You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
810 lines
29 KiB
810 lines
29 KiB
package node
|
|
|
|
import (
|
|
"bytes"
|
|
"crypto/ecdsa"
|
|
"encoding/binary"
|
|
"fmt"
|
|
"math/big"
|
|
"os"
|
|
"strconv"
|
|
"strings"
|
|
"sync"
|
|
"time"
|
|
|
|
"github.com/harmony-one/harmony/drand"
|
|
|
|
"github.com/ethereum/go-ethereum/common"
|
|
"github.com/ethereum/go-ethereum/common/hexutil"
|
|
"github.com/ethereum/go-ethereum/crypto"
|
|
"github.com/ethereum/go-ethereum/ethdb"
|
|
"github.com/ethereum/go-ethereum/params"
|
|
"github.com/ethereum/go-ethereum/rlp"
|
|
"github.com/harmony-one/harmony/api/client"
|
|
clientService "github.com/harmony-one/harmony/api/client/service"
|
|
proto_discovery "github.com/harmony-one/harmony/api/proto/discovery"
|
|
proto_node "github.com/harmony-one/harmony/api/proto/node"
|
|
service_manager "github.com/harmony-one/harmony/api/service"
|
|
blockproposal "github.com/harmony-one/harmony/api/service/blockproposal"
|
|
"github.com/harmony-one/harmony/api/service/clientsupport"
|
|
consensus_service "github.com/harmony-one/harmony/api/service/consensus"
|
|
"github.com/harmony-one/harmony/api/service/discovery"
|
|
"github.com/harmony-one/harmony/api/service/explorer"
|
|
"github.com/harmony-one/harmony/api/service/networkinfo"
|
|
randomness_service "github.com/harmony-one/harmony/api/service/randomness"
|
|
|
|
"github.com/harmony-one/harmony/api/service/staking"
|
|
"github.com/harmony-one/harmony/api/service/syncing"
|
|
"github.com/harmony-one/harmony/api/service/syncing/downloader"
|
|
downloader_pb "github.com/harmony-one/harmony/api/service/syncing/downloader/proto"
|
|
bft "github.com/harmony-one/harmony/consensus"
|
|
"github.com/harmony-one/harmony/core"
|
|
"github.com/harmony-one/harmony/core/types"
|
|
"github.com/harmony-one/harmony/core/vm"
|
|
"github.com/harmony-one/harmony/crypto/pki"
|
|
"github.com/harmony-one/harmony/internal/utils"
|
|
"github.com/harmony-one/harmony/node/worker"
|
|
"github.com/harmony-one/harmony/p2p"
|
|
)
|
|
|
|
// State is a state of a node.
|
|
type State byte
|
|
|
|
// All constants except the NodeLeader below are for validators only.
|
|
const (
|
|
NodeInit State = iota // Node just started, before contacting BeaconChain
|
|
NodeWaitToJoin // Node contacted BeaconChain, wait to join Shard
|
|
NodeNotInSync // Node out of sync, might be just joined Shard or offline for a period of time
|
|
NodeOffline // Node is offline
|
|
NodeReadyForConsensus // Node is ready for doing consensus
|
|
NodeDoingConsensus // Node is already doing consensus
|
|
NodeLeader // Node is the leader of some shard.
|
|
)
|
|
|
|
// Role defines a role of a node.
|
|
type Role byte
|
|
|
|
// All constants for different node roles.
|
|
const (
|
|
Unknown Role = iota
|
|
ShardLeader
|
|
ShardValidator
|
|
BeaconLeader
|
|
BeaconValidator
|
|
NewNode
|
|
)
|
|
|
|
func (state State) String() string {
|
|
switch state {
|
|
case NodeInit:
|
|
return "NodeInit"
|
|
case NodeWaitToJoin:
|
|
return "NodeWaitToJoin"
|
|
case NodeNotInSync:
|
|
return "NodeNotInSync"
|
|
case NodeOffline:
|
|
return "NodeOffline"
|
|
case NodeReadyForConsensus:
|
|
return "NodeReadyForConsensus"
|
|
case NodeDoingConsensus:
|
|
return "NodeDoingConsensus"
|
|
case NodeLeader:
|
|
return "NodeLeader"
|
|
}
|
|
return "Unknown"
|
|
}
|
|
|
|
// Constants related to doing syncing.
|
|
const (
|
|
lastMileThreshold = 4
|
|
inSyncThreshold = 1
|
|
)
|
|
|
|
// TotalInitFund is the initial total fund to the faucet.
|
|
const TotalInitFund = 9000000
|
|
|
|
const (
|
|
waitBeforeJoinShard = time.Second * 3
|
|
timeOutToJoinShard = time.Minute * 10
|
|
// ClientServicePortDiff is the positive port diff for client service
|
|
ClientServicePortDiff = 5555
|
|
maxBroadcastNodes = 10 // broadcast at most maxBroadcastNodes peers that need in sync
|
|
broadcastTimeout int64 = 3 * 60 * 1000000000 // 3 mins
|
|
)
|
|
|
|
// use to push new block to outofsync node
|
|
type syncConfig struct {
|
|
timestamp int64
|
|
client *downloader.Client
|
|
}
|
|
|
|
//constants related to staking
|
|
//The first four bytes of the call data for a function call specifies the function to be called.
|
|
//It is the first (left, high-order in big-endian) four bytes of the Keccak-256 (SHA-3)
|
|
//Refer: https://solidity.readthedocs.io/en/develop/abi-spec.html
|
|
|
|
const (
|
|
depositFuncSignature = "0xd0e30db0"
|
|
withdrawFuncSignature = "0x2e1a7d4d"
|
|
funcSingatureBytes = 4
|
|
)
|
|
|
|
// Node represents a protocol-participating node in the network
|
|
type Node struct {
|
|
Consensus *bft.Consensus // Consensus object containing all Consensus related data (e.g. committee members, signatures, commits)
|
|
BlockChannel chan *types.Block // The channel to send newly proposed blocks
|
|
ConfirmedBlockChannel chan *types.Block // The channel to send confirmed blocks
|
|
pendingTransactions types.Transactions // All the transactions received but not yet processed for Consensus
|
|
transactionInConsensus []*types.Transaction // The transactions selected into the new block and under Consensus process
|
|
pendingTxMutex sync.Mutex
|
|
DRand *drand.DRand // The instance for distributed randomness protocol
|
|
|
|
blockchain *core.BlockChain // The blockchain for the shard where this node belongs
|
|
db *ethdb.LDBDatabase // LevelDB to store blockchain.
|
|
|
|
ClientPeer *p2p.Peer // The peer for the harmony tx generator client, used for leaders to return proof-of-accept
|
|
Client *client.Client // The presence of a client object means this node will also act as a client
|
|
SelfPeer p2p.Peer // TODO(minhdoan): it could be duplicated with Self below whose is Alok work.
|
|
BCPeers []p2p.Peer // list of Beacon Chain Peers. This is needed by all nodes.
|
|
|
|
// TODO: Neighbors should store only neighbor nodes in the same shard
|
|
Neighbors sync.Map // All the neighbor nodes, key is the sha256 of Peer IP/Port, value is the p2p.Peer
|
|
State State // State of the Node
|
|
stateMutex sync.Mutex // mutex for change node state
|
|
|
|
TxPool *core.TxPool
|
|
Worker *worker.Worker
|
|
|
|
// Client server (for wallet requests)
|
|
clientServer *clientService.Server
|
|
|
|
// Syncing component.
|
|
downloaderServer *downloader.Server
|
|
stateSync *syncing.StateSync
|
|
peerRegistrationRecord map[uint32]*syncConfig // record registration time (unixtime) of peers begin in syncing
|
|
|
|
// The p2p host used to send/receive p2p messages
|
|
host p2p.Host
|
|
|
|
// Channel to stop sending ping message
|
|
StopPing chan struct{}
|
|
|
|
// Signal channel for lost validators
|
|
OfflinePeers chan p2p.Peer
|
|
|
|
// Node Role.
|
|
Role Role
|
|
|
|
// Service manager.
|
|
serviceManager *service_manager.Manager
|
|
|
|
//Staked Accounts and Contract
|
|
CurrentStakes map[common.Address]int64 //This will save the latest information about staked nodes.
|
|
StakingContractAddress common.Address
|
|
WithdrawStakeFunc []byte
|
|
|
|
//Node Account
|
|
AccountKey *ecdsa.PrivateKey
|
|
Address common.Address
|
|
|
|
// For test only
|
|
TestBankKeys []*ecdsa.PrivateKey
|
|
ContractKeys []*ecdsa.PrivateKey
|
|
ContractAddresses []common.Address
|
|
|
|
// Group Message Receiver
|
|
groupReceiver p2p.GroupReceiver
|
|
|
|
// Duplicated Ping Message Received
|
|
duplicatedPing map[string]bool
|
|
}
|
|
|
|
// Blockchain returns the blockchain from node
|
|
func (node *Node) Blockchain() *core.BlockChain {
|
|
return node.blockchain
|
|
}
|
|
|
|
// Add new transactions to the pending transaction list
|
|
func (node *Node) addPendingTransactions(newTxs types.Transactions) {
|
|
node.pendingTxMutex.Lock()
|
|
node.pendingTransactions = append(node.pendingTransactions, newTxs...)
|
|
node.pendingTxMutex.Unlock()
|
|
utils.GetLogInstance().Debug("Got more transactions", "num", len(newTxs), "totalPending", len(node.pendingTransactions))
|
|
}
|
|
|
|
// Take out a subset of valid transactions from the pending transaction list
|
|
// Note the pending transaction list will then contain the rest of the txs
|
|
func (node *Node) getTransactionsForNewBlock(maxNumTxs int) types.Transactions {
|
|
node.pendingTxMutex.Lock()
|
|
selected, unselected, invalid := node.Worker.SelectTransactionsForNewBlock(node.pendingTransactions, maxNumTxs)
|
|
_ = invalid // invalid txs are discard
|
|
|
|
utils.GetLogInstance().Debug("Invalid transactions discarded", "number", len(invalid))
|
|
node.pendingTransactions = unselected
|
|
utils.GetLogInstance().Debug("Remaining pending transactions", "number", len(node.pendingTransactions))
|
|
node.pendingTxMutex.Unlock()
|
|
return selected
|
|
}
|
|
|
|
// StartServer starts a server and process the requests by a handler.
|
|
func (node *Node) StartServer() {
|
|
if utils.UseLibP2P {
|
|
select {}
|
|
} else {
|
|
node.host.BindHandlerAndServe(node.StreamHandler)
|
|
}
|
|
}
|
|
|
|
// Count the total number of transactions in the blockchain
|
|
// Currently used for stats reporting purpose
|
|
func (node *Node) countNumTransactionsInBlockchain() int {
|
|
count := 0
|
|
for block := node.blockchain.CurrentBlock(); block != nil; block = node.blockchain.GetBlockByHash(block.Header().ParentHash) {
|
|
count += len(block.Transactions())
|
|
}
|
|
return count
|
|
}
|
|
|
|
// New creates a new node.
|
|
func New(host p2p.Host, consensus *bft.Consensus, db ethdb.Database) *Node {
|
|
node := Node{}
|
|
|
|
if host != nil {
|
|
node.host = host
|
|
node.SelfPeer = host.GetSelfPeer()
|
|
}
|
|
|
|
if host != nil && consensus != nil {
|
|
// Consensus and associated channel to communicate blocks
|
|
node.Consensus = consensus
|
|
|
|
// Initialize genesis block and blockchain
|
|
genesisAlloc := node.CreateGenesisAllocWithTestingAddresses(100)
|
|
contractKey, _ := ecdsa.GenerateKey(crypto.S256(), strings.NewReader("Test contract key string stream that is fixed so that generated test key are deterministic every time"))
|
|
contractAddress := crypto.PubkeyToAddress(contractKey.PublicKey)
|
|
contractFunds := big.NewInt(TotalInitFund)
|
|
contractFunds = contractFunds.Mul(contractFunds, big.NewInt(params.Ether))
|
|
genesisAlloc[contractAddress] = core.GenesisAccount{Balance: contractFunds}
|
|
node.ContractKeys = append(node.ContractKeys, contractKey)
|
|
|
|
database := db
|
|
if database == nil {
|
|
database = ethdb.NewMemDatabase()
|
|
}
|
|
|
|
chainConfig := params.TestChainConfig
|
|
chainConfig.ChainID = big.NewInt(int64(node.Consensus.ShardID)) // Use ChainID as piggybacked ShardID
|
|
gspec := core.Genesis{
|
|
Config: chainConfig,
|
|
Alloc: genesisAlloc,
|
|
ShardID: uint32(node.Consensus.ShardID),
|
|
}
|
|
|
|
_ = gspec.MustCommit(database)
|
|
chain, _ := core.NewBlockChain(database, nil, gspec.Config, node.Consensus, vm.Config{}, nil)
|
|
node.blockchain = chain
|
|
node.BlockChannel = make(chan *types.Block)
|
|
node.ConfirmedBlockChannel = make(chan *types.Block)
|
|
|
|
node.TxPool = core.NewTxPool(core.DefaultTxPoolConfig, params.TestChainConfig, chain)
|
|
node.Worker = worker.New(params.TestChainConfig, chain, node.Consensus, pki.GetAddressFromPublicKey(node.SelfPeer.PubKey), node.Consensus.ShardID)
|
|
node.AddFaucetContractToPendingTransactions()
|
|
if node.Role == BeaconLeader {
|
|
node.AddStakingContractToPendingTransactions() //This will save the latest information about staked nodes in current staked
|
|
node.DepositToFakeAccounts()
|
|
}
|
|
if node.Role == BeaconLeader || node.Role == BeaconValidator {
|
|
node.CurrentStakes = make(map[common.Address]int64)
|
|
}
|
|
node.Consensus.ConsensusBlock = make(chan *bft.BFTBlockInfo)
|
|
node.Consensus.VerifiedNewBlock = make(chan *types.Block)
|
|
}
|
|
|
|
if consensus != nil && consensus.IsLeader {
|
|
node.State = NodeLeader
|
|
} else {
|
|
node.State = NodeInit
|
|
}
|
|
|
|
// Setup initial state of syncing.
|
|
node.StopPing = make(chan struct{})
|
|
node.peerRegistrationRecord = make(map[uint32]*syncConfig)
|
|
|
|
node.OfflinePeers = make(chan p2p.Peer)
|
|
go node.RemovePeersHandler()
|
|
|
|
// start the goroutine to receive group message
|
|
go node.ReceiveGroupMessage()
|
|
|
|
node.duplicatedPing = make(map[string]bool)
|
|
|
|
return &node
|
|
}
|
|
|
|
func (node *Node) getDeployedStakingContract() common.Address {
|
|
return node.StakingContractAddress
|
|
}
|
|
|
|
//In order to get the deployed contract address of a contract, we need to find the nonce of the address that created it.
|
|
//(Refer: https://solidity.readthedocs.io/en/v0.5.3/introduction-to-smart-contracts.html#index-8)
|
|
// Then we can (re)create the deployed address. Trivially, this is 0 for us.
|
|
// The deployed contract address can also be obtained via the receipt of the contract creating transaction.
|
|
func (node *Node) generateDeployedStakingContractAddress(mycontracttx *types.Transaction, contractAddress common.Address) common.Address {
|
|
//Ideally we send the transaction to
|
|
|
|
//Correct Way 1:
|
|
//node.SendTx(mycontracttx)
|
|
//receipts := node.worker.GetCurrentReceipts()
|
|
//deployedcontractaddress = recepits[len(receipts)-1].ContractAddress //get the address from the receipt
|
|
|
|
//Correct Way 2:
|
|
//nonce := GetNonce(contractAddress)
|
|
//deployedAddress := crypto.CreateAddress(contractAddress, uint64(nonce))
|
|
//deployedcontractaddress = recepits[len(receipts)-1].ContractAddress //get the address from the receipt
|
|
nonce := 0
|
|
return crypto.CreateAddress(contractAddress, uint64(nonce))
|
|
}
|
|
|
|
// IsOutOfSync checks whether the node is out of sync by comparing latest block with consensus block
|
|
func (node *Node) IsOutOfSync(consensusBlockInfo *bft.BFTBlockInfo) bool {
|
|
consensusBlock := consensusBlockInfo.Block
|
|
consensusID := consensusBlockInfo.ConsensusID
|
|
|
|
myHeight := node.blockchain.CurrentBlock().NumberU64()
|
|
newHeight := consensusBlock.NumberU64()
|
|
utils.GetLogInstance().Debug("[SYNC]", "myHeight", myHeight, "newHeight", newHeight)
|
|
if newHeight-myHeight <= inSyncThreshold {
|
|
node.stateSync.AddLastMileBlock(consensusBlock)
|
|
node.Consensus.UpdateConsensusID(consensusID + 1)
|
|
return false
|
|
}
|
|
// cache latest blocks for last mile catch up
|
|
if newHeight-myHeight <= lastMileThreshold && node.stateSync != nil {
|
|
node.stateSync.AddLastMileBlock(consensusBlock)
|
|
}
|
|
return true
|
|
}
|
|
|
|
// DoSyncing wait for check status and starts syncing if out of sync
|
|
func (node *Node) DoSyncing() {
|
|
for {
|
|
select {
|
|
// in current implementation logic, timeout means in sync
|
|
case <-time.After(5 * time.Second):
|
|
//myHeight := node.blockchain.CurrentBlock().NumberU64()
|
|
//utils.GetLogInstance().Debug("[SYNC]", "currentHeight", myHeight)
|
|
node.stateMutex.Lock()
|
|
node.State = NodeReadyForConsensus
|
|
node.stateMutex.Unlock()
|
|
continue
|
|
case consensusBlockInfo := <-node.Consensus.ConsensusBlock:
|
|
if !node.IsOutOfSync(consensusBlockInfo) {
|
|
startHash := node.blockchain.CurrentBlock().Hash()
|
|
node.stateSync.StartStateSync(startHash[:], node.blockchain, node.Worker)
|
|
if node.State == NodeNotInSync {
|
|
utils.GetLogInstance().Info("[SYNC] Node is now IN SYNC!")
|
|
}
|
|
node.stateMutex.Lock()
|
|
node.State = NodeReadyForConsensus
|
|
node.stateMutex.Unlock()
|
|
node.stateSync.CloseConnections()
|
|
node.stateSync = nil
|
|
continue
|
|
} else {
|
|
utils.GetLogInstance().Debug("[SYNC] node is out of sync")
|
|
node.stateMutex.Lock()
|
|
node.State = NodeNotInSync
|
|
node.stateMutex.Unlock()
|
|
}
|
|
|
|
if node.stateSync == nil {
|
|
node.stateSync = syncing.CreateStateSync(node.SelfPeer.IP, node.SelfPeer.Port)
|
|
node.stateSync.CreateSyncConfig(node.GetSyncingPeers())
|
|
node.stateSync.MakeConnectionToPeers()
|
|
}
|
|
startHash := node.blockchain.CurrentBlock().Hash()
|
|
node.stateSync.StartStateSync(startHash[:], node.blockchain, node.Worker)
|
|
}
|
|
}
|
|
}
|
|
|
|
// AddPeers adds neighbors nodes
|
|
func (node *Node) AddPeers(peers []*p2p.Peer) int {
|
|
count := 0
|
|
for _, p := range peers {
|
|
key := fmt.Sprintf("%v", p.PubKey)
|
|
_, ok := node.Neighbors.Load(key)
|
|
if !ok {
|
|
node.Neighbors.Store(key, *p)
|
|
count++
|
|
node.host.AddPeer(p)
|
|
continue
|
|
}
|
|
if node.SelfPeer.ValidatorID == -1 && p.IP == node.SelfPeer.IP && p.Port == node.SelfPeer.Port {
|
|
node.SelfPeer.ValidatorID = p.ValidatorID
|
|
}
|
|
}
|
|
|
|
if count > 0 {
|
|
node.Consensus.AddPeers(peers)
|
|
// TODO: make peers into a context object shared by consensus and drand
|
|
node.DRand.AddPeers(peers)
|
|
}
|
|
return count
|
|
}
|
|
|
|
// GetSyncingPort returns the syncing port.
|
|
func GetSyncingPort(nodePort string) string {
|
|
if port, err := strconv.Atoi(nodePort); err == nil {
|
|
return fmt.Sprintf("%d", port-syncing.SyncingPortDifference)
|
|
}
|
|
os.Exit(1)
|
|
return ""
|
|
}
|
|
|
|
// GetSyncingPeers returns list of peers.
|
|
func (node *Node) GetSyncingPeers() []p2p.Peer {
|
|
res := []p2p.Peer{}
|
|
node.Neighbors.Range(func(k, v interface{}) bool {
|
|
res = append(res, v.(p2p.Peer))
|
|
return true
|
|
})
|
|
|
|
removeID := -1
|
|
for i := range res {
|
|
if res[i].Port == node.SelfPeer.Port {
|
|
removeID = i
|
|
}
|
|
res[i].Port = GetSyncingPort(res[i].Port)
|
|
}
|
|
if removeID != -1 {
|
|
res = append(res[:removeID], res[removeID+1:]...)
|
|
}
|
|
utils.GetLogInstance().Debug("GetSyncingPeers: ", "res", res, "self", node.SelfPeer)
|
|
return res
|
|
}
|
|
|
|
// JoinShard helps a new node to join a shard.
|
|
func (node *Node) JoinShard(leader p2p.Peer) {
|
|
// try to join the shard, send ping message every 1 second, with a 10 minutes time-out
|
|
tick := time.NewTicker(1 * time.Second)
|
|
timeout := time.NewTicker(10 * time.Minute)
|
|
defer tick.Stop()
|
|
defer timeout.Stop()
|
|
|
|
for {
|
|
select {
|
|
case <-tick.C:
|
|
ping := proto_discovery.NewPingMessage(node.SelfPeer)
|
|
if node.Client != nil { // assume this is the client node
|
|
ping.Node.Role = proto_node.ClientRole
|
|
}
|
|
buffer := ping.ConstructPingMessage()
|
|
|
|
// Talk to leader.
|
|
node.SendMessage(leader, buffer)
|
|
case <-timeout.C:
|
|
utils.GetLogInstance().Info("JoinShard timeout")
|
|
return
|
|
case <-node.StopPing:
|
|
utils.GetLogInstance().Info("Stopping JoinShard")
|
|
return
|
|
}
|
|
}
|
|
}
|
|
|
|
// SupportSyncing keeps sleeping until it's doing consensus or it's a leader.
|
|
func (node *Node) SupportSyncing() {
|
|
node.InitSyncingServer()
|
|
node.StartSyncingServer()
|
|
|
|
go node.DoSyncing()
|
|
go node.SendNewBlockToUnsync()
|
|
}
|
|
|
|
// InitSyncingServer starts downloader server.
|
|
func (node *Node) InitSyncingServer() {
|
|
node.downloaderServer = downloader.NewServer(node)
|
|
}
|
|
|
|
// StartSyncingServer starts syncing server.
|
|
func (node *Node) StartSyncingServer() {
|
|
utils.GetLogInstance().Info("support_sycning: StartSyncingServer")
|
|
node.downloaderServer.Start(node.SelfPeer.IP, GetSyncingPort(node.SelfPeer.Port))
|
|
}
|
|
|
|
// CalculateResponse implements DownloadInterface on Node object.
|
|
func (node *Node) CalculateResponse(request *downloader_pb.DownloaderRequest) (*downloader_pb.DownloaderResponse, error) {
|
|
response := &downloader_pb.DownloaderResponse{}
|
|
switch request.Type {
|
|
case downloader_pb.DownloaderRequest_HEADER:
|
|
utils.GetLogInstance().Debug("[SYNC] CalculateResponse DownloaderRequest_HEADER", "request.BlockHash", request.BlockHash)
|
|
var startHeaderHash []byte
|
|
if request.BlockHash == nil {
|
|
tmp := node.blockchain.Genesis().Hash()
|
|
startHeaderHash = tmp[:]
|
|
} else {
|
|
startHeaderHash = request.BlockHash
|
|
}
|
|
for block := node.blockchain.CurrentBlock(); block != nil; block = node.blockchain.GetBlockByHash(block.Header().ParentHash) {
|
|
blockHash := block.Hash()
|
|
if bytes.Compare(blockHash[:], startHeaderHash) == 0 {
|
|
break
|
|
}
|
|
response.Payload = append(response.Payload, blockHash[:])
|
|
}
|
|
case downloader_pb.DownloaderRequest_BLOCK:
|
|
for _, bytes := range request.Hashes {
|
|
var hash common.Hash
|
|
hash.SetBytes(bytes)
|
|
block := node.blockchain.GetBlockByHash(hash)
|
|
encodedBlock, err := rlp.EncodeToBytes(block)
|
|
if err == nil {
|
|
response.Payload = append(response.Payload, encodedBlock)
|
|
}
|
|
}
|
|
case downloader_pb.DownloaderRequest_NEWBLOCK:
|
|
if node.State != NodeNotInSync {
|
|
utils.GetLogInstance().Debug("[SYNC] new block received, but state is", "state", node.State.String())
|
|
response.Type = downloader_pb.DownloaderResponse_INSYNC
|
|
return response, nil
|
|
}
|
|
var blockObj types.Block
|
|
err := rlp.DecodeBytes(request.BlockHash, &blockObj)
|
|
if err != nil {
|
|
utils.GetLogInstance().Warn("[SYNC] unable to decode received new block")
|
|
return response, err
|
|
}
|
|
node.stateSync.AddNewBlock(request.PeerHash, &blockObj)
|
|
|
|
case downloader_pb.DownloaderRequest_REGISTER:
|
|
peerID := binary.BigEndian.Uint32(request.PeerHash)
|
|
if _, ok := node.peerRegistrationRecord[peerID]; ok {
|
|
response.Type = downloader_pb.DownloaderResponse_FAIL
|
|
return response, nil
|
|
} else if len(node.peerRegistrationRecord) >= maxBroadcastNodes {
|
|
response.Type = downloader_pb.DownloaderResponse_FAIL
|
|
return response, nil
|
|
} else {
|
|
peer, ok := node.Consensus.GetPeerFromID(peerID)
|
|
if !ok {
|
|
utils.GetLogInstance().Warn("[SYNC] unable to get peer from peerID", "peerID", peerID)
|
|
}
|
|
client := downloader.ClientSetup(peer.IP, GetSyncingPort(peer.Port))
|
|
if client == nil {
|
|
utils.GetLogInstance().Warn("[SYNC] unable to setup client")
|
|
return response, nil
|
|
}
|
|
utils.GetLogInstance().Debug("[SYNC] client setup correctly", "client", client)
|
|
config := &syncConfig{timestamp: time.Now().UnixNano(), client: client}
|
|
node.stateMutex.Lock()
|
|
node.peerRegistrationRecord[peerID] = config
|
|
node.stateMutex.Unlock()
|
|
utils.GetLogInstance().Debug("[SYNC] register peerID success", "peerID", peerID)
|
|
response.Type = downloader_pb.DownloaderResponse_SUCCESS
|
|
}
|
|
case downloader_pb.DownloaderRequest_REGISTERTIMEOUT:
|
|
if node.State == NodeNotInSync {
|
|
count := node.stateSync.RegisterNodeInfo()
|
|
utils.GetLogInstance().Debug("[SYNC] extra node registered", "number", count)
|
|
}
|
|
}
|
|
return response, nil
|
|
}
|
|
|
|
// SendNewBlockToUnsync send latest verified block to unsync, registered nodes
|
|
func (node *Node) SendNewBlockToUnsync() {
|
|
for {
|
|
block := <-node.Consensus.VerifiedNewBlock
|
|
blockHash, err := rlp.EncodeToBytes(block)
|
|
if err != nil {
|
|
utils.GetLogInstance().Warn("[SYNC] unable to encode block to hashes")
|
|
continue
|
|
}
|
|
|
|
// really need to have a unique id independent of ip/port
|
|
selfPeerID := utils.GetUniqueIDFromIPPort(node.SelfPeer.IP, node.SelfPeer.Port)
|
|
utils.GetLogInstance().Debug("[SYNC] peerRegistration Record", "peerID", selfPeerID, "number", len(node.peerRegistrationRecord))
|
|
|
|
for peerID, config := range node.peerRegistrationRecord {
|
|
elapseTime := time.Now().UnixNano() - config.timestamp
|
|
if elapseTime > broadcastTimeout {
|
|
utils.GetLogInstance().Warn("[SYNC] SendNewBlockToUnsync to peer timeout", "peerID", peerID)
|
|
// send last time and delete
|
|
config.client.PushNewBlock(selfPeerID, blockHash, true)
|
|
node.stateMutex.Lock()
|
|
node.peerRegistrationRecord[peerID].client.Close()
|
|
delete(node.peerRegistrationRecord, peerID)
|
|
node.stateMutex.Unlock()
|
|
continue
|
|
}
|
|
response := config.client.PushNewBlock(selfPeerID, blockHash, false)
|
|
if response != nil && response.Type == downloader_pb.DownloaderResponse_INSYNC {
|
|
node.stateMutex.Lock()
|
|
node.peerRegistrationRecord[peerID].client.Close()
|
|
delete(node.peerRegistrationRecord, peerID)
|
|
node.stateMutex.Unlock()
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// RemovePeersHandler is a goroutine to wait on the OfflinePeers channel
|
|
// and remove the peers from validator list
|
|
func (node *Node) RemovePeersHandler() {
|
|
for {
|
|
select {
|
|
case p := <-node.OfflinePeers:
|
|
node.Consensus.OfflinePeerList = append(node.Consensus.OfflinePeerList, p)
|
|
}
|
|
}
|
|
}
|
|
|
|
//UpdateStakingList updates the stakes of every node.
|
|
func (node *Node) UpdateStakingList(block *types.Block) error {
|
|
signerType := types.HomesteadSigner{}
|
|
txns := block.Transactions()
|
|
for i := range txns {
|
|
txn := txns[i]
|
|
toAddress := txn.To()
|
|
if *toAddress != node.StakingContractAddress { //Not a address aimed at the staking contract.
|
|
continue
|
|
}
|
|
currentSender, _ := types.Sender(signerType, txn)
|
|
_, isPresent := node.CurrentStakes[currentSender]
|
|
data := txn.Data()
|
|
switch funcSignature := decodeFuncSign(data); funcSignature {
|
|
case depositFuncSignature: //deposit, currently: 0xd0e30db0
|
|
amount := txn.Value()
|
|
value := amount.Int64()
|
|
if isPresent {
|
|
//This means the node has increased its stake.
|
|
node.CurrentStakes[currentSender] += value
|
|
} else {
|
|
//This means its a new node that is staking the first time.
|
|
node.CurrentStakes[currentSender] = value
|
|
}
|
|
case withdrawFuncSignature: //withdaw, currently: 0x2e1a7d4d
|
|
value := decodeStakeCall(data)
|
|
if isPresent {
|
|
if node.CurrentStakes[currentSender] > value {
|
|
node.CurrentStakes[currentSender] -= value
|
|
} else if node.CurrentStakes[currentSender] == value {
|
|
delete(node.CurrentStakes, currentSender)
|
|
} else {
|
|
continue //Overdraft protection.
|
|
}
|
|
} else {
|
|
continue //no-op: a node that is not staked cannot withdraw stake.
|
|
}
|
|
default:
|
|
continue //no-op if its not deposit or withdaw
|
|
}
|
|
}
|
|
return nil
|
|
}
|
|
|
|
//The first four bytes of the call data for a function call specifies the function to be called.
|
|
//It is the first (left, high-order in big-endian) four bytes of the Keccak-256 (SHA-3)
|
|
//Refer: https://solidity.readthedocs.io/en/develop/abi-spec.html
|
|
func decodeStakeCall(getData []byte) int64 {
|
|
value := new(big.Int)
|
|
value.SetBytes(getData[funcSingatureBytes:]) //Escape the method call.
|
|
return value.Int64()
|
|
}
|
|
|
|
//The first four bytes of the call data for a function call specifies the function to be called.
|
|
//It is the first (left, high-order in big-endian) four bytes of the Keccak-256 (SHA-3)
|
|
//Refer: https://solidity.readthedocs.io/en/develop/abi-spec.html
|
|
//gets the function signature from data.
|
|
func decodeFuncSign(data []byte) string {
|
|
funcSign := hexutil.Encode(data[:funcSingatureBytes]) //The function signature is first 4 bytes of data in ethereum
|
|
return funcSign
|
|
}
|
|
|
|
func (node *Node) setupForShardLeader() {
|
|
// Register explorer service.
|
|
node.serviceManager.RegisterService(service_manager.SupportExplorer, explorer.New(&node.SelfPeer))
|
|
// Register consensus service.
|
|
node.serviceManager.RegisterService(service_manager.Consensus, consensus_service.New(node.BlockChannel, node.Consensus))
|
|
// Register new block service.
|
|
node.serviceManager.RegisterService(service_manager.BlockProposal, blockproposal.New(node.Consensus.ReadySignal, node.WaitForConsensusReady))
|
|
// Register client support service.
|
|
node.serviceManager.RegisterService(service_manager.ClientSupport, clientsupport.New(node.blockchain.State, node.CallFaucetContract, node.getDeployedStakingContract, node.SelfPeer.IP, node.SelfPeer.Port))
|
|
// Register randomness service
|
|
node.serviceManager.RegisterService(service_manager.Randomness, randomness_service.New(node.DRand))
|
|
}
|
|
|
|
func (node *Node) setupForShardValidator() {
|
|
}
|
|
|
|
func (node *Node) setupForBeaconLeader() {
|
|
chanPeer := make(chan p2p.Peer)
|
|
|
|
var err error
|
|
node.groupReceiver, err = node.host.GroupReceiver(p2p.GroupIDBeacon)
|
|
if err != nil {
|
|
utils.GetLogInstance().Error("create group receiver error", "msg", err)
|
|
return
|
|
}
|
|
|
|
// Register peer discovery service. "0" is the beacon shard ID. No need to do staking for beacon chain node.
|
|
node.serviceManager.RegisterService(service_manager.PeerDiscovery, discovery.New(node.host, "0", chanPeer, nil))
|
|
// Register networkinfo service. "0" is the beacon shard ID
|
|
node.serviceManager.RegisterService(service_manager.NetworkInfo, networkinfo.New(node.host, "0", chanPeer))
|
|
|
|
// Register consensus service.
|
|
node.serviceManager.RegisterService(service_manager.Consensus, consensus_service.New(node.BlockChannel, node.Consensus))
|
|
// Register new block service.
|
|
node.serviceManager.RegisterService(service_manager.BlockProposal, blockproposal.New(node.Consensus.ReadySignal, node.WaitForConsensusReady))
|
|
// Register client support service.
|
|
node.serviceManager.RegisterService(service_manager.ClientSupport, clientsupport.New(node.blockchain.State, node.CallFaucetContract, node.getDeployedStakingContract, node.SelfPeer.IP, node.SelfPeer.Port))
|
|
// Register randomness service
|
|
node.serviceManager.RegisterService(service_manager.Randomness, randomness_service.New(node.DRand))
|
|
|
|
}
|
|
|
|
func (node *Node) setupForBeaconValidator() {
|
|
chanPeer := make(chan p2p.Peer)
|
|
|
|
var err error
|
|
node.groupReceiver, err = node.host.GroupReceiver(p2p.GroupIDBeacon)
|
|
if err != nil {
|
|
utils.GetLogInstance().Error("create group receiver error", "msg", err)
|
|
return
|
|
}
|
|
|
|
// Register peer discovery service. "0" is the beacon shard ID. No need to do staking for beacon chain node.
|
|
node.serviceManager.RegisterService(service_manager.PeerDiscovery, discovery.New(node.host, "0", chanPeer, nil))
|
|
// Register networkinfo service. "0" is the beacon shard ID
|
|
node.serviceManager.RegisterService(service_manager.NetworkInfo, networkinfo.New(node.host, "0", chanPeer))
|
|
// Register randomness service
|
|
node.serviceManager.RegisterService(service_manager.Randomness, randomness_service.New(node.DRand))
|
|
}
|
|
|
|
func (node *Node) setupForNewNode() {
|
|
chanPeer := make(chan p2p.Peer)
|
|
stakingPeer := make(chan p2p.Peer)
|
|
|
|
var err error
|
|
node.groupReceiver, err = node.host.GroupReceiver(p2p.GroupIDBeacon)
|
|
if err != nil {
|
|
utils.GetLogInstance().Error("create group receiver error", "msg", err)
|
|
return
|
|
}
|
|
|
|
// Register staking service.
|
|
node.serviceManager.RegisterService(service_manager.Staking, staking.New(node.AccountKey, 0, stakingPeer))
|
|
// Register peer discovery service. "0" is the beacon shard ID
|
|
node.serviceManager.RegisterService(service_manager.PeerDiscovery, discovery.New(node.host, "0", chanPeer, stakingPeer))
|
|
// Register networkinfo service. "0" is the beacon shard ID
|
|
node.serviceManager.RegisterService(service_manager.NetworkInfo, networkinfo.New(node.host, "0", chanPeer))
|
|
|
|
// TODO: how to restart networkinfo and discovery service after receiving shard id info from beacon chain?
|
|
}
|
|
|
|
// ServiceManagerSetup setups service store.
|
|
func (node *Node) ServiceManagerSetup() {
|
|
node.serviceManager = &service_manager.Manager{}
|
|
switch node.Role {
|
|
case ShardLeader:
|
|
node.setupForShardLeader()
|
|
case ShardValidator:
|
|
node.setupForShardValidator()
|
|
case BeaconLeader:
|
|
node.setupForBeaconLeader()
|
|
case BeaconValidator:
|
|
node.setupForBeaconValidator()
|
|
case NewNode:
|
|
node.setupForNewNode()
|
|
}
|
|
}
|
|
|
|
// RunServices runs registered services.
|
|
func (node *Node) RunServices() {
|
|
if node.serviceManager == nil {
|
|
utils.GetLogInstance().Info("Service manager is not set up yet.")
|
|
return
|
|
}
|
|
node.serviceManager.RunServices()
|
|
}
|
|
|