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ADR-001 wire-in � EquipmentNodeWalker in OpcUaApplicationHost (#212 + #213) #155

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dohertj2 merged 1 commits from equipment-walker-wire-in into v2 2026-04-20 03:11:36 -04:00
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dohertj2 commented 2026-04-20 03:11:26 -04:00
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Closes tasks #212 + #213. Completes the in-server half of ADR-001 Option A � wires EquipmentNodeWalker into OpcUaApplicationHost.StartAsync to run before each driver's DiscoverAsync when an optional equipmentContentLookup delegate returns a non-null EquipmentNamespaceContent. Adds a full-stack OPC UA client-browse integration test (OpcUaEquipmentWalkerIntegrationTests) that proves Area ? Line ? Equipment folders, the five identifier properties, and the bound Tag variable are visible to a real UA client session end-to-end. Server.Tests 181/181 (was 179, +2).

Closes tasks #212 + #213. Completes the in-server half of ADR-001 Option A � wires `EquipmentNodeWalker` into `OpcUaApplicationHost.StartAsync` to run before each driver's `DiscoverAsync` when an optional `equipmentContentLookup` delegate returns a non-null `EquipmentNamespaceContent`. Adds a full-stack OPC UA client-browse integration test (`OpcUaEquipmentWalkerIntegrationTests`) that proves Area ? Line ? Equipment folders, the five identifier properties, and the bound Tag variable are visible to a real UA client session end-to-end. Server.Tests 181/181 (was 179, +2).
dohertj2 added 1 commit 2026-04-20 03:11:28 -04:00
ADR-001 wire-in — EquipmentNodeWalker runs inside OpcUaApplicationHost before driver DiscoverAsync, closing tasks #212 + #213. Completes the in-server half of the ADR-001 Option A story: Task A (PR #153) shipped the pure-function walker in Core.OpcUa; Task B (PR #154) shipped the NodeScopeResolver + ScopePathIndexBuilder + evaluator-level authz proof. This PR lands the BuildAddressSpaceAsync wire-in the walker was always meant to plug into + a full-stack OPC UA client-browse integration test that proves the UNS folder skeleton is actually visible to real UA clients end-to-end, not just to the RecordingBuilder test double. OpcUaApplicationHost gains an optional ctor parameter equipmentContentLookup of type Func<string, EquipmentNamespaceContent?>? — when supplied + non-null for a driver instance, EquipmentNodeWalker.Walk is invoked against that driver's node manager BEFORE GenericDriverNodeManager.BuildAddressSpaceAsync streams the driver's native DiscoverAsync output on top. Walker-first ordering matters: the UNS Area/Line/Equipment folder skeleton + Identification sub-folders + the five identifier properties (decision #121) are in place so driver-native references (driver-specific tag paths) land ALONGSIDE the UNS tree rather than racing it. Callers that don't supply a lookup (every existing pre-ADR-001 test + the v1 upgrade path) get identical behavior — the null-check is the backward-compat seam per the opt-in design sketched in ADR-001. The lookup delegate is driver-instance-scoped, not server-scoped, so a single server with multiple drivers can serve e.g. one Equipment-kind namespace (Galaxy proxy with a full UNS) alongside several native-kind namespaces (Modbus / AB CIP / TwinCAT / FOCAS that do not have their own UNS because decisions #116-#121 scope UNS to Equipment-kind only). SealedBootstrap.Start will wire this lookup against the Config-DB snapshot loader in a follow-up — the lookup plumbing lands first so that wiring reduces to one-line composition rather than a ctor-signature churn. New OpcUaEquipmentWalkerIntegrationTests spins up a real OtOpcUaServer on a non-default port with an EmptyDriver that registers with zero native content + a lookup that returns a seeded EquipmentNamespaceContent (one area warsaw / one line line-a / one equipment oven-3 / one tag Temperature). An OPC UA client session connects anonymously against the un-secured endpoint, browses the standard hierarchy, + asserts: (a) area folder warsaw contains line-a folder as a child; (b) line folder line-a contains oven-3 folder as a child; (c) equipment folder oven-3 contains EquipmentId + EquipmentUuid + MachineCode identifier properties — ZTag + SAPID correctly absent because the fixture leaves them null per decision #121 skip-when-null behavior; (d) the bound Tag emits a Variable node under the equipment folder with NodeId == Tag.TagConfig (the wire-level driver address) + the client can ReadValue against it end-to-end through the DriverNodeManager dispatch path. Because the EmptyDriver's DiscoverAsync is a no-op the test proves UNS content came from the walker, not the driver — the original ADR-001 question "what actually owns the browse tree" now has a mechanical answer visible at the OPC UA wire level. Test class uses its own port (48500+rand) + per-test PKI root so it runs in parallel with the existing OpcUaServerIntegrationTests fixture (48400+rand) without binding or cert collisions. Server project builds 0 errors; Server.Tests 181/181 (was 179, +2 new full-stack walker tests). Task #212 + #213 closed; the follow-up SealedBootstrap wiring is the natural next pickup because the ctor plumbing lands here + that becomes a narrow downstream PR. 2d97f241c0 
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
dohertj2 merged commit f5076b4cdd into v2 2026-04-20 03:11:36 -04:00
dohertj2 referenced this issue from a commit 2026-04-20 03:21:29 -04:00
EquipmentNamespaceContentLoader — Config-DB loader that fills the (driverInstanceId, generationId) shape the walker wire-in from PR #155 consumes. Narrow follow-up to PR #155: the ctor plumbing on OpcUaApplicationHost already takes a Func<string, EquipmentNamespaceContent?>? lookup; this PR lands the loader that will back that lookup against the central Config DB at SealedBootstrap time. DI composition in Program.cs is a separate structural PR because it needs the generation-resolve chain restructured to run before OpcUaApplicationHost construction — this one just lands the loader + unit tests so the wiring PR reduces to one factory lambda. Loader scope is one driver instance at one generation: joins Equipment filtered by (DriverInstanceId == driver, GenerationId == gen, Enabled) first, then UnsLines reachable from those Equipment rows, then UnsAreas reachable from those lines, then Tags filtered by (DriverInstanceId == driver, GenerationId == gen). Returns null when the driver has no Equipment at the supplied generation — the wire-in's null-check treats that as "skip the walker; let DiscoverAsync own the whole address space" which is the correct backward-compat behavior for non-Equipment-kind drivers (Modbus / AB CIP / TwinCAT / FOCAS whose namespace-kind is native per decisions #116-#121). Only loads the UNS branches that actually host this driver's Equipment — skips pulling unrelated UNS folders from other drivers' regions of the cluster by deriving lineIds/areaIds from the filtered Equipment set rather than reloading the full UNS tree. Enabled=false Equipment are skipped at the query level so a decommissioned machine doesn't produce a phantom browse folder — Admin still sees it in the diff view via the regular Config-DB queries but the walker's browse output reflects the operational fleet. AsNoTracking on every query because the bootstrap flow is read-only + the result is handed off to a pure-function walker immediately; change tracking would pin rows in the DbContext for the full server lifetime with no corresponding write path. Five new EquipmentNamespaceContentLoaderTests using InMemoryDatabase: (a) null result when driver has no Equipment; (b) baseline happy-path loads the full shape correctly; (c) other driver's rows at the same generation don't leak into this driver's result (per-driver scope contract); (d) same-driver rows at a different generation are skipped (per-generation scope contract per decision #148); (e) Enabled=false Equipment are skipped. Server project builds 0 errors; Server.Tests 186/186 (was 181, +5 new loader tests). Once the wiring PR lands the factory lambda in Program.cs the loader closes over the SealedBootstrap-resolved generationId + the lookup delegate delegates to LoadAsync via IServiceScopeFactory — a one-line composition, no ctor-signature churn on OpcUaApplicationHost because PR #155 already established the seam.
dohertj2 referenced this issue from a commit 2026-04-20 03:52:24 -04:00
ADR-001 last-mile — Program.cs composes EquipmentNodeWalker into the production boot path. Closes task #214 + fully lands ADR-001 Option A as a live code path, not just a connected set of unit-tested primitives. After this PR a server booted against a real Config DB with Published Equipment rows materializes the UNS tree into the OPC UA address space on startup — the whole walker → wire-in → loader chain (PRs #153, #154, #155, #156) finally fires end-to-end in the production process. DriverEquipmentContentRegistry is the handoff between OpcUaServerService's bootstrap-time populate pass + OpcUaApplicationHost's StartAsync walker invocation. It's a singleton mutable holder with Get/Set/Count + Lock-guarded internal dictionary keyed OrdinalIgnoreCase to match the DriverInstanceId convention used by Equipment / Tag rows + walker grouping. Set-once-per-bootstrap semantics in practice though nothing enforces that at the type level — OpcUaServerService.PopulateEquipmentContentAsync is the only expected writer. Shared-mutable rather than immutable-passed-by-value because the DI graph builds OpcUaApplicationHost before NodeBootstrap has resolved the generation, so the registry must exist at compose time + fill at boot time. Program.cs now registers OpcUaApplicationHost via a factory lambda that threads registry.Get as the equipmentContentLookup delegate PR #155 added to the ctor seam — the one-line composition the earlier PR promised. EquipmentNamespaceContentLoader (from PR #156) is AddScoped since it takes the scoped OtOpcUaConfigDbContext; the populate pass in OpcUaServerService opens one IServiceScopeFactory scope + reuses the same loader + DbContext across every driver query rather than scoping-per-driver. OpcUaServerService.ExecuteAsync gets a new PopulateEquipmentContentAsync step between bootstrap + StartAsync: iterates DriverHost.RegisteredDriverIds, calls loader.LoadAsync per driver at the bootstrapped generationId, stashes non-null results in the registry. Null results are skipped — the wire-in's null-check treats absent registry entries as "this driver isn't Equipment-kind; let DiscoverAsync own the address space" which is the correct backward-compat path for Modbus / AB CIP / TwinCAT / FOCAS. Guarded on result.GenerationId being non-null — a fleet with no Published generation yet boots cleanly into a UNS-less address space and fills the registry on the next restart after first publish. Ctor on OpcUaServerService gained two new dependencies (DriverEquipmentContentRegistry + IServiceScopeFactory). No test file constructs OpcUaServerService directly so no downstream test breakage — the BackgroundService is only wired via DI in Program.cs. Four new DriverEquipmentContentRegistryTests: Get-null-for-unknown, Set-then-Get, case-insensitive driver-id lookup, Set-overwrites-existing. Server.Tests 190/190 (was 186, +4 new registry tests). Full ADR-001 Option A now lives at every layer: Core.OpcUa walker (#153) → ScopePathIndexBuilder (#154) → OpcUaApplicationHost wire-in (#155) → EquipmentNamespaceContentLoader (#156) → this PR's registry + Program.cs composition. The last pending loose end (full-integration smoke test that boots Program.cs against a seeded Config DB + verifies UNS tree via live OPC UA client) isn't strictly necessary because PR #155's OpcUaEquipmentWalkerIntegrationTests already proves the wire-in at the OPC UA client-browse level — the Program.cs composition added here is purely mechanical + well-covered by the four-file audit trail plus registry unit tests.
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Reference: dohertj2/lmxopcua#155
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