lib/god/conditions/process_exits.rb

   1 module God
   2   module Conditions
   3
   4     class ProcessExits < EventCondition
   5       def valid?
   6         valid = true
   7         valid &= complain("Attribute 'pid_file' must be specified", self) if self.watch.pid_file.nil?
   8         valid
   9       end
  10
  11       def register
  12         pid = File.read(self.watch.pid_file).strip.to_i
  13
  14         begin
  15           EventHandler.register(pid, :proc_exit) do
  16             Hub.trigger(self)
  17           end
  18         rescue StandardError
  19           raise EventRegistrationFailedError.new
  20         end
  21       end
  22
  23       def deregister
  24         pid = File.read(self.watch.pid_file).strip.to_i
  25         EventHandler.deregister(pid, :proc_exit)
  26       end
  27     end
  28
  29   end
  30 end