/
base.go
289 lines (262 loc) · 8.25 KB
/
base.go
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// Copyright Fuzamei Corp. 2018 All Rights Reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package store
import (
"sync"
dbm "github.com/PhenixChain/devchain/common/db"
clog "github.com/PhenixChain/devchain/common/log"
log "github.com/PhenixChain/devchain/common/log/log15"
"github.com/PhenixChain/devchain/queue"
"github.com/PhenixChain/devchain/types"
"github.com/PhenixChain/devchain/util"
)
/*
模块主要的功能:
//批量写
1. EventStoreSet(stateHash, (k1,v1),(k2,v2),(k3,v3)) -> 返回 stateHash
//批量读
2. EventStoreGet(stateHash, k1,k2,k3)
*/
var slog = log.New("module", "store")
// EmptyRoot mavl树空的根hash
var EmptyRoot [32]byte
// SetLogLevel set log level
func SetLogLevel(level string) {
clog.SetLogLevel(level)
}
// DisableLog disable log
func DisableLog() {
slog.SetHandler(log.DiscardHandler())
}
// SubStore store db的操作接口
type SubStore interface {
Set(datas *types.StoreSet, sync bool) ([]byte, error)
Get(datas *types.StoreGet) [][]byte
MemSet(datas *types.StoreSet, sync bool) ([]byte, error)
Commit(hash *types.ReqHash) ([]byte, error)
Rollback(req *types.ReqHash) ([]byte, error)
Del(req *types.StoreDel) ([]byte, error)
IterateRangeByStateHash(statehash []byte, start []byte, end []byte, ascending bool, fn func(key, value []byte) bool)
ProcEvent(msg *queue.Message)
//用升级本地交易构建store
MemSetUpgrade(datas *types.StoreSet, sync bool) ([]byte, error)
CommitUpgrade(hash *types.ReqHash) ([]byte, error)
}
// BaseStore 基础的store结构体
type BaseStore struct {
db dbm.DB
qclient queue.Client
done chan struct{}
child SubStore
wg sync.WaitGroup
}
// NewBaseStore new base store struct
func NewBaseStore(cfg *types.Store) *BaseStore {
db := dbm.NewDB("store", cfg.Driver, cfg.DbPath, cfg.DbCache)
db.SetCacheSize(102400)
store := &BaseStore{db: db}
store.done = make(chan struct{}, 1)
slog.Info("Enter store " + cfg.Name)
return store
}
// SetQueueClient set client queue for recv msg
func (store *BaseStore) SetQueueClient(c queue.Client) {
store.qclient = c
store.qclient.Sub("store")
//recv 消息的处理
go func() {
for msg := range store.qclient.Recv() {
//slog.Debug("store recv", "msg", msg)
store.processMessage(msg)
//slog.Debug("store process end", "msg.id", msg.Id)
}
store.done <- struct{}{}
}()
}
//Wait wait for basestore ready
func (store *BaseStore) Wait() {}
func (store *BaseStore) processMessage(msg *queue.Message) {
client := store.qclient
if msg.Ty == types.EventStoreSet {
store.wg.Add(1)
go func() {
defer store.wg.Done()
datas := msg.GetData().(*types.StoreSetWithSync)
hash, err := store.child.Set(datas.Storeset, datas.Sync)
if err != nil {
msg.Reply(client.NewMessage("", types.EventStoreSetReply, err))
return
}
msg.Reply(client.NewMessage("", types.EventStoreSetReply, &types.ReplyHash{Hash: hash}))
}()
} else if msg.Ty == types.EventStoreGet {
store.wg.Add(1)
go func() {
defer store.wg.Done()
datas := msg.GetData().(*types.StoreGet)
values := store.child.Get(datas)
msg.Reply(client.NewMessage("", types.EventStoreGetReply, &types.StoreReplyValue{Values: values}))
}()
} else if msg.Ty == types.EventStoreMemSet { //只是在内存中set 一下,并不改变状态
store.wg.Add(1)
go func() {
defer store.wg.Done()
datas := msg.GetData().(*types.StoreSetWithSync)
var hash []byte
var err error
if datas.Upgrade {
hash, err = store.child.MemSetUpgrade(datas.Storeset, datas.Sync)
} else {
hash, err = store.child.MemSet(datas.Storeset, datas.Sync)
}
if err != nil {
msg.Reply(client.NewMessage("", types.EventStoreSetReply, err))
return
}
msg.Reply(client.NewMessage("", types.EventStoreSetReply, &types.ReplyHash{Hash: hash}))
}()
} else if msg.Ty == types.EventStoreCommit { //把内存中set 的交易 commit
store.wg.Add(1)
go func() {
defer store.wg.Done()
req := msg.GetData().(*types.ReqHash)
var hash []byte
var err error
if req.Upgrade {
hash, err = store.child.CommitUpgrade(req)
} else {
hash, err = store.child.Commit(req)
}
if hash == nil {
msg.Reply(client.NewMessage("", types.EventStoreCommit, types.ErrHashNotFound))
if err == types.ErrDataBaseDamage { //如果是数据库写失败,需要上报给用户
go util.ReportErrEventToFront(slog, client, "store", "wallet", err)
}
} else {
msg.Reply(client.NewMessage("", types.EventStoreCommit, &types.ReplyHash{Hash: hash}))
}
}()
} else if msg.Ty == types.EventStoreRollback {
store.wg.Add(1)
go func() {
defer store.wg.Done()
req := msg.GetData().(*types.ReqHash)
hash, err := store.child.Rollback(req)
if err != nil {
msg.Reply(client.NewMessage("", types.EventStoreRollback, types.ErrHashNotFound))
} else {
msg.Reply(client.NewMessage("", types.EventStoreRollback, &types.ReplyHash{Hash: hash}))
}
}()
} else if msg.Ty == types.EventStoreGetTotalCoins {
store.wg.Add(1)
go func() {
defer store.wg.Done()
req := msg.GetData().(*types.IterateRangeByStateHash)
resp := &types.ReplyGetTotalCoins{}
resp.Count = req.Count
store.child.IterateRangeByStateHash(req.StateHash, req.Start, req.End, true, resp.IterateRangeByStateHash)
msg.Reply(client.NewMessage("", types.EventGetTotalCoinsReply, resp))
}()
} else if msg.Ty == types.EventStoreDel {
store.wg.Add(1)
go func() {
defer store.wg.Done()
req := msg.GetData().(*types.StoreDel)
hash, err := store.child.Del(req)
if err != nil {
msg.Reply(client.NewMessage("", types.EventStoreDel, types.ErrHashNotFound))
} else {
msg.Reply(client.NewMessage("", types.EventStoreDel, &types.ReplyHash{Hash: hash}))
}
}()
} else if msg.Ty == types.EventStoreList {
store.wg.Add(1)
go func() {
defer store.wg.Done()
req := msg.GetData().(*types.StoreList)
query := NewStoreListQuery(store.child, req)
msg.Reply(client.NewMessage("", types.EventStoreListReply, query.Run()))
}()
} else {
store.wg.Add(1)
go func() {
defer store.wg.Done()
store.child.ProcEvent(msg)
}()
}
}
// SetChild 设置BaseStore中的子存储参数
func (store *BaseStore) SetChild(sub SubStore) {
store.child = sub
}
// Close 关闭BaseStore 相关资源包括数据库、client等
func (store *BaseStore) Close() {
if store.qclient != nil {
store.qclient.Close()
<-store.done
store.wg.Wait()
}
store.db.Close()
}
// GetDB 返回 store db
func (store *BaseStore) GetDB() dbm.DB {
return store.db
}
// GetQueueClient 返回store模块的client
func (store *BaseStore) GetQueueClient() queue.Client {
return store.qclient
}
// NewStoreListQuery new store list query object
func NewStoreListQuery(store SubStore, req *types.StoreList) *StorelistQuery {
reply := &types.StoreListReply{Start: req.Start, End: req.End, Suffix: req.Suffix, Count: req.Count, Mode: req.Mode}
return &StorelistQuery{StoreListReply: reply, req: req, store: store}
}
// StorelistQuery defines a type store list query
type StorelistQuery struct {
store SubStore
req *types.StoreList
*types.StoreListReply
}
// Run store list query
func (t *StorelistQuery) Run() *types.StoreListReply {
t.store.IterateRangeByStateHash(t.req.StateHash, t.req.Start, t.req.End, true, t.IterateCallBack)
return t.StoreListReply
}
// IterateCallBack store list query iterate callback
func (t *StorelistQuery) IterateCallBack(key, value []byte) bool {
if t.Mode == 1 { //[start, end)模式
if t.Num >= t.Count {
t.NextKey = key
return true
}
t.Num++
t.Keys = append(t.Keys, cloneByte(key))
t.Values = append(t.Values, cloneByte(value))
return false
}
if t.Mode == 2 { //prefix + suffix模式,要对按prefix得到的数据key进行suffix的判断,符合条件的数据才是最终要的数据
if len(key) > len(t.Suffix) {
if string(key[len(key)-len(t.Suffix):]) == string(t.Suffix) {
t.Num++
t.Keys = append(t.Keys, cloneByte(key))
t.Values = append(t.Values, cloneByte(value))
if t.Num >= t.Count {
t.NextKey = key
return true
}
return false
}
return false
}
return false
}
slog.Error("StoreListReply.IterateCallBack unsupported mode", "mode", t.Mode)
return true
}
func cloneByte(v []byte) []byte {
value := make([]byte, len(v))
copy(value, v)
return value
}