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/clientv3/naming/grpc.go b/vendor/github.com/coreos/etcd/clientv3/naming/grpc.go
new file mode 100644
index 0000000..3c0e8e6
--- /dev/null
+++ b/vendor/github.com/coreos/etcd/clientv3/naming/grpc.go
@@ -0,0 +1,131 @@
+// 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 naming
+
+import (
+ "context"
+ "encoding/json"
+ "fmt"
+
+ etcd "github.com/coreos/etcd/clientv3"
+
+ "google.golang.org/grpc/codes"
+ "google.golang.org/grpc/naming"
+ "google.golang.org/grpc/status"
+)
+
+var ErrWatcherClosed = fmt.Errorf("naming: watch closed")
+
+// GRPCResolver creates a grpc.Watcher for a target to track its resolution changes.
+type GRPCResolver struct {
+ // Client is an initialized etcd client.
+ Client *etcd.Client
+}
+
+func (gr *GRPCResolver) Update(ctx context.Context, target string, nm naming.Update, opts ...etcd.OpOption) (err error) {
+ switch nm.Op {
+ case naming.Add:
+ var v []byte
+ if v, err = json.Marshal(nm); err != nil {
+ return status.Error(codes.InvalidArgument, err.Error())
+ }
+ _, err = gr.Client.KV.Put(ctx, target+"/"+nm.Addr, string(v), opts...)
+ case naming.Delete:
+ _, err = gr.Client.Delete(ctx, target+"/"+nm.Addr, opts...)
+ default:
+ return status.Error(codes.InvalidArgument, "naming: bad naming op")
+ }
+ return err
+}
+
+func (gr *GRPCResolver) Resolve(target string) (naming.Watcher, error) {
+ ctx, cancel := context.WithCancel(context.Background())
+ w := &gRPCWatcher{c: gr.Client, target: target + "/", ctx: ctx, cancel: cancel}
+ return w, nil
+}
+
+type gRPCWatcher struct {
+ c *etcd.Client
+ target string
+ ctx context.Context
+ cancel context.CancelFunc
+ wch etcd.WatchChan
+ err error
+}
+
+// Next gets the next set of updates from the etcd resolver.
+// Calls to Next should be serialized; concurrent calls are not safe since
+// there is no way to reconcile the update ordering.
+func (gw *gRPCWatcher) Next() ([]*naming.Update, error) {
+ if gw.wch == nil {
+ // first Next() returns all addresses
+ return gw.firstNext()
+ }
+ if gw.err != nil {
+ return nil, gw.err
+ }
+
+ // process new events on target/*
+ wr, ok := <-gw.wch
+ if !ok {
+ gw.err = status.Error(codes.Unavailable, ErrWatcherClosed.Error())
+ return nil, gw.err
+ }
+ if gw.err = wr.Err(); gw.err != nil {
+ return nil, gw.err
+ }
+
+ updates := make([]*naming.Update, 0, len(wr.Events))
+ for _, e := range wr.Events {
+ var jupdate naming.Update
+ var err error
+ switch e.Type {
+ case etcd.EventTypePut:
+ err = json.Unmarshal(e.Kv.Value, &jupdate)
+ jupdate.Op = naming.Add
+ case etcd.EventTypeDelete:
+ err = json.Unmarshal(e.PrevKv.Value, &jupdate)
+ jupdate.Op = naming.Delete
+ }
+ if err == nil {
+ updates = append(updates, &jupdate)
+ }
+ }
+ return updates, nil
+}
+
+func (gw *gRPCWatcher) firstNext() ([]*naming.Update, error) {
+ // Use serialized request so resolution still works if the target etcd
+ // server is partitioned away from the quorum.
+ resp, err := gw.c.Get(gw.ctx, gw.target, etcd.WithPrefix(), etcd.WithSerializable())
+ if gw.err = err; err != nil {
+ return nil, err
+ }
+
+ updates := make([]*naming.Update, 0, len(resp.Kvs))
+ for _, kv := range resp.Kvs {
+ var jupdate naming.Update
+ if err := json.Unmarshal(kv.Value, &jupdate); err != nil {
+ continue
+ }
+ updates = append(updates, &jupdate)
+ }
+
+ opts := []etcd.OpOption{etcd.WithRev(resp.Header.Revision + 1), etcd.WithPrefix(), etcd.WithPrevKV()}
+ gw.wch = gw.c.Watch(gw.ctx, gw.target, opts...)
+ return updates, nil
+}
+
+func (gw *gRPCWatcher) Close() { gw.cancel() }