Class: AppMap::Algorithm::Stats

Inherits:
StatsStruct show all
Defined in:
lib/appmap/algorithm/stats.rb

Overview

Compute AppMap statistics.

Defined Under Namespace

Classes: Frequency, Result

Instance Attribute Summary

Attributes inherited from StatsStruct

#appmap

Instance Method Summary collapse

Instance Method Details

#perform(limit: nil) ⇒ Object 



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# File 'lib/appmap/algorithm/stats.rb', line 61

def perform(limit: nil)
  events = appmap['events'] || []
  frequency_calc = lambda do |key_func|
    events_by_key = events.inject(Hash.new(0))  do |memo, event|
      key = key_func.call(event)
      memo.tap do
        memo[key] += 1 if key
      end
    end
    events_by_key.map do |key, count|
      Frequency.new(key, count)
    end
  end

  class_name_func = ->(event) { event['defined_class'] }
  full_name_func = lambda do |event|
    call = event['event'] == 'call'
    class_name = event['defined_class']
    static = event['static']
    function_name = event['method_id']
    [ class_name, static ? '.' : '#', function_name ].join if call && class_name && !static.nil? && function_name
  end

  class_frequency = frequency_calc.call(class_name_func)
  method_frequency = frequency_calc.call(full_name_func)

  Result.new(class_frequency, method_frequency)
end