/
backend.go
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/
backend.go
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// Copyright 2021 The go-aoa Authors
// This file is part of the go-aoa library.
//
// The the go-aoa 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 the go-aoa 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-aoa library. If not, see <http://www.gnu.org/licenses/>.
// Package em implements the eminer-pro protocol.
package aoa
import (
"fmt"
"github.com/Aurorachain-io/go-aoa/accounts"
"github.com/Aurorachain-io/go-aoa/aoa/downloader"
"github.com/Aurorachain-io/go-aoa/aoa/filters"
"github.com/Aurorachain-io/go-aoa/aoa/gasprice"
"github.com/Aurorachain-io/go-aoa/aoadb"
"github.com/Aurorachain-io/go-aoa/common/hexutil"
"github.com/Aurorachain-io/go-aoa/consensus"
"github.com/Aurorachain-io/go-aoa/consensus/dpos"
"github.com/Aurorachain-io/go-aoa/core"
"github.com/Aurorachain-io/go-aoa/core/bloombits"
"github.com/Aurorachain-io/go-aoa/core/types"
"github.com/Aurorachain-io/go-aoa/core/vm"
"github.com/Aurorachain-io/go-aoa/internal/aoaapi"
"github.com/Aurorachain-io/go-aoa/log"
"github.com/Aurorachain-io/go-aoa/node"
"github.com/Aurorachain-io/go-aoa/p2p"
"github.com/Aurorachain-io/go-aoa/params"
"github.com/Aurorachain-io/go-aoa/rlp"
"github.com/Aurorachain-io/go-aoa/rpc"
"math/big"
"runtime"
"sync"
)
type LesServer interface {
Start(srvr *p2p.Server)
Stop()
Protocols() []p2p.Protocol
SetBloomBitsIndexer(bbIndexer *core.ChainIndexer)
}
// eminer-pro implements the eminer-pro full node service.
type Dacchain struct {
config *Config
chainConfig *params.ChainConfig
// Channel for shutting down the service
shutdownChan chan bool // Channel for shutting down the dacchain
stopDbUpgrade func() error // stop chain db sequential key upgrade
// Handlers
txPool *core.TxPool
blockchain *core.BlockChain
protocolManager *ProtocolManager
lesServer LesServer
// DB interfaces
chainDb aoadb.Database // Block chain database
watcherDb aoadb.Database // database for watch internal transactions
dacEngine consensus.Engine
accountManager *accounts.Manager
bloomRequests chan chan *bloombits.Retrieval // Channel receiving bloom data retrieval requests
bloomIndexer *core.ChainIndexer // Bloom indexer operating during block imports
ApiBackend *DacApiBackend
gasPrice *big.Int
networkId uint64
netRPCService *aoaapi.PublicNetAPI
lock sync.RWMutex // Protects the variadic fields (e.g. gas price )
dposTaskManager *DposTaskManager
dposMiner *core.DposMiner
}
func (dacchain *Dacchain) AddLesServer(ls LesServer) {
dacchain.lesServer = ls
ls.SetBloomBitsIndexer(dacchain.bloomIndexer)
}
// New creates a new eminer-pro object (including the
// initialisation of the common eminer-pro object)
func New(ctx *node.ServiceContext, config *Config) (*Dacchain, error) {
if !config.SyncMode.IsValid() {
return nil, fmt.Errorf("invalid sync mode %d", config.SyncMode)
}
chainDb, err := CreateDB(ctx, config, "chaindata")
if err != nil {
return nil, err
}
var watcherDb aoadb.Database
if config.EnableInterTxWatching {
watcherDb, err = CreateDB(ctx, config, "watchdata")
if err != nil {
return nil, err
}
}
stopDbUpgrade := upgradeDeduplicateData(chainDb)
chainConfig, genesisHash, _, genesisErr := core.SetupGenesisBlock(chainDb, config.Genesis)
if _, ok := genesisErr.(*params.ConfigCompatError); genesisErr != nil && !ok {
return nil, genesisErr
}
log.Info("Initialised chain configuration", "config", chainConfig)
dac := &Dacchain{
config: config,
chainDb: chainDb,
chainConfig: chainConfig,
accountManager: ctx.AccountManager,
shutdownChan: make(chan bool),
stopDbUpgrade: stopDbUpgrade,
networkId: config.NetworkId,
gasPrice: config.GasPrice,
bloomRequests: make(chan chan *bloombits.Retrieval),
bloomIndexer: NewBloomIndexer(chainDb, params.BloomBitsBlocks),
dacEngine: CreateDacchainConsensusEngine(),
watcherDb: watcherDb,
}
log.Info("Initialising eminer-pro protocol", "versions", ProtocolVersions, "network", config.NetworkId)
if !config.SkipBcVersionCheck {
bcVersion := core.GetBlockChainVersion(chainDb)
if bcVersion != core.BlockChainVersion && bcVersion != 0 {
return nil, fmt.Errorf("Blockchain DB version mismatch (%d / %d). Run em upgradedb.\n", bcVersion, core.BlockChainVersion)
}
core.WriteBlockChainVersion(chainDb, core.BlockChainVersion)
}
vmConfig := vm.Config{EnablePreimageRecording: config.EnablePreimageRecording, WatchInnerTx: config.EnableInterTxWatching}
dac.blockchain, err = core.NewBlockChain(chainDb, dac.chainConfig, dac.dacEngine, vmConfig, watcherDb)
if err != nil {
return nil, err
}
// Rewind the chain in case of an incompatible config upgrade.
if compat, ok := genesisErr.(*params.ConfigCompatError); ok {
log.Warn("Rewinding chain to upgrade configuration", "err", compat)
dac.blockchain.SetHead(compat.RewindTo)
core.WriteChainConfig(chainDb, genesisHash, chainConfig)
}
dac.bloomIndexer.Start(dac.blockchain)
if config.TxPool.Journal != "" {
config.TxPool.Journal = ctx.ResolvePath(config.TxPool.Journal)
}
dac.txPool = core.NewTxPool(config.TxPool, dac.chainConfig, dac.blockchain)
dac.dposMiner = core.NewDposMiner(dac.chainConfig, dac, dac.dacEngine)
dac.dposTaskManager = NewDposTaskManager(ctx, dac.blockchain, dac.accountManager, dac.dposMiner.GetProduceCallback(), dac.dposMiner.GetShuffleHashChan())
if dac.protocolManager, err = NewProtocolManager(dac.chainConfig, config.SyncMode, config.NetworkId, dac.txPool, dac.dacEngine, dac.blockchain, chainDb, dac.dposTaskManager, dac.dposMiner.GetProduceBlockChan(), dac.dposMiner.AddDelegateWalletCallback, dac.dposMiner.GetDelegateWallets()); err != nil {
return nil, err
}
dac.ApiBackend = &DacApiBackend{dac, nil}
gpoParams := config.GPO
if gpoParams.Default == nil {
gpoParams.Default = config.GasPrice
}
dac.ApiBackend.gpo = gasprice.NewOracle(dac.ApiBackend, gpoParams)
return dac, nil
}
func makeExtraData(extra []byte) []byte {
if len(extra) == 0 {
// create default extradata
extra, _ = rlp.EncodeToBytes([]interface{}{
uint(params.VersionMajor<<16 | params.VersionMinor<<8 | params.VersionPatch),
"aoa",
runtime.Version(),
runtime.GOOS,
})
}
if uint64(len(extra)) > params.MaximumExtraDataSize {
log.Warn("Miner extra data exceed limit", "extra", hexutil.Bytes(extra), "limit", params.MaximumExtraDataSize)
extra = nil
}
return extra
}
// CreateDB creates the chain database.
func CreateDB(ctx *node.ServiceContext, config *Config, name string) (aoadb.Database, error) {
db, err := ctx.OpenDatabase(name, config.DatabaseCache, config.DatabaseHandles)
if err != nil {
return nil, err
}
if db, ok := db.(*aoadb.LDBDatabase); ok {
db.Meter("em/db/chaindata/")
}
return db, nil
}
func CreateDacchainConsensusEngine() consensus.Engine {
return dpos.New()
}
// APIs returns the collection of RPC services the dacchain package offers.
// NOTE, some of these services probably need to be moved to somewhere else.
func (dacchain *Dacchain) APIs() []rpc.API {
apis := aoaapi.GetAPIs(dacchain.ApiBackend)
// Append any APIs exposed explicitly by the consensus engine
apis = append(apis, dacchain.dacEngine.APIs(dacchain.BlockChain())...)
// Append all the local APIs and return
return append(apis, []rpc.API{
{
Namespace: "aoa",
Version: "1.0",
Service: downloader.NewPublicDownloaderAPI(dacchain.protocolManager.downloader),
Public: true,
}, {
Namespace: "aoa",
Version: "1.0",
Service: filters.NewPublicFilterAPI(dacchain.ApiBackend, false),
Public: true,
}, {
Namespace: "admin",
Version: "1.0",
Service: NewPrivateAdminAPI(dacchain),
}, {
Namespace: "debug",
Version: "1.0",
Service: NewPublicDebugAPI(dacchain),
Public: true,
}, {
Namespace: "debug",
Version: "1.0",
Service: NewPrivateDebugAPI(dacchain.chainConfig, dacchain),
}, {
Namespace: "net",
Version: "1.0",
Service: dacchain.netRPCService,
Public: true,
},
}...)
}
func (dacchain *Dacchain) ResetWithGenesisBlock(gb *types.Block) {
dacchain.blockchain.ResetWithGenesisBlock(gb)
}
func (dacchain *Dacchain) AccountManager() *accounts.Manager { return dacchain.accountManager }
func (dacchain *Dacchain) BlockChain() *core.BlockChain { return dacchain.blockchain }
func (dacchain *Dacchain) TxPool() *core.TxPool { return dacchain.txPool }
func (dacchain *Dacchain) Engine() consensus.Engine { return dacchain.dacEngine }
func (dacchain *Dacchain) ChainDb() aoadb.Database { return dacchain.chainDb }
func (dacchain *Dacchain) WatcherDb() aoadb.Database { return dacchain.watcherDb }
func (dacchain *Dacchain) IsListening() bool { return true } // Always listening
func (dacchain *Dacchain) EthVersion() int {
return int(dacchain.protocolManager.SubProtocols[0].Version)
}
func (dacchain *Dacchain) NetVersion() uint64 { return dacchain.networkId }
func (dacchain *Dacchain) Downloader() *downloader.Downloader {
return dacchain.protocolManager.downloader
}
// Protocols implements node.Service, returning all the currently configured
// network protocols to start.
func (dacchain *Dacchain) Protocols() []p2p.Protocol {
if dacchain.lesServer == nil {
return dacchain.protocolManager.SubProtocols
}
return append(dacchain.protocolManager.SubProtocols, dacchain.lesServer.Protocols()...)
}
// Start implements node.Service, starting all internal goroutines needed by the
// eminer-pro protocol implementation.
func (dacchain *Dacchain) Start(srvr *p2p.Server) error {
// Start the bloom bits servicing goroutines
dacchain.startBloomHandlers()
// Start the RPC service
dacchain.netRPCService = aoaapi.NewPublicNetAPI(srvr, dacchain.NetVersion())
// Figure out a max peers count based on the server limits
maxPeers := srvr.MaxPeers
if dacchain.config.LightServ > 0 {
maxPeers -= dacchain.config.LightPeers
if maxPeers < srvr.MaxPeers/2 {
maxPeers = srvr.MaxPeers / 2
}
}
// Start the networking layer and the light server if requested
dacchain.protocolManager.Start(maxPeers)
if dacchain.lesServer != nil {
dacchain.lesServer.Start(srvr)
}
return nil
}
// Stop implements node.Service, terminating all internal goroutines used by the
// eminer-pro protocol.
func (dacchain *Dacchain) Stop() error {
if dacchain.stopDbUpgrade != nil {
dacchain.stopDbUpgrade()
}
dacchain.bloomIndexer.Close()
dacchain.blockchain.Stop()
dacchain.protocolManager.Stop()
if dacchain.lesServer != nil {
dacchain.lesServer.Stop()
}
dacchain.txPool.Stop()
dacchain.chainDb.Close()
if dacchain.watcherDb != nil {
dacchain.watcherDb.Close()
}
close(dacchain.shutdownChan)
return nil
}