Class: Cosmos::DataViewer

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

Class Method Summary collapse

Instance Method Summary collapse

Methods inherited from QtTool

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

Constructor Details

#initialize(options) ⇒ DataViewer

Returns a new instance of DataViewer.



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# File 'lib/cosmos/tools/data_viewer/data_viewer.rb', line 32

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

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

  # Initialize instance variables
  @auto_start = false
  @pause = false
  @log_file_directory = System.paths['LOGS']
  @tlm_log_system = nil
  @subscription_thread = nil
  @subscription_id = nil
  @packet_log_reader = System.default_packet_log_reader.new
  @time_start = nil
  @time_end = nil
  @log_filenames = []
  @cancel_thread = false
  @sleeper = Sleeper.new

  # Process config file and create a tab for each data viewer component
  @component_mutex = Mutex.new
  @components = []
  @packets = []
  @packet_to_components_mapping = {}
  @config_filename = File.join(Cosmos::USERPATH, 'config', 'tools', 'data_viewer', options.config_file)
  process_config()

  # Load System Definition and Event Data
  Splash.execute(self) do |splash|
    Qt.execute_in_main_thread(true) do
      ConfigParser.splash = splash
      System.telemetry
      @components.each do |component|
        # Create tab for each component
        component.initialize_gui
        @tab_book.addTab(component, component.tab_name)
      end
      if @auto_start
        handle_start()
      end
      ConfigParser.splash = nil
    end
  end

  # Add GUI Update Timeout
  @timer = Qt::Timer.new(self)
  @timer.connect(SIGNAL('timeout()')) { update_gui() }
  @timer.method_missing(:start, 100)
end

Class Method Details

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

Class methods



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# File 'lib/cosmos/tools/data_viewer/data_viewer.rb', line 608

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.width = 550
      options.height = 500
      options.title = "Data Viewer"
      options.config_file = 'data_viewer.txt'
      option_parser.separator "Data Viewer 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/data_viewer/data_viewer.rb', line 469

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

#closeEvent(event) ⇒ Object 



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# File 'lib/cosmos/tools/data_viewer/data_viewer.rb', line 489

def closeEvent(event)
  # Stop GUI update timeout
  @pause = true

  # Stop Processing Packets
  handle_stop()

  # Shutdown each component
  @component_mutex.synchronize do
    @components.each {|component| component.shutdown}
  end

  # Give things time to complete
  sleep(0.1)

  # Standard COSMOS Shutdown
  shutdown_cmd_tlm()

  # Accept closure
  super(event)
end

#context_menu(point) ⇒ Object 



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# File 'lib/cosmos/tools/data_viewer/data_viewer.rb', line 238

def context_menu(point)
  index = 0
  (0..@tab_book.tabBar.count).each do |i|
    index = i if @tab_book.tabBar.tabRect(i).contains(point)
  end

  return if (index == @tab_book.tabBar.count)

  # Bring the right clicked tab to the front
  @tab_book.setCurrentIndex(index)
  @tab_menu.exec(@tab_book.mapToGlobal(point))
end

#current_component ⇒ Object 



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# File 'lib/cosmos/tools/data_viewer/data_viewer.rb', line 176

def current_component
  @component_mutex.synchronize do
    yield @components[@tab_book.currentIndex()]
  end
end

#delete_component(index) ⇒ Object 



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# File 'lib/cosmos/tools/data_viewer/data_viewer.rb', line 554

def delete_component(index)
  @component_mutex.synchronize do
    # Get the component to be deleted
    component = @components[index]

    # Delete from the components array
    @components.delete_at(index)

    # Delete from mapping
    @packet_to_components_mapping.each do |key, components|
      components.delete(component)
    end
  end
end

#enable_disable_component_packet(index, target_name, packet_name, enabled) ⇒ Object 



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# File 'lib/cosmos/tools/data_viewer/data_viewer.rb', line 569

def enable_disable_component_packet(index, target_name, packet_name, enabled)
  @component_mutex.synchronize do
    # Get the component to be deleted
    component = @components[index]

    key = target_name + ' ' + packet_name
    if enabled
      # Add to mapping
      components = @packet_to_components_mapping[key]
      components << component unless components.include?(component)
    else
      # Delete from mapping
      components = @packet_to_components_mapping[key]
      components.delete(component)
    end
  end
end

#find ⇒ Object 



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# File 'lib/cosmos/tools/data_viewer/data_viewer.rb', line 182

def find
  unless @find_dialog
    @find_dialog = FindReplaceDialog.new(@script, false)
    @find_dialog.connect(SIGNAL('find_next()')) do
      current_component do |component|
        component.find(@find_dialog)
      end
    end
  end
  @find_dialog.show
  @find_dialog.raise
  @find_dialog.activateWindow
end

#find_next ⇒ Object 



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# File 'lib/cosmos/tools/data_viewer/data_viewer.rb', line 196

def find_next
  current_component do |component|
    component.find_next(@find_dialog) if @find_dialog
  end
end

#find_previous ⇒ Object 



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# File 'lib/cosmos/tools/data_viewer/data_viewer.rb', line 202

def find_previous
  current_component do |component|
    component.find_previous(@find_dialog) if @find_dialog
  end
end

#graceful_kill ⇒ Object 



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# File 'lib/cosmos/tools/data_viewer/data_viewer.rb', line 331

def graceful_kill
  @cancel_thread = true
  @sleeper.cancel
  script_disconnect() # This will break out of get_packet_data
  Qt::CoreApplication.processEvents
end

#handle_open_log_file ⇒ Object 



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# File 'lib/cosmos/tools/data_viewer/data_viewer.rb', line 403

def handle_open_log_file
  # Prompt user for filename
  packet_log_dialog = PacketLogDialog.new(self, 'Open Log File(s):', @log_file_directory, @packet_log_reader, [], nil, false, true, true, Cosmos::TLM_FILE_PATTERN)
  begin
    packet_log_dialog.time_start = @time_start
    packet_log_dialog.time_end = @time_end
    case packet_log_dialog.exec
    when Qt::Dialog::Accepted
      @packet_log_reader = packet_log_dialog.packet_log_reader
      @log_filenames = packet_log_dialog.filenames.sort
      @time_start = packet_log_dialog.time_start
      @time_end = packet_log_dialog.time_end
      @log_file_directory = File.dirname(@log_filenames[0])
      @log_file_directory += '/' unless @log_file_directory[-1..-1] == '\\'

      # Stop realtime collection
      handle_stop()

      # Reset components
      handle_reset()

      @cancel_progress = false
      ProgressDialog.execute(self, 'Processing Log File', 500, 200, @log_filenames.length > 1, true, true, true, true) do |dialog|
        dialog.cancel_callback = method(:cancel_callback)
        dialog.enable_cancel_button

        @log_filenames.each_with_index do |filename, file_index|
          break if @cancel_progress
          Qt.execute_in_main_thread(true) do
            self.setWindowTitle("Data Viewer : #{filename}")
          end

          file_size = File.size(filename).to_f
          dialog.append_text("Processing: #{filename}")

          @packet_log_reader.each(filename, true, @time_start, @time_end) do |packet|
            break if @cancel_progress
            progress = @packet_log_reader.bytes_read.to_f / file_size
            dialog.set_step_progress(progress)

            # Route packet to its component(s)
            index = packet.target_name + ' ' + packet.packet_name
            components = @packet_to_components_mapping[index]
            if components
              @component_mutex.synchronize do
                components.each do |component|
                  component.process_packet(packet)
                end
              end
            end
          end

          dialog.set_overall_progress((file_index + 1).to_f / @log_filenames.length) if @log_filenames.length > 1
        end

        dialog.append_text("Done!")
        dialog.set_step_progress(1.0)
        dialog.set_overall_progress(1.0) if @log_filenames.length > 1
        dialog.complete
      end
    end
  ensure
    packet_log_dialog.dispose if packet_log_dialog
  end
end

#handle_pause ⇒ Object 



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# File 'lib/cosmos/tools/data_viewer/data_viewer.rb', line 374

def handle_pause
  @pause = true
  if @subscription_thread
    @realtime_button_bar.state = 'Paused'
  end
end

#handle_reset ⇒ Object 



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# File 'lib/cosmos/tools/data_viewer/data_viewer.rb', line 338

def handle_reset
  @component_mutex.synchronize do
    @components.each do |component|
      component.reset
    end
  end
  System.telemetry.reset
end

#handle_start ⇒ Object 



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# File 'lib/cosmos/tools/data_viewer/data_viewer.rb', line 347

def handle_start
  if windowTitle() != 'Data Viewer'
    # Clear Title
    setWindowTitle('Data Viewer')

    # Return to default configuration
    # Show splash during possible reconfiguration
    Splash.execute(self) do |splash|
      ConfigParser.splash = splash
      System.load_configuration
      ConfigParser.splash = nil
    end

    # Reset Components
    handle_reset()
  end

  # Restart GUI Updates if necessary
  if @pause
    @pause = false
    @timer.method_missing(:start, 100)
  end

  # Restart Subscription Thread if necessary
  start_subscription_thread()
end

#handle_stop ⇒ Object 



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# File 'lib/cosmos/tools/data_viewer/data_viewer.rb', line 381

def handle_stop
  # Shutdown packet subscription thread
  kill_subscription_thread()

  # Unsubscribe from subscription
  if @subscription_id
    begin
      unsubscribe_packet_data(@subscription_id)
    rescue DRb::DRbConnError
      # Do Nothing
    end
  end

  # Restart GUI Updates if necessary
  if @pause
    @pause = false
    @timer.method_missing(:start, 100)
  end

  @realtime_button_bar.state = 'Stopped'
end

#handle_tab_change(index) ⇒ Object 



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# File 'lib/cosmos/tools/data_viewer/data_viewer.rb', line 208

def handle_tab_change(index)
  # Remove existing actions
  @tab_menu_actions.each do |action|
    @tab_menu.removeAction(action)
    action.dispose
  end
  @tab_menu_actions = []

  # Add new actions
  unless @components.empty?
    @component_mutex.synchronize do
      component = @components[index]
      component.packets.each do |target_name, packet_name|
        action = Qt::Action.new("#{target_name} #{packet_name}", @tab_menu)
        action.setCheckable(true)
        key = target_name + ' ' + packet_name
        components = @packet_to_components_mapping[key]
        if components.include?(component)
          action.setChecked(true)
        else
          action.setChecked(false)
        end
        action.connect(SIGNAL('triggered()')) { enable_disable_component_packet(index, target_name, packet_name, action.checked?) }
        @tab_menu.addAction(action)
        @tab_menu_actions << action
      end
    end
  end
end

#initialize_actions ⇒ Object 



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# File 'lib/cosmos/tools/data_viewer/data_viewer.rb', line 86

def initialize_actions
  super()

  # File Menu Actions
  @open_log = Qt::Action.new(tr('&Open Log File'), self)
  @open_log_keyseq = Qt::KeySequence.new(tr('Ctrl+O'))
  @open_log.shortcut  = @open_log_keyseq
  @open_log.statusTip = tr('Open telemetry log file for processing')
  @open_log.connect(SIGNAL('triggered()')) { handle_open_log_file() }

  @handle_reset = Qt::Action.new(tr('&Reset'), self)
  @handle_reset_keyseq = Qt::KeySequence.new(tr('Ctrl+R'))
  @handle_reset.shortcut  = @handle_reset_keyseq
  @handle_reset.statusTip = tr('Reset Components')
  @handle_reset.connect(SIGNAL('triggered()')) { handle_reset() }

  # Search Actions
  @search_find = Qt::Action.new(Cosmos.get_icon('search.png'), tr('&Find'), self)
  @search_find_keyseq = Qt::KeySequence.new(tr('Ctrl+F'))
  @search_find.shortcut  = @search_find_keyseq
  @search_find.statusTip = tr('Find text')
  @search_find.connect(SIGNAL('triggered()')) { find() }

  @search_find_next = Qt::Action.new(tr('Find &Next'), self)
  @search_find_next_keyseq = Qt::KeySequence.new(tr('F3'))
  @search_find_next.shortcut  = @search_find_next_keyseq
  @search_find_next.statusTip = tr('Find next instance')
  @search_find_next.connect(SIGNAL('triggered()')) { find_next() }

  @search_find_previous = Qt::Action.new(tr('Find &Previous'), self)
  @search_find_previous_keyseq = Qt::KeySequence.new(tr('Shift+F3'))
  @search_find_previous.shortcut  = @search_find_previous_keyseq
  @search_find_previous.statusTip = tr('Find previous instance')
  @search_find_previous.connect(SIGNAL('triggered()')) { find_previous() }

  # Tab Menu Actions
  @delete_tab = Qt::Action.new(Cosmos.get_icon('delete_tab.png'), tr('&Delete Tab'), self)
  @delete_tab.statusTip = tr('Delete active tab')
  @delete_tab.connect(SIGNAL('triggered()')) { on_tab_delete() }
end

#initialize_central_widget ⇒ Object 



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# File 'lib/cosmos/tools/data_viewer/data_viewer.rb', line 152

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

  # Create the top level vertical layout
  @top_layout = Qt::VBoxLayout.new(@central_widget)

  # Realtime Button Bar
  @realtime_button_bar = RealtimeButtonBar.new(self)
  @realtime_button_bar.start_callback = method(:handle_start)
  @realtime_button_bar.pause_callback = method(:handle_pause)
  @realtime_button_bar.stop_callback  = method(:handle_stop)
  @realtime_button_bar.state = 'Stopped'
  @top_layout.addWidget(@realtime_button_bar)

  # Create tab book
  @tab_book = Qt::TabWidget.new
  @tab_book.setContextMenuPolicy(Qt::CustomContextMenu)
  connect(@tab_book, SIGNAL('currentChanged(int)'), self, SLOT('handle_tab_change(int)'))
  connect(@tab_book, SIGNAL('customContextMenuRequested(const QPoint&)'), self, SLOT('context_menu(const QPoint&)'))
  @top_layout.addWidget(@tab_book)
end

#initialize_menus ⇒ Object 



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# File 'lib/cosmos/tools/data_viewer/data_viewer.rb', line 127

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

  # Tab Menu
  @tab_menu = menuBar.addMenu(tr('&Tab'))
  @tab_menu.addAction(@delete_tab)
  @tab_menu.addSeparator()
  @tab_menu_actions = []

  # Search Menu
  view_menu = menuBar.addMenu(tr('&Search'))
  view_menu.addAction(@search_find)
  view_menu.addAction(@search_find_next)
  view_menu.addAction(@search_find_previous)

  # Help Menu
  @about_string = "Data Viewer is designed to allow users view data that is not easily displayed on telemetry screens."
  initialize_help_menu()
end

#kill_subscription_thread ⇒ Object 



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# File 'lib/cosmos/tools/data_viewer/data_viewer.rb', line 326

def kill_subscription_thread
  Cosmos.kill_thread(self, @subscription_thread)
  @subscription_thread = nil
end

#on_tab_delete ⇒ Object

Handles deleting the current tab



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# File 'lib/cosmos/tools/data_viewer/data_viewer.rb', line 588

def on_tab_delete
  if @tab_book.currentIndex() and @tab_book.currentIndex() >= 0
    case Qt::MessageBox.warning(self, 'Warning!', "Are you sure you want to delete the active tab?", Qt::MessageBox::Yes | Qt::MessageBox::No, Qt::MessageBox::No)
    when Qt::MessageBox::Yes
      # Remove component
      tab_index = @tab_book.currentIndex()
      delete_component(tab_index)
      @tab_book.removeTab(tab_index)

      statusBar.showMessage(tr("Tab Deleted"))
    end
  else
    Qt::MessageBox.information(self, 'Info', "No tabs exist")
  end
end

#process_config ⇒ Object 



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# File 'lib/cosmos/tools/data_viewer/data_viewer.rb', line 511

def process_config
  # ensure the file exists
  unless test ?f, @config_filename
    raise "Configuration File Does not Exist: #{@config_filename}"
  end

  parser = ConfigParser.new
  parser.parse_file(@config_filename) do |keyword, params|
    case keyword

    when 'AUTO_START'
      usage = "#{keyword}"
      parser.verify_num_parameters(0, 0, usage)
      @auto_start = true

    when 'COMPONENT'
      usage = "#{keyword} <tab name> <component class filename> <component specific options...>"
      parser.verify_num_parameters(2, nil, usage)
      component_class = Cosmos.require_class(params[1])
      if params.length >= 3
        @components << component_class.new(self, params[0], *params[2..-1])
      else
        @components << component_class.new(self, params[0])
      end

    when 'PACKET'
      usage = "#{keyword} <target_name> <packet_name>"
      parser.verify_num_parameters(2, 2, usage)
      target_name = params[0].upcase
      packet_name = params[1].upcase
      @packets << [target_name, packet_name]
      @components[-1].add_packet(target_name, packet_name)
      index = target_name + ' ' + packet_name
      @packet_to_components_mapping[index] ||= []
      @packet_to_components_mapping[index] << @components[-1]

    # Unknown keyword
    else
      raise "Unhandled keyword: #{keyword}" if keyword
    end
  end
end

#start_subscription_thread ⇒ Object 



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# File 'lib/cosmos/tools/data_viewer/data_viewer.rb', line 251

def start_subscription_thread
  unless @subscription_thread
    # Start Thread to Gather Events
    @subscription_thread = Thread.new do
      @cancel_thread = false
      @sleeper = Sleeper.new
      if !@packets.empty?
        begin
          while true
            break if @cancel_thread
            begin
              @subscription_id = subscribe_packet_data(@packets, 10000)
              break if @cancel_thread
              if @pause
                Qt.execute_in_main_thread(true) { @realtime_button_bar.state = 'Paused' }
              else
                Qt.execute_in_main_thread(true) { @realtime_button_bar.state = 'Running' }
              end
              Qt.execute_in_main_thread(true) { statusBar.showMessage("Connected to Command and Telemetry Server: #{Time.now.formatted}") }
            rescue DRb::DRbConnError
              break if @cancel_thread
              Qt.execute_in_main_thread(true) do
                @realtime_button_bar.state = 'Connecting'
                statusBar.showMessage(tr("Error Connecting to Command and Telemetry Server"))
              end
              break if @sleeper.sleep(1)
              break if @cancel_thread
              retry
            end

            while true
              break if @cancel_thread
              begin
                # Get a subscribed to packet
                packet_data, target_name, packet_name, received_time, received_count = get_packet_data(@subscription_id)

                # Put packet data into its packet
                packet = System.telemetry.packet(target_name, packet_name)
                packet.buffer = packet_data
                packet.received_time = received_time
                packet.received_count = received_count

                # Route packet to its component(s)
                index = packet.target_name + ' ' + packet.packet_name
                @component_mutex.synchronize do
                  components = @packet_to_components_mapping[index]
                  if components
                    components.each do |component|
                      component.process_packet(packet)
                    end
                  end
                end
              rescue DRb::DRbConnError
                break if @cancel_thread
                Qt.execute_in_main_thread(true) { statusBar.showMessage(tr("Error Connecting to Command and Telemetry Server")) }
                break # Let outer loop resubscribe
              rescue RuntimeError => error
                raise error unless error.message =~ /queue/
                break if @cancel_thread
                Qt.execute_in_main_thread(true) { statusBar.showMessage(tr("Connection Dropped by Command and Telemetry Server: #{Time.now.formatted}")) }
                break # Let outer loop resubscribe
              end
            end
          end
        rescue Exception => error
          break if @cancel_thread
          Qt.execute_in_main_thread(true) {|| ExceptionDialog.new(self, error, "Data Viewer : Subscription Thread")}
        end
      end # if [email protected]
    end
  else
    Qt.execute_in_main_thread(true) { @realtime_button_bar.state = 'Running' }
  end
end

#update_gui ⇒ Object 



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# File 'lib/cosmos/tools/data_viewer/data_viewer.rb', line 474

def update_gui
  if @pause
    @timer.method_missing(:stop)
  else
    Qt.execute_in_main_thread(true) do
      @component_mutex.synchronize do
        @components.each do |component|
          break if @pause
          component.update_gui
        end
      end
    end
  end
end