Module: Eclair::Grid

Extended by:
Grid
Includes:
CommonHelper
Included in:
Grid
Defined in:
lib/eclair/grid.rb

Constant Summary collapse

HEADER_ROWS = 
4
SORT_FUNCTIONS = 
{
  "Name" => lambda {|i| [i.name.downcase, -i.launch_time.to_i]}, 
}

Instance Method Summary collapse

Methods included from CommonHelper

#config, included

Instance Method Details

#assign ⇒ Object 



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# File 'lib/eclair/grid.rb', line 63

def assign
  sort_function = lambda {|i| [i.name.downcase, -i.launch_time.to_i]}
  @group_map ||= {}
  if config.group_by
    Aws.instances.group_by(&config.group_by).each do |group, instances|
      if @group_map[group]
        group_cell  = @group_map[group]
      else
        col = columns[target_col]
        group_cell = Group.new(group, col)
        col << group_cell
        @group_map[group] = group_cell
      end
      instances.each do |i|
        unless group_cell.find{|j| j.instance_id == i.instance_id}
          obj = Instance.new(i.instance_id, col)
          group_cell << obj
        end
      end
      group_cell.items.sort_by!(&sort_function)
    end
  else
    col_limit = (Aws.instances.count - 1) / config.columns + 1
    iter = Aws.instances.map{|i| Instance.new(i.instance_id)}.sort_by(&sort_function).each
    columns.each do |col|
      col_limit.times do 
        begin
          i = iter.next
          i.column = col
          col << i
        rescue StopIteration
          break
        end
      end
    end
  end
end

#cancel_search ⇒ Object 



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# File 'lib/eclair/grid.rb', line 243

def cancel_search
  x,y = @rollback_cursor
  move_cursor(x: x, y: y, mode: @rollback_mode)
end

#cell_width ⇒ Object 



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# File 'lib/eclair/grid.rb', line 53

def cell_width
  stdscr.maxx/column_count
end

#change_sort ⇒ Object 



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# File 'lib/eclair/grid.rb', line 334

def change_sort
  stored_cursor = cursor
  sort_function = next_sort_function
  columns.each do |column| 
    column.groups.each do |group|
      group.items.sort_by!(&sort_function)
    end
  end
  @x, @y = stored_cursor.x, stored_cursor.y
  render_all
end

#column_count ⇒ Object 



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# File 'lib/eclair/grid.rb', line 148

def column_count
  columns.count{|col| !col.empty?}
end

#columns ⇒ Object 



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# File 'lib/eclair/grid.rb', line 152

def columns
  @columns ||= config.columns.times.map{|idx| Column.new(idx)}.to_a
end

#cursor ⇒ Object 



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# File 'lib/eclair/grid.rb', line 211

def cursor
  @x ||= -1
  @y ||= -1
  if @x >=0 && @y >= 0
    columns[@x][@y]
  else
    nil
  end
end

#cursor_inspect ⇒ Object 



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# File 'lib/eclair/grid.rb', line 310

def cursor_inspect
  close_screen
  LessViewer.show cursor.info
  render_all
end

#debug ⇒ Object 



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# File 'lib/eclair/grid.rb', line 316

def debug
  trap("INT") { raise Interrupt }
  close_screen
  binding.pry      
  render_all
  trap("INT") { exit }
end

#end_search ⇒ Object 



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# File 'lib/eclair/grid.rb', line 234

def end_search
  if cursor
    move_cursor(mode: @rollback_mode)
    @mode = @rollback_mode
  else
    cancel_search
  end
end

#maxy ⇒ Object 



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# File 'lib/eclair/grid.rb', line 11

def maxy
  stdscr.maxy - HEADER_ROWS
end

#mode ⇒ Object 



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# File 'lib/eclair/grid.rb', line 169

def mode
  @mode ||= :navi
end

#move(key) ⇒ Object 



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# File 'lib/eclair/grid.rb', line 186

def move key
  end_search if mode == :search
  mx,my = {
    KEY_UP => [0,-1],
    "k" => [0,-1],
    KEY_DOWN => [0,1],
    "j" => [0,1],
    KEY_LEFT => [-1,0],
    "h" => [-1,0],
    KEY_RIGHT => [1,0],
    "l" => [1,0],
  }[key]

  newx = (@x + mx) % column_count
  newy = (@y + my - columns[@x].scroll + columns[newx].scroll)
  if my != 0
    newy %= columns[newx].count 
  end
  if newy >= columns[newx].count
    newy = columns[newx].count-1
  end

  move_cursor(x: newx, y: newy)
end

#move_cursor(**options, &block) ⇒ Object 



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# File 'lib/eclair/grid.rb', line 249

def move_cursor **options, &block
  if cursor
    cursor.toggle_select if mode == :navi
    cursor.decurrent
  end

  new_mode = options.delete(:mode)
  if new_mode && mode != new_mode
    case new_mode
    when :search
      start_search
    end
    @mode = new_mode
  end

  if block
    @x, @y = block.call
  else
    @x = options.delete(:x) || @x
    @y = options.delete(:y) || @y
  end

  if cursor
    cursor.toggle_select if mode == :navi
    cursor.current
  end
end

#next_sort_function ⇒ Object 



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# File 'lib/eclair/grid.rb', line 324

def next_sort_function
  @sort_function_idx ||= -1
  @sort_function_idx = (@sort_function_idx + 1) % SORT_FUNCTIONS.count
  SORT_FUNCTIONS.values[@sort_function_idx]
end

#query ⇒ Object 



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# File 'lib/eclair/grid.rb', line 221

def query
  return nil if @search_str == ""
  result = columns.map(&:expand).flatten.grep(Instance).map(&:name).max_by{|name| name.score @search_str}
  return nil if result.score(@search_str) == 0.0
  result
end

#reload ⇒ Object 



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# File 'lib/eclair/grid.rb', line 346

def reload
  clear
  addstr("reloading")
  refresh
  Aws.reload_instances
  assign
  render_all
end

#render_all ⇒ Object 



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# File 'lib/eclair/grid.rb', line 101

def render_all
  clear
  columns.each do |cols|
    cols.each do |c|
      c.render
    end
  end
  render_header
  refresh
end

#render_header ⇒ Object 



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# File 'lib/eclair/grid.rb', line 15

def render_header
  if mode == :search
    if cursor
      header = ["Searching #{@search_str}", "Found #{cursor.name}", ""]
    else
      header = ["Searching #{@search_str}", "None Found", ""]
    end
  else
    header = cursor.header
  end

  header.each_with_index do |line,i|
    setpos(i,0)
    clrtoeol
    addstr(line)
  end
  render_help
end

#render_help ⇒ Object 



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# File 'lib/eclair/grid.rb', line 34

def render_help
  setpos(3,0)
  clrtoeol

  helps = {
    "Enter" => "SSH",
    "Space" => "Select",
    "[a-z0-9]" =>  "Search",
    "?" => "Inspect",
    "!" => "Open Ruby REPL",
  }

  attron(Color.fetch(*config.help_color)) do
    addstr helps.map{ |key, action|   
      " #{key} => #{action}"
    }.join("    ").slice(0,stdscr.maxx).ljust(stdscr.maxx)
  end
end

#resize ⇒ Object 



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# File 'lib/eclair/grid.rb', line 304

def resize
  columns.each{|col| col.scroll = 0}
  render_all
  cursor.check_scroll
end

#rows ⇒ Object 



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# File 'lib/eclair/grid.rb', line 156

def rows
  columns.map(&:count).max
end

#search(key) ⇒ Object 



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# File 'lib/eclair/grid.rb', line 277

def search key
  @search_str ||= ""
  
  move_cursor(mode: :search) do 
    if key
      @search_str = @search_str+key
    else
      @search_str.chop!
    end

    goto = query

    result = nil
    columns.each do |col|
      target = col.find {|item| item.is_a?(Instance) && item.name == goto}
      if target
        result = [target.x, target.y]
        break
      end
    end

    result || [-1,-1]
  end
  
  render_header 
end

#select ⇒ Object 



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# File 'lib/eclair/grid.rb', line 173

def select
  end_search if mode == :search
  if mode == :navi
    @mode = :select
    cursor.toggle_select
  end
  cursor.toggle_select
  if selected.empty?
    @mode = :navi
    cursor.toggle_select
  end
end

#selected ⇒ Object 



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# File 'lib/eclair/grid.rb', line 165

def selected
  @selected ||= []
end

#sorted_by ⇒ Object 



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# File 'lib/eclair/grid.rb', line 330

def sorted_by
  SORT_FUNCTIONS.keys[@sort_function_idx]
end

#ssh ⇒ Object 



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# File 'lib/eclair/grid.rb', line 112

def ssh
  targets = selected.select{|i| i.is_a?(Instance) && i.connectable?}
  return if targets.empty?
  close_screen

  cmd = ""
  if targets.count == 1
    target = targets.first
    cmd = target.ssh_cmd
  else
    cmds = []
    session_name = nil
    session_cmd = nil

    targets.each_with_index do |target, i|
      if i==0
        if ENV['TMUX']
          cmds << "tmux new-window -- '#{target.ssh_cmd}'"
        else
          session_name = "eclair#{Time.now.to_i}"
          session_cmd = "-t #{session_name}"
          cmds << "tmux new-session -d -s #{session_name} -- '#{target.ssh_cmd}'"
        end
      else
        cmds << "tmux split-window #{session_cmd} -- '#{target.ssh_cmd}'"
        cmds << "tmux select-layout #{session_cmd} tiled"
      end
    end
    cmds << "tmux set-window-option #{session_cmd} synchronize-panes on" 
    cmds << "tmux attach #{session_cmd}" unless ENV['TMUX']
    cmd = cmds.join(" && ")
  end
  system cmd
  exit
end

#start ⇒ Object 



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# File 'lib/eclair/grid.rb', line 57

def start
  assign
  move_cursor(x: 0, y: 0)
  render_all
end

#start_search ⇒ Object 



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# File 'lib/eclair/grid.rb', line 228

def start_search
  @rollback_cursor = [@x, @y]
  @rollback_mode = @mode
  @search_str = ""
end

#target_col ⇒ Object 



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# File 'lib/eclair/grid.rb', line 160

def target_col
  counts = columns.map(&:count)
  counts.index(counts.min)
end