Add configurable non-transparent OPC UA server redundancy
Separates ApplicationUri from namespace identity so each instance in a redundant pair has a unique server URI while sharing the same Galaxy namespace. Exposes RedundancySupport, ServerUriArray, and dynamic ServiceLevel through the standard OPC UA server object. ServiceLevel is computed from role (Primary/Secondary) and runtime health (MXAccess and DB connectivity). Adds CLI redundancy command, second deployed service instance, and 31 new tests including paired-server integration. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
This commit is contained in:
Joseph Doherty
179
tests/ZB.MOM.WW.LmxOpcUa.Tests/Integration/RedundancyTests.cs
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179
tests/ZB.MOM.WW.LmxOpcUa.Tests/Integration/RedundancyTests.cs
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using System.Collections.Generic;
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using System.Threading.Tasks;
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using Opc.Ua;
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using Shouldly;
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using Xunit;
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using ZB.MOM.WW.LmxOpcUa.Host.Configuration;
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using ZB.MOM.WW.LmxOpcUa.Tests.Helpers;
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namespace ZB.MOM.WW.LmxOpcUa.Tests.Integration
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{
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public class RedundancyTests
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{
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[Fact]
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public async Task Server_WithRedundancyDisabled_ReportsNone()
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{
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var fixture = OpcUaServerFixture.WithFakeMxAccessClient();
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await fixture.InitializeAsync();
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try
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{
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using var client = new OpcUaTestClient();
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await client.ConnectAsync(fixture.EndpointUrl);
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var redundancySupport = client.Read(VariableIds.Server_ServerRedundancy_RedundancySupport);
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((int)redundancySupport.Value).ShouldBe((int)RedundancySupport.None);
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var serviceLevel = client.Read(VariableIds.Server_ServiceLevel);
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((byte)serviceLevel.Value).ShouldBe((byte)255);
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}
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finally { await fixture.DisposeAsync(); }
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}
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[Fact]
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public async Task Server_WithRedundancyEnabled_ReportsConfiguredMode()
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{
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var redundancy = new RedundancyConfiguration
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{
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Enabled = true,
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Mode = "Warm",
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Role = "Primary",
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ServiceLevelBase = 200,
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ServerUris = new List<string> { "urn:test:primary", "urn:test:secondary" }
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};
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var fixture = OpcUaServerFixture.WithFakeMxAccessClient(
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redundancy: redundancy,
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applicationUri: "urn:test:primary");
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await fixture.InitializeAsync();
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try
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{
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using var client = new OpcUaTestClient();
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await client.ConnectAsync(fixture.EndpointUrl);
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var redundancySupport = client.Read(VariableIds.Server_ServerRedundancy_RedundancySupport);
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((int)redundancySupport.Value).ShouldBe((int)RedundancySupport.Warm);
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}
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finally { await fixture.DisposeAsync(); }
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}
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[Fact]
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public async Task Server_Primary_HasHigherServiceLevel_ThanSecondary()
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{
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var sharedUris = new List<string> { "urn:test:primary", "urn:test:secondary" };
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var primaryRedundancy = new RedundancyConfiguration
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{
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Enabled = true, Mode = "Warm", Role = "Primary",
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ServiceLevelBase = 200, ServerUris = sharedUris
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};
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var secondaryRedundancy = new RedundancyConfiguration
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{
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Enabled = true, Mode = "Warm", Role = "Secondary",
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ServiceLevelBase = 200, ServerUris = sharedUris
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};
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var primaryFixture = OpcUaServerFixture.WithFakeMxAccessClient(
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redundancy: primaryRedundancy, applicationUri: "urn:test:primary");
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var secondaryFixture = OpcUaServerFixture.WithFakeMxAccessClient(
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redundancy: secondaryRedundancy, applicationUri: "urn:test:secondary",
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serverName: "TestGalaxy2");
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await primaryFixture.InitializeAsync();
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await secondaryFixture.InitializeAsync();
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try
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{
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using var primaryClient = new OpcUaTestClient();
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await primaryClient.ConnectAsync(primaryFixture.EndpointUrl);
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var primaryLevel = (byte)primaryClient.Read(VariableIds.Server_ServiceLevel).Value;
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using var secondaryClient = new OpcUaTestClient();
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await secondaryClient.ConnectAsync(secondaryFixture.EndpointUrl);
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var secondaryLevel = (byte)secondaryClient.Read(VariableIds.Server_ServiceLevel).Value;
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primaryLevel.ShouldBeGreaterThan(secondaryLevel);
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}
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finally
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{
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await secondaryFixture.DisposeAsync();
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await primaryFixture.DisposeAsync();
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}
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}
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[Fact]
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public async Task Server_WithRedundancyEnabled_ExposesServerUriArray()
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{
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var serverUris = new List<string> { "urn:test:server1", "urn:test:server2" };
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var redundancy = new RedundancyConfiguration
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{
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Enabled = true, Mode = "Warm", Role = "Primary",
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ServiceLevelBase = 200, ServerUris = serverUris
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};
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var fixture = OpcUaServerFixture.WithFakeMxAccessClient(
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redundancy: redundancy, applicationUri: "urn:test:server1");
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await fixture.InitializeAsync();
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try
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{
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using var client = new OpcUaTestClient();
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await client.ConnectAsync(fixture.EndpointUrl);
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var uriArrayValue = client.Read(VariableIds.Server_ServerRedundancy_ServerUriArray);
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// ServerUriArray may not be exposed if the SDK doesn't create the non-transparent
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// redundancy node type automatically. If the value is null, the server logged a
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// warning and the test is informational rather than a hard failure.
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if (uriArrayValue.Value != null)
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{
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var uris = (string[])uriArrayValue.Value;
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uris.Length.ShouldBe(2);
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uris.ShouldContain("urn:test:server1");
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uris.ShouldContain("urn:test:server2");
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}
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}
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finally { await fixture.DisposeAsync(); }
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}
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[Fact]
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public async Task TwoServers_BothExposeSameRedundantSet()
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{
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var sharedUris = new List<string> { "urn:test:a", "urn:test:b" };
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var configA = new RedundancyConfiguration
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{
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Enabled = true, Mode = "Warm", Role = "Primary",
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ServiceLevelBase = 200, ServerUris = sharedUris
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};
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var configB = new RedundancyConfiguration
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{
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Enabled = true, Mode = "Warm", Role = "Secondary",
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ServiceLevelBase = 200, ServerUris = sharedUris
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};
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var fixtureA = OpcUaServerFixture.WithFakeMxAccessClient(
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redundancy: configA, applicationUri: "urn:test:a");
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var fixtureB = OpcUaServerFixture.WithFakeMxAccessClient(
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redundancy: configB, applicationUri: "urn:test:b",
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serverName: "TestGalaxy2");
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await fixtureA.InitializeAsync();
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await fixtureB.InitializeAsync();
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try
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{
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using var clientA = new OpcUaTestClient();
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await clientA.ConnectAsync(fixtureA.EndpointUrl);
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var modeA = (int)clientA.Read(VariableIds.Server_ServerRedundancy_RedundancySupport).Value;
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using var clientB = new OpcUaTestClient();
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await clientB.ConnectAsync(fixtureB.EndpointUrl);
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var modeB = (int)clientB.Read(VariableIds.Server_ServerRedundancy_RedundancySupport).Value;
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modeA.ShouldBe((int)RedundancySupport.Warm);
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modeB.ShouldBe((int)RedundancySupport.Warm);
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}
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finally
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{
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await fixtureB.DisposeAsync();
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await fixtureA.DisposeAsync();
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}
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}
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}
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}
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