Update cadvisor to 6116f265302357cbb10f84737af30b1f13ce2d6c

Signed-off-by: Lantao Liu <lantaol@google.com>

vendor/github.com/google/cadvisor/manager/manager.go

@@ -50,6 +50,7 @@ import (
 
 	"github.com/golang/glog"
 	"github.com/opencontainers/runc/libcontainer/cgroups"
+	"golang.org/x/net/context"
 	"k8s.io/utils/clock"
 )
 
@@ -59,6 +60,8 @@ var eventStorageAgeLimit = flag.String("event_storage_age_limit", "default=24h",
 var eventStorageEventLimit = flag.String("event_storage_event_limit", "default=100000", "Max number of events to store (per type). Value is a comma separated list of key values, where the keys are event types (e.g.: creation, oom) or \"default\" and the value is an integer. Default is applied to all non-specified event types")
 var applicationMetricsCountLimit = flag.Int("application_metrics_count_limit", 100, "Max number of application metrics to store (per container)")
 
+const dockerClientTimeout = 10 * time.Second
+
 // The Manager interface defines operations for starting a manager and getting
 // container and machine information.
 type Manager interface {
@@ -154,11 +157,10 @@ func New(memoryCache *memory.InMemoryCache, sysfs sysfs.SysFs, maxHousekeepingIn
 		dockerStatus info.DockerStatus
 		rktPath      string
 	)
-	if tempDockerStatus, err := docker.Status(); err != nil {
-		glog.V(5).Infof("Docker not connected: %v", err)
-	} else {
-		dockerStatus = tempDockerStatus
-	}
+	docker.SetTimeout(dockerClientTimeout)
+	// Try to connect to docker indefinitely on startup.
+	dockerStatus = retryDockerStatus()
+
 	if tmpRktPath, err := rkt.RktPath(); err != nil {
 		glog.V(5).Infof("Rkt not connected: %v", err)
 	} else {
@@ -234,6 +236,31 @@ func New(memoryCache *memory.InMemoryCache, sysfs sysfs.SysFs, maxHousekeepingIn
 	return newManager, nil
 }
 
+func retryDockerStatus() info.DockerStatus {
+	startupTimeout := dockerClientTimeout
+	maxTimeout := 4 * startupTimeout
+	for {
+		ctx, _ := context.WithTimeout(context.Background(), startupTimeout)
+		dockerStatus, err := docker.StatusWithContext(ctx)
+		if err != nil {
+			return dockerStatus
+		}
+
+		switch err {
+		case context.DeadlineExceeded:
+			glog.Warningf("Timeout trying to communicate with docker during initialization, will retry")
+		default:
+			glog.V(5).Infof("Docker not connected: %v", err)
+			return info.DockerStatus{}
+		}
+
+		startupTimeout = 2 * startupTimeout
+		if startupTimeout > maxTimeout {
+			startupTimeout = maxTimeout
+		}
+	}
+}
+
 // A namespaced container name.
 type namespacedContainerName struct {
 	// The namespace of the container. Can be empty for the root namespace.