WIP: Optaplanner.

1 files changed, 45 insertions, 0 deletions

diff --git a/module/acme/src/main/java/io/trygvis/acme/planning/machine/CloudBalancingEasyScoreCalculator.java b/module/acme/src/main/java/io/trygvis/acme/planning/machine/CloudBalancingEasyScoreCalculator.java
new file mode 100644
index 0000000..6a14372
--- /dev/null
+++ b/module/acme/src/main/java/io/trygvis/acme/planning/machine/CloudBalancingEasyScoreCalculator.java
@@ -0,0 +1,45 @@
+package io.trygvis.acme.planning.machine;
+
+import org.optaplanner.core.api.score.buildin.hardsoft.HardSoftScore;
+import org.optaplanner.core.api.score.calculator.EasyScoreCalculator;
+
+public class CloudBalancingEasyScoreCalculator implements EasyScoreCalculator<CloudBalance, HardSoftScore> {
+
+    @Override
+    public HardSoftScore calculateScore(CloudBalance cloudBalance) {
+        int hardScore = 0;
+        int softScore = 0;
+        for (CloudComputer computer : cloudBalance.getComputerList()) {
+            int cpu = 0;
+            int memory = 0;
+            boolean used = false;
+
+            // Calculate usage
+            for (CloudProcess process : cloudBalance.getProcessList()) {
+                if (computer.equals(process.computer)) {
+                    cpu += process.requiredCpu;
+                    memory += process.requiredMemory;
+                    used = true;
+                }
+            }
+
+            var instance = computer.instance;
+
+            // Hard constraints
+            int cpuPowerAvailable = instance.cpu - cpu;
+            if (cpuPowerAvailable < 0) {
+                hardScore += cpuPowerAvailable;
+            }
+            int memoryAvailable = instance.memory - memory;
+            if (memoryAvailable < 0) {
+                hardScore += memoryAvailable;
+            }
+
+            // Soft constraints
+            if (used) {
+                softScore -= instance.cost;
+            }
+        }
+        return HardSoftScore.of(hardScore, softScore);
+    }
+}