Phase 1 Stream A — Core.Abstractions project + 11 capability interfaces + DriverTypeRegistry + interface-independence tests

New project src/ZB.MOM.WW.OtOpcUa.Core.Abstractions (.NET 10, BCL-only dependencies, GenerateDocumentationFile=true, TreatWarningsAsErrors=true) defining the contract surface every driver implements. Per docs/v2/plan.md decisions #4 (composable capability interfaces), #52 (streaming IAddressSpaceBuilder), #53 (capability discovery via `is` checks no flag enum), #54 (optional IRediscoverable sub-interface), #59 (Core.Abstractions internal-only for now design as if public).

Eleven capability interfaces:
- IDriver — required lifecycle / health / config-apply / memory-footprint accounting (per driver-stability.md Tier A/B allocation tracking)
- ITagDiscovery — discovers tags streaming to IAddressSpaceBuilder
- IReadable — on-demand reads idempotent for Polly retry
- IWritable — writes NOT auto-retried by default per decisions #44 + #45
- ISubscribable — data-change subscriptions covering both native (Galaxy MXAccess advisory, OPC UA monitored items, TwinCAT ADS) and driver-internal polled (Modbus, AB CIP, S7, FOCAS) mechanisms; OnDataChange callback regardless of source
- IAlarmSource — alarm events + acknowledge + AlarmSeverity enum mirroring acl-design.md NodePermissions alarm-severity values
- IHistoryProvider — HistoryReadRaw + HistoryReadProcessed with continuation points
- IRediscoverable — opt-in change-detection signal; static drivers don't implement
- IHostConnectivityProbe — generalized from Galaxy's GalaxyRuntimeProbeManager per plan §5a
- IDriverConfigEditor — Admin UI plug-point for per-driver custom config editors deferred to each driver's phase per decision #27
- IAddressSpaceBuilder — streaming builder API for driver-driven address-space construction

Plus DTOs: DriverDataType, SecurityClassification (mirroring v1 Galaxy model), DriverAttributeInfo (replaces Galaxy-specific GalaxyAttributeInfo per plan §5a), DriverHealth + DriverState, DataValueSnapshot (universal OPC UA quality + timestamp carrier per decision #13), HostConnectivityStatus + HostState + HostStatusChangedEventArgs, RediscoveryEventArgs, DataChangeEventArgs, AlarmEventArgs + AlarmAcknowledgeRequest + AlarmSeverity, WriteRequest + WriteResult, HistoryReadResult + HistoryAggregateType, ISubscriptionHandle + IAlarmSubscriptionHandle + IVariableHandle.

DriverTypeRegistry singleton with Register / Get / TryGet / All; thread-safe via Interlocked.Exchange snapshot replacement on registration; case-insensitive lookups; rejects duplicate registrations; rejects empty type names. DriverTypeMetadata record carries TypeName + AllowedNamespaceKinds (NamespaceKindCompatibility flags enum per decision #111) + per-config-tier JSON Schemas the validator checks at draft-publish time (decision #91).

Tests project tests/ZB.MOM.WW.OtOpcUa.Core.Abstractions.Tests (xUnit v3 1.1.0 matching existing test projects). 24 tests covering: 1) interface independence reflection check (no references outside BCL/System; all public types in root namespace; every capability interface is public); 2) DriverTypeRegistry round-trip, case-insensitive lookups, KeyNotFoundException on unknown, null on TryGet of unknown, InvalidOperationException on duplicate registration (case-insensitive too), All() enumeration, NamespaceKindCompatibility bitmask combinations, ArgumentException on empty type names.

Build: 0 errors, 4 warnings (only pre-existing transitive package vulnerability + analyzer hints). Full test suite: 845 passing / 1 failing — strict improvement over Phase 0 baseline (821/1) by the 24 new Core.Abstractions tests; no regressions in any other test project.

Phase 1 entry-gate record (docs/v2/implementation/entry-gate-phase-1.md) documents the deviation: only Stream A executed in this continuation since Streams B-E need SQL Server / GLAuth / Galaxy infrastructure standup per dev-environment.md Step 1, which is currently TODO.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
This commit is contained in:
Joseph Doherty
2026-04-17 14:15:55 -04:00
parent 45ffa3e7d4
commit 980ea5190c
23 changed files with 941 additions and 0 deletions

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using Shouldly;
using Xunit;
namespace ZB.MOM.WW.OtOpcUa.Core.Abstractions.Tests;
public sealed class DriverTypeRegistryTests
{
private static DriverTypeMetadata SampleMetadata(
string typeName = "Modbus",
NamespaceKindCompatibility allowed = NamespaceKindCompatibility.Equipment) =>
new(typeName, allowed,
DriverConfigJsonSchema: "{\"type\": \"object\"}",
DeviceConfigJsonSchema: "{\"type\": \"object\"}",
TagConfigJsonSchema: "{\"type\": \"object\"}");
[Fact]
public void Register_ThenGet_RoundTrips()
{
var registry = new DriverTypeRegistry();
var metadata = SampleMetadata();
registry.Register(metadata);
registry.Get("Modbus").ShouldBe(metadata);
}
[Fact]
public void Get_IsCaseInsensitive()
{
var registry = new DriverTypeRegistry();
registry.Register(SampleMetadata("Galaxy"));
registry.Get("galaxy").ShouldNotBeNull();
registry.Get("GALAXY").ShouldNotBeNull();
}
[Fact]
public void Get_UnknownType_Throws()
{
var registry = new DriverTypeRegistry();
registry.Register(SampleMetadata("Modbus"));
Should.Throw<KeyNotFoundException>(() => registry.Get("UnregisteredType"));
}
[Fact]
public void TryGet_UnknownType_ReturnsNull()
{
var registry = new DriverTypeRegistry();
registry.Register(SampleMetadata("Modbus"));
registry.TryGet("UnregisteredType").ShouldBeNull();
}
[Fact]
public void Register_DuplicateType_Throws()
{
var registry = new DriverTypeRegistry();
registry.Register(SampleMetadata("Modbus"));
Should.Throw<InvalidOperationException>(() => registry.Register(SampleMetadata("Modbus")));
}
[Fact]
public void Register_DuplicateTypeIsCaseInsensitive()
{
var registry = new DriverTypeRegistry();
registry.Register(SampleMetadata("Modbus"));
Should.Throw<InvalidOperationException>(() => registry.Register(SampleMetadata("modbus")));
}
[Fact]
public void All_ReturnsRegisteredTypes()
{
var registry = new DriverTypeRegistry();
registry.Register(SampleMetadata("Modbus"));
registry.Register(SampleMetadata("S7"));
registry.Register(SampleMetadata("Galaxy", NamespaceKindCompatibility.SystemPlatform));
var all = registry.All();
all.Count.ShouldBe(3);
all.Select(m => m.TypeName).ShouldBe(new[] { "Modbus", "S7", "Galaxy" }, ignoreOrder: true);
}
[Fact]
public void NamespaceKindCompatibility_FlagsAreBitmask()
{
// Per decision #111 — driver types like OpcUaClient may be valid for multiple namespace kinds.
var both = NamespaceKindCompatibility.Equipment | NamespaceKindCompatibility.SystemPlatform;
both.HasFlag(NamespaceKindCompatibility.Equipment).ShouldBeTrue();
both.HasFlag(NamespaceKindCompatibility.SystemPlatform).ShouldBeTrue();
both.HasFlag(NamespaceKindCompatibility.Simulated).ShouldBeFalse();
}
[Theory]
[InlineData(null)]
[InlineData("")]
[InlineData(" ")]
public void Get_RejectsEmptyTypeName(string? typeName)
{
var registry = new DriverTypeRegistry();
Should.Throw<ArgumentException>(() => registry.Get(typeName!));
}
}

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using System.Reflection;
using Shouldly;
using Xunit;
namespace ZB.MOM.WW.OtOpcUa.Core.Abstractions.Tests;
/// <summary>
/// Asserts that <c>Core.Abstractions</c> stays a true contract project — it must not depend on
/// any implementation type, any other OtOpcUa project, or anything beyond BCL + System types.
/// Per <c>docs/v2/plan.md</c> decision #59 (Core.Abstractions internal-only for now; design as
/// if public to minimize churn later).
/// </summary>
public sealed class InterfaceIndependenceTests
{
private static readonly Assembly Assembly = typeof(IDriver).Assembly;
[Fact]
public void Assembly_HasNoReferencesOutsideBcl()
{
// Allowed reference assembly name prefixes — BCL + the assembly itself.
var allowed = new[]
{
"System",
"Microsoft.Win32",
"netstandard",
"mscorlib",
"ZB.MOM.WW.OtOpcUa.Core.Abstractions",
};
var referenced = Assembly.GetReferencedAssemblies();
var disallowed = referenced
.Where(r => !allowed.Any(a => r.Name!.StartsWith(a, StringComparison.Ordinal)))
.ToList();
disallowed.ShouldBeEmpty(
$"Core.Abstractions must reference only BCL/System assemblies. " +
$"Found disallowed references: {string.Join(", ", disallowed.Select(a => a.Name))}");
}
[Fact]
public void AllPublicTypes_LiveInRootNamespace()
{
// Per the decision-#59 "design as if public" rule — no nested sub-namespaces; one flat surface.
var publicTypes = Assembly.GetExportedTypes();
var nonRoot = publicTypes
.Where(t => t.Namespace != "ZB.MOM.WW.OtOpcUa.Core.Abstractions")
.ToList();
nonRoot.ShouldBeEmpty(
$"Core.Abstractions should expose all public types in the root namespace. " +
$"Found types in other namespaces: {string.Join(", ", nonRoot.Select(t => $"{t.FullName}"))}");
}
[Theory]
[InlineData(typeof(IDriver))]
[InlineData(typeof(ITagDiscovery))]
[InlineData(typeof(IReadable))]
[InlineData(typeof(IWritable))]
[InlineData(typeof(ISubscribable))]
[InlineData(typeof(IAlarmSource))]
[InlineData(typeof(IHistoryProvider))]
[InlineData(typeof(IRediscoverable))]
[InlineData(typeof(IHostConnectivityProbe))]
[InlineData(typeof(IDriverConfigEditor))]
[InlineData(typeof(IAddressSpaceBuilder))]
public void EveryCapabilityInterface_IsPublic(Type type)
{
type.IsPublic.ShouldBeTrue($"{type.Name} must be public — drivers in separate assemblies implement it.");
type.IsInterface.ShouldBeTrue($"{type.Name} must be an interface, not a class.");
}
}

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<TargetFramework>net10.0</TargetFramework>
<Nullable>enable</Nullable>
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<RootNamespace>ZB.MOM.WW.OtOpcUa.Core.Abstractions.Tests</RootNamespace>
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