reloading-manager/backend/handlers/file.go

package handlers

import (
	"github.com/labstack/echo/v4"
)

func ReadFile(c echo.Context, formName string) ([]byte, error) {
	file, err := c.FormFile(formName)
	if err != nil {
		c.Logger().Error(err)

		return nil, err
	}
	handler, err := file.Open()
	if err != nil {
		return nil, err
	}

	buf := make([]byte, file.Size)
	_, _ = handler.Read(buf)

	return buf, nil
}