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God.watch do |w|
w.name = "complex"
w.interval = 5.seconds
w.start = File.join(GOD_ROOT, *%w[test configs complex simple_server.rb])
# w.log = File.join(GOD_ROOT, *%w[test configs child_events god.log])
# 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 = 2
c.transition = :start
end
end
# start if process is not running
w.transition(:up, :start) do |on|
on.condition(:process_exits)
end
# restart if process is misbehaving
w.transition(:up, :restart) do |on|
on.condition(:complex) do |cc|
cc.and(:cpu_usage) do |c|
c.above = 0.percent
c.times = 1
end
cc.and(:memory_usage) do |c|
c.above = 0.megabytes
c.times = 3
end
end
end
# lifecycle
w.lifecycle do |on|
on.condition(:flapping) do |c|
c.to_state = [:start, :restart]
c.times = 5
c.within = 20.seconds
c.transition = :unmonitored
c.retry_in = 10.seconds
c.retry_times = 2
c.retry_within = 5.minutes
end
end
end
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