Class: Oink::MemoryUsageReporter

Inherits:
Base
  • Object
show all
Defined in:
lib/oink/memory_usage_reporter.rb

Constant Summary

Constants inherited from Base

Base::FORMATS, Base::FORMAT_ALIASES, Base::HODEL_LOG_FORMAT_REGEX, Base::VERSION

Instance Method Summary collapse

Methods inherited from Base

#initialize

Constructor Details

This class inherits a constructor from Oink::Base

Instance Method Details



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# File 'lib/oink/memory_usage_reporter.rb', line 10

def print(output)
  output.puts "---- MEMORY THRESHOLD ----"
  output.puts "THRESHOLD: #{@threshold/1024} MB\n"

  output.puts "\n-- REQUESTS --\n" if @format == :verbose

  ic = Iconv.new('UTF-8//IGNORE', 'UTF-8')
  @inputs.each do |input|
    input.each_line do |line|
      line = ic.iconv(line.strip + ' ')[0..-2]
      
       # Skip this line since we're only interested in the Hodel 3000 compliant lines
      next unless line =~ HODEL_LOG_FORMAT_REGEX

      if line =~ /rails\[(\d+)\]/
        pid = $1
        @pids[pid] ||= { :buffer => [], :last_memory_reading => -1, :current_memory_reading => -1, :action => "", :request_finished => true }
        @pids[pid][:buffer] << line
      end

      if line =~ /Processing ((\w+)#(\w+)) /
  
        unless @pids[pid][:request_finished]
          @pids[pid][:last_memory_reading] = -1
        end
        @pids[pid][:action] = $1
        @pids[pid][:request_finished] = false
  
      elsif line =~ /Memory usage: (\d+) /
  
        memory_reading = $1.to_i
        @pids[pid][:current_memory_reading] = memory_reading
  
      elsif line =~ /Completed in/
    
        @pids[pid][:request_finished] = true
        unless @pids[pid][:current_memory_reading] == -1 || @pids[pid][:last_memory_reading] == -1
          memory_diff = @pids[pid][:current_memory_reading] - @pids[pid][:last_memory_reading]
          if memory_diff > @threshold
            @bad_actions[@pids[pid][:action]] ||= 0
            @bad_actions[@pids[pid][:action]] = @bad_actions[@pids[pid][:action]] + 1
            date = HODEL_LOG_FORMAT_REGEX.match(line).captures[0]
            @bad_requests.push(OinkedMemoryRequest.new(@pids[pid][:action], date, @pids[pid][:buffer], memory_diff))
            if @format == :verbose
              @pids[pid][:buffer].each { |b| output.puts b } 
              output.puts "---------------------------------------------------------------------"
            end
          end
        end
      
        @pids[pid][:buffer] = []
        @pids[pid][:last_memory_reading] = @pids[pid][:current_memory_reading]
        @pids[pid][:current_memory_reading] = -1
    
      end # end elsif
    end # end each_line
  end # end each input

  print_summary(output)

end