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Contents
# frozen_string_literals: true
module Lumberjack
class Device
# This is a log device that appends entries to a file and rolls the file when it reaches a specified
# size threshold. When a file is rolled, it will have an number extension appended to the file name.
# For example, if the log file is named production.log, the first time it is rolled it will be renamed
# production.log.1, then production.log.2, etc.
class SizeRollingLogFile < RollingLogFile
attr_reader :max_size
# Create an new log device to the specified file. The maximum size of the log file is specified with
# the <tt>:max_size</tt> option. The unit can also be specified: "32K", "100M", "2G" are all valid.
def initialize(path, options = {})
@manual = options[:manual]
@max_size = options[:max_size]
if @max_size.is_a?(String)
if @max_size.match(/^(\d+(\.\d+)?)([KMG])?$/i)
@max_size = $~[1].to_f
units = $~[3].to_s.upcase
case units
when "K"
@max_size *= 1024
when "M"
@max_size *= 1024 ** 2
when "G"
@max_size *= 1024 ** 3
end
@max_size = @max_size.round
else
raise ArgumentError.new("illegal value for :max_size (#{@max_size})")
end
end
super
end
def archive_file_suffix
next_archive_number.to_s
end
def roll_file?
@manual || stream.stat.size > @max_size
rescue SystemCallError
false
end
protected
# Calculate the next archive file name extension.
def next_archive_number # :nodoc:
max = 0
Dir.glob("#{path}.*").each do |filename|
if filename.match(/\.\d+$/)
suffix = filename.split('.').last.to_i
max = suffix if suffix > max
end
end
max + 1
end
end
end
end
Version data entries
4 entries across 4 versions & 3 rubygems