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RAILS_ROOT = "/Users/tom/dev/gravatar2"
God.watch do |w|
w.name = "local-3000"
w.interval = 5.seconds # default
w.start = "mongrel_rails start -c #{RAILS_ROOT} -P #{RAILS_ROOT}/log/mongrel.pid -p 3000 -d"
w.stop = "mongrel_rails stop -P #{RAILS_ROOT}/log/mongrel.pid"
w.restart = "mongrel_rails restart -P #{RAILS_ROOT}/log/mongrel.pid"
w.pid_file = File.join(RAILS_ROOT, "log/mongrel.pid")
# clean pid files before start if necessary
w.behavior(:clean_pid_file)
# 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
end
# failsafe
on.condition(:tries) do |c|
c.times = 5
c.transition = :start
end
end
# start if process is not running
w.transition(:up, :start) do |on|
on.condition(:process_exits)
end
# restart if memory or cpu is too high
w.transition(:up, :restart) do |on|
on.condition(:memory_usage) do |c|
c.interval = 20
c.above = 50.megabytes
c.times = [3, 5]
end
on.condition(:cpu_usage) do |c|
c.interval = 10
c.above = 10.percent
c.times = [3, 5]
end
end
# lifecycle
w.lifecycle do |on|
on.condition(:flapping) do |c|
c.to_state = [:start, :restart]
c.times = 5
c.within = 5.minute
c.transition = :unmonitored
c.retry_in = 10.minutes
c.retry_times = 5
c.retry_within = 2.hours
end
end
end
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