fix(dcl): ASCII-only connection actor names, guarded ActorOf, and gate rejection of colliding connection names (review 2026-10-21 lane A M2)

ConnectionActorNames.Sanitize (shared by the DCL manager and the site deploy gate) keeps ASCII letters/digits and -_.*+:@&=,!~';() only. The manager fails a connection whose sanitised name is invalid or already used (Error + site event) instead of restarting; DeployCompileValidator rejects a config whose connection names collide after sanitising.
2026-10-22 09:05:07 -04:00
parent 3c11510c52
commit 099b2221d6
6 changed files with 210 additions and 6 deletions
@@ -0,0 +1,92 @@
+using Akka.Actor;
+using Akka.TestKit.Xunit2;
+using NSubstitute;
+using ZB.MOM.WW.ScadaBridge.Commons.Interfaces.Protocol;
+using ZB.MOM.WW.ScadaBridge.Commons.Messages.DataConnection;
+using ZB.MOM.WW.ScadaBridge.Commons.Types.Enums;
+using ZB.MOM.WW.ScadaBridge.DataConnectionLayer.Actors;
+using ZB.MOM.WW.ScadaBridge.HealthMonitoring;
+
+namespace ZB.MOM.WW.ScadaBridge.DataConnectionLayer.Tests.Actors;
+
+/// <summary>
+/// Review 2026-10-21 (lane A M2): a data connection name becomes its DataConnectionActor's
+/// name. The old sanitiser kept non-ASCII letters and '$' (both refused by Akka) and mapped
+/// "PLC A" and "PLC-A" to the same name; either made <c>Context.ActorOf</c> throw on the
+/// manager's own thread, restarting it and dropping every live connection.
+/// </summary>
+[Collection("DataConnectionManagerActor")]
+public class ConnectionActorNameTests : TestKit
+{
+    private readonly IDataConnectionFactory _factory = Substitute.For<IDataConnectionFactory>();
+    private readonly ISiteHealthCollector _health = Substitute.For<ISiteHealthCollector>();
+    private readonly DataConnectionOptions _options = new()
+    {
+        ReconnectInterval = TimeSpan.FromMilliseconds(100),
+        TagResolutionRetryInterval = TimeSpan.FromMilliseconds(200)
+    };
+
+    /// <summary>Creates the test kit with a factory that hands out connected mock adapters.</summary>
+    public ConnectionActorNameTests()
+    {
+        _factory.Create(Arg.Any<string>(), Arg.Any<IDictionary<string, string>>()).Returns(_ =>
+        {
+            var adapter = Substitute.For<IDataConnection>();
+            adapter.ConnectAsync(Arg.Any<IDictionary<string, string>>(), Arg.Any<CancellationToken>())
+                .Returns(Task.CompletedTask);
+            adapter.Status.Returns(ConnectionHealth.Connected);
+            adapter.SubscribeAsync(Arg.Any<string>(), Arg.Any<SubscriptionCallback>(), Arg.Any<CancellationToken>())
+                .Returns("sub-1");
+            return adapter;
+        });
+    }
+
+    /// <summary>Every sanitised name is a legal Akka path element, including non-ASCII and '$' input.</summary>
+    [Theory]
+    [InlineData("PLC A")]
+    [InlineData("Ofen Süd")]
+    [InlineData("$PLC")]
+    [InlineData("名前")]
+    [InlineData("a/b#c[d]%e")]
+    [InlineData("")]
+    public void Sanitize_AlwaysYieldsAValidActorName(string connectionName)
+    {
+        Assert.True(ActorPath.IsValidPathElement(ConnectionActorNames.Sanitize(connectionName)));
+    }
+
+    private IActorRef CreateManager() => Sys.ActorOf(Props.Create(() =>
+        new DataConnectionManagerActor(_factory, _options, _health)));
+
+    private SubscribeTagsResponse Subscribe(IActorRef manager, string connection)
+    {
+        manager.Tell(new SubscribeTagsRequest(
+            Guid.NewGuid().ToString("N"), "inst1", connection, ["tag1"], DateTimeOffset.UtcNow));
+        return ExpectMsg<SubscribeTagsResponse>(TimeSpan.FromSeconds(10));
+    }
+
+    /// <summary>A non-ASCII connection name is created instead of crashing the manager.</summary>
+    [Fact]
+    public void NonAsciiConnectionName_IsCreated()
+    {
+        var manager = CreateManager();
+        manager.Tell(new CreateConnectionCommand("Ofen Süd", "OpcUa", new Dictionary<string, string>(), null, 3));
+
+        var response = Subscribe(manager, "Ofen Süd");
+        Assert.DoesNotContain("Unknown connection", response.ErrorMessage ?? "");
+    }
+
+    /// <summary>
+    /// Two names that sanitise alike: the second fails alone; the first — and the manager —
+    /// keep working.
+    /// </summary>
+    [Fact]
+    public void CollidingSanitisedNames_FailOnlyTheLaterConnection()
+    {
+        var manager = CreateManager();
+        manager.Tell(new CreateConnectionCommand("PLC A", "OpcUa", new Dictionary<string, string>(), null, 3));
+        manager.Tell(new CreateConnectionCommand("PLC-A", "OpcUa", new Dictionary<string, string>(), null, 3));
+
+        Assert.Contains("Unknown connection", Subscribe(manager, "PLC-A").ErrorMessage);
+        Assert.DoesNotContain("Unknown connection", Subscribe(manager, "PLC A").ErrorMessage ?? "");
+    }
+}