diff --git a/vendor/go.etcd.io/etcd/lease/leasehttp/doc.go b/vendor/go.etcd.io/etcd/lease/leasehttp/doc.go
new file mode 100644
index 0000000..8177a37
--- /dev/null
+++ b/vendor/go.etcd.io/etcd/lease/leasehttp/doc.go
@@ -0,0 +1,16 @@
+// Copyright 2016 The etcd Authors
+//
+// 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 leasehttp serves lease renewals made through HTTP requests.
+package leasehttp
diff --git a/vendor/go.etcd.io/etcd/lease/leasehttp/http.go b/vendor/go.etcd.io/etcd/lease/leasehttp/http.go
new file mode 100644
index 0000000..67e916d
--- /dev/null
+++ b/vendor/go.etcd.io/etcd/lease/leasehttp/http.go
@@ -0,0 +1,248 @@
+// Copyright 2016 The etcd Authors
+//
+// 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 leasehttp
+
+import (
+	"bytes"
+	"context"
+	"errors"
+	"fmt"
+	"io/ioutil"
+	"net/http"
+	"time"
+
+	pb "go.etcd.io/etcd/etcdserver/etcdserverpb"
+	"go.etcd.io/etcd/lease"
+	"go.etcd.io/etcd/lease/leasepb"
+	"go.etcd.io/etcd/pkg/httputil"
+)
+
+var (
+	LeasePrefix         = "/leases"
+	LeaseInternalPrefix = "/leases/internal"
+	applyTimeout        = time.Second
+	ErrLeaseHTTPTimeout = errors.New("waiting for node to catch up its applied index has timed out")
+)
+
+// NewHandler returns an http Handler for lease renewals
+func NewHandler(l lease.Lessor, waitch func() <-chan struct{}) http.Handler {
+	return &leaseHandler{l, waitch}
+}
+
+type leaseHandler struct {
+	l      lease.Lessor
+	waitch func() <-chan struct{}
+}
+
+func (h *leaseHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
+	if r.Method != "POST" {
+		http.Error(w, "Method Not Allowed", http.StatusMethodNotAllowed)
+		return
+	}
+
+	defer r.Body.Close()
+	b, err := ioutil.ReadAll(r.Body)
+	if err != nil {
+		http.Error(w, "error reading body", http.StatusBadRequest)
+		return
+	}
+
+	var v []byte
+	switch r.URL.Path {
+	case LeasePrefix:
+		lreq := pb.LeaseKeepAliveRequest{}
+		if uerr := lreq.Unmarshal(b); uerr != nil {
+			http.Error(w, "error unmarshalling request", http.StatusBadRequest)
+			return
+		}
+		select {
+		case <-h.waitch():
+		case <-time.After(applyTimeout):
+			http.Error(w, ErrLeaseHTTPTimeout.Error(), http.StatusRequestTimeout)
+			return
+		}
+		ttl, rerr := h.l.Renew(lease.LeaseID(lreq.ID))
+		if rerr != nil {
+			if rerr == lease.ErrLeaseNotFound {
+				http.Error(w, rerr.Error(), http.StatusNotFound)
+				return
+			}
+
+			http.Error(w, rerr.Error(), http.StatusBadRequest)
+			return
+		}
+		// TODO: fill out ResponseHeader
+		resp := &pb.LeaseKeepAliveResponse{ID: lreq.ID, TTL: ttl}
+		v, err = resp.Marshal()
+		if err != nil {
+			http.Error(w, err.Error(), http.StatusInternalServerError)
+			return
+		}
+
+	case LeaseInternalPrefix:
+		lreq := leasepb.LeaseInternalRequest{}
+		if lerr := lreq.Unmarshal(b); lerr != nil {
+			http.Error(w, "error unmarshalling request", http.StatusBadRequest)
+			return
+		}
+		select {
+		case <-h.waitch():
+		case <-time.After(applyTimeout):
+			http.Error(w, ErrLeaseHTTPTimeout.Error(), http.StatusRequestTimeout)
+			return
+		}
+		l := h.l.Lookup(lease.LeaseID(lreq.LeaseTimeToLiveRequest.ID))
+		if l == nil {
+			http.Error(w, lease.ErrLeaseNotFound.Error(), http.StatusNotFound)
+			return
+		}
+		// TODO: fill out ResponseHeader
+		resp := &leasepb.LeaseInternalResponse{
+			LeaseTimeToLiveResponse: &pb.LeaseTimeToLiveResponse{
+				Header:     &pb.ResponseHeader{},
+				ID:         lreq.LeaseTimeToLiveRequest.ID,
+				TTL:        int64(l.Remaining().Seconds()),
+				GrantedTTL: l.TTL(),
+			},
+		}
+		if lreq.LeaseTimeToLiveRequest.Keys {
+			ks := l.Keys()
+			kbs := make([][]byte, len(ks))
+			for i := range ks {
+				kbs[i] = []byte(ks[i])
+			}
+			resp.LeaseTimeToLiveResponse.Keys = kbs
+		}
+
+		v, err = resp.Marshal()
+		if err != nil {
+			http.Error(w, err.Error(), http.StatusInternalServerError)
+			return
+		}
+
+	default:
+		http.Error(w, fmt.Sprintf("unknown request path %q", r.URL.Path), http.StatusBadRequest)
+		return
+	}
+
+	w.Header().Set("Content-Type", "application/protobuf")
+	w.Write(v)
+}
+
+// RenewHTTP renews a lease at a given primary server.
+// TODO: Batch request in future?
+func RenewHTTP(ctx context.Context, id lease.LeaseID, url string, rt http.RoundTripper) (int64, error) {
+	// will post lreq protobuf to leader
+	lreq, err := (&pb.LeaseKeepAliveRequest{ID: int64(id)}).Marshal()
+	if err != nil {
+		return -1, err
+	}
+
+	cc := &http.Client{Transport: rt}
+	req, err := http.NewRequest("POST", url, bytes.NewReader(lreq))
+	if err != nil {
+		return -1, err
+	}
+	req.Header.Set("Content-Type", "application/protobuf")
+	req.Cancel = ctx.Done()
+
+	resp, err := cc.Do(req)
+	if err != nil {
+		return -1, err
+	}
+	b, err := readResponse(resp)
+	if err != nil {
+		return -1, err
+	}
+
+	if resp.StatusCode == http.StatusRequestTimeout {
+		return -1, ErrLeaseHTTPTimeout
+	}
+
+	if resp.StatusCode == http.StatusNotFound {
+		return -1, lease.ErrLeaseNotFound
+	}
+
+	if resp.StatusCode != http.StatusOK {
+		return -1, fmt.Errorf("lease: unknown error(%s)", string(b))
+	}
+
+	lresp := &pb.LeaseKeepAliveResponse{}
+	if err := lresp.Unmarshal(b); err != nil {
+		return -1, fmt.Errorf(`lease: %v. data = "%s"`, err, string(b))
+	}
+	if lresp.ID != int64(id) {
+		return -1, fmt.Errorf("lease: renew id mismatch")
+	}
+	return lresp.TTL, nil
+}
+
+// TimeToLiveHTTP retrieves lease information of the given lease ID.
+func TimeToLiveHTTP(ctx context.Context, id lease.LeaseID, keys bool, url string, rt http.RoundTripper) (*leasepb.LeaseInternalResponse, error) {
+	// will post lreq protobuf to leader
+	lreq, err := (&leasepb.LeaseInternalRequest{
+		LeaseTimeToLiveRequest: &pb.LeaseTimeToLiveRequest{
+			ID:   int64(id),
+			Keys: keys,
+		},
+	}).Marshal()
+	if err != nil {
+		return nil, err
+	}
+
+	req, err := http.NewRequest("POST", url, bytes.NewReader(lreq))
+	if err != nil {
+		return nil, err
+	}
+	req.Header.Set("Content-Type", "application/protobuf")
+
+	req = req.WithContext(ctx)
+
+	cc := &http.Client{Transport: rt}
+	var b []byte
+	// buffer errc channel so that errc don't block inside the go routinue
+	resp, err := cc.Do(req)
+	if err != nil {
+		return nil, err
+	}
+	b, err = readResponse(resp)
+	if err != nil {
+		return nil, err
+	}
+	if resp.StatusCode == http.StatusRequestTimeout {
+		return nil, ErrLeaseHTTPTimeout
+	}
+	if resp.StatusCode == http.StatusNotFound {
+		return nil, lease.ErrLeaseNotFound
+	}
+	if resp.StatusCode != http.StatusOK {
+		return nil, fmt.Errorf("lease: unknown error(%s)", string(b))
+	}
+
+	lresp := &leasepb.LeaseInternalResponse{}
+	if err := lresp.Unmarshal(b); err != nil {
+		return nil, fmt.Errorf(`lease: %v. data = "%s"`, err, string(b))
+	}
+	if lresp.LeaseTimeToLiveResponse.ID != int64(id) {
+		return nil, fmt.Errorf("lease: renew id mismatch")
+	}
+	return lresp, nil
+}
+
+func readResponse(resp *http.Response) (b []byte, err error) {
+	b, err = ioutil.ReadAll(resp.Body)
+	httputil.GracefulClose(resp)
+	return
+}