// GenerateContainerRef returns an *api.ObjectReference which references the given container
// within the given pod. Returns an error if the reference can't be constructed or the
// container doesn't actually belong to the pod.
//
// This function will return an error if the provided Pod does not have a selfLink,
// but we expect selfLink to be populated at all call sites for the function.
func GenerateContainerRef(pod *api.Pod, container *api.Container) (*api.ObjectReference, error) {
fieldPath, err := fieldPath(pod, container)
if err != nil {
// TODO: figure out intelligent way to refer to containers that we implicitly
// start (like the pod infra container). This is not a good way, ugh.
fieldPath = "implicitly required container " + container.Name
}
ref, err := api.GetPartialReference(pod, fieldPath)
if err != nil {
return nil, err
}
return ref, nil
}
func TestEventf(t *testing.T) {
testPod := &api.Pod{
ObjectMeta: api.ObjectMeta{
SelfLink: "/api/version/pods/foo",
Name: "foo",
Namespace: "baz",
UID: "bar",
},
}
testPod2 := &api.Pod{
ObjectMeta: api.ObjectMeta{
SelfLink: "/api/version/pods/foo",
Name: "foo",
Namespace: "baz",
UID: "differentUid",
},
}
testRef, err := api.GetPartialReference(testPod, "spec.containers[2]")
testRef2, err := api.GetPartialReference(testPod2, "spec.containers[3]")
if err != nil {
t.Fatal(err)
}
table := []struct {
obj runtime.Object
reason string
messageFmt string
elements []interface{}
expect *api.Event
expectLog string
expectUpdate bool
}{
{
obj: testRef,
reason: "Started",
messageFmt: "some verbose message: %v",
elements: []interface{}{1},
expect: &api.Event{
ObjectMeta: api.ObjectMeta{
Name: "foo",
Namespace: "baz",
},
InvolvedObject: api.ObjectReference{
Kind: "Pod",
Name: "foo",
Namespace: "baz",
UID: "bar",
APIVersion: "version",
FieldPath: "spec.containers[2]",
},
Reason: "Started",
Message: "some verbose message: 1",
Source: api.EventSource{Component: "eventTest"},
Count: 1,
},
expectLog: `Event(api.ObjectReference{Kind:"Pod", Namespace:"baz", Name:"foo", UID:"bar", APIVersion:"version", ResourceVersion:"", FieldPath:"spec.containers[2]"}): reason: 'Started' some verbose message: 1`,
expectUpdate: false,
},
{
obj: testPod,
reason: "Killed",
messageFmt: "some other verbose message: %v",
elements: []interface{}{1},
expect: &api.Event{
ObjectMeta: api.ObjectMeta{
Name: "foo",
Namespace: "baz",
},
InvolvedObject: api.ObjectReference{
Kind: "Pod",
Name: "foo",
Namespace: "baz",
UID: "bar",
APIVersion: "version",
},
Reason: "Killed",
Message: "some other verbose message: 1",
Source: api.EventSource{Component: "eventTest"},
Count: 1,
},
expectLog: `Event(api.ObjectReference{Kind:"Pod", Namespace:"baz", Name:"foo", UID:"bar", APIVersion:"version", ResourceVersion:"", FieldPath:""}): reason: 'Killed' some other verbose message: 1`,
expectUpdate: false,
},
{
obj: testRef,
reason: "Started",
messageFmt: "some verbose message: %v",
elements: []interface{}{1},
expect: &api.Event{
ObjectMeta: api.ObjectMeta{
Name: "foo",
Namespace: "baz",
},
InvolvedObject: api.ObjectReference{
Kind: "Pod",
Name: "foo",
Namespace: "baz",
UID: "bar",
APIVersion: "version",
FieldPath: "spec.containers[2]",
},
Reason: "Started",
Message: "some verbose message: 1",
Source: api.EventSource{Component: "eventTest"},
Count: 2,
},
expectLog: `Event(api.ObjectReference{Kind:"Pod", Namespace:"baz", Name:"foo", UID:"bar", APIVersion:"version", ResourceVersion:"", FieldPath:"spec.containers[2]"}): reason: 'Started' some verbose message: 1`,
expectUpdate: true,
},
{
obj: testRef2,
reason: "Started",
messageFmt: "some verbose message: %v",
elements: []interface{}{1},
expect: &api.Event{
ObjectMeta: api.ObjectMeta{
Name: "foo",
Namespace: "baz",
},
InvolvedObject: api.ObjectReference{
Kind: "Pod",
Name: "foo",
Namespace: "baz",
UID: "differentUid",
APIVersion: "version",
FieldPath: "spec.containers[3]",
},
Reason: "Started",
Message: "some verbose message: 1",
Source: api.EventSource{Component: "eventTest"},
Count: 1,
},
expectLog: `Event(api.ObjectReference{Kind:"Pod", Namespace:"baz", Name:"foo", UID:"differentUid", APIVersion:"version", ResourceVersion:"", FieldPath:"spec.containers[3]"}): reason: 'Started' some verbose message: 1`,
expectUpdate: false,
},
{
obj: testRef,
reason: "Started",
messageFmt: "some verbose message: %v",
elements: []interface{}{1},
expect: &api.Event{
ObjectMeta: api.ObjectMeta{
Name: "foo",
Namespace: "baz",
},
InvolvedObject: api.ObjectReference{
Kind: "Pod",
Name: "foo",
Namespace: "baz",
UID: "bar",
APIVersion: "version",
FieldPath: "spec.containers[2]",
},
Reason: "Started",
Message: "some verbose message: 1",
Source: api.EventSource{Component: "eventTest"},
Count: 3,
},
expectLog: `Event(api.ObjectReference{Kind:"Pod", Namespace:"baz", Name:"foo", UID:"bar", APIVersion:"version", ResourceVersion:"", FieldPath:"spec.containers[2]"}): reason: 'Started' some verbose message: 1`,
expectUpdate: true,
},
{
obj: testRef2,
reason: "Stopped",
messageFmt: "some verbose message: %v",
elements: []interface{}{1},
expect: &api.Event{
ObjectMeta: api.ObjectMeta{
Name: "foo",
Namespace: "baz",
},
InvolvedObject: api.ObjectReference{
Kind: "Pod",
Name: "foo",
Namespace: "baz",
UID: "differentUid",
APIVersion: "version",
FieldPath: "spec.containers[3]",
},
Reason: "Stopped",
Message: "some verbose message: 1",
Source: api.EventSource{Component: "eventTest"},
Count: 1,
},
expectLog: `Event(api.ObjectReference{Kind:"Pod", Namespace:"baz", Name:"foo", UID:"differentUid", APIVersion:"version", ResourceVersion:"", FieldPath:"spec.containers[3]"}): reason: 'Stopped' some verbose message: 1`,
expectUpdate: false,
},
{
obj: testRef2,
reason: "Stopped",
messageFmt: "some verbose message: %v",
elements: []interface{}{1},
expect: &api.Event{
ObjectMeta: api.ObjectMeta{
Name: "foo",
Namespace: "baz",
},
InvolvedObject: api.ObjectReference{
Kind: "Pod",
Name: "foo",
Namespace: "baz",
UID: "differentUid",
APIVersion: "version",
FieldPath: "spec.containers[3]",
},
Reason: "Stopped",
Message: "some verbose message: 1",
Source: api.EventSource{Component: "eventTest"},
Count: 2,
},
expectLog: `Event(api.ObjectReference{Kind:"Pod", Namespace:"baz", Name:"foo", UID:"differentUid", APIVersion:"version", ResourceVersion:"", FieldPath:"spec.containers[3]"}): reason: 'Stopped' some verbose message: 1`,
expectUpdate: true,
},
}
for _, item := range table {
called := make(chan struct{})
testEvents := testEventSink{
OnCreate: func(event *api.Event) (*api.Event, error) {
returnEvent, _ := validateEvent(event, item.expect, t)
if item.expectUpdate {
t.Errorf("Expected event update(), got event create()")
}
called <- struct{}{}
return returnEvent, nil
},
OnUpdate: func(event *api.Event) (*api.Event, error) {
returnEvent, _ := validateEvent(event, item.expect, t)
if !item.expectUpdate {
t.Errorf("Expected event create(), got event update()")
}
called <- struct{}{}
return returnEvent, nil
},
}
eventBroadcaster := NewBroadcaster()
sinkWatcher := eventBroadcaster.StartRecordingToSink(&testEvents)
logWatcher1 := eventBroadcaster.StartLogging(t.Logf) // Prove that it is useful
logWatcher2 := eventBroadcaster.StartLogging(func(formatter string, args ...interface{}) {
if e, a := item.expectLog, fmt.Sprintf(formatter, args...); e != a {
t.Errorf("Expected '%v', got '%v'", e, a)
}
called <- struct{}{}
})
recorder := eventBroadcaster.NewRecorder(api.EventSource{Component: "eventTest"})
recorder.Eventf(item.obj, item.reason, item.messageFmt, item.elements...)
<-called
<-called
sinkWatcher.Stop()
logWatcher1.Stop()
logWatcher2.Stop()
}
}
