mirror of
https://github.com/ceph/ceph-csi.git
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59 lines
1.8 KiB
Go
59 lines
1.8 KiB
Go
/*
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Copyright 2018 The Ceph-CSI 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 util
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import (
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"errors"
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"k8s.io/klog"
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)
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// ForAllFunc is a unary predicate for visiting all cache entries
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// matching the `pattern' in CachePersister's ForAll function.
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type ForAllFunc func(identifier string) error
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// CacheEntryNotFound is an error type for "Not Found" cache errors
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type CacheEntryNotFound struct {
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error
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}
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// CachePersister interface implemented for store
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type CachePersister interface {
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Create(identifier string, data interface{}) error
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Get(identifier string, data interface{}) error
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ForAll(pattern string, destObj interface{}, f ForAllFunc) error
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Delete(identifier string) error
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}
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// NewCachePersister returns CachePersister based on store
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func NewCachePersister(metadataStore, pluginPath string) (CachePersister, error) {
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if metadataStore == "k8s_configmap" {
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klog.Infof("cache-perister: using kubernetes configmap as metadata cache persister")
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k8scm := &K8sCMCache{}
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k8scm.Client = NewK8sClient()
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k8scm.Namespace = GetK8sNamespace()
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return k8scm, nil
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} else if metadataStore == "node" {
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klog.Infof("cache-persister: using node as metadata cache persister")
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nc := &NodeCache{}
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nc.BasePath = pluginPath
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nc.CacheDir = "controller"
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return nc, nil
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}
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return nil, errors.New("cache-persister: couldn't parse metadatastorage flag")
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}
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