refactor(redundancy): move ServiceLevelCalculator to Core.Cluster (shared, Runtime-reachable)

2026-06-15 12:45:17 -04:00
parent 7605f4d8fd
commit ff0f62db38
2 changed files with 2 additions and 2 deletions
@@ -1,43 +0,0 @@
-using Akka.Cluster;
-
-namespace ZB.MOM.WW.OtOpcUa.ControlPlane.Redundancy;
-
-public readonly record struct NodeHealthInputs(
-    MemberStatus MemberState,
-    bool DbReachable,
-    bool OpcUaProbeOk,
-    bool Stale,
-    bool IsDriverRoleLeader);
-
-/// <summary>
-/// Pure ServiceLevel computation per design §6. Output range 0–255, where higher = "more
-/// authoritative." The OPC UA SDK exposes this as the node's <c>ServiceLevel</c> Variable and
-/// redundant clients use it to pick which server to subscribe to.
-///
-/// Tiering:
-/// - Member not Up/Joining: 0 (cluster cannot trust this node).
-/// - DB reachable + OPC UA probe ok + not stale: 240 (full service).
-/// - Stale config (DB reachable or not, OPC UA probe state ignored): 100 or 200 depending on DB.
-/// - +10 bonus when this node holds the role-leader lease for the "driver" role.
-/// </summary>
-public static class ServiceLevelCalculator
-{
-    /// <summary>Computes the service level (0-255) based on node health inputs.</summary>
-    /// <param name="h">The node health inputs including cluster state, database reachability, and probe status.</param>
-    /// <returns>A service level byte value (0-255) indicating node authority, where higher values indicate more authoritative nodes.</returns>
-    public static byte Compute(NodeHealthInputs h)
-    {
-        if (h.MemberState is not (MemberStatus.Up or MemberStatus.Joining))
-            return 0;
-
-        var basis = (h.DbReachable, h.OpcUaProbeOk, h.Stale) switch
-        {
-            (true,  true,  false) => 240,
-            (true,  _,     true)  => 200,
-            (false, _,     true)  => 100,
-            _ => 0,
-        };
-
-        return (byte)Math.Clamp(basis + (h.IsDriverRoleLeader ? 10 : 0), 0, 255);
-    }
-}