mirror of
https://github.com/ceph/ceph-csi.git
synced 2024-11-14 02:10:21 +00:00
59 lines
1.8 KiB
Go
59 lines
1.8 KiB
Go
/*
|
|
Copyright 2018 The Ceph-CSI Authors.
|
|
|
|
Licensed under the Apache License, Version 2.0 (the "License");
|
|
you may not use this file except in compliance with the License.
|
|
You may obtain a copy of the License at
|
|
|
|
http://www.apache.org/licenses/LICENSE-2.0
|
|
|
|
Unless required by applicable law or agreed to in writing, software
|
|
distributed under the License is distributed on an "AS IS" BASIS,
|
|
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
See the License for the specific language governing permissions and
|
|
limitations under the License.
|
|
*/
|
|
|
|
package util
|
|
|
|
import (
|
|
"errors"
|
|
|
|
"k8s.io/klog"
|
|
)
|
|
|
|
// ForAllFunc is a unary predicate for visiting all cache entries
|
|
// matching the `pattern' in CachePersister's ForAll function.
|
|
type ForAllFunc func(identifier string) error
|
|
|
|
// CacheEntryNotFound is an error type for "Not Found" cache errors
|
|
type CacheEntryNotFound struct {
|
|
error
|
|
}
|
|
|
|
// CachePersister interface implemented for store
|
|
type CachePersister interface {
|
|
Create(identifier string, data interface{}) error
|
|
Get(identifier string, data interface{}) error
|
|
ForAll(pattern string, destObj interface{}, f ForAllFunc) error
|
|
Delete(identifier string) error
|
|
}
|
|
|
|
// NewCachePersister returns CachePersister based on store
|
|
func NewCachePersister(metadataStore, pluginPath string) (CachePersister, error) {
|
|
if metadataStore == "k8s_configmap" {
|
|
klog.Infof("cache-perister: using kubernetes configmap as metadata cache persister")
|
|
k8scm := &K8sCMCache{}
|
|
k8scm.Client = NewK8sClient()
|
|
k8scm.Namespace = GetK8sNamespace()
|
|
return k8scm, nil
|
|
} else if metadataStore == "node" {
|
|
klog.Infof("cache-persister: using node as metadata cache persister")
|
|
nc := &NodeCache{}
|
|
nc.BasePath = pluginPath
|
|
nc.CacheDir = "controller"
|
|
return nc, nil
|
|
}
|
|
return nil, errors.New("cache-persister: couldn't parse metadatastorage flag")
|
|
}
|