Class: RailsAnalyzer::Summarizer

Inherits:
Base::Summarizer show all
Defined in:
lib/rails_analyzer/summarizer.rb

Overview

Functions to summarize an array of requets. Can calculate request counts, duratations, mean times etc. of all the requests given.

Constant Summary

Constants inherited from Base::Summarizer

Base::Summarizer::DEFAULT_BLOCKER_DURATION

Instance Attribute Summary

Attributes inherited from Base::Summarizer

#actions, #blocker_duration, #errors, #first_request_at, #last_request_at, #methods, #request_count, #request_time_graph

Instance Method Summary collapse

Methods inherited from Base::Summarizer

#duration, #has_timestamps?, #initialize, #request_time_graph?, #sort_actions_by, #sort_blockers_by, #sort_errors_by

Constructor Details

This class inherits a constructor from Base::Summarizer

Instance Method Details

#group(request, &block) ⇒ Object

Parse a request string into a hash containing all keys found in the string. Yields the hash found to the block operator. request The request string to parse. &block Block operator



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# File 'lib/rails_analyzer/summarizer.rb', line 19

def group(request, &block)
  request[:duration] ||= 0
  
  case request[:type]   
    when :started 
      @first_request_at ||= request[:timestamp] # assume time-based order of file
      @last_request_at  = request[:timestamp]   # assume time-based order of file
      @request_time_graph[request[:timestamp][11..12].to_i] +=1
      @methods[request[:method].to_sym] += 1

    when :completed
      @request_count += 1 
      hash = block_given? ? yield(request) : request.hash

      @actions[hash] ||= {:count => 0, :total_time => 0.0, :total_db_time => 0.0, :total_rendering_time => 0.0, 
                            :min_time => request[:duration], :max_time => request[:duration] }
                        
      @actions[hash][:count] += 1
      @actions[hash][:total_time] += request[:duration]
      @actions[hash][:total_db_time] += request[:db] if request[:db]
      @actions[hash][:total_db_time] += request[:duration] - request[:rendering] if @calculate_database

      @actions[hash][:total_rendering_time] += request[:rendering] if request[:rendering]
  
      @actions[hash][:min_time] = [@actions[hash][:min_time], request[:duration]].min
      @actions[hash][:max_time] = [@actions[hash][:min_time], request[:duration]].max
      @actions[hash][:mean_time] = @actions[hash][:total_time] / @actions[hash][:count].to_f
  
      @actions[hash][:mean_db_time] = @actions[hash][:total_db_time] / @actions[hash][:count].to_f      
      @actions[hash][:mean_rendering_time] = @actions[hash][:total_rendering_time] / @actions[hash][:count].to_f            
  
      if request[:duration] > @blocker_duration
        @blockers[hash] ||= { :count => 0, :total_time => 0.0 }
        @blockers[hash][:count]      += 1
        @blockers[hash][:total_time] += request[:duration]
      end

    when :failed
      hash = request[:error]
      @errors[hash] ||= {:count => 0, :exception_strings => {}}
      @errors[hash][:count] +=1
      
      @errors[hash][:exception_strings][request[:exception_string]] ||= 0
      @errors[hash][:exception_strings][request[:exception_string]] += 1
  end
end

#initialize_hook(options = {}) ⇒ Object

Initializer. Sets global variables Options

  • :calculate_database Calculate the database times if they are not explicitly logged.



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# File 'lib/rails_analyzer/summarizer.rb', line 11

def initialize_hook(options = {})
  @calculate_database = options[:calculate_database]
end