update vendor to latest kubernetes 1.14.0

some of the kubernetes independent
packages are moved out of the tree to
new projects.

Signed-off-by: Madhu Rajanna <madhupr007@gmail.com>

vendor/google.golang.org/grpc/internal/transport/http2_client.go

@@ -91,10 +91,10 @@ type http2Client struct {
 	maxSendHeaderListSize *uint32
 
 	bdpEst *bdpEstimator
-	// onSuccess is a callback that client transport calls upon
+	// onPrefaceReceipt is a callback that client transport calls upon
 	// receiving server preface to signal that a succefull HTTP2
 	// connection was established.
-	onSuccess func()
+	onPrefaceReceipt func()
 
 	maxConcurrentStreams  uint32
 	streamQuota           int64
@@ -145,7 +145,7 @@ func isTemporary(err error) bool {
 // newHTTP2Client constructs a connected ClientTransport to addr based on HTTP2
 // and starts to receive messages on it. Non-nil error returns if construction
 // fails.
-func newHTTP2Client(connectCtx, ctx context.Context, addr TargetInfo, opts ConnectOptions, onSuccess func(), onGoAway func(GoAwayReason), onClose func()) (_ *http2Client, err error) {
+func newHTTP2Client(connectCtx, ctx context.Context, addr TargetInfo, opts ConnectOptions, onPrefaceReceipt func(), onGoAway func(GoAwayReason), onClose func()) (_ *http2Client, err error) {
 	scheme := "http"
 	ctx, cancel := context.WithCancel(ctx)
 	defer func() {
@@ -240,7 +240,7 @@ func newHTTP2Client(connectCtx, ctx context.Context, addr TargetInfo, opts Conne
 		kp:                    kp,
 		statsHandler:          opts.StatsHandler,
 		initialWindowSize:     initialWindowSize,
-		onSuccess:             onSuccess,
+		onPrefaceReceipt:      onPrefaceReceipt,
 		nextID:                1,
 		maxConcurrentStreams:  defaultMaxStreamsClient,
 		streamQuota:           defaultMaxStreamsClient,
@@ -322,7 +322,9 @@ func newHTTP2Client(connectCtx, ctx context.Context, addr TargetInfo, opts Conne
 		}
 	}
 
-	t.framer.writer.Flush()
+	if err := t.framer.writer.Flush(); err != nil {
+		return nil, err
+	}
 	go func() {
 		t.loopy = newLoopyWriter(clientSide, t.framer, t.controlBuf, t.bdpEst)
 		err := t.loopy.run()
@@ -362,6 +364,9 @@ func (t *http2Client) newStream(ctx context.Context, callHdr *CallHdr) *Stream {
 			ctx:     s.ctx,
 			ctxDone: s.ctx.Done(),
 			recv:    s.buf,
+			closeStream: func(err error) {
+				t.CloseStream(s, err)
+			},
 		},
 		windowHandler: func(n int) {
 			t.updateWindow(s, uint32(n))
@@ -414,7 +419,7 @@ func (t *http2Client) createHeaderFields(ctx context.Context, callHdr *CallHdr)
 	if dl, ok := ctx.Deadline(); ok {
 		// Send out timeout regardless its value. The server can detect timeout context by itself.
 		// TODO(mmukhi): Perhaps this field should be updated when actually writing out to the wire.
-		timeout := dl.Sub(time.Now())
+		timeout := time.Until(dl)
 		headerFields = append(headerFields, hpack.HeaderField{Name: "grpc-timeout", Value: encodeTimeout(timeout)})
 	}
 	for k, v := range authData {
@@ -780,7 +785,7 @@ func (t *http2Client) Close() error {
 		}
 		t.statsHandler.HandleConn(t.ctx, connEnd)
 	}
-	go t.onClose()
+	t.onClose()
 	return err
 }
 
@@ -1210,7 +1215,7 @@ func (t *http2Client) reader() {
 		t.Close() // this kicks off resetTransport, so must be last before return
 		return
 	}
-	t.onSuccess()
+	t.onPrefaceReceipt()
 	t.handleSettings(sf, true)
 
 	// loop to keep reading incoming messages on this transport.

vendor/google.golang.org/grpc/internal/transport/http2_server.go

@@ -1004,45 +1004,74 @@ func (t *http2Server) Close() error {
 	return err
 }
 
+// deleteStream deletes the stream s from transport's active streams.
+func (t *http2Server) deleteStream(s *Stream, eosReceived bool) {
+	t.mu.Lock()
+	if _, ok := t.activeStreams[s.id]; !ok {
+		t.mu.Unlock()
+		return
+	}
+
+	delete(t.activeStreams, s.id)
+	if len(t.activeStreams) == 0 {
+		t.idle = time.Now()
+	}
+	t.mu.Unlock()
+
+	if channelz.IsOn() {
+		if eosReceived {
+			atomic.AddInt64(&t.czData.streamsSucceeded, 1)
+		} else {
+			atomic.AddInt64(&t.czData.streamsFailed, 1)
+		}
+	}
+}
+
 // closeStream clears the footprint of a stream when the stream is not needed
 // any more.
 func (t *http2Server) closeStream(s *Stream, rst bool, rstCode http2.ErrCode, hdr *headerFrame, eosReceived bool) {
-	if s.swapState(streamDone) == streamDone {
-		// If the stream was already done, return.
-		return
-	}
+	// Mark the stream as done
+	oldState := s.swapState(streamDone)
+
 	// In case stream sending and receiving are invoked in separate
 	// goroutines (e.g., bi-directional streaming), cancel needs to be
 	// called to interrupt the potential blocking on other goroutines.
 	s.cancel()
+
+	// Deletes the stream from active streams
+	t.deleteStream(s, eosReceived)
+
 	cleanup := &cleanupStream{
 		streamID: s.id,
 		rst:      rst,
 		rstCode:  rstCode,
-		onWrite: func() {
-			t.mu.Lock()
-			if t.activeStreams != nil {
-				delete(t.activeStreams, s.id)
-				if len(t.activeStreams) == 0 {
-					t.idle = time.Now()
-				}
-			}
-			t.mu.Unlock()
-			if channelz.IsOn() {
-				if eosReceived {
-					atomic.AddInt64(&t.czData.streamsSucceeded, 1)
-				} else {
-					atomic.AddInt64(&t.czData.streamsFailed, 1)
-				}
-			}
-		},
+		onWrite:  func() {},
 	}
-	if hdr != nil {
-		hdr.cleanup = cleanup
-		t.controlBuf.put(hdr)
-	} else {
+
+	// No trailer. Puts cleanupFrame into transport's control buffer.
+	if hdr == nil {
 		t.controlBuf.put(cleanup)
+		return
 	}
+
+	// We do the check here, because of the following scenario:
+	// 1. closeStream is called first with a trailer. A trailer item with a piggybacked cleanup item
+	// is put to control buffer.
+	// 2. Loopy writer is waiting on a stream quota. It will never get it because client errored at
+	// some point. So loopy can't act on trailer
+	// 3. Client sends a RST_STREAM due to the error. Then closeStream is called without a trailer as
+	// the result of the received RST_STREAM.
+	// If we do this check at the beginning of the closeStream, then we won't put a cleanup item in
+	// response to received RST_STREAM into the control buffer and outStream in loopy writer will
+	// never get cleaned up.
+
+	// If the stream is already done, don't send the trailer.
+	if oldState == streamDone {
+		return
+	}
+
+	hdr.cleanup = cleanup
+	t.controlBuf.put(hdr)
 }
 
 func (t *http2Server) RemoteAddr() net.Addr {
@@ -1155,7 +1184,7 @@ func (t *http2Server) IncrMsgRecv() {
 }
 
 func (t *http2Server) getOutFlowWindow() int64 {
-	resp := make(chan uint32)
+	resp := make(chan uint32, 1)
 	timer := time.NewTimer(time.Second)
 	defer timer.Stop()
 	t.controlBuf.put(&outFlowControlSizeRequest{resp})

vendor/google.golang.org/grpc/internal/transport/transport.go

@@ -110,15 +110,15 @@ func (b *recvBuffer) get() <-chan recvMsg {
 	return b.c
 }
 
-//
 // recvBufferReader implements io.Reader interface to read the data from
 // recvBuffer.
 type recvBufferReader struct {
-	ctx     context.Context
-	ctxDone <-chan struct{} // cache of ctx.Done() (for performance).
-	recv    *recvBuffer
-	last    []byte // Stores the remaining data in the previous calls.
-	err     error
+	closeStream func(error) // Closes the client transport stream with the given error and nil trailer metadata.
+	ctx         context.Context
+	ctxDone     <-chan struct{} // cache of ctx.Done() (for performance).
+	recv        *recvBuffer
+	last        []byte // Stores the remaining data in the previous calls.
+	err         error
 }
 
 // Read reads the next len(p) bytes from last. If last is drained, it tries to
@@ -128,31 +128,53 @@ func (r *recvBufferReader) Read(p []byte) (n int, err error) {
 	if r.err != nil {
 		return 0, r.err
 	}
-	n, r.err = r.read(p)
-	return n, r.err
-}
-
-func (r *recvBufferReader) read(p []byte) (n int, err error) {
 	if r.last != nil && len(r.last) > 0 {
 		// Read remaining data left in last call.
 		copied := copy(p, r.last)
 		r.last = r.last[copied:]
 		return copied, nil
 	}
+	if r.closeStream != nil {
+		n, r.err = r.readClient(p)
+	} else {
+		n, r.err = r.read(p)
+	}
+	return n, r.err
+}
+
+func (r *recvBufferReader) read(p []byte) (n int, err error) {
 	select {
 	case <-r.ctxDone:
 		return 0, ContextErr(r.ctx.Err())
 	case m := <-r.recv.get():
-		r.recv.load()
-		if m.err != nil {
-			return 0, m.err
-		}
-		copied := copy(p, m.data)
-		r.last = m.data[copied:]
-		return copied, nil
+		return r.readAdditional(m, p)
 	}
 }
 
+func (r *recvBufferReader) readClient(p []byte) (n int, err error) {
+	// If the context is canceled, then closes the stream with nil metadata.
+	// closeStream writes its error parameter to r.recv as a recvMsg.
+	// r.readAdditional acts on that message and returns the necessary error.
+	select {
+	case <-r.ctxDone:
+		r.closeStream(ContextErr(r.ctx.Err()))
+		m := <-r.recv.get()
+		return r.readAdditional(m, p)
+	case m := <-r.recv.get():
+		return r.readAdditional(m, p)
+	}
+}
+
+func (r *recvBufferReader) readAdditional(m recvMsg, p []byte) (n int, err error) {
+	r.recv.load()
+	if m.err != nil {
+		return 0, m.err
+	}
+	copied := copy(p, m.data)
+	r.last = m.data[copied:]
+	return copied, nil
+}
+
 type streamState uint32
 
 const (
@@ -511,8 +533,8 @@ type TargetInfo struct {
 
 // NewClientTransport establishes the transport with the required ConnectOptions
 // and returns it to the caller.
-func NewClientTransport(connectCtx, ctx context.Context, target TargetInfo, opts ConnectOptions, onSuccess func(), onGoAway func(GoAwayReason), onClose func()) (ClientTransport, error) {
-	return newHTTP2Client(connectCtx, ctx, target, opts, onSuccess, onGoAway, onClose)
+func NewClientTransport(connectCtx, ctx context.Context, target TargetInfo, opts ConnectOptions, onPrefaceReceipt func(), onGoAway func(GoAwayReason), onClose func()) (ClientTransport, error) {
+	return newHTTP2Client(connectCtx, ctx, target, opts, onPrefaceReceipt, onGoAway, onClose)
 }
 
 // Options provides additional hints and information for message