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etcd.go
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etcd.go
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package etcd
import (
kapi "k8s.io/kubernetes/pkg/api"
"k8s.io/kubernetes/pkg/fields"
"k8s.io/kubernetes/pkg/labels"
"k8s.io/kubernetes/pkg/registry/generic"
etcdgeneric "k8s.io/kubernetes/pkg/registry/generic/etcd"
"k8s.io/kubernetes/pkg/runtime"
"k8s.io/kubernetes/pkg/storage"
"github.com/openshift/origin/pkg/authorization/registry/subjectaccessreview"
"github.com/openshift/origin/pkg/image/api"
"github.com/openshift/origin/pkg/image/registry/imagestream"
)
// REST implements a RESTStorage for image streams against etcd.
type REST struct {
*etcdgeneric.Etcd
subjectAccessReviewRegistry subjectaccessreview.Registry
}
// NewREST returns a new REST.
func NewREST(s storage.Interface, defaultRegistry imagestream.DefaultRegistry, subjectAccessReviewRegistry subjectaccessreview.Registry) (*REST, *StatusREST, *InternalREST) {
prefix := "/imagestreams"
store := etcdgeneric.Etcd{
NewFunc: func() runtime.Object { return &api.ImageStream{} },
// NewListFunc returns an object capable of storing results of an etcd list.
NewListFunc: func() runtime.Object { return &api.ImageStreamList{} },
// Produces a path that etcd understands, to the root of the resource
// by combining the namespace in the context with the given prefix.
KeyRootFunc: func(ctx kapi.Context) string {
return etcdgeneric.NamespaceKeyRootFunc(ctx, prefix)
},
// Produces a path that etcd understands, to the resource by combining
// the namespace in the context with the given prefix
KeyFunc: func(ctx kapi.Context, name string) (string, error) {
return etcdgeneric.NamespaceKeyFunc(ctx, prefix, name)
},
// Retrieve the name field of an image
ObjectNameFunc: func(obj runtime.Object) (string, error) {
return obj.(*api.ImageStream).Name, nil
},
// Used to match objects based on labels/fields for list and watch
PredicateFunc: func(label labels.Selector, field fields.Selector) generic.Matcher {
return imagestream.MatchImageStream(label, field)
},
QualifiedResource: api.Resource("imagestreams"),
ReturnDeletedObject: false,
Storage: s,
}
strategy := imagestream.NewStrategy(defaultRegistry, subjectAccessReviewRegistry)
rest := &REST{subjectAccessReviewRegistry: subjectAccessReviewRegistry}
strategy.ImageStreamGetter = rest
statusStore := store
statusStore.UpdateStrategy = imagestream.NewStatusStrategy(strategy)
internalStore := store
internalStrategy := imagestream.NewInternalStrategy(strategy)
internalStore.CreateStrategy = internalStrategy
internalStore.UpdateStrategy = internalStrategy
store.CreateStrategy = strategy
store.UpdateStrategy = strategy
store.Decorator = strategy.Decorate
rest.Etcd = &store
return rest, &StatusREST{store: &statusStore}, &InternalREST{store: &internalStore}
}
// StatusREST implements the REST endpoint for changing the status of an image stream.
type StatusREST struct {
store *etcdgeneric.Etcd
}
func (r *StatusREST) New() runtime.Object {
return &api.ImageStream{}
}
// Update alters the status subset of an object.
func (r *StatusREST) Update(ctx kapi.Context, obj runtime.Object) (runtime.Object, bool, error) {
return r.store.Update(ctx, obj)
}
// InternalREST implements the REST endpoint for changing both the spec and status of an image stream.
type InternalREST struct {
store *etcdgeneric.Etcd
}
func (r *InternalREST) New() runtime.Object {
return &api.ImageStream{}
}
// Create alters both the spec and status of the object.
func (r *InternalREST) Create(ctx kapi.Context, obj runtime.Object) (runtime.Object, error) {
return r.store.Create(ctx, obj)
}
// Update alters both the spec and status of the object.
func (r *InternalREST) Update(ctx kapi.Context, obj runtime.Object) (runtime.Object, bool, error) {
return r.store.Update(ctx, obj)
}