Class: LS4::FileRelayTimeStampService::Stamp

Inherits:
Object
  • Object
show all
Includes:
RelayTimeStamp
Defined in:
lib/ls4/service/rts_file.rb

Instance Method Summary collapse

Constructor Details

#initialize(path) ⇒ Stamp

Returns a new instance of Stamp.



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# File 'lib/ls4/service/rts_file.rb', line 31

def initialize(path)
  @path = path
  @tmp_path = "#{@path}.tmp"
  @file = nil
end

Instance Method Details

#close ⇒ Object 



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# File 'lib/ls4/service/rts_file.rb', line 37

def close
  if @file
    @file.close
    @file = nil
  end
  nil
end

#get ⇒ Object 



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# File 'lib/ls4/service/rts_file.rb', line 45

def get
  unless @file
    @file = File.open(@path)
  end
  @file.pos = 0
  @file.read.to_i
rescue
  0
end

#set(pos, &block) ⇒ Object 



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# File 'lib/ls4/service/rts_file.rb', line 55

def set(pos, &block)
  close

  File.open(@tmp_path, "w") {|f|
    f.write(pos.to_s)
  }

  block.call if block

  File.rename(@tmp_path, @path)

  nil
end