Joseph Doherty
ab202a1fa1
New tool wrapping ArchestrA.MxAccess.LMXProxyServerClass (the same COM
proxy aaObjectViewer / WindowViewer use) as a CliFx CLI for LLM-driven
debugging.
Commands:
- mxa info — loaded MxAccess assembly identity, supported value
types, MxStatusCategory enum.
- mxa read — fetch one or more tag values; subscribes briefly,
captures first OnDataChange per tag, tears down.
- mxa write — write a value with optional --type coercion; advises
first to resolve the attribute type, then waits for
OnWriteComplete with a per-call timeout.
- mxa subscribe — stream OnDataChange events for --seconds; JSON Lines
under --llm-json for piped agent consumption.
- mxa diag — minimal smoke test on a private STA thread; bypasses
the CliFx pipeline for diagnosing apartment / pump
issues.
Implementation notes documented in docs/api-notes.md (reverse-engineered
because AVEVA does not publish a single canonical MxAccess reference):
- Net48 / x86 / [STAThread] are non-negotiable. The CLI runs the entire
CliFx pipeline on a dedicated STA thread.
- COM events are dispatched as Win32 messages; AutoResetEvent.WaitOne
alone does not pump them on this configuration. MxSession.WaitForUpdate
loops Application.DoEvents() + drain + Sleep(20ms) instead.
- Write requires the target attribute's type to be resolved first.
WriteCommand advises and waits for the initial OnDataChange before
calling LMXProxyServerClass.Write to avoid ArgumentException
"Value does not fall within the expected range".
- Errors carry the full MXSTATUS_PROXY[] from MxAccess (Success,
Category, DetectedBy, Detail) so an agent can tell exactly which
layer rejected a request.
Verified against the live ZB galaxy with a writeable tag identified
via grdb (TestChildObject.TestInt, mx_attribute_category=10):
read: 99 (q=192, MxCategoryOk)
write 7: round-tripped — read returned 7 — written back to 99
write str: TestChildObject.TestString round-tripped a timestamp
subscribe: captured initial value plus subsequent change from a
separate process
The vendored ArchestrA.MxAccess.dll is gitignored — it is copied from
C:\Program Files (x86)\ArchestrA\Framework\Bin\ on any System Platform
install per the README.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
31 lines
671 B
Plaintext
31 lines
671 B
Plaintext
# Build output
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**/bin/
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**/obj/
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*.user
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*.suo
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# OS / editor noise
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.DS_Store
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Thumbs.db
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*.swp
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.vs/
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.vscode/
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.idea/
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# Local logs / scratch
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*.log
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# NuGet caches
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packages/
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.nuget/
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# Don't commit the AVEVA DLL itself by default — it is reproduced from
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# aalogcli/lib/build/ per the README recipe. Keep the build template,
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# upstream license, and gitkeep so the folder structure is preserved.
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aalogcli/lib/aaLogReader.dll
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# Vendored copy of System Platform's MxAccess interop assembly. The
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# README points users to copy it from C:\Program Files (x86)\ArchestrA\
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# Framework\Bin\ on a System Platform host. Don't redistribute via git.
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mxaccesscli/lib/ArchestrA.MxAccess.dll
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