Update godeps

vendor/github.com/coreos/etcd/clientv3/balancer.go

@@ -45,6 +45,8 @@ type simpleBalancer struct {
 	// pinAddr is the currently pinned address; set to the empty string on
 	// intialization and shutdown.
 	pinAddr string
+
+	closed bool
 }
 
 func newSimpleBalancer(eps []string) *simpleBalancer {
@@ -74,15 +76,25 @@ func (b *simpleBalancer) ConnectNotify() <-chan struct{} {
 
 func (b *simpleBalancer) Up(addr grpc.Address) func(error) {
 	b.mu.Lock()
+	defer b.mu.Unlock()
+
+	// gRPC might call Up after it called Close. We add this check
+	// to "fix" it up at application layer. Or our simplerBalancer
+	// might panic since b.upc is closed.
+	if b.closed {
+		return func(err error) {}
+	}
+
 	if len(b.upEps) == 0 {
 		// notify waiting Get()s and pin first connected address
 		close(b.upc)
 		b.pinAddr = addr.Addr
 	}
 	b.upEps[addr.Addr] = struct{}{}
-	b.mu.Unlock()
+
 	// notify client that a connection is up
 	b.readyOnce.Do(func() { close(b.readyc) })
+
 	return func(err error) {
 		b.mu.Lock()
 		delete(b.upEps, addr.Addr)
@@ -128,13 +140,19 @@ func (b *simpleBalancer) Notify() <-chan []grpc.Address { return b.notifyCh }
 
 func (b *simpleBalancer) Close() error {
 	b.mu.Lock()
+	defer b.mu.Unlock()
+	// In case gRPC calls close twice. TODO: remove the checking
+	// when we are sure that gRPC wont call close twice.
+	if b.closed {
+		return nil
+	}
+	b.closed = true
 	close(b.notifyCh)
 	// terminate all waiting Get()s
 	b.pinAddr = ""
 	if len(b.upEps) == 0 {
 		close(b.upc)
 	}
-	b.mu.Unlock()
 	return nil
 }
 

vendor/github.com/coreos/etcd/clientv3/watch.go

@@ -669,6 +669,10 @@ func (w *watchGrpcStream) resumeWatchers(wc pb.Watch_WatchClient) error {
 	w.mu.RUnlock()
 
 	for _, ws := range streams {
+		// drain recvc so no old WatchResponses (e.g., Created messages)
+		// are processed while resuming
+		ws.drain()
+
 		// pause serveStream
 		ws.resumec <- -1
 
@@ -701,6 +705,17 @@ func (w *watchGrpcStream) resumeWatchers(wc pb.Watch_WatchClient) error {
 	return nil
 }
 
+// drain removes all buffered WatchResponses from the stream's receive channel.
+func (ws *watcherStream) drain() {
+	for {
+		select {
+		case <-ws.recvc:
+		default:
+			return
+		}
+	}
+}
+
 // toPB converts an internal watch request structure to its protobuf messagefunc (wr *watchRequest)
 func (wr *watchRequest) toPB() *pb.WatchRequest {
 	req := &pb.WatchCreateRequest{

vendor/github.com/coreos/etcd/pkg/fileutil/dir_unix.go

@@ -0,0 +1,22 @@
+// 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.
+
+// +build !windows
+
+package fileutil
+
+import "os"
+
+// OpenDir opens a directory for syncing.
+func OpenDir(path string) (*os.File, error) { return os.Open(path) }

vendor/github.com/coreos/etcd/pkg/fileutil/dir_windows.go

@@ -0,0 +1,46 @@
+// 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.
+
+// +build windows
+
+package fileutil
+
+import (
+	"os"
+	"syscall"
+)
+
+// OpenDir opens a directory in windows with write access for syncing.
+func OpenDir(path string) (*os.File, error) {
+	fd, err := openDir(path)
+	if err != nil {
+		return nil, err
+	}
+	return os.NewFile(uintptr(fd), path), nil
+}
+
+func openDir(path string) (fd syscall.Handle, err error) {
+	if len(path) == 0 {
+		return syscall.InvalidHandle, syscall.ERROR_FILE_NOT_FOUND
+	}
+	pathp, err := syscall.UTF16PtrFromString(path)
+	if err != nil {
+		return syscall.InvalidHandle, err
+	}
+	access := uint32(syscall.GENERIC_READ | syscall.GENERIC_WRITE)
+	sharemode := uint32(syscall.FILE_SHARE_READ | syscall.FILE_SHARE_WRITE)
+	createmode := uint32(syscall.OPEN_EXISTING)
+	fl := uint32(syscall.FILE_FLAG_BACKUP_SEMANTICS)
+	return syscall.CreateFile(pathp, access, sharemode, nil, createmode, fl, 0)
+}

vendor/github.com/coreos/etcd/pkg/fileutil/fileutil.go

@@ -96,3 +96,26 @@ func Exist(name string) bool {
 	_, err := os.Stat(name)
 	return err == nil
 }
+
+// ZeroToEnd zeros a file starting from SEEK_CUR to its SEEK_END. May temporarily
+// shorten the length of the file.
+func ZeroToEnd(f *os.File) error {
+	// TODO: support FALLOC_FL_ZERO_RANGE
+	off, err := f.Seek(0, os.SEEK_CUR)
+	if err != nil {
+		return err
+	}
+	lenf, lerr := f.Seek(0, os.SEEK_END)
+	if lerr != nil {
+		return lerr
+	}
+	if err = f.Truncate(off); err != nil {
+		return err
+	}
+	// make sure blocks remain allocated
+	if err = Preallocate(f, lenf, true); err != nil {
+		return err
+	}
+	_, err = f.Seek(off, os.SEEK_SET)
+	return err
+}