10 Commits

Author	SHA1	Message	Date
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
Marc Schier	43ce7ed229	Code clean up and improvements (#3532) ... This pull request modernizes the OPC UA .NET codebase and tests, removes .NET Standard 2.0 support from certificate/security code, and updates test code to use C# 12 and .NET 8+ features for clarity and maintainability. - Certificate and BouncyCastle interop files (e.g., CertificateBuilder.cs, X509Extensions.cs, X509SignatureFactory.cs) are refactored to drop NETSTANDARD2_0 support and use modern .NET APIs and conditional compilation. - Test code across the codebase is updated to use default, strongly-typed Parse methods, collection expressions, and improved async/await patterns. - Exception handling and assertions in tests are modernized, and test method naming is made consistent with Async suffixes. - The project and build files are updated to clarify Roslynator analyzer usage and remove obsolete netstandard tags. - General code and test cleanup includes improved null safety, type safety, and removal of deprecated or unused code.	2026-02-09 13:37:06 +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	35db52a7a6	Move from .net 9 to .net 10 SDK and build new target framework .net 10 (#3333)	2025-11-13 10:45:47 +01:00
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
romanett	a269f75e46	[Console Reference Server] Implement file based queues for durable Subscriptions (#3042) ... * Enable queues with file storage * Implement persistent queues * fix issue * undo unwanted changes * more fixes * Add Tests, specify needed performance characteristics, make reference implementation more resilient * Adress review feedback * Improve Test failure Message * increase wait time for queue restore in test on slow agents * better batch dispose * improve test * lock batch operations * Increase test publish interval for slow azure windows agent	2025-04-10 16:15:13 +03:00
romanett	2f0770c569	[Server] Restore durable subscriptions on Server Restart (#3025) ... * Enable Durable Subscriptions (#9) * [Server] Durable Subscriptions (#2683) * Implement a system test for DurableSubscriptions (#2839) * Client Side Co-authored-by: ALTERNATE-DEV\Archie <archie@dreamsandadventures.ca> * make a static Method CalculateRevisedQueueSize * Adress review feedback * fix FilterRetainTests * Add MonitoredItem Id to Queues Use NodeIdDictionary where possible * first proto * fix reference server * implement store * initialize early * fix issues * Move to Reference Server & start implementing queue restore * Persist queues * Register queues in factory after restore * Add Docs * minor fixes * Test Subscription Restore & Transfer * fix Durable Subscription Test Browse * Fix conversion of extension objects * use CustomConverter for NumericRange * Adress review Feedback * Documentation improvements * Update Readme * update sampling group manager to work without session * remove launch settings	2025-03-24 11:45:09 +02:00
romanett	ef9387b525	Enable Durable Subscriptions (#2978) ... * Enable Durable Subscriptions (#9) * [Server] Durable Subscriptions (#2683) * Implement a system test for DurableSubscriptions (#2839) * Client Side Co-authored-by: ALTERNATE-DEV\Archie <archie@dreamsandadventures.ca> * make a static Method CalculateRevisedQueueSize * Adress review feedback * fix FilterRetainTests * Add MonitoredItem Id to Queues Use NodeIdDictionary where possible	2025-02-28 13:46:49 +02:00