Class: ScoutApm::Instruments::PercentileSampler

Inherits:
Object
  • Object
show all
Defined in:
lib/scout_apm/instruments/percentile_sampler.rb

Instance Method Summary collapse

Constructor Details

#initialize(context) ⇒ PercentileSampler

Returns a new instance of PercentileSampler.



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# File 'lib/scout_apm/instruments/percentile_sampler.rb', line 21

def initialize(context)
  @context = context
end

Instance Method Details

#histograms ⇒ Object 



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# File 'lib/scout_apm/instruments/percentile_sampler.rb', line 25

def histograms
  @context.request_histograms_by_time
end

#human_name ⇒ Object 



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# File 'lib/scout_apm/instruments/percentile_sampler.rb', line 33

def human_name
  'Percentiles'
end

#logger ⇒ Object 



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# File 'lib/scout_apm/instruments/percentile_sampler.rb', line 29

def logger
  @context.logger
end

#metrics(timestamp, store) ⇒ Object 



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# File 'lib/scout_apm/instruments/percentile_sampler.rb', line 37

def metrics(timestamp, store)
  store.track_histograms!(percentiles(timestamp), :timestamp => timestamp)
end

#percentiles(time) ⇒ Object 



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# File 'lib/scout_apm/instruments/percentile_sampler.rb', line 41

def percentiles(time)
  result = []

  histogram = histograms.delete(time)

  return result unless histogram

  histogram.each_name do |name|
    result << HistogramReport.new(name, histogram.raw(name))
  end

  result
end