Dapr源码学习之dapr仓库-基础代码-cors的源码学习

// DefaultAllowedOrigins is the default origins allowed for the Dapr HTTP servers
const DefaultAllowedOrigins = "*"

func FromFlags() (*DaprRuntime, error) {
allowedOrigins := flag.String("allowed-origins", cors.DefaultAllowedOrigins, "Allowed HTTP origins")

	runtimeConfig := NewRuntimeConfig(*appID, placementAddresses, *controlPlaneAddress, *allowedOrigins ......)
}

func NewRuntimeConfig(
   id string, placementAddresses []string,
   controlPlaneAddress, allowedOrigins ......) *Config {
   return &Config{
   	AllowedOrigins:      allowedOrigins,
   	......
   }

func (s *server) useCors(next fasthttp.RequestHandler) fasthttp.RequestHandler {
   if s.config.AllowedOrigins == cors_dapr.DefaultAllowedOrigins {
      return next
   }

   log.Infof("enabled cors http middleware")
   origins := strings.Split(s.config.AllowedOrigins, ",")
   corsHandler := s.getCorsHandler(origins)
   return corsHandler.CorsMiddleware(next)
}