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Add TPR to CRD migration helper.

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This commit is contained in:
Anthony Yeh
2017-05-30 20:24:12 -07:00
parent e0a6cde6f4
commit ba59e14d44
13 changed files with 313 additions and 26 deletions
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5
pkg/registry/extensions/thirdpartyresourcedata/storage/BUILD
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@@ -35,9 +35,14 @@ go_library(
"//pkg/apis/extensions:go_default_library",
"//pkg/registry/cachesize:go_default_library",
"//pkg/registry/extensions/thirdpartyresourcedata:go_default_library",
"//vendor/k8s.io/apimachinery/pkg/api/errors:go_default_library",
"//vendor/k8s.io/apimachinery/pkg/apis/meta/internalversion:go_default_library",
"//vendor/k8s.io/apimachinery/pkg/apis/meta/v1:go_default_library",
"//vendor/k8s.io/apimachinery/pkg/runtime:go_default_library",
"//vendor/k8s.io/apiserver/pkg/endpoints/request:go_default_library",
"//vendor/k8s.io/apiserver/pkg/registry/generic:go_default_library",
"//vendor/k8s.io/apiserver/pkg/registry/generic/registry:go_default_library",
"//vendor/k8s.io/apiserver/pkg/registry/rest:go_default_library",
],
)

56
pkg/registry/extensions/thirdpartyresourcedata/storage/storage.go
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@@ -18,20 +18,72 @@ package storage
import (
"strings"
"sync/atomic"
"k8s.io/apimachinery/pkg/api/errors"
metainternalversion "k8s.io/apimachinery/pkg/apis/meta/internalversion"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/runtime"
genericapirequest "k8s.io/apiserver/pkg/endpoints/request"
"k8s.io/apiserver/pkg/registry/generic"
genericregistry "k8s.io/apiserver/pkg/registry/generic/registry"
"k8s.io/apiserver/pkg/registry/rest"
"k8s.io/kubernetes/pkg/api"
"k8s.io/kubernetes/pkg/apis/extensions"
"k8s.io/kubernetes/pkg/registry/cachesize"
"k8s.io/kubernetes/pkg/registry/extensions/thirdpartyresourcedata"
)
// REST implements a RESTStorage for ThirdPartyResourceData
// errFrozen is a transient error to indicate that clients should retry with backoff.
var errFrozen = errors.NewServiceUnavailable("TPR data is temporarily frozen")
// REST implements a RESTStorage for ThirdPartyResourceData.
type REST struct {
*genericregistry.Store
kind string
kind string
frozen atomic.Value
}
// Freeze causes all future calls to Create/Update/Delete/DeleteCollection to return a transient error.
// This is irreversible and meant for use when the TPR data is being deleted or migrated/abandoned.
func (r *REST) Freeze() {
r.frozen.Store(true)
}
func (r *REST) isFrozen() bool {
return r.frozen.Load() != nil
}
// Create is a wrapper to support Freeze.
func (r *REST) Create(ctx genericapirequest.Context, obj runtime.Object) (runtime.Object, error) {
if r.isFrozen() {
return nil, errFrozen
}
return r.Store.Create(ctx, obj)
}
// Update is a wrapper to support Freeze.
func (r *REST) Update(ctx genericapirequest.Context, name string, objInfo rest.UpdatedObjectInfo) (runtime.Object, bool, error) {
if r.isFrozen() {
return nil, false, errFrozen
}
return r.Store.Update(ctx, name, objInfo)
}
// Delete is a wrapper to support Freeze.
func (r *REST) Delete(ctx genericapirequest.Context, name string, options *metav1.DeleteOptions) (runtime.Object, bool, error) {
if r.isFrozen() {
return nil, false, errFrozen
}
return r.Store.Delete(ctx, name, options)
}
// DeleteCollection is a wrapper to support Freeze.
func (r *REST) DeleteCollection(ctx genericapirequest.Context, options *metav1.DeleteOptions, listOptions *metainternalversion.ListOptions) (runtime.Object, error) {
if r.isFrozen() {
return nil, errFrozen
}
return r.Store.DeleteCollection(ctx, options, listOptions)
}
// NewREST returns a registry which will store ThirdPartyResourceData in the given helper