This PR implements the **OPC UA Device Integration (DI, OPC 10000-100)**
companion-spec library trio (`Opc.Ua.Di` / `Opc.Ua.Di.Server` /
`Opc.Ua.Di.Client`) plus a worked example
(`Applications/MinimalPumpServer`) demonstrating the OPC 40223 Pumps
companion specification end-to-end with full simulation. It also closes
11 fluent-API gaps in `Opc.Ua.Server.Fluent`, three source-generator
bugs, integrates the DI layer into the unified `services.AddOpcUa()`
Microsoft.Extensions DI hosting pattern, and adds 250+ new tests.
**Worked example — `Applications/MinimalPumpServer/`**
- AOT-compatible console host using `Host.CreateApplicationBuilder` +
`AddOpcUa()`.
- `PumpNodeManager` inherits from `DiNodeManager`; multi-namespace (DI +
Machinery + Pumps) via runtime NodeSet2 loading and
`ModelLoaderBuilder`.
- Demonstrates declarative second-pump creation via
`.ConfigureDevicesFor<PumpNodeManager>(...)` and software-package
seeding from the same configurator.
- Full simulation: pressure, temperatures, power, flow, efficiency,
level, cavitation/overheat fault injection, alarm setup, NAMUR-style
supervision.
**Documentation**
- `Docs/Opc.Ua.Di/` — README, DeviceBuilder, Hosting, LockService,
SoftwareUpdate, ClientHelpers (6 new developer guides).
- `Docs/Opc.Ua.Di/ComplianceMatrix.md` — every DI declaration mapped to
In-v1 / Generated / Deferred / Excluded.
- `Docs/CompanionSpecLibraries.md` — packaging guide for new
companion-spec libraries.
- `Docs/FluentApiGaps.md` — historical record of G1–G11.
- `Docs/SourceGeneratedNodeManagers.md` updated for richer node
managers.
- `Docs/plans/StateMachineBuilder.md` — deferred state-machine builder
design.
* New certificate and secrete abstraction with certificate infrastructure and certificate/secret stores.
* leak testing for certificate resources to validate new ref counting in every test assembly
* Migration guide updated and documentation added for all
* Remove IDisposable from Nodestate and UserIdentity.
* UserCertificateTokenHandler now just points into certificate registry/stores, no dispose required
* Fix CA2000 warnings and cleanup of other diagnostics, increase warning levels in .editorconfig
* Add source-generated NodeManagers and fluent wiring API
Adds a fluent INodeManagerBuilder API for wiring per-node callbacks and a model-aware source generator that emits a partial CustomNodeManager2 plus an INodeManagerFactory for each design file.
Opt-in is per class via [Opc.Ua.Server.Fluent.NodeManager] on a partial class (recommended) or project-wide via the ModelSourceGeneratorGenerateNodeManager MSBuild property (legacy). The attribute supports NamespaceUri / Design selectors for multi-design projects and a GenerateFactory toggle. Diagnostics MODELGEN010 / MODELGEN011 surface unmatched bindings and non-partial classes.
Adds the ConsoleBoilerServer NativeAOT sample driving the new pipeline end-to-end with Microsoft.Extensions.Logging.Console and updated docs in Docs/SourceGeneratedNodeManagers.md.
* Add BoilerServer AOT smoke test
Verifies the source-generated Boiler.BoilerNodeManagerFactory loads
the boiler address space, registers its namespace, and dispatches the
fluent OnRead callbacks wired in BoilerNodeManager.Configure.cs.
All 3 new tests pass in JIT mode and against the NativeAOT-published
binary; total Aot.Tests suite: 71/71 pass.
Split validator load/validate; split DesignFileCollection Targets/Dependencies
ModelDesignValidator.LoadNodes now skips ValidateDictionary when a model is loaded purely as a dependency. The flag is plumbed through LoadModelDesign and LoadDesignFile; the dep loop in ValidateModel passes false, the primary target passes true. This lets callers supply unrelated or reverse dependencies (deps that import the target) without triggering premature validation failures.
DesignFileCollection exposes Targets + Dependencies; generators and tests updated. MergeNamespace preserves FilePath across PublicationDate-based replacement so later loads can still find the source file. Tester simplified to treat every other xml/csv pair as a dependency of each target.
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
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Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
Generate stack and application code using source generators
Change built in types to readonly structs
Update localized text implementation to use JSON text serializer
Status code with symbolic names
Immutable node ids
No boxing for all built in types <= 8 bytes in Variant.
Split user identity token and token handling via token handler
Add migration guide for breaking changes
Marc Schier