forked from seeleteam/go-seele
/
seeleservice.go
328 lines (266 loc) · 9.15 KB
/
seeleservice.go
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/**
* @file
* @copyright defined in go-seele/LICENSE
*/
package seele
import (
"context"
"fmt"
"path/filepath"
"github.com/seeleteam/go-seele/api"
"github.com/seeleteam/go-seele/common"
"github.com/seeleteam/go-seele/consensus"
"github.com/seeleteam/go-seele/core"
"github.com/seeleteam/go-seele/core/store"
"github.com/seeleteam/go-seele/core/types"
"github.com/seeleteam/go-seele/database"
"github.com/seeleteam/go-seele/database/leveldb"
"github.com/seeleteam/go-seele/event"
"github.com/seeleteam/go-seele/log"
"github.com/seeleteam/go-seele/miner"
"github.com/seeleteam/go-seele/node"
"github.com/seeleteam/go-seele/p2p"
"github.com/seeleteam/go-seele/rpc"
downloader "github.com/seeleteam/go-seele/seele/download"
)
const chainHeaderChangeBuffSize = 100
const maxProgatePeerPerShard = 7
// SeeleService implements full node service.
type SeeleService struct {
networkID string
netVersion string
p2pServer *p2p.Server
seeleProtocol *SeeleProtocol
log *log.SeeleLog
txPool *core.TransactionPool
debtPool *core.DebtPool
chain *core.Blockchain
chainDB database.Database // database used to store blocks.
chainDBPath string
accountStateDB database.Database // database used to store account state info.
accountStateDBPath string
debtManagerDB database.Database // database used to store debts in debt manager.
debtManagerDBPath string
miner *miner.Miner
lastHeader common.Hash
chainHeaderChangeChannel chan common.Hash
debtVerifier types.DebtVerifier
}
// ServiceContext is a collection of service configuration inherited from node
type ServiceContext struct {
DataDir string
}
// AccountStateDB return account state db
func (s *SeeleService) AccountStateDB() database.Database { return s.accountStateDB }
// BlockChain get blockchain
func (s *SeeleService) BlockChain() *core.Blockchain { return s.chain }
// TxPool tx pool
func (s *SeeleService) TxPool() *core.TransactionPool { return s.txPool }
// DebtPool debt pool
func (s *SeeleService) DebtPool() *core.DebtPool { return s.debtPool }
// NetVersion net version
func (s *SeeleService) NetVersion() string { return s.netVersion }
// NetWorkID net id
func (s *SeeleService) NetWorkID() string { return s.networkID }
// Miner get miner
func (s *SeeleService) Miner() *miner.Miner { return s.miner }
// Downloader get downloader
func (s *SeeleService) Downloader() *downloader.Downloader {
return s.seeleProtocol.Downloader()
}
// P2PServer get p2pServer
func (s *SeeleService) P2PServer() *p2p.Server { return s.p2pServer }
// NewSeeleService create SeeleService
func NewSeeleService(ctx context.Context, conf *node.Config, log *log.SeeleLog, engine consensus.Engine, verifier types.DebtVerifier, startHeight int) (s *SeeleService, err error) {
s = &SeeleService{
log: log,
networkID: conf.P2PConfig.NetworkID,
netVersion: conf.BasicConfig.Version,
debtVerifier: verifier,
}
serviceContext := ctx.Value("ServiceContext").(ServiceContext)
// Initialize blockchain DB.
if err = s.initBlockchainDB(&serviceContext); err != nil {
return nil, err
}
leveldb.StartMetrics(s.chainDB, "chaindb", log)
// Initialize account state info DB.
if err = s.initAccountStateDB(&serviceContext); err != nil {
return nil, err
}
// Initialize debt manager DB.
if err = s.initDebtManagerDB(&serviceContext); err != nil {
return nil, err
}
s.miner = miner.NewMiner(conf.SeeleConfig.Coinbase, s, s.debtVerifier, engine)
// initialize and validate genesis
if err = s.initGenesisAndChain(&serviceContext, conf, startHeight); err != nil {
return nil, err
}
if err = s.initPool(conf); err != nil {
return nil, err
}
if s.seeleProtocol, err = NewSeeleProtocol(s, log); err != nil {
s.Stop()
log.Error("failed to create seeleProtocol in NewSeeleService, %s", err)
return nil, err
}
return s, nil
}
func (s *SeeleService) initBlockchainDB(serviceContext *ServiceContext) (err error) {
s.chainDBPath = filepath.Join(serviceContext.DataDir, BlockChainDir)
s.log.Info("NewSeeleService BlockChain datadir is %s", s.chainDBPath)
if s.chainDB, err = leveldb.NewLevelDB(s.chainDBPath); err != nil {
s.log.Error("NewSeeleService Create BlockChain err. %s", err)
return err
}
return nil
}
func (s *SeeleService) initAccountStateDB(serviceContext *ServiceContext) (err error) {
s.accountStateDBPath = filepath.Join(serviceContext.DataDir, AccountStateDir)
s.log.Info("NewSeeleService account state datadir is %s", s.accountStateDBPath)
if s.accountStateDB, err = leveldb.NewLevelDB(s.accountStateDBPath); err != nil {
s.Stop()
s.log.Error("NewSeeleService Create BlockChain err: failed to create account state DB, %s", err)
return err
}
return nil
}
func (s *SeeleService) initDebtManagerDB(serviceContext *ServiceContext) (err error) {
s.debtManagerDBPath = filepath.Join(serviceContext.DataDir, DebtManagerDir)
s.log.Info("NewSeeleService debt manager datadir is %s", s.debtManagerDBPath)
if s.debtManagerDB, err = leveldb.NewLevelDB(s.debtManagerDBPath); err != nil {
s.Stop()
s.log.Error("NewSeeleService Create BlockChain err: failed to create debt manager DB, %s", err)
return err
}
return nil
}
func (s *SeeleService) initGenesisAndChain(serviceContext *ServiceContext, conf *node.Config, startHeight int) (err error) {
bcStore := store.NewCachedStore(store.NewBlockchainDatabase(s.chainDB))
genesis := core.GetGenesis(&conf.SeeleConfig.GenesisConfig)
if err = genesis.InitializeAndValidate(bcStore, s.accountStateDB); err != nil {
s.Stop()
s.log.Error("NewSeeleService genesis.Initialize err. %s", err)
return err
}
recoveryPointFile := filepath.Join(serviceContext.DataDir, BlockChainRecoveryPointFile)
if s.chain, err = core.NewBlockchain(bcStore, s.accountStateDB, recoveryPointFile, s.miner.GetEngine(), s.debtVerifier, startHeight); err != nil {
s.Stop()
s.log.Error("failed to init chain in NewSeeleService. %s", err)
return err
}
return nil
}
func (s *SeeleService) initPool(conf *node.Config) (err error) {
if s.lastHeader, err = s.chain.GetStore().GetHeadBlockHash(); err != nil {
s.Stop()
return fmt.Errorf("failed to get chain header, %s", err)
}
s.chainHeaderChangeChannel = make(chan common.Hash, chainHeaderChangeBuffSize)
s.debtPool = core.NewDebtPool(s.chain, s.debtVerifier)
s.txPool = core.NewTransactionPool(conf.SeeleConfig.TxConf, s.chain)
event.ChainHeaderChangedEventMananger.AddAsyncListener(s.chainHeaderChanged)
go s.MonitorChainHeaderChange()
return nil
}
// chainHeaderChanged handle chain header changed event.
// add forked transaction back
// deleted invalid transaction
func (s *SeeleService) chainHeaderChanged(e event.Event) {
newBlock := e.(*types.Block)
if newBlock == nil || newBlock.HeaderHash.IsEmpty() {
return
}
s.chainHeaderChangeChannel <- newBlock.HeaderHash
}
// MonitorChainHeaderChange monitor and handle chain header event
func (s *SeeleService) MonitorChainHeaderChange() {
for {
select {
case newHeader := <-s.chainHeaderChangeChannel:
if s.lastHeader.IsEmpty() {
s.lastHeader = newHeader
return
}
s.txPool.HandleChainHeaderChanged(newHeader, s.lastHeader)
s.debtPool.HandleChainHeaderChanged(newHeader, s.lastHeader)
s.lastHeader = newHeader
}
}
}
// Protocols implements node.Service, returning all the currently configured
// network protocols to start.
func (s *SeeleService) Protocols() (protos []p2p.Protocol) {
protos = append(protos, s.seeleProtocol.Protocol)
return protos
}
// Start implements node.Service, starting goroutines needed by SeeleService.
func (s *SeeleService) Start(srvr *p2p.Server) error {
s.p2pServer = srvr
s.seeleProtocol.Start()
return nil
}
// Stop implements node.Service, terminating all internal goroutines.
func (s *SeeleService) Stop() error {
//TODO
// s.txPool.Stop() s.chain.Stop()
// retries? leave it to future
if s.seeleProtocol != nil {
s.seeleProtocol.Stop()
s.seeleProtocol = nil
}
if s.chainDB != nil {
s.chainDB.Close()
s.chainDB = nil
}
if s.accountStateDB != nil {
s.accountStateDB.Close()
s.accountStateDB = nil
}
if s.debtManagerDB != nil {
s.debtManagerDB.Close()
s.debtManagerDB = nil
}
return nil
}
// APIs implements node.Service, returning the collection of RPC services the seele package offers.
// must to make sure that the order of the download api is 5; we get the download api by 5
func (s *SeeleService) APIs() (apis []rpc.API) {
apis = append(apis, api.GetAPIs(NewSeeleBackend(s))...)
apis = append(apis, []rpc.API{
{
Namespace: "seele",
Version: "1.0",
Service: NewPublicSeeleAPI(s),
Public: true,
},
{
Namespace: "download",
Version: "1.0",
Service: downloader.NewPrivatedownloaderAPI(s.seeleProtocol.downloader),
Public: true,
},
{
Namespace: "debug",
Version: "1.0",
Service: NewPrivateDebugAPI(s),
Public: false,
},
{
Namespace: "miner",
Version: "1.0",
Service: NewPrivateMinerAPI(s),
Public: false,
},
{
Namespace: "txpool",
Version: "1.0",
Service: NewTransactionPoolAPI(s),
Public: true,
},
}...)
minerApis := s.miner.GetEngine().APIs(s.chain)
apis = append(apis, minerApis...)
return apis
}