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ecc-testing-fixes
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17 Commits
Author SHA1 Message Date
Marc Schier eb40a59566 More format and diagnostic fixes (#3780) 
Drive the solution to zero warnings / zero errors with analyzers on,
promote the consistently-fixed rules to error, and lock in coverage
on the only line of new logic.
 2026-05-26 06:06:09 +02:00
Marc Schier 889572472f Convert DataValue from class to readonly struct for further GC relief (#3796) 
Convert `DataValue` from a mutable reference type (`class`) to a `readonly struct` to eliminate per-allocation GC pressure on every attribute read, subscription publish, and history sample.

### Key API changes (user-visible)

| Before | After | Pattern |
|---|---|---|
| `class DataValue` | `readonly struct DataValue : INullable` | Foundation |
| `Equals(DataValue?)` / `operator ==(DataValue?, DataValue?)` | `Equals(DataValue)` / `operator ==(DataValue, DataValue)` | Value semantics |
| `IEncoder.WriteDataValue(string?, DataValue?)` | `IEncoder.WriteDataValue(string?, DataValue)` | Non-nullable wire API |
| `IDecoder.ReadDataValue(...) -> DataValue?` | `IDecoder.ReadDataValue(...) -> DataValue` | Same |
| `IDataChangeMonitoredItemQueue.PeekLast/Oldest()` | `TryPeekLastValue/Oldest(out DataValue)` | TryGet pattern |
| `IAggregateCalculator.GetProcessedValue(bool)` | `TryGetProcessedValue(bool, out DataValue)` | Same |
| `IUaPubSubDataStore.ReadPublishedDataItem(...)` | `TryReadPublishedDataItem(NodeId, uint, out DataValue)` | Same |
| `Dictionary<uint, DataValue?>` (NodeCacheContext) | `Dictionary<uint, DataValue>` | Default + IsNull |
| `IHistoryDataSource.FirstRaw/NextRaw` | `TryFirstRaw/TryNextRaw(out DataValue)` | TryGet pattern |
| `NodeState.ReadAttribute(... DataValue)` | `NodeState.ReadAttribute(... ref DataValue)` | Sync mutation via ref |
| `NodeState.ReadAttributeAsync(... DataValue)` | `NodeState.ReadAttributeAsync(...) -> ValueTask<(ServiceResult, DataValue)>` | Async return tuple |
| `obj as DataValue` (heterogeneous Dictionary<string, object>) | `obj is DataValue dv ? dv : default(DataValue)` | Safe struct cast |
| `Assert.That(dv, Is.Not.Null)` (tests) | `Assert.That(dv.IsNull, Is.False)` | Struct test pattern |
| `[Obsolete] Value` setter, all property setters | Removed; use ctor or `With*()` | Immutability |
| `[DataContract]` + `[DataMember]` | Removed; surrogate via `SerializableDataValue` + `DataValueSurrogateProvider` | Serialization |

### Wire format

Wire format is **byte-identical** to the previous class-based implementation across binary / JSON / XML encoders. Default DataValue (`.IsNull == true`) is treated as the equivalent of the old null reference (writes JSON `null`, binary `byte 0`, XML omitted element).

### Why TryGet pattern (instead of leaving `DataValue?`)

For methods that previously returned `DataValue?` to signal "no value available" (queue peek, aggregate result, data store lookup, history navigation), the conversion to `bool TryGet(out DataValue)` matches BCL conventions (`Dictionary.TryGetValue`, `Queue.TryPeek`, `Int32.TryParse`) and gives the caller an explicit "may be absent" affordance without `Nullable<DataValue>` overhead.

### Breaking changes summary

- `DataValue` is now a `readonly struct` - boxing/unboxing semantics change for callers using `object`-typed APIs.
- `IEncoder.WriteDataValue` / `IDecoder.ReadDataValue` / `ReadDataValueArray` interface signatures lose the `Nullable` wrapper.
- `IDataChangeMonitoredItemQueue.PeekLastValue` / `PeekOldestValue` -> `TryPeekLastValue` / `TryPeekOldestValue` (out parameter).
- `IAggregateCalculator.GetProcessedValue` -> `TryGetProcessedValue` (out parameter).
- `IUaPubSubDataStore.ReadPublishedDataItem` -> `TryReadPublishedDataItem` (out parameter).
- `NodeState.ReadAttribute` takes `ref DataValue`; `ReadAttributeAsync` returns `ValueTask<(ServiceResult, DataValue)>`.
- `DataValue` property setters removed (use constructor + `With*` mutators).
 2026-05-23 11:38:49 +02:00
Marc Schier 3e5f129c6f Enable nullable in Stack, Libraries (9), and Applications projects (#3732) 2026-05-17 12:55:24 +02:00
Copilot 54cc3d88b1 Prepare for C# 15 union types: UnionAttribute polyfill, TryGetValue rename, HasValue (#3727) 2026-05-02 18:33:46 +02:00
Marc SchierandCopilot b2cbf6b03b Fix DataValue(int) overload resolution bug (#3721) 
new DataValue(42) silently resolved to DataValue(StatusCode) instead of
DataValue(Variant) due to C# 'better conversion target' rule — StatusCode
wins because it implicitly converts to Variant, making it 'more specific'.
This caused m_value = Variant.Null and downstream BadTypeMismatch failures.

Changes:
- Add [OverloadResolutionPriority(1)] on DataValue(Variant) constructor
- Obsolete DataValue(StatusCode) and DataValue(StatusCode, DateTimeUtc)
- Add DataValue.FromStatusCode() static factory methods (2 overloads)
- Delete DataValue(DataValue) copy constructor
- Add DataValue.Copy() instance method using base.MemberwiseClone()
- Rewrite Clone()/MemberwiseClone() to delegate to Copy()
- Migrate all call sites across 14 files
- Add tests verifying new DataValue(42) wraps value correctly
- Update MigrationGuide.md

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
 2026-04-30 14:24:45 +02:00
Marc Schier 03777ecb09 New Json decoder/encoders, array/matrix abstractions, ByteString, and more. (#3619) 
- **Collections overhaul** — new/rewritten collection types (`ArrayOf`, `Collections` commits)
- **`Variant` builder/accessor** — new APIs for constructing and accessing Variants
- **`NodeId` operators made explicit** — breaking change for implicit conversions
- **Version bumped to 1.6** with preview build support
- **NumericRange** uses Variant
- **object** type accessors and general usage removed.

### 🏗️ Infrastructure
- Build config updated; `.NET 10` targeting
- InternalsVisibleTo moved to `.csproj`
- Pipeline/CI adjustments
 2026-03-18 12:23:30 +01:00
Marc Schier f66ceffd75 Immutable built in types and code generation (#3534) 
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
 2026-02-12 16:27:07 +01:00
Marc Schier 2960388560 Update headers and license files (#3388) 
Update license headers to copy right year 2025, replace RCL/GPL headers with MIT, replace the nuget license with MIT (via license expression).
 2025-12-04 19:44:40 +01:00
Marc Schier f8042e445c Check bounds for switched on values and roslyn cleanup (#3264) 2025-10-21 09:28:19 +02:00
Marc Schier 8e7a73c7df Introduce telemetry context and proper use of ILogger (#3213) 2025-09-25 20:25:31 +02:00
Marc Schier 9830e5d53e Enable roslynizer and fix all analyzer issues (#3157) 
* Fix warnings and suggestions
* Enable roslynator
 2025-08-16 04:10:24 -07:00
Martin Regen 4c0880c800 Fix codesmells. No functional changes and bug fixes. (#2368) 
Fix many warnings to improve code quality or simplify the code.
 2023-11-07 10:34:42 +01:00
Suciu Mircea Adrian 75744e27dd Support Metadata frames in PubSub (#1518) 
Refactored WriterGroupPublishState out of IPubSubConnection file
    JSON Discovery messages for DataSetMetaData
    UADP Discovery messages for DataSetMetaData (Request + response)
    Refactored the UaPublisher, extracted IntervalRunner and reused it in UdpDiscoveryPublisher & UdpDiscoverySubscriber
    Proposal: automatic setting of ConfigurationVersion based on the rules in 6.2.2.1.5 (part 14)in new class Opc.Ua.PubSub.Configuration.ConfigurationVersionUtils
    New events added to UaPubSubApplication
    Implemented support for UADP Data Key Frame DataSetMessages

    Unit tests were updated to cover the new functionality
 2021-09-28 11:54:37 +03:00
Alin Moldovean 08164fe04a MetaData support for PubSub library (#1452) 
* Metadata support
* Fixes for UaPubSub.
* Add support for delta frames.
 2021-07-08 19:29:24 +03:00
Alin Moldovean a5e1f4c8cd PubSub fixes (#1394) 2021-05-12 13:33:29 +03:00
Alin Moldovean 7a4a22201b MQTT support in PubSub library (#1376) 
Implementation of MQTT support in PubSub library
 2021-04-28 15:31:06 +03:00
Alin Moldovean 16ff6511f2 PubSub Support for UADP (#1195) 
* Add PubSub library and console samples. #1169
 2021-01-08 17:48:09 +02:00