Restructure the driver-facing docs to match the OtOpcUa v2 multi-driver
reality (Galaxy, Modbus, S7, AB CIP, AB Legacy, TwinCAT, FOCAS, OPC UA Client
— 8 drivers total; Galaxy ships as three projects) and the capability-interface
architecture where every driver opts into IDriver + whichever of IReadable /
IWritable / ITagDiscovery / ISubscribable / IHostConnectivityProbe /
IPerCallHostResolver / IAlarmSource / IHistoryProvider / IRediscoverable it
supports. Doc scope follows the code: one-driver-specific docs scoped to that
driver, cross-driver concerns live once at the top level, per-driver specs
cross-link to docs/v2/driver-specs.md rather than duplicate.
What changed per file:
- docs/MxAccessBridge.md -> docs/drivers/Galaxy.md (git mv + rewrite): retitled
"Galaxy Driver", reframed as one of seven drivers. Added Project Split table
(Shared .NET Standard 2.0 / Host .NET 4.8 x86 / Proxy .NET 10) and Why
Out-of-Process section citing both the MXAccess bitness constraint and Tier C
stability isolation per docs/v2/plan.md section 4. Added IPC Transport
section covering pipe naming, MessagePack framing, DACL that denies Admins,
shared-secret handshake, heartbeat, and CallAsync<TReq,TResp> dispatch.
Moved file paths from src/ZB.MOM.WW.LmxOpcUa.Host/MxAccess/* to
src/ZB.MOM.WW.OtOpcUa.Driver.Galaxy.Host/Backend/MxAccess/* and added the
Shared + Proxy key-file tables. Added CapabilityInvoker + OTOPCUA0001
analyzer callout. Cross-linked to drivers/README.md, Galaxy-Repository.md,
HistoricalDataAccess.md.
- docs/GalaxyRepository.md -> docs/drivers/Galaxy-Repository.md (git mv +
rewrite): retitled "Galaxy Repository — Tag Discovery for the Galaxy
Driver", opened with a comparison table showing how every driver's
ITagDiscovery source is different (AB CIP @tags walker, TwinCAT
SymbolLoaderFactory, FOCAS CNC queries, OPC UA Client Session.Browse, etc).
Repositioned GalaxyRepositoryService as the Galaxy driver's
ITagDiscovery.DiscoverAsync implementation. Updated paths to
Driver.Galaxy.Host/Backend/GalaxyRepository/*. Added IRediscoverable section
covering the on-change-redeploy IPC path.
- docs/drivers/README.md (new): index with ground-truth driver table —
project path, stability tier, wire library, capability-interface list, and
one notable quirk per driver. Verified against the driver csproj files and
class declarations on focas-pr3-remaining-capabilities (the most recent
branch containing every driver). Galaxy gets its own dedicated docs; the
other seven drivers cross-link to docs/v2/driver-specs.md. Lists the full
Core.Abstractions capability surface, DriverTypeRegistry, CapabilityInvoker,
and OTOPCUA0001 analyzer.
- docs/HistoricalDataAccess.md (rewrite): reframed around IHistoryProvider as
a per-driver optional capability interface. Replaced v1 HistorianPluginLoader
/ AvevaHistorianPluginEntry plugin architecture with the v2 story —
Historian.Aveva was merged into Driver.Galaxy.Host/Backend/Historian/ and
IPC-forwarded through GalaxyProxyDriver. Documented all four IHistoryProvider
methods (ReadRawAsync / ReadProcessedAsync / ReadAtTimeAsync /
ReadEventsAsync), CapabilityInvoker wrapping with DriverCapability.HistoryRead,
and the per-driver coverage matrix (Galaxy + OPC UA Client implement; the
six protocol drivers don't and return BadHistoryOperationUnsupported). Kept
the cluster-failover + health-counter + quality-mapping detail for the
Galaxy Historian implementation. Flagged one gap: Proxy forwards all four
history message kinds but the Host-side HistoryAggregateType -> AnalogSummary
column mapping may surface GalaxyIpcException{Code="not-implemented"} on a
given branch until the Phase 2 Galaxy out-of-process gate lands.
Driver list built against ground truth (src on focas-pr3-remaining-capabilities):
Driver.Galaxy.{Shared,Host,Proxy}, Driver.Modbus, Driver.S7, Driver.AbCip,
Driver.AbLegacy, Driver.TwinCAT, Driver.FOCAS, Driver.OpcUaClient.
Capability interface lists verified against each *Driver.cs class declaration.
Aveva Historian ported to Driver.Galaxy.Host/Backend/Historian/; no separate
Historian.Aveva assembly on v2 branches.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Rewrite seven core-architecture docs to match the shipped multi-driver platform.
The v1 single-driver LmxNodeManager framing is replaced with the Core +
capability-interface model — Galaxy is now one driver of seven, and each doc
points at the current class names + source paths.
What changed per file:
- OpcUaServer.md — OtOpcUaServer as StandardServer host; per-driver
DriverNodeManager + CapabilityInvoker wiring; Config-DB-driven configuration
(sp_PublishGeneration, DraftRevisionToken, Admin UI); Phase 6.2
AuthorizationGate integration.
- AddressSpace.md — GenericDriverNodeManager.BuildAddressSpaceAsync walks
ITagDiscovery.DiscoverAsync and streams DriverAttributeInfo through
IAddressSpaceBuilder; CapturingBuilder registers alarm-condition sinks;
per-driver NodeId schemes replace the fixed ns=1;s=ZB root.
- ReadWriteOperations.md — OnReadValue / OnWriteValue dispatch to
IReadable.ReadAsync / IWritable.WriteAsync through CapabilityInvoker,
honoring WriteIdempotentAttribute (#143); two-layer authorization
(WriteAuthzPolicy + Phase 6.2 AuthorizationGate).
- Subscriptions.md — ISubscribable.SubscribeAsync/UnsubscribeAsync is the
capability surface; STA-thread story is now Galaxy-specific (StaPump inside
Driver.Galaxy.Host), other drivers are free-threaded.
- AlarmTracking.md — IAlarmSource is optional; AlarmSurfaceInvoker wraps
Subscribe/Ack/Unsubscribe with fan-out by IPerCallHostResolver and the
no-retry AlarmAcknowledge pipeline (#143); CapturingBuilder registers sinks
at build time.
- DataTypeMapping.md — DriverDataType + SecurityClassification are the
driver-agnostic enums; per-driver mappers (GalaxyProxyDriver inline,
AbCipDataType, ModbusDriver, etc.); SecurityClassification is metadata only,
ACL enforcement is at the server layer.
- IncrementalSync.md — IRediscoverable covers backend-change signals;
sp_ComputeGenerationDiff + DiffViewer drive generation-level change
detection; IDriver.ReinitializeAsync is the in-process recovery path.
