Merge pull request #123484 from erikgb/csa-upgrade-subresource

Add option to upgrade subresource from CSA to SSA

staging/src/k8s.io/client-go/util/csaupgrade/options.go

@@ -0,0 +1,30 @@
+/*
+Copyright 2024 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 csaupgrade
+
+type Option func(*options)
+
+// Subresource set the subresource to upgrade from CSA to SSA.
+func Subresource(s string) Option {
+	return func(opts *options) {
+		opts.subresource = s
+	}
+}
+
+type options struct {
+	subresource string
+}

staging/src/k8s.io/client-go/util/csaupgrade/upgrade.go

@@ -82,7 +82,13 @@ func UpgradeManagedFields(
 	obj runtime.Object,
 	csaManagerNames sets.Set[string],
 	ssaManagerName string,
+	opts ...Option,
 ) error {
+	o := options{}
+	for _, opt := range opts {
+		opt(&o)
+	}
+
 	accessor, err := meta.Accessor(obj)
 	if err != nil {
 		return err
@@ -92,7 +98,7 @@ func UpgradeManagedFields(
 
 	for csaManagerName := range csaManagerNames {
 		filteredManagers, err = upgradedManagedFields(
-			filteredManagers, csaManagerName, ssaManagerName)
+			filteredManagers, csaManagerName, ssaManagerName, o)
 
 		if err != nil {
 			return err
@@ -116,7 +122,14 @@ func UpgradeManagedFields(
 func UpgradeManagedFieldsPatch(
 	obj runtime.Object,
 	csaManagerNames sets.Set[string],
-	ssaManagerName string) ([]byte, error) {
+	ssaManagerName string,
+	opts ...Option,
+) ([]byte, error) {
+	o := options{}
+	for _, opt := range opts {
+		opt(&o)
+	}
+
 	accessor, err := meta.Accessor(obj)
 	if err != nil {
 		return nil, err
@@ -126,7 +139,7 @@ func UpgradeManagedFieldsPatch(
 	filteredManagers := accessor.GetManagedFields()
 	for csaManagerName := range csaManagerNames {
 		filteredManagers, err = upgradedManagedFields(
-			filteredManagers, csaManagerName, ssaManagerName)
+			filteredManagers, csaManagerName, ssaManagerName, o)
 		if err != nil {
 			return nil, err
 		}
@@ -166,6 +179,7 @@ func upgradedManagedFields(
 	managedFields []metav1.ManagedFieldsEntry,
 	csaManagerName string,
 	ssaManagerName string,
+	opts options,
 ) ([]metav1.ManagedFieldsEntry, error) {
 	if managedFields == nil {
 		return nil, nil
@@ -183,7 +197,7 @@ func upgradedManagedFields(
 		func(entry metav1.ManagedFieldsEntry) bool {
 			return entry.Manager == ssaManagerName &&
 				entry.Operation == metav1.ManagedFieldsOperationApply &&
-				entry.Subresource == ""
+				entry.Subresource == opts.subresource
 		})
 
 	if !managerExists {
@@ -196,7 +210,7 @@ func upgradedManagedFields(
 			func(entry metav1.ManagedFieldsEntry) bool {
 				return entry.Manager == csaManagerName &&
 					entry.Operation == metav1.ManagedFieldsOperationUpdate &&
-					entry.Subresource == ""
+					entry.Subresource == opts.subresource
 			})
 
 		if !managerExists {
@@ -209,7 +223,7 @@ func upgradedManagedFields(
 		managedFields[replaceIndex].Operation = metav1.ManagedFieldsOperationApply
 		managedFields[replaceIndex].Manager = ssaManagerName
 	}
-	err := unionManagerIntoIndex(managedFields, replaceIndex, csaManagerName)
+	err := unionManagerIntoIndex(managedFields, replaceIndex, csaManagerName, opts)
 	if err != nil {
 		return nil, err
 	}
@@ -218,7 +232,7 @@ func upgradedManagedFields(
 	filteredManagers := filter(managedFields, func(entry metav1.ManagedFieldsEntry) bool {
 		return !(entry.Manager == csaManagerName &&
 			entry.Operation == metav1.ManagedFieldsOperationUpdate &&
-			entry.Subresource == "")
+			entry.Subresource == opts.subresource)
 	})
 
 	return filteredManagers, nil
@@ -231,6 +245,7 @@ func unionManagerIntoIndex(
 	entries []metav1.ManagedFieldsEntry,
 	targetIndex int,
 	csaManagerName string,
+	opts options,
 ) error {
 	ssaManager := entries[targetIndex]
 
@@ -240,9 +255,7 @@ func unionManagerIntoIndex(
 		func(entry metav1.ManagedFieldsEntry) bool {
 			return entry.Manager == csaManagerName &&
 				entry.Operation == metav1.ManagedFieldsOperationUpdate &&
-				//!TODO: some users may want to migrate subresources.
+				entry.Subresource == opts.subresource &&
-				// should thread through the args at some point.
-				entry.Subresource == "" &&
 				entry.APIVersion == ssaManager.APIVersion
 		})
 

staging/src/k8s.io/client-go/util/csaupgrade/upgrade_test.go

@@ -294,6 +294,7 @@ func TestUpgradeCSA(t *testing.T) {
 		Name           string
 		CSAManagers    []string
 		SSAManager     string
+		Options        []csaupgrade.Option
 		OriginalObject []byte
 		ExpectedObject []byte
 	}{
@@ -1079,6 +1080,163 @@ metadata:
       time: "2022-11-03T23:22:40Z"
     name: test
     namespace: default
+`),
+		},
+		{
+			// Expect multiple targets to be merged into a new ssa manager
+			Name:        "subresource",
+			CSAManagers: []string{"kube-controller-manager"},
+			SSAManager:  "kube-controller-manager",
+			Options:     []csaupgrade.Option{csaupgrade.Subresource("status")},
+			OriginalObject: []byte(`
+apiVersion: v1
+kind: PersistentVolumeClaim
+metadata:
+  annotations:
+    pv.kubernetes.io/bind-completed: "yes"
+    pv.kubernetes.io/bound-by-controller: "yes"
+    volume.beta.kubernetes.io/storage-provisioner: openshift-storage.cephfs.csi.ceph.com
+    volume.kubernetes.io/storage-provisioner: openshift-storage.cephfs.csi.ceph.com
+  creationTimestamp: "2024-02-24T15:24:31Z"
+  finalizers:
+  - kubernetes.io/pvc-protection
+  managedFields:
+  - apiVersion: v1
+    fieldsType: FieldsV1
+    fieldsV1:
+      f:spec:
+        f:accessModes: {}
+        f:resources:
+          f:requests:
+            .: {}
+            f:storage: {}
+        f:storageClassName: {}
+        f:volumeMode: {}
+    manager: Mozilla
+    operation: Update
+    time: "2024-02-24T15:24:31Z"
+  - apiVersion: v1
+    fieldsType: FieldsV1
+    fieldsV1:
+      f:metadata:
+        f:annotations:
+          .: {}
+          f:pv.kubernetes.io/bind-completed: {}
+          f:pv.kubernetes.io/bound-by-controller: {}
+          f:volume.beta.kubernetes.io/storage-provisioner: {}
+          f:volume.kubernetes.io/storage-provisioner: {}
+      f:spec:
+        f:volumeName: {}
+    manager: kube-controller-manager
+    operation: Update
+    time: "2024-02-24T15:24:32Z"
+  - apiVersion: v1
+    fieldsType: FieldsV1
+    fieldsV1:
+      f:status:
+        f:accessModes: {}
+        f:capacity:
+          .: {}
+          f:storage: {}
+        f:phase: {}
+    manager: kube-controller-manager
+    operation: Update
+    subresource: status
+    time: "2024-02-24T15:24:32Z"
+  name: test
+  namespace: default
+  resourceVersion: "948647140"
+  uid: f0692a61-0ffe-4fd5-b00f-0b95f3654fb9
+spec:
+  accessModes:
+  - ReadWriteOnce
+  resources:
+    requests:
+      storage: 1Gi
+  storageClassName: ocs-storagecluster-cephfs
+  volumeMode: Filesystem
+  volumeName: pvc-f0692a61-0ffe-4fd5-b00f-0b95f3654fb9
+status:
+  accessModes:
+  - ReadWriteOnce
+  capacity:
+    storage: 1Gi
+  phase: Bound
+`),
+			ExpectedObject: []byte(`
+apiVersion: v1
+kind: PersistentVolumeClaim
+metadata:
+  annotations:
+    pv.kubernetes.io/bind-completed: "yes"
+    pv.kubernetes.io/bound-by-controller: "yes"
+    volume.beta.kubernetes.io/storage-provisioner: openshift-storage.cephfs.csi.ceph.com
+    volume.kubernetes.io/storage-provisioner: openshift-storage.cephfs.csi.ceph.com
+  creationTimestamp: "2024-02-24T15:24:31Z"
+  finalizers:
+  - kubernetes.io/pvc-protection
+  managedFields:
+  - apiVersion: v1
+    fieldsType: FieldsV1
+    fieldsV1:
+      f:spec:
+        f:accessModes: {}
+        f:resources:
+          f:requests:
+            .: {}
+            f:storage: {}
+        f:storageClassName: {}
+        f:volumeMode: {}
+    manager: Mozilla
+    operation: Update
+    time: "2024-02-24T15:24:31Z"
+  - apiVersion: v1
+    fieldsType: FieldsV1
+    fieldsV1:
+      f:metadata:
+        f:annotations:
+          .: {}
+          f:pv.kubernetes.io/bind-completed: {}
+          f:pv.kubernetes.io/bound-by-controller: {}
+          f:volume.beta.kubernetes.io/storage-provisioner: {}
+          f:volume.kubernetes.io/storage-provisioner: {}
+      f:spec:
+        f:volumeName: {}
+    manager: kube-controller-manager
+    operation: Update
+    time: "2024-02-24T15:24:32Z"
+  - apiVersion: v1
+    fieldsType: FieldsV1
+    fieldsV1:
+      f:status:
+        f:accessModes: {}
+        f:capacity:
+          .: {}
+          f:storage: {}
+        f:phase: {}
+    manager: kube-controller-manager
+    operation: Apply
+    subresource: status
+    time: "2024-02-24T15:24:32Z"
+  name: test
+  namespace: default
+  resourceVersion: "948647140"
+  uid: f0692a61-0ffe-4fd5-b00f-0b95f3654fb9
+spec:
+  accessModes:
+  - ReadWriteOnce
+  resources:
+    requests:
+      storage: 1Gi
+  storageClassName: ocs-storagecluster-cephfs
+  volumeMode: Filesystem
+  volumeName: pvc-f0692a61-0ffe-4fd5-b00f-0b95f3654fb9
+status:
+  accessModes:
+  - ReadWriteOnce
+  capacity:
+    storage: 1Gi
+  phase: Bound
 `),
 		},
 	}
@@ -1096,6 +1254,7 @@ metadata:
 				upgraded,
 				sets.New(testCase.CSAManagers...),
 				testCase.SSAManager,
+				testCase.Options...,
 			)
 
 			if err != nil {
@@ -1118,7 +1277,7 @@ metadata:
 
 			initialCopy := initialObject.DeepCopyObject()
 			patchBytes, err := csaupgrade.UpgradeManagedFieldsPatch(
-				initialCopy, sets.New(testCase.CSAManagers...), testCase.SSAManager)
+				initialCopy, sets.New(testCase.CSAManagers...), testCase.SSAManager, testCase.Options...)
 
 			if err != nil {
 				t.Fatal(err)