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Merge pull request #83911 from matte21/fix-shared-index-informer-notification-miss

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Fix DeltaFIFO Replace method to prevent SharedIndexInformers from missing notifications

Kubernetes-commit: 634bddddf271868ed8c0a9fbd853d62e0c0446bb
This commit is contained in:
Kubernetes Publisher 2019-10-16 09:34:59 -07:00
commit 57ffd16d28
5 changed files with 31 additions and 18 deletions
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2
Godeps/Godeps.json generated
View File

@ -348,7 +348,7 @@
},
{
"ImportPath": "k8s.io/apimachinery",
"Rev": "fb3eea214746"
"Rev": "86f2f1b9c076"
},
{
"ImportPath": "k8s.io/gengo",

4
go.mod
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@ -28,7 +28,7 @@ require (
golang.org/x/time v0.0.0-20181108054448-85acf8d2951c
google.golang.org/appengine v1.5.0 // indirect
k8s.io/api v0.0.0-20191010143144-fbf594f18f80
k8s.io/apimachinery v0.0.0-20191014065749-fb3eea214746
k8s.io/apimachinery v0.0.0-20191016060620-86f2f1b9c076
k8s.io/klog v1.0.0
k8s.io/utils v0.0.0-20191010214722-8d271d903fe4
sigs.k8s.io/yaml v1.1.0
@ -43,5 +43,5 @@ replace (
golang.org/x/text => golang.org/x/text v0.3.1-0.20181227161524-e6919f6577db
golang.org/x/time => golang.org/x/time v0.0.0-20161028155119-f51c12702a4d
k8s.io/api => k8s.io/api v0.0.0-20191010143144-fbf594f18f80
k8s.io/apimachinery => k8s.io/apimachinery v0.0.0-20191014065749-fb3eea214746
k8s.io/apimachinery => k8s.io/apimachinery v0.0.0-20191016060620-86f2f1b9c076
)

2
go.sum
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@ -181,7 +181,7 @@ gopkg.in/yaml.v2 v2.2.4/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
honnef.co/go/tools v0.0.0-20190102054323-c2f93a96b099/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
honnef.co/go/tools v0.0.0-20190106161140-3f1c8253044a/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
k8s.io/api v0.0.0-20191010143144-fbf594f18f80/go.mod h1:X3kixOyiuC4u4LU6y2BxLg5tsvw+hrMhstfga7LZ4Gw=
k8s.io/apimachinery v0.0.0-20191014065749-fb3eea214746/go.mod h1:92mWDd8Ji2sw2157KIgino5wCxffA8KSvhW2oY4ypdw=
k8s.io/apimachinery v0.0.0-20191016060620-86f2f1b9c076/go.mod h1:92mWDd8Ji2sw2157KIgino5wCxffA8KSvhW2oY4ypdw=
k8s.io/gengo v0.0.0-20190128074634-0689ccc1d7d6/go.mod h1:ezvh/TsK7cY6rbqRK0oQQ8IAqLxYwwyPxAX1Pzy0ii0=
k8s.io/klog v0.0.0-20181102134211-b9b56d5dfc92/go.mod h1:Gq+BEi5rUBO/HRz0bTSXDUcqjScdoY3a9IHpCEIOOfk=
k8s.io/klog v0.3.0/go.mod h1:Gq+BEi5rUBO/HRz0bTSXDUcqjScdoY3a9IHpCEIOOfk=

14
tools/cache/delta_fifo.go vendored
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@ -295,13 +295,6 @@ func isDeletionDup(a, b *Delta) *Delta {
return b
}
// willObjectBeDeletedLocked returns true only if the last delta for the
// given object is Delete. Caller must lock first.
func (f *DeltaFIFO) willObjectBeDeletedLocked(id string) bool {
deltas := f.items[id]
return len(deltas) > 0 && deltas[len(deltas)-1].Type == Deleted
}
// queueActionLocked appends to the delta list for the object.
// Caller must lock first.
func (f *DeltaFIFO) queueActionLocked(actionType DeltaType, obj interface{}) error {
@ -310,13 +303,6 @@ func (f *DeltaFIFO) queueActionLocked(actionType DeltaType, obj interface{}) err
return KeyError{obj, err}
}
// If object is supposed to be deleted (last event is Deleted),
// then we should ignore Sync events, because it would result in
// recreation of this object.
if actionType == Sync && f.willObjectBeDeletedLocked(id) {
return nil
}
newDeltas := append(f.items[id], Delta{actionType, obj})
newDeltas = dedupDeltas(newDeltas)

27
tools/cache/delta_fifo_test.go vendored
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@ -85,6 +85,33 @@ func TestDeltaFIFO_basic(t *testing.T) {
}
}
// TestDeltaFIFO_replaceWithDeleteDeltaIn tests that a `Sync` delta for an
// object `O` with ID `X` is added when .Replace is called and `O` is among the
// replacement objects even if the DeltaFIFO already stores in terminal position
// a delta of type `Delete` for ID `X`. Not adding the `Sync` delta causes
// SharedIndexInformers to miss `O`'s create notification, see https://github.com/kubernetes/kubernetes/issues/83810
// for more details.
func TestDeltaFIFO_replaceWithDeleteDeltaIn(t *testing.T) {
oldObj := mkFifoObj("foo", 1)
newObj := mkFifoObj("foo", 2)
f := NewDeltaFIFO(testFifoObjectKeyFunc, keyLookupFunc(func() []testFifoObject {
return []testFifoObject{oldObj}
}))
f.Delete(oldObj)
f.Replace([]interface{}{newObj}, "")
actualDeltas := Pop(f)
expectedDeltas := Deltas{
Delta{Type: Deleted, Object: oldObj},
Delta{Type: Sync, Object: newObj},
}
if !reflect.DeepEqual(expectedDeltas, actualDeltas) {
t.Errorf("expected %#v, got %#v", expectedDeltas, actualDeltas)
}
}
func TestDeltaFIFO_requeueOnPop(t *testing.T) {
f := NewDeltaFIFO(testFifoObjectKeyFunc, nil)