Modify "kubectl get events" to print FieldPath so BoundPod events for the same Pod but different containers can be differentiated

pkg/api/types.go

@@ -975,10 +975,11 @@ type ObjectReference struct {
 	ResourceVersion string `json:"resourceVersion,omitempty"`
 
 	// Optional. If referring to a piece of an object instead of an entire object, this string
-	// should contain a valid field access statement. For example,
+	// should contain information to identify the sub-object. For example, if the object
-	// if the object reference is to a container within a pod, this would take on a value like:
+	// reference is to a container within a pod, this would take on a value like:
-	// "desiredState.manifest.containers[2]". Such statements are valid language constructs in
+	// "spec.containers{name}" (where "name" refers to the name of the container that triggered
-	// both go and JavaScript. This is syntax is chosen only to have some well-defined way of
+	// the event) or if no container name is specified "spec.containers[2]" (container with
+	// index 2 in this pod). This syntax is chosen only to have some well-defined way of
 	// referencing a part of an object.
 	// TODO: this design is not final and this field is subject to change in the future.
 	FieldPath string `json:"fieldPath,omitempty"`

pkg/api/v1beta1/types.go

@@ -777,10 +777,11 @@ type ObjectReference struct {
 	ResourceVersion string `json:"resourceVersion,omitempty" description:"specific resourceVersion to which this reference is made, if any"`
 
 	// Optional. If referring to a piece of an object instead of an entire object, this string
-	// should contain a valid field access statement. For example,
+	// should contain information to identify the sub-object. For example, if the object
-	// if the object reference is to a container within a pod, this would take on a value like:
+	// reference is to a container within a pod, this would take on a value like:
-	// "desiredState.manifest.containers[2]". Such statements are valid language constructs in
+	// "spec.containers{name}" (where "name" refers to the name of the container that triggered
-	// both go and JavaScript. This is syntax is chosen only to have some well-defined way of
+	// the event) or if no container name is specified "spec.containers[2]" (container with
+	// index 2 in this pod). This syntax is chosen only to have some well-defined way of
 	// referencing a part of an object.
 	// TODO: this design is not final and this field is subject to change in the future.
 	FieldPath string `json:"fieldPath,omitempty" description:"if referring to a piece of an object instead of an entire object, this string should contain a valid JSON/Go field access statement, such as desiredState.manifest.containers[2]"`

pkg/api/v1beta2/types.go

@@ -750,10 +750,11 @@ type ObjectReference struct {
 	ResourceVersion string `json:"resourceVersion,omitempty" description:"specific resourceVersion to which this reference is made, if any"`
 
 	// Optional. If referring to a piece of an object instead of an entire object, this string
-	// should contain a valid field access statement. For example,
+	// should contain information to identify the sub-object. For example, if the object
-	// if the object reference is to a container within a pod, this would take on a value like:
+	// reference is to a container within a pod, this would take on a value like:
-	// "desiredState.manifest.containers[2]". Such statements are valid language constructs in
+	// "spec.containers{name}" (where "name" refers to the name of the container that triggered
-	// both go and JavaScript. This is syntax is chosen only to have some well-defined way of
+	// the event) or if no container name is specified "spec.containers[2]" (container with
+	// index 2 in this pod). This syntax is chosen only to have some well-defined way of
 	// referencing a part of an object.
 	// TODO: this design is not final and this field is subject to change in the future.
 	FieldPath string `json:"fieldPath,omitempty" description:"if referring to a piece of an object instead of an entire object, this string should contain a valid JSON/Go field access statement, such as desiredState.manifest.containers[2]"`

pkg/api/v1beta3/types.go

@@ -993,10 +993,11 @@ type ObjectReference struct {
 	ResourceVersion string `json:"resourceVersion,omitempty"`
 
 	// Optional. If referring to a piece of an object instead of an entire object, this string
-	// should contain a valid field access statement. For example,
+	// should contain information to identify the sub-object. For example, if the object
-	// if the object reference is to a container within a pod, this would take on a value like:
+	// reference is to a container within a pod, this would take on a value like:
-	// "spec.containers[2]". Such statements are valid language constructs in
+	// "spec.containers{name}" (where "name" refers to the name of the container that triggered
-	// both go and JavaScript. This is syntax is chosen only to have some well-defined way of
+	// the event) or if no container name is specified "spec.containers[2]" (container with
+	// index 2 in this pod). This syntax is chosen only to have some well-defined way of
 	// referencing a part of an object.
 	// TODO: this design is not final and this field is subject to change in the future.
 	FieldPath string `json:"fieldPath,omitempty"`

pkg/kubectl/resource_printer.go

@@ -193,7 +193,7 @@ var replicationControllerColumns = []string{"CONTROLLER", "CONTAINER(S)", "IMAGE
 var serviceColumns = []string{"NAME", "LABELS", "SELECTOR", "IP", "PORT"}
 var minionColumns = []string{"NAME", "LABELS"}
 var statusColumns = []string{"STATUS"}
-var eventColumns = []string{"TIME", "NAME", "KIND", "CONDITION", "REASON", "MESSAGE"}
+var eventColumns = []string{"TIME", "NAME", "KIND", "SUBOBJECT", "CONDITION", "REASON", "MESSAGE"}
 
 // addDefaultHandlers adds print handlers for default Kubernetes types.
 func (h *HumanReadablePrinter) addDefaultHandlers() {
@@ -339,10 +339,11 @@ func printStatus(status *api.Status, w io.Writer) error {
 
 func printEvent(event *api.Event, w io.Writer) error {
 	_, err := fmt.Fprintf(
-		w, "%s\t%s\t%s\t%s\t%s\t%s\n",
+		w, "%s\t%s\t%s\t%s\t%s\t%s\t%s\n",
 		event.Timestamp.Time.Format(time.RFC1123Z),
 		event.InvolvedObject.Name,
 		event.InvolvedObject.Kind,
+		event.InvolvedObject.FieldPath,
 		event.Condition,
 		event.Reason,
 		event.Message,

pkg/kubelet/kubelet.go

@@ -463,7 +463,11 @@ func fieldPath(pod *api.BoundPod, container *api.Container) (string, error) {
 	for i := range pod.Spec.Containers {
 		here := &pod.Spec.Containers[i]
 		if here.Name == container.Name {
+			if here.Name == "" {
 				return fmt.Sprintf("spec.containers[%d]", i), nil
+			} else {
+				return fmt.Sprintf("spec.containers{%s}", here.Name), nil
+			}
 		}
 	}
 	return "", fmt.Errorf("container %#v not found in pod %#v", container, pod)

pkg/kubelet/kubelet_test.go

@@ -956,6 +956,7 @@ func TestFieldPath(t *testing.T) {
 	pod := &api.BoundPod{Spec: api.PodSpec{Containers: []api.Container{
 		{Name: "foo"},
 		{Name: "bar"},
+		{Name: ""},
 		{Name: "baz"},
 	}}}
 	table := map[string]struct {
@@ -964,9 +965,10 @@ func TestFieldPath(t *testing.T) {
 		path      string
 		success   bool
 	}{
-		"basic":            {pod, &api.Container{Name: "foo"}, "spec.containers[0]", true},
+		"basic":            {pod, &api.Container{Name: "foo"}, "spec.containers{foo}", true},
-		"basic2":           {pod, &api.Container{Name: "baz"}, "spec.containers[2]", true},
+		"basic2":           {pod, &api.Container{Name: "baz"}, "spec.containers{baz}", true},
-		"basicSamePointer": {pod, &pod.Spec.Containers[0], "spec.containers[0]", true},
+		"emptyName":        {pod, &api.Container{Name: ""}, "spec.containers[2]", true},
+		"basicSamePointer": {pod, &pod.Spec.Containers[0], "spec.containers{foo}", true},
 		"missing":          {pod, &api.Container{Name: "qux"}, "", false},
 	}