Class: OpenC3::PacketConfig

Inherits:
Object show all
Defined in:
lib/openc3/packets/packet_config.rb

Overview

Reads a command or telemetry configuration file and builds a hash of packets.

Direct Known Subclasses

TableConfig

Constant Summary collapse

COMMAND = 
"Command"
TELEMETRY = 
"Telemetry"

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ PacketConfig

Returns a new instance of PacketConfig.



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# File 'lib/openc3/packets/packet_config.rb', line 94

def initialize
  @name = nil
  @telemetry = {}
  @commands = {}
  @limits_groups = {}
  @limits_sets = [:DEFAULT]
  # Hash of Hashes. First index by target name and then item name.
  # Returns an array of packets with that target and item.
  @latest_data = {}
  @warnings = []
  @cmd_id_value_hash = {}
  @tlm_id_value_hash = {}

  # Create unknown packets
  @commands['UNKNOWN'] = {}
  @commands['UNKNOWN']['UNKNOWN'] = Packet.new('UNKNOWN', 'UNKNOWN', :BIG_ENDIAN)
  @telemetry['UNKNOWN'] = {}
  @telemetry['UNKNOWN']['UNKNOWN'] = Packet.new('UNKNOWN', 'UNKNOWN', :BIG_ENDIAN)

  reset_processing_variables()
end

Instance Attribute Details

#cmd_id_value_hash ⇒ Hash<String>=>Hash<Array>=>Packet (readonly)

that returns a hash keyed by an array of id values. The id values resolve to the packet defined by that identification. Command version

Returns:



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# File 'lib/openc3/packets/packet_config.rb', line 81

def cmd_id_value_hash
  @cmd_id_value_hash
end

#commands ⇒ Hash<String=>Packet> (readonly)

Returns Hash of all the command packets keyed by the packet name.

Returns:

  • (Hash<String=>Packet>) —

    Hash of all the command packets keyed by the packet name.



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# File 'lib/openc3/packets/packet_config.rb', line 56

def commands
  @commands
end

#language ⇒ String (readonly)

Returns Language of current target (ruby or python).

Returns:

  • (String) —

    Language of current target (ruby or python)



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# File 'lib/openc3/packets/packet_config.rb', line 89

def language
  @language
end

#latest_data ⇒ Hash<String=>Hash<String=>Array(Packet)>> (readonly)

Returns Hash of hashes keyed first by the target name and then by the item name. This results in an array of packets containing that target and item. This structure is used to perform lookups when the packet and item are known but the packet is not.

Returns:

  • (Hash<String=>Hash<String=>Array(Packet)>>) —

    Hash of hashes keyed first by the target name and then by the item name. This results in an array of packets containing that target and item. This structure is used to perform lookups when the packet and item are known but the packet is not.



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# File 'lib/openc3/packets/packet_config.rb', line 76

def latest_data
  @latest_data
end

#limits_groups ⇒ Hash<String=>Array(String, String, String)> (readonly)

Returns Hash of all the limits groups keyed by the group name. The value is a three element array consisting of the target_name, packet_name, and item_name.

Returns:

  • (Hash<String=>Array(String, String, String)>) —

    Hash of all the limits groups keyed by the group name. The value is a three element array consisting of the target_name, packet_name, and item_name.



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# File 'lib/openc3/packets/packet_config.rb', line 61

def limits_groups
  @limits_groups
end

#limits_sets ⇒ Array<Symbol> (readonly)

Returns The defined limits sets for all items in the packet. This will always include :DEFAULT.

Returns:

  • (Array<Symbol>) —

    The defined limits sets for all items in the packet. This will always include :DEFAULT.



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# File 'lib/openc3/packets/packet_config.rb', line 65

def limits_sets
  @limits_sets
end

#name ⇒ String

Returns The name of this configuration. To be used by higher level classes to store information about the current PacketConfig.

Returns:

  • (String) —

    The name of this configuration. To be used by higher level classes to store information about the current PacketConfig.



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# File 'lib/openc3/packets/packet_config.rb', line 48

def name
  @name
end

#telemetry ⇒ Hash<String=>Packet> (readonly)

Returns Hash of all the telemetry packets keyed by the packet name.

Returns:

  • (Hash<String=>Packet>) —

    Hash of all the telemetry packets keyed by the packet name.



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# File 'lib/openc3/packets/packet_config.rb', line 52

def telemetry
  @telemetry
end

#tlm_id_value_hash ⇒ Hash<String>=>Hash<Array>=>Packet (readonly)

that returns a hash keyed by an array of id values. The id values resolve to the packet defined by that identification. Telemetry version

Returns:



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# File 'lib/openc3/packets/packet_config.rb', line 86

def tlm_id_value_hash
  @tlm_id_value_hash
end

#warnings ⇒ Array<String> (readonly)

Returns Array of strings listing all the warnings that were created while parsing the configuration file.

Returns:

  • (Array<String>) —

    Array of strings listing all the warnings that were created while parsing the configuration file.



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# File 'lib/openc3/packets/packet_config.rb', line 69

def warnings
  @warnings
end

Class Method Details

.from_config(config, process_target_name, language = 'ruby') ⇒ Object

This method provides way to quickly test packet configs

require ‘openc3/packets/packet_config’

config = <<END

...

END

pc = PacketConfig.from_config(config, “MYTARGET”) c = pc.commands[‘SET_POINTING_CMD’] c.restore_defaults() c.write(“MYITEM”, 5) puts c.buffer.formatted



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# File 'lib/openc3/packets/packet_config.rb', line 385

def self.from_config(config, process_target_name, language = 'ruby')
  pc = self.new
  tf = Tempfile.new("pc.txt")
  tf.write(config)
  tf.close
  begin
    pc.process_file(tf.path, process_target_name, language)
  ensure
    tf.unlink
  end
  return pc
end

Instance Method Details

#dynamic_add_packet(packet, cmd_or_tlm = :TELEMETRY, affect_ids: false) ⇒ Object 



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# File 'lib/openc3/packets/packet_config.rb', line 342

def dynamic_add_packet(packet, cmd_or_tlm = :TELEMETRY, affect_ids: false)
  if cmd_or_tlm == :COMMAND
    @commands[packet.target_name][packet.packet_name] = packet

    if affect_ids and not packet.virtual
      hash = @cmd_id_value_hash[packet.target_name]
      hash = {} unless hash
      @cmd_id_value_hash[packet.target_name] = hash
      update_id_value_hash(packet, hash)
    end
  else
    @telemetry[packet.target_name][packet.packet_name] = packet

    # Update latest_data lookup for telemetry
    packet.sorted_items.each do |item|
      target_latest_data = @latest_data[packet.target_name]
      target_latest_data[item.name] ||= []
      latest_data_packets = target_latest_data[item.name]
      latest_data_packets << packet unless latest_data_packets.include?(packet)
    end

    if affect_ids and not packet.virtual
      hash = @tlm_id_value_hash[packet.target_name]
      hash = {} unless hash
      @tlm_id_value_hash[packet.target_name] = hash
      update_id_value_hash(packet, hash)
    end
  end
end

#finish_packet ⇒ Object

Add current packet into hash if it exists



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# File 'lib/openc3/packets/packet_config.rb', line 315

def finish_packet
  finish_item()
  if @current_packet
    @warnings += @current_packet.check_bit_offsets
    if @current_cmd_or_tlm == COMMAND
      PacketParser.check_item_data_types(@current_packet)
      @commands[@current_packet.target_name][@current_packet.packet_name] = @current_packet
      unless @current_packet.virtual
        hash = @cmd_id_value_hash[@current_packet.target_name]
        hash = {} unless hash
        @cmd_id_value_hash[@current_packet.target_name] = hash
        update_id_value_hash(@current_packet, hash)
      end
    else
      @telemetry[@current_packet.target_name][@current_packet.packet_name] = @current_packet
      unless @current_packet.virtual
        hash = @tlm_id_value_hash[@current_packet.target_name]
        hash = {} unless hash
        @tlm_id_value_hash[@current_packet.target_name] = hash
        update_id_value_hash(@current_packet, hash)
      end
    end
    @current_packet = nil
    @current_item = nil
  end
end

#process_file(filename, process_target_name, language = 'ruby') ⇒ Object

Processes a OpenC3 configuration file and uses the keywords to build up knowledge of the commands, telemetry, and limits groups.

Parameters:

  • filename (String) —

    The name of the configuration file

  • process_target_name (String) —

    The target name. Pass nil when parsing an xtce file to automatically determine the target name.



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# File 'lib/openc3/packets/packet_config.rb', line 126

def process_file(filename, process_target_name, language = 'ruby')
  # Handle .xtce files
  extension = File.extname(filename).to_s.downcase
  if extension == ".xtce" or extension == ".xml"
    XtceParser.process(@commands, @telemetry, @warnings, filename, process_target_name)
    return
  end

  # Partial files are included into another file and thus aren't directly processed
  return if File.basename(filename)[0] == '_' # Partials start with underscore

  @language = language
  @converted_type = nil
  @converted_bit_size = nil
  @proc_text = ''
  @building_generic_conversion = false

  process_target_name = process_target_name.upcase
  parser = ConfigParser.new("https://docs.openc3.com/docs")
  parser.instance_variable_set(:@target_name, process_target_name)
  parser.parse_file(filename) do |keyword, params|
    if @building_generic_conversion
      case keyword
      # Complete a generic conversion
      when 'GENERIC_READ_CONVERSION_END', 'GENERIC_WRITE_CONVERSION_END'
        parser.verify_num_parameters(0, 0, keyword)
        @current_item.read_conversion =
          GenericConversion.new(@proc_text,
                                @converted_type,
                                @converted_bit_size) if keyword.include? "READ"
        @current_item.write_conversion =
          GenericConversion.new(@proc_text,
                                @converted_type,
                                @converted_bit_size) if keyword.include? "WRITE"
        @building_generic_conversion = false
      # Add the current config.line to the conversion being built
      else
        @proc_text << parser.line << "\n"
      end # case keyword

    else # not building generic conversion

      case keyword

      # Start a new packet
      when 'COMMAND'
        finish_packet()
        @current_packet = PacketParser.parse_command(parser, process_target_name, @commands, @warnings)
        @current_cmd_or_tlm = COMMAND

      when 'TELEMETRY'
        finish_packet()
        @current_packet = PacketParser.parse_telemetry(parser, process_target_name, @telemetry, @latest_data, @warnings)
        @current_cmd_or_tlm = TELEMETRY

      # Select an existing packet for editing
      when 'SELECT_COMMAND', 'SELECT_TELEMETRY'
        usage = "#{keyword} <TARGET NAME> <PACKET NAME>"
        finish_packet()
        parser.verify_num_parameters(2, 2, usage)
        target_name = process_target_name
        target_name = params[0].upcase if target_name == 'SYSTEM'
        packet_name = params[1].upcase

        @current_packet = nil
        if keyword.include?('COMMAND')
          @current_cmd_or_tlm = COMMAND
          if @commands[target_name]
            @current_packet = @commands[target_name][packet_name]
          end
        else
          @current_cmd_or_tlm = TELEMETRY
          if @telemetry[target_name]
            @current_packet = @telemetry[target_name][packet_name]
          end
        end
        raise parser.error("Packet not found", usage) unless @current_packet

      # Start the creation of a new limits group
      when 'LIMITS_GROUP'
        usage = "LIMITS_GROUP <GROUP NAME>"
        parser.verify_num_parameters(1, 1, usage)
        @current_limits_group = params[0].to_s.upcase
        @limits_groups[@current_limits_group] = [] unless @limits_groups.include?(@current_limits_group)

      # Add a telemetry item to the limits group
      when 'LIMITS_GROUP_ITEM'
        usage = "LIMITS_GROUP_ITEM <TARGET NAME> <PACKET NAME> <ITEM NAME>"
        parser.verify_num_parameters(3, 3, usage)
        @limits_groups[@current_limits_group] << [params[0].to_s.upcase, params[1].to_s.upcase, params[2].to_s.upcase] if @current_limits_group

      #######################################################################
      # All the following keywords must have a current packet defined
      #######################################################################
      when 'SELECT_ITEM', 'SELECT_PARAMETER', 'DELETE_ITEM', 'DELETE_PARAMETER', 'ITEM',\
          'PARAMETER', 'ID_ITEM', 'ID_PARAMETER', 'ARRAY_ITEM', 'ARRAY_PARAMETER', 'APPEND_ITEM',\
          'APPEND_PARAMETER', 'APPEND_ID_ITEM', 'APPEND_ID_PARAMETER', 'APPEND_ARRAY_ITEM',\
          'APPEND_ARRAY_PARAMETER', 'ALLOW_SHORT', 'HAZARDOUS', 'PROCESSOR', 'META',\
          'DISABLE_MESSAGES', 'HIDDEN', 'DISABLED', 'VIRTUAL', 'RESTRICTED', 'ACCESSOR', 'TEMPLATE', 'TEMPLATE_FILE',\
          'RESPONSE', 'ERROR_RESPONSE', 'SCREEN', 'RELATED_ITEM', 'IGNORE_OVERLAP', 'VALIDATOR'
        raise parser.error("No current packet for #{keyword}") unless @current_packet

        process_current_packet(parser, keyword, params)

      #######################################################################
      # All the following keywords must have a current item defined
      #######################################################################
      when 'STATE', 'READ_CONVERSION', 'WRITE_CONVERSION', 'POLY_READ_CONVERSION',\
          'POLY_WRITE_CONVERSION', 'SEG_POLY_READ_CONVERSION', 'SEG_POLY_WRITE_CONVERSION',\
          'GENERIC_READ_CONVERSION_START', 'GENERIC_WRITE_CONVERSION_START', 'REQUIRED',\
          'LIMITS', 'LIMITS_RESPONSE', 'UNITS', 'FORMAT_STRING', 'DESCRIPTION',\
          'MINIMUM_VALUE', 'MAXIMUM_VALUE', 'DEFAULT_VALUE', 'OVERFLOW', 'OVERLAP', 'KEY', 'VARIABLE_BIT_SIZE'
        raise parser.error("No current item for #{keyword}") unless @current_item

        process_current_item(parser, keyword, params)

      else
        # blank config.lines will have a nil keyword and should not raise an exception
        raise parser.error("Unknown keyword '#{keyword}'") if keyword
      end # case keyword

    end # if building_generic_conversion
  end

  # Complete the last defined packet
  finish_packet()
end

#to_config(output_dir) ⇒ Object

Convert the PacketConfig back to OpenC3 configuration files for each target



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# File 'lib/openc3/packets/packet_config.rb', line 255

def to_config(output_dir)
  FileUtils.mkdir_p(output_dir)

  @telemetry.each do |target_name, packets|
    next if target_name == 'UNKNOWN'

    FileUtils.mkdir_p(File.join(output_dir, target_name, 'cmd_tlm'))
    filename = File.join(output_dir, target_name, 'cmd_tlm', target_name.downcase + '_tlm.txt')
    begin
      File.delete(filename)
    rescue
      # Doesn't exist
    end
    packets.each do |_packet_name, packet|
      File.open(filename, 'a') do |file|
        file.puts packet.to_config(:TELEMETRY)
        file.puts ""
      end
    end
  end

  @commands.each do |target_name, packets|
    next if target_name == 'UNKNOWN'

    FileUtils.mkdir_p(File.join(output_dir, target_name, 'cmd_tlm'))
    filename = File.join(output_dir, target_name, 'cmd_tlm', target_name.downcase + '_cmd.txt')
    begin
      File.delete(filename)
    rescue
      # Doesn't exist
    end
    packets.each do |_packet_name, packet|
      File.open(filename, 'a') do |file|
        file.puts packet.to_config(:COMMAND)
        file.puts ""
      end
    end
  end

  # Put limits groups into SYSTEM target
  if @limits_groups.length > 0
    FileUtils.mkdir_p(File.join(output_dir, 'SYSTEM', 'cmd_tlm'))
    filename = File.join(output_dir, 'SYSTEM', 'cmd_tlm', 'limits_groups.txt')
    File.open(filename, 'w') do |file|
      @limits_groups.each do |limits_group_name, limits_group_items|
        file.puts "LIMITS_GROUP #{limits_group_name.to_s.quote_if_necessary}"
        limits_group_items.each do |target_name, packet_name, item_name|
          file.puts "  LIMITS_GROUP_ITEM #{target_name.to_s.quote_if_necessary} #{packet_name.to_s.quote_if_necessary} #{item_name.to_s.quote_if_necessary}"
        end
        file.puts ""
      end
    end
  end
end

#to_xtce(output_dir) ⇒ Object

def to_config



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# File 'lib/openc3/packets/packet_config.rb', line 310

def to_xtce(output_dir)
  XtceConverter.convert(@commands, @telemetry, output_dir)
end