Update godeps

vendor/k8s.io/kubernetes/pkg/client/unversioned/clientcmd/client_config.go

@@ -329,7 +329,7 @@ func (config *DirectClientConfig) getCluster() clientcmdapi.Cluster {
 	clusterInfoName := config.getClusterName()
 
 	var mergedClusterInfo clientcmdapi.Cluster
-	mergo.Merge(&mergedClusterInfo, DefaultCluster)
+	mergo.Merge(&mergedClusterInfo, config.overrides.ClusterDefaults)
 	mergo.Merge(&mergedClusterInfo, EnvVarCluster)
 	if configClusterInfo, exists := clusterInfos[clusterInfoName]; exists {
 		mergo.Merge(&mergedClusterInfo, configClusterInfo)
@@ -350,6 +350,8 @@ func (config *DirectClientConfig) getCluster() clientcmdapi.Cluster {
 // inClusterClientConfig makes a config that will work from within a kubernetes cluster container environment.
 type inClusterClientConfig struct{}
 
+var _ ClientConfig = inClusterClientConfig{}
+
 func (inClusterClientConfig) RawConfig() (clientcmdapi.Config, error) {
 	return clientcmdapi.Config{}, fmt.Errorf("inCluster environment config doesn't support multiple clusters")
 }
@@ -358,21 +360,21 @@ func (inClusterClientConfig) ClientConfig() (*restclient.Config, error) {
 	return restclient.InClusterConfig()
 }
 
-func (inClusterClientConfig) Namespace() (string, error) {
+func (inClusterClientConfig) Namespace() (string, bool, error) {
 	// This way assumes you've set the POD_NAMESPACE environment variable using the downward API.
 	// This check has to be done first for backwards compatibility with the way InClusterConfig was originally set up
 	if ns := os.Getenv("POD_NAMESPACE"); ns != "" {
-		return ns, nil
+		return ns, true, nil
 	}
 
 	// Fall back to the namespace associated with the service account token, if available
 	if data, err := ioutil.ReadFile("/var/run/secrets/kubernetes.io/serviceaccount/namespace"); err == nil {
 		if ns := strings.TrimSpace(string(data)); len(ns) > 0 {
-			return ns, nil
+			return ns, true, nil
 		}
 	}
 
-	return "default", nil
+	return "default", false, nil
 }
 
 func (inClusterClientConfig) ConfigAccess() ConfigAccess {

vendor/k8s.io/kubernetes/pkg/client/unversioned/clientcmd/merged_client_builder.go

@@ -21,8 +21,6 @@ import (
 	"reflect"
 	"sync"
 
-	"github.com/golang/glog"
-
 	"k8s.io/kubernetes/pkg/client/restclient"
 	clientcmdapi "k8s.io/kubernetes/pkg/client/unversioned/clientcmd/api"
 )
@@ -39,16 +37,25 @@ type DeferredLoadingClientConfig struct {
 
 	clientConfig ClientConfig
 	loadingLock  sync.Mutex
+
+	// provided for testing
+	icc InClusterConfig
+}
+
+// InClusterConfig abstracts details of whether the client is running in a cluster for testing.
+type InClusterConfig interface {
+	ClientConfig
+	Possible() bool
 }
 
 // NewNonInteractiveDeferredLoadingClientConfig creates a ConfigClientClientConfig using the passed context name
 func NewNonInteractiveDeferredLoadingClientConfig(loader ClientConfigLoader, overrides *ConfigOverrides) ClientConfig {
-	return &DeferredLoadingClientConfig{loader: loader, overrides: overrides}
+	return &DeferredLoadingClientConfig{loader: loader, overrides: overrides, icc: inClusterClientConfig{}}
 }
 
 // NewInteractiveDeferredLoadingClientConfig creates a ConfigClientClientConfig using the passed context name and the fallback auth reader
 func NewInteractiveDeferredLoadingClientConfig(loader ClientConfigLoader, overrides *ConfigOverrides, fallbackReader io.Reader) ClientConfig {
-	return &DeferredLoadingClientConfig{loader: loader, overrides: overrides, fallbackReader: fallbackReader}
+	return &DeferredLoadingClientConfig{loader: loader, overrides: overrides, icc: inClusterClientConfig{}, fallbackReader: fallbackReader}
 }
 
 func (config *DeferredLoadingClientConfig) createClientConfig() (ClientConfig, error) {
@@ -92,18 +99,35 @@ func (config *DeferredLoadingClientConfig) ClientConfig() (*restclient.Config, e
 		return nil, err
 	}
 
+	// load the configuration and return on non-empty errors and if the
+	// content differs from the default config
 	mergedConfig, err := mergedClientConfig.ClientConfig()
-	if err != nil {
+	switch {
+	case err != nil && !IsEmptyConfig(err):
+		// return on any error except empty config
 		return nil, err
+	case mergedConfig != nil:
+		// if the configuration has any settings at all, we cannot use ICC
+		// TODO: we need to discriminate better between "empty due to env" and
+		//   "empty due to defaults"
+		// TODO: this shouldn't be a global - the client config rules should be
+		//   handling this.
+		defaultConfig, defErr := DefaultClientConfig.ClientConfig()
+		if IsConfigurationInvalid(defErr) && !IsEmptyConfig(err) {
+			return mergedConfig, nil
+		}
+		if defErr == nil && !reflect.DeepEqual(mergedConfig, defaultConfig) {
+			return mergedConfig, nil
+		}
 	}
-	// Are we running in a cluster and were no other configs found? If so, use the in-cluster-config.
-	icc := inClusterClientConfig{}
-	defaultConfig, err := DefaultClientConfig.ClientConfig()
-	if icc.Possible() && err == nil && reflect.DeepEqual(mergedConfig, defaultConfig) {
-		glog.V(2).Info("No kubeconfig could be created, falling back to service account.")
-		return icc.ClientConfig()
+
+	// check for in-cluster configuration and use it
+	if config.icc.Possible() {
+		return config.icc.ClientConfig()
 	}
-	return mergedConfig, nil
+
+	// return the result of the merged client config
+	return mergedConfig, err
 }
 
 // Namespace implements KubeConfig

vendor/k8s.io/kubernetes/pkg/client/unversioned/clientcmd/overrides.go

@@ -27,10 +27,12 @@ import (
 // ConfigOverrides holds values that should override whatever information is pulled from the actual Config object.  You can't
 // simply use an actual Config object, because Configs hold maps, but overrides are restricted to "at most one"
 type ConfigOverrides struct {
-	AuthInfo       clientcmdapi.AuthInfo
-	ClusterInfo    clientcmdapi.Cluster
-	Context        clientcmdapi.Context
-	CurrentContext string
+	AuthInfo clientcmdapi.AuthInfo
+	// ClusterDefaults are applied before the configured cluster info is loaded.
+	ClusterDefaults clientcmdapi.Cluster
+	ClusterInfo     clientcmdapi.Cluster
+	Context         clientcmdapi.Context
+	CurrentContext  string
 }
 
 // ConfigOverrideFlags holds the flag names to be used for binding command line flags.  Notice that this structure tightly