[ADD] add api for deleting http rule

api/controller/gateway.go

@@ -43,7 +43,7 @@ func (g *GatewayStruct) HttpRule(w http.ResponseWriter, r *http.Request) {
 		g.addHttpRule(w, r)
 	case "PUT":
 		g.updateHttpRule(w, r)
-	case "Delete":
+	case "DELETE":
 		g.deleteHttpRule(w, r)
 	}
 }
@@ -145,7 +145,7 @@ func (g *GatewayStruct) updateHttpRule(w http.ResponseWriter, r *http.Request) {
 	// end transaction
 	if err := tx.Commit().Error; err != nil {
 		tx.Rollback()
-		httputil.ReturnError(r, w, 500, fmt.Sprintf("Unexpected error occorred while commit transaction: %v", err))
+		httputil.ReturnError(r, w, 500, fmt.Sprintf("Unexpected error occorred while committing transaction: %v", err))
 		return
 	}
 
@@ -153,5 +153,23 @@ func (g *GatewayStruct) updateHttpRule(w http.ResponseWriter, r *http.Request) {
 }
 
 func (g *GatewayStruct) deleteHttpRule(w http.ResponseWriter, r *http.Request) {
-
+	logrus.Debugf("delete http rule.")
+	var req api_model.HttpRuleStruct
+	ok := httputil.ValidatorRequestStructAndErrorResponse(r, w, &req, nil)
+	if !ok {
+		return
+	}
+	reqJson, _ := json.Marshal(req)
+	logrus.Debugf("Request is : %s", string(reqJson))
+
+	serviceID := r.Context().Value(middleware.ContextKey("service_id")).(string)
+
+	h := handler.GetGatewayHandler()
+	err := h.DeleteHttpRule(&req, serviceID)
+	if err != nil {
+		httputil.ReturnError(r, w, 500, fmt.Sprintf("Unexpected error occorred while delete http rule: %v", err))
+		return
+	}
+
+	httputil.ReturnSuccess(r, w, "success")
 }

api/handler/gateway.go

@@ -70,6 +70,38 @@ func (g *GatewayAction) UpdateHttpRule(req *apimodel.HttpRuleStruct, serviceID s
 	return rule, g.dbmanager.HttpRuleDaoTransactions(tx).UpdateModel(rule)
 }
 
+// DeleteHttpRule deletes http rule, including certificate and rule extensions
+func (g *GatewayAction) DeleteHttpRule(req *apimodel.HttpRuleStruct, serviceID string) error {
+	// begin transaction
+	tx := db.GetManager().Begin()
+	// delete http rule
+	httpRule, err := g.dbmanager.HttpRuleDaoTransactions(tx).DeleteHttpRuleByServiceIDAndContainerPort(serviceID,
+		req.ContainerPort)
+	if err != nil {
+		tx.Rollback()
+		return err
+	}
+
+	// delete certificate
+	if err := g.dbmanager.CertificateDaoTransactions(tx).DeleteCertificateByID(httpRule.CertificateID); err != nil {
+		tx.Rollback()
+		return err
+	}
+
+	// delete rule extension
+	if err := g.dbmanager.RuleExtensionDaoTransactions(tx).DeleteRuleExtensionByRuleID(httpRule.UUID); err != nil {
+		tx.Rollback()
+		return err
+	}
+
+	// end transaction
+	if err := tx.Commit().Error; err != nil {
+		return err
+	}
+
+	return nil
+}
+
 // AddCertificate adds certificate to db if it doesn't exists
 func (g *GatewayAction) AddCertificate(req *apimodel.HttpRuleStruct, tx *gorm.DB) error {
 	cert := &model.Certificate{

api/handler/gateway_handler.go

@@ -27,6 +27,7 @@ import (
 type GatewayHandler interface {
 	AddHttpRule(httpRule *dbmodel.HttpRule, tx *gorm.DB) error
 	UpdateHttpRule(req *apimodel.HttpRuleStruct, serviceID string, tx *gorm.DB) (*dbmodel.HttpRule, error)
+	DeleteHttpRule(req *apimodel.HttpRuleStruct, serviceID string) error
 	AddCertificate(req *apimodel.HttpRuleStruct, tx *gorm.DB) error
 	UpdateCertificate(req apimodel.HttpRuleStruct, httpRule *dbmodel.HttpRule, tx *gorm.DB) error
 	AddRuleExtensions(ruleID string, ruleExtensions []*apimodel.RuleExtensionStruct, tx *gorm.DB) error

db/dao/dao.go

@@ -423,6 +423,7 @@ type RuleExtensionDao interface {
 type HttpRuleDao interface {
 	Dao
 	GetHttpRuleByServiceIDAndContainerPort(serviceID string, containerPort int) (*model.HttpRule, error)
+	DeleteHttpRuleByServiceIDAndContainerPort(serviceID string, containerPort int) (*model.HttpRule, error)
 }
 
 // TcpRuleDao -

db/mysql/dao/gateway.go

@@ -163,6 +163,20 @@ func (h *HttpRuleDaoImpl) GetHttpRuleByServiceIDAndContainerPort(serviceID strin
 	return httpRule, nil
 }
 
+func (h *HttpRuleDaoImpl) DeleteHttpRuleByServiceIDAndContainerPort(serviceID string,
+	containerPort int) (*model.HttpRule, error) {
+	httpRule, err := h.GetHttpRuleByServiceIDAndContainerPort(serviceID, containerPort)
+	if err != nil {
+		return nil, err
+	}
+	if err := h.DB.Where("service_id = ? and container_port = ?", serviceID,
+		containerPort).Delete(httpRule).Error; err != nil {
+		return nil, err
+	}
+
+	return httpRule, nil
+}
+
 type TcpRuleDaoTmpl struct {
 	DB *gorm.DB
 }