read_protocols << protocol
  when :WRITE
    @write_protocols.unshift(protocol)
  when :READ_WRITE
    @read_protocols << protocol
    @write_protocols.unshift(protocol)
  else
    raise "Unknown protocol descriptor: #{read_write}. Must be :READ, :WRITE, or :READ_WRITE."
  end
  @protocol_info << [protocol_class, protocol_args, read_write]
  protocol.interface = self
end

#as_json(*a) ⇒ Object



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# File 'lib/openc3/interfaces/interface.rb', line 339

def as_json(*a)
  config = {}
  config['name'] = @name
  config['state'] = @state
  config['clients'] = self.num_clients
  config['txsize'] = @write_queue_size
  config['rxsize'] = @read_queue_size
  config['txbytes'] = @bytes_written
  config['rxbytes'] = @bytes_read
  config['txcnt'] = @write_count
  config['rxcnt'] = @read_count
  config
end

#connectObject

Connects the interface to its target(s). Must be implemented by a subclass.



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# File 'lib/openc3/interfaces/interface.rb', line 181

def connect
  (@read_protocols | @write_protocols).each { |protocol| protocol.connect_reset }
end

#connected?Boolean

Indicates if the interface is connected to its target(s) or not. Must be implemented by a subclass.

Returns:

  • (Boolean)


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# File 'lib/openc3/interfaces/interface.rb', line 187

def connected?
  raise "connected? not defined by Interface"
end

#convert_data_to_packet(data) ⇒ Packet

Called to convert the read data into a OpenC3 Packet object

Parameters:

  • data (String)

    Raw packet data

Returns:

  • (Packet)

    OpenC3 Packet with buffer filled with data



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# File 'lib/openc3/interfaces/interface.rb', line 430

def convert_data_to_packet(data)
  Packet.new(nil, nil, :BIG_ENDIAN, nil, data)
end

#convert_packet_to_data(packet) ⇒ Object

Called to convert a packet into the data to send

Parameters:

  • packet (Packet)

    Packet to extract data from

Returns:

  • data



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# File 'lib/openc3/interfaces/interface.rb', line 438

def convert_packet_to_data(packet)
  packet.buffer(true) # Copy buffer so logged command isn't modified
end

#copy_to(other_interface) ⇒ Object

Copy settings from this interface to another interface. All instance variables are copied except for num_clients, read_queue_size, and write_queue_size since these are all specific to the operation of the interface rather than its instantiation.

Parameters:

  • other_interface (Interface)

    The other interface to copy to



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# File 'lib/openc3/interfaces/interface.rb', line 390

def copy_to(other_interface)
  other_interface.name = self.name.clone
  other_interface.target_names = self.target_names.clone
  other_interface.cmd_target_names = self.cmd_target_names.clone
  other_interface.tlm_target_names = self.tlm_target_names.clone
  other_interface.connect_on_startup = self.connect_on_startup
  other_interface.auto_reconnect = self.auto_reconnect
  other_interface.reconnect_delay = self.reconnect_delay
  other_interface.disable_disconnect = self.disable_disconnect
  other_interface.packet_log_writer_pairs = self.packet_log_writer_pairs.clone
  other_interface.routers = self.routers.clone
  other_interface.cmd_routers = self.cmd_routers.clone
  other_interface.read_count = self.read_count
  other_interface.write_count = self.write_count
  other_interface.bytes_read = self.bytes_read
  other_interface.bytes_written = self.bytes_written
  other_interface.raw_logger_pair = self.raw_logger_pair.clone if @raw_logger_pair
  # num_clients is per interface so don't copy
  # read_queue_size is the number of packets in the queue so don't copy
  # write_queue_size is the number of packets in the queue so don't copy
  self.options.each do |option_name, option_values|
    other_interface.set_option(option_name, option_values)
  end
  other_interface.protocol_info = []
  self.protocol_info.each do |protocol_class, protocol_args, read_write|
    other_interface.add_protocol(protocol_class, protocol_args, read_write)
  end
end

#disconnectObject

Disconnects the interface from its target(s). Must be implemented by a subclass.



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# File 'lib/openc3/interfaces/interface.rb', line 193

def disconnect
  (@read_protocols | @write_protocols).each { |protocol| protocol.disconnect_reset }
end

#interface_cmd(cmd_name, *cmd_args) ⇒ Object



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# File 'lib/openc3/interfaces/interface.rb', line 488

def interface_cmd(cmd_name, *cmd_args)
  # Default do nothing - Implemented by subclasses
  return false
end

#protocol_cmd(cmd_name, *cmd_args, read_write: :READ_WRITE, index: -1)) ⇒ Object



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# File 'lib/openc3/interfaces/interface.rb', line 493

def protocol_cmd(cmd_name, *cmd_args, read_write: :READ_WRITE, index: -1)
  read_write = read_write.to_s.upcase.intern
  protocols = nil
  case read_write
  when :READ, :READ_WRITE
    protocols = @read_protocols
  when :WRITE
    protocols = @write_protocols.reverse # Reverse so ordering matches configuration ordering
  else
    raise "Unknown protocol descriptor: #{read_write}. Must be :READ, :WRITE, or :READ_WRITE."
  end
  handled = false
  protocols.each_with_index do |protocol, protocol_index|
    result = protocol.protocol_cmd(cmd_name, @cmd_args) if index == protocol_index or index == -1
    handled = true if result
  end
  return handled
end

#readPacket

Retrieves the next packet from the interface.

Returns:

  • (Packet)

    Packet constructed from the data. Packet will be unidentified (nil target and packet names)



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# File 'lib/openc3/interfaces/interface.rb', line 208

def read
  raise "Interface not connected for read: #{@name}" unless connected?
  raise "Interface not readable: #{@name}" unless read_allowed?

  first = true
  loop do
    # Protocols may have cached data for a packet, so initially just inject a blank string
    # Otherwise we can hold off outputing other packets where all the data has already
    # been received
    if !first or @read_protocols.length <= 0
      # Read data for a packet
      data = read_interface()
      unless data
        Logger.info("#{@name}: read_interface requested disconnect")
        return nil
      end
    else
      data = ''
      first = false
    end

    @read_protocols.each do |protocol|
      data = protocol.read_data(data)
      if data == :DISCONNECT
        Logger.info("#{@name}: Protocol #{protocol.class} read_data requested disconnect")
        return nil
      end
      break if data == :STOP
    end
    next if data == :STOP

    packet = convert_data_to_packet(data)

    # Potentially modify packet
    @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
    @read_count += 1
    Logger.warn("#{@name}: Interface unexpectedly requested disconnect") unless packet
    return packet
  end
rescue Exception => err
  Logger.error("#{@name}: Error reading from interface")
  disconnect()
  raise err
end

#read_allowed?Boolean

Returns Whether reading is allowed.

Returns:

  • (Boolean)

    Whether reading is allowed



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# File 'lib/openc3/interfaces/interface.rb', line 354

def read_allowed?
  @read_allowed
end

#read_interfaceObject



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# File 'lib/openc3/interfaces/interface.rb', line 197

def read_interface
  raise "read_interface not defined by Interface"
end

#read_interface_base(data) ⇒ String

Called to read data and manipulate it until enough data is returned. The definition of ‘enough data’ changes depending on the protocol used which is why this method exists. This method is also used to perform operations on the data before it can be interpreted as packet data such as decryption. After this method is called the post_read_data method is called. Subclasses must implement this method.

Returns:

  • (String)

    Raw packet data



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# File 'lib/openc3/interfaces/interface.rb', line 450

def read_interface_base(data)
  @read_raw_data_time = Time.now
  @read_raw_data = data.clone
  @bytes_read += data.length
  @raw_logger_pair.read_logger.write(data) if @raw_logger_pair
end

#set_option(option_name, option_values) ⇒ Object

Set an interface or router specific option

Parameters:

  • option_name

    name of the option

  • option_values

    array of option values



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# File 'lib/openc3/interfaces/interface.rb', line 422

def set_option(option_name, option_values)
  @options[option_name.upcase] = option_values.clone
end

#start_raw_loggingObject

Start raw logging for this interface



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# File 'lib/openc3/interfaces/interface.rb', line 369

def start_raw_logging
  @raw_logger_pair.start if @raw_logger_pair
end

#stop_raw_loggingObject

Stop raw logging for this interface



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# File 'lib/openc3/interfaces/interface.rb', line 374

def stop_raw_logging
  @raw_logger_pair.stop if @raw_logger_pair
end

#write(packet) ⇒ Object

Method to send a packet on the interface.

Parameters:

  • packet (Packet)

    The Packet to send out the interface



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# File 'lib/openc3/interfaces/interface.rb', line 265

def write(packet)
  raise "Interface not connected for write: #{@name}" unless connected?
  raise "Interface not writable: #{@name}" unless write_allowed?

  _write do
    @write_count += 1

    # Potentially modify packet
    @write_protocols.each do |protocol|
      packet = protocol.write_packet(packet)
      if packet == :DISCONNECT
        Logger.info("#{@name}: Protocol #{protocol.class} write_packet requested disconnect")
        disconnect()
        return
      end
      return if packet == :STOP
    end

    data = convert_packet_to_data(packet)

    # Potentially modify packet data
    @write_protocols.each do |protocol|
      data = protocol.write_data(data)
      if data == :DISCONNECT
        Logger.info("#{@name}: Protocol #{protocol.class} write_data requested disconnect")
        disconnect()
        return
      end
      return if data == :STOP
    end

    # Actually write out data if not handled by protocol
    write_interface(data)

    # Potentially block and wait for response
    @write_protocols.each do |protocol|
      packet, data = protocol.post_write_interface(packet, data)
      if packet == :DISCONNECT
        Logger.info("#{@name}: Protocol #{protocol.class} post_write_packet requested disconnect")
        disconnect()
        return
      end
      return if packet == :STOP
    end
  end

  return nil
end

#write_allowed?Boolean

Returns Whether writing is allowed.

Returns:

  • (Boolean)

    Whether writing is allowed



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# File 'lib/openc3/interfaces/interface.rb', line 359

def write_allowed?
  @write_allowed
end

#write_interfaceObject



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# File 'lib/openc3/interfaces/interface.rb', line 201

def write_interface
  raise "write_interface not defined by Interface"
end

#write_interface_base(data) ⇒ String

Called to write data to the underlying interface. Subclasses must implement this method and call super to count the raw bytes and allow raw logging.

Parameters:

  • data (String)

    Raw packet data

Returns:

  • (String)

    The exact data written



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# File 'lib/openc3/interfaces/interface.rb', line 463

def write_interface_base(data)
  @written_raw_data_time = Time.now
  @written_raw_data = data.clone
  @bytes_written += data.length
  @raw_logger_pair.write_logger.write(data) if @raw_logger_pair
end

#write_raw(data) ⇒ Object

Writes preformatted data onto the interface. Malformed data may cause problems.

Parameters:

  • data (String)

    The raw data to send out the interface



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# File 'lib/openc3/interfaces/interface.rb', line 317

def write_raw(data)
  raise "Interface not connected for write_raw: #{@name}" unless connected?
  raise "Interface not write-rawable: #{@name}" unless write_raw_allowed?

  _write do
    write_interface(data)
  end
end

#write_raw_allowed?Boolean

Returns Whether writing raw data over the interface is allowed.

Returns:

  • (Boolean)

    Whether writing raw data over the interface is allowed



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# File 'lib/openc3/interfaces/interface.rb', line 364

def write_raw_allowed?
  @write_raw_allowed
end