Update daemon to new swarmkit

Signed-off-by: Tonis Tiigi <tonistiigi@gmail.com>

daemon/cluster/cluster.go

@@ -111,7 +111,7 @@ func New(config Config) (*Cluster, error) {
 	select {
 	case <-time.After(swarmConnectTimeout):
 		logrus.Errorf("swarm component could not be started before timeout was reached")
-	case <-n.Ready(context.Background()):
+	case <-n.Ready():
 	case <-ctx.Done():
 	}
 	if ctx.Err() != nil {
@@ -213,7 +213,7 @@ func (c *Cluster) startNewNode(forceNewCluster bool, listenAddr, joinAddr, secre
 
 	go func() {
 		select {
-		case <-node.Ready(context.Background()):
+		case <-node.Ready():
 			c.Lock()
 			c.reconnectDelay = initialReconnectDelay
 			c.Unlock()
@@ -273,7 +273,7 @@ func (c *Cluster) Init(req types.InitRequest) (string, error) {
 	c.Unlock()
 
 	select {
-	case <-n.Ready(context.Background()):
+	case <-n.Ready():
 		if err := initAcceptancePolicy(n, req.Spec.AcceptancePolicy); err != nil {
 			return "", err
 		}
@@ -319,7 +319,7 @@ func (c *Cluster) Join(req types.JoinRequest) error {
 			return fmt.Errorf("Timeout reached before node was joined. Your cluster settings may be preventing this node from automatically joining. To accept this node into cluster run `docker node accept %v` in an existing cluster manager", nodeid)
 		}
 		return ErrSwarmJoinTimeoutReached
-	case <-n.Ready(context.Background()):
+	case <-n.Ready():
 		go c.reconnectOnFailure(ctx)
 		return nil
 	case <-ctx.Done():

daemon/cluster/executor/container/adapter.go

@@ -39,7 +39,7 @@ func newContainerAdapter(b executorpkg.Backend, task *api.Task) (*containerAdapt
 
 func (c *containerAdapter) pullImage(ctx context.Context) error {
 	// if the image needs to be pulled, the auth config will be retrieved and updated
-	encodedAuthConfig := c.container.task.ServiceAnnotations.Labels[fmt.Sprintf("%v.registryauth", systemLabelPrefix)]
+	encodedAuthConfig := c.container.spec().RegistryAuth
 
 	authConfig := &types.AuthConfig{}
 	if encodedAuthConfig != "" {

daemon/cluster/executor/container/controller.go

@@ -2,13 +2,13 @@ package container
 
 import (
 	"fmt"
-	"strings"
 
 	executorpkg "github.com/docker/docker/daemon/cluster/executor"
 	"github.com/docker/engine-api/types"
 	"github.com/docker/swarmkit/agent/exec"
 	"github.com/docker/swarmkit/api"
 	"github.com/docker/swarmkit/log"
+	"github.com/pkg/errors"
 	"golang.org/x/net/context"
 )
 
@@ -84,31 +84,32 @@ func (r *controller) Prepare(ctx context.Context) error {
 		return err
 	}
 
-	for {
-		if err := r.checkClosed(); err != nil {
-			return err
-		}
-		if err := r.adapter.create(ctx, r.backend); err != nil {
-			if isContainerCreateNameConflict(err) {
-				if _, err := r.adapter.inspect(ctx); err != nil {
-					return err
-				}
-
-				// container is already created. success!
-				return exec.ErrTaskPrepared
-			}
+	if err := r.adapter.pullImage(ctx); err != nil {
+		// NOTE(stevvooe): We always try to pull the image to make sure we have
+		// the most up to date version. This will return an error, but we only
+		// log it. If the image truly doesn't exist, the create below will
+		// error out.
+		//
+		// This gives us some nice behavior where we use up to date versions of
+		// mutable tags, but will still run if the old image is available but a
+		// registry is down.
+		//
+		// If you don't want this behavior, lock down your image to an
+		// immutable tag or digest.
+		log.G(ctx).WithError(err).Error("pulling image failed")
+	}
 
-			if !strings.Contains(err.Error(), "No such image") { // todo: better error detection
-				return err
-			}
-			if err := r.adapter.pullImage(ctx); err != nil {
+	if err := r.adapter.create(ctx, r.backend); err != nil {
+		if isContainerCreateNameConflict(err) {
+			if _, err := r.adapter.inspect(ctx); err != nil {
 				return err
 			}
 
-			continue // retry to create the container
+			// container is already created. success!
+			return exec.ErrTaskPrepared
 		}
 
-		break
+		return err
 	}
 
 	return nil
@@ -135,7 +136,7 @@ func (r *controller) Start(ctx context.Context) error {
 	}
 
 	if err := r.adapter.start(ctx); err != nil {
-		return err
+		return errors.Wrap(err, "starting container failed")
 	}
 
 	return nil