Merge pull request 'EquipmentNamespaceContentLoader � Config-DB loader for walker wire-in' (#156) from equipment-content-loader into v2

This commit was merged in pull request #156.
This commit is contained in:
2026-04-20 03:21:48 -04:00
2 changed files with 258 additions and 0 deletions

View File

@@ -0,0 +1,86 @@
using Microsoft.EntityFrameworkCore;
using ZB.MOM.WW.OtOpcUa.Configuration;
using ZB.MOM.WW.OtOpcUa.Configuration.Entities;
using ZB.MOM.WW.OtOpcUa.Core.OpcUa;
namespace ZB.MOM.WW.OtOpcUa.Server.OpcUa;
/// <summary>
/// Loads the <see cref="EquipmentNamespaceContent"/> snapshot the
/// <see cref="EquipmentNodeWalker"/> consumes, scoped to a single
/// (driverInstanceId, generationId) pair. Joins the four row sets the walker expects:
/// UnsAreas for the driver's cluster, UnsLines under those areas, Equipment bound to
/// this driver + its lines, and Tags bound to this driver + its equipment — all at the
/// supplied generation.
/// </summary>
/// <remarks>
/// <para>The walker is driver-instance-scoped (decisions #116#121 put the UNS in the
/// Equipment-kind namespace owned by one driver instance at a time), so this loader is
/// too — a single call returns one driver's worth of rows, never the whole fleet.</para>
///
/// <para>Returns <c>null</c> when the driver instance has no Equipment rows at the
/// supplied generation. The wire-in in <see cref="OpcUaApplicationHost"/> treats null as
/// "this driver has no UNS content, skip the walker and let DiscoverAsync own the whole
/// address space" — the backward-compat path for drivers whose namespace kind is not
/// Equipment (Modbus / AB CIP / TwinCAT / FOCAS).</para>
/// </remarks>
public sealed class EquipmentNamespaceContentLoader
{
private readonly OtOpcUaConfigDbContext _db;
public EquipmentNamespaceContentLoader(OtOpcUaConfigDbContext db)
{
_db = db;
}
/// <summary>
/// Load the walker-shaped snapshot for <paramref name="driverInstanceId"/> at
/// <paramref name="generationId"/>. Returns <c>null</c> when the driver has no
/// Equipment rows at that generation.
/// </summary>
public async Task<EquipmentNamespaceContent?> LoadAsync(
string driverInstanceId, long generationId, CancellationToken ct)
{
var equipment = await _db.Equipment
.AsNoTracking()
.Where(e => e.DriverInstanceId == driverInstanceId && e.GenerationId == generationId && e.Enabled)
.ToListAsync(ct).ConfigureAwait(false);
if (equipment.Count == 0)
return null;
// Filter UNS tree to only the lines + areas that host at least one Equipment bound to
// this driver — skips loading unrelated UNS branches from the cluster. LinesByArea
// grouping is driven off the Equipment rows so an empty line (no equipment) doesn't
// pull a pointless folder into the walker output.
var lineIds = equipment.Select(e => e.UnsLineId).Distinct(StringComparer.OrdinalIgnoreCase).ToArray();
var lines = await _db.UnsLines
.AsNoTracking()
.Where(l => l.GenerationId == generationId && lineIds.Contains(l.UnsLineId))
.ToListAsync(ct).ConfigureAwait(false);
var areaIds = lines.Select(l => l.UnsAreaId).Distinct(StringComparer.OrdinalIgnoreCase).ToArray();
var areas = await _db.UnsAreas
.AsNoTracking()
.Where(a => a.GenerationId == generationId && areaIds.Contains(a.UnsAreaId))
.ToListAsync(ct).ConfigureAwait(false);
// Tags belonging to this driver at this generation. Walker skips Tags with null
// EquipmentId (those are SystemPlatform-kind Galaxy tags per decision #120) but we
// load them anyway so the same rowset can drive future non-Equipment-kind walks
// without re-hitting the DB. Filtering here is a future optimization; today the
// per-tag cost is bounded by driver scope.
var tags = await _db.Tags
.AsNoTracking()
.Where(t => t.DriverInstanceId == driverInstanceId && t.GenerationId == generationId)
.ToListAsync(ct).ConfigureAwait(false);
return new EquipmentNamespaceContent(
Areas: areas,
Lines: lines,
Equipment: equipment,
Tags: tags);
}
}

View File

@@ -0,0 +1,172 @@
using Microsoft.EntityFrameworkCore;
using Shouldly;
using Xunit;
using ZB.MOM.WW.OtOpcUa.Configuration;
using ZB.MOM.WW.OtOpcUa.Configuration.Entities;
using ZB.MOM.WW.OtOpcUa.Configuration.Enums;
using ZB.MOM.WW.OtOpcUa.Server.OpcUa;
namespace ZB.MOM.WW.OtOpcUa.Server.Tests;
[Trait("Category", "Unit")]
public sealed class EquipmentNamespaceContentLoaderTests : IDisposable
{
private const string DriverId = "galaxy-prod";
private const string OtherDriverId = "galaxy-dev";
private const long Gen = 5;
private readonly OtOpcUaConfigDbContext _db;
private readonly EquipmentNamespaceContentLoader _loader;
public EquipmentNamespaceContentLoaderTests()
{
var options = new DbContextOptionsBuilder<OtOpcUaConfigDbContext>()
.UseInMemoryDatabase($"eq-content-loader-{Guid.NewGuid():N}")
.Options;
_db = new OtOpcUaConfigDbContext(options);
_loader = new EquipmentNamespaceContentLoader(_db);
}
public void Dispose() => _db.Dispose();
[Fact]
public async Task Returns_Null_When_Driver_Has_No_Equipment_At_Generation()
{
var result = await _loader.LoadAsync(DriverId, Gen, CancellationToken.None);
result.ShouldBeNull();
}
[Fact]
public async Task Loads_Areas_Lines_Equipment_Tags_For_Driver_At_Generation()
{
SeedBaseline();
var result = await _loader.LoadAsync(DriverId, Gen, CancellationToken.None);
result.ShouldNotBeNull();
result!.Areas.ShouldHaveSingleItem().UnsAreaId.ShouldBe("area-1");
result.Lines.ShouldHaveSingleItem().UnsLineId.ShouldBe("line-a");
result.Equipment.Count.ShouldBe(2);
result.Equipment.ShouldContain(e => e.EquipmentId == "eq-oven-3");
result.Equipment.ShouldContain(e => e.EquipmentId == "eq-press-7");
result.Tags.Count.ShouldBe(2);
result.Tags.ShouldContain(t => t.TagId == "tag-temp");
result.Tags.ShouldContain(t => t.TagId == "tag-press");
}
[Fact]
public async Task Skips_Other_Drivers_Equipment()
{
SeedBaseline();
// Equipment + Tag owned by a different driver at the same generation — must not leak.
_db.Equipment.Add(new Equipment
{
EquipmentRowId = Guid.NewGuid(), GenerationId = Gen,
EquipmentId = "eq-other", EquipmentUuid = Guid.NewGuid(),
DriverInstanceId = OtherDriverId, UnsLineId = "line-a", Name = "other-eq",
MachineCode = "MC-other",
});
_db.Tags.Add(new Tag
{
TagRowId = Guid.NewGuid(), GenerationId = Gen, TagId = "tag-other",
DriverInstanceId = OtherDriverId, EquipmentId = "eq-other",
Name = "OtherTag", DataType = "Int32",
AccessLevel = TagAccessLevel.ReadWrite, TagConfig = "plcaddr-other",
});
await _db.SaveChangesAsync();
var result = await _loader.LoadAsync(DriverId, Gen, CancellationToken.None);
result.ShouldNotBeNull();
result!.Equipment.ShouldNotContain(e => e.EquipmentId == "eq-other");
result.Tags.ShouldNotContain(t => t.TagId == "tag-other");
}
[Fact]
public async Task Skips_Other_Generations()
{
SeedBaseline();
// Same driver, different generation — must not leak in. Walker consumes one sealed
// generation per bootstrap per decision #148.
_db.Equipment.Add(new Equipment
{
EquipmentRowId = Guid.NewGuid(), GenerationId = 99,
EquipmentId = "eq-futuristic", EquipmentUuid = Guid.NewGuid(),
DriverInstanceId = DriverId, UnsLineId = "line-a", Name = "futuristic",
MachineCode = "MC-fut",
});
await _db.SaveChangesAsync();
var result = await _loader.LoadAsync(DriverId, Gen, CancellationToken.None);
result.ShouldNotBeNull();
result!.Equipment.ShouldNotContain(e => e.EquipmentId == "eq-futuristic");
}
[Fact]
public async Task Skips_Disabled_Equipment()
{
SeedBaseline();
_db.Equipment.Add(new Equipment
{
EquipmentRowId = Guid.NewGuid(), GenerationId = Gen,
EquipmentId = "eq-disabled", EquipmentUuid = Guid.NewGuid(),
DriverInstanceId = DriverId, UnsLineId = "line-a", Name = "disabled-eq",
MachineCode = "MC-dis", Enabled = false,
});
await _db.SaveChangesAsync();
var result = await _loader.LoadAsync(DriverId, Gen, CancellationToken.None);
result.ShouldNotBeNull();
result!.Equipment.ShouldNotContain(e => e.EquipmentId == "eq-disabled");
}
private void SeedBaseline()
{
_db.UnsAreas.Add(new UnsArea
{
UnsAreaRowId = Guid.NewGuid(), UnsAreaId = "area-1", ClusterId = "c-warsaw",
Name = "warsaw", GenerationId = Gen,
});
_db.UnsLines.Add(new UnsLine
{
UnsLineRowId = Guid.NewGuid(), UnsLineId = "line-a", UnsAreaId = "area-1",
Name = "line-a", GenerationId = Gen,
});
_db.Equipment.AddRange(
new Equipment
{
EquipmentRowId = Guid.NewGuid(), GenerationId = Gen,
EquipmentId = "eq-oven-3", EquipmentUuid = Guid.NewGuid(),
DriverInstanceId = DriverId, UnsLineId = "line-a", Name = "oven-3",
MachineCode = "MC-oven-3",
},
new Equipment
{
EquipmentRowId = Guid.NewGuid(), GenerationId = Gen,
EquipmentId = "eq-press-7", EquipmentUuid = Guid.NewGuid(),
DriverInstanceId = DriverId, UnsLineId = "line-a", Name = "press-7",
MachineCode = "MC-press-7",
});
_db.Tags.AddRange(
new Tag
{
TagRowId = Guid.NewGuid(), GenerationId = Gen, TagId = "tag-temp",
DriverInstanceId = DriverId, EquipmentId = "eq-oven-3",
Name = "Temperature", DataType = "Int32",
AccessLevel = TagAccessLevel.ReadWrite, TagConfig = "plcaddr-temperature",
},
new Tag
{
TagRowId = Guid.NewGuid(), GenerationId = Gen, TagId = "tag-press",
DriverInstanceId = DriverId, EquipmentId = "eq-press-7",
Name = "PressTemp", DataType = "Int32",
AccessLevel = TagAccessLevel.ReadWrite, TagConfig = "plcaddr-press-temp",
});
_db.SaveChanges();
}
}