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fix: calculate jt808 daily mileage from metric endpoints

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lingniu
2026-07-01 09:52:24 +08:00
parent bb051391c2
commit 0236884f81
7 changed files with 53 additions and 15 deletions
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7
docs/superpowers/specs/2026-06-23-gb32960-production-readiness-design.md
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@@ -344,11 +344,12 @@ Validation:
### Daily Mileage
JT808 daily mileage uses the GPS total mileage reported in location additional
information. The first valid sample of the local day is the baseline and the
latest valid total mileage rewrites the same metric row.
information. The local-day minimum and maximum GPS total mileage values rewrite
the same metric row, so ordered streaming and historical replay use one
calculation path.
```text
dailyMileage = today.lastTotalMileage - today.firstTotalMileage
dailyMileage = today.maxTotalMileage - today.minTotalMileage
calculationMethod = JT808_TOTAL_MILEAGE_DIFF
```