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accessors_metadata.go
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/
accessors_metadata.go
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// Copyright 2018 The go-ethereum Authors
// This file is part of the go-ethereum library.
//
// The go-ethereum 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 go-ethereum 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.
//
// You should have received a copy of the GNU Lesser General Public License
// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
// 映像,链配置数据,链版本
package rawdb
import (
"github.com/CarLiveChainCo/goiov/common"
"github.com/CarLiveChainCo/goiov/log"
"github.com/CarLiveChainCo/goiov/params"
"github.com/CarLiveChainCo/goiov/rlp"
"encoding/json"
)
// ReadDatabaseVersion retrieves the version number of the database.
func ReadDatabaseVersion(db DatabaseReader) int {
var version int
enc, _ := db.Get(databaseVerisionKey)
rlp.DecodeBytes(enc, &version)
return version
}
// WriteDatabaseVersion stores the version number of the database
func WriteDatabaseVersion(db DatabaseWriter, version int) {
enc, _ := rlp.EncodeToBytes(version)
if err := db.Put(databaseVerisionKey, enc); err != nil {
log.Crit("Failed to store the database version", "err", err)
}
}
// ReadChainConfig retrieves the consensus settings based on the given genesis hash.
//func ReadChainConfig(db DatabaseReader, hash common.Hash, appid ...string) *params.ChainConfig {
// var key = append(configPrefix, hash[:]...)
// if len(appid) == 1 && appid[0] != "" {
// key = append([]byte(appid[0]), key...)
// }
// log.Info("---读链config数据", "appid", appid[0])
// data, _ := db.Get(key)
// if len(data) == 0 {
// return nil
// }
// var config params.ChainConfig
// if err := json.Unmarshal(data, &config); err != nil {
// log.Error("Invalid chain config JSON", "hash", hash, "err", err)
// return nil
// }
// return &config
//}
func ReadChainConfig(db DatabaseReader, hash common.Hash, appid ...string) *params.ChainConfig {
key := ""
if len(appid) == 1 {
key = appid[0]
}
if cMap := ReadAllChainConfig(db); cMap != nil {
if config, ok := cMap[key]; ok {
return config
}
}
return nil
}
func ReadAllChainConfig(db DatabaseReader) map[string]*params.ChainConfig {
var key = configPrefix
var cMap = make(map[string]*params.ChainConfig)
data, _ := db.Get(key)
if len(data) == 0 {
return cMap
}
if err := json.Unmarshal(data, &cMap); err != nil {
log.Error("Invalid chain config JSON", "err", err)
return nil
}
return cMap
}
// WriteChainConfig writes the chain config settings to the database.
//func WriteChainConfig(db DatabaseWriter, hash common.Hash, cfg *params.ChainConfig, appid ...string) {
// if cfg == nil {
// return
// }
// data, err := json.Marshal(cfg)
// if err != nil {
// log.Crit("Failed to JSON encode chain config", "err", err)
// }
// var key = append(configPrefix, hash[:]...)
// if len(appid) == 1 && appid[0] != "" {
// key = append([]byte(appid[0]), key...)
// }
// log.Info("---写链config数据", "appid", appid[0])
// if err := db.Put(key, data); err != nil {
// log.Crit("Failed to store chain config", "err", err)
// }
//}
func WriteChainConfig(db DatabaseWriter, hash common.Hash, cfg map[string]*params.ChainConfig, appid ...string) {
if cfg == nil {
return
}
var key = configPrefix
enc, err := json.Marshal(cfg)
if err != nil {
log.Crit("Failed to JSON encode chain config", "err", err)
}
if err := db.Put(key, enc); err != nil {
log.Crit("Failed to store chain config", "err", err)
}
log.Info("---写链config数据", "appId", appid[0])
}
// ReadPreimage retrieves a single preimage of the provided hash.
func ReadPreimage(db DatabaseReader, hash common.Hash, appid ...string) []byte {
var key = append(preimagePrefix, hash.Bytes()...)
if len(appid) == 1 && appid[0] != "" {
key = append([]byte(appid[0]), key...)
}
data, _ := db.Get(key)
return data
}
// WritePreimages writes the provided set of preimages to the database. `number` is the
// current block number, and is used for debug messages only.
func WritePreimages(db DatabaseWriter, number uint64, preimages map[common.Hash][]byte, appid ...string) {
for hash, preimage := range preimages {
var key = append(preimagePrefix, hash.Bytes()...)
if len(appid) == 1 && appid[0] != "" {
key = append([]byte(appid[0]), key...)
}
if err := db.Put(key, preimage); err != nil {
log.Crit("Failed to store trie preimage", "err", err)
}
}
preimageCounter.Inc(int64(len(preimages)))
preimageHitCounter.Inc(int64(len(preimages)))
}
func WriteAppId(db DatabaseWriter, appId []string) {
enc, _ := rlp.EncodeToBytes(appId)
if err := db.Put(appIdKey, enc); err != nil {
log.Crit("Failed to store the AppId", "err", err)
}
}
func ReadAppId(db DatabaseReader) []string {
var appId []string
enc, _ := db.Get(appIdKey)
rlp.DecodeBytes(enc, &appId)
return appId
}