chore: organize solution into module folders (Core/Server/Drivers/Client/Tooling)
Group all 69 projects into category subfolders under src/ and tests/ so the Rider Solution Explorer mirrors the module structure. Folders: Core, Server, Drivers (with a nested Driver CLIs subfolder), Client, Tooling. - Move every project folder on disk with git mv (history preserved as renames). - Recompute relative paths in 57 .csproj files: cross-category ProjectReferences, the lib/ HintPath+None refs in Driver.Historian.Wonderware, and the external mxaccessgw refs in Driver.Galaxy and its test project. - Rebuild ZB.MOM.WW.OtOpcUa.slnx with nested solution folders. - Re-prefix project paths in functional scripts (e2e, compliance, smoke SQL, integration, install). Build green (0 errors); unit tests pass. Docs left for a separate pass. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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using Shouldly;
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using Xunit;
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using ZB.MOM.WW.OtOpcUa.Configuration.LocalCache;
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namespace ZB.MOM.WW.OtOpcUa.Configuration.Tests;
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[Trait("Category", "Unit")]
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public sealed class GenerationSealedCacheTests : IDisposable
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{
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private readonly string _root = Path.Combine(Path.GetTempPath(), $"otopcua-sealed-{Guid.NewGuid():N}");
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public void Dispose()
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{
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try
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{
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if (!Directory.Exists(_root)) return;
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// Remove ReadOnly attribute first so Directory.Delete can clean sealed files.
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foreach (var f in Directory.EnumerateFiles(_root, "*", SearchOption.AllDirectories))
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File.SetAttributes(f, FileAttributes.Normal);
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Directory.Delete(_root, recursive: true);
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}
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catch { /* best-effort cleanup */ }
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}
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private GenerationSnapshot MakeSnapshot(string clusterId, long generationId, string payload = "{\"sample\":true}") =>
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new()
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{
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ClusterId = clusterId,
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GenerationId = generationId,
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CachedAt = DateTime.UtcNow,
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PayloadJson = payload,
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};
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[Fact]
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public async Task FirstBoot_NoSnapshot_ReadThrows()
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{
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var cache = new GenerationSealedCache(_root);
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await Should.ThrowAsync<GenerationCacheUnavailableException>(
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() => cache.ReadCurrentAsync("cluster-a"));
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}
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[Fact]
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public async Task SealThenRead_RoundTrips()
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{
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var cache = new GenerationSealedCache(_root);
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var snapshot = MakeSnapshot("cluster-a", 42, "{\"hello\":\"world\"}");
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await cache.SealAsync(snapshot);
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var read = await cache.ReadCurrentAsync("cluster-a");
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read.GenerationId.ShouldBe(42);
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read.ClusterId.ShouldBe("cluster-a");
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read.PayloadJson.ShouldBe("{\"hello\":\"world\"}");
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}
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[Fact]
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public async Task SealedFile_IsReadOnly_OnDisk()
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{
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var cache = new GenerationSealedCache(_root);
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await cache.SealAsync(MakeSnapshot("cluster-a", 5));
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var sealedPath = Path.Combine(_root, "cluster-a", "5.db");
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File.Exists(sealedPath).ShouldBeTrue();
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var attrs = File.GetAttributes(sealedPath);
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attrs.HasFlag(FileAttributes.ReadOnly).ShouldBeTrue("sealed file must be read-only");
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}
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[Fact]
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public async Task SealingTwoGenerations_PointerAdvances_ToLatest()
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{
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var cache = new GenerationSealedCache(_root);
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await cache.SealAsync(MakeSnapshot("cluster-a", 1));
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await cache.SealAsync(MakeSnapshot("cluster-a", 2));
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cache.TryGetCurrentGenerationId("cluster-a").ShouldBe(2);
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var read = await cache.ReadCurrentAsync("cluster-a");
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read.GenerationId.ShouldBe(2);
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}
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[Fact]
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public async Task PriorGenerationFile_Survives_AfterNewSeal()
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{
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var cache = new GenerationSealedCache(_root);
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await cache.SealAsync(MakeSnapshot("cluster-a", 1));
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await cache.SealAsync(MakeSnapshot("cluster-a", 2));
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File.Exists(Path.Combine(_root, "cluster-a", "1.db")).ShouldBeTrue(
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"prior generations preserved for audit; pruning is separate");
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File.Exists(Path.Combine(_root, "cluster-a", "2.db")).ShouldBeTrue();
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}
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[Fact]
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public async Task CorruptSealedFile_ReadFailsClosed()
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{
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var cache = new GenerationSealedCache(_root);
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await cache.SealAsync(MakeSnapshot("cluster-a", 7));
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// Corrupt the sealed file: clear read-only, truncate, leave pointer intact.
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var sealedPath = Path.Combine(_root, "cluster-a", "7.db");
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File.SetAttributes(sealedPath, FileAttributes.Normal);
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File.WriteAllBytes(sealedPath, [0x00, 0x01, 0x02]);
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await Should.ThrowAsync<GenerationCacheUnavailableException>(
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() => cache.ReadCurrentAsync("cluster-a"));
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}
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[Fact]
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public async Task MissingSealedFile_ReadFailsClosed()
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{
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var cache = new GenerationSealedCache(_root);
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await cache.SealAsync(MakeSnapshot("cluster-a", 3));
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// Delete the sealed file but leave the pointer — corruption scenario.
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var sealedPath = Path.Combine(_root, "cluster-a", "3.db");
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File.SetAttributes(sealedPath, FileAttributes.Normal);
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File.Delete(sealedPath);
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await Should.ThrowAsync<GenerationCacheUnavailableException>(
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() => cache.ReadCurrentAsync("cluster-a"));
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}
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[Fact]
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public async Task CorruptPointerFile_ReadFailsClosed()
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{
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var cache = new GenerationSealedCache(_root);
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await cache.SealAsync(MakeSnapshot("cluster-a", 9));
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var pointerPath = Path.Combine(_root, "cluster-a", "CURRENT");
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File.WriteAllText(pointerPath, "not-a-number");
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await Should.ThrowAsync<GenerationCacheUnavailableException>(
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() => cache.ReadCurrentAsync("cluster-a"));
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}
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[Fact]
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public async Task SealSameGenerationTwice_IsIdempotent()
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{
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var cache = new GenerationSealedCache(_root);
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await cache.SealAsync(MakeSnapshot("cluster-a", 11));
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await cache.SealAsync(MakeSnapshot("cluster-a", 11, "{\"v\":2}"));
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var read = await cache.ReadCurrentAsync("cluster-a");
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read.PayloadJson.ShouldBe("{\"sample\":true}", "sealed file is immutable; second seal no-ops");
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}
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[Fact]
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public async Task IndependentClusters_DoNotInterfere()
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{
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var cache = new GenerationSealedCache(_root);
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await cache.SealAsync(MakeSnapshot("cluster-a", 1));
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await cache.SealAsync(MakeSnapshot("cluster-b", 10));
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(await cache.ReadCurrentAsync("cluster-a")).GenerationId.ShouldBe(1);
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(await cache.ReadCurrentAsync("cluster-b")).GenerationId.ShouldBe(10);
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}
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}
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