work

src/Policy/StellaOps.Policy.Engine/Services/PolicyEvaluationService.cs

@@ -1,17 +1,27 @@
-using System.Collections.Immutable;
-using StellaOps.Policy.Engine.Compilation;
-using StellaOps.Policy.Engine.Evaluation;
-
-namespace StellaOps.Policy.Engine.Services;
-
-internal sealed class PolicyEvaluationService
-{
-    private readonly PolicyEvaluator evaluator = new();
-
-    public PolicyEvaluationResult Evaluate(PolicyIrDocument document, PolicyEvaluationContext context)
-    {
-        if (document is null)
-        {
+using System.Collections.Immutable;
+using StellaOps.Policy.Engine.Compilation;
+using StellaOps.Policy.Engine.Evaluation;
+
+namespace StellaOps.Policy.Engine.Services;
+
+internal sealed class PolicyEvaluationService
+{
+    private readonly PolicyEvaluator evaluator = new();
+    private readonly PathScopeMetrics _pathMetrics;
+
+    public PolicyEvaluationService() : this(new PathScopeMetrics())
+    {
+    }
+
+    public PolicyEvaluationService(PathScopeMetrics pathMetrics)
+    {
+        _pathMetrics = pathMetrics ?? throw new ArgumentNullException(nameof(pathMetrics));
+    }
+
+    public PolicyEvaluationResult Evaluate(PolicyIrDocument document, PolicyEvaluationContext context)
+    {
+        if (document is null)
+        {
             throw new ArgumentNullException(nameof(document));
         }
 
@@ -19,8 +29,10 @@ internal sealed class PolicyEvaluationService
         {
             throw new ArgumentNullException(nameof(context));
         }
-
-        var request = new PolicyEvaluationRequest(document, context);
-        return evaluator.Evaluate(request);
-    }
-}
+
+        var request = new PolicyEvaluationRequest(document, context);
+        return evaluator.Evaluate(request);
+    }
+
+    // PathScopeSimulationService partial class relies on _pathMetrics.
+}