Commit Graph

11 Commits

Author SHA1 Message Date
romanett 9b034f8291 Enable nullable reference types centrally; migrate all unset and annotations-only projects (#4700)
# Description

Nullable reference types are now enabled once, in `common.props`, and
every project in the repository builds warning-clean with them.

**Configuration**
- `<Nullable>enable</Nullable>` lives in `common.props`. All per-project
`<Nullable>` settings are removed: 178 project files (enable,
annotations, and the `disable` in the three Aot test projects).
- 419 per-file `#nullable enable`/`restore` directives and the 4
`#nullable disable` directives are removed.
- Kept on purpose:
- The 5 `<auto-generated>` schema files (`UANodeSet.cs`, `UA Type
Dictionary.cs`, `OPCBinarySchema.cs`, `SecuredApplication.cs`,
`PInvokeHelper.cs`) keep `#nullable enable`. The compiler ignores the
project setting in generated code, so the directive is required there.
- `tests/Opc.Ua.Interop.LegacyPeer` keeps `disable`. It builds against
the 1.5.378 packages and does not import the repository props.
- `docs/DeveloperGuide.md` and `.github/copilot-instructions.md` now
describe the central setting.

**Migration** (the 43 unset and 13 annotations-only projects, roughly
10k diagnostics)
- **Production code: annotated at the declarations.** Covers
`tools/Opc.Ua.SourceGeneration.Core`, `src/Opc.Ua.Lds.Server` and the
LDS sample.
- Members, parameters and returns are nullable where null actually
flows.
- Null-check helpers carry `[NotNullWhen]` (`IsNull`, `IsValidXmlName`,
`IsMethodTypeDesign`).
- `CoreUtils.Format`, `Utils.Format`, `ITemplateWriter.WriteLine` take
`params object?[]`. `Template.AddReplacement` takes `string?` (rendering
already skips null replacements).
- `IRegisteredServerStore.RegisterAsync` returns
`Task<RegistrationEntry?>`: it returns null when a registration is
removed.
- Dereferences backed by an invariant (for example, the validated model)
use `!`, so runtime behaviour is unchanged.
- **Behavioural changes in production code** (small, deliberate):
- `NodeSetToModelDesign` throws `InvalidOperationException` when the
file is not a NodeSet. Before, it threw a NullReferenceException on the
next line.
- `ModelDesignValidator` starts its lookup tables empty instead of null.
A redundant `if (m_nodes == null) return;` guard is gone.
- **Test code: minimal annotations.**
  - `?` on values that can be null, `!` where the test asserts non-null.
  - `= null!` for fixture members assigned in SetUp.
- `TryGetStructure<T>(out T? x)` where the inferred `T?` broke the
`IEncodeable` constraint.
- A few redundant `== null` checks on structs (`NodeId`, `ArrayOf<T>`)
folded into the adjacent `IsNull`/`Count` checks.

**Notes for reviewers**
- The diff is large (~1,500 files) but almost entirely mechanical: `?`,
`!` and directive removal. The non-annotation changes are listed above.
- Known follow-up, not done here:
`IModelDesign.Namespaces/TargetNamespace/NamespaceUris` stay
non-nullable even though the validator returns null before it loads a
dictionary. Making them nullable would ripple through every generator
call site.

## Related Issues

- Fixes #4439

## 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.
- [ ] I have added tests that prove my fix is effective or that my
feature works and increased code coverage.
- [x] I have added all necessary documentation.
- [x] I have verified that my changes do not introduce (new) build or
analyzer warnings.
- [ ] I ran **all** tests locally using the **UA.slnx** solution against
at least .net **framework** and .net **10**, and all passed.
- [ ] I fixed **all** failing and flaky tests in the CI pipelines and
**all** CodeQL warnings.
- [ ] I have addressed **all** PR feedback received.

The "no new warnings" box covers net10.0 and net48: full non-incremental
builds of `UA.slnx`, `tools/SourceGeneration.slnx`,
`tools/MigrationAnalyzer.slnx` and the Aot test projects finished with 0
warnings and 0 errors under the repository's warnings-as-errors
settings. net9.0 and net8.0 also had no nullable diagnostics, but they
were not rebuilt after the final fixes. Tests have not been run locally
yet.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

---------

Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>
2026-10-08 08:48:13 +02:00
romanett 442889cba5 Fix source generator audit findings; conform structure-field matrices and type metadata to OPC UA 1.05 (#4569)
# Description

This PR fixes a bug audit of the source generation projects
(`tools/Opc.Ua.SourceGeneration*`: model loading, NodeSet import, all
emitters, the Roslyn hosts and packaging). It also fixes a max-effort
code review of those fixes, and a check of every spec-relevant change
against the OPC UA 1.05 text.

- **Scope:** about 85 audit findings, 48 review findings and 32
spec-grounding items were addressed. Each fix has a regression test that
fails without it.
- **Wire change:** it includes one deliberate, stack-wide wire change:
**structure-field matrices now follow OPC 10000-6 5.2.5 Table 28**.

Most changes are internal correctness fixes. The sections below list
every change a user can observe: wire formats, generated code and API,
generated address-space content, diagnostics and runtime behaviour.

## Behaviour / user-facing changes

### Wire format (encoders)
- **Binary inline matrices** (OPC 10000-6 5.2.5 Table 28).
- **Layout:** a multi-dimensional *structure field* is encoded as
`Int32[] Dimensions`, then the values **without a length prefix**, with
at least 2 dimensions.
- **Empty and null:** any dimension <= 0 means no values follow, and a
null matrix is `-1`. An empty matrix is written as `[0,0]`.
- **Compatibility:** this is **not compatible with earlier builds of
this SDK** for matrix fields. It applies to generated types,
`[DataType]` types, `Structure`, client ComplexTypes and
`WriteEncodeableMatrix`.
  - **Unchanged:** Variant matrices (5.2.2.16) keep their old encoding.
- **Declared rank decides matrix vs array.** A 1-D `MatrixOf<T>` in an
array field or a Variable value is written as an array again.
Matrix-declared fields go through the new public
`EncoderExtensions.WriteInlineMatrixValue`, which generated code also
uses. A non-empty 1-D value in a matrix field throws `BadEncodingError`.
- **Decoder hardening:**
- Before allocating, the decoder bounds all matrix dimensions against
overflow, `MaxArrayLength` and the remaining message length.
  - The decoder rejects:
    - a matrix with fewer than 2 dimensions;
- a populated matrix whose rank differs from the field's declared rank;
    - a union SwitchField greater than the number of fields;
    - an EncodingMask with unassigned bits set.
- **Encoder `MaxArrayLength`:** the encoder enforces `MaxArrayLength`
for inline matrices, as it already did for arrays.
- **XML structure fields** (5.3.1, 5.3.4, 5.3.5).
- **Fields:** `Structure` and client ComplexTypes write fields like
typed fields (`<A>1</A>`, array elements directly) instead of a Variant
body.
- **Matrix fields:** `Dimensions` and `Elements` go directly inside the
field element, with no `<Matrix>` wrapper.
- **Empty matrices:** written as nil, because XML dimensions must be
greater than 0.
  - **Compatibility:** decoders still accept the old shapes.
- **Enum fixes:** enum array elements with value 0 are no longer
dropped, and enum array element names are fixed.
- **Other encoding fixes:**
- A null `DiagnosticInfo` structure field writes `0x00` instead of
nothing.
- A null scalar field in a runtime `Structure` is written as its default
instead of zero bytes, which used to shift every following field.
- A Variant holding an empty matrix encodes as an empty array instead of
throwing.
  - `Variant.Copy` keeps the matrix identity of null and empty matrices.
- **NodeSet export and the DataContract surrogate** write Variable
values with the Variant rules again. A null or empty `MatrixOf` variable
no longer produces invalid XML or unreadable NodeSets.
- **`JsonEncoder.CanOmitFields`** is `true` only for Compact encoding.
Verbose and RawData JSON include default-valued fields.

### `[DataType]` source-generated types
- **Default-value handling** (OPC 10000-6 5.4.1, Table 1).
- **Encode:** a field is omitted only when its value *and* its declared
default are the type's default (0, false, null). Fields with a
non-default initializer or constructor default, and empty strings, are
always written, so configuration files get slightly larger.
- **JSON decode:** a field missing from JSON decodes to the type
default.
- **XML decode:** a field missing from XML keeps its declared default,
which older configuration files rely on.
- **Why:** this fixes silent round-trip loss, for example
`SamplingInterval = 0` read back as `-1`.
- **Nested `[DataType]` types:** they are now generated inside their
containing types. Without an explicit id, their default TypeId and
XmlName are qualified (e.g. `s=Outer.Foo`); **wire identity change** for
nested types. Colliding activator names get a `_2` suffix.
- **Activators:** they are `internal` when the type, or any containing
type, is not public (was CS0060).
- **Matrix properties:**
  - `MatrixOf<T>` properties use the inline matrix encoding.
- Matrices of non-sealed structures, or with
`StructureHandling.ExtensionObject`, are written as ExtensionObjects.
- Their published ValueRank is 2, because the rank can't be known from
`MatrixOf<T>`.
- **Published StructureDefinitions:**
  - They include base-class fields.
  - Nullable properties are no longer marked optional.
  - Inline structure fields name their concrete type.
- **`[Flags]` enums:** they are published as plain enumerations with
their member values, which matches how they are encoded.
- **Other generated code:**
- `Clone` deep-copies arrays and matrices of structures, Variants,
ExtensionObjects and DataValues.
- `IsEqual` and `GetHashCode` are consistent: EncodingMask, active union
member and NaN handling agree.
- Pooled `Reuse()` restores the freshly constructed state through the
new `protected virtual ResetForReuse()`, and returns an instance to its
runtime type's pool.
- **Enum capture:** enum member values are captured culture-invariantly.
Negative values were lost on cultures that use U+2212 as the minus sign.

### Model-driven generator: generated code, API and file names
- **Removed API:** generated `*_Placeholder` proxy accessors (e.g.
`PowerTrainTypeClient.GetMotorIdentifier_PlaceholderAsync`) and fluent
`X_Placeholder()` accessors are removed; they could never resolve
anything.
- Proxy accessors now look children up by BrowseName with the right
namespace.
- `RoboticsClient` finds motors and gears by type and drives via
`IsDrivenBy`. Its topology snapshots used to be empty.
- **Renamed files:** generated files for a bound `[NodeManager]` are now
named `{Namespace}.{Class}.NodeManager.g.cs` (also `.Factory` and
`.FluentBuilders`).
- **Generated NodeState code:**
- Attributes are set through `baseState`/`nodeState` locals, so children
named like base attributes (e.g. `DataType`, `EventNotifier`) compile.
- Children that hide base members are declared `public new`, using names
reflected from the runtime.
  - `global::` qualification is used throughout.
- **Proxies and fluent builders:** a proxy whose supertype is excluded
(e.g. Draft) derives from the nearest emitted ancestor. Fluent wrappers
and NodeState factories fall back the same way; they used to fail with
CS0246.
- **Derived structures:**
  - The optional-field `EncodingMask` continues across inheritance.
- A derived structure over a base type from another model no longer
relies on `base.ResetForReuse`.
- **Default values:**
- NodeId, QualifiedName and ExpandedNodeId defaults resolve by namespace
URI (`context.NamespaceUris.GetIndexOrAppend`) and server URI.
- StatusCode, negative enum, `double`/`float` (shortest round-trip
literal) and escaped string defaults now compile.
- **Event records:**
- Vendor event records have `Decoder.GetStandardFields(NamespaceTable)`,
and their browse paths use the model's namespace.
- A field whose namespace is unknown to the session no longer matches a
namespace-0 field.
  - Companion `StandardFields` is `[Obsolete]`.
- Vendor simple subtypes such as `Percent : Double` map to their
built-in type.
- **Other fixes:**
- `MethodState.CallAsync` passes the real `objectId` to synchronous
`OnCallMethod2` handlers; it used to pass `NodeId.Null`.
- Enumeration fields with an explicit `Identifier` keep it, instead of
taking a trailing `_<digits>`.
  - Explicit NumericIds are no longer reused by automatic numbering.
  - Dependencies are loaded in topological order.

### Generated address-space content
- **Arguments:**
- Methods without arguments no longer get empty
`InputArguments`/`OutputArguments` properties (OPC 10000-3 5.7).
- About 2,660 automatically assigned namespace-0 NodeIds of 15000 and
above shift. Every NodeId in `StandardTypes.csv` is unchanged.
- **Permissions:** type nodes and method declarations on types now carry
the model's `RolePermissions`/`AccessRestrictions`.
- **Restored nodes:** NodeSet import keeps nodes that were silently
dropped before:
- `NamespaceMetadata` objects and the NodeSet's own TypeDictionary
variables;
  - ISA95 placeholders linked only non-hierarchically;
  - instances whose parent is in another namespace.
- **Import details:**
  - ValueRank > 1 without ArrayDimensions keeps its rank.
  - `svr=` indexes map correctly.
  - Invalid MinimumSamplingInterval values import as -1, not 0.
  - Localized texts prefer the invariant or English translation.
- **StructureDefinitions:**
- They include inherited fields, including for subtypes without their
own fields (e.g. `AnonymousIdentityToken` now publishes PolicyId).
  - The StructureType kind covers inherited AllowSubTypes fields.
  - Unions ignore IsOptional.
- StructureFields never publish ValueRank 0; a OneOrMoreDimensions field
without dimensions becomes rank 2.
- Fields with ValueRank -2/-3 are published as scalar BaseDataType,
which is what is on the wire.
- **OptionSets:**
  - Implicit fields get the next free bit.
- `OptionSetValues` uses null for undefined bits instead of "Reserved",
and structure OptionSets publish all their bits (no 32/96-bit cap).
- Numeric OptionSets are limited to their base type's width, and UInt64
bit 63 works.
- **Schemas:**
- Structures with inline-matrix fields are left out of the `.bsd`
(5.2.5).
- In the BSD, Variant-encoded and non-structure subtyped fields are
described as `ua:Variant`.
- In the `.xsd`, matrix fields are typed `ua:Matrix` with
`Dimensions`/`Elements`, and `EncodingMask` is required.

### NodeSet / model input handling
- **Model selection:**
- The newest NodeSet of a model is chosen by `ModelVersion` (SemVer 2.0
precedence), then PublicationDate. The `Version` attribute, which Annex
F says is not for comparison, is only a tie-break.
- The order is total and does not depend on input order; referenced
assemblies use the same rule.
- **Default names:**
- Invalid default Name/Prefix values are repaired (`201301ISA95` becomes
`_201301ISA95`, `class` becomes `class_`).
  - Valid names are unchanged.
  - Sanitising no longer depends on the OS.
- **`ModelUri` metadata** that doesn't match the NodeSet raises a
warning instead of silently losing the model.
- **Input detection:**
- Only XML files whose root is `ModelDesign` or `UANodeSet` are treated
as models.
- A malformed NodeSet stays a NodeSet input, so it no longer breaks the
ModelDesign pass.
- **`IdentifierFile` paths:** they are normalized (`./`, `../`), and the
suffix match requires a folder boundary.
- **Dependency payloads** (`ModelDependencyV1`) carry field IsOptional,
AllowSubTypes, ArrayDimensions and the producer's namespace tables in
skippable trailers, so old and new readers stay compatible.

### Roslyn host, diagnostics, packaging
- **New diagnostics:**
- MODELGEN036: `[NodeManager]` target not supported (nested, generic,
file-local or global namespace).
- MODELGEN037: `[DataType]` target not supported (struct, generic,
abstract, file-local or global namespace).
- MODELGEN038: the definition of an encodeable base type can't be found.
- **New validator errors:**
- a structure with both optional and subtyped fields (OPC 10000-6 F.13);
  - multi-bit or duplicate OptionSet masks.
- **Diagnostic locations:** `[DataType]`/`[NodeManager]` diagnostics
point at real source locations again, so `#pragma` and `.editorconfig`
apply. MODELGEN010 is the exception.
- **Incremental caching:** pipeline values compare by value, so
unrelated edits no longer regenerate the whole model or all
`[DataType]`s.
- **`ModelSourceGeneratorIgnore`** on a ModelDesign input is honoured;
the design still resolves as a dependency.
- **Cancellation:** a cancelled generation run propagates
`OperationCanceledException` instead of reporting a MODELGEN003 error.
- **Stack package:** the `Stack` NuGet package now ships
`build/OPCFoundation.NetStandard.Opc.Ua.SourceGeneration.Stack.props`,
so `StackSourceGeneratorMode` and `StackSourceGeneratorExclude` reach
the compiler.

## Related Issues

- No tracking issue. The audit, review and spec-grounding reports are
available on request. Contains the matrix wire-format change discussed
for D-5 (OPC 10000-6 5.2.5 Table 28).

## 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.
- [x] I have added all necessary documentation.
(`docs/SourceGeneratedDataTypes.md`, `docs/NodeManagers.md`, generator
readme)
- [x] I have verified that my changes do not introduce (new) build or
analyzer warnings. (`UA.slnx` 0 warnings / 0 errors on net48 and
net10.0)
- [ ] I ran **all** tests locally using the **UA.slnx** solution against
at least .net **framework** and .net **10**, and all passed. The
affected suites were run on net10.0: SourceGeneration Core/Roslyn/Stack,
Types, Core.Encoders, Encoders.Fuzz, Client, Client.ComplexTypes,
PubSub, Core, Server, GDS, Configuration, Di, Robotics, ISA95,
Positioning, OpenUsd, XRegistry. net48 was built; its test legs, and the
post-rebase verification, run in CI.
- [ ] I fixed **all** failing and flaky tests in the CI pipelines and
**all** CodeQL warnings.
- [ ] I have addressed **all** PR feedback received.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

---------

Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>
2026-09-29 00:47:40 +02:00
Copilot 02fb72e2d3 Support guid/opaque nodeids in NodeSet import (#4507)
# Description

`NodeSetToModelDesign.ImportNode` only stored Numeric and String NodeId
identifiers. Guid and Opaque identifiers (both valid per OPC 10000-3
5.2.2) fell through to an `Information` log line, so the node was
registered in `NodesByQName`/`NodesById` with no identifier at all and
code generation continued against a node whose identity had been
discarded.

The `ModelDesign` schema has no representation for Guid/Opaque
identifiers (`NodeDesign` exposes only `NumericId`/`StringId`), so the
import now fails loudly instead of emitting output that looks correct.

- **Importer**: the fall-through branches in `ImportNode` are replaced
with an `InvalidDataException` naming the NodeId, browse name and
identifier type. This matches the existing unsupported-input handling in
the file and surfaces through `ModelCompilation` as a generator
diagnostic.
- **Logger removal**: `m_logger` had no remaining use in
`NodeSetToModelDesign` and was removed along with its
`Microsoft.Extensions.Logging` import.
- **Tests**: `ImportUnsupportedNodeIdTypeThrowsInvalidDataException`
covers Guid, empty Guid and Opaque identifiers via an in-memory NodeSet.
- **Docs**: the source generator readme states the NodeSet2 identifier
restriction.

```csharp
else
{
    // The model design can only carry numeric and string identifiers.
    // Guid and Opaque identifiers (OPC 10000-3 5.2.2) would be dropped
    // and code would be generated for a node without any identity, so
    // the import fails instead of silently producing wrong output.
    throw new InvalidDataException(
        $"NodeId ({input.NodeId}) of node '{input.BrowseName}' uses the " +
        $"{nodeId.IdType} identifier type which is not supported by the model " +
        "design. Only Numeric and String identifiers can be imported.");
}
```

Note on behaviour: a null/unspecified NodeId parses as a Numeric
identifier (`i=0`) and is still handled by the numeric branch, so the
removed `IsNull` branch was only ever reachable for an empty Guid or
Opaque identifier, which is now reported as unsupported.

## Related Issues

## Checklist

_Put an `x` in the boxes that apply. You can complete these step by step
after opening the PR._

- [x] 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.
- [x] I have added all necessary documentation.
- [x] I have verified that my changes do not introduce (new) build or
analyzer warnings.
- [ ] I ran **all** tests locally using the **UA.slnx** solution against
at least .net **framework** and .net **10**, and all passed.
- [ ] I fixed **all** failing and flaky tests in the CI pipelines and
**all** CodeQL warnings.
- [ ] I have addressed **all** PR feedback received.

<!-- START COPILOT CODING AGENT SUFFIX -->

- Fixes #4504

---------

Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
Co-authored-by: marcschier <11168470+marcschier@users.noreply.github.com>
Co-authored-by: Marc Schier <marcschier@users.noreply.github.com>
Co-authored-by: Copilot Autofix powered by AI <175728472+Copilot@users.noreply.github.com>
2026-09-21 14:52:55 +02:00
romanett e639932b95 Fix source generator defects from the Client/Types/SourceGeneration audit (#4473)
# Description

Fixes the SourceGeneration findings of a read-only bug audit of
`a05a36055` — sections 15 (host generators, Roslyn side), 16
(SourceGeneration.Core schema / ModelDesign loader) and 17
(SourceGeneration.Core generators). 36 of the 39 findings are fixed;
each has a regression test.

### Generated-code correctness

- **State machine NodeId constants** were emitted as `const uint` even
when the aliased `Objects` constant is a `string`, so every model using
string NodeIds with a `FiniteStateMachineType` subtype failed with
CS0029. The constant type now follows the aliased node, looked up from
the same source `NodeIdGenerator` emits from — top-level nodes **plus
each node's instance hierarchy**, since a state or transition only ever
exists as a hierarchy entry.
- `NodeIdGenerator` emitted string identifiers into C# string literals
without escaping them.
- Structure field names are authored data, so they can be C# keywords or
collide with the members every generated data type carries. Properties
and `{Type}Fields` members now go through a sanitizing,
collision-breaking mapping (including two siblings that sanitize to the
same identifier). **Wire names are untouched** — OPC 10000-3 §8.51
requires the StructureField name to match the BrowseName, and the
`DataMember`/encode/decode names still come from `Parameter.Name`.
- `NodeStateGenerator`'s copy-on-write cast now uses the fully qualified
data type name, which a cross-model structure needs.
- `GetScalarValueAsCode` emitted `(double)NaN` and the infinities, which
do not compile.
- `TemplateWriter` formatted with the current culture, so a machine with
a comma decimal separator emitted invalid generated source.

### Served schema documents

- The binary schema described a **different wire layout than the
generated `Encode`/`Decode`**: unions carried no
`SwitchField`/`SwitchValue`, and structures with optional fields carried
no encoding-mask presence bits. Both are now emitted per **OPC 10000-6
§5.2.7**, matching the layout the runtime `BsdSchemaGenerator` produces.
A structure with more than 32 optional fields now fails generation
instead of silently wrapping `1 << 32` back onto the first field's bit.
- Documentation text and attribute values are XML-escaped.

### ModelDesign loading and validation

- Identifiers pinned in a CSV were dropped whenever any other loaded
namespace declared the same symbolic name. Removal is now scoped to the
file's target namespace, and explicit `NumericId`s are keyed by
`(namespace, id)` so the same number in two namespaces is legal.
- Declaration order inside a design file no longer matters — base types
are imported and validated ahead of their subtypes.
- OptionSet `OptionSetValues` were truncated at bit 31 (signed shift)
and bits 32–63 of a 64-bit option set were never emitted.
- An authored `ValueRank` is no longer overwritten by the shape of the
default value (OPC 10000-3 §6.2.8: a ValueRank may only be further
restricted), and a VariableType data type may be narrowed any number of
levels deep rather than exactly one.
- NodeSet import: `AccessRestrictions="0"` means "no restrictions", not
`EncryptionRequired` (OPC 10000-3 §8.56) — an unrecognised mask stays
**fail-closed**; a NodeSet without `<Models>` reports what is wrong; an
optional `<References>` no longer throws; the parent/child reference
scan looks at the parent's references; and `IsTypeOf` terminates on the
self-referential root reference types NodeSets routinely declare.
- Version comparison is numeric per component (ordinally `"1.05.9"`
sorts above `"1.05.10"`) and now lives on `SemVer`, so the NodeSet
collection and the dependency tie-break cannot pick different winners; a
publication-date version no longer outranks a real one.

### Host generator

- `[DataType]` on an `enum` is matched again (an enum is not a
`TypeDeclarationSyntax`), MODELGEN003 renders its arguments instead of
the raw template, and the Types hint name keeps the namespace's dots so
`A.BC` and `AB.C` cannot claim the same one.
- Compilation-derived pipeline stages carry value comparers, so editing
a file no longer re-runs the entire model generation on every keystroke.
- A NodeSet that fails to load skips that file rather than every
remaining one; a file listed twice as an `AdditionalFile` is deduped;
superseded NodeSet versions are still recognised as NodeSet inputs and
not generated a second time by the ModelDesign pass.
- `LogLevel.Critical` maps to a diagnostic instead of being silently
dropped.

### Client

- `EventRecordFieldReaders` gained the readers the event record
generator needs (including `Variant`, enumerations and the array forms).
Fields whose type had no reader were declared on the record but never
populated, so they read as `null`/`default` for every event.

## Not fixed (deliberately)

- **Forward same-namespace hierarchical references in
`NodeSetToModelDesign.ImportReferences`** — the audit flags the
inverse-only handling as asymmetric. Making it symmetric compiles and
passes every generator unit test, but regresses the address space: all
17 `RobotOpenUsdE2eTests` fail in `OneTimeSetUpAsync` because the hosted
server never finishes starting. Reverted, with a comment at the site
recording why.
- **§17.10 and §15.10** (both low + PLAUSIBLE) — each needs a wider
refactor than this PR: a consistent NodeId-constant rename across ~6
cross-reference sites, and replacing `Location` with a serializable
equivalent for incremental cache equality.

## Spec cross-check

The encoding/schema changes were checked against the specification: OPC
10000-6 §5.2.7 (32-bit EncodingMask, one bit per optional field in
order, padded), the union `SwitchField` encoding, OPC 10000-3 §8.56
(AccessRestrictionType bit mask), §6.2.8 and §5.6.2/§5.6.5 (ValueRank),
§8.51 (StructureField name == BrowseName).
`GenerateStackTests.OptionalFieldBitsAgreeBetweenBsdAndGeneratedEncoder`
pins the BSD presence-bit order against the generated encoder's
`LogRecordFields` so the two cannot drift apart again.

## Related Issues

_No tracking issue — this PR implements the SourceGeneration sections of
a bug audit. Happy to open one if maintainers prefer._

## 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.
- [x] I have added all necessary documentation.
- [x] I have verified that my changes do not introduce (new) build or
analyzer warnings.
- [ ] I ran **all** tests locally using the **UA.slnx** solution against
at least .net **framework** and .net **10**, and all passed.
- [ ] I fixed **all** failing and flaky tests in the CI pipelines and
**all** CodeQL warnings.
- [ ] I have addressed **all** PR feedback received.

> Note on the test checkbox: verified on **net10.0 only** — `UA.slnx`
builds clean (0 warnings, 0 errors) and
`Opc.Ua.SourceGeneration.Core.Tests` (3915),
`Opc.Ua.SourceGeneration.Tests` (184), `Opc.Ua.Di.Tests` (425, including
the `RobotOpenUsdE2eTests` end-to-end fixture that catches address-space
content changes) and the `EventRecordFieldReaders` tests (16) all pass.
.NET Framework has **not** been run locally; CI needs to confirm it.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

---------

Co-authored-by: Claude Opus 5 <noreply@anthropic.com>
Co-authored-by: Marc Schier <marcschier@users.noreply.github.com>
2026-09-13 19:07:55 +02:00
romanett ececea15c8 Reimplement the GDS ApplicationsNodeManager as a generated fluent node manager (#4434)
# Description

Builds on #4428, which is now merged; this branch is rebased onto
master.

The GDS `ApplicationsNodeManager` becomes a source-generated
`[NodeManager]`: the companion model, its loader and the fluent plumbing
are emitted, and what stays hand-written is the behaviour. Getting there
needed three things from the shared surface, which are the first two
commits.

## Commits

**1. Add the fluent hooks a hand-written manager needs at startup**

- `OnReadRolePermissions` / `OnReadUserRolePermissions` on the node
builder. Every other `NodeState` `On*` hook was already fluent; these
were not, and a server that grants access on something the static model
cannot express has to compute the permission set per request.
- `Node<TState>(TState)` returns a builder over a node the caller
already holds, for nodes materialised after `Configure` resolved its
graph.
- `OnAddressSpaceReadyAsync` on `FluentNodeManagerBase` — the one seam
between the address space existing and the wiring being applied, for
managers whose wiring depends on asynchronous setup. `Configure` is a
`partial void` and cannot await. `DiNodeManager` had already invented
the hook privately, so its declaration becomes an `override`.

**2. Let a `[NodeManager]` bind to a model a referenced assembly
supplies**

A model belongs to the assembly that emits its types, which leaves a
node manager for it homeless whenever that assembly cannot reference
`Opc.Ua.Server` — a model-only package shared with clients, for
instance. Binding was rejected twice over: the design was skipped before
the binding was matched (`MODELGEN010`), and fluent-accessors-only mode
refused to run alongside manager generation (`MODELGEN014`). The binding
is now matched before the skip decision, and a matched binding puts that
design into accessors-only mode. A design nothing binds to is still
skipped, so this cannot start duplicating types by accident.

The emitted manager also gains what a real manager needs:
`DefaultNamespaceUris()` plus a protected constructor taking a
replacement set; `GenerateDefaultConstructor=false` to suppress the
two-argument form; its own logger category; and the call to
`OnAddressSpaceReadyAsync`.

Generated fluent accessors also stop re-enabling nullable warnings — a
bare `#nullable enable` undid the shared header's `disable warnings`, so
any model with a structure-typed method argument reported CS8600 on
every generated `out T` in a project that builds warnings as errors.

**3. Reimplement the GDS `ApplicationsNodeManager` as a generated node
manager**

The design stays owned by `Opc.Ua.Gds.Common`; the server assembly only
binds a manager to it.

**NodeIds do not move.** `NamespaceIndexes[0]` must stay the application
record namespace — it is the one the application database, the
certificate request store and the base allocator mint ids in — so the
constructor passes the namespace order explicitly rather than adopting
the generated model-first default. A test pins both ends against a live
server.

Four overrides go, leaving `OnAddressSpaceReadyAsync` and
`Dispose(bool)` — no address-space overrides at all:

| Removed | Why it was unnecessary |
| --- | --- |
| `New` | The base allocator already mints into `NamespaceIndexes[0]`,
with a thread-safe counter. The override existed only because
`Create(assignNodeIds: true)` asks the factory with the declaration id
still set; `AssignInstanceNodeId` nulls it and re-asks, documented as
being there for exactly this allocator. |
| `AddBehaviourToPredefinedNodeAsync` | Its `AuthorizationServiceType`
branch re-wired a node that was already wired, and its
`KeyCredentialServiceType` branch had nothing to wire — the model ships
that folder empty. |
| `GetManagerHandleAsync`, `ValidateNodeAsync` | Verbatim
reimplementations of the base that also blocked the fluent base's
virtual-node support. |
| `DeleteAddressSpaceAsync` | A `// TBD` passthrough. |

Everything else — all sixteen directory methods with their
self-administration permissions, the certificate groups' concrete types
and trust-list flags, and the authorization service (created through
this PR's `Add` surface and wired in the same place) — is one
`Configure` pass.

**4. Bind the certificate groups from the `Configure` pass**

Acquiring a certificate group and binding it to its nodes are different
kinds of work: the first is I/O (`InitAsync` opens certificate stores
and creates CA certificates), the second only touches the address space.
Each now runs in the phase it belongs to, which puts the whole of the
wiring in one place.

Ownership no longer rides on the binding. A group joins
`m_ownedCertificateGroups` the moment it is constructed, before
`InitAsync` can throw, so a group that fails half way through is still
disposed — which the previous code could not manage, keying ownership
off a dictionary it filled only after initialization succeeded.

> Commit 3's message says this move is impossible and blames `PushTest`.
**That was a wrong diagnosis, and this commit supersedes it.** Two real
defects were hiding behind those failures:

- **`Create(..., NodeId.Null, ..., assignNodeIds: false)` does not null
the NodeId.** `NodeState.Create` overrides it only when handed a
non-null one, so a custom group node kept the namespace-0 id of its type
declaration. `AssignInstanceNodeId` hid this by re-asking the factory
with the id nulled; the builder validates instead, and rejected it. The
node is now created with an id in the manager's own namespace, as the
`Default` authorization service already was.
- **The custom certificate group node was not browseable.** It answered
`GetCertificateGroups` and `ReadNode`, but a type-filtered recursive
browse from the Objects folder never returned it — which OPC 10000-12
§7.8.2 requires of a certificate group. Staging the node through the
builder gives it the reference it was missing.

### Two `PushTest` methods change — please review these closely

The second defect had been masking what those tests actually did.
Selecting the group positionally, `groups[3]` resolved to the server's
**own `ServerConfiguration` group** while the custom one stayed
invisible, so `UpdateTrustListOfCustomGroupAsync` and
`AddRemoveCertOfCustomGroupAsync` were exercising a *transactional*
trust list under a custom-group name.

Browse results, before and after:

| # | Before (baseline) | After |
| --- | --- | --- |
| 0-2 | GDS Directory groups (`ns=3`) | GDS Directory groups (`ns=3`) |
| 3 | **`DefaultApplicationGroup` `i=14156`** — the server's own |
**`MyCustomGroup` `ns=2`** |
| 4 | — | `DefaultApplicationGroup` `i=14156` |

They now resolve the group by browse name — which asserts it is
browseable at all — and expect the immediate-apply semantics the GDS
actually gives the groups of its own `Directory`: `CloseAndUpdate`
writes the stores at once and reports `applyChangesRequired == false`,
so the `ApplyChanges` calls go away (they would return
`Bad_NothingToDo`). The read-back assertions are what prove the writes
landed, and they are unchanged.

This is a genuine loss of the *transactional* trust-list coverage those
two methods were accidentally providing — the server's own group is
still covered by the other `PushTest` methods, which target it
deliberately.

**5. Select `GetCertificates` results by type instead of by position**

`GetCertificatesAsync` checked entry zero of a parallel-array result.
Which entry that is depends on the order the server reports its
certificate types in, an empty result throws `IndexOutOfRange` rather
than failing an assertion, and a second type going missing or
unparseable would not be noticed. Every returned pair is now checked,
and a failure names the certificate type.

**6. Drop the `.Common` suffix from the three GDS projects**

Every other companion specification ships as `<Family>` /
`<Family>.Client` / `<Family>.Server` — Di, ISA95, Positioning,
Robotics, Vision, WotCon, XRegistry. GDS was the exception, with a
`.Common` suffix that named nothing.

| Before | After |
| --- | --- |
| `src/Opc.Ua.Gds.Common` | `src/Opc.Ua.Gds` |
| `src/Opc.Ua.Gds.Client.Common` | `src/Opc.Ua.Gds.Client` |
| `src/Opc.Ua.Gds.Server.Common` | `src/Opc.Ua.Gds.Server` |

**No source changes were needed.** `RootNamespace` was already the final
name in all three projects — the namespaces have always been
`Opc.Ua.Gds`, `Opc.Ua.Gds.Client` and `Opc.Ua.Gds.Server`, and only the
assembly and package ids disagreed. Nothing compiling against these
assemblies changes a `using`.

The package ids do change, which is consumer-visible, so
`docs/migrate/2.0.x/packages.md` gains a renamed-packages section — it
is the document that undertakes to cover NuGet renames — and the
migration skill's package table gains the two rows a 1.5.378 consumer
needs.

Build infrastructure that names the projects or their output moves with
them: both solution files, `expected-packages.txt` (re-sorted — it is
maintained alphabetically), both signing manifests, the reference-server
Dockerfile, the metapackage nuspecs, and the analyzer's package
dependencies. `preview-pack.slnx` is derived from `UA.slnx` and needs no
edit. The migration analyzer's shim tree mirrors the source layout by
its own documented convention, so `Gds.Client.Common/` becomes
`Gds.Client/`.

Prose naming past work is left alone — plan 23 still records that its
deferral happened during the "GDS Client.Common modernization", which is
the name that effort had.

## Validation

`net10.0`, on master + these four commits, from a clean GDS PKI:

- `UA.slnx`: 0 errors, 0 warnings in changed files (the solution's 30
pre-existing warning lines are CA1861/CA1850/CA1307 in `XRegistry`,
`Types.Tests` and `WotCon.Tests` — same rules and projects as the base).
- `Opc.Ua.Gds.Tests`: 1,117 passed, 0 failed, 54 skipped — identical to
the base branch.
- `Opc.Ua.Server.Tests`: 4,961 passed, 0 failed, 5 skipped (measured
before commit 4, which touches only the GDS assembly and its tests).
- `Opc.Ua.SourceGeneration.Tests`: 169 passed.
- `Opc.Ua.SourceGeneration.Core.Tests`, NodeManager/Generators/Fluent:
84 passed; `GenerateCode`: 21 passed, 4 skipped.
- `Opc.Ua.MigrationAnalyzer.Core.Tests`: 10 passed, 3 skipped.
- After the rename: assemblies build as `Opc.Ua.Gds.dll` / `.Client.dll`
/ `.Server.dll`, with no `*.Common.dll` produced anywhere.
- Commits 1-3 build standalone.
- `Opc.Ua.Gds.Server.Common` also builds for `net48` and
`netstandard2.1` (checked before the rebase onto #4428).

Not yet run: the full `Opc.Ua.SourceGeneration.Core.Tests` suite
(~3,800), and the older target frameworks since the rebase.

## Checklist

- [x] Existing tests pass
- [x] New tests cover the new surface (role permissions, resolved-node
builder, referenced-model binding, constructor/namespace control, GDS
namespace invariant, custom-group node namespace)
- [ ] Full Core.Tests sweep and net48/netstandard2.1 re-run after the
rebase

🤖 Generated with [Claude Code](https://claude.com/claude-code)

---------

Co-authored-by: Claude Opus 5 <noreply@anthropic.com>
Co-authored-by: Copilot Autofix powered by AI <175728472+Copilot@users.noreply.github.com>
2026-09-09 10:41:06 +02:00
romanett 30ed2390a8 Import NodeSet2 documents into a fluent node manager (#4432)
## What

`INodeManagerBuilder.Import(UANodeSet, INodeSetImportFactoryProvider?)`
lets a source-generated (or hand-written fluent) node manager overlay a
NodeSet2 document that is only known at runtime onto the model it was
generated from.

Every document imported during one `Configure` pass forms a single batch
that is linked **exactly once** after the pass. A node may therefore
declare a `ParentNodeId` that lives in another document of the batch, or
a node the manager already owns — which is what makes an overlay
possible. Imported nodes resolve through
`Node(...)`/`NodeFromTypeId(...)` immediately, so they can be wired in
the same pass; they are registered with the manager when
`CompleteConfigureAsync` runs.

### Public surface

- **+1 method**: `INodeManagerBuilder.Import(UANodeSet nodeSet,
INodeSetImportFactoryProvider? factoryProvider = null)`.
- **+3 contracts** in `Opc.Ua.Server.Nodes`:
`INodeSetImportFactoryProvider`, `INodeSetImportFactory`,
`NodeSetImportDiscriminator` (TypeDefinition / MethodDeclaration /
NodeId).
- In `Opc.Ua.Export`: a public `UANodeSet.Import` overload taking a
`NodeSetImportStateFactory`, and a public batch
`LinkParentChildRelationships(context, nodes,
NodeSetImportLinkOptions)`. These replace what would otherwise have been
an `InternalsVisibleTo("Opc.Ua.Server")` on `Opc.Ua.Types`.
- `NodeState.IsExplicitlyDefinedChild(context, child)` and `protected
DetachExplicitlyDefinedChild(child)`, used to tell a generated slot
apart from an ordinary child.

### Typed states, no reflection

The generator emits `{Model}NodeSetImportFactoryProvider` — one factory
per model type/declaration, each calling a concrete constructor for an
*empty* state — and makes the generated node manager implement
`INodeSetImportFactoryProvider` by delegating to it. So the builder
resolves the provider from the manager (`NodeManager as
INodeSetImportFactoryProvider`); `Import` also accepts one directly, and
the generated manager exposes `partial void
AddNodeSetImportFactories(List<INodeSetImportFactory>)` for dependency
models. An imported node of a generated type materializes as its
generated `*State` subclass with no type lookup, which keeps the path
NativeAOT-safe.

Because the factories create empty states, an imported instance carries
exactly the children its document declares.

### Reconciliation

When an imported child lands in a slot the generated parent declares
(same BrowseName), it replaces the generated placeholder: the displaced
node and every descendant the document does not carry over are removed
from the manager, and references to them are retargeted at the
replacement. Replacing a node the same `Configure` pass already wired is
rejected with `BadInvalidState` rather than silently dropping the
wiring, and sealing a builder with an unregistered import batch is
rejected too.

### Also

- `RuntimeNodeSetNodeManager` now uses the same importer: its documents
are one batch, so a node may declare a parent in another document of the
group regardless of parse order, and duplicate NodeIds across documents
are detected while parsing.
- Linking resolves an imported child's reference type from its own
inverse reference (previously always `HasComponent`/`HasProperty`).
- Method import keeps the document's `UserExecutable`; it previously
copied `Executable` into it. View import keeps `EventNotifier`.

## Tests

- `NodeSetImporterTests` (15) — discriminator selection, generic
fallbacks, field/value/reference fidelity against a generic import,
cross-document linking, typed replacement of inherited and argument
slots, deferred linking preserving an application `Handle`, duplicate
NodeIds, factory misuse.
- `NodeSetImportBuilderTests` (15) — staging and lookup before
registration, batch linking, attaching to an existing node, provider
resolution, placeholder replacement with reference retargeting,
configured-placeholder rejection, seal/completion guards.
- `NodeSetImportIntegrationTests` (5) — a generated `[NodeManager]`
overlaying its own model on a running server: typed states through the
generated provider, cross-document linking, placeholder replacement, and
browse through a session.
- `NodeManagerGeneratorTests` (+4) — the emitted provider and the
manager's delegation, including that no factory uses
`Activator.CreateInstance`/reflection.
- `NodeSetAotTests` (+1) — the public state-factory import under
NativeAOT.

Full `Opc.Ua.Server.Tests` (4946), `Opc.Ua.SourceGeneration.Core.Tests`
(3821), `Opc.Ua.SourceGeneration.Tests` (165) and `Opc.Ua.Types.Tests`
pass locally on net10.0.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

---------

Co-authored-by: Claude Opus 5 <noreply@anthropic.com>
2026-09-07 23:12:43 +00:00
romanett e61ad4b306 Fully support sub-state machines in the fluent state-machine builder (#4322)
# Description

Part 16 §B.3 places `HasSubStateMachine` on the parent **state** node,
but the fluent builder attached it to the state-machine **root** because
`FluentFiniteStateMachineState` never materialized state nodes at all.
Investigating #3821 showed the gap was wider than the reference
placement:

1. **No state nodes existed.** The NodeId written into `CurrentState/Id`
— `new NodeId(stateId, ElementNamespaceIndex)` — was **dangling**: no
node with that id was in the address space.
2. **`AvailableStates` was never populated**, so
`GetAvailableStatesAsync` returned empty against a fluent-built server.
3. **The whole client discovery chain was therefore dead.**
`ObserveEffectiveStateAsync` enumerates `AvailableStates` and browses
`HasSubStateMachine` from each state node — it found nothing. The client
side was already spec-correct; only the server deviated.
4. **`HasSubStateMachine` is non-hierarchical** (a subtype of
`NonHierarchicalReferences`, `i=32`). Using it as the sub-SM's
`BaseInstanceState.ReferenceTypeId` left the sub-SM unreachable from a
hierarchical browse of the machine.

## What changed

**Element nodes are materialized.** Definition-mode machines now create
one `StateType` node per declared state and one `TransitionType` node
per declared transition — each a `HasComponent` child carrying
`StateNumber` / `TransitionNumber`, with the §B.4 `FromState` /
`ToState` / `HasEffect` references and `HasCause` added by `WithCause`.
`AvailableStates`, `AvailableTransitions` and `LastTransition` are
populated, so `CurrentState/Id` and `LastTransition/Id` resolve to real,
browsable nodes. NodeIds are per-instance, so several machines built
from one definition coexist.

**`HasSubStateMachine` moved to the state node**, with the inverse
`SubStateMachineOf`, and the sub-SM is attached as a `HasComponent`
child (fixing 4).

**Core gains element-id mapping hooks.** `GetCurrentStateId` /
`UpdateStateVariable` / `UpdateTransitionVariable` hard-coded the
numeric form and were non-virtual, so a subclass could not redirect
them. They now route through `public virtual` `GetStateNodeId` /
`GetStateId` / `GetTransitionNodeId` / `GetTransitionId`, whose defaults
reproduce the previous `(elementId, ElementNamespaceIndex)` convention
**exactly** — every stack-shipped and generator-emitted machine is
unaffected, and there is a regression test asserting that.

**Generated machines report their model namespace.** The generator now
emits an `ElementNamespaceUri` override on `FiniteStateMachineType`
subtypes, taken from the nearest type that actually *declares* state
children — a subtype that only adds behaviour inherits its elements, and
their namespace, from its base.

**Ordering and validation fixes.** `WithSubStateMachine` and
`WithInitialState` are now order-independent (previously, attaching a
sub-SM before setting the initial state left the child suspended until
the parent left and re-entered the state — silently).
`WithSubStateMachine` validates `parentStateId`, and the builder rejects
duplicate element browse names, since element NodeIds are now derived
from them.

## A defect this surfaced

Code that assembles nodes with the generated `CreateInstanceOf<Type>`
factories never calls `NodeState.CreateAsPredefinedNode`, so
`OnBeforeCreate` / `OnAfterCreate` are skipped for the entire subtree —
and `OnAfterCreate` is the only place a state machine resolves its
element namespace. It is also where `ConditionState` binds its `Enable`
/ `Disable` / `AddComment` handlers and `AlarmConditionState` binds the
shelving methods, so the impact is broader than state machines.

This PR fixes only the two call sites it depends on — DI's
`SoftwareUpdateFacetWiring` and Robotics' `RoboticsOperationBuilder`.
**The repository-wide audit is deliberately left out of scope and
tracked in #4320** (24 files call these factories; none completed the
lifecycle).

The Robotics regression had no test coverage at all, so an assertion on
`CurrentState/Id` was added and verified to fail without the fix.

## Breaking changes

- Sub-state machines are **no longer browsable from the state-machine
root**. Callers passing a machine's `ObjectId` to
`GetSubStateMachineAsync` must pass a state NodeId instead — from
`GetAvailableStatesAsync` or a snapshot's `CurrentStateId`.
- `CurrentState/Id` for fluent machines changes from the numeric form to
the materialized node's id. Code reading a numeric id out of it should
call `FiniteStateMachineState.GetStateId` rather than parsing the
identifier.
- Generated machines qualify `CurrentState/Id` / `LastTransition/Id`
with their companion-spec namespace instead of the OPC UA one.

Documented in `docs/WhatsNewIn2.0.md` and `docs/StateMachines.md`.

## Notes for reviewers

- Adding `virtual` to the `FiniteStateMachineState` members is a binary
(not source) breaking change — assumed acceptable on the 2.0 line, but
worth confirming against the compatibility policy.
- Address-space cost is one node plus one property per declared state
and transition, per machine instance; called out in the docs for servers
instantiating many machines.
- `AvailableTransitions` is modelled as a `HasComponent`
`BaseDataVariable` (matching the standard NodeSet and what the client's
browse path expects), not a Property.

## Related Issues

- Fixes #3821
- Surfaced #4320 (node create lifecycle audit — not addressed here)

## 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.
- [x] I have added all necessary documentation.
- [x] I have verified that my changes do not introduce (new) build or
analyzer warnings.
- [ ] I ran **all** tests locally using the **UA.slnx** solution against
at least .net **framework** and .net **10**, and all passed.
- [ ] I fixed **all** failing and flaky tests in the CI pipelines and
**all** CodeQL warnings.
- [ ] I have addressed **all** PR feedback received.

### Test runs (net10.0)

| Suite | Result |
|---|---|
| `Opc.Ua.Server.Tests` (full) | 4734 passed, 5 skipped |
| `Opc.Ua.SourceGeneration.Core.Tests` | 3780 passed |
| `Opc.Ua.SourceGeneration.Tests` | 132 passed |
| `Opc.Ua.SourceGeneration.Stack.Tests` | 94 passed |
| `Opc.Ua.Types.Tests` | 8763 passed |
| `Opc.Ua.Robotics.Tests` | 540 passed |
| `Opc.Ua.Robotics.Intent.Tests` | 22 passed |
| `Opc.Ua.Di.Tests` | 424 passed |
| `Opc.Ua.ISA95.Tests` | 136 passed |
| `Opc.Ua.Aas.Tests` | 670 passed |
| `Opc.Ua.Positioning.Tests` | 69 passed |
| `Opc.Ua.Client.Tests` (StateMachines) | 36 passed |

Only net10.0 was run locally; the .NET Framework leg is left to CI,
hence the unchecked box above.

---------

Co-authored-by: Claude Opus 5 <noreply@anthropic.com>
Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
Co-authored-by: marcschier <11168470+marcschier@users.noreply.github.com>
2026-08-29 13:33:16 +00:00
romanett 41db5aca60 Fluent: publish Configure-created nodes' references on foreign-manager nodes (Objects folder placement) (#4331)
# Description

A node created inside the fluent `Configure` hook (source-generated
`[NodeManager]` partial, or the hosting `AddNodeManager(uri, build)`
route) had no way to appear below the Objects folder — or below any node
owned by another node manager.
`AsyncCustomNodeManager.AddReverseReferencesAsync` mirrors inverse
references into the `externalReferences` dictionary **before** the
`Configure` partials run, and the fluent surface never sees the
dictionary, so a configure-created node with an inverse `Organizes`
reference to `ObjectsFolder` existed and simulated but never showed up
under Objects.

This implements the three coordinated pieces proposed in #4329, plus the
companion namespace gap:

**1. Idempotent mirroring pass** (independently worthwhile hardening)
- `AddExternalReference` in `AsyncCustomNodeManager` and
`CustomNodeManager2` now has if-missing semantics (linear scan of the
per-source list).
- `TypeTable.AddEncoding` no longer appends a duplicate encoding id;
re-registering the same encoding is a succeeding no-op.
(`AddRootNotifierAsync` and the node-side `AddReferenceIfMissing` branch
were already idempotent.)

**2. Re-run the pass after `Configure`**
- New protected
`FluentNodeManagerBase.CompleteConfigureAsync(externalReferences, ct)`
wraps `AddReverseReferencesAsync` so hand-written managers using
`CreateFluentBuilder` benefit too.
- The generator-emitted `CreateAddressSpaceAsync` and the hosting
`FluentNodeManager` invoke it once between the `Configure` callbacks and
`Seal()`. Timing is safe: the master distributes `externalReferences`
only after every manager's `CreateAddressSpaceAsync` returns. Side
benefit: inverse `HasNotifier` references on configure-created event
sources get root-notifier registration for free.
- The hosting `FluentNodeManager`'s hand-rolled `externalReferences`
workaround for its root folder is deleted — the root's inverse
`Organizes` reference now flows through the shared pass (mirrored
exactly once, covered by a test).

**3. Discoverable fluent sugar**
- `OrganizedBy(parentId)` / `UnderObjectsFolder()` on `INodeBuilder`
write the inverse `Organizes` reference; with piece 2, placement is just
"write the inverse reference".
- A parentless `CreateInstance<TState>` on `INodeManagerBuilder` takes a
constructor-style factory (`p => new BoilerState(p)`, keeping the
surface reflection-free and AOT-safe), materializes the subtree from the
type model via `NodeState.Create`, rebases all NodeIds through the
manager's `INodeIdFactory`
(`AssignInstanceNodeId`/`AssignInstanceChildNodeIds` — the same pair the
generated factories use, so declaration-id children cannot collide with
the type model), and registers via `AddPredefinedNodeSynchronously`. The
Boiler #2 shape becomes fully fluent:

```csharp
builder.CreateInstance(
        new QualifiedName("Boiler #2", NamespaceIndexes[1]),
        p => new BoilerState(p))
    .Configure(n => n.UnderObjectsFolder());
```

**Companion gap, same theme:** `[NodeManager]` grows
`AdditionalNamespaceUris`, flowing through attribute discovery → binding
→ generator so the generated constructor reports a second (instance)
namespace at construction and the generated factory advertises it in
`NamespacesUris` — today `SetNamespaces` after construction is not
enough because `MasterNodeManager` builds its namespace routing from
what the manager reported when it was built.

**Scope boundary** (as discussed in the issue): startup-time
configuration only; for nodes created after startup the correct
primitive remains `IMasterNodeManager.AddReferencesAsync`.

**Reviewer notes**
- The generated-code change was validated against the real pipeline: a
forced fresh compile of `Opc.Ua.Server.Tests` (whose CoverageNodeSet
managers are `[NodeManager]`-generated) emits `await
CompleteConfigureAsync(externalReferences, cancellationToken)` between
`Configure` and `Seal()` and compiles against the real base class.
- The distribution consumer (`AddReferencesAsync`) already used
`AddReferenceIfMissing`, so the whole chain is defense-in-depth
idempotent.
- 15 new tests: double-run idempotence, second-pass pickup of
late-registered nodes, the new reference sugar, root-instance creation
incl. child-id rebasing and reference remapping, hosting end-to-end
Objects-folder placement, emitted-sequence and `AdditionalNamespaceUris`
generator tests, and a full Roslyn-pipeline attribute test. Docs updated
in `docs/NodeManagers.md` (new "Creating nodes under other managers'
nodes" section, attribute docs, fluent-surface sections).
- Verified locally: all touched projects build with 0 warnings; full
`Opc.Ua.Server.Tests` (4,725 passed / 0 failed / 5 skipped, net9.0),
`TypeTableTests` (113), `Opc.Ua.SourceGeneration.Core.Tests` (41),
`Opc.Ua.SourceGeneration.Tests` (132), and the Quickstarts.Servers
sample all pass.

## Related Issues

- Fixes #4329
- Motivating case: OPCFoundation/UA-.NETStandard-Samples#756 /
OPCFoundation/UA-.NETStandard-Samples#795 (Workshop/Boiler migration)

## Checklist

- [x] 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.
- [x] I have added all necessary documentation.
- [x] I have verified that my changes do not introduce (new) build or
analyzer warnings.
- [ ] I ran **all** tests locally using the **UA.slnx** solution against
at least .net **framework** and .net **10**, and all passed.
- [ ] I fixed **all** failing and flaky tests in the CI pipelines and
**all** CodeQL warnings.
- [ ] I have addressed **all** PR feedback received.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

---------

Co-authored-by: Claude Fable 5 <noreply@anthropic.com>
2026-08-29 10:38:56 +02:00
Marc Schier 0357380335 Source generator: typed NodeSet method signatures and referenced model accessors (#4124)
**Stack 2/5** — base #4123. Part of the #4096 split; see #4096 for the
overall picture.

> Review after #4123. The diff shown against `master` will include #4123
until that merges.

## What this is

Source generator only; no runtime library changes.

## Contents

- **Typed NodeSet method signatures.** A method imported from a NodeSet
now gets a typed signature. Methods that share a declared signature are
grouped onto one generated `MethodType`, named after its owner when the
plain name would collide, so two unrelated `Execute` methods no longer
share a class.
- **An override that keeps the signature it inherits keeps the
declaration it overrides.** Pointing `MethodDeclarationNode` at the
override itself made `MethodDeclarationId` self-referential. OPC 10000-4
lets a caller invoke a method with the NodeId of its declaration in the
ObjectType *or any supertype*, and `MethodState.MethodDeclarationId` is
what the server matches on, so `Call` stopped resolving and returned
`Bad_MethodInvalid` for every alarm subtype. An override that genuinely
changes its signature still becomes its own declaration.
- **`StateNumbers` / `TransitionNumbers` were emitted empty for every
NodeSet-sourced model**, because such children arrive as
`VariableDesign` rather than `PropertyDesign` and were filtered out. Any
companion model built from a NodeSet was writing `StateNumber = 0` on
the wire — a Part 16 defect well beyond the models in this stack. The
ModelDesign path is unchanged.
- **Referenced models can contribute fluent accessors**, carried by a
model dependency payload so a downstream model can extend an upstream
one.

## Notes for the reviewer

- `tests/Opc.Ua.SourceGeneration.Tests` is left at its `master` content
here. Its new vendor-subtype test uses the Robotics NodeSet as its
fixture, so it can only land with the Robotics change at the top of the
stack (5/5).
- `PumpInstanceNodeIdRegressionTests` gains six
`InputArguments`/`OutputArguments` entries for argument-less standard
condition methods. Typed method signatures materialise those properties
from the `ConditionType` declaration even where the method takes none.
That is a real deviation, pinned rather than hidden so it stays visible;
it is worth a follow-up.

## Validation

`dotnet build UA.slnx` — 0 errors.

| Suite | Result |
| --- | --- |
| Opc.Ua.SourceGeneration.Core.Tests | 3739 / 0 |
| Opc.Ua.SourceGeneration.Tests | 81 / 0 |
| Opc.Ua.Di.Tests | 304 / 0 |
| Opc.Ua.History.Tests | 506 / 0 |
| Opc.Ua.Gds.Tests | 1095 / 0 |

History and GDS are listed because they are what the method-declaration
fix above is load-bearing for: without it they fail with 10 and 370
errors respectively.

---------

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
Copilot-Session: 8cbb8cd0-f0cb-4ab0-bea2-6202fbf69485
2026-08-01 07:55:57 +02:00
Marc Schier 5b9bcedc62 Add OPC UA ISA-95 Common Model and Job Control support (#4089)
# Description

Adds first-class support for the OPC UA ISA-95 companion specifications:

- OPC-10030 Common Model.
- OPC-10031-4 Job Control V1.
- OPC-10031-4 Job Control V2.

The change introduces `Opc.Ua.ISA95`, `Opc.Ua.ISA95.Client`, and
`Opc.Ua.ISA95.Server`, together with a NativeAOT-compatible minimal
server sample and comprehensive tests.

## Highlights

- Compiles the three canonical NodeSets and identifier mapping CSV files
through the source generator.
- Adds NodeSet identifier mapping validation, typed method
arguments/results, companion event records, and generated method
argument nodes.
- Provides typed Common Model builders with normative relationships and
an injectable `GeoSpatialLocationType` provider.
- Implements lossless V1/V2 Job Control providers over a shared
version-neutral store, including state paths, status events, comments,
response queries, catalog changes, and cohesive DI registration.
- Adds subtype-aware typed clients, standalone encodeable registration,
`IIsa95ClientFactory`, and V2 status-event streaming.
- Adds the `MinimalIsa95Server` sample, package documentation, and an
ISA-95 guide with conformance and HA guidance.
- Tracks typed RSL/GPOS integration as follow-up issue #4095.

## Validation

- `Opc.Ua.ISA95.Tests`: 137/137 passed on `net10.0` and `net48`.
- Source-generator suites: 81/81 model, 90/90 stack, 3718 passed / 8
skipped core.
- `EventRecordFieldReaders` feedback tests: 6/6 on `net10.0` and
`net48`.
- `EventRecordFieldReaders` changed-method patch coverage: 100% line
coverage (36/36) and 100% branch coverage (22/22).
- `Opc.Ua.ISA95`, `.Client`, and `.Server` build across all configured
target frameworks without new diagnostics.
- Cobertura line coverage: 88.08% model, 90.04% client, 91.19% server.
- NativeAOT sample publishes and passes a live typed V2
Store/status-event validation.
- The ISA-95 NativeAOT smoke test passes in the source-generated native
test executable.
- OPC UA KB NodeSet validation reports zero errors for Common, V1, and
V2.

The broader NativeAOT executable still reports unrelated existing GDS
and complex-type test failures; the ISA-95-specific native test passes.

## Node state generator fixes

Generating method arguments inline for imported nodesets regressed every
model that already emits `InputArguments` / `OutputArguments` child node
factories:

- The inline block ran before the child factories.
`MethodState.CreateOrReplaceInputArguments` keeps the property that was
assigned first, so the child carrying the well-known NodeId was dropped
and a NodeId-less placeholder remained in the address space. This broke
browsing (reference descriptions without a target) and made method
arguments unreachable at their well-known NodeIds.
- The `MethodDeclarationId` fallback keyed on an autogenerated display
name redirected every declared method of the standard address space to
its own NodeId, which made method calls fail.

The inline block is now emitted after the child factories and reduced to
a value assignment when a child factory exists. The value is only
re-emitted when an argument references a namespace other than OPC UA,
because the value of an imported property is the verbatim XML of the
source nodeset whose namespace indices do not survive the import. The
`MethodDeclarationId` fallback is restricted to declarations without a
resolvable NodeId. The generated OPC UA address space is byte-identical
to `master` again.

## Related Issues

- Fixes #4088
- Follow-up: #4095
2026-07-28 12:01:57 +02:00
Marc Schier 7cec2d614d Move repository files to the consolidated layout 2026-07-16 06:25:54 +02:00