Captured the native StartQuery2 pRequestBuff and the GetNextQueryResultBuffer2
response (instrument-wcf-writemessage + chained instrument-wcf-readmessage) and
decoded both against AnalogSummaryHistory SQL ground truth. Conclusion: the rich
multi-aggregate analog/state summary struct is NOT delivered over the 2020 WCF
binary protocol — the response is the ordinary version-9 row buffer the existing
aggregate parser already handles, carrying one value per cycle selected by
RetrievalMode (QueryType 5-8), not ValueSelector (inert on this path). So
"analog summary" == the existing ReadAggregateAsync; no new src/ code warranted.
Tooling (tools/ + scripts/ only, nothing in src/):
- NativeTraceHarness: drive summary knobs via --value-selector /
--aggregation-type / --max-states (uint16) / --filter
- Capture-SummaryRequest.ps1: repeatable instrument+stage+matrix capture,
-WithResponse chains the ReadMessage hook
- decode-summary-capture.py: StartQuery2 request diff vs baseline
- decode-summary-response.py: response decode vs SQL ground truth
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Joseph Doherty