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persistence.go
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76 lines (66 loc) · 2.19 KB
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/*
* Copyright 2018 The CovenantSQL 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 consistent
import (
"github.com/CovenantSQL/CovenantSQL/crypto/kms"
"github.com/CovenantSQL/CovenantSQL/proto"
"github.com/CovenantSQL/CovenantSQL/utils/log"
)
// Persistence is the interface for consistent persistence.
type Persistence interface {
Init(storePath string, initNode []proto.Node) (err error)
SetNode(node *proto.Node) (err error)
DelNode(nodeID proto.NodeID) (err error)
Reset() error
GetAllNodeInfo() (nodes []proto.Node, err error)
}
// KMSStorage implements Persistence.
type KMSStorage struct{}
// Init implements Persistence interface.
func (s *KMSStorage) Init(storePath string, initNodes []proto.Node) (err error) {
return kms.InitPublicKeyStore(storePath, initNodes)
}
// SetNode implements Persistence interface.
func (s *KMSStorage) SetNode(node *proto.Node) (err error) {
return kms.SetNode(node)
}
// DelNode implements Persistence interface.
func (s *KMSStorage) DelNode(nodeID proto.NodeID) (err error) {
return kms.DelNode(nodeID)
}
// Reset implements Persistence interface.
func (s *KMSStorage) Reset() (err error) {
return kms.ResetBucket()
}
// GetAllNodeInfo implements Persistence interface.
func (s *KMSStorage) GetAllNodeInfo() (nodes []proto.Node, err error) {
IDs, err := kms.GetAllNodeID()
if err != nil {
log.WithError(err).Error("get all node id failed")
return
}
nodes = make([]proto.Node, 0, len(IDs))
for _, id := range IDs {
node, err := kms.GetNodeInfo(id)
if err != nil {
// this may happen, just continue
log.WithField("node", node).WithError(err).Error("get node info failed")
continue
}
nodes = append(nodes, *node)
}
return
}