[ADD] add api for updating tcp rule

api/controller/gateway.go

@@ -201,7 +201,23 @@ func (g *GatewayStruct) addTcpRule(w http.ResponseWriter, r *http.Request) {
 }
 
 func (g *GatewayStruct) updateTcpRule(w http.ResponseWriter, r *http.Request) {
+	logrus.Debugf("add tcp rule.")
+	var req api_model.TcpRuleStruct
+	ok := httputil.ValidatorRequestStructAndErrorResponse(r, w, &req, nil)
+	if !ok {
+		return
+	}
+	reqJson, _ := json.Marshal(req)
+	logrus.Debugf("Request is : %s", string(reqJson))
 
+	h := handler.GetGatewayHandler()
+	if err := h.UpdateTcpRule(&req); err != nil {
+		httputil.ReturnError(r, w, 500, fmt.Sprintf("Unexpected error occorred while " +
+			"updating tcp rule: %v", err))
+		return
+	}
+
+	httputil.ReturnSuccess(r, w, "success")
 }
 
 func (g *GatewayStruct) deleteTcpRule(w http.ResponseWriter, r *http.Request) {

api/handler/gateway.go

@@ -51,7 +51,7 @@ func (g *GatewayAction) UpdateHttpRule(req *apimodel.HttpRuleStruct,
 		return nil, err
 	}
 	if rule == nil {
-		return nil, fmt.Errorf("HttpRule dosen't exist based on ServiceID(%s) " +
+		return nil, fmt.Errorf("HttpRule dosen't exist based on ServiceID(%s) "+
 			"and ContainerPort(%v)", req.ServiceID, req.ContainerPort)
 	}
 	// delete old Certificate
@@ -149,6 +149,7 @@ func (g *GatewayAction) AddTcpRule(req *apimodel.TcpRuleStruct) error {
 	tx := db.GetManager().Begin()
 	// add tcp rule
 	if err := g.dbmanager.TcpRuleDaoTransactions(tx).AddModel(tcpRule); err != nil {
+		tx.Rollback()
 		return err
 	}
 
@@ -160,6 +161,7 @@ func (g *GatewayAction) AddTcpRule(req *apimodel.TcpRuleStruct) error {
 			Value:  ruleExtension.Value,
 		}
 		if err := g.dbmanager.RuleExtensionDaoTransactions(tx).AddModel(re); err != nil {
+			tx.Rollback()
 			return err
 		}
 	}
@@ -172,6 +174,51 @@ func (g *GatewayAction) AddTcpRule(req *apimodel.TcpRuleStruct) error {
 	return nil
 }
 
+func (g *GatewayAction) UpdateTcpRule(req *apimodel.TcpRuleStruct) error {
+	// begin transaction
+	tx := db.GetManager().Begin()
+	// get old tcp rule
+	tcpRule, err := g.dbmanager.TcpRuleDaoTransactions(tx).GetTcpRuleByServiceIDAndContainerPort(req.ServiceID,
+		req.ContainerPort)
+	if err != nil {
+		tx.Rollback()
+		return err
+	}
+	// delete old rule extensions
+	if err := g.dbmanager.RuleExtensionDaoTransactions(tx).DeleteRuleExtensionByRuleID(tcpRule.UUID); err != nil {
+		tx.Rollback()
+		return err
+	}
+	// update tcp rule
+	tcpRule.IP = req.IP
+	tcpRule.Port = req.Port
+	tcpRule.LoadBalancerType = req.LoadBalancerType
+	if err := g.dbmanager.TcpRuleDaoTransactions(tx).UpdateModel(tcpRule); err != nil {
+		tx.Rollback()
+		return err
+	}
+	// add new rule extensions
+	for _, ruleExtension := range req.RuleExtensions {
+		re := &model.RuleExtension{
+			UUID:   util.NewUUID(),
+			RuleID: tcpRule.UUID,
+			Value:  ruleExtension.Value,
+		}
+		if err := g.dbmanager.RuleExtensionDaoTransactions(tx).AddModel(re); err != nil {
+			tx.Rollback()
+			return err
+		}
+	}
+
+	// end transaction
+	if err := tx.Commit().Error; err != nil {
+		tx.Rollback()
+		return err
+	}
+
+	return nil
+}
+
 // AddRuleExtensions adds rule extensions to db if any of they doesn't exists
 func (g *GatewayAction) AddRuleExtensions(ruleID string, ruleExtensions []*apimodel.RuleExtensionStruct,
 	tx *gorm.DB) error {

api/handler/gateway_handler.go

@@ -33,6 +33,7 @@ type GatewayHandler interface {
 	UpdateCertificate(req apimodel.HttpRuleStruct, httpRule *dbmodel.HttpRule, tx *gorm.DB) error
 
 	AddTcpRule(req *apimodel.TcpRuleStruct) error
+	UpdateTcpRule(req *apimodel.TcpRuleStruct) error
 
 	AddRuleExtensions(ruleID string, ruleExtensions []*apimodel.RuleExtensionStruct, tx *gorm.DB) error
 }

db/mysql/dao/gateway.go

@@ -196,8 +196,15 @@ func (t *TcpRuleDaoTmpl) AddModel(mo model.Interface) error {
 	return nil
 }
 
-func (s *TcpRuleDaoTmpl) UpdateModel(model.Interface) error {
-	return nil
+func (t *TcpRuleDaoTmpl) UpdateModel(mo model.Interface) error {
+	tr, ok := mo.(*model.TcpRule)
+	if !ok {
+		return fmt.Errorf("Failed to convert %s to *model.TcpRule", reflect.TypeOf(mo).String())
+	}
+
+	return t.DB.Table(tr.TableName()).
+		Where("uuid = ?", tr.UUID).
+		Update(tr).Error
 }
 
 // GetTcpRuleByServiceIDAndContainerPort gets a TcpRule based on serviceID and containerPort