Five doc-content updates after this session's code-review resolution
sweep. No code touched; pure documentation drift correction.
1. docs/reqs/HighLevelReqs.md (HLR-007 — Service Hosting):
Refreshed the deployment description from "three cooperating
processes (Server, Admin, Galaxy.Host)" to "two cooperating
Windows services (Server, Admin)". The legacy x86 TopShelf
Galaxy.Host process was retired in PR 7.2 (2026-04-30); Galaxy
access now flows through the in-process Tier-A GalaxyDriver
talking gRPC to the sibling mxaccessgw gateway. Also called out
decision #30 (AddWindowsService replacing TopShelf) inline.
2. docs/VirtualTags.md:
- Line 9: "compiled via Microsoft.CodeAnalysis.CSharp.Scripting"
replaced with the current pipeline (Microsoft.CodeAnalysis.CSharp
regular compiler — Core.Scripting-008 / -016 retired the
CSharpScript/ScriptRunner path).
- Line 39: orphan-thread leak description rewritten. The
CSharp.Scripting-era "underlying ScriptRunner keeps running on
its thread-pool thread until the Roslyn runtime returns" is no
longer accurate — the new pipeline binds the script as a
regular C# Func<> delegate, so the leak is now "synchronous
CPU-bound work on a pool thread" (same operator-visible
effect, different mechanism).
3. docs/v2/plan.md decision #29 ("Galaxy Host is a separate Windows
service"):
Annotated both the decision body and the decision-log table row
with "Reversed PR 7.2, 2026-04-30" + a one-line summary of the
replacement architecture. The original reasoning is preserved as
audit trail per the decision-log convention.
4. docs/v2/implementation/phase-7-scripting-and-alarming.md A.1:
Added an Implementation note describing the
Core.Scripting-008 / -016 supersession of the original
CSharpScript pipeline. The historical record stays; the note
points future readers at docs/VirtualTags.md "Compile cache"
for the current contract.
5. docs/plans/alarms-over-gateway.md "Files" section under client
regeneration:
Updated the .NET regeneration instructions to point at the new
ZB.MOM.WW.MxGateway.Contracts.csproj path. The old
clients/dotnet/MxGateway.Client.csproj no longer exists in the
sibling repo (restructure after this plan was written) and the
vendored-binaries situation in
src/Drivers/ZB.MOM.WW.OtOpcUa.Driver.Galaxy/libs/ is called out
so a reader following the plan won't chase a deleted path.
Verification: grep against docs/ for the pre-fix wordings ("three
cooperating processes", "Galaxy.Host (TopShelf)", "ScriptRunner",
the wrong BadDeviceFailure hex code 0x80550000) returns no hits.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Full OPC UA server on .NET Framework 4.8 (x86) exposing AVEVA System
Platform Galaxy tags via MXAccess. Mirrors Galaxy object hierarchy as
OPC UA address space, translating contained-name browse paths to
tag-name runtime references.
Components implemented:
- Configuration: AppConfiguration with 4 sections, validator
- Domain: ConnectionState, Quality, Vtq, MxDataTypeMapper, error codes
- MxAccess: StaComThread, MxAccessClient (partial classes), MxProxyAdapter
using strongly-typed ArchestrA.MxAccess COM interop
- Galaxy Repository: SQL queries (hierarchy, attributes, change detection),
ChangeDetectionService with auto-rebuild on deploy
- OPC UA Server: LmxNodeManager (CustomNodeManager2), LmxOpcUaServer,
OpcUaServerHost with programmatic config, SecurityPolicy None
- Status Dashboard: HTTP server with HTML/JSON/health endpoints
- Integration: Full 14-step startup, graceful shutdown, component wiring
175 tests (174 unit + 1 integration), all passing.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Joseph Doherty