This update provides:
1) workaround around the build failures. In
summary, it forces the download of some packages during the build
process.
2) update the set of packages that should go inside the vendor
directory
3) Update the dockerfile to use go 1.10
Change-Id: I2bfd090ce0f25b0c10aa214755ae2da7e5384d60
diff --git a/vendor/github.com/coreos/etcd/proxy/grpcproxy/watch_broadcast.go b/vendor/github.com/coreos/etcd/proxy/grpcproxy/watch_broadcast.go
new file mode 100644
index 0000000..46e56c7
--- /dev/null
+++ b/vendor/github.com/coreos/etcd/proxy/grpcproxy/watch_broadcast.go
@@ -0,0 +1,152 @@
+// 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 grpcproxy
+
+import (
+ "context"
+ "sync"
+
+ "github.com/coreos/etcd/clientv3"
+ pb "github.com/coreos/etcd/etcdserver/etcdserverpb"
+)
+
+// watchBroadcast broadcasts a server watcher to many client watchers.
+type watchBroadcast struct {
+ // cancel stops the underlying etcd server watcher and closes ch.
+ cancel context.CancelFunc
+ donec chan struct{}
+
+ // mu protects rev and receivers.
+ mu sync.RWMutex
+ // nextrev is the minimum expected next revision of the watcher on ch.
+ nextrev int64
+ // receivers contains all the client-side watchers to serve.
+ receivers map[*watcher]struct{}
+ // responses counts the number of responses
+ responses int
+}
+
+func newWatchBroadcast(wp *watchProxy, w *watcher, update func(*watchBroadcast)) *watchBroadcast {
+ cctx, cancel := context.WithCancel(wp.ctx)
+ wb := &watchBroadcast{
+ cancel: cancel,
+ nextrev: w.nextrev,
+ receivers: make(map[*watcher]struct{}),
+ donec: make(chan struct{}),
+ }
+ wb.add(w)
+ go func() {
+ defer close(wb.donec)
+
+ opts := []clientv3.OpOption{
+ clientv3.WithRange(w.wr.end),
+ clientv3.WithProgressNotify(),
+ clientv3.WithRev(wb.nextrev),
+ clientv3.WithPrevKV(),
+ clientv3.WithCreatedNotify(),
+ }
+
+ cctx = withClientAuthToken(cctx, w.wps.stream.Context())
+
+ wch := wp.cw.Watch(cctx, w.wr.key, opts...)
+
+ for wr := range wch {
+ wb.bcast(wr)
+ update(wb)
+ }
+ }()
+ return wb
+}
+
+func (wb *watchBroadcast) bcast(wr clientv3.WatchResponse) {
+ wb.mu.Lock()
+ defer wb.mu.Unlock()
+ // watchers start on the given revision, if any; ignore header rev on create
+ if wb.responses > 0 || wb.nextrev == 0 {
+ wb.nextrev = wr.Header.Revision + 1
+ }
+ wb.responses++
+ for r := range wb.receivers {
+ r.send(wr)
+ }
+ if len(wb.receivers) > 0 {
+ eventsCoalescing.Add(float64(len(wb.receivers) - 1))
+ }
+}
+
+// add puts a watcher into receiving a broadcast if its revision at least
+// meets the broadcast revision. Returns true if added.
+func (wb *watchBroadcast) add(w *watcher) bool {
+ wb.mu.Lock()
+ defer wb.mu.Unlock()
+ if wb.nextrev > w.nextrev || (wb.nextrev == 0 && w.nextrev != 0) {
+ // wb is too far ahead, w will miss events
+ // or wb is being established with a current watcher
+ return false
+ }
+ if wb.responses == 0 {
+ // Newly created; create event will be sent by etcd.
+ wb.receivers[w] = struct{}{}
+ return true
+ }
+ // already sent by etcd; emulate create event
+ ok := w.post(&pb.WatchResponse{
+ Header: &pb.ResponseHeader{
+ // todo: fill in ClusterId
+ // todo: fill in MemberId:
+ Revision: w.nextrev,
+ // todo: fill in RaftTerm:
+ },
+ WatchId: w.id,
+ Created: true,
+ })
+ if !ok {
+ return false
+ }
+ wb.receivers[w] = struct{}{}
+ watchersCoalescing.Inc()
+
+ return true
+}
+func (wb *watchBroadcast) delete(w *watcher) {
+ wb.mu.Lock()
+ defer wb.mu.Unlock()
+ if _, ok := wb.receivers[w]; !ok {
+ panic("deleting missing watcher from broadcast")
+ }
+ delete(wb.receivers, w)
+ if len(wb.receivers) > 0 {
+ // do not dec the only left watcher for coalescing.
+ watchersCoalescing.Dec()
+ }
+}
+
+func (wb *watchBroadcast) size() int {
+ wb.mu.RLock()
+ defer wb.mu.RUnlock()
+ return len(wb.receivers)
+}
+
+func (wb *watchBroadcast) empty() bool { return wb.size() == 0 }
+
+func (wb *watchBroadcast) stop() {
+ if !wb.empty() {
+ // do not dec the only left watcher for coalescing.
+ watchersCoalescing.Sub(float64(wb.size() - 1))
+ }
+
+ wb.cancel()
+ <-wb.donec
+}