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Stop publishing Pod ResourceVersion in Endpoints and EndpointSlice API

Browse Source 
The field is not used anywhere and its value may be stale as Endpoints
and EndpointSlice won't be updated if there is only Pod ResourceVersion
change..
This commit is contained in:
Quan Tian 2022-02-17 14:10:49 +08:00
parent 422001df8b
commit 906e6d4670
5 changed files with 96 additions and 78 deletions
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1
pkg/controller/endpoint/endpoints_controller.go
View File

@ -259,7 +259,6 @@ func podToEndpointAddressForService(svc *v1.Service, pod *v1.Pod) (*v1.EndpointA
Namespace: pod.ObjectMeta.Namespace,
Name: pod.ObjectMeta.Name,
UID: pod.ObjectMeta.UID,
ResourceVersion: pod.ObjectMeta.ResourceVersion,
},
}, nil
}

11
pkg/controller/endpoint/endpoints_controller_test.go
View File

@ -66,6 +66,7 @@ func testPod(namespace string, id int, nPorts int, isReady bool, ipFamilies []v1
Namespace: namespace,
Name: fmt.Sprintf("pod%d", id),
Labels: map[string]string{"foo": "bar"},
ResourceVersion: fmt.Sprint(id),
},
Spec: v1.PodSpec{
Containers: []v1.Container{{Ports: []v1.ContainerPort{}}},
@ -1430,16 +1431,16 @@ func TestPodToEndpointAddressForService(t *testing.T) {
t.Fatalf("TargetRef.Kind: expected: %s, got: %s", "Pod", epa.TargetRef.Kind)
}
if epa.TargetRef.Namespace != pod.ObjectMeta.Namespace {
t.Fatalf("TargetRef.Kind: expected: %s, got: %s", pod.ObjectMeta.Namespace, epa.TargetRef.Namespace)
t.Fatalf("TargetRef.Namespace: expected: %s, got: %s", pod.ObjectMeta.Namespace, epa.TargetRef.Namespace)
}
if epa.TargetRef.Name != pod.ObjectMeta.Name {
t.Fatalf("TargetRef.Kind: expected: %s, got: %s", pod.ObjectMeta.Name, epa.TargetRef.Name)
t.Fatalf("TargetRef.Name: expected: %s, got: %s", pod.ObjectMeta.Name, epa.TargetRef.Name)
}
if epa.TargetRef.UID != pod.ObjectMeta.UID {
t.Fatalf("TargetRef.Kind: expected: %s, got: %s", pod.ObjectMeta.UID, epa.TargetRef.UID)
t.Fatalf("TargetRef.UID: expected: %s, got: %s", pod.ObjectMeta.UID, epa.TargetRef.UID)
}
if epa.TargetRef.ResourceVersion != pod.ObjectMeta.ResourceVersion {
t.Fatalf("TargetRef.Kind: expected: %s, got: %s", pod.ObjectMeta.ResourceVersion, epa.TargetRef.ResourceVersion)
if epa.TargetRef.ResourceVersion != "" {
t.Fatalf("TargetRef.ResourceVersion: expected empty, got: %s", epa.TargetRef.ResourceVersion)
}
})
}

1
pkg/controller/endpointslice/utils.go
View File

@ -57,7 +57,6 @@ func podToEndpoint(pod *corev1.Pod, node *corev1.Node, service *corev1.Service,
Namespace: pod.ObjectMeta.Namespace,
Name: pod.ObjectMeta.Name,
UID: pod.ObjectMeta.UID,
ResourceVersion: pod.ObjectMeta.ResourceVersion,
},
}

13
pkg/controller/endpointslice/utils_test.go
View File

@ -266,7 +266,6 @@ func TestPodToEndpoint(t *testing.T) {
Namespace: ns,
Name: readyPod.Name,
UID: readyPod.UID,
ResourceVersion: readyPod.ResourceVersion,
},
},
},
@ -283,7 +282,6 @@ func TestPodToEndpoint(t *testing.T) {
Namespace: ns,
Name: readyPod.Name,
UID: readyPod.UID,
ResourceVersion: readyPod.ResourceVersion,
},
},
},
@ -300,7 +298,6 @@ func TestPodToEndpoint(t *testing.T) {
Namespace: ns,
Name: readyPod.Name,
UID: readyPod.UID,
ResourceVersion: readyPod.ResourceVersion,
},
},
},
@ -317,7 +314,6 @@ func TestPodToEndpoint(t *testing.T) {
Namespace: ns,
Name: readyPod.Name,
UID: readyPod.UID,
ResourceVersion: readyPod.ResourceVersion,
},
},
},
@ -336,7 +332,6 @@ func TestPodToEndpoint(t *testing.T) {
Namespace: ns,
Name: readyPod.Name,
UID: readyPod.UID,
ResourceVersion: readyPod.ResourceVersion,
},
},
},
@ -355,7 +350,6 @@ func TestPodToEndpoint(t *testing.T) {
Namespace: ns,
Name: readyPod.Name,
UID: readyPod.UID,
ResourceVersion: readyPod.ResourceVersion,
},
},
},
@ -375,7 +369,6 @@ func TestPodToEndpoint(t *testing.T) {
Namespace: ns,
Name: readyPodHostname.Name,
UID: readyPodHostname.UID,
ResourceVersion: readyPodHostname.ResourceVersion,
},
},
},
@ -396,7 +389,6 @@ func TestPodToEndpoint(t *testing.T) {
Namespace: ns,
Name: readyPod.Name,
UID: readyPod.UID,
ResourceVersion: readyPod.ResourceVersion,
},
},
terminatingGateEnabled: true,
@ -416,7 +408,6 @@ func TestPodToEndpoint(t *testing.T) {
Namespace: ns,
Name: readyPod.Name,
UID: readyPod.UID,
ResourceVersion: readyPod.ResourceVersion,
},
},
terminatingGateEnabled: false,
@ -438,7 +429,6 @@ func TestPodToEndpoint(t *testing.T) {
Namespace: ns,
Name: readyPod.Name,
UID: readyPod.UID,
ResourceVersion: readyPod.ResourceVersion,
},
},
terminatingGateEnabled: true,
@ -458,7 +448,6 @@ func TestPodToEndpoint(t *testing.T) {
Namespace: ns,
Name: readyPod.Name,
UID: readyPod.UID,
ResourceVersion: readyPod.ResourceVersion,
},
},
terminatingGateEnabled: false,
@ -480,7 +469,6 @@ func TestPodToEndpoint(t *testing.T) {
Namespace: ns,
Name: readyPod.Name,
UID: readyPod.UID,
ResourceVersion: readyPod.ResourceVersion,
},
},
terminatingGateEnabled: true,
@ -937,6 +925,7 @@ func newPod(n int, namespace string, ready bool, nPorts int, terminating bool) *
Name: fmt.Sprintf("pod%d", n),
Labels: map[string]string{"foo": "bar"},
DeletionTimestamp: deletionTimestamp,
ResourceVersion: fmt.Sprint(n),
},
Spec: v1.PodSpec{
Containers: []v1.Container{{

30
pkg/controller/util/endpoint/controller_utils_test.go
View File

@ -851,6 +851,28 @@ func TestEndpointsEqualBeyondHash(t *testing.T) {
},
expected: true,
},
{
name: "Pod resourceVersion removed",
ep1: &discovery.Endpoint{
Conditions: discovery.EndpointConditions{
Ready: utilpointer.BoolPtr(true),
},
Addresses: []string{"10.0.0.1"},
TargetRef: &v1.ObjectReference{Kind: "Pod", Namespace: "default", Name: "pod0", ResourceVersion: "1"},
Zone: utilpointer.StringPtr("zone-1"),
NodeName: utilpointer.StringPtr("node-1"),
},
ep2: &discovery.Endpoint{
Conditions: discovery.EndpointConditions{
Ready: utilpointer.BoolPtr(true),
},
Addresses: []string{"10.0.0.1"},
TargetRef: &v1.ObjectReference{Kind: "Pod", Namespace: "default", Name: "pod0", ResourceVersion: ""},
Zone: utilpointer.StringPtr("zone-1"),
NodeName: utilpointer.StringPtr("node-1"),
},
expected: true,
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
@ -933,6 +955,14 @@ func TestEndpointSubsetsEqualIgnoreResourceVersion(t *testing.T) {
})},
expected: true,
},
{
name: "Pod ResourceVersion removed",
subsets1: []v1.EndpointSubset{*es1, *es2},
subsets2: []v1.EndpointSubset{*es1, *copyAndMutateEndpointSubset(es2, func(es *v1.EndpointSubset) {
es.Addresses[0].TargetRef.ResourceVersion = ""
})},
expected: true,
},
{
name: "Ports changed",
subsets1: []v1.EndpointSubset{*es1, *es2},