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Merge pull request #88505 from liggitt/pod-ip-patch

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Honor status.podIP over status.podIPs and node.spec.podCIDR over node.spec.PodCIDRs when mismatched
This commit is contained in:
Kubernetes Prow Robot 2020-03-02 16:16:36 -08:00 committed by GitHub
commit f221dbb91b
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2 changed files with 112 additions and 22 deletions
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12
pkg/apis/core/v1/conversion.go
View File

@ -253,9 +253,13 @@ func Convert_v1_PodStatus_To_core_PodStatus(in *v1.PodStatus, out *core.PodStatu
return err
}
// If both fields (v1.PodIPs and v1.PodIP) are provided, then test v1.PodIP == v1.PodIPs[0]
// If both fields (v1.PodIPs and v1.PodIP) are provided and differ, then PodIP is authoritative for compatibility with older kubelets
if (len(in.PodIP) > 0 && len(in.PodIPs) > 0) && (in.PodIP != in.PodIPs[0].IP) {
return fmt.Errorf("conversion Error: v1.PodIP(%v) != v1.PodIPs[0](%v)", in.PodIP, in.PodIPs[0].IP)
out.PodIPs = []core.PodIP{
{
IP: in.PodIP,
},
}
}
// at the this point, autoConvert copied v1.PodIPs -> core.PodIPs
// if v1.PodIPs was empty but v1.PodIP is not, then set core.PodIPs[0] with v1.PodIP
@ -321,9 +325,9 @@ func Convert_v1_NodeSpec_To_core_NodeSpec(in *v1.NodeSpec, out *core.NodeSpec, s
if err := autoConvert_v1_NodeSpec_To_core_NodeSpec(in, out, s); err != nil {
return err
}
// If both fields (v1.PodCIDRs and v1.PodCIDR) are provided, then test v1.PodCIDR == v1.PodCIDRs[0]
// If both fields (v1.PodCIDRs and v1.PodCIDR) are provided and differ, then PodCIDR is authoritative for compatibility with older clients
if (len(in.PodCIDR) > 0 && len(in.PodCIDRs) > 0) && (in.PodCIDR != in.PodCIDRs[0]) {
return fmt.Errorf("conversion Error: v1.PodCIDR(%v) != v1.CIDRs[0](%v)", in.PodCIDR, in.PodCIDRs[0])
out.PodCIDRs = []string{in.PodCIDR}
}
// at the this point, autoConvert copied v1.PodCIDRs -> core.PodCIDRs

112
pkg/apis/core/v1/conversion_test.go
View File

@ -398,16 +398,60 @@ func Test_core_PodStatus_to_v1_PodStatus(t *testing.T) {
}
}
func Test_v1_PodStatus_to_core_PodStatus(t *testing.T) {
// fail
v1FailTestInputs := []v1.PodStatus{
asymmetricInputs := []struct {
name string
in v1.PodStatus
out core.PodStatus
}{
{
PodIP: "1.1.2.1", // fail becaue PodIP != PodIPs[0]
name: "mismatched podIP",
in: v1.PodStatus{
PodIP: "1.1.2.1", // Older field takes precedence for compatibility with patch by older clients
PodIPs: []v1.PodIP{
{IP: "1.1.1.1"},
{IP: "2.2.2.2"},
},
},
out: core.PodStatus{
PodIPs: []core.PodIP{
{IP: "1.1.2.1"},
},
},
},
{
name: "matching podIP",
in: v1.PodStatus{
PodIP: "1.1.1.1",
PodIPs: []v1.PodIP{
{IP: "1.1.1.1"},
{IP: "2.2.2.2"},
},
},
out: core.PodStatus{
PodIPs: []core.PodIP{
{IP: "1.1.1.1"},
{IP: "2.2.2.2"},
},
},
},
{
name: "empty podIP",
in: v1.PodStatus{
PodIP: "",
PodIPs: []v1.PodIP{
{IP: "1.1.1.1"},
{IP: "2.2.2.2"},
},
},
out: core.PodStatus{
PodIPs: []core.PodIP{
{IP: "1.1.1.1"},
{IP: "2.2.2.2"},
},
},
},
}
// success
v1TestInputs := []v1.PodStatus{
// only Primary IP Provided
@ -451,12 +495,18 @@ func Test_v1_PodStatus_to_core_PodStatus(t *testing.T) {
},
},
}
// run failed cases
for i, failedTest := range v1FailTestInputs {
// run asymmetric cases
for _, tc := range asymmetricInputs {
testInput := tc.in
corePodStatus := core.PodStatus{}
// convert..
if err := corev1.Convert_v1_PodStatus_To_core_PodStatus(&failedTest, &corePodStatus, nil); err == nil {
t.Errorf("%v: Convert v1.PodStatus to core.PodStatus should have failed for input %+v", i, failedTest)
if err := corev1.Convert_v1_PodStatus_To_core_PodStatus(&testInput, &corePodStatus, nil); err != nil {
t.Errorf("%s: Convert v1.PodStatus to core.PodStatus failed with error:%v for input %+v", tc.name, err.Error(), testInput)
}
if !reflect.DeepEqual(corePodStatus, tc.out) {
t.Errorf("%s: expected %#v, got %#v", tc.name, tc.out.PodIPs, corePodStatus.PodIPs)
}
}
@ -541,11 +591,41 @@ func Test_core_NodeSpec_to_v1_NodeSpec(t *testing.T) {
}
func Test_v1_NodeSpec_to_core_NodeSpec(t *testing.T) {
failInputs := []v1.NodeSpec{
{ // fail PodCIDRs[0] != PodCIDR
asymmetricInputs := []struct {
name string
in v1.NodeSpec
out core.NodeSpec
}{
{
name: "mismatched podCIDR",
in: v1.NodeSpec{
PodCIDR: "10.0.0.0/24",
PodCIDRs: []string{"10.0.1.0/24", "ace:cab:deca::/8"},
},
out: core.NodeSpec{
PodCIDRs: []string{"10.0.0.0/24"},
},
},
{
name: "unset podCIDR",
in: v1.NodeSpec{
PodCIDR: "",
PodCIDRs: []string{"10.0.1.0/24", "ace:cab:deca::/8"},
},
out: core.NodeSpec{
PodCIDRs: []string{"10.0.1.0/24", "ace:cab:deca::/8"},
},
},
{
name: "matching podCIDR",
in: v1.NodeSpec{
PodCIDR: "10.0.1.0/24",
PodCIDRs: []string{"10.0.1.0/24", "ace:cab:deca::/8"},
},
out: core.NodeSpec{
PodCIDRs: []string{"10.0.1.0/24", "ace:cab:deca::/8"},
},
},
}
testInputs := []v1.NodeSpec{
@ -591,11 +671,17 @@ func Test_v1_NodeSpec_to_core_NodeSpec(t *testing.T) {
},
}
// fail cases
for i, failInput := range failInputs {
// run asymmetric cases
for _, tc := range asymmetricInputs {
testInput := tc.in
coreNodeSpec := core.NodeSpec{}
if err := corev1.Convert_v1_NodeSpec_To_core_NodeSpec(&failInput, &coreNodeSpec, nil); err == nil {
t.Errorf("%v: Convert v1.NodeSpec to core.NodeSpec failed. Expected an error when coreNodeSpec.PodCIDR != coreNodeSpec.PodCIDRs[0]", i)
// convert..
if err := corev1.Convert_v1_NodeSpec_To_core_NodeSpec(&testInput, &coreNodeSpec, nil); err != nil {
t.Errorf("%s: Convert v1.NodeSpec to core.NodeSpec failed with error:%v for input %+v", tc.name, err.Error(), testInput)
}
if !reflect.DeepEqual(coreNodeSpec, tc.out) {
t.Errorf("%s: expected %#v, got %#v", tc.name, tc.out.PodCIDRs, coreNodeSpec.PodCIDRs)
}
}