added getFilterCategoriesOfFilter

cve-alert-restapi/request-handler/requestHandler.go

@@ -219,6 +219,28 @@ func StartWebServer(database *sqlx.DB, port string) {
 	//     description: Returns a string that the specified filter is not in the DB.
 	e.GET("/filter/:id/cases", getFilterCases)
 
+	// swagger:operation GET /filter/{id}/categories filter getFilterCategoriesOfFilter
+	// ---
+	// summary: Gets all filter categories of a specific filter.
+	// produces:
+	// - application/json
+	// parameters:
+	// - name: id
+	//   in: path
+	//   description: ID of the filter.
+	//   type: integer
+	//   required: true
+	// responses:
+	//   200:
+	//     description: Returns the filter categories.
+	//     schema:
+	//       type: array
+	//       items:
+	//         $ref: '#/definitions/FilterCategory'
+	//   404:
+	//     description: Returns a string that there are no filter categories for the specified filter.
+	e.GET("/filter/:id/categories", getFilterCategoriesOfFilter)
+
 	// swagger:operation Post /filter/import filter importFilter
 	// ---
 	// summary: Imports filter from a file.
@@ -602,6 +624,31 @@ func getFilterCases(c echo.Context) error {
 	return c.JSON(http.StatusOK, cases)
 }
 
+func getFilterCategoriesOfFilter(c echo.Context) error {
+	var filterCategories []alertmanager.FilterCategory
+	sb := sqlbuilder.MySQL.NewSelectBuilder()
+	sb.Select("*").From("filter_categories").Where(sb.Equal("filter_id", c.Param("id")))
+	sql, args := sb.Build()
+	query, err := sqlbuilder.MySQL.Interpolate(sql, args)
+	if err != nil {
+		log.Error().
+			AnErr("Error", err).
+			Msg("Could not build sql query")
+		return err
+	}
+	err = db.Select(&filterCategories, query)
+	if err != nil {
+		log.Error().
+			AnErr("Error", err).
+			Msg("Could not search db")
+		return err
+	}
+	if filterCategories == nil {
+		return c.String(http.StatusNotFound, "No filter categories found!\n")
+	}
+	return c.JSON(http.StatusOK, filterCategories)
+}
+
 func importFilter(c echo.Context) error {
 	requestFile, err := c.FormFile("filterConfig")
 	if err != nil {