/
peerstore.go
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/
peerstore.go
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/*
* Copyright 2018 The openwallet Authors
* This file is part of the openwallet library.
*
* The openwallet library is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* The openwallet library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*/
package owtp
import (
"encoding/json"
"github.com/blocktree/openwallet/v2/log"
"sync"
)
// Peerstore 节点存储器
type Peerstore interface {
// SaveAddr 保存节点地址
SavePeer(peer Peer)
//
//// GetAddr 获取节点地址
//GetPeer(id string) Peer
//
//// DeleteAddr 删除节点的地址
//DeletePeer(id string)
//PeerInfo 节点信息
PeerInfo(id string) PeerInfo
// Get 获取节点属性
Get(id string, key string) interface{}
// GetString
GetString(id string, key string) string
// Put 设置节点属性
Put(id string, key string, val interface{}) error
// Delete 设置节点属性
Delete(id string, key string) error
//Destroy 清空store数据
Destroy(id string) error
}
type owtpPeerstore struct {
//onlinePeers map[string]Peer
//peers map[string]Peer
peerInfos map[string]PeerAttribute
mu sync.RWMutex
}
// NewPeerstore 创建支持OWTP协议的Peerstore
func NewOWTPPeerstore() *owtpPeerstore {
store := owtpPeerstore{
peerInfos: make(map[string]PeerAttribute),
}
return &store
}
// SaveAddr 保存节点
func (store *owtpPeerstore) SavePeer(peer Peer) {
if peer == nil {
return
}
config := peer.ConnectConfig()
b, err := json.Marshal(config)
if err == nil {
store.Put(peer.PID(), peer.PID(), string(b))
}
}
//PeerInfo 节点信息
func (store *owtpPeerstore) PeerInfo(id string) PeerInfo {
var config ConnectConfig
b, ok := store.Get(id, id).(string)
if ok {
err := json.Unmarshal([]byte(b), &config)
if err != nil {
log.Errorf("json.Unmarshal PeerInfo failed")
}
}
return PeerInfo{
ID: id,
Config: config,
}
}
// Get 获取节点属性
func (store *owtpPeerstore) Get(id string, key string) interface{} {
store.mu.RLock()
defer store.mu.RUnlock()
if store.peerInfos == nil {
return nil
}
peerAttribute := store.peerInfos[id]
if peerAttribute == nil {
return nil
}
return peerAttribute[key]
}
// GetString
func (store *owtpPeerstore) GetString(id string, key string) string {
val := store.Get(id, key)
if val != nil {
if str, ok := val.(string); ok {
return str
}
}
return ""
}
// Put 设置节点属性
func (store *owtpPeerstore) Put(id string, key string, val interface{}) error {
store.mu.Lock()
defer store.mu.Unlock()
if store.peerInfos == nil {
store.peerInfos = make(map[string]PeerAttribute)
}
peerAttribute := store.peerInfos[id]
if peerAttribute == nil {
peerAttribute = make(map[string]interface{})
store.peerInfos[id] = peerAttribute
}
peerAttribute[key] = val
store.peerInfos[id] = peerAttribute
return nil
}
//Delete
func (store *owtpPeerstore) Delete(id string, key string) error {
store.mu.Lock()
defer store.mu.Unlock()
if store.peerInfos == nil {
return nil
}
peerAttribute := store.peerInfos[id]
if peerAttribute == nil {
return nil
}
delete(peerAttribute, key)
store.peerInfos[id] = peerAttribute
return nil
}
//Destroy
func (store *owtpPeerstore) Destroy(id string) error {
store.mu.Lock()
defer store.mu.Unlock()
peerAttribute := store.peerInfos[id]
if peerAttribute == nil {
return nil
}
peerAttribute = make(PeerAttribute)
store.peerInfos[id] = peerAttribute
return nil
}