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30990006a9
This reduces chances of errors where consumers of strings mutate inputs and reduces memory usage of the app. Test suite passes now, but there may be some stuff left, so we will run a few sites on a branch prior to merging
45 lines
1.4 KiB
Ruby
45 lines
1.4 KiB
Ruby
# frozen_string_literal: true
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# this is a trivial graceful restart on touch of tmp/restart.
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#
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# It simply drains all the requests (waits up to 4 seconds) and issues a HUP
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# if you need a more sophisticated cycling restart for multiple thins it will need to be written
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#
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# This works fine for Discourse.org cause we host our app accross multiple machines, if you hosting
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# on a single machine you have a trickier problem at hand as you need to cycle the processes in order
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#
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# VIM users rejoice, if you add this to your .vimrc CTRL-a will restart puma:
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# nmap <C-a> <Esc>:!touch tmp/restart<CR><CR>
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Thread.new do
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file = "#{Rails.root}/tmp/restart"
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old_time = File.ctime(file).to_i if File.exists? file
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wait_seconds = 4
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if Rails.env.development? && $PROGRAM_NAME =~ /puma/
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require 'listen'
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time = nil
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begin
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listener = Listen.to("#{Rails.root}/tmp", only: /restart/) do
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time = File.ctime(file).to_i if File.exists? file
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if old_time != time
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Rails.logger.info "attempting to reload #{$$} #{$PROGRAM_NAME} in #{wait_seconds} seconds"
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$shutdown = true
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sleep wait_seconds
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Rails.logger.info "restarting #{$$}"
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Process.kill("USR2", $$)
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end
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end
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listener.start
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sleep
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rescue => e
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puts "Failed to watch for restart, this probably means the old postgres directory is in tmp, remove it #{e}"
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end
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end
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end
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