2697af31d1
SdkServiceLevelPublisher writes Server.ServiceLevel through the SDK's ServerObjectState — the standard OPC UA non-transparent-redundancy signal clients use to pick a primary. Writes are guarded by DiagnosticsLock so concurrent SDK diagnostics scans don't fight with our updates. DeferredServiceLevelPublisher mirrors the DeferredAddressSpaceSink late- binding pattern: Akka actors resolve IServiceLevelPublisher at construction, hosted service swaps the SDK publisher in after StandardServer.Start. Host Program.cs registers DeferredServiceLevelPublisher as the singleton bound to IServiceLevelPublisher; OtOpcUaServerHostedService gets it injected and fills it once IServerInternal is available. Tests boot a real StandardServer on a free port (cross-platform), call Publish, then verify ServerObject.ServiceLevel.Value reflects the write. 5 new tests; OpcUaServer suite now 45/45 green (was 40, +5). Closes #81 residual. Unblocks Task 60 (OPC UA dual-endpoint + ServiceLevel tests).
95 lines
3.3 KiB
C#
95 lines
3.3 KiB
C#
using Microsoft.Extensions.Logging.Abstractions;
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using Opc.Ua.Server;
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using Shouldly;
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using Xunit;
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namespace ZB.MOM.WW.OtOpcUa.OpcUaServer.Tests;
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/// <summary>
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/// #81 residual — verifies <see cref="SdkServiceLevelPublisher"/> locates the standard
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/// <c>VariableIds.Server_ServiceLevel</c> node through the SDK's DiagnosticsNodeManager and
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/// writes the byte value. Boots a real <see cref="StandardServer"/> on a free port so the
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/// SDK populates its predefined diagnostics nodes — that's what production sees.
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/// </summary>
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public sealed class SdkServiceLevelPublisherTests : IDisposable
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{
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private static CancellationToken Ct => TestContext.Current.CancellationToken;
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private readonly string _pkiRoot = Path.Combine(
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Path.GetTempPath(),
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$"otopcua-pki-{Guid.NewGuid():N}");
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[Fact]
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public async Task Publish_writes_value_to_Server_ServiceLevel_variable()
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{
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var server = new StandardServer();
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await using var host = new OpcUaApplicationHost(
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new OpcUaApplicationHostOptions
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{
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ApplicationName = "OtOpcUa.SvcLevel",
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ApplicationUri = $"urn:OtOpcUa.SvcLevel:{Guid.NewGuid():N}",
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OpcUaPort = AllocateFreePort(),
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PublicHostname = "localhost",
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PkiStoreRoot = _pkiRoot,
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},
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NullLogger<OpcUaApplicationHost>.Instance);
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await host.StartAsync(server, Ct);
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var publisher = new SdkServiceLevelPublisher(
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server.CurrentInstance,
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NullLogger<SdkServiceLevelPublisher>.Instance);
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publisher.Publish(200);
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var variable = server.CurrentInstance.ServerObject.ServiceLevel;
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variable.ShouldNotBeNull("Server.ServiceLevel must be present in the address space");
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variable.Value.ShouldBe((byte)200);
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}
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[Fact]
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public async Task Publish_is_idempotent_when_called_multiple_times()
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{
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var server = new StandardServer();
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await using var host = new OpcUaApplicationHost(
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new OpcUaApplicationHostOptions
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{
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ApplicationName = "OtOpcUa.SvcLevel.Idem",
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ApplicationUri = $"urn:OtOpcUa.SvcLevel.Idem:{Guid.NewGuid():N}",
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OpcUaPort = AllocateFreePort(),
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PublicHostname = "localhost",
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PkiStoreRoot = _pkiRoot,
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},
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NullLogger<OpcUaApplicationHost>.Instance);
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await host.StartAsync(server, Ct);
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var publisher = new SdkServiceLevelPublisher(
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server.CurrentInstance,
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NullLogger<SdkServiceLevelPublisher>.Instance);
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publisher.Publish(100);
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publisher.Publish(150);
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publisher.Publish(240);
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server.CurrentInstance.ServerObject.ServiceLevel.Value.ShouldBe((byte)240);
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}
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private static int AllocateFreePort()
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{
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using var listener = new System.Net.Sockets.TcpListener(System.Net.IPAddress.Loopback, 0);
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listener.Start();
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var port = ((System.Net.IPEndPoint)listener.LocalEndpoint).Port;
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listener.Stop();
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return port;
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}
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public void Dispose()
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{
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if (Directory.Exists(_pkiRoot))
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{
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try { Directory.Delete(_pkiRoot, recursive: true); }
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catch { /* best-effort */ }
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}
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}
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}
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