feat: train record session.

mqtt/listener.go

@@ -34,6 +34,7 @@ type trainingSessionPayload struct {
 	Type      string `json:"type"`
 	EventType string `json:"eventType"`
 	TestID    string `json:"testId"`
+	TrainId   string `json:"trainId"`
 	RegionID  string `json:"regionId"`
 	Flavor    string `json:"flavor"`
 	AppName   string `json:"appName"`
@@ -400,6 +401,7 @@ func buildTrainingSessionRecord(topic string, payload []byte, now int64) (*model
 		FlavorType:  flavorType,
 		RawFlavor:   event.Flavor,
 		AppName:     event.AppName,
+		TrainId:     event.TrainId,
 		PublishedAt: publishedAt,
 		ReceivedAt:  now,
 		RawPayload:  string(payload),