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Marc Schier
4d613d11dc
# Description End-to-end migration of the Azure DevOps CI pipelines to the `netstandard` Managed DevOps Pool with the build matrix re-shaped to fit the new agents and a handful of test/project fixes that fell out of the migration. **Pipeline routing & defaults** - `azure-pipelines.yml` and `azure-pipelines-preview.yml` default `managedPool=true`, routing Windows/Linux jobs to the `netstandard` Managed DevOps Pool with `ImageOverride` demands; flipping the queue-time boolean to `false` falls back to Microsoft-hosted agents. - Per-platform images come from the root yml (single source of truth): - Managed pool: `windows-2022-g2` / `ubuntu-22.04-g2` (Mac stays hosted: `macOS-15`). - Hosted: `windows-2025-vs2026` / `ubuntu-24.04` / `macOS-15`. - `.azurepipelines/test.yml` and `test-aot.yml` declare `hosted` as a typed `boolean` parameter so `not(parameters.hosted)` actually evaluates correctly (an untyped value left it as the string `'false'`, which is truthy and silently routed managed-pool jobs to Microsoft-hosted `vmImage` demands). - macOS test jobs always run on the Microsoft-hosted `macOS-15` image regardless of `managedPool`; the four per-framework test stages queue a dedicated `hosted: true` Mac invocation unconditionally and the main matrix carries only Windows+Linux. - Test-template prep jobs (which only run a PowerShell matrix script) run on the managed pool whenever a `poolName` is set, even when the matrix `hosted: true`, so the Microsoft-hosted parallel-job allotment isn't blocked. **Build stage — per-(TFM × configuration) matrix** - `.azurepipelines/get-matrix.ps1` gained a `-Tfms` parameter that fans the matrix across target frameworks alongside the existing agent / configuration dimensions and emits a per-entry `targetTfm`. - `.azurepipelines/sln.yml` accepts a `tfms` parameter and threads `$(targetTfm)` into both `dotnet restore` and `dotnet build` as `/p:CustomTestTarget=$(targetTfm)` so each matrix job builds a single TFM and fits on the Managed DevOps Pool's small (~16 GB) temp disk. - `azure-pipelines.yml` `build` stage passes `tfms: 'net10.0,net48'` for PR builds and the full `net472,net48,netstandard2.0,netstandard2.1,net8.0,net9.0,net10.0` set for master / scheduled / manual / fork-PR runs. - `sln.yml`'s restore step uses `command: custom` (`custom: restore`) because `command: restore` silently drops the `arguments` input — without it `/p:CustomTestTarget` never reached restore and `obj/project.assets.json` was populated with the wrong TFM set. - `sln.yml` no longer uses the `MSBuild@1` task; it now uses `DotNetCoreCLI@2` with `dotnet build` so the .NET 10 SDK's bundled MSBuild (which understands `.slnx`) is used instead of Visual Studio 2022's MSBuild on the managed-pool image. **Project-level fixes that fell out of the matrix split** - `Applications/McpServer`, `Applications/MinimalBoilerServer`, `Applications/MinimalCalcServer`, and `Tests/Opc.Ua.Aot.Tests` each get a `Directory.Build.targets` that turns the project into a no-op (cleared `Compile` / `ProjectReference` / `PackageReference` / etc., `OutputType=Library`) when `CustomTestTarget` restricts the matrix to a legacy TFM (`net4*` / `netstandard2.*`) the project can't target. Target overrides are deliberately avoided — same-named targets in `Directory.Build.targets` ALWAYS replace the SDK definitions, which would silently break `dotnet publish` / `dotnet test` in the unrestricted GitHub Actions flows. - `Tools/Opc.Ua.MigrationAnalyzer.csproj`'s `ProjectReference` to `Opc.Ua.MigrationAnalyzer.Core` no longer hard-pins `SetTargetFramework=net10.0`; the pin follows `CustomTestTarget` (and falls back to `net10.0` when unset). **Test reliability** - `Tests/Opc.Ua.PubSub.Tests/IntervalRunnerTests.FakeTimeProviderDrivesDeterministicSchedulingAsync` no longer calls a single `fake.Advance(300)` expecting three timers to fire — it advances one 100 ms interval at a time and waits for each fire (the runner only registers the next `Delay` after the previous callback resumes on the thread pool; on slower CI agents the race surfaces consistently). - `Tests/Opc.Ua.Server.Tests/Fluent/SimulationBuilderExtensionsTests` (four "expect ≥ N ticks in 150 ms" tests) replace fixed `Task.Delay`/`Thread.Sleep` waits with a `WaitForAsync` polling helper, eliminating thread-pool cold-start flakiness on slow agents (observed on the hosted `macOS-15` runner). ## Related Issues _No tracking issue — pipeline tuning to standardize on the netstandard Managed DevOps Pool, plus the test/project follow-ups required for the matrix to be green on that pool._ ## Checklist - [ ] I have signed the [CLA](https://opcfoundation.org/license/cla/ContributorLicenseAgreementv1.0.pdf) and read the [CONTRIBUTING](https://github.com/OPCFoundation/UA-.NETStandard/blob/master/CONTRIBUTING.md) doc. - [x] I have added tests that prove my fix is effective or that my feature works and increased code coverage. _(N/A — pipeline + test-reliability fixes; the two test fixes themselves were verified to pass 5× in stress runs locally.)_ - [x] I have added all necessary documentation. _(Comments inline in the new `Directory.Build.targets`, `sln.yml`, and `azure-pipelines.yml` explain the unusual MSBuild/`DotNetCoreCLI@2` interactions for future maintainers.)_ - [x] I have verified that my changes do not introduce (new) build or analyzer warnings. - [x] I ran **all** tests locally using the **UA.slnx** solution against at least .net **framework** and .net **10**, and all passed. _(Verified `dotnet build UA.slnx -p:CustomTestTarget=net10.0 -c Release` and `-p:CustomTestTarget=net48 -c Debug` both complete with 0 errors; targeted test runs for the two modified test files pass 5/5.)_ - [ ] I fixed **all** failing and flaky tests in the CI pipelines and **all** CodeQL warnings. - [ ] I have addressed **all** PR feedback received.