Class: Fluent::RandomTagOutput

Inherits:
Output
  • Object
show all
Includes:
HandleTagNameMixin
Defined in:
lib/fluent/plugin/out_randomtag.rb

Instance Method Summary collapse

Instance Method Details

#check_valid_interval(lower, upper) ⇒ Object 



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# File 'lib/fluent/plugin/out_randomtag.rb', line 21

def check_valid_interval(lower, upper)
  if (lower >= upper)
    raise "random_tag: Bad interval for 'integer' (#{lower} >= #{upper})"
  end
end

#configure(conf) ⇒ Object 



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# File 'lib/fluent/plugin/out_randomtag.rb', line 28

def configure(conf)
  super

  if (integer.nil?)
    raise ConfigError, "random_tag: 'integer' is required to be set."
  end

  @integer_interval = parse_integer_field(integer)
  check_valid_interval(@integer_interval[0], @integer_interval[1])
  @random  = Random.new()
end

#emit(tag, es, chain) ⇒ Object 



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# File 'lib/fluent/plugin/out_randomtag.rb', line 40

def emit(tag, es, chain)
  es.each { |time, record|
    t = tag.dup
    r = process()
    #Create new tag with random number prefixed
    nT = "#{r}.#{t}"
    filter_record(nT, time, record)
    Engine.emit(nT, time, record)
  }

  chain.next
end

#parse_integer_field(interval) ⇒ Object 



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# File 'lib/fluent/plugin/out_randomtag.rb', line 13

def parse_integer_field(interval)
  lower_upper = interval.split("..", 2).map{|value| Integer(value) }
  if (lower_upper.length != 2 || !lower_upper[0].is_a?(Integer) || !lower_upper[1].is_a?(Integer))
    raise "random_tag: Bad value for 'integer' (value: '#{interval}')"
  end
  return lower_upper
end