Initial commit

vendor/github.com/hyperhq/hypercli/api/server/router_swapper.go

@@ -0,0 +1,30 @@
+package server
+
+import (
+	"net/http"
+	"sync"
+
+	"github.com/gorilla/mux"
+)
+
+// routerSwapper is an http.Handler that allow you to swap
+// mux routers.
+type routerSwapper struct {
+	mu     sync.Mutex
+	router *mux.Router
+}
+
+// Swap changes the old router with the new one.
+func (rs *routerSwapper) Swap(newRouter *mux.Router) {
+	rs.mu.Lock()
+	rs.router = newRouter
+	rs.mu.Unlock()
+}
+
+// ServeHTTP makes the routerSwapper to implement the http.Handler interface.
+func (rs *routerSwapper) ServeHTTP(w http.ResponseWriter, r *http.Request) {
+	rs.mu.Lock()
+	router := rs.router
+	rs.mu.Unlock()
+	router.ServeHTTP(w, r)
+}