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62 lines
1.6 KiB
Ruby
62 lines
1.6 KiB
Ruby
Thread.new do
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file = "#{Rails.root}/tmp/restart"
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did_exist = nil
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old_time = nil
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return if $PROGRAM_NAME !~ /thin/
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processes = {}
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got_new = false
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MessageBus.subscribe "/processes" do |msg|
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filetime = msg.data["filetime"]
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pid = msg.data["pid"]
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got_new = processes[pid].nil? || (processes[pid][:filetime] != filetime)
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# puts "#{got_new} #{pid}"
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processes[pid] = {time: Time.now.to_i, filetime: filetime}
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end
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while true
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exists = File.exists? file
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time = File.ctime(file).to_i if exists
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if (did_exist != nil && did_exist != exists) ||
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(old_time != nil && time != nil && old_time != time)
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got_new = false
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probably_restarted = []
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give_up_time = Time.now.to_i + 60
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while Time.now.to_i < give_up_time
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candidates = []
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processes.each do |pid,data|
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if data[:filetime] == old_time && data[:time] > Time.now.to_i - 40
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candidates << pid
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end
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end
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candidates = candidates - probably_restarted
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break if (candidates.min || $$) >= $$
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sleep 1
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probably_restarted << candidates.min if got_new
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got_new = false
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end
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Rails.logger.info "attempting to reload #{$$} #{$PROGRAM_NAME} in 3 seconds restarted #{probably_restarted.inspect}"
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$shutdown = true
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sleep 4
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Rails.logger.info "restarting #{$$}"
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Process.kill("HUP", $$)
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break
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end
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MessageBus.publish "/processes", {pid: $$, filetime: time}
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did_exist = exists
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old_time = time
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sleep 1
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end
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end
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