StaLangExample.stalang

// this is a comment

// place imports here, e.g.
// import uri 

// Summary of operators
// '=' is an assignment
// ':' starts a list (e.g.: elementA, elementB, elementC)

AdaptationProcess ExampleProcessName {

	goal
		// '=' is an assignment, i.e., a text is assigned to myDescription
		Description myDescription = "A verbose description of the goal of the adaptation process so that 
			anyone can understand the purpose of the modeled adaptation process"
		objectives: // ':' starts a list
			Objective Objective1Name = "A string specifying the objective 1",
			Objective Objective2Name = "A string specifying the objective 2"
	
	actions:
		Action Action1Name operationType SCALE_OUT {
			// optional input output parameters
			input: param1Name, param2Name
			output: param3Name
			referredAdaptationPoint ref:xyz1 THIS INCREASE // I have no clue so far how to refer to external model instances
			// THIS and INCREASE are values for AdaptationScope and AdaptationDirection
		}
		// Alternative notation for an Action (possible in Xtext?):
		// param3Name Action1Name(param1Name, param2Name) {referredAdaptationPoint ref:xyz1, THIS, SCALE_UP}
				
		Action Action2Name operationType SCALE_IN {
			// optional parameters
			referredAdaptationPoint ref:xyz2 RANDOM MIGRATE// I have no clue so far how to refer to external model instances
		}
	
	tactics:
		Tactic Tactic1Name {
			// optional input output parameters
			input: param1Name, param2Name
			output: param3Name
			implementedPlan: StartAction, Action1Name, ... Action2Name, StopAction
		}
		// Alternative notation for a Tactic:
		// param3Name Tactic1Name(param1Name, param2Name) {StartAction, Action1Name, ... Action2Name, StopAction}
		
		Tactic Tactic2Name {
			// optional input output parameters
			implementedPlan:
				StartAction,
				// Some other actions
				StopAction
		}
	
	strategies:
		Strategy Strategy1Name {
			objective=Objective1Name
			triggeringEvents=EventXYName
			tactics:
				WeightedTactic1Name=Tactic1Name 1.3 1.0 ref:LastImpactXY1, 
				WeightedTactic2Name=Tactic2Name 2.1 2.0 ref:LastImpactXY2
				
			weightingFunction WeightingFunction1Name {
				WeightedMetric1Name = 1.9 ref:ResponseTimeMetric1
				WeightedMetric2Name = 2.3 ref:UtilizationMetric1
			}
		}

	// definition of parameters should be optional
	parameters:
		ParamTypeA param1Name,
		ParamTypeB param2Name,
		ParamTypeC param3Name
}