diff --git a/vendor/go.etcd.io/gofail/runtime/failpoint.go b/vendor/go.etcd.io/gofail/runtime/failpoint.go
new file mode 100644
index 0000000..ea8db3f
--- /dev/null
+++ b/vendor/go.etcd.io/gofail/runtime/failpoint.go
@@ -0,0 +1,86 @@
+// 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 (
+	"fmt"
+	"sync"
+)
+
+type Failpoint struct {
+	t   *terms
+	mux sync.RWMutex
+}
+
+func NewFailpoint(name string) *Failpoint {
+	return register(name)
+}
+
+// Acquire gets evalutes the failpoint terms; if the failpoint
+// is active, it will return a value. Otherwise, returns a non-nil error.
+//
+// Notice that during the exection of Acquire(), the failpoint can be disabled,
+// but the already in-flight execution won't be terminated
+func (fp *Failpoint) Acquire() (interface{}, error) {
+	fp.mux.RLock()
+	// terms are locked during execution, so deepcopy is not required as no change can be made during execution
+	cachedT := fp.t
+	fp.mux.RUnlock()
+
+	if cachedT == nil {
+		return nil, ErrDisabled
+	}
+	result := cachedT.eval()
+	if result == nil {
+		return nil, ErrDisabled
+	}
+	return result, nil
+}
+
+// BadType is called when the failpoint evaluates to the wrong type.
+func (fp *Failpoint) BadType(v interface{}, t string) {
+	fmt.Printf("failpoint: %q got value %v of type \"%T\" but expected type %q\n", fp.t.fpath, v, v, t)
+}
+
+func (fp *Failpoint) SetTerm(t *terms) {
+	fp.mux.Lock()
+	defer fp.mux.Unlock()
+
+	fp.t = t
+}
+
+func (fp *Failpoint) ClearTerm() error {
+	fp.mux.Lock()
+	defer fp.mux.Unlock()
+
+	if fp.t == nil {
+		return ErrDisabled
+	}
+	fp.t = nil
+
+	return nil
+}
+
+func (fp *Failpoint) Status() (string, int, error) {
+	fp.mux.RLock()
+	defer fp.mux.RUnlock()
+
+	t := fp.t
+	if t == nil {
+		return "", 0, ErrDisabled
+	}
+
+	return t.desc, t.counter, nil
+}