cs462-lab4-temperature_store.krl

ruleset temperature_store {
	meta {
		name "Temperature Store"
		author "Daniel Randall"

		provides temperatures, threshold_violations, inrange_temperatures
		shares temperatures, threshold_violations, inrange_temperatures
	}

	global {
		temperatures = function() {
			ent:temperatures
		}

		threshold_violations = function() {
			ent:threshold_violations
		}

		inrange_temperatures = function() {
			ent:temperatures.difference(ent:threshold_violations)
		}
	}

	rule collect_temperatures {
		select when wovyn new_temperature_reading

		always {
			ent:temperatures := ent:temperatures.defaultsTo([]).append(event:attrs)
		}
	}

	rule collect_threshold_violations {
		select when wovyn threshold_violation

		always {
			ent:threshold_violations := ent:threshold_violations.defaultsTo([]).append(event:attrs)
		}
	}

	rule clear_temperatures {
		select when sensor reading_reset

		always {
			clear ent:temperatures
			clear ent:threshold_violations
		}
	}
}