Class: Logging::Appenders::RollingFile

Inherits:
IO
  • Object
show all
Defined in:
lib/ubsafe/extensions/ubsafe_logging_extensions.rb

Instance Method Summary collapse

Constructor Details

#initialize(name, opts = {}) ⇒ RollingFile

Returns a new instance of RollingFile.

Raises:

  • (ArgumentError) 


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# File 'lib/ubsafe/extensions/ubsafe_logging_extensions.rb', line 49

def initialize( name, opts = {} )
  # raise an error if a filename was not given
  @fn = opts.getopt(:filename, name)
  raise ArgumentError, 'no filename was given' if @fn.nil?
  ::Logging::Appenders::File.assert_valid_logfile(@fn)

  # grab the information we need to properly roll files
  ext = ::File.extname(@fn)
  bn = ::File.join(::File.dirname(@fn), ::File.basename(@fn, ext))
  @rgxp = %r/\.(\d+)#{Regexp.escape(ext)}\z/
  @glob = "#{bn}.*#{ext}"
  @logname_fmt = "#{bn}.%d#{ext}"

  # grab our options
  @keep = opts.getopt(:keep, :as => Integer)
  @size = opts.getopt(:size, :as => Integer)

  @lockfile = if opts.getopt(:safe, false) and !::Logging::WIN32
    ::Lockfile.new(
        @fn + '.lck',
        :retries => 1,
        :timeout => 2
    )
  end

  code = 'def sufficiently_aged?() false end'
  @age_fn = @fn + '.age'

  case @age = opts.getopt(:age)
  when 'daily'
    FileUtils.touch(@age_fn) unless test(?f, @age_fn)
    code = <<-CODE
    def sufficiently_aged?
      now = Time.now.utc
      start = ::File.mtime(@age_fn).utc
      if (now.day != start.day) or (now - start) > 86400
        return true
      end
      false
    end
    CODE
  when 'weekly'
    FileUtils.touch(@age_fn) unless test(?f, @age_fn)
    code = <<-CODE
    def sufficiently_aged?
      if (Time.now.utc - ::File.mtime(@age_fn).utc) > 604800
        return true
      end
      false
    end
    CODE
  when 'monthly'
    FileUtils.touch(@age_fn) unless test(?f, @age_fn)
    code = <<-CODE
    def sufficiently_aged?
      now = Time.now.utc
      start = ::File.mtime(@age_fn).utc
      if (now.month != start.month) or (now - start) > 2678400
        return true
      end
      false
    end
    CODE
  when Integer, String
    @age = Integer(@age)
    FileUtils.touch(@age_fn) unless test(?f, @age_fn)
    code = <<-CODE
    def sufficiently_aged?
      if (Time.now.utc - ::File.mtime(@age_fn).utc) > @age
        return true
      end
      false
    end
    CODE
  end
  meta = class << self; self end
  meta.class_eval code, __FILE__, __LINE__

  # if the truncate flag was set to true, then roll 
  roll_now = opts.getopt(:truncate, false)
  roll_files if roll_now

  super(name, open_logfile, opts)
end