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remove mutation of liveObj in fieldManager.Apply

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also document manager interface
This commit is contained in:
Alexander Zielenski 2021-11-09 11:40:20 -08:00
parent 14b67bece4
commit 0963704178
2 changed files with 11 additions and 4 deletions
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11
staging/src/k8s.io/apiserver/pkg/endpoints/handlers/fieldmanager/fieldmanager.go
View File

@ -56,10 +56,18 @@ type Manager interface {
// Update is used when the object has already been merged (non-apply
// use-case), and simply updates the managed fields in the output
// object.
// * `liveObj` is not mutated by this function
// * `newObj` may be mutated by this function
// Returns the new object with managedFields removed, and the object's new
// proposed managedFields separately.
Update(liveObj, newObj runtime.Object, managed Managed, manager string) (runtime.Object, Managed, error)
// Apply is used when server-side apply is called, as it merges the
// object and updates the managed fields.
// * `liveObj` is not mutated by this function
// * `newObj` may be mutated by this function
// Returns the new object with managedFields removed, and the object's new
// proposed managedFields separately.
Apply(liveObj, appliedObj runtime.Object, managed Managed, fieldManager string, force bool) (runtime.Object, Managed, error)
}
@ -173,7 +181,6 @@ func (f *FieldManager) Update(liveObj, newObj runtime.Object, manager string) (o
return newObj, nil
}
internal.RemoveObjectManagedFields(liveObj)
internal.RemoveObjectManagedFields(newObj)
if object, managed, err = f.fieldManager.Update(liveObj, newObj, managed, manager); err != nil {
@ -242,8 +249,6 @@ func (f *FieldManager) Apply(liveObj, appliedObj runtime.Object, manager string,
return nil, fmt.Errorf("failed to decode managed fields: %v", err)
}
internal.RemoveObjectManagedFields(liveObj)
object, managed, err = f.fieldManager.Apply(liveObj, appliedObj, managed, manager, force)
if err != nil {
if conflicts, ok := err.(merge.Conflicts); ok {

4
staging/src/k8s.io/apiserver/pkg/endpoints/handlers/fieldmanager/managedfieldsupdater.go
View File

@ -21,6 +21,7 @@ import (
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/runtime"
"k8s.io/apiserver/pkg/endpoints/handlers/fieldmanager/internal"
"sigs.k8s.io/structured-merge-diff/v4/fieldpath"
)
@ -80,7 +81,8 @@ func (f *managedFieldsUpdater) Apply(liveObj, appliedObj runtime.Object, managed
managed.Times()[fieldManager] = &metav1.Time{Time: time.Now().UTC()}
}
if object == nil {
object = liveObj
object = liveObj.DeepCopyObject()
internal.RemoveObjectManagedFields(object)
}
return object, managed, nil
}