Class: Bstick::Server

Inherits:
Object
  • Object
show all
Defined in:
lib/bstick.rb

Instance Method Summary collapse

Constructor Details

#initialize ⇒ Server

Returns a new instance of Server.



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# File 'lib/bstick.rb', line 8

def initialize
  init
end

Instance Method Details

#alarm_state ⇒ Object 



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# File 'lib/bstick.rb', line 107

def alarm_state
  time = Time.parse(@state.split(' ')[1])
  if Time.now < time
    on_state
  else
    random_state
  end
end

#black ⇒ Object 



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# File 'lib/bstick.rb', line 27

def black
  @black ||= Color::RGB.from_html("#000000")
end

#blink_state ⇒ Object 



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# File 'lib/bstick.rb', line 73

def blink_state
  @values = { green: 0, direction: 20 } if !@values
  color_1 = Color::RGB.new(0xFF - @values[:green], @values[:green], 0x00)
  color_2 = Color::RGB.new(@values[:green], 0xFF - @values[:green], 0x00)
  @values[:green] += @values[:direction]
  if(@values[:green] < 0 || @values[:green] > 0xFF)
    @values[:direction] *= -1
  end
  set_colors(color_1, color_2)
end

#green ⇒ Object 



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# File 'lib/bstick.rb', line 31

def green
  @green = Color::RGB.new(0x00, 0xFF, 0x00)
end

#handle_state ⇒ Object 



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# File 'lib/bstick.rb', line 116

def handle_state
  if @old_state != @state
    @values = nil
    @wait = 100000000000000
  end
  case @state.split(' ').first
  when 'off'   then off_state
  when 'random'then random_state
  when 'on'    then on_state
  when 'blink' then blink_state
  when 'ping'  then ping_state
  when 'alarm' then alarm_state
  end
end

#init ⇒ Object 



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# File 'lib/bstick.rb', line 12

def init
  system 'sudo mkdir -p /var/bstick'
  system 'sudo chmod 777 /var/bstick'
  system 'sudo touch /var/bstick/led.state'
  system 'sudo chmod 777 /var/bstick/led.state'
  @logger = ::Logger.new('/var/bstick/bstick.log', 1, 1024000)
  @state  = ''
  @values = nil
  @b      = nil
end

#off_state ⇒ Object 



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# File 'lib/bstick.rb', line 65

def off_state
  set_colors(black, black)
end

#on_state ⇒ Object 



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# File 'lib/bstick.rb', line 69

def on_state
  set_colors(green, green)
end

#ping_state ⇒ Object 



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# File 'lib/bstick.rb', line 84

def ping_state
  @wait += 1
  return if @wait < 15 * 33
  @wait = 0
  url = @state.split(' ')[1] || "http://www.undefine.io"
  ping = Net::Ping::HTTP.new(url)
  @logger.info "ping #{url} #{ping.ping?}"
  if result = ping.ping?
    set_colors(green, green)
  else
    set_colors(red, red)
  end
end

#random_state ⇒ Object 



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# File 'lib/bstick.rb', line 98

def random_state
  @wait += 1
  return if @wait < 0.5 * 33
  @wait = 0
  color_1 = Color::RGB.new(rand(0..0xFF), rand(0..0xFF), rand(0..0xFF))
  color_2 = Color::RGB.new(rand(0..0xFF), rand(0..0xFF), rand(0..0xFF))
  set_colors(color_1, color_2)
end

#read_state ⇒ Object 



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# File 'lib/bstick.rb', line 39

def read_state
  @old_state = @state
  file    = File.expand_path("/var/bstick/led.state", __FILE__)
  @file   = File.open(file, "a+")
  File.chmod(0777, file)
  @file.seek(0)
  @state = @file.readline.strip rescue 'off'
  @file.close
end

#red ⇒ Object 



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# File 'lib/bstick.rb', line 35

def red
  @red = Color::RGB.new(0xFF, 0x00, 0x00)
end

#run ⇒ Object 



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# File 'lib/bstick.rb', line 131

def run
  @logger.info 'started'
  loop do
    begin
      read_state
      handle_state
      sleep 1/33.0
    rescue => e
      @logger.error e.message
      sleep 10
      init
    end
  end
end

#set_colors(color_1, color_2) ⇒ Object 



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# File 'lib/bstick.rb', line 49

def set_colors(color_1, color_2)
  if stick
    if (color_1 != @color_1 || color_2 != @color_2)
      @logger.info @state
      stick.set_color(0, 0, color_1)
      stick.set_color(0, 1, color_2)
      @color_1 = color_1
      @color_2 = color_2
    end
  else
    @logger.error 'no stick found'
    sleep 10
    init
  end
end

#stick ⇒ Object 



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# File 'lib/bstick.rb', line 23

def stick
  @b ||= BlinkStick.find_all.first
end