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Author SHA1 Message Date
Marc Schier 49305d9085 V2 subscription engine close gap for test and feature parity with classic engine (#3824) 
# Description

V2 subscription engine feature parity round to make the classic engine
eligible for deprecation. Splits the test surface so the classic and V2
engines can evolve independently, ports the gaps the classic-engine
integration tests had been exercising, and lands the public V2 API
additions needed to close them.

- Splits `Tests/Opc.Ua.Subscriptions.Tests` into a classic
(`Opc.Ua.Subscriptions.Classic.Tests`) and a V2
(`Opc.Ua.Subscriptions.Tests`) project to shrink CI time and let the two
engines diverge cleanly.
- Adds the V2 public-surface gaps required by the test ports
(`Subscription.ServerId` on the class, `SetSubscriptionDurableAsync`,
`SendInitialValuesOnTransfer`, unified `OnSubscriptionStateChangedAsync`
handler callback, per-item `ConditionRefreshAsync`, fluent
`LoadSubscriptionsAsync(Stream, …)` and `Subscription.Snapshot()` /
`RestoreAsync()` for save/load + transfer).
- Lands handler-centric design (no `PublishingStopped` property handlers
maintain derived state); always-sequential per-subscription delivery
documented + tested.
- **Adds short and long haul stability tests for the V2 `ManagedSession`
+ subscription engine. Closes #3744** (see "Issue #3744 Haul tests"
below).
- **Migrates SubscriptionStateSnapshot / MonitoredItemStateSnapshot to
`[DataType]` source-generator codecs**.
- `SubscriptionDurableV2Tests.cs` 5 V2 ports of the classic durable test
patterns.
- `V2FollowUpCoverageTests.cs` handler state-change callback, fluent
stream-based `LoadSubscriptionsAsync`, `SendInitialValuesOnTransfer`,
snapshot edge cases (empty / `DataChangeFilter` round-trip / concurrent
  mutation).
- `SubscriptionFailoverV2Tests.cs` forced channel-break with and without
`WithTransferSubscriptionsOnRecreate`.
- `MonitoredItemConditionRefreshLiveV2Tests.cs` ΓÇö live
`ConditionRefresh` against the reference server's event source; asserts
`RefreshStart` / `RefreshEnd` events flow through the handler.

## Fixes

- #3744 Haul tests (V2 ManagedSession + subscription engine)
`Tests/Opc.Ua.Sessions.Tests/ManagedSessionStabilityTest.cs` adds the
short/long haul coverage requested by
[#3744](https://github.com/OPCFoundation/UA-.NETStandard/issues/3744)
plus the bonus fault-injection variant:

| Test | Duration | Category | Purpose |
|---|---|---|---|
| `ShortHaulManagedSessionV2Async` | 2 minutes | `ManagedSessionHaul`
(`[Explicit]`) | Quick local sanity check of the V2 monotonicity
contract. |
| `LongHaulManagedSessionV2Async` | 90 minutes (configurable via
`TEST_DURATION_MINUTES`) | `ManagedSessionHaul` (`[Explicit]`) |
Long-running V2 stability + monotonicity. |
| `LongHaulManagedSessionWithFaultInjectionV2Async` | 90 minutes
(configurable) + fault every `FAULT_INJECTION_INTERVAL_SECONDS` (default
60s) | `ManagedSessionHaul` (`[Explicit]`) | **Bonus** ΓÇö force-closes
the subscriber transport channel periodically; verifies V2 manager
transfers/recreates the subscription and continues monotonic delivery
across reconnects. |

**Pattern.** A writer `ManagedSession` increments a `uint32` counter and
writes it into `Scalar_Static_Mass_UInt32_UInt32_00` every 250ms. A
subscriber `ManagedSession` runs a V2 subscription with a single
monitored item on the same node. `MonotonicCounterHandler` asserts each
received sample is *strictly greater than* the previous one. V2
`ISubscriptionNotificationHandler` per-subscription ordering guarantee.
Skipped values (sampling rate < write rate) are tolerated; duplicates
and reorderings are violations.
 2026-06-03 04:39:08 +02:00
Marc Schier 0000513cde Pluggable user-identity provider model (#3807) 
# Description

Introduces a pluggable user-identity provider model covering all OPC UA
Part 6 §6.5 mechanisms (Anonymous, UserName, X509, IssuedToken/JWT) on
both client and server, with full
`Microsoft.Extensions.DependencyInjection` integration, plus the Part 12
§9 `AuthorizationService` two-phase token-request flow **including
refresh-token rotation**, the Part 12 §8 KeyCredential Push model, and a
clean provider model for OPC 10000-12 §7.2 `ApplicationSelfAdmin`. The
work is split across phase-by-phase commits so it can be reviewed
independently; nothing here changes wire-level behaviour or forces
existing applications to migrate.

### Documentation

All under `Docs/`:

- `IdentityProviders.md` — full developer guide: three-layer model,
recipes, configuration reference, "what gets auto-wired" matrix, JWS
algorithm table, identity-augmenters section, **"Implementing your own
provider"** how-to subsections for Entra / OIDC / Windows / AspNetCore
(sibling files merged in per review feedback).
- `DependencyInjection.md` — `Identity` sections with `appsettings.json`
examples, identity-extension matrix, `WithAuthorizationService` +
`WithKeyCredentialPush` + `AddIdentityAugmenter` extensions documented.
- `RoleBasedUserManagement.md` — claim-criteria callout describing
`IIdentityClaims` probe surface.
- `AuthorizationService.md` — Architecture diagram +
`IAccessTokenProvider` conceptual narrative restored from master; modern
`StartRequestToken` / `FinishRequestToken` flow leads; refresh-token
recipe added.
- `KeyCredentialService.md` — Push model + Pull vs Push vs Bridge
decision matrix + Hybrid (Push + Pull) section; explicit experimental
warning for the bridge.
- `GDS.md` — KeyCredential Push, `StartRequestToken`,
`GdsApplicationSelfAdminProvider`, **shipped Refresh-token support with
rotation policy and audit semantics** all documented.
- `MigrationGuide.md` — User Identity Providers section listing
`[Obsolete]` markers + mechanical recipes; SelfAdmin migration via
`IIdentityAugmenter`; `EnableRefreshTokens` default note.
- `README.md` index entries.

## 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.
- [x] I ran **all** tests locally using the **UA.slnx** solution against
at least .net **framework** and .net **10**, and all passed.
- [x] I fixed **all** failing and flaky tests in the CI pipelines and
**all** CodeQL warnings.
- [x] I have addressed **all** PR feedback received.
 2026-06-02 01:14:54 +02:00
Marc Schier 5ff968fcfb Test project reorganization follow up (#3810) 
### Test project reorganization

Splits the integration- vs unit-test boundary along **project
boundaries**
and introduces a runtime-tier split for subscription tests so the
mainline
CI no longer drags in stress / durable suites.

**New projects:**

- `Opc.Ua.Stress.Tests` ΓÇö cross-area stress tier (designed to
absorb
  session / channel / pub-sub stress in future). Seeded with the 6
  subscription stress classes (`SubscriptionDepthTests`,
  `SubscriptionBasicDepthTests`, `MonitoredItemDepthTests`,
  `SubscriptionTransferDepthTests`, `SubscriptionPublishTooManyTests`,
`SubscriptionMultipleTests`). **Excluded from mainline CI; runs
nightly.**
- `Opc.Ua.Subscriptions.Durable.Tests` ΓÇö durable-subscription tier
  (needs `DurableSubscriptionsEnabled` + storage-backed lifetime).
  Receives `SubscriptionDurableTests` plus the migrated
  `DurableSubscriptionTest` and `DurableSubscriptionTestDebug`.
  **Excluded from mainline CI; runs nightly.**
- `Opc.Ua.Features.Tests` ΓÇö cross-feature integration tier.
Receives the
  `[OneTimeSetUp]`-bootstraps-its-own-server integrations for AliasNames
  (Part 17), Roles (Part 18), FileSystem (Part 5 §C / Part 20), and
  NodeCache. Also absorbs the misplaced
  `Tests/Opc.Ua.History.Tests/FileSystemTests.cs`.

**Client.Tests cleanup (~28 files moved):**

- `Opc.Ua.Sessions.Tests` (existing) gains 10 session integration files
  plus the 4 session benchmark files inline (`LoadTest`,
  `RequestHeaderTest`, `TraceableRequestHeaderTest`,
  `SecurityPolicyBenchmarks`).
- `Opc.Ua.Subscriptions.Tests` (existing) gains 4 subscription
  integration files plus `PooledNotificationBenchmarks` inline.
- `Opc.Ua.Client.ComplexTypes.Tests` (existing) gains all
  `ComplexTypes/*` integration files. The Client.Tests copy of
  `TypeSystemClientTest.cs` (a stale near-duplicate) is removed.
- Benchmarks **stay inline** as `[Test]` + BenchmarkDotNet dual-use; no
  new benchmark project (per the approved plan).

**CI pipeline:**

- `.azurepipelines/test.yml` now filters
  `TestCategory!=LongRunning&TestCategory!=Stress` on the mainline run.
- `-ExcludeFileName` now accepts a comma-separated list. The mainline
  matrix excludes the 3 nightly-tier project files alongside the
  existing `Opc.Ua.Aot.Tests.csproj`.
- `get-matrix.ps1` enhanced to support multi-pattern excludes.

`InternalsVisibleTo` extended on `Opc.Ua.Client` and `Opc.Ua.Server` to
grant the new test projects access. All affected projects build clean
(`0 Error`) for `net10.0`.

### Fix 8 skipped tests flagged as suspected bugs

Triage of every `[Ignore]` / `[Explicit]` test in `Tests/**` surfaced 8
entries labelled as suspected production bugs. After inspection:

- **1 real production bug** ΓÇö the
`CancellationTokenSource.CancelAsync`
  polyfill for netstandard2.0 / netfx was running cancellation callbacks
  inline on the caller's thread, deadlocking dispose paths
  (`SubscriptionManager.DisposeAsync`, etc.) when a callback awaits on
  the caller's `SynchronizationContext`. Fixed at the polyfill root by
  hoisting `Cancel()` onto the ThreadPool via `Task.Run`, matching real
  .NET 8+ semantics. Caveat (deferred `IsCancellationRequested`
  transition) documented inline; all in-repo callers use
  `await cts.CancelAsync()` so the deviation is invisible. Test
  `DrainAsyncWaitsForInFlightPublishToCompleteAsync` un-ignored ΓÇö
  verified passes on net48 (943 ms) and net10.0 (1 s).
- **2 flaky tests stabilized** ΓÇö both
  `ValidateMetaDataUpdateTimeNonZeroIsSentPeriodically` (MQTT JSON &
  UADP) now use `Stopwatch.GetTimestamp()` instead of `DateTime.Now`,
  compute deviation against the **median** interval (not the configured
  cadence, so a startup hiccup doesn't skew the run), and use a
  proportional `max(interval / 4, 50 ms)` tolerance. `[Ignore]` removed,
  `[Category("LongRunning")]` retained.
- **1 mis-labelled "bug"** ΓÇö
  `UnorderedMessagesWouldBeLostForSequentialPublishingAsync` asserts the
*documented* lossy trade-off of strict sequential publishing.
`[Explicit]`
  removed and renamed to
  `OldMessagesAbandonedAfterRepublishTimeoutInSequentialModeAsync`; it's
  now a CI-verified regression test for the WAI behavior.
- **4 false positives** ΓÇö `JsonEncoderTestsOld.cs` (16 kLOC) was
  excluded from compilation via `<Compile Remove>` and never reached the
  runner. The 4 `[Ignore("ProductionBugSuspected")]` markers inside were
  orphaned source from a previous JsonEncoder API. Active coverage lives
  in `JsonEncoderTests.cs` and `JsonValidationData` fixtures. Deleted
  the orphan file and the now-redundant `<Compile Remove>` line.
 2026-05-28 04:19:21 +02:00