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puma--puma/lib/puma/plugin/tmp_restart.rb
Vladimir Dementyev 2cb2357d39 Let's use Rubocop! (#1325)
* Add limited rubocop config and TODO config

* Remove trailing whitespaces and blanklines

* Add rubocop rake task; upd travis.yml
2017-06-04 13:21:05 -07:00

34 lines
704 B
Ruby

require 'puma/plugin'
Puma::Plugin.create do
def start(launcher)
path = File.join("tmp", "restart.txt")
orig = nil
# If we can't write to the path, then just don't bother with this plugin
begin
File.write(path, "") unless File.exist?(path)
orig = File.stat(path).mtime
rescue SystemCallError
return
end
in_background do
while true
sleep 2
begin
mtime = File.stat(path).mtime
rescue SystemCallError
# If the file has disappeared, assume that means don't restart
else
if mtime > orig
launcher.restart
break
end
end
end
end
end
end