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/rafthttp/snapshot_sender.go b/vendor/github.com/coreos/etcd/rafthttp/snapshot_sender.go
new file mode 100644
index 0000000..24eb535
--- /dev/null
+++ b/vendor/github.com/coreos/etcd/rafthttp/snapshot_sender.go
@@ -0,0 +1,164 @@
+// Copyright 2015 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 rafthttp
+
+import (
+ "bytes"
+ "context"
+ "io"
+ "io/ioutil"
+ "net/http"
+ "time"
+
+ "github.com/coreos/etcd/pkg/httputil"
+ pioutil "github.com/coreos/etcd/pkg/ioutil"
+ "github.com/coreos/etcd/pkg/types"
+ "github.com/coreos/etcd/raft"
+ "github.com/coreos/etcd/snap"
+)
+
+var (
+ // timeout for reading snapshot response body
+ snapResponseReadTimeout = 5 * time.Second
+)
+
+type snapshotSender struct {
+ from, to types.ID
+ cid types.ID
+
+ tr *Transport
+ picker *urlPicker
+ status *peerStatus
+ r Raft
+ errorc chan error
+
+ stopc chan struct{}
+}
+
+func newSnapshotSender(tr *Transport, picker *urlPicker, to types.ID, status *peerStatus) *snapshotSender {
+ return &snapshotSender{
+ from: tr.ID,
+ to: to,
+ cid: tr.ClusterID,
+ tr: tr,
+ picker: picker,
+ status: status,
+ r: tr.Raft,
+ errorc: tr.ErrorC,
+ stopc: make(chan struct{}),
+ }
+}
+
+func (s *snapshotSender) stop() { close(s.stopc) }
+
+func (s *snapshotSender) send(merged snap.Message) {
+ start := time.Now()
+
+ m := merged.Message
+ to := types.ID(m.To).String()
+
+ body := createSnapBody(merged)
+ defer body.Close()
+
+ u := s.picker.pick()
+ req := createPostRequest(u, RaftSnapshotPrefix, body, "application/octet-stream", s.tr.URLs, s.from, s.cid)
+
+ plog.Infof("start to send database snapshot [index: %d, to %s]...", m.Snapshot.Metadata.Index, types.ID(m.To))
+
+ err := s.post(req)
+ defer merged.CloseWithError(err)
+ if err != nil {
+ plog.Warningf("database snapshot [index: %d, to: %s] failed to be sent out (%v)", m.Snapshot.Metadata.Index, types.ID(m.To), err)
+
+ // errMemberRemoved is a critical error since a removed member should
+ // always be stopped. So we use reportCriticalError to report it to errorc.
+ if err == errMemberRemoved {
+ reportCriticalError(err, s.errorc)
+ }
+
+ s.picker.unreachable(u)
+ s.status.deactivate(failureType{source: sendSnap, action: "post"}, err.Error())
+ s.r.ReportUnreachable(m.To)
+ // report SnapshotFailure to raft state machine. After raft state
+ // machine knows about it, it would pause a while and retry sending
+ // new snapshot message.
+ s.r.ReportSnapshot(m.To, raft.SnapshotFailure)
+ sentFailures.WithLabelValues(to).Inc()
+ snapshotSendFailures.WithLabelValues(to).Inc()
+ return
+ }
+ s.status.activate()
+ s.r.ReportSnapshot(m.To, raft.SnapshotFinish)
+ plog.Infof("database snapshot [index: %d, to: %s] sent out successfully", m.Snapshot.Metadata.Index, types.ID(m.To))
+
+ sentBytes.WithLabelValues(to).Add(float64(merged.TotalSize))
+
+ snapshotSend.WithLabelValues(to).Inc()
+ snapshotSendSeconds.WithLabelValues(to).Observe(time.Since(start).Seconds())
+}
+
+// post posts the given request.
+// It returns nil when request is sent out and processed successfully.
+func (s *snapshotSender) post(req *http.Request) (err error) {
+ ctx, cancel := context.WithCancel(context.Background())
+ req = req.WithContext(ctx)
+ defer cancel()
+
+ type responseAndError struct {
+ resp *http.Response
+ body []byte
+ err error
+ }
+ result := make(chan responseAndError, 1)
+
+ go func() {
+ resp, err := s.tr.pipelineRt.RoundTrip(req)
+ if err != nil {
+ result <- responseAndError{resp, nil, err}
+ return
+ }
+
+ // close the response body when timeouts.
+ // prevents from reading the body forever when the other side dies right after
+ // successfully receives the request body.
+ time.AfterFunc(snapResponseReadTimeout, func() { httputil.GracefulClose(resp) })
+ body, err := ioutil.ReadAll(resp.Body)
+ result <- responseAndError{resp, body, err}
+ }()
+
+ select {
+ case <-s.stopc:
+ return errStopped
+ case r := <-result:
+ if r.err != nil {
+ return r.err
+ }
+ return checkPostResponse(r.resp, r.body, req, s.to)
+ }
+}
+
+func createSnapBody(merged snap.Message) io.ReadCloser {
+ buf := new(bytes.Buffer)
+ enc := &messageEncoder{w: buf}
+ // encode raft message
+ if err := enc.encode(&merged.Message); err != nil {
+ plog.Panicf("encode message error (%v)", err)
+ }
+
+ return &pioutil.ReaderAndCloser{
+ Reader: io.MultiReader(buf, merged.ReadCloser),
+ Closer: merged.ReadCloser,
+ }
+}