Update go dependencies

vendor/google.golang.org/grpc/clientconn.go

@@ -869,6 +869,7 @@ func (ac *addrConn) errorf(format string, a ...interface{}) {
 
 // resetTransport recreates a transport to the address for ac.  The old
 // transport will close itself on error or when the clientconn is closed.
+//
 // TODO(bar) make sure all state transitions are valid.
 func (ac *addrConn) resetTransport() error {
 	ac.mu.Lock()
@@ -876,12 +877,6 @@ func (ac *addrConn) resetTransport() error {
 		ac.mu.Unlock()
 		return errConnClosing
 	}
-	ac.state = connectivity.TransientFailure
-	if ac.cc.balancerWrapper != nil {
-		ac.cc.balancerWrapper.handleSubConnStateChange(ac.acbw, ac.state)
-	} else {
-		ac.cc.csMgr.updateState(ac.state)
-	}
 	if ac.ready != nil {
 		close(ac.ready)
 		ac.ready = nil
@@ -905,12 +900,14 @@ func (ac *addrConn) resetTransport() error {
 			return errConnClosing
 		}
 		ac.printf("connecting")
-		ac.state = connectivity.Connecting
-		// TODO(bar) remove condition once we always have a balancer.
-		if ac.cc.balancerWrapper != nil {
-			ac.cc.balancerWrapper.handleSubConnStateChange(ac.acbw, ac.state)
-		} else {
-			ac.cc.csMgr.updateState(ac.state)
+		if ac.state != connectivity.Connecting {
+			ac.state = connectivity.Connecting
+			// TODO(bar) remove condition once we always have a balancer.
+			if ac.cc.balancerWrapper != nil {
+				ac.cc.balancerWrapper.handleSubConnStateChange(ac.acbw, ac.state)
+			} else {
+				ac.cc.csMgr.updateState(ac.state)
+			}
 		}
 		// copy ac.addrs in case of race
 		addrsIter := make([]resolver.Address, len(ac.addrs))
@@ -1013,6 +1010,21 @@ func (ac *addrConn) transportMonitor() {
 			ac.adjustParams(t.GetGoAwayReason())
 		default:
 		}
+		ac.mu.Lock()
+		if ac.state == connectivity.Shutdown {
+			ac.mu.Unlock()
+			return
+		}
+		// Set connectivity state to TransientFailure before calling
+		// resetTransport. Transition READY->CONNECTING is not valid.
+		ac.state = connectivity.TransientFailure
+		if ac.cc.balancerWrapper != nil {
+			ac.cc.balancerWrapper.handleSubConnStateChange(ac.acbw, ac.state)
+		} else {
+			ac.cc.csMgr.updateState(ac.state)
+		}
+		ac.curAddr = resolver.Address{}
+		ac.mu.Unlock()
 		if err := ac.resetTransport(); err != nil {
 			ac.mu.Lock()
 			ac.printf("transport exiting: %v", err)

vendor/google.golang.org/grpc/pickfirst_test.go

@@ -128,7 +128,7 @@ func TestNewAddressWhileBlockingPickfirst(t *testing.T) {
 		go func() {
 			defer wg.Done()
 			// This RPC blocks until NewAddress is called.
-			Invoke(context.Background(), "/foo/bar", &req, &reply, cc, FailFast(false))
+			Invoke(context.Background(), "/foo/bar", &req, &reply, cc)
 		}()
 	}
 	time.Sleep(50 * time.Millisecond)
@@ -165,7 +165,7 @@ func TestCloseWithPendingRPCPickfirst(t *testing.T) {
 		go func() {
 			defer wg.Done()
 			// This RPC blocks until NewAddress is called.
-			Invoke(context.Background(), "/foo/bar", &req, &reply, cc, FailFast(false))
+			Invoke(context.Background(), "/foo/bar", &req, &reply, cc)
 		}()
 	}
 	time.Sleep(50 * time.Millisecond)

vendor/google.golang.org/grpc/proxy_test.go

@@ -1,3 +1,5 @@
+// +build !race
+
 /*
  *
  * Copyright 2017 gRPC authors.

vendor/google.golang.org/grpc/rpc_util.go

@@ -567,6 +567,6 @@ const SupportPackageIsVersion3 = true
 const SupportPackageIsVersion4 = true
 
 // Version is the current grpc version.
-const Version = "1.7.0"
+const Version = "1.7.2"
 
 const grpcUA = "grpc-go/" + Version