Phase 3 PR 33 — DriverHostStatus entity + EF migration (data-layer for LMX #7). New DriverHostStatus entity with composite key (NodeId, DriverInstanceId, HostName) persists each server node's per-host connectivity view — one row per (server node, driver instance, probe-reported host), which means a redundant 2-node cluster with one Galaxy driver reporting 3 platforms produces 6 rows because each server node owns its own runtime view of the shared host topology, not 3. Fields: NodeId (64), DriverInstanceId (64), HostName (256 — fits Galaxy FQDNs and Modbus host:port strings), State (DriverHostState enum — Unknown/Running/Stopped/Faulted, persisted as nvarchar(16) via HasConversion<string> so DBAs inspecting the table see readable state names not ordinals), StateChangedUtc + LastSeenUtc (datetime2(3) — StateChangedUtc tracks actual transitions while LastSeenUtc advances on every publisher heartbeat so the Admin UI can flag stale rows from a crashed Server independent of State), Detail (nullable 1024 — exception message from the driver's probe when Faulted, null otherwise).

DriverHostState enum lives in Configuration.Enums/ rather than reusing Core.Abstractions.HostState so the Configuration project stays free of driver-runtime dependencies (it's referenced by both the Admin process and the Server process, so pulling in the driver-abstractions assembly to every Admin build would be unnecessary weight). The server-side publisher hosted service (follow-up PR 34) will translate HostStatusChangedEventArgs.NewState to this enum on every transition. No foreign key to ClusterNode — a Server may start reporting host status before its ClusterNode row exists (first-boot bootstrap), and we'd rather keep the status row than drop it. The Admin-side service that renders the dashboard will left-join on NodeId when presenting. Two indexes declared: IX_DriverHostStatus_Node drives the per-cluster drill-down (Admin UI joins ClusterNode on ClusterId to pick which NodeIds to fetch), IX_DriverHostStatus_LastSeen drives the stale-row query (now - LastSeen > threshold). EF migration AddDriverHostStatus creates the table + PK + both indexes. Model snapshot updated. SchemaComplianceTests expected-tables list extended. DriverHostStatusTests (3 new cases, category SchemaCompliance, uses the shared fixture DB): composite key allows same (host, driver) across different nodes AND same (node, host) across different drivers — both real-world cases the publisher needs to support; upsert-in-place pattern (fetch-by-composite-PK, mutate, save) produces one row not two — the pattern the publisher will use; State enum persists as string not int — reading the DB via ADO.NET returns 'Faulted' not '3'. Configuration.Tests SchemaCompliance suite: 10 pass / 0 fail (7 prior + 3 new). Configuration build clean. No Server or Admin code changes yet — publisher + /hosts page are PR 34. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-04-18 15:38:41 -04:00
parent a9357600e7
commit 8464e3f376
8 changed files with 1576 additions and 0 deletions
--- a/src/ZB.MOM.WW.OtOpcUa.Configuration/Migrations/20260418193608_AddDriverHostStatus.cs
+++ b/src/ZB.MOM.WW.OtOpcUa.Configuration/Migrations/20260418193608_AddDriverHostStatus.cs
@@ -0,0 +1,49 @@
+using System;
+using Microsoft.EntityFrameworkCore.Migrations;
+
+#nullable disable
+
+namespace ZB.MOM.WW.OtOpcUa.Configuration.Migrations
+{
+    /// <inheritdoc />
+    public partial class AddDriverHostStatus : Migration
+    {
+        /// <inheritdoc />
+        protected override void Up(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.CreateTable(
+                name: "DriverHostStatus",
+                columns: table => new
+                {
+                    NodeId = table.Column<string>(type: "nvarchar(64)", maxLength: 64, nullable: false),
+                    DriverInstanceId = table.Column<string>(type: "nvarchar(64)", maxLength: 64, nullable: false),
+                    HostName = table.Column<string>(type: "nvarchar(256)", maxLength: 256, nullable: false),
+                    State = table.Column<string>(type: "nvarchar(16)", maxLength: 16, nullable: false),
+                    StateChangedUtc = table.Column<DateTime>(type: "datetime2(3)", nullable: false),
+                    LastSeenUtc = table.Column<DateTime>(type: "datetime2(3)", nullable: false),
+                    Detail = table.Column<string>(type: "nvarchar(1024)", maxLength: 1024, nullable: true)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_DriverHostStatus", x => new { x.NodeId, x.DriverInstanceId, x.HostName });
+                });
+
+            migrationBuilder.CreateIndex(
+                name: "IX_DriverHostStatus_LastSeen",
+                table: "DriverHostStatus",
+                column: "LastSeenUtc");
+
+            migrationBuilder.CreateIndex(
+                name: "IX_DriverHostStatus_Node",
+                table: "DriverHostStatus",
+                column: "NodeId");
+        }
+
+        /// <inheritdoc />
+        protected override void Down(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.DropTable(
+                name: "DriverHostStatus");
+        }
+    }
+}