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Contrlua

Distributed application framework written in Lua

Example usage:

#Scenario 1 It shows simple app discovery thorough the network and IPC

Node 1:
	TTY 1.1:
		lua controller.lua -s --name="Node_1"

	TTY 1.2: - we are using this tty to issue commands
		lua -i app_test.lua

Node 2:
	TTY 2.1:
		lua controler.lua [-s] --name="Node_2"

	TTY 2.2:
		lua -i app_test.lua
		> A:Ct([[ Operations.ConnectToOtherNode("Node_1_ip") ]])
		> S = A:createSocket("Node_1_1")
		> S:send("test data")

To look at results type in TTY 1.2

	> A:getData()

If you can't or are not willing to open two TTYs at remote node, you can use backdoored initialize:

TTY 2.3 (instead of 1.2)
	lua -i app.lua
	> A = App:new()
	> A:initialize("Node_1_ip")
	> A:getData()

This will cause App A_1 to run on Node 2 physically, but on Node 1 in terms of Contrlua cloud.

#Scenario 2 It shows "hot" application movement thorough the grid. With some modifications, it's also possible to achieve "snapshots" functionality.

Node 1:
	TTY 1.1:
		lua controller.lua -s --name="Node_1"

	TTY 1.2:
		lua -i app_test.lua
		> A:Ct[[ Operations.RunApp("snake", "SNAKE_APP_ID") ]]

Node 2:
	TTY 2.1
		lua controller.lua [-s] --name="Node_2" --connect="node_1_ip"

	TTY 2.2
		lua snake/snake-client.lua

After a while, a window with running snake should appear To move app, type (or even better, copy):

	TTY 1.2:
		> A:Ct[[ Operations.MoveApp("SNAKE_APP_ID", "Node_2") ]]

If everything works as planned, you shouldn't be able to see any erratic snake behavior; in fact, it will keep running, confirming the app movement is pretty much in real-time.

If you aren't convinced, feel free to kill all of the processes on node 1.