diff --git a/vendor/go.etcd.io/gofail/runtime/http.go b/vendor/go.etcd.io/gofail/runtime/http.go
new file mode 100644
index 0000000..84ecaf7
--- /dev/null
+++ b/vendor/go.etcd.io/gofail/runtime/http.go
@@ -0,0 +1,134 @@
+// Copyright 2016 CoreOS, Inc.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package runtime
+
+import (
+	"errors"
+	"fmt"
+	"io"
+	"net"
+	"net/http"
+	"sort"
+	"strconv"
+	"strings"
+)
+
+type httpHandler struct{}
+
+func serve(host string) error {
+	ln, err := net.Listen("tcp", host)
+	if err != nil {
+		return err
+	}
+	go http.Serve(ln, &httpHandler{})
+	return nil
+}
+
+func (*httpHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
+	// Ensures the server(runtime) doesn't panic due to the execution of
+	// panic failpoints during processing of the HTTP request, as the
+	// sender of the HTTP request should not be affected by the execution
+	// of the panic failpoints and crash as a side effect
+	panicMu.Lock()
+	defer panicMu.Unlock()
+
+	// flush before unlocking so a panic failpoint won't
+	// take down the http server before it sends the response
+	defer flush(w)
+
+	key := r.RequestURI
+	if len(key) == 0 || key[0] != '/' {
+		http.Error(w, "malformed request URI", http.StatusBadRequest)
+		return
+	}
+	key = key[1:]
+
+	switch {
+	// sets the failpoint
+	case r.Method == "PUT":
+		v, err := io.ReadAll(r.Body)
+		if err != nil {
+			http.Error(w, "failed ReadAll in PUT", http.StatusBadRequest)
+			return
+		}
+
+		fpMap := map[string]string{key: string(v)}
+		if strings.EqualFold(key, "failpoints") {
+			fpMap, err = parseFailpoints(string(v))
+			if err != nil {
+				http.Error(w, fmt.Sprintf("fail to parse failpoint: %v", err), http.StatusBadRequest)
+				return
+			}
+		}
+
+		for k, v := range fpMap {
+			if err := Enable(k, v); err != nil {
+				http.Error(w, fmt.Sprintf("fail to set failpoint: %v", err), http.StatusBadRequest)
+				return
+			}
+		}
+		w.WriteHeader(http.StatusNoContent)
+
+	// gets status of the failpoint
+	case r.Method == "GET":
+		if len(key) == 0 {
+			fps := list()
+			sort.Strings(fps)
+			lines := make([]string, len(fps))
+			for i := range lines {
+				s, _, _ := Status(fps[i])
+				lines[i] = fps[i] + "=" + s
+			}
+			w.Write([]byte(strings.Join(lines, "\n") + "\n"))
+		} else if strings.HasSuffix(key, "/count") {
+			fp := key[:len(key)-len("/count")]
+			_, count, err := Status(fp)
+			if err != nil {
+				if errors.Is(err, ErrNoExist) {
+					http.Error(w, "failed to GET: "+err.Error(), http.StatusNotFound)
+				} else {
+					http.Error(w, "failed to GET: "+err.Error(), http.StatusInternalServerError)
+				}
+				return
+			}
+			w.Write([]byte(strconv.Itoa(count)))
+		} else {
+			status, _, err := Status(key)
+			if err != nil {
+				http.Error(w, "failed to GET: "+err.Error(), http.StatusNotFound)
+			}
+			w.Write([]byte(status + "\n"))
+		}
+
+	// deactivates a failpoint
+	case r.Method == "DELETE":
+		if err := Disable(key); err != nil {
+			http.Error(w, "failed to delete failpoint "+err.Error(), http.StatusBadRequest)
+			return
+		}
+		w.WriteHeader(http.StatusNoContent)
+	default:
+		w.Header().Add("Allow", "DELETE")
+		w.Header().Add("Allow", "GET")
+		w.Header().Set("Allow", "PUT")
+		http.Error(w, "Method not allowed", http.StatusMethodNotAllowed)
+	}
+}
+
+func flush(w http.ResponseWriter) {
+	if f, ok := w.(http.Flusher); ok {
+		f.Flush()
+	}
+}