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Add SetListOptionsDefaults for setting defaults on ListOptions

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This commit is contained in:
Lukasz Szaszkiewicz 2023-01-31 14:07:30 +01:00
parent 69e4de131e
commit 52d613efde
4 changed files with 150 additions and 0 deletions
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38
staging/src/k8s.io/apimachinery/pkg/apis/meta/internalversion/defaults.go Normal file
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@ -0,0 +1,38 @@
/*
Copyright 2023 The Kubernetes Authors.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
package internalversion
import metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
// SetListOptionsDefaults sets defaults on the provided ListOptions if applicable.
//
// TODO(#115478): once the watch-list fg is always on we register this function in the scheme (via AddTypeDefaultingFunc).
// TODO(#115478): when the function is registered in the scheme remove all callers of this method.
func SetListOptionsDefaults(obj *ListOptions, isWatchListFeatureEnabled bool) {
if !isWatchListFeatureEnabled {
return
}
if obj.SendInitialEvents != nil || len(obj.ResourceVersionMatch) != 0 {
return
}
legacy := obj.ResourceVersion == "" || obj.ResourceVersion == "0"
if obj.Watch && legacy {
turnOnInitialEvents := true
obj.SendInitialEvents = &turnOnInitialEvents
obj.ResourceVersionMatch = metav1.ResourceVersionMatchNotOlderThan
}
}

110
staging/src/k8s.io/apimachinery/pkg/apis/meta/internalversion/defaults_test.go Normal file
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@ -0,0 +1,110 @@
/*
Copyright 2023 The Kubernetes Authors.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
package internalversion
import (
"testing"
"github.com/google/go-cmp/cmp"
apiequality "k8s.io/apimachinery/pkg/api/equality"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/fields"
"k8s.io/apimachinery/pkg/labels"
)
func TestSetListOptionsDefaults(t *testing.T) {
boolPtrFn := func(b bool) *bool {
return &b
}
scenarios := []struct {
name string
watchListFeatureEnabled bool
targetObj ListOptions
expectedObj ListOptions
}{
{
name: "no-op, RV doesn't match",
watchListFeatureEnabled: true,
targetObj: ListOptions{LabelSelector: labels.Everything(), FieldSelector: fields.Everything(), Watch: true, ResourceVersion: "1"},
expectedObj: ListOptions{LabelSelector: labels.Everything(), FieldSelector: fields.Everything(), Watch: true, ResourceVersion: "1"},
},
{
name: "no-op, SendInitialEvents set",
watchListFeatureEnabled: true,
targetObj: ListOptions{LabelSelector: labels.Everything(), FieldSelector: fields.Everything(), Watch: true, SendInitialEvents: boolPtrFn(true)},
expectedObj: ListOptions{LabelSelector: labels.Everything(), FieldSelector: fields.Everything(), Watch: true, SendInitialEvents: boolPtrFn(true)},
},
{
name: "no-op, ResourceVersionMatch set",
watchListFeatureEnabled: true,
targetObj: ListOptions{LabelSelector: labels.Everything(), FieldSelector: fields.Everything(), Watch: true, ResourceVersionMatch: "m"},
expectedObj: ListOptions{LabelSelector: labels.Everything(), FieldSelector: fields.Everything(), Watch: true, ResourceVersionMatch: "m"},
},
{
name: "no-op, Watch=false",
watchListFeatureEnabled: true,
targetObj: ListOptions{LabelSelector: labels.Everything(), FieldSelector: fields.Everything()},
expectedObj: ListOptions{LabelSelector: labels.Everything(), FieldSelector: fields.Everything()},
},
{
name: "defaults applied, match on empty RV",
watchListFeatureEnabled: true,
targetObj: ListOptions{LabelSelector: labels.Everything(), FieldSelector: fields.Everything(), Watch: true},
expectedObj: ListOptions{LabelSelector: labels.Everything(), FieldSelector: fields.Everything(), Watch: true, SendInitialEvents: boolPtrFn(true), ResourceVersionMatch: metav1.ResourceVersionMatchNotOlderThan},
},
{
name: "defaults applied, match on RV=0",
watchListFeatureEnabled: true,
targetObj: ListOptions{LabelSelector: labels.Everything(), FieldSelector: fields.Everything(), Watch: true, ResourceVersion: "0"},
expectedObj: ListOptions{LabelSelector: labels.Everything(), FieldSelector: fields.Everything(), Watch: true, ResourceVersion: "0", SendInitialEvents: boolPtrFn(true), ResourceVersionMatch: metav1.ResourceVersionMatchNotOlderThan},
},
{
name: "no-op, match on empty RV but watch-list fg is off",
targetObj: ListOptions{LabelSelector: labels.Everything(), FieldSelector: fields.Everything(), Watch: true},
expectedObj: ListOptions{LabelSelector: labels.Everything(), FieldSelector: fields.Everything(), Watch: true},
},
{
name: "no-op, match on empty RV but SendInitialEvents is on",
watchListFeatureEnabled: true,
targetObj: ListOptions{LabelSelector: labels.Everything(), FieldSelector: fields.Everything(), Watch: true, SendInitialEvents: boolPtrFn(true)},
expectedObj: ListOptions{LabelSelector: labels.Everything(), FieldSelector: fields.Everything(), Watch: true, SendInitialEvents: boolPtrFn(true)},
},
{
name: "no-op, match on empty RV but SendInitialEvents is off",
watchListFeatureEnabled: true,
targetObj: ListOptions{LabelSelector: labels.Everything(), FieldSelector: fields.Everything(), Watch: true, SendInitialEvents: boolPtrFn(false)},
expectedObj: ListOptions{LabelSelector: labels.Everything(), FieldSelector: fields.Everything(), Watch: true, SendInitialEvents: boolPtrFn(false)},
},
{
name: "no-op, match on empty RV but ResourceVersionMatch set",
watchListFeatureEnabled: true,
targetObj: ListOptions{LabelSelector: labels.Everything(), FieldSelector: fields.Everything(), Watch: true, ResourceVersionMatch: "m"},
expectedObj: ListOptions{LabelSelector: labels.Everything(), FieldSelector: fields.Everything(), Watch: true, ResourceVersionMatch: "m"},
},
}
for _, scenario := range scenarios {
t.Run(scenario.name, func(t *testing.T) {
SetListOptionsDefaults(&scenario.targetObj, scenario.watchListFeatureEnabled)
if !apiequality.Semantic.DeepEqual(&scenario.expectedObj, &scenario.targetObj) {
t.Errorf("expected and defaulted objects are different:\n%s", cmp.Diff(&scenario.expectedObj, &scenario.targetObj))
}
})
}
}

1
staging/src/k8s.io/apiserver/pkg/endpoints/handlers/delete.go
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@ -198,6 +198,7 @@ func DeleteCollection(r rest.CollectionDeleter, checkBody bool, scope *RequestSc
return
}
metainternalversion.SetListOptionsDefaults(&listOptions, utilfeature.DefaultFeatureGate.Enabled(features.WatchList))
if errs := metainternalversionvalidation.ValidateListOptions(&listOptions, utilfeature.DefaultFeatureGate.Enabled(features.WatchList)); len(errs) > 0 {
err := errors.NewInvalid(schema.GroupKind{Group: metav1.GroupName, Kind: "ListOptions"}, "", errs)
scope.err(err, w, req)

1
staging/src/k8s.io/apiserver/pkg/endpoints/handlers/get.go
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@ -200,6 +200,7 @@ func ListResource(r rest.Lister, rw rest.Watcher, scope *RequestScope, forceWatc
return
}
metainternalversion.SetListOptionsDefaults(&opts, utilfeature.DefaultFeatureGate.Enabled(features.WatchList))
if errs := metainternalversionvalidation.ValidateListOptions(&opts, utilfeature.DefaultFeatureGate.Enabled(features.WatchList)); len(errs) > 0 {
err := errors.NewInvalid(schema.GroupKind{Group: metav1.GroupName, Kind: "ListOptions"}, "", errs)
scope.err(err, w, req)