External Execution Actuator

[vs49688]

Rather simple concept, invoke a program that will start agents.

The program shall have two commands:

Usage:
  ./extlaunch.py launch
  ./extlaunch.py kill <uuid>

• launch takes a JSON dump of the following format from stdin:

{
	"resource_path": "fl012",
	"amqp_uri": "amqp://user:pass@asdfasdfasd",
	"no_verify_peer": true,
	"no_verify_host": true,
	"cert_data": "asdfasd==",
	"amqp_routing_key": "iamthemaster",
	"uuids": [
		"ef449411-1407-4702-ad12-06a639c065fb",
		"a72188ba-24a7-4dd8-95c0-dea896a70141",
		"b725ad16-db6c-4744-995e-b254e4fcfd08"
	],
	"config": {
		"limit": 10,
		"program": "/home/user/Desktop/nimrod-embedded/extlaunch.py"
	}
}

How it invokes the agents, Nimrod doesn't care.
For the case of Embedded Nimrod, it'll generate a script and invoke ssh to another node, bypassing the requirement of needing access to the host's keys.

• kill <uuid> -- Attempt to kill a single agent.

Any nonzero return value is considered a failure.