// NewProtocolManager returns a new expanse sub protocol manager. The Expanse sub protocol manages peers capable
// with the expanse network.
func NewProtocolManager(networkId int, mux *event.TypeMux, txpool txPool, pow pow.PoW, chainman *core.ChainManager) *ProtocolManager {
// Create the protocol manager with the base fields
manager := &ProtocolManager{
eventMux: mux,
txpool: txpool,
chainman: chainman,
peers: newPeerSet(),
newPeerCh: make(chan *peer, 1),
txsyncCh: make(chan *txsync),
quitSync: make(chan struct{}),
netId: networkId,
}
// Initiate a sub-protocol for every implemented version we can handle
manager.SubProtocols = make([]p2p.Protocol, len(ProtocolVersions))
for i := 0; i < len(manager.SubProtocols); i++ {
version := ProtocolVersions[i]
manager.SubProtocols[i] = p2p.Protocol{
Name: "exp",
Version: version,
Length: ProtocolLengths[i],
Run: func(p *p2p.Peer, rw p2p.MsgReadWriter) error {
peer := manager.newPeer(int(version), networkId, p, rw)
manager.newPeerCh <- peer
return manager.handle(peer)
},
}
}
// Construct the different synchronisation mechanisms
manager.downloader = downloader.New(manager.eventMux, manager.chainman.HasBlock, manager.chainman.GetBlock, manager.chainman.CurrentBlock, manager.chainman.InsertChain, manager.removePeer)
validator := func(block *types.Block, parent *types.Block) error {
return core.ValidateHeader(pow, block.Header(), parent, true, false)
}
heighter := func() uint64 {
return manager.chainman.CurrentBlock().NumberU64()
}
manager.fetcher = fetcher.New(manager.chainman.GetBlock, validator, manager.BroadcastBlock, heighter, manager.chainman.InsertChain, manager.removePeer)
return manager
}
func (self *debugApi) ProcessBlock(req *shared.Request) (interface{}, error) {
args := new(BlockNumArg)
if err := self.codec.Decode(req.Params, &args); err != nil {
return nil, shared.NewDecodeParamError(err.Error())
}
block := self.xeth.EthBlockByNumber(args.BlockNumber)
if block == nil {
return nil, fmt.Errorf("block #%d not found", args.BlockNumber)
}
old := vm.Debug
defer func() { vm.Debug = old }()
vm.Debug = true
var (
blockchain = self.expanse.BlockChain()
validator = blockchain.Validator()
processor = blockchain.Processor()
)
err := core.ValidateHeader(blockchain.AuxValidator(), block.Header(), blockchain.GetHeader(block.ParentHash()), true, false)
if err != nil {
return false, err
}
statedb, err := state.New(blockchain.GetBlock(block.ParentHash()).Root(), self.expanse.ChainDb())
if err != nil {
return false, err
}
receipts, _, usedGas, err := processor.Process(block, statedb)
if err != nil {
return false, err
}
err = validator.ValidateState(block, blockchain.GetBlock(block.ParentHash()), statedb, receipts, usedGas)
if err != nil {
return false, err
}
return true, nil
}
func (self *worker) wait() {
for {
for result := range self.recv {
atomic.AddInt32(&self.atWork, -1)
if result == nil {
continue
}
block := result.Block
work := result.Work
work.state.Sync()
if self.fullValidation {
if _, err := self.chain.InsertChain(types.Blocks{block}); err != nil {
glog.V(logger.Error).Infoln("mining err", err)
continue
}
go self.mux.Post(core.NewMinedBlockEvent{block})
} else {
parent := self.chain.GetBlock(block.ParentHash())
if parent == nil {
glog.V(logger.Error).Infoln("Invalid block found during mining")
continue
}
if err := core.ValidateHeader(self.exp.BlockProcessor().Pow, block.Header(), parent, true, false); err != nil && err != core.BlockFutureErr {
glog.V(logger.Error).Infoln("Invalid header on mined block:", err)
continue
}
stat, err := self.chain.WriteBlock(block, false)
if err != nil {
glog.V(logger.Error).Infoln("error writing block to chain", err)
continue
}
// check if canon block and write transactions
if stat == core.CanonStatTy {
// This puts transactions in a extra db for rpc
core.PutTransactions(self.chainDb, block, block.Transactions())
// store the receipts
core.PutReceipts(self.chainDb, work.receipts)
}
// broadcast before waiting for validation
go func(block *types.Block, logs state.Logs, receipts []*types.Receipt) {
self.mux.Post(core.NewMinedBlockEvent{block})
self.mux.Post(core.ChainEvent{block, block.Hash(), logs})
if stat == core.CanonStatTy {
self.mux.Post(core.ChainHeadEvent{block})
self.mux.Post(logs)
}
if err := core.PutBlockReceipts(self.chainDb, block, receipts); err != nil {
glog.V(logger.Warn).Infoln("error writing block receipts:", err)
}
}(block, work.state.Logs(), work.receipts)
}
// check staleness and display confirmation
var stale, confirm string
canonBlock := self.chain.GetBlockByNumber(block.NumberU64())
if canonBlock != nil && canonBlock.Hash() != block.Hash() {
stale = "stale "
} else {
confirm = "Wait 5 blocks for confirmation"
work.localMinedBlocks = newLocalMinedBlock(block.Number().Uint64(), work.localMinedBlocks)
}
glog.V(logger.Info).Infof("🔨 Mined %sblock (#%v / %x). %s", stale, block.Number(), block.Hash().Bytes()[:4], confirm)
self.commitNewWork()
}
}
}
func (self *worker) wait() {
for {
for result := range self.recv {
atomic.AddInt32(&self.atWork, -1)
if result == nil {
continue
}
block := result.Block
work := result.Work
if self.fullValidation {
if _, err := self.chain.InsertChain(types.Blocks{block}); err != nil {
glog.V(logger.Error).Infoln("mining err", err)
continue
}
go self.mux.Post(core.NewMinedBlockEvent{block})
} else {
work.state.Commit()
parent := self.chain.GetBlock(block.ParentHash())
if parent == nil {
glog.V(logger.Error).Infoln("Invalid block found during mining")
continue
}
auxValidator := self.exp.BlockChain().AuxValidator()
if err := core.ValidateHeader(auxValidator, block.Header(), parent.Header(), true, false); err != nil && err != core.BlockFutureErr {
glog.V(logger.Error).Infoln("Invalid header on mined block:", err)
continue
}
stat, err := self.chain.WriteBlock(block)
if err != nil {
glog.V(logger.Error).Infoln("error writing block to chain", err)
continue
}
// update block hash since it is now available and not when the receipt/log of individual transactions were created
for _, r := range work.receipts {
for _, l := range r.Logs {
l.BlockHash = block.Hash()
}
}
for _, log := range work.state.Logs() {
log.BlockHash = block.Hash()
}
// check if canon block and write transactions
if stat == core.CanonStatTy {
// This puts transactions in a extra db for rpc
core.WriteTransactions(self.chainDb, block)
// store the receipts
core.WriteReceipts(self.chainDb, work.receipts)
// Write map map bloom filters
core.WriteMipmapBloom(self.chainDb, block.NumberU64(), work.receipts)
}
// broadcast before waiting for validation
go func(block *types.Block, logs vm.Logs, receipts []*types.Receipt) {
self.mux.Post(core.NewMinedBlockEvent{block})
self.mux.Post(core.ChainEvent{block, block.Hash(), logs})
if stat == core.CanonStatTy {
self.mux.Post(core.ChainHeadEvent{block})
self.mux.Post(logs)
}
if err := core.WriteBlockReceipts(self.chainDb, block.Hash(), receipts); err != nil {
glog.V(logger.Warn).Infoln("error writing block receipts:", err)
}
}(block, work.state.Logs(), work.receipts)
}
// check staleness and display confirmation
var stale, confirm string
canonBlock := self.chain.GetBlockByNumber(block.NumberU64())
if canonBlock != nil && canonBlock.Hash() != block.Hash() {
stale = "stale "
} else {
confirm = "Wait 5 blocks for confirmation"
work.localMinedBlocks = newLocalMinedBlock(block.Number().Uint64(), work.localMinedBlocks)
}
glog.V(logger.Info).Infof("🔨 Mined %sblock (#%v / %x). %s", stale, block.Number(), block.Hash().Bytes()[:4], confirm)
self.commitNewWork()
}
}
}
// NewProtocolManager returns a new ethereum sub protocol manager. The Ethereum sub protocol manages peers capable
// with the ethereum network.
func NewProtocolManager(fastSync bool, networkId int, mux *event.TypeMux, txpool txPool, pow pow.PoW, blockchain *core.BlockChain, chaindb ethdb.Database) (*ProtocolManager, error) {
// Figure out whether to allow fast sync or not
if fastSync && blockchain.CurrentBlock().NumberU64() > 0 {
glog.V(logger.Info).Infof("blockchain not empty, fast sync disabled")
fastSync = false
}
// Create the protocol manager with the base fields
manager := &ProtocolManager{
networkId: networkId,
fastSync: fastSync,
eventMux: mux,
txpool: txpool,
blockchain: blockchain,
chaindb: chaindb,
peers: newPeerSet(),
newPeerCh: make(chan *peer, 1),
txsyncCh: make(chan *txsync),
quitSync: make(chan struct{}),
}
// Initiate a sub-protocol for every implemented version we can handle
manager.SubProtocols = make([]p2p.Protocol, 0, len(ProtocolVersions))
for i, version := range ProtocolVersions {
// Skip protocol version if incompatible with the mode of operation
if fastSync && version < eth63 {
continue
}
// Compatible; initialise the sub-protocol
version := version // Closure for the run
manager.SubProtocols = append(manager.SubProtocols, p2p.Protocol{
Name: ProtocolName,
Version: version,
Length: ProtocolLengths[i],
Run: func(p *p2p.Peer, rw p2p.MsgReadWriter) error {
peer := manager.newPeer(int(version), p, rw)
manager.newPeerCh <- peer
return manager.handle(peer)
},
NodeInfo: func() interface{} {
return manager.NodeInfo()
},
PeerInfo: func(id discover.NodeID) interface{} {
if p := manager.peers.Peer(fmt.Sprintf("%x", id[:8])); p != nil {
return p.Info()
}
return nil
},
})
}
if len(manager.SubProtocols) == 0 {
return nil, errIncompatibleConfig
}
// Construct the different synchronisation mechanisms
manager.downloader = downloader.New(chaindb, manager.eventMux, blockchain.HasHeader, blockchain.HasBlockAndState, blockchain.GetHeader,
blockchain.GetBlock, blockchain.CurrentHeader, blockchain.CurrentBlock, blockchain.CurrentFastBlock, blockchain.FastSyncCommitHead,
blockchain.GetTd, blockchain.InsertHeaderChain, blockchain.InsertChain, blockchain.InsertReceiptChain, blockchain.Rollback,
manager.removePeer)
validator := func(block *types.Block, parent *types.Block) error {
return core.ValidateHeader(pow, block.Header(), parent.Header(), true, false)
}
heighter := func() uint64 {
return blockchain.CurrentBlock().NumberU64()
}
manager.fetcher = fetcher.New(blockchain.GetBlock, validator, manager.BroadcastBlock, heighter, blockchain.InsertChain, manager.removePeer)
return manager, nil
}