Created
April 7, 2022 18:10
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signal をつけて reopen するlogger logrotate ローテーション
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require 'pry-byebug' | |
require 'logger' | |
pid_file = '/home/pocari/tmp/logrotate/sample_daemon.pid' | |
File.open(pid_file, "w") { |f| f.write "#{Process.pid}" } | |
at_exit do | |
if File.exists?(pid_file) | |
File.delete(pid_file) | |
end | |
end | |
class MyLogger < Logger | |
attr_reader :logdev | |
def initialize(*args, **kwargs) | |
super | |
end | |
end | |
logger = MyLogger.new('/home/pocari/tmp/logrotate/output.log') | |
trap("USR1") do | |
p [:trapped, :USR1] | |
# signalハンドラの制限でreopenできないため、フラグだけ立てる | |
$reopen_flag = true | |
end | |
500.times do |i| | |
if $reopen_flag | |
# これが立っていたらログローテートされているので、新しいファイルをreopenする | |
logger.reopen | |
$reopen_flag = false | |
end | |
logger.info("i ... #{i}") | |
sleep 0.1 | |
end |
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