/*

	*** WORK IN PROGRESS ***

	Zeus mode

	A Zeus instance can load all of the available imperial monitor plugins, but instead of spawning
	vassals it delegates actions to Emperors connected to it.

	The Zeus instance try to distribute vassals evenly between Emperors.

	Emperors register to one (ore more, maybe...) Zeus instance, passing various informations (like the maximum number
	of vassals it can manage)

	to spawn a Zeus:


	# unencrypted mode
	uwsgi --zeus "192.168.173.17:4040 /etc/uwsgi/vassals"
	# crypted mode
	uwsgi --zeus "192.168.173.17:4040,foobar.crt,foobar.key /etc/uwsgi/vassals"
	# crypted + authentication mode
	uwsgi --zeus "192.168.173.17:4040,foobar.crt,foobar.key,clients.pem /etc/uwsgi/vassals"


	to connect an Emperor to Zeus

	# unencrypted mode
	uwsgi --emperor zeus:192.168.173.17:4040
	# crypted mode
	uwsgi --emperor zeus-ssl:192.168.173.17:4040
	# crypted + authentication mode
	uwsgi --emperor zeus-ssl:192.168.173.17:4040,myself.key


	Protocol

	(each message is a basic uwsgi packet: modifier1 pktsize modifier2 payload)
	
	modifier2 identifies the type of the message

	0 -> I_AM_ALIVE {node: 'node001', max_vassals: '100', running_vassals: '17'} [ emperor -> zeus ]

	1 -> NEW_VASSAL {name: 'foobar.ini'} [ zeus -> the choosen emperor ]

	2 -> ACCEPTED_VASSAL {name: 'foobar.ini'} [ emperor -> zeus ]

        3 -> CONFIG_CHUNK {name: 'foobar.ini', body: '[uwsgi].....'} [ zeus -> the choosen emperor ]

	4 -> CONFIG_END {name: 'foobar.ini'} [ zeus -> the choosen emperor ]

	5 -> VASSAL_SPAWNED {name: 'foobar.ini'} [the choosen emperor -> zeus]

	6 -> VASSAL_REJECTED {name: 'foobar.ini'} [the choosen emperor -> zeus]

	7 -> VASSAL_RELOAD {name: 'foobar.ini'} [ zeus -> the choosen emperor ]

	8 -> VASSAL_UPDATE {name: 'foobar.ini'} [ zeus -> the choosen emperor ]

	9 -> VASSAL_DESTROY {name: 'foobar.ini'} [ zeus -> the choosen emperor ]

	10 -> VASSAL_RELOADED {name: 'foobar.ini'} [the choosen emperor -> zeus]

	11 -> VASSAL_DESTROYED {name: 'foobar.ini'} [the choosen emperor -> zeus]

*/