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Former-commit-id: 592e9cddf3511fc08e87f19ad39fdaac479b453f

core/router/fallback_stack.go

@@ -0,0 +1,44 @@
+package router
+
+import (
+	"net/http"
+	"sync"
+
+	"github.com/kataras/iris/context"
+)
+
+type FallbackStack struct {
+	handlers context.Handlers
+	m        sync.Mutex
+}
+
+func (stk *FallbackStack) add(h context.Handlers) {
+	stk.m.Lock()
+	defer stk.m.Unlock()
+
+	stk.handlers = append(stk.handlers, h...)
+
+	copy(stk.handlers[len(h):], stk.handlers)
+	copy(stk.handlers, h)
+}
+
+func (stk *FallbackStack) list() context.Handlers {
+	res := make(context.Handlers, len(stk.handlers))
+
+	stk.m.Lock()
+	defer stk.m.Unlock()
+
+	copy(res, stk.handlers)
+
+	return res
+}
+
+func NewFallbackStack() *FallbackStack {
+	return &FallbackStack{
+		handlers: context.Handlers{
+			func(ctx context.Context) {
+				ctx.StatusCode(http.StatusNotFound)
+			},
+		},
+	}
+}