Rate Policy

Libraries/Esiur/Resource/Attributes/RateControlAttribute.cs

@@ -0,0 +1,26 @@
+using System;
+
+namespace Esiur.Resource;
+
+/// <summary>
+/// Applies a named Warehouse rate policy to an exported function or property setter.
+/// </summary>
+[AttributeUsage(
+    AttributeTargets.Method | AttributeTargets.Property,
+    AllowMultiple = false,
+    Inherited = true)]
+public sealed class RateControlAttribute : Attribute
+{
+    /// <summary>
+    /// Gets the name used to resolve the policy from the owning Warehouse.
+    /// </summary>
+    public string PolicyName { get; }
+
+    public RateControlAttribute(string policyName)
+    {
+        if (string.IsNullOrWhiteSpace(policyName))
+            throw new ArgumentException("A rate policy name is required.", nameof(policyName));
+
+        PolicyName = policyName;
+    }
+}