Commit Graph

2870 Commits

Author SHA1 Message Date
Joseph Doherty d3aaa4a411 docs(mtconnect): correct the Task 0 decision — TrakHound cannot parse XML as pinned 2026-07-27 13:57:28 -04:00
Joseph Doherty 1990d21733 feat(mtconnect): agent client /probe parse to device model (Task 6) 2026-07-27 13:57:28 -04:00
Joseph Doherty b13cf5c6e8 fix(mtconnect): options carry the authored tag definitions (Task 2 follow-up) 2026-07-27 13:57:28 -04:00
Joseph Doherty 79e30d1ead fix(mtconnect): infer numeric EVENT types from the probe's UPPER_SNAKE spelling (Task 3 follow-up) 2026-07-27 13:57:28 -04:00
Joseph Doherty 3ca8ddf6f7 test(mtconnect): canned probe/current/sample XML fixtures incl. forced-gap (Task 4) 2026-07-27 13:57:28 -04:00
Joseph Doherty c0729ae5c0 feat(mtconnect): pure data-type inference table + golden test (Task 3) 2026-07-27 13:57:28 -04:00
Joseph Doherty 992ffe5620 feat(mtconnect): IMTConnectAgentClient seam + neutral parse DTOs (Task 5) 2026-07-27 13:57:28 -04:00
Joseph Doherty 18742ea92b feat(mtconnect): driver options + tag definition records (Task 2) 2026-07-27 13:57:28 -04:00
Joseph Doherty e36b920113 build(mtconnect): scaffold Contracts+Driver+Tests projects, add to slnx (Task 1) 2026-07-27 13:57:28 -04:00
Joseph Doherty 3b92b7cc83 docs(mtconnect): record TrakHound-vs-hand-rolled client decision (Task 0) 2026-07-27 13:57:11 -04:00
Joseph Doherty a0b5095b3b docs(drivers): un-stale the MQTT README rows + track every known gap as an issue
v2-ci / build (push) Successful in 4m41s
v2-ci / unit-tests (push) Failing after 16m11s
The cross-driver README still described MQTT as pre-P2 — "Sparkplug B is P2
(`mode: SparkplugB` is a placeholder)" and "Sparkplug B has no fixture yet (P2)".
Both were false as of the P2 merge (c3a2b0f7): SparkplugB is a fully implemented
mode and the live suite is 15 tests (7 plain + 8 Sparkplug) against a
project-owned C# edge-node simulator. Mqtt.md and the scadaproj index were both
already correct; only this file missed the P2 sweep.

Filed the nine Known-gaps rows as tracking issues and linked them, so the table
stops being the only record of them:

  #507  IRediscoverable is inert in v3 (platform gap — also Galaxy/TwinCAT/AbCip)
  #508  write-through (IWritable) — NCMD/DCMD + plain publish
  #509  a metric name containing '/' cannot be browse-committed
  #510  _canRebirth captured at browse-open — reaped session still draws button
  #511  Sparkplug primary-host STATE publishing (ActAsPrimaryHost)
  #512  .Browser references .Driver — extract the client-options builder
  #513  editor writes a meaningless payloadFormat into a Sparkplug blob
  #514  Request-rebirth unarmable on a plant that birthed before the window
  #515  DataSet / Template / PropertySet metric support

#507 is the one worth reading: it is a v3 platform gap, not an MQTT bug —
DriverHostActor.HandleDiscoveredNodes hard-returns, so every IRediscoverable
driver fires into a void and the edge gaining a point needs a redeploy to show up.

No code change; docs + issue links only.
2026-07-27 13:52:08 -04:00
Joseph Doherty 394558e6c2 docs: the umbrella-index edit belongs on scadaproj's main, and must be pushed
v2-ci / build (push) Successful in 5m39s
v2-ci / unit-tests (push) Failing after 3h12m23s
The cross-repo propagation rule said WHAT to update but not WHERE. scadaproj is
a separate repo with its own checkout, so committing there inherits whatever
branch it happens to be on — usually an unrelated feature branch, sometimes one
with no upstream — and the index then disagrees with reality for as long as that
branch stays unmerged.

Observed 2026-07-27: the Sql poll driver's index entry had sat unpushed on
feat/overview-dashboard since 2026-07-24 despite this rule, and the Mqtt driver's
entry was about to join it. Both recovered by cherry-picking onto main.

Records the explicit procedure and says to cherry-pick stranded index commits
rather than merge the branch they are stuck on. The canonical statement now also
lives in scadaproj's own CLAUDE.md (main @ 75f267c).

Claude-Session: https://claude.ai/code/session_01GASWkNEi68FSCtvr6rLoEW
2026-07-27 13:36:31 -04:00
Joseph Doherty c3a2b0f773 Merge branch 'feat/mqtt-sparkplug-driver'
v2-ci / build (push) Successful in 5m36s
v2-ci / unit-tests (push) Failing after 22m40s
# Conflicts:
#	src/Core/ZB.MOM.WW.OtOpcUa.Core.Abstractions/DriverTypeNames.cs
#	src/Server/ZB.MOM.WW.OtOpcUa.AdminUI/Components/Shared/Drivers/DriverConfigModal.razor
#	src/Server/ZB.MOM.WW.OtOpcUa.AdminUI/EndpointRouteBuilderExtensions.cs
#	src/Server/ZB.MOM.WW.OtOpcUa.AdminUI/Uns/TagEditors/TagConfigEditorMap.cs
#	src/Server/ZB.MOM.WW.OtOpcUa.AdminUI/Uns/TagEditors/TagConfigValidator.cs
#	src/Server/ZB.MOM.WW.OtOpcUa.AdminUI/ZB.MOM.WW.OtOpcUa.AdminUI.csproj
#	src/Server/ZB.MOM.WW.OtOpcUa.Host/Drivers/DriverFactoryBootstrap.cs
2026-07-27 13:31:39 -04:00
Joseph Doherty 123ddc3f40 fix(scripteditor): complete + hover absolute RawPaths (#490)
v2-ci / build (push) Successful in 4m25s
v2-ci / unit-tests (push) Failing after 14m58s
The issue reports a missing feature. The cause is a stale projection, and the
consequence was worse than the gap described.

`ScriptTagCatalog` still emitted `Tag.TagConfig.FullName` — the pre-v3 driver wire
address. Since v3 the mux key is the **RawPath**: `AddressSpaceComposer` harvests the
`ctx.GetTag("…")` literals into `DependencyRefs`, those become `VirtualTagActor`
dependency refs registered with `DependencyMuxActor`, whose `_byRef` is keyed Ordinal
by `AttributeValuePublished.FullReference` — and a driver's wire ref IS the RawPath
(`DriverHostActor._nodeIdByDriverRef` is keyed `(DriverInstanceId, RawPath)`). The
`{{equip}}/<RefName>` form already substitutes to RawPaths at both compose seams.

So the catalog was wrong in BOTH directions, not merely incomplete: completion
offered paths that could never resolve at runtime, while a CORRECT absolute RawPath
got no completion and hovered as "not a known configured tag path". The file's own
comment admitted the raw/UNS catalog was left for "Batch 2/3" and it never came.

Now projected through the shared `RawPathResolver` — the same byte-parity authority
`DraftValidator` and `AddressSpaceComposer` use — so a suggested path is identical to
the one the deploy gate and the runtime compute. A tag with a broken ancestry chain
resolves to null and is omitted: the runtime could not route it either, so offering
it would be a lie. Hover additionally gains the owning `DriverInstanceId`, which the
topology now makes available (it was always null before).

Editor-accepts <=> publish-accepts is preserved: no diagnostic keys off this catalog
(`OTSCRIPT_EQUIPREF` only marks `{{equip}}` paths), so this changes completion and
hover only — it cannot newly reject a script.

The existing tests pinned the v2 contract and were re-authored: a RawPath only exists
if the RawFolder -> DriverInstance -> Device -> TagGroup -> Tag chain does, so the
seed now builds one. Added coverage for group-nested paths, a driver at the cluster
root (no folder segment), a broken chain being omitted rather than guessed, and the
pre-v3 FullName no longer resolving.

Live-gated on docker-dev (rig rebuilt, both central nodes):
- completion, empty literal -> every RawPath incl. group-nested
  `opcua1/plc/OpcPlc/Telemetry/Basic/AlternatingBoolean`
- completion, prefix `pymod` -> `pymodbus/plc/HR200X`, `pymodbus/plc/ImportedTag`
- hover `pymodbus/plc/HR200X` -> "Tag · Type UInt16 · Driver MAIN-modbus"
- hover an unknown path -> "Not a known configured tag path"

AdminUI 742/742; script-analysis 55/55; solution builds 0 errors.
2026-07-26 11:08:11 -04:00
Joseph Doherty 0f38f48679 merge: Modbus RTU-over-TCP transport (#495)
Wave 1 of the driver-expansion program. The branch was complete and live-gated but
had never been merged; it sat 15 commits ahead and 50 behind master.

Purely additive behind the existing IModbusTransport seam — the application protocol
(function codes, codecs, planner, coalescing, write path, probe, materialisation,
HistoryRead) is identical across TCP and RTU; only the wire framing differs
([addr][PDU][CRC-16], no MBAP, no TxId). Zero changes to codecs/planner/health.

Selected by a new Transport config field (ModbusTransportMode: Tcp | RtuOverTcp),
routed through ModbusTransportFactory (throws on unknown mode), with the string-enum
guard on options/DTO/factory and a Transport selector on the AdminUI Modbus form.
ModbusSocketLifecycle was extracted from ModbusTcpTransport (behaviour-preserving)
and is composed by both transports.

Descoped by design: direct-serial (System.IO.Ports) and Modbus ASCII — RTU buses are
reached exclusively via a serial->Ethernet gateway. No per-tag config changes; the
existing per-tag UnitId already makes a multi-drop bus work.

Re-validated against current master at merge time (the branch's own gate predates 50
commits of master): no overlapping files, clean merge, solution builds 0 errors, and
Modbus 344/344, Modbus.Addressing 161/161, AdminUI 740/740, Runtime 507/507,
Configuration 131/131 all pass. Confirmed the Transport selector is still reachable
through master's current authoring path (DriverConfigModal -> ModbusDriverForm), so
the branch's live /run gate result still applies.
2026-07-26 10:58:51 -04:00
Joseph Doherty 0e93587b1c merge: test-correctness, config-secret and AdminUI fixes (#503 #501 #493 #499 #488 #505)
v2-ci / build (push) Successful in 4m14s
v2-ci / unit-tests (push) Failing after 14m48s
Six issues closed, one new one found, filed and fixed.

- #503 Galaxy EventPump flake — root cause was cross-test measurement leakage on a
  STATIC Meter, not a timing budget. 15/15 clean under the issue's own contention
  recipe. Three further defects in the same test fixed on the way, including a
  "held" dispatch loop that was never held (async void on EventHandler<T>) and an
  assertion built from a derived quantity, which could only fail spuriously.
- #501 Three absence assertions given positive controls (a fourth site the issue
  did not list). Proven falsifiable by breaking the production code: both breaks
  passed under the old AwaitAssert form.
- #493 docker-dev seed backfills ClusterNode.GrpcPort; upgrade step documented.
  Deliberately no EF migration — the right value is per-node config the DB cannot
  derive, and a wrong dial target is worse than a NULL that is already skipped.
- #499 Sql credentials refused in ClusterNode.DriverConfigOverridesJson, gated at
  the SAVE rather than the deploy: node overrides never enter the artifact, so a
  deploy gate would not stop the credential being stored. Live-verified.
- #488 Periodic desired-vs-actual subscription reconcile (option A), gated on
  ISubscribable so a non-subscribable driver is not Subscribe-spammed forever.
- #505 The AdminUI cluster-node editor had never worked at all — HTTP 500 on load
  (InputNumber<byte>) and Save a silent no-op (NodeId regex forbids the ':' every
  NodeId contains), with no ValidationSummary to reveal it. Pre-existing on master,
  invisible to 739 green AdminUI tests, found only by going to drive the page.

Also closed #492 (already fixed by 2964361a and drill-verified; no code change).

Verified: solution builds 0 errors; 2406 tests pass across Runtime (507), AdminUI
(739), Configuration (131), Galaxy (317), Cluster (147), Core (260),
ScriptedAlarms (82) and Sql (223). #499 and #505 live-gated on docker-dev with both
central nodes rebuilt; rig restored afterwards.
2026-07-26 10:51:43 -04:00
Joseph Doherty 4cc0215bb4 fix(adminui): the cluster-node editor was dead — 500 on load, silent no-op on save
Both defects are PRE-EXISTING (present on master, unrelated to #499) and were found
live-verifying the #499 guard, which lives on this page and was unreachable without
them fixed.

1. **HTTP 500 on load.** `FormModel.ServiceLevelBase` was `byte` to match the
   entity, and `InputNumber<T>`'s static constructor throws outright for
   `System.Byte` — "The type 'System.Byte' is not a supported numeric type". That
   escapes `BuildRenderTree` unhandled, which in Blazor takes the WHOLE page down,
   not one field. `/clusters/{id}/nodes/{nodeId}` and `.../nodes/new` have never
   rendered. Now `int` with the same `[Range(0, 255)]` and a cast on the way to the
   entity, so the stored type is unchanged. (Same failure mode as #504: an
   unhandled throw inside the render tree is a page-kill.)

2. **Save did nothing, silently.** `NodeId` was validated against
   `^[A-Za-z0-9_-]+$`, which forbids the colon — but every NodeId in this system is
   `host:port` (`ClusterRoleInfo` and `ConfigPublishCoordinator` derive it as
   `member.Address.Host:Port`, the seed writes `central-1:4053`, and
   `NodeDeploymentState.NodeId` is FK-bound to it). So every existing node failed
   validation, `OnValidSubmit` never ran, and the button was inert. Pattern now
   allows `:` and `.` (hostnames may be dotted).

3. **Added the missing `<ValidationSummary/>`.** The form had a
   `DataAnnotationsValidator` but nothing rendering its output, so a validation
   failure produced no feedback at all — which is precisely how (2) stayed
   invisible. This is the change that stops the next such defect being silent.

Live-verified on docker-dev (both central nodes rebuilt, since :9200 round-robins
the pair): page 500 → 200 on both routes, and a real edit now persists.
2026-07-26 10:42:04 -04:00
Joseph Doherty 4b9bcddbcc feat(drivers): periodic reconcile of desired vs actual subscriptions (#488)
Option A from the issue — the cheap consistency check, no interface change.

The desired ref set was re-applied on a Connected TRANSITION (`ResubscribeDesired`)
and on a deploy's `SetDesiredSubscriptions`, and nowhere else. A subscription lost
while the driver STAYED Connected — a subscribe that failed and was never retried,
a handle dropped down an error path — left the actor subscribed to nothing while
still reporting Healthy, indefinitely.

`ReconcileSubscription` now rides the existing 30 s `health-poll` tick: while
Connected, a driver holding a desired set but no live handle is re-subscribed.

Gated on `ISubscribable`. A driver that cannot subscribe at all can still be handed
a desired set, and without the guard it would be told `Subscribe` every tick and
fail every tick, forever.

This is a state-machine consistency check, NOT a probe — it can only see that this
actor holds no handle, never that a handle is present but dead server-side, because
`ISubscriptionHandle` is opaque. That is option B, and it stays deferred until a
real occurrence shows the handle outliving the subscription; it would need a
liveness member implemented across all eight drivers with different subscription
mechanics.

A redundant `Subscribe` is possible (a tick queued ahead of an already-queued one
observes the same no-handle state) and is harmless: `HandleSubscribeAsync` is a
`ReceiveAsync`, so no tick is processed mid-subscribe, and it drops any prior
subscription before establishing the new one. Suppressing it would need a
pending-subscribe flag threaded through every self-tell site — more state than the
race is worth.

`healthPollInterval` becomes an optional Props parameter, mirroring the existing
`rediscoverInterval` seam, so a test can drive the reconcile without waiting 30 s.

Three tests. The reconcile itself is proven by a stub whose FIRST subscribe throws:
nothing else would ever retry it, so a second attempt can only come from the
reconcile — disabling `ReconcileSubscription` turns it red. The two guard tests are
absence assertions and are bounded by a positive control rather than a sleep: a
counting health publisher makes ticks PROCESSED observable, so "still one subscribe"
means the reconcile ran and declined, not that the timer had not fired.

Explicitly not deploy-time drift (#486) — re-asserting an already-correct desired
set would not have helped there.
2026-07-26 10:30:19 -04:00
Joseph Doherty 2193d9f2e4 fix(config): refuse to store a Sql credential in a node config override (#499)
`ClusterNode.DriverConfigOverridesJson` is the third surface a Sql driver's config
is persisted on, and the only one nothing gated. It is a map keyed by
`DriverInstanceId` merged onto the cluster-level `DriverConfig`, so a literal
`connectionString` pasted there leaks exactly as one pasted into the driver — the
leak #498 closed for `DriverInstance.DriverConfig` and `Device.DeviceConfig`.

Gated at the SAVE, not at the deploy — a deliberate departure from both options the
issue offered:

- `DraftSnapshot` carries no `ClusterNode` rows, and adding them would widen the
  snapshot and every builder of one for a single rule about a value that never
  enters the artifact.
- More to the point, a deploy gate is the wrong instrument here. Node overrides are
  not in the artifact, so blocking a deploy would not stop the credential being
  stored — it is already in the database and replicated by then. Refusing the save
  is the only point where "refuse to store it" is literally true, which is #498's
  own framing: discarding a secret on read is not the same as refusing to store it.

The check moves into a shared `SqlCredentialGuard` so the two enforcement points
cannot drift; `DraftValidator` now calls it instead of its own private helper.

Kept deliberately narrow — the `Sql` driver's `connectionString` only, and only for
instance ids that ARE Sql drivers. The issue asked whether to generalise to
credential-shaped keys across every driver type; not doing that, for the same
reason #498 did not: a broader sweep would start refusing configs that are
legitimate today for drivers which never made an indirect-credential guarantee,
which is a regression rather than defence in depth. Widen per driver, as each gains
its own contract.

The error names the offending driver instance(s) and NEVER the value — it reaches
the AdminUI and the audit trail.

14 new cases cover both halves, including the case variants (System.Text.Json binds
`ConnectionString` to `connectionString`, so a case variant is the same key, not a
bypass), non-Sql ids being ignored, and every blank/malformed/non-object shape.
2026-07-26 10:30:04 -04:00
Joseph Doherty 8b7ea3213d fix(rig,docs): backfill ClusterNode.GrpcPort and document the upgrade step (#493)
`GrpcPort` is a nullable column added by Phase 5. Every insert in the docker-dev
seed is INSERT-if-not-exists — the right shape for a re-runnable seed, but it means
a new nullable column never reaches rows an earlier version of the file created. On
a persisted volume all six rows kept NULL, central found no dial targets, and
`TelemetryDial:Mode=Grpc` connected to nothing. (`AkkaPort` escaped this only
because it is NOT NULL with a default of 4053.)

Seed now backfills `GrpcPort IS NULL AND CreatedBy = 'docker-dev-seed'` to 4056.
NULL only — it must not overwrite a port an operator set deliberately on a
long-lived dev volume, and NULL is the unambiguous "predates the column" marker.

Deliberately NOT doing the suggested EF data migration for real deployments. The
correct value is each node's own `Telemetry:GrpcListenPort`, which is
per-deployment configuration the database cannot derive; a migration could only
invent one, and a WRONG dial target is worse than the NULL the dialer already skips
explicitly with a throttled warning. The rig can be backfilled because there the
port is fixed by docker-compose.yml and therefore actually knowable.

`docs/Telemetry.md` gains an upgrade section stating the prerequisite, the symptoms
(the throttled skip log, LISTEN with no ESTABLISHED, the pill never going live) and
the UPDATE to run before flipping any node to Grpc — plus why there is no migration.
2026-07-26 10:29:51 -04:00
Joseph Doherty 240d7aa8aa fix(test): give the three absence assertions a positive control (#501)
`AwaitAssert` returns on its FIRST success, so an assertion that is already true at
t=0 passes instantly and spends none of its duration. All three sites asserted an
absence against a collection that starts empty, so none of them ever gave the
handler the time their comments claimed.

Replaced with mailbox-ordering positive controls rather than sleeps:

- `RouteNativeAlarmAck_unknown_node_is_dropped` — follow the unmapped ack with a
  MAPPED one. The host forwards via `Tell` and the child handles `RouteAlarmAck`
  with `ReceiveAsync` (which suspends its own mailbox), so once the control reaches
  the driver the unmapped one has provably been handled.
- `RouteNativeAlarmAck_on_non_primary_is_dropped` — the role itself is the control:
  return the node to Primary and re-send. Comments (`gated` / `control`) are the
  discriminator, so a leaked ack is visible rather than merged into a count.
- `PeerProbeSupervisorTests.Single_node_snapshot_spawns_no_children` — a FOURTH site
  the issue did not list. It says the other `ChildCount.ShouldBe(0)` waits are each
  preceded by a `ShouldBe(1)`; that is true of three of the four, but not this one,
  which asserts the initial state. Now followed by a two-node snapshot: the count
  reaching 1 proves the single-node snapshot was processed, and a local-node child
  would have made it 2.

The issue warned these may turn red, which would be a real defect surfacing. They
did not — the routing is correct. Proven by breaking it deliberately instead:
disabling the Primary gate reddens the Secondary test, and routing unmapped ids to
an arbitrary mapping reddens the unknown-node test. Under the old form both breaks
passed.
2026-07-26 10:29:41 -04:00
Joseph Doherty 95295210b0 fix(test): scope the EventPump counter capture to its own pump (#503)
Root cause was cross-test measurement leakage, not a timing budget.

EventPump's `Meter` is STATIC — one instance per process — and a `MeterListener`
can only select by *meter* in `InstrumentPublished`. `StartMeterCapture` therefore
received measurements from every `EventPump` alive anywhere in the assembly. xUnit
runs test classes in parallel and several build pumps (`EventPumpStreamFaultTests`,
the `Driver-X` test in this same file), so a sibling's events landed in these
counters. That is why the flake needed a busy box: it needed two tests to overlap.
Measured directly during the gate — `Received = 11` in a run that emitted 10.

The old `Received == Dispatched + Dropped + InFlight` assertion is what turned the
leak into a failure. `InFlight` is DERIVED as `Received - Dispatched - Dropped`, so
the identity is a tautology that cannot fail on a real defect — only on a foreign
increment landing between its four separate `Interlocked.Read` calls. Hence the
reported subject, `counters.Received`. It is deleted, along with the `InFlight`
member, and replaced by direct assertions on the three MEASURED counters.

Three further defects in the same test, all found on the way:

- **The "held" dispatch loop was never held.** `OnDataChange` is `EventHandler<T>`
  — void-returning — so `async (_, _) => await gate` is async VOID: it returned to
  the dispatch loop at the first await and blocked nothing. Measured `Dispatched =
  2..3`, never 0. Drops happened only when the producer happened to outrun the
  consumer, so the arrangement the doc comment describes was fiction and the
  assertions rode on scheduling luck. Now a synchronous `ManualResetEventSlim.Wait()`
  on the loop's own thread, pinned by `Dispatched.ShouldBe(0)`.
- **Fixed `Task.Delay(150)`** replaced by a presence poll on the drop count (#500's
  rule). Dropped starts at 0, so it cannot be satisfied by the initial state.
- **Emission is staged** — one event, wait for the dispatcher to enter the handler,
  then the other nine — so the arithmetic is exact (`10 - 1 held - 2 buffered = 7`)
  rather than scheduler-dependent.

The gate release moved into `finally`, ahead of disposal: `DisposeAsync` awaits the
dispatch loop, which is now genuinely parked on that gate, so a failed assertion
would otherwise hang instead of failing.

Verified: 15/15 clean under the exact contention the issue measured (Runtime +
AdminUI + Core concurrently) — where the half-fixed version still failed on run 4.
Falsifiability: restoring the async-void handler turns the new assertions red.
2026-07-26 10:29:27 -04:00
Joseph Doherty e3155fbbf5 merge: never slice a DB-sourced string with the range operator (#504)
v2-ci / build (push) Successful in 4m11s
v2-ci / unit-tests (push) Failing after 14m22s
`@s.SourceHash[..12]` on an unvalidated nvarchar(64) threw out of
BuildRenderTree and took the whole /scripts page to an HTTP 500. Replaced with a
shared, null/short-safe `DisplayText.Abbreviate`, applied to all five unguarded
range-operator slices over DB-sourced strings in the AdminUI.

Live-verified on docker-dev: /scripts 500 -> 200 with the short hashes rendered
in full; long hashes still truncate with an ellipsis on the other pages.
2026-07-26 09:43:55 -04:00
Joseph Doherty 47d148daf9 fix(adminui): never slice a DB-sourced string with the range operator (#504)
`Scripts.razor` rendered a hash prefix as `@s.SourceHash[..12]…`. `SourceHash`
is a plain nvarchar(64) with no length floor, so any value shorter than 12
characters threw ArgumentOutOfRangeException out of BuildRenderTree — unhandled
in Blazor, which takes the WHOLE page to an HTTP 500, not just the offending
row. Live-reproduced on docker-dev, where two Script rows carry `h1` and
`h-abs-hr200`: /scripts was a hard 500.

New `Components/Shared/DisplayText.Abbreviate(string?, int)`:
- null/blank renders the Admin UI's em-dash placeholder rather than throwing;
- a value already within budget renders verbatim with NO ellipsis, so the
  display never implies text that isn't there (the old markup appended "…"
  unconditionally, outside the slice — `h1` would have shown as `h1…`);
- a maxLength < 1 is clamped, so a display bug cannot become a page crash.

Applied to every unguarded range-operator slice over a DB-sourced string found
by sweeping the AdminUI for `[..N]`:

  Scripts.razor                    SourceHash    (the reported crash)
  Certificates.razor               Thumbprint    (read off the on-disk store)
  Deployments.razor  x2            RevisionHash
  Clusters/ClusterOverview.razor   RevisionHash

The other `[..N]` hits are safe and untouched: Guid.ToString("N") slices
(always 32 chars) and the `Length > 60 ? [..60]` ternaries that self-guard.

NOTE — the issue text blamed the docker-dev seed; that was wrong and is
corrected on #504. `seed-clusters.sql` inserts only ServerCluster, ClusterNode
and LdapGroupRoleMapping. The short-hash rows came from earlier live-gate
authoring. A freshly seeded rig is fine; the trigger is any Script row that did
not go through ScriptEdit / UnsTreeService.HashSource — REST-API authored,
hand-inserted, or migrated in.

Tests: 14 new in DisplayTextTests, covering the short/null/blank/clamped cases
and a never-throws sweep over every value x budget combination. AdminUI suite
739/739.

Live-verified on docker-dev (AdminUI has no bUnit): /scripts 500 -> 200 across
both central nodes, rendering `hash=h1` and `hash=h-abs-hr200` in full;
/deployments still truncates 64-char hashes at 12 with the ellipsis;
/certificates and /clusters/MAIN unchanged.
2026-07-26 09:43:48 -04:00
Joseph Doherty 755ae1aa3f merge: re-assert non-normal scripted-alarm conditions after a (re)load (#487)
v2-ci / build (push) Successful in 4m21s
v2-ci / unit-tests (push) Failing after 3h14m40s
Closes the redeploy-reset gap on Part 9 scripted-alarm condition nodes — the
alarm analogue of the VirtualTag ReassertValue fix.

A full address-space rebuild re-materialises every condition node fresh, while
the engine's reload produces EmissionKind.None for an alarm whose state did not
change — so nothing wrote the node. Live-reproduced on docker-dev: a cleared-
but-still-UNACKNOWLEDGED alarm came back reporting acknowledged, dropping Retain
to false, so it vanished from ConditionRefresh entirely. The operator's
outstanding alarm silently disappeared from the alarm list on deploy.

ScriptedAlarmHostActor.ReassertConditionNodes now writes one AlarmStateUpdate
per alarm not in the Part 9 no-event position, sourced from the new
ScriptedAlarmEngine.GetProjections(). Node-only by construction — the projection
type carries no EmissionKind, so it cannot become an alerts row or a duplicate
historian record.

Live gate PASSED (pre-fix image vs. rebuilt, central-2): condition absent
pre-fix, present + Unacknowledged + Retain=True post-fix, stamped with its own
LastTransitionUtc; /alerts empty across two re-asserts with the panel proven
live by a real ACTIVATED transition.
2026-07-26 09:18:23 -04:00
Joseph Doherty 549c656489 fix(alarms): re-assert non-normal scripted-alarm conditions after a (re)load (#487)
A deploy that triggers a FULL address-space rebuild clears `_alarmConditions`
and re-materialises every condition node fresh — inactive, acked, confirmed,
unshelved. The engine reloads its persisted state and re-derives Active from the
predicate, so it ends up correct; but there is no transition to report, so
`LoadAsync` yields `EmissionKind.None` and `OnEngineEmission` drops it. Nothing
writes the node.

Live-reproduced on the docker-dev rig against the pre-fix image: an alarm that
had fired and cleared but was still UNACKNOWLEDGED came back from a rebuild
reporting Acknowledged with Retain=false — so it disappeared from
ConditionRefresh entirely, while the engine still held Unacknowledged. An
operator's outstanding alarm silently vanishes from the alarm list on deploy.

`ScriptedAlarmHostActor.ReassertConditionNodes` closes it. After each load it
reads the new `ScriptedAlarmEngine.GetProjections()` and sends one
`AlarmStateUpdate` per alarm NOT in the Part 9 no-event position.

Load-bearing properties:

- Node-only. It sends `AlarmStateUpdate` and nothing else — never the `alerts`
  topic, never the telemetry hub. `alerts` is the historization path, so a row
  per alarm per deploy would append a duplicate historian/AVEVA record every
  time anyone deploys. This is why it reads a projection rather than re-emitting:
  `ScriptedAlarmProjection` carries no `EmissionKind`, so there is nothing for
  the emission machinery — or a future refactor — to mistake for a transition.
  The issue's sketch said `GetState(alarmId)` + `LoadedAlarmIds`; that alone
  would have clobbered the node's severity and message, so the projection also
  carries the definition's severity, the resolved message template, and the
  last-observed worst-input quality.
- Only non-normal alarms. One in the no-event position already matches what the
  materialise built, so a never-fired alarm stays byte-identical to a deploy
  without this pass (including its Message, which the materialise seeds with the
  display name), and an all-normal deploy writes nothing at all.
- Timestamp is the condition's own `LastTransitionUtc`, not the deploy instant.
- No duplicate Part 9 events: `WriteAlarmCondition`'s delta-gate compares against
  the node's CURRENT state, so a re-assert onto a freshly materialised node is a
  genuine delta (fires once — correct, the rebuild reset what clients see) while
  one onto a surgically-preserved node is suppressed.

Tests: 6 new host tests + 6 new engine tests. Falsifiability checked by
disabling the call — 4 of the 6 host tests go red; the other 2 are absence
guards against an over-broad fix and pass either way by design.

Live gate (docker-dev, central-2, pre-fix image vs. rebuilt image):
- pre-fix: condition absent from ConditionRefresh after a rebuild;
- post-fix: present, Unacknowledged, Retain=True, stamped with its own
  LastTransitionUtc rather than the restart instant;
- /alerts stayed empty across two re-asserts, with the panel proven live by a
  real ACTIVATED transition immediately afterwards — no duplicate history.
2026-07-26 09:06:39 -04:00
Joseph Doherty 28c2866710 merge: Sql driver follow-ups #496/#497/#498 + the Runtime.Tests flake #500 (fix/sql-driver-followups)
v2-ci / build (push) Successful in 4m15s
v2-ci / unit-tests (push) Failing after 15m14s
Four commits closing the three follow-ups the Sql poll driver left behind, plus the
intermittent Runtime.Tests failure found while verifying them.

- #497 corrects 16 wrong OPC UA status-code constants across 6 drivers (the issue named
  3) and adds StatusCodeParityTests, a reflection guard checking every driver's
  hard-coded uint against the pinned SDK. That guard is what found the other 13.
- #498 fails the deploy when a Sql driver's persisted config carries a literal
  connectionString — the write-side half of a guarantee only enforced on read.
- #496 implements the design 8.1 catalog gate: authored table/column names are resolved
  against the live catalog at Initialize and replaced with the catalog's own spelling, so
  quoting becomes the backstop it was documented to be rather than the sole defence.
- #500 fixes the Runtime.Tests flake: four ordering/logic defects plus a class of tight
  presence budgets, now routed through a documented RuntimeActorTestBase.PresenceBudget.

Verified: full solution builds, all 41 unit-test projects green, Sql integration suite
21/21 against the real SQL Server on 10.100.0.35, and 30 consecutive Runtime.Tests runs
clean against a measured 13% baseline.

Still open by design: #499 (ClusterNode.DriverConfigOverridesJson is a third config
persistence surface DraftValidator cannot see) and #501 (two alarm-ack tests use
AwaitAssert for an absence assertion, so they prove nothing; the rewrite may
legitimately turn them red).
2026-07-25 22:27:26 -04:00
Joseph Doherty 154171f48c test(runtime): fix the intermittent Runtime.Tests failure — 4 ordering/logic defects + the presence-budget class (#500)
The reported symptom was "Runtime.Tests occasionally reports Failed: 1" with no test
name. Instrumenting 30 full-assembly runs reproduced it at 13% (4 runs) and showed it
was never ONE flaky test: five failures across three distinct tests in that batch, and
five more distinct tests over the verification rounds that followed.

Two hypotheses were tested and DISPROVED by measurement before anything was changed:

- Cluster-formation timeout. Every test in this assembly forms a real single-node Akka
  cluster over TCP in RuntimeActorTestBase's constructor and waits 5 s for MemberStatus.Up
  — 219 formations per run. Instrumented: idle max 960 ms, under-load max 1470 ms, zero
  timeouts. A 3.4x margin; not the cause.
- Ephemeral-port exhaustion from that bind churn. TIME_WAIT measured at ~0 throughout.
  Not the cause.

FOUR GENUINE ORDERING/LOGIC DEFECTS (none is a timeout):

1. VirtualTagHostActorTests.ApplyVirtualTags_respawns_child_when_plan_changes_in_place
   The test loops to accept RegisterInterest/UnregisterInterest in EITHER order — and
   then asserts on mux.LastSender, which DEPENDS on that order. Under the [Register,
   Unregister] interleaving LastSender is the DYING child and the assertion fails. Now
   captures the sender of the Register message as it arrives. Fully deterministic; no
   timing involved. (Swept the other four LastSender sites: all drain the Unregister
   first, so their ordering is fixed. Only this one was unsafe.)

2. DriverHostActorWriteRoutingTests.Primary_routes_write_via_uns_nodeid_to_driver_by_rawpath
   ApplyAck marks the end of the APPLY, not the point a write can succeed: the child is
   still in Connecting, which deliberately fast-fails writes ("driver not connected"),
   and the NodeId->driver reverse map has not been pushed. Now retries until accepted.
   This does not weaken the assertion — every rejection branch replies WITHOUT reaching
   the driver, so Writes.Count.ShouldBe(1) still means exactly what it did.

3. HistorianAdapterActorTests.Redundancy_snapshot_without_local_node_...
   One 500 ms constant served both presence budgets (AwaitAssert) and absence windows
   (ExpectNoMsg). Different quantities that happened to share a number, so the presence
   budget could not be raised without slowing every absence check. Split into
   AssertTimeout (5 s) and Settle (500 ms).

4. ContinuousHistorizationRecorderTests.Retry_after_writer_failure_eventually_acks
   Waited on `outbox == 0`, which is ALSO true before the first append — so the poll
   could win the race against the recorder and return having observed the INITIAL state,
   after which the CallCount>=2 check outside the block failed against a recorder that
   had not run. Both conditions are now polled together with the retry count as the
   discriminator. (The preceding test in the same file documents this exact trap.)

THE PRESENCE-BUDGET CLASS:

After those four, three consecutive 30-run rounds each still failed once — on a
DIFFERENT test, in a DIFFERENT file, every time (OpcUaPublishActorApplyFailureTests 2 s,
OpcUaPublishActorRebuildTests 2 s, OpcUaPublishActorTests 500 ms). That is a
distribution, not a defect, and fixing it one test at a time was the wrong method.

RuntimeActorTestBase now carries a documented PresenceBudget (15 s) and 57 sub-3 s
AwaitAssert/AwaitCondition durations across four files route through it.

Why this is safe rather than sloppy: a presence budget is an upper bound before giving
up, not a wait — these helpers poll and return the instant the condition holds. Raising
one costs nothing on the happy path and CANNOT make a genuinely failing assertion pass;
it only changes how quickly a real breakage reports. Absence windows are the opposite
(the elapsed time IS the assertion) and were deliberately left untouched with their own
short, individually-calibrated literals.

ScriptedAlarmHostActorTests is a special case, diagnosed rather than merely raised: its
8 s budget was sized for message passing but actually waits on a REAL Roslyn compile
(ApplyScriptedAlarms -> ScriptedAlarmEngine.LoadAsync compiles every predicate). Cold
script compiles are the slowest and most variable thing in the assembly, so that class
gets 30 s with the reason recorded.

Verification: 30 consecutive full-assembly runs, 30 passed / 0 failed, against a 13%
baseline. Full solution builds; all 41 unit-test projects green.

NOT fixed here, filed as #501: DriverHostActorNativeAlarmAckRoutingTests:90 and :116 use
AwaitAssert for an ABSENCE assertion, so they return instantly and prove nothing. They
are excluded from the budget change on purpose — a bigger number does not fix them, and
rewriting them to settle-then-assert may legitimately turn them red.
2026-07-25 20:20:06 -04:00
Joseph Doherty 4dc2ad8084 feat(sql): implement the design §8.1 catalog identifier-validation gate (#496)
Until now ISqlDialect.QuoteIdentifier was the SOLE defence for authored
table/column names: an identifier went from the TagConfig blob straight into a
command text, bracket-quoted. The residual risk was bounded — a hostile name is
quoted into one nonexistent object, the query fails after the connection opens,
and the tag Bad-codes — but "bounded" is not "filtered", and the design promised
a filter. Both ISqlDialect and SqlServerDialect carried a doc paragraph saying so.

SqlCatalogGate + SqlCatalogLoader now resolve every authored identifier against
the live catalog at Initialize, and REPLACE it with the catalog's own spelling.
The identifier text in an emitted poll query is therefore a string this driver
read back out of ListSchemas/ListTables/ListColumns — not operator input. Quoting
becomes the backstop it was documented to be.

Decisions worth knowing before touching this:

- Substitution, not just validation. Matching is exact-ordinal first, then a
  UNIQUE case-insensitive hit: SQL Server's default collation is CI so case
  variants have always worked, and rejecting them would break valid deployments.
  An ambiguous CI match under a case-sensitive collation is refused rather than
  guessed — picking one would publish another column's data under the operator's
  node, which is worse than rejecting the tag.

- Charset check BEFORE catalog lookup. Each identifier goes through
  QuoteIdentifier for its rejection rules first, so a name carrying a control or
  Unicode format character is rejected WITHOUT its value being echoed into a log
  line (Trojan-Source). A name that passes is safe to render, which is why
  catalog-miss messages do name it — an operator hunting a typo has to see what
  they wrote. Both halves are pinned by tests.

- A rejected tag keeps its node. It is dropped from the POLLED table but stays in
  the AUTHORED table, so it still materializes and reads BadNodeIdUnknown —
  §8.1's specified outcome. My first wiring dropped it from both, which deleted
  the node instead; an existing test (ReinitializeAsync_recoversFromFaulted)
  caught it. A status code can only be published by a node that exists, and a
  missing address-space entry is far harder to diagnose than a Bad quality.

- An unreadable catalog FAULTS Initialize; it does not reject every tag. That is
  the absence of evidence about the tags, not evidence against them — rejecting
  all of them would serve a confidently-empty address space and send the operator
  hunting typos that do not exist. Zero visible schemas is treated the same way,
  because that is exactly what a missing GRANT looks like. Faulting lands
  DriverInstanceActor in Reconnecting with its retry timer running.

- Bounded load: one schema list, one default-schema scalar, then one ListTables
  per distinct authored schema and one ListColumns per distinct authored relation
  — never a full catalog enumeration, and nothing after Initialize. Every
  authored name reaches the catalog queries as a bound @schema/@table parameter,
  so building the allow-list cannot itself be an injection vector.

- ISqlDialect gains DefaultSchemaSql ("SELECT SCHEMA_NAME()"). An unqualified
  `TagValues` must resolve in whatever schema the SERVER reports; hardcoding dbo
  would be a silent lie on any estate that maps service accounts to their own
  default schema. It is a query, not a constant, because the answer is
  per-connection.

- Accepted v1 limitation: a 3-part db.schema.table (or linked-server name)
  addresses a catalog this connection cannot enumerate, so it cannot be
  allow-listed and is rejected with a message pointing at the fix — expose the
  data through a view in the connected database.

VerifyLivenessAsync's wall-clock pattern is extracted to RunBoundedAsync and
reused, so the new I/O gets the same R2-01 / STAB-14 protection rather than a
second hand-rolled copy. (It also fixes a latent bug in the extracted code: the
OperationCanceledException arm detached the wrong task.)

Tests: 24 pure gate tests + 9 end-to-end driver tests against the real SQLite
catalog + 3 new live tests against the real SQL Server on 10.100.0.35 (21 in that
suite now pass, exercising the real SELECT SCHEMA_NAME() + INFORMATION_SCHEMA
path). Verified falsifiable: bypassing the gate turns exactly the three rejection
assertions red and leaves the rest green.

SqlInjectionRegressionTests is deliberately NOT rewritten to expect
BadNodeIdUnknown. It drives SqlPollReader directly, below the gate, and pins the
quoting backstop on its own — defence in depth is only worth the name if each
layer holds independently. Rewriting those assertions would delete the backstop's
only coverage and leave the gate a single point of failure. Its scope note, which
said the gate does not exist, is updated to say why it stays where it is.
2026-07-25 16:07:53 -04:00
Joseph Doherty 1919a8e538 feat(config): reject a persisted Sql connectionString at the deploy gate (#498)
The Sql driver's "a pasted literal connection string is never persisted" guarantee was
enforced only on the READ path: SqlDriverConfigDto has no connectionString property and
UnmappedMemberHandling.Skip drops the key on deserialization. Nothing stopped it being
WRITTEN. Config blobs are schemaless JSON columns and the fallback authoring pattern for
a driver without a typed form is a raw-JSON textarea, so an operator pasting
{"connectionString":"Server=...;Password=..."} would put a live credential in the
ConfigDb — persisted, replicated to every node's artifact cache, readable by anyone with
config access — while the runtime silently ignored it and the driver failed to connect.
Discarding a secret on read is not the same as refusing to store it.

DraftValidator.ValidateSqlConnectionStringNotPersisted fails the deploy
(SqlConnectionStringPersisted) when a Sql-typed driver instance's DriverConfig, or the
DeviceConfig of any device beneath it, carries a top-level connectionString key.

- Both surfaces are checked because DeviceConfig is merged onto DriverConfig before the
  DTO sees it — a credential pasted into the device blob is the identical leak.
- The key is matched case-insensitively: System.Text.Json binds ConnectionString to a
  connectionString property by default, so an ordinal match would leave the obvious
  bypass open.
- Only the top level is scanned; the DTO is flat, so a nested occurrence cannot bind and
  is not the mistake this rule exists to catch.
- The message never echoes the value — validation errors reach the AdminUI, the deploy
  log and the audit trail, and repeating the string there would leak the credential the
  rule is refusing to store. Pinned by a test.
- Malformed/blank/non-object JSON never throws: a parse failure would take down every
  other rule in the same pass.

16 tests. Verified falsifiable — with the rule disabled the 6 positive assertions fail
and the 10 negatives stay green, so none of them passes vacuously.

Design §8.2's "if an inline connectionString is ever permitted (dev convenience only),
the AdminUI redacts it" carve-out is withdrawn in the same change: redaction only hides a
credential that has already been written.

Not covered, and filed as a follow-up: ClusterNode.DriverConfigOverridesJson is a third
persistence surface for a driver config blob, but it is not part of DraftSnapshot, so
this validator cannot see it.
2026-07-25 15:37:48 -04:00
Joseph Doherty b95b99ba8e fix(drivers): correct 16 wrong OPC UA status-code constants + guard them by reflection (#497)
Every value verified against Opc.Ua.StatusCodes in the pinned SDK (1.5.378.106) by
reflection, not by copying siblings. All are client-visible: OPC UA clients branch on
status.

The three named in #497:
  - Historian.Gateway SampleMapper "BadNoData"  0x800E0000 -> 0x809B0000
    (0x800E0000 is BadServerHalted)
  - Galaxy "BadTimeout"                         0x800B0000 -> 0x800A0000
    (0x800B0000 is BadServiceUnsupported)
  - TwinCAT BadTypeMismatch                     0x80730000 -> 0x80740000
    (0x80730000 is BadWriteNotSupported)

BadTypeMismatch was wrong in three MORE drivers the issue did not name — FOCAS,
AbLegacy and AbCip carried the same 0x80730000. Every call site is a
FormatException/InvalidCastException conversion failure, so the name was right and
the value was wrong in all four.

Adding the reflection guard then surfaced nine further defects offline tests had
never checked:
  - Galaxy GoodLocalOverride  0x00D80000 -> 0x00960000  (not a UA code at all)
  - Galaxy UncertainLastUsableValue        0x40A40000 -> 0x40900000
  - Galaxy UncertainSensorNotAccurate      0x408D0000 -> 0x40930000
  - Galaxy UncertainEngineeringUnitsExceeded 0x408E0000 -> 0x40940000
  - Galaxy UncertainSubNormal              0x408F0000 -> 0x40950000
  - TwinCAT BadOutOfService   0x80BE0000 -> 0x808D0000 (was BadProtocolVersionUnsupported)
  - TwinCAT BadInvalidState   0x80350000 -> 0x80AF0000 (was BadAttributeIdInvalid)
  - AbCip/AbLegacy GoodMoreData 0x00A70000 -> 0x00A60000 (was GoodCommunicationEvent)
  - Historian.Gateway GatewayQualityMapper Good_LocalOverride 0x00D80000 -> 0x00960000

Galaxy's whole Uncertain block read as though the OPC DA quality byte could be
shifted into the UA substatus position; it cannot — the substatuses are an unrelated
enumeration. GatewayQualityMapper already held the correct table, which is what the
Galaxy values are now reconciled against.

Guard: StatusCodeParityTests (Core.Abstractions.Tests, which already project-
references every driver) reflects over every `const uint` in the deployed
ZB.MOM.WW.OtOpcUa.Driver.*.dll whose name reads as a status code, and asserts it
equals Opc.Ua.StatusCodes.<name>. Discovery is by convention, so a new driver
assembly referenced by that project is covered with no edit here. It went red on all
nine defects above before the fixes and now checks 109 constants green.

Because reflection can only see a NAMED constant, two inline literals were hoisted so
the guard can reach them: Galaxy's BadTimeout/Bad into StatusCodeMap, and
GatewayQualityMapper's 15-entry table into a new HistorianStatusCodes. An inline
`0x800B0000u, // BadTimeout` at a call site is exactly how the Galaxy defect survived.

The drivers stay SDK-free by design; only the test project references Opc.Ua.Core,
as the oracle.

Also corrected: tests that pinned the wrong values (Galaxy StatusCodeMapTests,
SampleMapperTests, GatewayQualityMapperTests — all written from the same bad source),
a mislabelled comment in DriverInstanceActorTests, and stale constants in two design
docs, one of them the unexecuted MTConnect driver design that would have propagated
BadNoData's wrong value into a new driver.

The CLI's SnapshotFormatter value->name table was checked against the SDK and is
correct; no change needed.
2026-07-25 15:34:31 -04:00
Joseph Doherty ee12568cab refactor(modbus-rtu): distinct CrcMismatch/UnitMismatch desync reasons
v2-ci / build (pull_request) Successful in 4m1s
v2-ci / unit-tests (pull_request) Failing after 13m33s
The RTU framer overloaded DesyncReason.TruncatedFrame for three distinct
failures — a genuine short read, a CRC-16 validation failure, and a
CRC-valid reply from the wrong RS-485 slave. Split the latter two into
dedicated CrcMismatch / UnitMismatch enum members so a future .Reason
consumer (metrics, operator diagnostics) can tell a wiring/EMI CRC fault
apart from a mis-addressed multi-drop reply. Behaviour is unchanged — all
three still throw ModbusTransportDesyncException and tear the socket down.

Framing tests now assert the specific Reason on each path.

Follow-up #12 from the Modbus RTU-over-TCP plan.

Claude-Session: https://claude.ai/code/session_01GASWkNEi68FSCtvr6rLoEW
2026-07-25 15:13:48 -04:00
Joseph Doherty d5bd4226ee docs(mqtt): Sparkplug P2 live-verified; MQTT driver complete
Task 26 — the P2 milestone gate. Ran the live /run verification on an isolated
docker-dev rig (project otopcua-mqtt, ports 9210/4850-4851/14350, image built
from this branch) against the real Mosquitto TLS+auth broker and the C#
Sparkplug edge-node simulator on 10.100.0.35, and recorded the result.

The gate found three defects. Two are the same defect class the P1 gate found
twice — a hand-maintained AdminUI surface left behind by a driver-side feature —
and the third is a pre-existing cross-driver bug that only a Sparkplug flow
could surface.

  1. CRITICAL, FIXED — MqttDriverForm still shipped its P1 Sparkplug PLACEHOLDER.
     Switching Mode to SparkplugB rendered a "not available yet" notice and NO
     Group ID field, so with Sparkplug ingest fully shipped there was still no
     way to author a Sparkplug driver from the AdminUI at all. Sparkplug.GroupId
     is the driver's entire subscription filter (spBv1.0/{GroupId}/#): blank ⇒
     connected, Healthy, ingesting nothing. Now authors all five Sparkplug keys,
     MERGES over the existing sub-object rather than replacing it (so a key a
     newer driver adds inside it survives an older AdminUI), leaves it untouched
     in Plain mode, and validates the group id as the topic segment it is.
     Pinned by 8 MqttDriverFormModelTests cases, verified falsifiable — 8 RED
     with the fix stubbed out.

  2. PRE-EXISTING + CROSS-DRIVER, FIXED — every node label in the shared
     DriverBrowseTree was an <a href="#">. In a Blazor Web App, blazor.web.js's
     enhanced-navigation click interceptor resolves a bare "#" against
     <base href="/">, so clicking ANY browse-tree node label navigated the whole
     AdminUI to "/", tore down the circuit, and destroyed the hosting modal —
     losing the browse session AND the tag selection. @onclick:preventDefault
     does not help: it suppresses the browser's default action, not Blazor's own
     interceptor. Labels are now <button type="button">. Dates to the component's
     introduction (2026-05-28) and affects EVERY driver's picker; it surfaced
     only now because choosing a rebirth scope is the first flow that requires
     clicking a label rather than the ▶ toggle (always a button, always fine).

  3. FIXED (mitigation) — the browse tree rendered exactly once, at open, and
     never again, while OpenAsync returns as soon as the SUBSCRIBE is granted.
     On Sparkplug that means it is almost always empty forever, because births
     are never retained. Added a Refresh button that re-reads the root against
     the SAME session (nothing reconnects, nothing observed is lost, the tag
     selection is kept, only the armed rebirth scope is cleared).

Live gate result (all against the real broker + simulator, group OtOpcUaSim):

  - driver authored end-to-end through the fixed MqttDriverForm; blob is
    Mode:SparkplugB + Sparkplug.GroupId:OtOpcUaSim with enums as names
  - browse: BROWSER OPEN chip, Sparkplug-only rebirth panel, tree renders
    Group → EdgeNode → [Device] → Metric with the device folder Filler1 and
    node-level metric leaves SIDE BY SIDE, and "Node Control/Rebirth" as ONE
    leaf (the metric-name-is-not-a-topic-segment rule holding)
  - rebirth: group scope names the group + the 32-node cap, Cancel published
    NOTHING (simulator log unchanged); edge-node scope → "1 command published"
    and the simulator logged "rebirth NCMD #1 received; republishing metadata";
    group scope → "2 commands published", both edge nodes re-birthed; a device
    and a metric both resolve UP to "edge node EdgeA"; the panel does NOT render
    for a Plain MQTT device
  - browse-commit wrote bindable tuples with no topic/address key —
    {"groupId","edgeNodeId","metricName","deviceId"} for the device metric and
    deviceId ABSENT (not blank) for the node-level one, datatypes inherited from
    the birth (Int64 / Float)
  - deployed (Sealed), and both nodes served live changing values through OPC UA
    at the 2 s cadence — Good 0x00000000, no BadNodeIdUnknown
  - death→STALE: stopping the simulator drove both nodes to 0x80000000 with an
    empty value ~2 s later, and restarting it recovered them to Good on the new
    birth (FillCount back to its birth-declared 1000, then counting)
  - rediscovery fired exactly TWICE (once per authored scope: OtOpcUaSim/EdgeA
    7 metrics, OtOpcUaSim/EdgeA/Filler1 3 metrics) and was then gated across
    many subsequent births/rebirths — the anti-storm change gate working, and
    EdgeB correctly filtered out as an unauthored scope
  - tag editor: opens in SparkplugB (mode inference on reopen) with all four
    descriptor fields populated; blank group → "A Sparkplug group ID is
    required."; "Plant/1" rejected; "Node Control/Rebirth" ACCEPTED and saved
    with the slash whole; dataType override persists and its key is ABSENT again
    after selecting "(from birth certificate)"

Two things are NOT verified, and are recorded rather than claimed:

  - Rediscovery is INERT in v3 and this is a platform gap, not an MQTT one:
    nothing subscribes to IRediscoverable.OnRediscoveryNeeded and
    DriverHostActor.HandleDiscoveredNodes hard-returns. A DBIRTH introducing a
    metric does NOT change the OPC UA tree; redeploy. Verified from the driver's
    log line only, exactly as far as it can be verified.
  - A metric name containing "/" cannot be BROWSE-COMMITTED: the derived raw tag
    Name is a RawPath segment and may not contain "/", so the spec-mandatory
    "Node Control/Rebirth" is refused ("Row 3: Name must not contain '/'"). The
    refusal is loud and all-or-nothing, never a silently mis-bound tag, and
    Manual entry is the working path. Fixing it needs a name-sanitisation policy
    with a collision answer, so it was recorded rather than guessed at.

Also left open + documented: an empty browse tree cannot arm a rebirth (the
scope comes from a tree click, and the session side already accepts a bare
{group}/{edgeNode} — only a UI path is missing); _canRebirth is captured at
browse-open; the tag editor injects the Plain-only payloadFormat key into a
Sparkplug blob (cosmetic — the factory routes on the tuple).

Suites: offline 1528 passed / 0 failed (581 Driver.Mqtt + 809 AdminUI + 138
Core.Abstractions); live 15/15 against the broker + simulator.

Docs: docs/drivers/Mqtt.md brought fully up to date for P2 (Sparkplug config
sub-object, both tag shapes, the ingest state machine, rediscovery, browse +
rebirth + Refresh, a Known-gaps table); Mqtt-Test-Fixture.md gains the simulator
and drops its "Sparkplug has no fixture" claims; infra/README.md §3 gains the
simulator row; CLAUDE.md gains the simulator endpoint facts; the tracking doc
marks MQTT/Sparkplug COMPLETE. docker-dev/docker-compose.mqtt.yml is the
isolated-rig overlay the gate ran on.

Claude-Session: https://claude.ai/code/session_01GASWkNEi68FSCtvr6rLoEW
2026-07-25 01:11:56 -04:00
Joseph Doherty 8d9155682d fix(mqtt): browse-commit writes a bindable address + a Request-rebirth affordance
Two gaps the Task 23/24 review found, both blocking Task 26's live gate.

Gap 1 — browse-commit produced a silently dead MQTT tag. RawBrowseCommitMapper
had no `Mqtt` case, so a committed leaf fell through to the generic
`{"address": …}` key. Neither MqttTagDefinitionFactory entry point reads
`address`: the tag deployed clean and reported BadNodeIdUnknown forever, with
no signal at commit time. Predates Task 23 (Plain was affected too), but Task 23
built the Sparkplug metric tree precisely so an operator could browse and commit
a binding.

The address is a DESCRIPTOR, not a reference string, and it cannot be recovered
from the browse node id: `{group}/{node}[/{device}]::{metric}` where a metric
name legitimately contains `/` (`Node Control/Rebirth`) — the ambiguity
MetricSeparator's remarks already name. So the session STATES it, via a new
`AttributeInfo.AddressFields` seam, and the mapper reads it. Which keys are
emitted is also how the mapper learns Plain vs Sparkplug — the driver type
reaching it is just `Mqtt`, and the mode lives on the driver config. Key names
are single-sourced in the new `MqttTagConfigKeys` (producer, mapper, factory),
with the literals pinned by a test so a symmetric rename cannot silently unbind
already-persisted blobs. A leaf with no stated address is refused at commit in
words rather than committed dead.

Gap 2 — RequestRebirthAsync had no UI. Task 23 shipped it backend-only; Task 26
step 1 assumes the button, and Task 25's runbook notes the picker tree stays
empty until a birth lands, so it is the only way to fill it on demand. Added to
the /raw browse modal: scope = the clicked tree node (device/metric resolve up to
their edge node, group fans out and is refused whole past 32), an explicit
two-click confirm naming the resolved scope and its consequence, the outcome or
the refusal shown rather than swallowed. Offered only for a Sparkplug session
(new `IRebirthCapableBrowseSession.RebirthAvailable` — one session class serves
both modes, so a type test alone would draw a button that can only throw) and
only to a DriverOperator; the server-side gate remains the boundary.

Tests: MQTT 545 → 581, AdminUI 781 → 800. The round-trip tests feed the emitted
blob to the REAL factory and were falsified by mutating the emitted key name.

Claude-Session: https://claude.ai/code/session_01GASWkNEi68FSCtvr6rLoEW
2026-07-24 23:43:07 -04:00
Joseph Doherty 767e7031b3 test(mqtt): C# Sparkplug edge-node simulator + §3.6 live matrix
Adds a project-owned, controllable Sparkplug B edge node (SparkplugEdgeNode) that
encodes with the SAME generated Tahu schema the driver decodes with — so the live
gate checks encode/decode symmetry rather than the driver against itself — and
drives the §3.6 matrix end-to-end over the real TLS+auth Mosquitto fixture.

The simulator frames its topics independently of SparkplugTopic.Format: a
simulator borrowing the parser's formatter could not detect a bug in it, because
both sides of the comparison would be wrong together. It registers a real NDEATH
Last Will at CONNECT, restarts seq at 0 on NBIRTH, publishes DATA metrics as
alias-only, carries bdSeq per session, and encodes signed ints as two's
complement in the unsigned proto field.

SparkplugLiveTests (Category=LiveIntegration, env-gated, skip-clean) covers:
birth -> alias-only data -> OnDataChange under the RawPath; late-join rebirth
NCMD honoured by an independent decoder; alias reuse across a rebirth routing by
metric NAME; a stale-bdSeq NDEATH ignored while the current one stales; the real
broker-published Will staling and the next birth restoring; seq wrap 255->0
requesting no rebirth while a deliberate gap does; and the browser's passive
window asserted ON THE WIRE (a third client watching spBv1.0/{group}/NCMD/#),
plus RequestRebirthAsync node-vs-group enumeration.

Two things make the suite falsifiable rather than decorative: the seq-wrap test
builds its ingestor with rebirthDebounce: TimeSpan.Zero (at the shipped 10s
default a wrap-triggered NCMD would be swallowed and the test would pass for the
wrong reason) and pairs the silence with a deliberate gap that must produce one;
and the passivity assertion observes the broker rather than the session's own
publish counter, which can only see the seam it guards.

Docker/docker-compose.yml gains a profile-gated `sparkplug-sim` service running
the same engine standalone against the same broker (TLS, CA-pinned) — a manual
driving aid for the AdminUI picker, deliberately NOT a test dependency, since the
matrix needs an edge node it can command mid-test. Its app directory is publish
output (publish-simulator.sh), gitignored like secrets/.

Offline: 15 skipped, 0 failed with no env set. Live: 15/15 passed against
10.100.0.35:8883. Falsifiability spot-check: mutating AliasTable.RebuildFromBirth
to merge instead of replace, and neutering SparkplugCodec.ReinterpretSigned for
Int32, turned exactly the two corresponding tests red and nothing else; both
mutations reverted.

Claude-Session: https://claude.ai/code/session_01GASWkNEi68FSCtvr6rLoEW
2026-07-24 23:18:08 -04:00
Joseph Doherty 64ec7aa43a feat(mqtt): Sparkplug birth-driven browser tree + scoped Request-rebirth action
Unseals the Sparkplug branch of the MQTT address-picker browser that Task 10
deliberately sealed shut, and adds the first (and only) sanctioned publish on a
browse session.

- MqttBrowseSession serves Group -> EdgeNode -> [Device] -> Metric in Sparkplug
  mode, decoded from observed NBIRTH/DBIRTH certificates (the only Sparkplug
  messages that name their metrics). Node-level metrics hang directly under
  their edge node -- no synthesised device folder, because the authored address
  tuple genuinely has deviceId = null for them. Metric node ids use a '::'
  separator: a metric name may contain '/', so slash-joining would make a
  node-level metric indistinguishable from a device folder.
- AttributesAsync is purely birth-derived in Sparkplug mode. The plain path's
  UTF-8 inference / payload-snippet machinery does not run and no payload bytes
  are retained: a Sparkplug body is protobuf and would be reported as
  "(N bytes, binary)" for every metric in the plant. A datatype ToDriverDataType
  cannot map is reported as the Sparkplug type name, never coerced.
- RequestRebirthAsync(scope) is the one publishing member, reached only by an
  explicit operator action. It routes through the counted PublishAsync
  chokepoint via a private RebirthTransport adapter, so PublishCountForTest
  still proves that OpenAsync/RootAsync/ExpandAsync/AttributesAsync/Observe/
  DisposeAsync publish nothing -- now in both modes. A device or metric scope
  resolves up to its owning edge node (NCMD is node-addressed); group scope
  enumerates observed edge nodes and is refused whole past
  MaxGroupRebirthNodes = 32.
- BrowserSessionService.RequestRebirthAsync gates on the same DriverOperator
  policy that gates the picker, evaluated server-side where the action happens
  rather than only at render time, fails closed, and Info-logs the scope and the
  published count. Exposed through the new IRebirthCapableBrowseSession contract
  so "does this session write?" stays a type question.
- ToBrowseOptions' Last-Will landmine re-verified: MqttDriverOptions still
  carries nothing will-shaped (an NDEATH is a broker-published will and would be
  invisible to PublishCountForTest), now pinned by a reflection guard.

Falsifiability: injecting a publish into RootAsync reddens the Sparkplug and
plain passivity tests; double-publishing per target reddens all four
one-NCMD-per-node assertions. 572/572 MQTT tests, 24/24 AdminUI browsing tests.

Claude-Session: https://claude.ai/code/session_01GASWkNEi68FSCtvr6rLoEW
2026-07-24 22:51:16 -04:00
Joseph Doherty 6d7a458c4d fix(mqtt): reset Sparkplug ingest state at every session/authoring seam
Task 21 review — two Criticals sharing one root cause, plus four follow-ups.

C1/C2 root cause: `OnReconnectedAsync` opened with `Births.Clear(); _trackers.Clear();`
— "not housekeeping, the correctness step" — and that reset was missing from the
other two seams where the view underneath a surviving cache changes.

- C1: the ingestor OUTLIVES a session rebuild. `SessionIdentity` is a strict
  superset of `IngestIdentity`, so changing only Host/Port/ClientId/credentials/
  TLS/a timeout gives `!SameSession && SameIngest` — `ReinitializeAsync` tears the
  session down and re-establishes on the same instance, and `TeardownAsync` touches
  no ingest state (the resilience layer re-running `InitializeAsync` is the second
  path). A node that rebound alias 5 during the changeover would publish Pressure's
  value under the Temperature RawPath at Good. Hoisted into `ResetSessionState`,
  called from `AttachTo` (earliest seam — a persistent session can push between
  CONNACK and our SUBSCRIBE), `EstablishAsync` and `OnReconnectedAsync`.
- C2: `Register` pruned trackers but not births. While a node is unauthored its
  traffic is dropped at `Dispatch`, so its cached birth FREEZES rather than
  refreshing; drop-then-re-add across a week mis-routes at Good, and `Births` grew
  monotonically. Now evicted on edge-node departure.
  Deliberately NARROWER than "absent from ByScope": a device with no authored tags
  under a still-authored node keeps receiving traffic, so its birth is live, not
  frozen — evicting it would discard correct state. Pinned both ways.

- I1: a birth whose seq is unreadable produced a permanent debounce-paced rebirth
  loop. "A birth arrived" is now tracked separately from "the birth established a
  baseline". Writing the test showed the cap belonged wider than the review scoped
  it: data-before-birth and unknown-alias loop identically (20 messages → 23 NCMDs
  against a cap of 3), so all three missing-metadata reasons share one per-node
  consecutive cap, re-armed by any applied birth. A seq gap stays uncapped — it
  self-limits.
- I2: the oversize `WarnOnce` key was the raw topic, off a group-wide `#`
  subscription. `HandleMessage` now parses and filters to authored nodes BEFORE the
  size check (also skipping the protobuf parse for discarded traffic), and `_warned`
  carries a hard ceiling so a future bad derivation degrades to silence.
- I3: array metrics slipped the unsupported-type gate — `ToDriverDataType` returns
  the ELEMENT type, so a String-typed tag published a packed `byte[]` as base64 at
  Good. Gated on `IsSparkplugArray`.
- I4: driver-level Sparkplug coverage for the composition-root lines T22 left
  untested — the `OnDataChange` re-raise, `ReadAsync` off the shared cache,
  subscribe/unsubscribe dispatch, and both directions of the mode gate.

Minors: M1 the oversize test fed unparseable bytes and passed with the size check
deleted (now a real NBIRTH + an at-the-ceiling control); M2 answered in-place (an
absent seq is refused WITHOUT becoming the baseline, so the NCMD assertion is the
complete check); M3 `HostStateObserved` raise wrapped; M5 the legacy `STATE/{host}`
form is now subscribed, so the parser's tolerance is reachable in production; M8
`ResolveBinding` prefers the NAME over a disagreeing alias; M9 a narrowing float
conversion refuses instead of publishing ±Infinity at Good (a publisher's own
infinity still passes through). M4 was already resolved by T22.

Also fixed a race in the new tests: `publish.Topics.Clear()` after a call that
dispatches rebirths off-thread must drain first — it made the C1 sequence-baseline
pin pass vacuously in the first falsifiability run.

Falsifiability: dropping the reset from AttachTo+EstablishAsync reddens 4 (C1);
dropping the Register eviction reddens 2 (C2); widening the eviction predicate to
the reviewer's literal phrasing reddens the keep-live-births pin (C2b). 545/545 MQTT
unit tests green (was 524); whole-solution `--no-incremental` build clean under TWAE.

Claude-Session: https://claude.ai/code/session_01GASWkNEi68FSCtvr6rLoEW
2026-07-24 22:44:43 -04:00
Joseph Doherty cd0157a3b8 feat(mqtt): typed tag editor Sparkplug mode + validation
Task 24 (P2): replaces the P1 Sparkplug Validate() stub (always null) and the
"not available yet" editor placeholder with real groupId/edgeNodeId/deviceId/
metricName authoring, mirroring MqttTagDefinitionFactory.FromSparkplugTagConfig
in both directions -- required ids + optional deviceId, dataType/qos read
strictly but only when present (dataType is optional: the birth certificate
declares it). One rule is deliberately stricter than the factory: group/edge-
node/device ids reject '/', '+', '#' (topic-segment characters a decoded
incoming id can never carry, so an authored one that does can never bind);
metricName is exempt since Sparkplug's own canonical names use '/' (e.g.
"Node Control/Rebirth"). No FullName key is written -- TagConfig carries no
identity under v3, and the plan's snippet asking for one was corrected per the
brief. A SparkplugB tag now survives save/reopen because its descriptor keys
re-infer Mode on load; there was never a 'mode' key to persist.

Claude-Session: https://claude.ai/code/session_01GASWkNEi68FSCtvr6rLoEW
2026-07-24 22:43:44 -04:00
Joseph Doherty 6917d8805d feat(mqtt): Sparkplug UntilStable discovery + rediscover-on-DBIRTH
RediscoverPolicy is now mode-dependent: UntilStable in Sparkplug B (a tag's
dataType is optional -- the birth certificate declares it, so the discovered
tree fills in asynchronously), Once in Plain (nothing about the authored set
arrives on the wire).

DiscoverAsync resolves each Sparkplug tag's datatype per pass from the live
BirthCache, with the ingest path's own precedence: authored dataType wins,
else the birth's, else the record default. An unsupported Sparkplug type
(DataSet/Template/PropertySet/Unknown) falls back rather than blanking the
tag. The authored tag SET is never conditional on a birth -- an authored tag
is part of the declared configuration, not something the plant grants by
publishing.

SparkplugIngestor.BirthObserved is wired to RaiseRediscoveryNeeded behind a
two-part change gate, which is the anti-storm mechanism rather than an
optimisation: fire only for a scope an authored tag binds, and only when the
birth's metric-name SET (ordered-distinct, ordinal) differs from the last one
seen for that scope. Edge nodes re-birth freely -- on their own timer, on
every reconnect via the late-join rebirth fan-out, and once per rebirth NCMD
the gap policy sends -- and firing on each of those would make a healthy plant
a permanent address-space-rebuild loop. No extra debounce: what survives the
gate is a real edit to the served tree, and delaying it would need its own
trailing-edge flush to avoid dropping the last change.

The signature map is NOT cleared on death/reconnect/ingest rebuild (the
ingestor drops its whole birth cache on reconnect, but "the driver forgot" is
not "the address space changed"); it is pruned when a redeploy stops
authoring a scope.

ScopeHint is the "Mqtt" discovery folder, deliberately not the Sparkplug scope
path the plan named: the discovered tree is flat, so an edge-node/device path
would name a subtree that does not exist and a consumer scoping a rebuild on
it would rebuild nothing. The scope is carried in Reason instead.

Falsifiability: always-fire reddens the identical-rebirth + reordered-rebirth
pins; always-authored-datatype reddens the birth-fill pin; dropping the
authored-scope filter reddens the unauthored-device pin. 524/524 MQTT unit
tests green (was 513).

Claude-Session: https://claude.ai/code/session_01GASWkNEi68FSCtvr6rLoEW
2026-07-24 22:28:08 -04:00
Joseph Doherty 8538fb798b feat(mqtt): Sparkplug ingest state machine (birth/alias/seq/rebirth/death→stale)
Task 21 — the design doc's §3.6 correctness core. `SparkplugIngestor` owns the
authored `(group, node, device?, metric) → RawPath` index, the live `BirthCache`,
one `SequenceTracker` per authored edge node, and the rebirth policy; it routes
NBIRTH/DBIRTH/NDATA/DDATA/NDEATH/DDEATH/STATE into `OnDataChange` +
`LastValueCache`, or into a bounded, per-node-debounced rebirth NCMD.

Invariants held (and each pinned by a falsifiability control):
- Published reference is the RawPath, never a composed Sparkplug reference —
  `DriverHostActor`'s dual-namespace fan-out is RawPath-keyed.
- Tags bind by stable metric NAME; the alias is only the per-birth lookup, so an
  alias reused across a rebirth cannot mis-route.
- Every value goes through `SparkplugMetricBinding.Reinterpret` before publish.
- NDEATH never reaches `SequenceTracker.Accept` (it carries no seq); it is tied to
  its birth by bdSeq instead.
- An invalid payload mutates nothing — no tracker, no alias table, no eviction.
- `HandleMessage` never throws on MQTTnet's dispatcher thread.

Supporting changes:
- `MqttTagDefinitionFactory.FromSparkplugTagConfig` — the driver had no way to
  parse the Sparkplug descriptor keys at all; the P1 stub fields on
  `MqttTagDefinition` were never populated. Mode selects the parser, never a
  blob heuristic. `dataType` becomes optional in the Sparkplug shape (the birth
  declares it), recorded via the new `DataTypeAuthored` flag.
- `MqttConnection` implements `IMqttPublishTransport` (bounded, refusal throws).
- `MqttDriver` dispatches every capability by mode, subscribes `spBv1.0/{group}/#`
  (+ the configured STATE topic) once at connect, and re-subscribes + requests a
  late-join rebirth on reconnect. `IngestIdentity` now names `MqttSparkplugOptions`,
  closing the silent same-ingest gap its own ⚠️ comment warned about.

Primary-host STATE *publishing* is explicitly out of scope and warned about at
construction: it needs the retained-OFFLINE Last Will set at CONNECT time, and
shipping the ONLINE half alone is worse than shipping neither.

58 new tests (MQTT suite 455 → 513, all green).

Claude-Session: https://claude.ai/code/session_01GASWkNEi68FSCtvr6rLoEW
2026-07-24 22:11:41 -04:00
Joseph Doherty 31a98a1bf5 feat(mqtt): RebirthRequester NCMD encode
Claude-Session: https://claude.ai/code/session_01GASWkNEi68FSCtvr6rLoEW
2026-07-24 21:40:43 -04:00
Joseph Doherty 3fdf24659f fix(mqtt): AcceptBirth is NBIRTH-only -- a DBIRTH routed there wipes bdSeq
Self-review of the commit before this one caught a defect in the contract it
published rather than in the code it ran. AcceptBirth's doc said it records
"a birth (NBIRTH/DBIRTH)". That is wrong on both halves of this type, and the
wrong version plants exactly the defect the bdSeq tie exists to prevent.

Only the NBIRTH restarts the Sparkplug sequence; a DBIRTH carries the next
number in the edge node's ongoing stream, so it belongs to Accept. And only
the NBIRTH and NDEATH carry bdSeq at all -- a DBIRTH has none to pass. So a
Task 21 that followed the old doc and routed a DBIRTH to AcceptBirth would do
two wrong things at once: rebase the sequence mid-stream, and wipe the node's
session token to null. A stale Last Will arriving afterwards would then find
nothing to compare against, fall through the deliberate fail-toward-stale
rule in IsDeathForCurrentSession, and kill the live node.

Renamed AcceptBirth -> AcceptNodeBirth so the DBIRTH call site reads wrong at
a glance rather than only in prose, documented the hazard on both methods,
and added DeviceBirth_ContinuesTheNodeSequence_AndLeavesTheSessionTokenAlone
to pin the shape at this type's own boundary -- the ingest state machine now
has something to fail against if it wires the call sites the other way round.

Falsifiability: mutating Accept to clear _birthBdSeq reddens exactly the new
test (1 RED), reverted. 29 tests, 438/438 for the MQTT suite.

Claude-Session: https://claude.ai/code/session_01GASWkNEi68FSCtvr6rLoEW
2026-07-24 21:32:44 -04:00
Joseph Doherty e4e313cf1c feat(mqtt): SequenceTracker seq-gap + bdSeq death-tie
SequenceTracker (Driver.Mqtt/Sparkplug/) holds one edge node's Sparkplug
stream-continuity state -- design doc SS3.6 invariant #3. Two independent
halves: the wrapping 0-255 seq counter that reports whether a message was
missed, and the bdSeq session token that ties an NDEATH to the NBIRTH it
belongs to.

Next-expected is (last + 1) & 0xFF, so 255 -> 0 is the sequence continuing.
The boundary is the whole task because it fails differently in each
direction: read the wrap as a gap and every edge node is asked to rebirth
once per 256 messages, so a busy node spends its life republishing births
instead of data; miss a real gap and the driver serves values it knows are
behind the device, at Good quality, indefinitely. Both directions are
asserted, plus two full wrap cycles so an off-by-one that only misfires at
one value has nowhere to hide.

A gap is reported once and the tracker then resynchronizes onto the observed
value -- holding the baseline at the pre-gap number would make every
following message report a gap too, so one lost message would become a
permanent rebirth storm, the same pathology as a wrong wrap reached by a
different route.

An out-of-range seq is refused, never masked. The codec hands seq over as a
ulong precisely so a spec-violating publisher's value is not truncated into a
plausible-looking one, and masking would finish the job it declined to do:
with the baseline at 255, a seq of 256 masks to 0 -- exactly what the wrap
expects next -- and the bogus message would be accepted as contiguous.
Refused values do not become the baseline either, so the next genuine message
is still measured against the last credible one.

A birth restarts the sequence via AcceptBirth rather than Accept, so it is
never itself a gap; a gap after a birth is still detected. An in-range but
non-zero birth seq is adopted rather than refused -- refusing it would demand
a fresh rebirth for every message from an otherwise-followable publisher. The
first message on a virgin tracker cannot be a gap (nothing to measure it
against) but leaves IsBirthSynchronized false, which is how Task 21 tells a
mid-stream late join from a synchronized node.

bdSeq exists to stop a late Last Will from killing a live node: a node's
connection drops, it reconnects and publishes a fresh NBIRTH, and only then
does the broker notice the old connection died and deliver its will carrying
the PREVIOUS session's bdSeq. Without the compare that stale NDEATH drives
every tag of a freshly-born healthy node to Bad. Unknowns fail toward stale
deliberately -- only a positive mismatch of two known tokens discards a
death, because acting on a death wrongly self-corrects at the next birth
(invariant #4) while ignoring a real one leaves a dead node's values flowing
Good forever. bdSeq is not a top-level field, so TryReadBdSeq extracts it
from the metric named bdSeq and runs it through ReinterpretSigned first: read
raw, a negative Int64 bdSeq becomes an enormous ulong -- a plausible-looking
session token minted out of nonsense.

Falsifiability verified, each mutation reverted after observing RED:
(a) no-wrap expected -> 2 RED; (b) Accept always true -> 5 RED; (c) bdSeq
compare always matches -> 2 RED; (d) mask out-of-range seq into range ->
2 RED. 28 tests, 437/437 for the MQTT suite.

Claude-Session: https://claude.ai/code/session_01GASWkNEi68FSCtvr6rLoEW
2026-07-24 21:29:08 -04:00
Joseph Doherty 2afef00eaa feat(mqtt): AliasTable/BirthCache — bind-by-name, rebuild-per-birth
Design §3.6 invariants #1/#2. A Sparkplug alias is scoped to ONE birth: after a
rebirth an edge node may point alias 5 at a different metric. So authored tags
bind by the stable metric NAME and the alias is a per-birth cache only —
RebuildFromBirth builds both indexes fresh and publishes them in one assignment,
never merging or upserting, including for an empty birth (which legitimately
clears the scope).

BirthCache keys scopes by the full (group, edgeNode, device?) triple and applies
the spec's node→device rules: an NBIRTH invalidates every DBIRTH under that node
(returning their metric sets for the STALE fan-out), a death evicts rather than
blanks so data-before-rebirth stays detectable. Reads are lock-free on MQTTnet's
dispatcher thread — an immutable snapshot swapped atomically per scope, the same
discipline MqttSubscriptionManager.AuthoredTable uses, with rebuilds landing in
place so a held table reference always observes the newest birth.

Running values are deliberately NOT stored here — LastValueCache owns those,
keyed by RawPath. SparkplugMetricBinding.Reinterpret exposes the birth datatype
to the codec's two's-complement fix, since a DATA metric carries no datatype.

Falsifiability: mutating RebuildFromBirth to merge reddened 5/19 tests (both
plan invariants); making the alias carry metric identity across a birth reddened
3/19, including the headline alias-reuse case.

Claude-Session: https://claude.ai/code/session_01GASWkNEi68FSCtvr6rLoEW
2026-07-24 21:28:41 -04:00
Joseph Doherty b245f380b1 feat(mqtt): Sparkplug topic parse/format + datatype map
SparkplugTopic (Driver.Mqtt/Sparkplug/) parses/formats spBv1.0 topics for
every message type (NBIRTH/DBIRTH/NDATA/DDATA/NDEATH/DDEATH/NCMD/DCMD/STATE).
TryParse never throws -- it is fed every topic a live spBv1.0/{group}/#
subscription delivers -- and rejects device/node-scope mismatches and MQTT
wildcard chars in a segment. STATE is handled honestly rather than force-fit
into the {group}/{type}/{node} mould: it parses both the v3.0
spBv1.0/STATE/{hostId} form and the legacy no-prefix STATE/{hostId} form
(tolerated on receive only -- Format/FormatState always emit v3.0). Format
gives Task 20's NCMD/DCMD write path a builder instead of hand-concatenation.

SparkplugDataType is a `global using` alias for the vendored proto's
generated Org.Eclipse.Tahu.Protobuf.DataType, not a second hand-duplicated
enum -- Metric.Datatype is a raw wire uint32 (no enum-typed field forces a
second CLR type to exist), and SparkplugCodec (Task 16, landed concurrently)
already casts straight to the generated type. A duplicate enum would be the
same enum-drift hazard this repo already names systemic (CLAUDE.md's driver
enum-serialization bug) and would force every downstream task to cast
between two value-compatible-but-nominally-different enums. ToDriverDataType()
maps per design doc SS3.5: Int8/UInt8 widen to Int16/UInt16 (no 8-bit
DriverDataType member), Float/Double to Float32/Float64 (there is no
DriverDataType.Double), Text/UUID/Bytes/File to String, *Array variants to
their element type (IsSparkplugArray carries the array bit separately), and
DataSet/Template/PropertySet/PropertySetList/Unknown return null -- an
explicit "unsupported, caller must skip+warn" rather than a guessed String.

The completeness test enumerates the live generated DataType member set
(via the alias) and asserts every member is mapped or on the explicit
unsupported list, so a future Tahu proto change is caught automatically
instead of silently falling through a stale duplicate enum's default.
Falsifiability verified by hand for three defect shapes (each reverted after
observing RED): wrong Int8 widening, a dropped mapping falling through
undetected, and inverted node/device topic scoping.

Claude-Session: https://claude.ai/code/session_01GASWkNEi68FSCtvr6rLoEW
2026-07-24 21:16:02 -04:00
Joseph Doherty c164ec3da1 fix(mqtt): SparkplugCodec's never-throw guard must span the projection too
The try/catch stopped at Payload.Parser.ParseFrom, leaving the metric-projection
loop outside it — so the "never throws for any input" contract had a hole in
exactly the part that walks an attacker-shaped object graph. Widened to cover
parse AND projection.

Self-review finding; no test reddened, because a projection escape needs a
generated-code shape the vectors do not produce. That is the point: the guard is
the contract, not the observed behaviour of today's inputs.

Claude-Session: https://claude.ai/code/session_01GASWkNEi68FSCtvr6rLoEW
2026-07-24 21:10:20 -04:00
Joseph Doherty 2589774480 feat(mqtt): SparkplugCodec decode + golden payload vectors
Decodes Sparkplug-B wire bytes into a driver-side projection (SparkplugPayload /
SparkplugMetric / SparkplugValueKind) for the Task 21 ingest state machine.

- Never throws, for ANY input. It sits on MQTTnet's shared dispatcher thread, so
  an escaping exception would stall delivery for every subscription on the
  connection, not one tag. Garbage, truncation, zero-length, a valid protobuf of
  another schema and an over-nested Template all resolve to a verdict.
- Zero-length input is INVALID, not "a payload with no metrics" — protobuf would
  parse it as all-defaults, and that is how a truncated-to-nothing body gets
  mistaken for a well-formed one.
- Explicit presence throughout (Has{Seq,Name,Alias,Datatype,Timestamp}), never a
  zero-check: an NBIRTH legitimately carries seq = 0, and every DATA metric after
  a birth carries an alias with no name and no datatype.
- Values are projected RAW, boxed, with the value oneof reported as an explicit
  ValueKind — Absent / Null / Scalar / Unsupported all mean different things and
  three of them carry a null value. DataSet/Template/extension decode as
  Unsupported (v1 scope) rather than throwing or silently vanishing.
- ReinterpretSigned() undoes Sparkplug's two's-complement-in-an-unsigned-field
  encoding of Int8/16/32/64. Kept out of decode because a DATA metric carries no
  datatype — only the consumer, holding the birth's alias table, knows which
  applies. Skipping it publishes 4294967254 for a tag whose value is -42.
- Datatype is carried as the generated Org.Eclipse.Tahu.Protobuf.DataType; the
  SparkplugDataType map is Task 17's and is applied downstream (Task 21).

Golden vectors: nbirth.bin (seq=0, named/aliased catalog, a negative Int32, an
is_null metric, a DataSet metric) + ndata.bin (alias-only metrics, no name, no
datatype) are hand-built by SparkplugGoldenPayloads, committed, and pinned by a
drift guard that rebuilds and byte-compares them on every run — plus a test that
they actually reach the output directory, since a missing copy item is invisible
in source.

Claude-Session: https://claude.ai/code/session_01GASWkNEi68FSCtvr6rLoEW
2026-07-24 21:09:14 -04:00
Joseph Doherty 4ad540376d merge: SQL poll driver (feat/sql-poll-driver)
v2-ci / build (push) Successful in 4m13s
v2-ci / unit-tests (push) Failing after 3h14m20s
Read-only Sql Equipment-kind driver: polls SQL Server tables/views on an
interval and publishes selected columns/rows as OPC UA variable nodes. Three
projects mirror the Modbus split (Contracts / runtime / Browser); ISqlDialect
seam (SqlServer only in v1); grouped one-query-per-source reads with a
three-layer client-side deadline; schema-walk address picker; typed AdminUI
driver-config + tag-config editors; env-gated central-SQL integration + a
dedicated-container blackhole gate.

Live /run gate PASSED end-to-end on docker-dev: authored a Sql driver +
device + KeyValue tag through the AdminUI, deployed, and read the live value
(dbo.TagValues.Line1.Speed = 42.5, Good) back over OPC UA.

Follow-ups filed: Gitea #496 (§8.1 catalog gate), #497 (cross-driver status
codes), #498 (connectionString persist guard).

Claude-Session: https://claude.ai/code/session_01GASWkNEi68FSCtvr6rLoEW
2026-07-24 21:01:26 -04:00
Joseph Doherty 57a5bb3c60 chore(docker-dev): wire Sql__ConnectionStrings__DevSql for the Sql driver live gate
Adds the named connection-string ref the Sql poll driver resolves
(connectionStringRef: "DevSql") to both central nodes' env, pointing at a
DevSql database on the rig's own sql container. Committed-dev-secret exception,
same posture as the ConfigDb line above it. This is the env wiring the Task 21
live /run gate used to author + deploy a Sql driver and read a live value
(dbo.TagValues.Line1.Speed = 42.5) back over OPC UA.

Claude-Session: https://claude.ai/code/session_01GASWkNEi68FSCtvr6rLoEW
2026-07-24 20:59:27 -04:00
Joseph Doherty 163dd7ab5c fix(mqtt): unbreak the .Contracts csproj -- '--' is illegal in an XML comment
The build-platform note added alongside the proto wiring quoted docker-dev's
`FROM --platform=linux/amd64` verbatim inside an MSBuild comment. XML forbids
'--' in a comment, so MSBuild refused to load the project at all (MSB4025) --
a total build stop for every consumer of .Contracts, i.e. the whole MQTT
driver, the Host, and the test suite. Reworded to name the platform in prose.

Caught by rebuilding after the edit; the preceding commit was made from a
build that predated it.

Claude-Session: https://claude.ai/code/session_01GASWkNEi68FSCtvr6rLoEW
2026-07-24 20:56:20 -04:00