Class: LogStash::Instrument::MetricType::Mean

Inherits:
Base
  • Object
show all
Defined in:
lib/logstash/instrument/metric_type/mean.rb

Instance Attribute Summary

Attributes inherited from Base

#key, #namespaces

Instance Method Summary collapse

Methods inherited from Base

#inspect, #to_hash, #to_json_data, #type

Constructor Details

#initialize(namespaces, key) ⇒ Mean

Returns a new instance of Mean.



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# File 'lib/logstash/instrument/metric_type/mean.rb', line 7

def initialize(namespaces, key)
  super(namespaces, key)

  @counter = Concurrent::AtomicFixnum.new
  @sum = Concurrent::AtomicFixnum.new
end

Instance Method Details

#decrement(value = 1) ⇒ Object 



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# File 'lib/logstash/instrument/metric_type/mean.rb', line 19

def decrement(value = 1)
  @counter.decrement
  @sum.decrement(value)
end

#increment(value = 1) ⇒ Object 



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# File 'lib/logstash/instrument/metric_type/mean.rb', line 14

def increment(value = 1)
  @counter.increment
  @sum.increment(value)
end

#mean ⇒ Object Also known as: value 



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# File 'lib/logstash/instrument/metric_type/mean.rb', line 24

def mean
  if @counter > 0
    @sum.value / @counter.value
  else
    0
  end
end