35 lines
951 B
Go
35 lines
951 B
Go
package middlewares
|
|
|
|
import (
|
|
"net/http"
|
|
|
|
"github.com/containous/traefik/v2/pkg/safe"
|
|
)
|
|
|
|
// HTTPHandlerSwitcher allows hot switching of http.ServeMux.
|
|
type HTTPHandlerSwitcher struct {
|
|
handler *safe.Safe
|
|
}
|
|
|
|
// NewHandlerSwitcher builds a new instance of HTTPHandlerSwitcher.
|
|
func NewHandlerSwitcher(newHandler http.Handler) (hs *HTTPHandlerSwitcher) {
|
|
return &HTTPHandlerSwitcher{
|
|
handler: safe.New(newHandler),
|
|
}
|
|
}
|
|
|
|
func (h *HTTPHandlerSwitcher) ServeHTTP(rw http.ResponseWriter, req *http.Request) {
|
|
handlerBackup := h.handler.Get().(http.Handler)
|
|
handlerBackup.ServeHTTP(rw, req)
|
|
}
|
|
|
|
// GetHandler returns the current http.ServeMux.
|
|
func (h *HTTPHandlerSwitcher) GetHandler() (newHandler http.Handler) {
|
|
handler := h.handler.Get().(http.Handler)
|
|
return handler
|
|
}
|
|
|
|
// UpdateHandler safely updates the current http.ServeMux with a new one.
|
|
func (h *HTTPHandlerSwitcher) UpdateHandler(newHandler http.Handler) {
|
|
h.handler.Set(newHandler)
|
|
}
|