Module: Croque::Aggregator

Defined in:
lib/croque/aggregator.rb

Class Method Summary collapse

Class Method Details

.aggregate(date) ⇒ Object 



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# File 'lib/croque/aggregator.rb', line 4

def aggregate(date)
  # remove files
  remove_files(date)
  # aggregate per hour
  aggregate_per_hour(date)
  # generate_ranking
  generate_ranking(date)
end

.aggregate_per_hour(date) ⇒ Object 



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# File 'lib/croque/aggregator.rb', line 13

def aggregate_per_hour(date)
  # scan each file
  log("aggregate logs per hour on #{date} start")
  log_files.each do |file|
    log("check skippable of #{file}")
    # check skippable
    next if skippable?(date, file)
    log("aggregate logs of #{file}")
    # all lines
    linage = 1000
    wc_result = `wc -l #{file}`
    line_count = wc_result.match(/\d+/)[0].to_i
    k = 1
    lines = []
    while (k-1)*linage < line_count
      log("aggregate logs for #{(k-1)*linage}-#{k*linage} in #{line_count} on #{date}")
      fragment = `head -n #{k*1000} #{file} | tail -n #{linage}`
      fragment_lines = fragment.lines
      lines += fragment_lines.select do |line|
        line.match(date_matcher(date))
      end
      k += 1
    end
    # extract the matched line (Date)
    lines = lines
    hours.each do |hour|
      # craete csv file
      log("create csv for #{date} #{hour} hour")
      create_csv(date, hour, lines)
    end
  end
  log("aggregate logs per hour on #{date} end")
end

.all ⇒ Object 



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# File 'lib/croque/aggregator.rb', line 77

def all
  paths = Dir.glob(store_path + '*')
  paths = paths.select do |path|
    path.match(/\d{4}\-\d{2}\-\d{2}/)
  end
  paths.map do |path|
    Date.parse(File.basename(path))
  end
end

.generate_ranking(date) ⇒ Object 



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# File 'lib/croque/aggregator.rb', line 47

def generate_ranking(date)
  log("generate ranking on #{date} start")
  array = []
  hours.each do |hour|
    log("generate array for ranking in #{date} #{hour} hour")
    # csv data
    path = csv_path(date, hour)
    # next if no file
    next unless File.exist?(path)
    csv_data = File.open(path, "r").read.gsub(/\r/, "")
    csv = CSV.new(csv_data)
    csv.to_a.each do |line|
      uuid = line[0]
      processing_time = line[1].to_f
      next if low?(processing_time)
      array << [date, hour, uuid, processing_time]
    end
  end
  log("sort array for ranking on #{date}")
  # Processing Time Desc
  array = array.sort{ |a, b| b[3] <=> a[3] }
  log("generate ranking csv on #{date}")
  # Generate CSV
  data = CSV.generate("", csv_option) do |csv|
    array.each{ |line| csv << line }
  end
  store_csv(ranking_path(date), data)
  log("generate ranking on #{date} end")
end