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config.go
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config.go
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// Package config
//
// @author: xwc1125
package config
import (
"sync"
"sync/atomic"
"github.com/chain5j/chain5j-pkg/cli"
"github.com/chain5j/chain5j-pkg/types"
"github.com/chain5j/chain5j-protocol/models"
"github.com/chain5j/chain5j-protocol/protocol"
"github.com/chain5j/logger"
"github.com/chain5j/logger/zap"
"github.com/fsnotify/fsnotify"
"github.com/spf13/viper"
)
var (
_ protocol.Config = new(config)
)
var (
// defaultTxSize 默认的最大交易size
defaultTxSize = types.StorageSize(128 * 1024)
)
type config struct {
log logger.Logger // log
configFile string // 本地配置文件
db protocol.DatabaseReader // 数据库
chainConfig *models.ChainConfig // 链配置
localConfig *sync.Pool // 节点本地启动配置,*models.LocalConfig
chainConfigTemp atomic.Value // chainConfig缓存
txSize atomic.Value // txSize的缓存
genesisBlock atomic.Value // 创世块的缓存
}
// NewConfig 加载本地配置文件
func NewConfig(configFile string, opts ...option) (protocol.Config, error) {
c := &config{
log: logger.New("config"),
configFile: configFile,
}
if err := apply(c, opts...); err != nil {
c.log.Error("apply is error", "err", err)
return nil, err
}
var localConfig = new(models.LocalConfig)
// 从config file中加载配置
err := cli.LoadConfig(configFile, "", localConfig, func(e fsnotify.Event) {
c.log.Info("Config file changed", "eventName", e.Name)
if err := cli.LoadConfig(configFile, "", localConfig, nil); err == nil {
c.localConfig.Put(localConfig)
}
})
if err != nil {
c.log.Error("load config err", "config", configFile, "err", err)
return nil, err
}
c.localConfig = &sync.Pool{
New: func() interface{} {
return localConfig
},
}
// 初始化日志
zap.InitWithConfig(&localConfig.Log)
return c, err
}
// SetDatabase 设置数据库
func (c *config) SetDatabase(db protocol.DatabaseReader) error {
c.db = db
chainConfig, err := c.db.ChainConfig()
if err != nil {
return err
}
c.chainConfig = chainConfig
return nil
}
func (c *config) getChainConfig() *models.ChainConfig {
if c.db != nil {
var err error
c.chainConfig, err = c.db.ChainConfig()
if err != nil {
c.log.Error("db getChainConfig err", "err", err)
return nil
}
}
if c.chainConfig.StateApp == nil {
c.chainConfig.StateApp = &models.StateAppConfig{
UseEthereum: false,
}
}
return c.chainConfig
}
// ChainConfig 获取链配置
func (c *config) ChainConfig() models.ChainConfig {
if c.chainConfig == nil {
if c.getChainConfig() == nil {
return models.ChainConfig{}
}
}
// 需要深度copy
chainConfig := c.copyChainConfig()
return chainConfig
}
// copyChainConfig chainConfig 复制
func (c *config) copyChainConfig() models.ChainConfig {
if c.chainConfigTemp.Load() != nil {
return c.chainConfigTemp.Load().(models.ChainConfig)
}
packer := *c.chainConfig.Packer
chainConfig := models.ChainConfig{
GenesisHeight: c.chainConfig.GenesisHeight,
ChainID: c.chainConfig.ChainID,
ChainName: c.chainConfig.ChainName,
VersionName: c.chainConfig.VersionName,
VersionCode: c.chainConfig.VersionCode,
TxSizeLimit: c.chainConfig.TxSizeLimit,
Packer: &packer,
Consensus: c.chainConfig.Consensus,
StateApp: c.chainConfig.StateApp,
}
c.chainConfigTemp.Store(chainConfig)
return chainConfig
}
// GenesisBlock 获取创世块
func (c *config) GenesisBlock() *models.Block {
if c.genesisBlock.Load() != nil {
return c.genesisBlock.Load().(*models.Block)
}
genesisBlock, err := c.db.GetBlockByHeight(c.chainConfig.GenesisHeight)
if err != nil {
c.log.Crit("get genesis block err", "err", err)
}
c.genesisBlock.Store(genesisBlock)
return genesisBlock
}
// TxSizeLimit 获取交易池本地配置
func (c *config) TxSizeLimit() types.StorageSize {
if c.txSize.Load() != nil {
return c.txSize.Load().(types.StorageSize)
}
if c.chainConfig == nil {
c.txSize.Store(defaultTxSize)
return defaultTxSize
}
size := types.StorageSize(c.chainConfig.TxSizeLimit * 1024)
c.txSize.Store(size)
return size
}
func (c *config) DatabaseConfig() models.DatabaseConfig {
return c.localConfig.Get().(*models.LocalConfig).Database
}
func (c *config) BlockchainConfig() models.BlockchainLocalConfig {
return c.LocalConfig().Blockchain
}
func (c *config) LocalConfig() *models.LocalConfig {
return c.localConfig.Get().(*models.LocalConfig)
}
// TxPoolConfig 交易池本地配置
func (c *config) TxPoolConfig() models.TxPoolLocalConfig {
return c.localConfig.Get().(*models.LocalConfig).TxPool
}
// NodeKeyConfig nodeKey本地配置
func (c *config) NodeKeyConfig() models.NodeKeyLocalConfig {
return c.localConfig.Get().(*models.LocalConfig).NodeKey
}
// PackerConfig packer本地配置
func (c *config) PackerConfig() models.PackerLocalConfig {
return c.LocalConfig().Packer
}
// EnablePacker 是否启动打包器
func (c *config) EnablePacker() bool {
return viper.GetBool("mine")
}
func (c *config) BroadcasterConfig() models.BroadcasterLocalConfig {
return c.LocalConfig().Broadcaster
}
func (c *config) P2PConfig() models.P2PConfig {
return c.LocalConfig().P2P
}
func (c *config) ConsensusConfig() models.ConsensusLocalConfig {
return c.LocalConfig().Consensus
}