69 lines
2.2 KiB
Go
69 lines
2.2 KiB
Go
/*
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Copyright 2015 The Kubernetes Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package registry
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import (
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"k8s.io/kubernetes/pkg/api/rest"
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"k8s.io/kubernetes/pkg/registry/generic"
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"k8s.io/kubernetes/pkg/runtime"
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"k8s.io/kubernetes/pkg/storage"
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etcdstorage "k8s.io/kubernetes/pkg/storage/etcd"
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"k8s.io/kubernetes/pkg/storage/storagebackend"
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"k8s.io/kubernetes/pkg/storage/storagebackend/factory"
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)
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// Creates a cacher based given storageConfig.
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func StorageWithCacher(
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storageConfig *storagebackend.Config,
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capacity int,
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objectType runtime.Object,
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resourcePrefix string,
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scopeStrategy rest.NamespaceScopedStrategy,
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newListFunc func() runtime.Object,
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triggerFunc storage.TriggerPublisherFunc) (storage.Interface, factory.DestroyFunc) {
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s, d := generic.NewRawStorage(storageConfig)
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// TODO: we would change this later to make storage always have cacher and hide low level KV layer inside.
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// Currently it has two layers of same storage interface -- cacher and low level kv.
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cacherConfig := storage.CacherConfig{
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CacheCapacity: capacity,
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Storage: s,
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Versioner: etcdstorage.APIObjectVersioner{},
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Type: objectType,
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ResourcePrefix: resourcePrefix,
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NewListFunc: newListFunc,
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TriggerPublisherFunc: triggerFunc,
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Codec: storageConfig.Codec,
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}
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if scopeStrategy.NamespaceScoped() {
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cacherConfig.KeyFunc = func(obj runtime.Object) (string, error) {
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return storage.NamespaceKeyFunc(resourcePrefix, obj)
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}
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} else {
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cacherConfig.KeyFunc = func(obj runtime.Object) (string, error) {
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return storage.NoNamespaceKeyFunc(resourcePrefix, obj)
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}
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}
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cacher := storage.NewCacherFromConfig(cacherConfig)
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destroyFunc := func() {
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cacher.Stop()
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d()
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}
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return cacher, destroyFunc
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}
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