Class: Cosmos::Replay

Inherits:
QtTool show all
Defined in:
lib/cosmos/tools/replay/replay.rb

Constant Summary collapse

UNKNOWN_BYTES_TO_PRINT =

The number of bytes to print when an UNKNOWN packet is received

36

Class Method Summary collapse

Instance Method Summary collapse

Methods inherited from QtTool

#about, #closeEvent, #complete_initialize, create_default_options, graceful_kill, #initialize_actions, #initialize_help_menu, post_options_parsed_hook, pre_window_new_hook, redirect_io, restore_io

Constructor Details

#initialize(options) ⇒ Replay

Returns a new instance of Replay.



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# File 'lib/cosmos/tools/replay/replay.rb', line 26

def initialize(options)
  # MUST BE FIRST - All code before super is executed twice in RubyQt Based classes
  super(options)
  Cosmos.load_cosmos_icon("replay.png")

  initialize_actions()
  initialize_menus()
  initialize_central_widget()
  complete_initialize()

  @ready = false
  Splash.execute(self) do |splash|
    ConfigParser.splash = splash
    splash.message = "Initializing Replay Server"

    # Start the thread that will process server messages and add them to the output text
    process_server_messages(options)

    ReplayServer.new(options.config_file, false, false, false)
    @ready = true

    ConfigParser.splash = nil
  end

  # Initialize variables
  @packet_log_reader = System.default_packet_log_reader.new
  @log_directory = System.paths['LOGS']
  @log_directory << '/' unless @log_directory[-1..-1] == '\\' or @log_directory[-1..-1] == '/'
  @log_filename = nil
  @playing = false
  @playback_thread = nil
  @playback_index = 0
  @packet_offsets = []
end

Class Method Details

.run(option_parser = nil, options = nil) ⇒ Object 



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# File 'lib/cosmos/tools/replay/replay.rb', line 480

def self.run(option_parser = nil, options = nil)
  Cosmos.catch_fatal_exception do
    unless option_parser and options
      option_parser, options = create_default_options()
      options.title = 'Replay'
      options.width = 800
      options.height = 500
      options.auto_size = false
      options.config_file = CmdTlmServer::DEFAULT_CONFIG_FILE
      option_parser.separator "Replay Specific Options:"
      option_parser.on("-c", "--config FILE", "Use the specified configuration file") do |arg|
        options.config_file = arg
      end
    end

    super(option_parser, options)
  end
end

Instance Method Details

#cancel_callback(progress_dialog = nil) ⇒ Object 



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# File 'lib/cosmos/tools/replay/replay.rb', line 253

def cancel_callback(progress_dialog = nil)
  @cancel = true
  return true, false
end

#handle_packet(packet) ⇒ Object 



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# File 'lib/cosmos/tools/replay/replay.rb', line 396

def handle_packet(packet)
  # For replay we will try our best here but not crash on errors
  begin
    interface = nil

    # Identify and update packet
    if packet.identified?
      # Preidentifed packet - place it into the current value table
      identified_packet = System.telemetry.update!(packet.target_name,
                                                   packet.packet_name,
                                                   packet.buffer)
    else
      # Packet needs to be identified
      identified_packet = System.telemetry.identify!(packet.buffer)
    end

    if identified_packet and packet.target_name != 'UNKNOWN'
      identified_packet.received_time = packet.received_time
      packet = identified_packet
      target = System.targets[packet.target_name.upcase]
      interface = target.interface if target
    else
      unknown_packet = System.telemetry.update!('UNKNOWN', 'UNKNOWN', packet.buffer)
      unknown_packet.received_time = packet.received_time
      packet = unknown_packet
      data_length = packet.length
      string = "Unknown #{data_length} byte packet starting: "
      num_bytes_to_print = [UNKNOWN_BYTES_TO_PRINT, data_length].min
      data_to_print = packet.buffer(false)[0..(num_bytes_to_print - 1)]
      data_to_print.each_byte do |byte|
        string << sprintf("%02X", byte)
      end
      time_string = ''
      time_string = packet.received_time.formatted << '  ' if packet.received_time
      puts "#{time_string}ERROR:  #{string}"
    end

    target = System.targets[packet.target_name]
    target.tlm_cnt += 1 if target
    packet.received_count += 1
    packet.check_limits(System.limits_set)
    ReplayServer.instance.post_packet(packet)

    # Write to routers
    if interface
      interface.routers.each do |router|
        begin
          router.write(packet) if router.write_allowed? and router.connected?
        rescue => err
          Logger.error "Problem writing to router #{router.name} - #{err.class}:#{err.message}"
        end
      end
    end
  rescue Exception => err
    Logger.error "Problem handling packet #{packet.target_name} #{packet.packet_name} - #{err.class}:#{err.message}"
  end
end

#initialize_central_widget ⇒ Object 



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# File 'lib/cosmos/tools/replay/replay.rb', line 73

def initialize_central_widget
  # Create the central widget
  @central_widget = Qt::Widget.new
  setCentralWidget(@central_widget)

  @top_layout = Qt::VBoxLayout.new

  @log_widget = Qt::Widget.new
  @log_widget.setSizePolicy(Qt::SizePolicy::MinimumExpanding, Qt::SizePolicy::MinimumExpanding)
  @log_layout = Qt::VBoxLayout.new()

  # This widget goes inside the top layout so we want 0 contents margins
  @log_layout.setContentsMargins(0,0,0,0)
  @log_widget.setLayout(@log_layout)

  # Create the log file GUI
  @log_file_selection = Qt::GroupBox.new("Log File Selection")
  @log_select = Qt::HBoxLayout.new(@log_file_selection)
  @log_name = Qt::LineEdit.new
  @log_name.setReadOnly(true)
  @log_select.addWidget(@log_name)
  @log_open = Qt::PushButton.new("Browse...")
  @log_select.addWidget(@log_open)
  @log_layout.addWidget(@log_file_selection)

  @log_open.connect(SIGNAL('clicked()')) { select_log_file() }

  # Create the operation buttons GUI
  @op = Qt::GroupBox.new(tr("Playback Control"))
  @op_layout = Qt::VBoxLayout.new(@op)
  @op_button_layout = Qt::HBoxLayout.new
  @move_start = Qt::PushButton.new(Cosmos.get_icon('skip_to_start-26.png'), '')
  @move_start.connect(SIGNAL('clicked()')) { move_start() }
  @op_button_layout.addWidget(@move_start)
  @step_back = Qt::PushButton.new(Cosmos.get_icon('rewind-26.png'), '')
  @step_back_timer = Qt::Timer.new
  @step_back_timeout = 100
  @step_back_timer.connect(SIGNAL('timeout()')) { step_back(); @step_back_timeout = (@step_back_timeout / 2).to_i; @step_back_timer.start(@step_back_timeout) }
  @step_back.connect(SIGNAL('pressed()')) { step_back(); @step_back_timeout = 300; @step_back_timer.start(@step_back_timeout) }
  @step_back.connect(SIGNAL('released()')) { @step_back_timer.stop }
  @op_button_layout.addWidget(@step_back)
  @reverse_play = Qt::PushButton.new(Cosmos.get_icon('reverse-play-26.png'), '')
  @reverse_play.connect(SIGNAL('clicked()')) { reverse_play() }
  @op_button_layout.addWidget(@reverse_play)
  @stop = Qt::PushButton.new(Cosmos.get_icon('stop-26.png'), '')
  @stop.connect(SIGNAL('clicked()')) { stop() }
  @op_button_layout.addWidget(@stop)
  @play = Qt::PushButton.new(Cosmos.get_icon('play-26.png'), '')
  @play.connect(SIGNAL('clicked()')) { play() }
  @op_button_layout.addWidget(@play)
  @step_forward = Qt::PushButton.new(Cosmos.get_icon('fast_forward-26.png'), '')
  @step_forward_timer = Qt::Timer.new
  @step_forward_timeout = 100
  @step_forward_timer.connect(SIGNAL('timeout()')) { step_forward(); @step_forward_timeout = (@step_forward_timeout / 2).to_i; @step_forward_timer.start(@step_forward_timeout) }
  @step_forward.connect(SIGNAL('pressed()')) { step_forward(); @step_forward_timeout = 300; @step_forward_timer.start(@step_forward_timeout) }
  @step_forward.connect(SIGNAL('released()')) { @step_forward_timer.stop }
  @op_button_layout.addWidget(@step_forward)
  @move_end = Qt::PushButton.new(Cosmos.get_icon('end-26.png'), '')
  @move_end.connect(SIGNAL('clicked()')) { move_end() }
  @op_button_layout.addWidget(@move_end)
  @op_layout.addLayout(@op_button_layout)

  # Speed Selection
  @playback_delay = nil
  @speed_select = Qt::ComboBox.new
  @variants = []
  @variants << Qt::Variant.new(nil)
  @speed_select.addItem("No Delay", @variants[-1])
  @variants << Qt::Variant.new(0.001)
  @speed_select.addItem("1ms Delay", @variants[-1])
  @variants << Qt::Variant.new(0.002)
  @speed_select.addItem("2ms Delay", @variants[-1])
  @variants << Qt::Variant.new(0.005)
  @speed_select.addItem("5ms Delay", @variants[-1])
  @variants << Qt::Variant.new(0.01)
  @speed_select.addItem("10ms Delay", @variants[-1])
  @variants << Qt::Variant.new(0.05)
  @speed_select.addItem("50ms Delay", @variants[-1])
  @variants << Qt::Variant.new(0.125)
  @speed_select.addItem("125ms Delay", @variants[-1])
  @variants << Qt::Variant.new(0.25)
  @speed_select.addItem("250ms Delay", @variants[-1])
  @variants << Qt::Variant.new(0.5)
  @speed_select.addItem("500ms Delay", @variants[-1])
  @variants << Qt::Variant.new(1.0)
  @speed_select.addItem("1s Delay", @variants[-1])
  @variants << Qt::Variant.new(-1.0)
  @speed_select.addItem("Realtime", @variants[-1])
  @speed_select.setMaxVisibleItems(11)
  @speed_select.connect(SIGNAL('currentIndexChanged(int)')) do
    @playback_delay = @speed_select.itemData(@speed_select.currentIndex).value
  end
  @speed_layout = Qt::FormLayout.new()
  @speed_layout.addRow("&Delay:", @speed_select)
  @status = Qt::LineEdit.new
  @status.setReadOnly(true)
  @status.setText('Stopped')
  @speed_layout.addRow("&Status:", @status)
  @op_layout.addLayout(@speed_layout)
  @log_layout.addWidget(@op)

  @file_pos = Qt::GroupBox.new(tr("File Position"))
  @file_pos_layout = Qt::VBoxLayout.new(@file_pos)
  @slider = Qt::Slider.new(Qt::Horizontal)
  @slider.setRange(0, 10000)
  @slider.setTickInterval(1000)
  @slider.setTickPosition(Qt::Slider::TicksBothSides)
  @slider.setTracking(false)
  @slider.connect(SIGNAL('sliderReleased()')) { slider_released() }
  @time_layout = Qt::HBoxLayout.new()
  @start_time = StringChooser.new(self, 'Start:', '', 200, true, true, Qt::AlignCenter | Qt::AlignVCenter)
  @end_time = StringChooser.new(self, 'End:', '', 200, true, true, Qt::AlignCenter | Qt::AlignVCenter)
  @current_time = StringChooser.new(self, 'Current:', '', 200, true, true, Qt::AlignCenter | Qt::AlignVCenter)
  @time_layout.addWidget(@start_time)
  @time_layout.addWidget(@current_time)
  @time_layout.addWidget(@end_time)
  @file_pos_layout.addLayout(@time_layout)
  @file_pos_layout.addWidget(@slider)
  @log_layout.addWidget(@file_pos)
  @top_layout.addWidget(@log_widget)

  # Add the message output
  @output = Qt::PlainTextEdit.new
  @output.setReadOnly(true)
  @output.setMaximumBlockCount(100)

  @top_layout.addWidget(@output, 500)

  # Override stdout to the message window
  # All code attempting to print into the GUI must use $stdout rather than STDOUT
  @string_output = StringIO.new("", "r+")
  $stdout = @string_output
  Logger.level = Logger::INFO

  @central_widget.setLayout(@top_layout)
end

#initialize_menus ⇒ Object 



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# File 'lib/cosmos/tools/replay/replay.rb', line 61

def initialize_menus
  # File Menu
  @file_menu = menuBar.addMenu(tr('&File'))
  @file_menu.addAction(@exit_action)

  # Help Menu
  @about_string = "Telemetry Viewer provides a view of every telemetry packet in the system."
  @about_string << " Packets can be viewed in numerous represenations ranging from the raw data to formatted with units."

  initialize_help_menu()
end

#move_end ⇒ Object 



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# File 'lib/cosmos/tools/replay/replay.rb', line 307

def move_end
  if @log_filename and !@playback_thread
    packet = read_at_index(@packet_offsets.length - 1, :FORWARD)
    @end_time.value = packet.received_time.formatted if packet and packet.received_time
  else
    stop()
  end
end

#move_start ⇒ Object 



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# File 'lib/cosmos/tools/replay/replay.rb', line 258

def move_start
  if @log_filename and !@playback_thread
    packet = read_at_index(0, :FORWARD)
    @start_time.value = packet.received_time.formatted if packet and packet.received_time
  else
    stop()
  end
end

#play ⇒ Object 



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# File 'lib/cosmos/tools/replay/replay.rb', line 289

def play
  if @log_filename and !@playback_thread
    @playback_index = 1 if @playback_index < 0
    start_playback(:FORWARD)
  else
    stop()
  end
end

#process_server_messages(options) ⇒ Object 



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# File 'lib/cosmos/tools/replay/replay.rb', line 454

def process_server_messages(options)
  # Start thread to read server messages
  @output_thread = Thread.new do
    begin
      while !@ready
        sleep(1)
      end
      while true
        if @string_output.string[-1..-1] == "\n"
          Qt.execute_in_main_thread(true) do
            string = @string_output.string.clone
            @string_output.string = @string_output.string[string.length..-1]
            string.each_line {|out_line| @output.add_formatted_text(out_line) }
            @output.flush
          end
        end
        sleep(1)
      end
    rescue Exception => error
      Qt.execute_in_main_thread(true) do
        ExceptionDialog.new(self, error, "#{options.title}: Messages Thread")
      end
    end
  end
end

#read_at_index(index, direction) ⇒ Object 



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# File 'lib/cosmos/tools/replay/replay.rb', line 365

def read_at_index(index, direction)
  packet_offset = nil
  packet_offset = @packet_offsets[index] if index >= 0
  if packet_offset
    # Read the packet
    packet = @packet_log_reader.read_at_offset(packet_offset, false)
    handle_packet(packet)

    # Adjust index for next read
    if direction == :FORWARD
      @playback_index = index + 1
    else
      @playback_index = index - 1
    end
    update_slider_and_current_time(packet)

    return packet
  else
    return nil
  end
end

#reverse_play ⇒ Object 



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# File 'lib/cosmos/tools/replay/replay.rb', line 276

def reverse_play
  if @log_filename and !@playback_thread
    @playback_index = @packet_offsets.length - 2 if @playback_index >= @packet_offsets.length
    start_playback(:BACKWARD)
  else
    stop()
  end
end

#select_log_file ⇒ Object 



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# File 'lib/cosmos/tools/replay/replay.rb', line 210

def select_log_file
  unless @playback_thread
    selection = Qt::FileDialog.getOpenFileName(
      self, "Select Log File", @log_directory, Cosmos::TLM_FILE_PATTERN)
    if selection
      stop()
      @log_directory = File.dirname(selection)
      @log_name.text = selection
      @log_filename = selection

      System.telemetry.reset

      @cancel = false
      ProgressDialog.execute(self, 'Analyzing Log File', 500, 10, true, false, true, false, true) do |progress_dialog|
        progress_dialog.append_text("Processing File: #{selection}\n")
        progress_dialog.set_overall_progress(0.0)
        progress_dialog.cancel_callback = method(:cancel_callback)
        progress_dialog.enable_cancel_button
        Cosmos.check_log_configuration(@packet_log_reader, selection)
        @packet_offsets = @packet_log_reader.packet_offsets(selection, lambda {|percentage| progress_dialog.set_overall_progress(percentage); @cancel})
        @playback_index = 0
        update_slider_and_current_time(nil)
        @packet_log_reader.open(selection)
        progress_dialog.close_done
      end

      if ProgressDialog.canceled?
        @packet_log_reader.close
        @log_name.text = ''
        @log_filename = nil
        @packet_offsets = []
        @playback_index = 0
        @start_time.value = ''
        @current_time.value = ''
        @end_time.value = ''
      else
        move_end()
        move_start()
      end
    end
  end
end

#slider_released ⇒ Object 



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# File 'lib/cosmos/tools/replay/replay.rb', line 316

def slider_released
  if @log_filename and !@playback_thread
    read_at_index(((@slider.sliderPosition / 10000.0) * (@packet_offsets.length - 1)).to_i, :FORWARD)
  end
end

#start_playback(direction) ⇒ Object 



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# File 'lib/cosmos/tools/replay/replay.rb', line 322

def start_playback(direction)
  @playback_thread = Thread.new do
    error = nil
    begin
      @playing = true
      Qt.execute_in_main_thread(true) do
        @status.setText('Playing')
      end
      previous_packet = nil
      while (@playing)
        if @playback_delay
          packet_start = Time.now
          packet = read_at_index(@playback_index, direction)
          break unless packet
          delay_time = 0.0
          if @playback_delay > 0.0
            delay_time = @playback_delay - (Time.now - packet_start)
          elsif previous_packet and packet.received_time and previous_packet.received_time
            if direction == :FORWARD
              delay_time = packet.received_time - previous_packet.received_time - (Time.now - packet_start)
            else
              delay_time = previous_packet.received_time - packet.received_time - (Time.now - packet_start)
            end
          end
          sleep(delay_time) if delay_time > 0.0
          previous_packet = packet
        else
          packet = read_at_index(@playback_index, direction)
          break unless packet
        end
      end
    rescue Exception => error
      Qt.execute_in_main_thread(true) {|| ExceptionDialog.new(self, error, "Playback Thread")}
    ensure
      Qt.execute_in_main_thread(true) do
        @status.setText('Stopped')
      end
      @playing = false
      @playback_thread = nil
    end
  end
end

#step_back ⇒ Object 



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# File 'lib/cosmos/tools/replay/replay.rb', line 267

def step_back
  if @log_filename and !@playback_thread
    @playback_index = @packet_offsets.length - 2 if @playback_index >= @packet_offsets.length
    read_at_index(@playback_index, :BACKWARD)
  else
    stop()
  end
end

#step_forward ⇒ Object 



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# File 'lib/cosmos/tools/replay/replay.rb', line 298

def step_forward
  if @log_filename and !@playback_thread
    @playback_index = 1 if @playback_index < 0
    read_at_index(@playback_index, :FORWARD)
  else
    stop()
  end
end

#stop ⇒ Object 



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# File 'lib/cosmos/tools/replay/replay.rb', line 285

def stop
  @playing = false
end

#update_slider_and_current_time(packet) ⇒ Object 



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# File 'lib/cosmos/tools/replay/replay.rb', line 387

def update_slider_and_current_time(packet)
  Qt.execute_in_main_thread(false) do
    value = (((@playback_index - 1) / @packet_offsets.length.to_f) * 10000).to_i
    @slider.setSliderPosition(value)
    @slider.setValue(value)
    @current_time.value = packet.received_time.formatted if packet and packet.received_time
  end
end