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Make pvc storage class annotation immutable after create

pull/6/head
Scott Creeley 2016-11-04 14:06:34 -04:00
parent a2d5df40af
commit a76854ca97
3 changed files with 117 additions and 1 deletions
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2
pkg/api/validation/BUILD
View File

@ -30,6 +30,7 @@ go_library(
"//pkg/api/util:go_default_library",
"//pkg/api/v1:go_default_library",
"//pkg/apimachinery/registered:go_default_library",
"//pkg/apis/storage/util:go_default_library",
"//pkg/capabilities:go_default_library",
"//pkg/labels:go_default_library",
"//pkg/runtime:go_default_library",
@ -75,6 +76,7 @@ go_test(
"//pkg/api/unversioned:go_default_library",
"//pkg/apimachinery/registered:go_default_library",
"//pkg/apis/extensions:go_default_library",
"//pkg/apis/storage/util:go_default_library",
"//pkg/capabilities:go_default_library",
"//pkg/runtime:go_default_library",
"//pkg/security/apparmor:go_default_library",

16
pkg/api/validation/validation.go
View File

@ -34,6 +34,7 @@ import (
apiservice "k8s.io/kubernetes/pkg/api/service"
unversionedvalidation "k8s.io/kubernetes/pkg/api/unversioned/validation"
"k8s.io/kubernetes/pkg/api/v1"
storageutil "k8s.io/kubernetes/pkg/apis/storage/util"
"k8s.io/kubernetes/pkg/capabilities"
"k8s.io/kubernetes/pkg/labels"
"k8s.io/kubernetes/pkg/runtime/schema"
@ -351,6 +352,15 @@ func ValidateImmutableField(newVal, oldVal interface{}, fldPath *field.Path) fie
return allErrs
}
func ValidateImmutableAnnotation(newVal string, oldVal string, annotation string, fldPath *field.Path) field.ErrorList {
allErrs := field.ErrorList{}
if oldVal != newVal {
allErrs = append(allErrs, field.Invalid(fldPath.Child("annotations", annotation), newVal, fieldImmutableErrorMsg))
}
return allErrs
}
// ValidateObjectMeta validates an object's metadata on creation. It expects that name generation has already
// been performed.
// It doesn't return an error for rootscoped resources with namespace, because namespace should already be cleared before.
@ -1262,11 +1272,15 @@ func ValidatePersistentVolumeClaimUpdate(newPvc, oldPvc *api.PersistentVolumeCla
oldPvc.Spec.VolumeName = newPvc.Spec.VolumeName
defer func() { oldPvc.Spec.VolumeName = "" }()
}
// changes to Spec are not allowed, but updates to label/annotations are OK.
// changes to Spec are not allowed, but updates to label/and some annotations are OK.
// no-op updates pass validation.
if !api.Semantic.DeepEqual(newPvc.Spec, oldPvc.Spec) {
allErrs = append(allErrs, field.Forbidden(field.NewPath("spec"), "field is immutable after creation"))
}
// storageclass annotation should be immutable after creation
allErrs = append(allErrs, ValidateImmutableAnnotation(newPvc.ObjectMeta.Annotations[storageutil.StorageClassAnnotation], oldPvc.ObjectMeta.Annotations[storageutil.StorageClassAnnotation], storageutil.StorageClassAnnotation, field.NewPath("metadata"))...)
newPvc.Status = oldPvc.Status
return allErrs
}

100
pkg/api/validation/validation_test.go
View File

@ -28,6 +28,7 @@ import (
"k8s.io/kubernetes/pkg/api/service"
"k8s.io/kubernetes/pkg/api/unversioned"
"k8s.io/kubernetes/pkg/apimachinery/registered"
storageutil "k8s.io/kubernetes/pkg/apis/storage/util"
"k8s.io/kubernetes/pkg/capabilities"
"k8s.io/kubernetes/pkg/security/apparmor"
"k8s.io/kubernetes/pkg/util/intstr"
@ -661,6 +662,36 @@ func testVolumeClaim(name string, namespace string, spec api.PersistentVolumeCla
}
}
func testVolumeClaimStorageClass(name string, namespace string, annval string, spec api.PersistentVolumeClaimSpec) *api.PersistentVolumeClaim {
annotations := map[string]string{
storageutil.StorageClassAnnotation: annval,
}
return &api.PersistentVolumeClaim{
ObjectMeta: api.ObjectMeta{
Name: name,
Namespace: namespace,
Annotations: annotations,
},
Spec: spec,
}
}
func testVolumeClaimAnnotation(name string, namespace string, ann string, annval string, spec api.PersistentVolumeClaimSpec) *api.PersistentVolumeClaim {
annotations := map[string]string{
ann: annval,
}
return &api.PersistentVolumeClaim{
ObjectMeta: api.ObjectMeta{
Name: name,
Namespace: namespace,
Annotations: annotations,
},
Spec: spec,
}
}
func TestValidatePersistentVolumeClaim(t *testing.T) {
scenarios := map[string]struct {
isExpectedFailure bool
@ -814,6 +845,26 @@ func TestValidatePersistentVolumeClaimUpdate(t *testing.T) {
},
},
})
validClaimStorageClass := testVolumeClaimStorageClass("foo", "ns", "fast", api.PersistentVolumeClaimSpec{
AccessModes: []api.PersistentVolumeAccessMode{
api.ReadOnlyMany,
},
Resources: api.ResourceRequirements{
Requests: api.ResourceList{
api.ResourceName(api.ResourceStorage): resource.MustParse("10G"),
},
},
})
validClaimAnnotation := testVolumeClaimAnnotation("foo", "ns", "description", "foo-description", api.PersistentVolumeClaimSpec{
AccessModes: []api.PersistentVolumeAccessMode{
api.ReadOnlyMany,
},
Resources: api.ResourceRequirements{
Requests: api.ResourceList{
api.ResourceName(api.ResourceStorage): resource.MustParse("10G"),
},
},
})
validUpdateClaim := testVolumeClaim("foo", "ns", api.PersistentVolumeClaimSpec{
AccessModes: []api.PersistentVolumeAccessMode{
api.ReadWriteOnce,
@ -849,6 +900,40 @@ func TestValidatePersistentVolumeClaimUpdate(t *testing.T) {
},
VolumeName: "volume",
})
invalidUpdateClaimStorageClass := testVolumeClaimStorageClass("foo", "ns", "fast2", api.PersistentVolumeClaimSpec{
AccessModes: []api.PersistentVolumeAccessMode{
api.ReadOnlyMany,
},
Resources: api.ResourceRequirements{
Requests: api.ResourceList{
api.ResourceName(api.ResourceStorage): resource.MustParse("10G"),
},
},
VolumeName: "volume",
})
validUpdateClaimMutableAnnotation := testVolumeClaimAnnotation("foo", "ns", "description", "updated-or-added-foo-description", api.PersistentVolumeClaimSpec{
AccessModes: []api.PersistentVolumeAccessMode{
api.ReadOnlyMany,
},
Resources: api.ResourceRequirements{
Requests: api.ResourceList{
api.ResourceName(api.ResourceStorage): resource.MustParse("10G"),
},
},
VolumeName: "volume",
})
validAddClaimAnnotation := testVolumeClaimAnnotation("foo", "ns", "description", "updated-or-added-foo-description", api.PersistentVolumeClaimSpec{
AccessModes: []api.PersistentVolumeAccessMode{
api.ReadWriteOnce,
api.ReadOnlyMany,
},
Resources: api.ResourceRequirements{
Requests: api.ResourceList{
api.ResourceName(api.ResourceStorage): resource.MustParse("10G"),
},
},
VolumeName: "volume",
})
scenarios := map[string]struct {
isExpectedFailure bool
oldClaim *api.PersistentVolumeClaim
@ -874,6 +959,21 @@ func TestValidatePersistentVolumeClaimUpdate(t *testing.T) {
oldClaim: validUpdateClaim,
newClaim: invalidUpdateClaimAccessModes,
},
"invalid-update-change-storage-class-annotation-after-creation": {
isExpectedFailure: true,
oldClaim: validClaimStorageClass,
newClaim: invalidUpdateClaimStorageClass,
},
"valid-update-mutable-annotation": {
isExpectedFailure: false,
oldClaim: validClaimAnnotation,
newClaim: validUpdateClaimMutableAnnotation,
},
"valid-update-add-annotation": {
isExpectedFailure: false,
oldClaim: validClaim,
newClaim: validAddClaimAnnotation,
},
}
for name, scenario := range scenarios {