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storagedb.go
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storagedb.go
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package executor
import (
"fmt"
"github.com/assetcloud/plugin/plugin/crypto/paillier"
"github.com/assetcloud/chain/client"
"github.com/assetcloud/chain/common"
dbm "github.com/assetcloud/chain/common/db"
"github.com/assetcloud/chain/types"
ety "github.com/assetcloud/plugin/plugin/dapp/storage/types"
"github.com/golang/protobuf/proto"
)
//StorageAction ...
type StorageAction struct {
api client.QueueProtocolAPI
db dbm.KV
localdb dbm.KV
txhash []byte
fromaddr string
blocktime int64
height int64
index int
}
func newStorageAction(s *storage, tx *types.Transaction, index int) *StorageAction {
hash := tx.Hash()
fromaddr := tx.From()
return &StorageAction{s.GetAPI(), s.GetStateDB(), s.GetLocalDB(), hash, fromaddr,
s.GetBlockTime(), s.GetHeight(), index}
}
//GetKVSet ...
func (s *StorageAction) GetKVSet(payload proto.Message) (kvset []*types.KeyValue) {
kvset = append(kvset, &types.KeyValue{Key: Key(common.ToHex(s.txhash)), Value: types.Encode(payload)})
return kvset
}
//ContentStorage ...
func (s *StorageAction) ContentStorage(payload *ety.ContentOnlyNotaryStorage) (*types.Receipt, error) {
//TODO 这里可以加具体得文本内容限制,超过指定大小的数据不容许写到状态数据库中
var logs []*types.ReceiptLog
var kvs []*types.KeyValue
cfg := s.api.GetConfig()
if cfg.IsDappFork(s.height, ety.StorageX, ety.ForkStorageLocalDB) {
key := payload.Key
op := payload.Op
if key == "" {
key = common.ToHex(s.txhash)
}
payload.Key = key
storage, err := QueryStorageFromLocalDB(s.localdb, key)
if op == ety.OpCreate {
if err != types.ErrNotFound {
return nil, ety.ErrKeyExisted
}
} else {
if err == nil && storage.Ty != ety.TyContentStorageAction {
return nil, ety.ErrStorageType
}
if payload.GetContent() != nil {
content := append(storage.GetContentStorage().Content, []byte(",")...)
payload.Content = append(content, payload.Content...)
}
if payload.GetValue() != "" {
value := storage.GetContentStorage().GetValue() + "," + payload.GetValue()
payload.Value = value
}
}
stg := &ety.Storage{Value: &ety.Storage_ContentStorage{ContentStorage: payload}, Ty: ety.TyContentStorageAction}
log := &types.ReceiptLog{Ty: ety.TyContentStorageLog, Log: types.Encode(stg)}
logs = append(logs, log)
} else {
log := &types.ReceiptLog{Ty: ety.TyContentStorageLog}
logs = append(logs, log)
kvs = s.GetKVSet(&ety.Storage{Value: &ety.Storage_ContentStorage{ContentStorage: payload}})
}
receipt := &types.Receipt{Ty: types.ExecOk, KV: kvs, Logs: logs}
return receipt, nil
}
//HashStorage ...
func (s *StorageAction) HashStorage(payload *ety.HashOnlyNotaryStorage) (*types.Receipt, error) {
var logs []*types.ReceiptLog
var kvs []*types.KeyValue
cfg := s.api.GetConfig()
if cfg.IsDappFork(s.height, ety.StorageX, ety.ForkStorageLocalDB) {
key := payload.Key
if key == "" {
key = common.ToHex(s.txhash)
}
_, err := QueryStorageFromLocalDB(s.localdb, key)
if err != types.ErrNotFound {
return nil, ety.ErrKeyExisted
}
payload.Key = key
stg := &ety.Storage{Value: &ety.Storage_HashStorage{HashStorage: payload}, Ty: ety.TyHashStorageAction}
log := &types.ReceiptLog{Ty: ety.TyHashStorageLog, Log: types.Encode(stg)}
logs = append(logs, log)
} else {
log := &types.ReceiptLog{Ty: ety.TyHashStorageLog}
logs = append(logs, log)
kvs = s.GetKVSet(&ety.Storage{Value: &ety.Storage_HashStorage{HashStorage: payload}})
}
receipt := &types.Receipt{Ty: types.ExecOk, KV: kvs, Logs: logs}
return receipt, nil
}
//LinkStorage ...
func (s *StorageAction) LinkStorage(payload *ety.LinkNotaryStorage) (*types.Receipt, error) {
var logs []*types.ReceiptLog
var kvs []*types.KeyValue
cfg := s.api.GetConfig()
if cfg.IsDappFork(s.height, ety.StorageX, ety.ForkStorageLocalDB) {
key := payload.Key
if key == "" {
key = common.ToHex(s.txhash)
}
payload.Key = key
_, err := QueryStorageFromLocalDB(s.localdb, key)
if err != types.ErrNotFound {
return nil, ety.ErrKeyExisted
}
stg := &ety.Storage{Value: &ety.Storage_LinkStorage{LinkStorage: payload}, Ty: ety.TyLinkStorageAction}
log := &types.ReceiptLog{Ty: ety.TyLinkStorageLog, Log: types.Encode(stg)}
logs = append(logs, log)
} else {
log := &types.ReceiptLog{Ty: ety.TyLinkStorageLog}
logs = append(logs, log)
kvs = s.GetKVSet(&ety.Storage{Value: &ety.Storage_LinkStorage{LinkStorage: payload}})
}
receipt := &types.Receipt{Ty: types.ExecOk, KV: kvs, Logs: logs}
return receipt, nil
}
//EncryptStorage ...
func (s *StorageAction) EncryptStorage(payload *ety.EncryptNotaryStorage) (*types.Receipt, error) {
var logs []*types.ReceiptLog
var kvs []*types.KeyValue
cfg := s.api.GetConfig()
if cfg.IsDappFork(s.height, ety.StorageX, ety.ForkStorageLocalDB) {
key := payload.Key
if key == "" {
key = common.ToHex(s.txhash)
}
payload.Key = key
_, err := QueryStorageFromLocalDB(s.localdb, key)
if err != types.ErrNotFound {
return nil, ety.ErrKeyExisted
}
stg := &ety.Storage{Value: &ety.Storage_EncryptStorage{EncryptStorage: payload}, Ty: ety.TyEncryptStorageAction}
log := &types.ReceiptLog{Ty: ety.TyEncryptStorageLog, Log: types.Encode(stg)}
logs = append(logs, log)
} else {
log := &types.ReceiptLog{Ty: ety.TyEncryptStorageLog}
logs = append(logs, log)
kvs = s.GetKVSet(&ety.Storage{Value: &ety.Storage_EncryptStorage{EncryptStorage: payload}})
}
receipt := &types.Receipt{Ty: types.ExecOk, KV: kvs, Logs: logs}
return receipt, nil
}
//EncryptShareStorage ...
func (s *StorageAction) EncryptShareStorage(payload *ety.EncryptShareNotaryStorage) (*types.Receipt, error) {
var logs []*types.ReceiptLog
var kvs []*types.KeyValue
cfg := s.api.GetConfig()
if cfg.IsDappFork(s.height, ety.StorageX, ety.ForkStorageLocalDB) {
key := payload.Key
if key == "" {
key = common.ToHex(s.txhash)
}
payload.Key = key
_, err := QueryStorageFromLocalDB(s.localdb, key)
if err != types.ErrNotFound {
return nil, ety.ErrKeyExisted
}
stg := &ety.Storage{Value: &ety.Storage_EncryptShareStorage{EncryptShareStorage: payload}, Ty: ety.TyEncryptStorageAction}
log := &types.ReceiptLog{Ty: ety.TyEncryptShareStorageLog, Log: types.Encode(stg)}
logs = append(logs, log)
} else {
log := &types.ReceiptLog{Ty: ety.TyEncryptShareStorageLog}
logs = append(logs, log)
kvs = s.GetKVSet(&ety.Storage{Value: &ety.Storage_EncryptShareStorage{EncryptShareStorage: payload}})
}
receipt := &types.Receipt{Ty: types.ExecOk, KV: kvs, Logs: logs}
return receipt, nil
}
//EncryptAdd ...
func (s *StorageAction) EncryptAdd(payload *ety.EncryptNotaryAdd) (*types.Receipt, error) {
var logs []*types.ReceiptLog
var kvs []*types.KeyValue
cfg := s.api.GetConfig()
store, err := QueryStorage(s.db, s.localdb, payload.Key)
if err != nil {
return nil, fmt.Errorf("EncryptAdd.QueryStorage. err:%v", err)
}
cipherText := store.GetEncryptStorage().EncryptContent
res, err := paillier.CiphertextAddBytes(cipherText, payload.EncryptAdd)
if err != nil {
return nil, fmt.Errorf("EncryptAdd.CiphertextAddBytes. err:%v", err)
}
store.GetEncryptStorage().EncryptContent = res
newStore := &ety.EncryptNotaryStorage{
ContentHash: store.GetEncryptStorage().ContentHash,
EncryptContent: res,
Nonce: store.GetEncryptStorage().Nonce,
Key: store.GetEncryptStorage().Key,
Value: store.GetEncryptStorage().Value,
}
if cfg.IsDappFork(s.height, ety.StorageX, ety.ForkStorageLocalDB) {
stg := &ety.Storage{Value: &ety.Storage_EncryptStorage{EncryptStorage: newStore}, Ty: ety.TyEncryptStorageAction}
log := &types.ReceiptLog{Ty: ety.TyEncryptAddLog, Log: types.Encode(stg)}
logs = append(logs, log)
} else {
log := &types.ReceiptLog{Ty: ety.TyEncryptAddLog}
logs = append(logs, log)
kvs = append(kvs, &types.KeyValue{Key: Key(payload.Key), Value: types.Encode(newStore)})
}
receipt := &types.Receipt{Ty: types.ExecOk, KV: kvs, Logs: logs}
return receipt, nil
}
//QueryStorageByTxHash ...
func QueryStorageByTxHash(db dbm.KV, txhash string) (*ety.Storage, error) {
data, err := db.Get(Key(txhash))
if err != nil {
elog.Debug("QueryStorage", "get", err)
return nil, err
}
var storage ety.Storage
//decode
err = types.Decode(data, &storage)
if err != nil {
elog.Debug("QueryStorage", "decode", err)
return nil, err
}
return &storage, nil
}
//QueryStorage ...
func QueryStorage(statedb, localdb dbm.KV, txHash string) (*ety.Storage, error) {
if txHash == "" {
return nil, fmt.Errorf("txhash can't equail nil")
}
//先去localdb中查询,如果没有,则再去状态数据库中查询
storage, err := QueryStorageFromLocalDB(localdb, txHash)
if err != nil {
return QueryStorageByTxHash(statedb, txHash)
}
return storage, nil
}
//BatchQueryStorage ...
func BatchQueryStorage(statedb, localdb dbm.KV, in *ety.BatchQueryStorage) (types.Message, error) {
if len(in.TxHashs) > 10 {
return nil, fmt.Errorf("The number of batch queries is too large! the maximux is %d,but current num %d", 10, len(in.TxHashs))
}
var storage ety.BatchReplyStorage
for _, txhash := range in.TxHashs {
msg, err := QueryStorage(statedb, localdb, txhash)
if err != nil {
return msg, err
}
storage.Storages = append(storage.Storages, msg)
}
return &storage, nil
}
//QueryStorageFromLocalDB 因为table表不支持嵌套多种数据存储结构,改成手动KV存储
func QueryStorageFromLocalDB(localdb dbm.KV, key string) (*ety.Storage, error) {
data, err := localdb.Get(getLocalDBKey(key))
if err != nil {
return nil, err
}
var storage ety.Storage
err = types.Decode(data, &storage)
if err != nil {
return nil, err
}
return &storage, nil
}