Class: Top

Inherits:
Object
  • Object
show all
Defined in:
lib/ls4/command/top.rb

Instance Method Summary collapse

Constructor Details

#initialize(cs_addr) ⇒ Top

Returns a new instance of Top.



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# File 'lib/ls4/command/top.rb', line 180

def initialize(cs_addr)
  @cs_addr = cs_addr
  @nodes = {}  # { nid => TargetNode }
  @nodes_sorted = []  # [TargetNode]
  update_nodes
  @simple = false
end

Instance Method Details

#refresh ⇒ Object 



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# File 'lib/ls4/command/top.rb', line 213

def refresh
  Curses.clear
  if @simple
    if Curses.stdscr.maxx >= 82
      format = FORMAT_LARGE_SIMPLE
    else
      format = FORMAT_SMALL_SIMPLE
    end
  else
    if Curses.stdscr.maxx >= 147
      format = FORMAT_LARGE
    else
      format = FORMAT_SMALL
    end
  end

  Curses.setpos(0, 0)
  title_line = format % TITLES
  nlines = title_line.count("\n")+1
  Curses.addstr(title_line)

  @nodes_sorted.each {|node|
    node.refresh_async
  }
  @nodes_sorted.each_with_index {|node, i|
    Curses.setpos((1+i)*nlines, 0)
    params = node.refresh_async_get
    line = format % params
    Curses.addstr(line)
  }

  Curses.refresh
end

#run ⇒ Object 



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# File 'lib/ls4/command/top.rb', line 247

def run
  i = 0
  while true
    before = Time.now

    refresh

    i += 1
    if i > 5
      i = 0
      update_nodes
    end

    elapse = Time.now - before
    if elapse < 0.5
      sleep 0.5 - elapse
    end
  end
rescue
  $stderr.puts $!.inspect
end

#toggle_simple ⇒ Object 



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# File 'lib/ls4/command/top.rb', line 188

def toggle_simple
  if @simple
    @simple = false
  else
    @simple = true
  end
end

#update_nodes ⇒ Object 



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# File 'lib/ls4/command/top.rb', line 196

def update_nodes
  s = $net.get_session(*@cs_addr)
  s.timeout = 20

  fault_nids = s.call(:stat, 'fault')
  s.call(:stat, 'nodes').each {|nid,address,name,rsids,location|
    address = MessagePack::RPC::Address.load(address)
    fault = fault_nids.include?(nid)
    if node = @nodes[nid]
      node.update_info(address, name, rsids, location, fault)
    else
      @nodes[nid] = TargetNode.new(nid, address, name, rsids, location, fault)
    end
  }
  @nodes_sorted = @nodes.values.sort_by {|node| node.nid }
end