Class: ScoutApm::Instruments::PercentileSampler

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

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(logger, histograms) ⇒ PercentileSampler

Returns a new instance of PercentileSampler.



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# File 'lib/scout_apm/instruments/percentile_sampler.rb', line 26

def initialize(logger, histograms)
  @logger = logger
  @histograms = histograms
end

Instance Attribute Details

#histograms ⇒ Object (readonly)

A hash of { time => RequestHistograms }



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# File 'lib/scout_apm/instruments/percentile_sampler.rb', line 24

def histograms
  @histograms
end

#logger ⇒ Object (readonly)

Returns the value of attribute logger.



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

def logger
  @logger
end

Instance Method Details

#human_name ⇒ Object 



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# File 'lib/scout_apm/instruments/percentile_sampler.rb', line 31

def human_name
  'Percentiles'
end

#metrics(timestamp, store) ⇒ Object 



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# File 'lib/scout_apm/instruments/percentile_sampler.rb', line 35

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 39

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