Class: Rails::Pretty::Logger::RailsLogger::LoggerDevice

Inherits:
LogDevice
  • Object
show all
Includes:
Period
Defined in:
lib/rails/pretty/logger/rails_logger.rb

Constant Summary

Constants included from Period

Period::SiD

Instance Method Summary collapse

Methods included from Period

next_rotate_time, previous_period_end

Constructor Details

#initialize(log = nil, shift_age: nil, shift_size: nil, shift_period_suffix: nil, file_count: nil) ⇒ LoggerDevice

Returns a new instance of LoggerDevice.



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# File 'lib/rails/pretty/logger/rails_logger.rb', line 81

def initialize(log = nil, shift_age: nil, shift_size: nil, shift_period_suffix: nil, file_count: nil)
  @dev = @filename = @shift_age = @shift_size = @shift_period_suffix = @file_count = nil
  mon_initialize
  set_dev(log)
  if @filename
    @shift_age = shift_age || 7
    @shift_size = shift_size || 1048576
    @shift_period_suffix = shift_period_suffix || '%Y%m%d'
    @file_count = file_count || 48
    unless @shift_age.is_a?(Integer)
      base_time = @dev.respond_to?(:stat) ? @dev.stat.mtime : Time.now
      @next_rotate_time = next_rotate_time(base_time, @shift_age)
    end
  end
end

Instance Method Details

#delete_old_file(file_path) ⇒ Object 



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# File 'lib/rails/pretty/logger/rails_logger.rb', line 142

def delete_old_file(file_path)
  day_dir = File.dirname(file_path)
  month_dir = File.expand_path("..",day_dir)
  year_dir = File.expand_path("../..",day_dir)
  File.delete(file_path) if File.exist?(file_path)
  Dir.rmdir(day_dir) if Dir.empty?(day_dir)
  Dir.rmdir(month_dir) if month_dir.empty?
  Dir.rmdir(year_dir) if year_dir.empty?
end

#shift_log_period(period_end) ⇒ Object 



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# File 'lib/rails/pretty/logger/rails_logger.rb', line 97

def shift_log_period(period_end)
  suffix = period_end.strftime(@shift_period_suffix)

  suffix_year = period_end.strftime('%Y')
  suffix_month = period_end.strftime('%m')
  suffix_day = period_end.strftime('%d')

  if @shift_age == 'hourly'
    suffix = period_end.strftime('%Y%m%d_%H%M')
  end

  age_file = "#{@filename}.#{suffix}"

  if FileTest.exist?(age_file)
    # try to avoid filename crash caused by Timestamp change.
    idx = 0
    # .99 can be overridden; avoid too much file search with 'loop do'
    while idx < 100
      idx += 1
      age_file = "#{@filename}.#{suffix}.#{idx}"
      break unless FileTest.exist?(age_file)
    end
  end

  #delete old files
  log_files = Dir[ File.join(Rails.root, 'log', 'hourly') + "/#{suffix_year}/**/*"].reject {|fn| File.directory?(fn) }
  while (log_files.length > @file_count) do
    arr = log_files.reduce([]){|memo, log_file| memo <<  File.ctime(log_file).to_i}
    file_index = arr.index(arr.min)
    file_path = log_files[file_index]
    delete_old_file(file_path)
    log_files = Dir[ File.join(Rails.root, 'log', 'hourly') + "/#{suffix_year}/**/*"].reject {|fn| File.directory?(fn) }
  end

  @dev.close rescue nil

  File.rename("#{@filename}", age_file)
  old_log_path = Rails.root.join(age_file)
  new_path = File.join(Rails.root, 'log', 'hourly', suffix_year, suffix_month, suffix_day)
  FileUtils.mkdir_p new_path
  FileUtils.mv old_log_path, new_path, :force => true
  @dev = create_logfile(@filename)
  return true
end