Created
November 4, 2011 21:13
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God configuration for Resque extra workers
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rails_env = ENV['RAILS_ENV'] || "production" | |
rails_root = ENV['RAILS_ROOT'] || "/mnt/data-store/html/gogobot/current" | |
WORKER_TIMEOUT = 60 * 10 # 10 minutes | |
# Stale workers | |
Thread.new do | |
loop do | |
begin | |
`ps -e -o pid,command | grep [r]esque`.split("\n").each do |line| | |
parts = line.split(' ') | |
next if parts[-2] != "at" | |
started = parts[-1].to_i | |
elapsed = Time.now - Time.at(started) | |
if elapsed >= WORKER_TIMEOUT | |
::Process.kill('USR1', parts[0].to_i) | |
end | |
end | |
rescue | |
# don't die because of stupid exceptions | |
nil | |
end | |
sleep 30 | |
end | |
end | |
queue_name = "realtime" | |
num_workers = 10 | |
# FB wall posts | |
num_workers.times do |num| | |
God.watch do |w| | |
w.dir = "#{rails_root}" | |
w.name = "resque-#{num}-#{queue_name}" | |
w.group = "resque" | |
w.interval = 2.minutes | |
w.env = {"QUEUE"=>"#{queue_name}", "RAILS_ENV"=>rails_env, "PIDFILE" => "#{rails_root}/tmp/resque_#{queue_name}_#{w}.pid"} | |
w.pid_file = "#{rails_root}/tmp/resque_#{queue_name}_#{w}.pid" | |
w.start = "cd #{rails_root}/ && bundle exec rake environment resque:work QUEUE=#{queue_name} RAILS_ENV=#{rails_env}" | |
w.log = "#{rails_root}/log/resque_god.log" | |
w.uid = 'root' | |
w.gid = 'root' | |
# restart if memory gets too high | |
w.transition(:up, :restart) do |on| | |
on.condition(:memory_usage) do |c| | |
c.above = 350.megabytes | |
c.times = 2 | |
end | |
end | |
# determine the state on startup | |
w.transition(:init, { true => :up, false => :start }) do |on| | |
on.condition(:process_running) do |c| | |
c.running = true | |
end | |
end | |
# determine when process has finished starting | |
w.transition([:start, :restart], :up) do |on| | |
on.condition(:process_running) do |c| | |
c.running = true | |
c.interval = 5.seconds | |
end | |
# failsafe | |
on.condition(:tries) do |c| | |
c.times = 5 | |
c.transition = :start | |
c.interval = 5.seconds | |
end | |
end | |
# start if process is not running | |
w.transition(:up, :start) do |on| | |
on.condition(:process_running) do |c| | |
c.running = false | |
end | |
end | |
end | |
end |
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