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fix: materialize stationary yutong daily mileage

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lingniu
2026-07-19 13:23:33 +08:00
parent dffe559160
commit 4da26ad3ba
7 changed files with 292 additions and 9 deletions
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42
go/vehicle-gateway/cmd/stats-backfill/main.go
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@@ -35,6 +35,7 @@ type config struct {
Reset bool
Debug bool
EventTimeFullScan bool
StationaryCarry bool
ProgressEvery int64
BaselineLookback int
Location *time.Location
@@ -453,7 +454,8 @@ func addRealtimeLocationFallbackAggregates(ctx context.Context, mysqlDB *sql.DB,
return added, err
}
for vin, currentSources := range current {
for _, currentRow := range currentSources {
for i := range currentSources {
currentRow := currentSources[i]
key := vin + "|" + date + "|" + string(protocol) + "|" + currentRow.SourceKey
if _, exists := aggregates[key]; exists {
continue
@@ -462,8 +464,22 @@ func addRealtimeLocationFallbackAggregates(ctx context.Context, mysqlDB *sql.DB,
if err != nil {
return added, err
}
if cfg.StationaryCarry && !hasPrevious {
continue
}
if cfg.StationaryCarry {
// A sparse Yutong location frame can retain an older
// realtime odometer than the durable daily baseline.
// Stationary carry-forward represents an explicit zero
// day, so both ends must use the latest trusted baseline.
currentRow.FirstTotalKM = previousRow.TotalKM
currentRow.TotalKM = previousRow.TotalKM
currentSources[i] = currentRow
}
agg := aggregateFromDailySource(date, protocol, currentRow, previousRow, hasPrevious)
if hasPrevious {
if cfg.StationaryCarry {
agg.QualityReason = stats.QualityReasonStationaryCarry
} else if hasPrevious {
agg.QualityReason = "realtime_location_fallback_historical_baseline"
} else {
agg.QualityReason = "realtime_location_fallback_current_day_first_baseline"
@@ -716,15 +732,28 @@ func queryRealtimeLocationLastRows(ctx context.Context, db *sql.DB, cfg config,
if loc == nil {
loc = time.FixedZone("Asia/Shanghai", 8*3600)
}
sqlText := `SELECT l.vin, COALESCE(NULLIF(s.peer, ''), ''), l.total_mileage_event_time, l.total_mileage_km
eventTimeColumn := "l.total_mileage_event_time"
timePredicate := `l.total_mileage_event_time >= ?
AND l.total_mileage_event_time < DATE_ADD(?, INTERVAL 1 DAY)`
if cfg.StationaryCarry {
eventTimeColumn = "l.event_time"
timePredicate = `l.event_time >= ?
AND l.event_time < DATE_ADD(?, INTERVAL 1 DAY)
AND l.total_mileage_event_time < ?
AND COALESCE(l.speed_kmh, 0) = 0`
}
sqlText := `SELECT l.vin, COALESCE(NULLIF(s.peer, ''), ''), ` + eventTimeColumn + `, l.total_mileage_km
FROM vehicle_realtime_location l
LEFT JOIN vehicle_realtime_snapshot s ON s.protocol = l.protocol AND s.vin = l.vin
WHERE l.protocol = ?
AND l.vin IS NOT NULL AND l.vin <> ''
AND l.total_mileage_km IS NOT NULL AND l.total_mileage_km > 0
AND l.total_mileage_event_time >= ?
AND l.total_mileage_event_time < DATE_ADD(?, INTERVAL 1 DAY)`
rows, err := db.QueryContext(ctx, sqlText, string(protocol), date, date)
AND ` + timePredicate
args := []any{string(protocol), date, date}
if cfg.StationaryCarry {
args = append(args, date)
}
rows, err := db.QueryContext(ctx, sqlText, args...)
if err != nil {
return nil, err
}
@@ -979,6 +1008,7 @@ func loadConfig() (config, error) {
Reset: envBool("BACKFILL_RESET", false),
Debug: envBool("BACKFILL_DEBUG", false),
EventTimeFullScan: envBool("BACKFILL_EVENT_TIME_FULL_SCAN", false),
StationaryCarry: envBool("BACKFILL_STATIONARY_CARRY_FORWARD", false),
ProgressEvery: int64(envInt("BACKFILL_PROGRESS_EVERY", 100000)),
BaselineLookback: envInt("BACKFILL_BASELINE_LOOKBACK_DAYS", 7),
Location: loc,