feat: build vehicle data platform and production pipeline

go/vehicle-gateway/internal/protocol/yutongmqtt/parser.go

@@ -52,6 +52,9 @@ func ParseMessage(endpoint string, topic string, payload []byte, receivedAtMS in
 		DeviceID:       deviceID,
 		Plate:          plate,
 		SourceEndpoint: "mqtt://" + endpoint + topic,
+		SourceCode:     sourceCodeFromEndpoint(endpoint),
+		PlatformName:   platformNameFromEndpoint(endpoint),
+		SourceKind:     "PLATFORM",
 		EventTimeMS:    eventTimeMS,
 		ReceivedAtMS:   receivedAtMS,
 		RawText:        string(payload),
@@ -63,6 +66,32 @@ func ParseMessage(endpoint string, topic string, payload []byte, receivedAtMS in
 	return env, nil
 }
 
+func platformNameFromEndpoint(endpoint string) string {
+	endpoint = strings.TrimSpace(endpoint)
+	if strings.EqualFold(endpoint, "yutong") {
+		return "宇通"
+	}
+	return endpoint
+}
+
+func sourceCodeFromEndpoint(endpoint string) string {
+	endpoint = strings.TrimSpace(endpoint)
+	var builder strings.Builder
+	for _, r := range endpoint {
+		switch {
+		case r >= 'a' && r <= 'z':
+			builder.WriteRune(r)
+		case r >= 'A' && r <= 'Z':
+			builder.WriteRune(r)
+		case r >= '0' && r <= '9':
+			builder.WriteRune(r)
+		case r == '_' || r == '-' || r == '.':
+			builder.WriteRune(r)
+		}
+	}
+	return builder.String()
+}
+
 func fieldsFromData(data map[string]any) map[string]any {
 	fields := map[string]any{}
 	if speed, ok := firstFloat(data, "METER_SPEED", "speed", "speed_kmh"); ok {

go/vehicle-gateway/internal/protocol/yutongmqtt/parser_test.go

@@ -47,6 +47,20 @@ func TestParseMessageMapsYutongPayloadToEnvelope(t *testing.T) {
 	if env.RawText == "" || env.Parsed["data"] == nil {
 		t.Fatalf("raw/parsed missing: %#v", env)
 	}
+	if env.SourceCode != "endpoint-a" || env.PlatformName != "endpoint-a" || env.SourceKind != "PLATFORM" {
+		t.Fatalf("source metadata = code:%q platform:%q kind:%q", env.SourceCode, env.PlatformName, env.SourceKind)
+	}
+}
+
+func TestParseMessageUsesYutongEndpointDisplayName(t *testing.T) {
+	payload := []byte(`{"device":"LMRKH9AC3R1004101","time":"20260413100000","data":{"TOTAL_MILEAGE":56905000}}`)
+	env, err := ParseMessage("yutong", "/ytforward/shln/1", payload, 1782745114999)
+	if err != nil {
+		t.Fatalf("ParseMessage() error = %v", err)
+	}
+	if env.SourceCode != "yutong" || env.PlatformName != "宇通" || env.SourceKind != "PLATFORM" {
+		t.Fatalf("source metadata = code:%q platform:%q kind:%q", env.SourceCode, env.PlatformName, env.SourceKind)
+	}
 }
 
 func TestParseMessageUsesDeviceAsVehicleKeyWhenNotVIN(t *testing.T) {