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.
261 lines
9.1 KiB
261 lines
9.1 KiB
package node
|
|
|
|
import (
|
|
"bytes"
|
|
"crypto/ecdsa"
|
|
"encoding/gob"
|
|
"fmt"
|
|
"github.com/ethereum/go-ethereum/crypto"
|
|
"github.com/ethereum/go-ethereum/params"
|
|
"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/node/worker"
|
|
"math/big"
|
|
"net"
|
|
"sync"
|
|
"time"
|
|
|
|
"github.com/harmony-one/harmony/blockchain"
|
|
"github.com/harmony-one/harmony/client"
|
|
bft "github.com/harmony-one/harmony/consensus"
|
|
"github.com/harmony-one/harmony/crypto/pki"
|
|
hdb "github.com/harmony-one/harmony/db"
|
|
"github.com/harmony-one/harmony/log"
|
|
"github.com/harmony-one/harmony/p2p"
|
|
proto_identity "github.com/harmony-one/harmony/proto/identity"
|
|
|
|
"github.com/jinzhu/copier"
|
|
)
|
|
|
|
type NetworkNode struct {
|
|
SelfPeer p2p.Peer
|
|
IDCPeer p2p.Peer
|
|
}
|
|
|
|
// Node represents a program (machine) participating in the network
|
|
// TODO(minhdoan, rj): consider using BlockChannel *chan blockchain.Block for efficiency.
|
|
type Node struct {
|
|
Consensus *bft.Consensus // Consensus object containing all Consensus related data (e.g. committee members, signatures, commits)
|
|
BlockChannel chan blockchain.Block // The channel to receive new blocks from Node
|
|
pendingTransactions []*blockchain.Transaction // All the transactions received but not yet processed for Consensus
|
|
transactionInConsensus []*blockchain.Transaction // The transactions selected into the new block and under Consensus process
|
|
blockchain *blockchain.Blockchain // The blockchain for the shard where this node belongs
|
|
db *hdb.LDBDatabase // LevelDB to store blockchain.
|
|
UtxoPool *blockchain.UTXOPool // The corresponding UTXO pool of the current blockchain
|
|
CrossTxsInConsensus []*blockchain.CrossShardTxAndProof // The cross shard txs that is under consensus, the proof is not filled yet.
|
|
CrossTxsToReturn []*blockchain.CrossShardTxAndProof // The cross shard txs and proof that needs to be sent back to the user client.
|
|
log log.Logger // Log utility
|
|
pendingTxMutex sync.Mutex
|
|
crossTxToReturnMutex sync.Mutex
|
|
ClientPeer *p2p.Peer // The peer for the benchmark 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
|
|
IsWaiting bool
|
|
SelfPeer p2p.Peer // TODO(minhdoan): it could be duplicated with Self below whose is Alok work.
|
|
IDCPeer p2p.Peer
|
|
|
|
SyncNode bool // TODO(minhdoan): Remove it later.
|
|
chain *core.BlockChain // Account Model
|
|
Neighbors map[string]*p2p.Peer // All the neighbor nodes, key is the sha256 of Peer IP/Port
|
|
|
|
// Account Model
|
|
Chain *core.BlockChain
|
|
TxPool *core.TxPool
|
|
BlockChannelAccount chan *types.Block // The channel to receive new blocks from Node
|
|
worker *worker.Worker
|
|
|
|
// Test only
|
|
testBankKey *ecdsa.PrivateKey
|
|
}
|
|
|
|
// Add new crossTx and proofs to the list of crossTx that needs to be sent back to client
|
|
func (node *Node) addCrossTxsToReturn(crossTxs []*blockchain.CrossShardTxAndProof) {
|
|
node.crossTxToReturnMutex.Lock()
|
|
node.CrossTxsToReturn = append(node.CrossTxsToReturn, crossTxs...)
|
|
node.crossTxToReturnMutex.Unlock()
|
|
node.log.Debug("Got more cross transactions to return", "num", len(crossTxs), len(node.pendingTransactions), "node", node)
|
|
}
|
|
|
|
// Add new transactions to the pending transaction list
|
|
func (node *Node) addPendingTransactions(newTxs []*blockchain.Transaction) {
|
|
node.pendingTxMutex.Lock()
|
|
node.pendingTransactions = append(node.pendingTransactions, newTxs...)
|
|
node.pendingTxMutex.Unlock()
|
|
node.log.Debug("Got more transactions", "num", len(newTxs), "totalPending", len(node.pendingTransactions), "node", node)
|
|
}
|
|
|
|
// 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) ([]*blockchain.Transaction, []*blockchain.CrossShardTxAndProof) {
|
|
node.pendingTxMutex.Lock()
|
|
selected, unselected, invalid, crossShardTxs := node.UtxoPool.SelectTransactionsForNewBlock(node.pendingTransactions, maxNumTxs)
|
|
_ = invalid // invalid txs are discard
|
|
|
|
node.log.Debug("Invalid transactions discarded", "number", len(invalid))
|
|
node.pendingTransactions = unselected
|
|
node.pendingTxMutex.Unlock()
|
|
return selected, crossShardTxs
|
|
}
|
|
|
|
// StartServer starts a server and process the request by a handler.
|
|
func (node *Node) StartServer(port string) {
|
|
if node.SyncNode {
|
|
// Disable this temporarily.
|
|
// node.blockchain = syncing.StartBlockSyncing(node.Consensus.GetValidatorPeers())
|
|
}
|
|
fmt.Println("going to start server on port:", port)
|
|
//node.log.Debug("Starting server", "node", node, "port", port)
|
|
node.listenOnPort(port)
|
|
}
|
|
|
|
func (node *Node) SetLog() *Node {
|
|
node.log = log.New()
|
|
return node
|
|
}
|
|
|
|
func (node *Node) listenOnPort(port string) {
|
|
addr := net.JoinHostPort("", port)
|
|
listen, err := net.Listen("tcp4", addr)
|
|
if err != nil {
|
|
node.log.Error("Socket listen port failed", "addr", addr, "err", err)
|
|
return
|
|
}
|
|
if listen == nil {
|
|
node.log.Error("Listen returned nil", "addr", addr)
|
|
return
|
|
}
|
|
defer listen.Close()
|
|
backoff := p2p.NewExpBackoff(250*time.Millisecond, 15*time.Second, 2.0)
|
|
for {
|
|
conn, err := listen.Accept()
|
|
if err != nil {
|
|
node.log.Error("Error listening on port.", "port", port,
|
|
"err", err)
|
|
backoff.Sleep()
|
|
continue
|
|
}
|
|
go node.NodeHandler(conn)
|
|
}
|
|
}
|
|
|
|
func (node *Node) String() string {
|
|
return node.Consensus.String()
|
|
}
|
|
|
|
// Count the total number of transactions in the blockchain
|
|
// Currently used for stats reporting purpose
|
|
func (node *Node) countNumTransactionsInBlockchain() int {
|
|
count := 0
|
|
for _, block := range node.blockchain.Blocks {
|
|
count += len(block.Transactions)
|
|
}
|
|
return count
|
|
}
|
|
|
|
//ConnectIdentityChain connects to identity chain
|
|
func (node *Node) ConnectBeaconChain() {
|
|
Nnode := &NetworkNode{SelfPeer: node.SelfPeer, IDCPeer: node.IDCPeer}
|
|
msg := node.SerializeNode(Nnode)
|
|
msgToSend := proto_identity.ConstructIdentityMessage(proto_identity.Register, msg)
|
|
p2p.SendMessage(node.IDCPeer, msgToSend)
|
|
}
|
|
|
|
// SerializeNode serializes the node
|
|
// https://stackoverflow.com/questions/12854125/how-do-i-dump-the-struct-into-the-byte-array-without-reflection/12854659#12854659
|
|
func (node *Node) SerializeNode(nnode *NetworkNode) []byte {
|
|
//Needs to escape the serialization of unexported fields
|
|
var result bytes.Buffer
|
|
encoder := gob.NewEncoder(&result)
|
|
err := encoder.Encode(nnode)
|
|
if err != nil {
|
|
fmt.Println("Could not serialize node")
|
|
fmt.Println("ERROR", err)
|
|
//node.log.Error("Could not serialize node")
|
|
}
|
|
|
|
return result.Bytes()
|
|
}
|
|
|
|
// DeserializeNode deserializes the node
|
|
func DeserializeNode(d []byte) *NetworkNode {
|
|
var wn NetworkNode
|
|
r := bytes.NewBuffer(d)
|
|
decoder := gob.NewDecoder(r)
|
|
err := decoder.Decode(&wn)
|
|
if err != nil {
|
|
log.Error("Could not de-serialize node 1")
|
|
}
|
|
return &wn
|
|
}
|
|
|
|
// New creates a new node.
|
|
func New(consensus *bft.Consensus, db *hdb.LDBDatabase) *Node {
|
|
node := Node{}
|
|
|
|
if consensus != nil {
|
|
// Consensus and associated channel to communicate blocks
|
|
node.Consensus = consensus
|
|
node.BlockChannel = make(chan blockchain.Block)
|
|
|
|
// Genesis Block
|
|
// TODO(minh): Use or implement new function in blockchain package for this.
|
|
genesisBlock := &blockchain.Blockchain{}
|
|
genesisBlock.Blocks = make([]*blockchain.Block, 0)
|
|
// TODO(RJ): use miner's address as coinbase address
|
|
coinbaseTx := blockchain.NewCoinbaseTX(pki.GetAddressFromInt(1), "0", node.Consensus.ShardID)
|
|
genesisBlock.Blocks = append(genesisBlock.Blocks, blockchain.NewGenesisBlock(coinbaseTx, node.Consensus.ShardID))
|
|
node.blockchain = genesisBlock
|
|
|
|
// UTXO pool from Genesis block
|
|
node.UtxoPool = blockchain.CreateUTXOPoolFromGenesisBlock(node.blockchain.Blocks[0])
|
|
|
|
// Initialize level db.
|
|
node.db = db
|
|
|
|
// (account model)
|
|
|
|
node.testBankKey, _ = crypto.GenerateKey()
|
|
testBankAddress := crypto.PubkeyToAddress(node.testBankKey.PublicKey)
|
|
testBankFunds := big.NewInt(1000000000000000000)
|
|
database := hdb.NewMemDatabase()
|
|
gspec := core.Genesis{
|
|
Alloc: core.GenesisAlloc{testBankAddress: {Balance: testBankFunds}},
|
|
}
|
|
|
|
genesis := gspec.MustCommit(database)
|
|
fmt.Println(genesis.Root())
|
|
chain, _ := core.NewBlockChain(database, nil, gspec.Config, bft.NewFaker(), vm.Config{}, nil)
|
|
|
|
node.Chain = chain
|
|
node.TxPool = core.NewTxPool(core.DefaultTxPoolConfig, params.TestChainConfig, chain)
|
|
node.BlockChannelAccount = make(chan *types.Block)
|
|
|
|
}
|
|
// Logger
|
|
node.log = log.New()
|
|
node.Neighbors = make(map[string]*p2p.Peer)
|
|
|
|
return &node
|
|
}
|
|
|
|
// Add 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[key]
|
|
if !ok {
|
|
np := new(p2p.Peer)
|
|
copier.Copy(np, &p)
|
|
node.Neighbors[key] = np
|
|
count++
|
|
}
|
|
}
|
|
node.log.Info("Added", "# of peers", count)
|
|
|
|
if count > 0 {
|
|
c := node.Consensus.AddPeers(peers)
|
|
node.log.Info("Added in Consensus", "# of peers", c)
|
|
}
|
|
return count
|
|
}
|
|
|