PLT-5750 Add sequence number to websocket connections and events (#5907)

* Add sequence number to websocket connections and events

* Copy pointer instead of pass by value and use int64 over uint64

* Add more logging to missed events

model/websocket_message.go

@@ -36,8 +36,6 @@ const (
 type WebSocketMessage interface {
 	ToJson() string
 	IsValid() bool
-	DoPreComputeJson()
-	GetPreComputeJson() []byte
 	EventType() string
 }
 
@@ -49,10 +47,10 @@ type WebsocketBroadcast struct {
 }
 
 type WebSocketEvent struct {
-	Event          string                 `json:"event"`
-	Data           map[string]interface{} `json:"data"`
-	Broadcast      *WebsocketBroadcast    `json:"broadcast"`
-	PreComputeJson []byte                 `json:"-"`
+	Event     string                 `json:"event"`
+	Data      map[string]interface{} `json:"data"`
+	Broadcast *WebsocketBroadcast    `json:"broadcast"`
+	Sequence  int64                  `json:"seq"`
 }
 
 func (m *WebSocketEvent) Add(key string, value interface{}) {
@@ -72,19 +70,6 @@ func (o *WebSocketEvent) EventType() string {
 	return o.Event
 }
 
-func (o *WebSocketEvent) DoPreComputeJson() {
-	b, err := json.Marshal(o)
-	if err != nil {
-		o.PreComputeJson = []byte("")
-	} else {
-		o.PreComputeJson = b
-	}
-}
-
-func (o *WebSocketEvent) GetPreComputeJson() []byte {
-	return o.PreComputeJson
-}
-
 func (o *WebSocketEvent) ToJson() string {
 	b, err := json.Marshal(o)
 	if err != nil {
@@ -106,11 +91,10 @@ func WebSocketEventFromJson(data io.Reader) *WebSocketEvent {
 }
 
 type WebSocketResponse struct {
-	Status         string                 `json:"status"`
-	SeqReply       int64                  `json:"seq_reply,omitempty"`
-	Data           map[string]interface{} `json:"data,omitempty"`
-	Error          *AppError              `json:"error,omitempty"`
-	PreComputeJson []byte                 `json:"-"`
+	Status   string                 `json:"status"`
+	SeqReply int64                  `json:"seq_reply,omitempty"`
+	Data     map[string]interface{} `json:"data,omitempty"`
+	Error    *AppError              `json:"error,omitempty"`
 }
 
 func (m *WebSocketResponse) Add(key string, value interface{}) {
@@ -142,19 +126,6 @@ func (o *WebSocketResponse) ToJson() string {
 	}
 }
 
-func (o *WebSocketResponse) DoPreComputeJson() {
-	b, err := json.Marshal(o)
-	if err != nil {
-		o.PreComputeJson = []byte("")
-	} else {
-		o.PreComputeJson = b
-	}
-}
-
-func (o *WebSocketResponse) GetPreComputeJson() []byte {
-	return o.PreComputeJson
-}
-
 func WebSocketResponseFromJson(data io.Reader) *WebSocketResponse {
 	decoder := json.NewDecoder(data)
 	var o WebSocketResponse