shishengliang/lingniu-vehicle-ingest
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fix: treat yutong mqtt mileage as meters

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lingniu
2026-07-02 01:08:59 +08:00
parent 7ad1a25e8e
commit 4f2cded760
2 changed files with 15 additions and 5 deletions
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3
go/vehicle-gateway/internal/protocol/yutongmqtt/parser.go
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@@ -197,8 +197,5 @@ func looksLikeVIN(value string) bool {
} }
func normalizeTotalMileageKM(value float64) float64 { func normalizeTotalMileageKM(value float64) float64 {
if value > 1_000_000 {
return value / 1000 return value / 1000
} }
return value
}

15
go/vehicle-gateway/internal/protocol/yutongmqtt/parser_test.go
View File

@@ -36,7 +36,7 @@ func TestParseMessageMapsYutongPayloadToEnvelope(t *testing.T) {
t.Fatalf("plate = %q", env.Plate) t.Fatalf("plate = %q", env.Plate)
} }
assertFloatField(t, env, envelope.FieldSpeedKMH, 52.3) assertFloatField(t, env, envelope.FieldSpeedKMH, 52.3)
assertFloatField(t, env, envelope.FieldTotalMileageKM, 123456.7) assertFloatField(t, env, envelope.FieldTotalMileageKM, 123.4567)
assertFloatField(t, env, envelope.FieldSOCPercent, 70) assertFloatField(t, env, envelope.FieldSOCPercent, 70)
assertFloatField(t, env, envelope.FieldLongitude, 116.397128) assertFloatField(t, env, envelope.FieldLongitude, 116.397128)
assertFloatField(t, env, envelope.FieldLatitude, 39.916527) assertFloatField(t, env, envelope.FieldLatitude, 39.916527)
@@ -80,6 +80,19 @@ func TestParseMessageNormalizesProductionMileageMeters(t *testing.T) {
} }
} }
func TestParseMessageTreatsSmallYutongMileageAsMeters(t *testing.T) {
payload := []byte(`{
"device":"LMRKH9AC3R1004101",
"time":"2026-07-02 01:02:04.085",
"data":{"TOTAL_MILEAGE":1024,"METER_SPEED":19}
}`)
env, err := ParseMessage("yutong", "/ytforward/shln/1", payload, 1782940000000)
if err != nil {
t.Fatalf("ParseMessage() error = %v", err)
}
assertFloatField(t, env, envelope.FieldTotalMileageKM, 1.024)
}
func TestParseMessageRejectsMalformedJSON(t *testing.T) { func TestParseMessageRejectsMalformedJSON(t *testing.T) {
_, err := ParseMessage("endpoint-a", "/bad", []byte("{bad-json"), 1782745114999) _, err := ParseMessage("endpoint-a", "/bad", []byte("{bad-json"), 1782745114999)
if !errors.Is(err, ErrInvalidJSON) { if !errors.Is(err, ErrInvalidJSON) {