1 files changed, 33 insertions, 0 deletions

diff --git a/Domains/hu.bme.mit.inf.dslreasoner.domains.cps/src/hu/bme/mit/inf/dslreasoner/domains/cps/mdeo/TooLowAverageHddConstraint.xtend b/Domains/hu.bme.mit.inf.dslreasoner.domains.cps/src/hu/bme/mit/inf/dslreasoner/domains/cps/mdeo/TooLowAverageHddConstraint.xtend
new file mode 100644
index 00000000..85cc8115
--- /dev/null
+++ b/Domains/hu.bme.mit.inf.dslreasoner.domains.cps/src/hu/bme/mit/inf/dslreasoner/domains/cps/mdeo/TooLowAverageHddConstraint.xtend
@@ -0,0 +1,33 @@
+package hu.bme.mit.inf.dslreasoner.domains.cps.mdeo
+
+import hu.bme.mit.inf.dslreasoner.domains.cps.CyberPhysicalSystem
+import uk.ac.kcl.inf.mdeoptimiser.libraries.core.optimisation.IGuidanceFunction
+import uk.ac.kcl.inf.mdeoptimiser.libraries.core.optimisation.interpreter.guidance.Solution
+
+class TooLowAverageHddConstraint implements IGuidanceFunction {
+        static val THRESHOLD = 0.25
+        
+        override getName() {
+                "TooLowAverageHdd"
+        }
+
+        override computeFitness(Solution solution) {
+                val cps = solution.model as CyberPhysicalSystem
+                var double sumUtilization
+                var int numHosts
+                for (hostType : cps.hostTypes) {
+                        numHosts += hostType.instances.size
+                        for (host : hostType.instances) {
+                                val utilization = ResourceUtilizationUtil.getHddUtilization(host)
+                                sumUtilization += (utilization as double) / hostType.defaultHdd
+                        }
+                }
+                val averageUtilization = sumUtilization / numHosts
+                val difference = THRESHOLD - averageUtilization
+                if (difference > 0) {
+                        difference
+                } else {
+                        0
+                }
+        }
+}