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remove btctxgen

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pull/76/head
Richard Liu 6 years ago
parent 780fedaec4
commit 85633ef482
1 changed files with 0 additions and 293 deletions
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  1. 293
      client/btctxgen/main.go

293
client/btctxgen/main.go
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/*
The btctxgen iterates the btc tx history block by block, transaction by transaction.
The btxtxiter provide a simple api called `NextTx` for us to move thru TXs one by one.
Same as txgen, iterate on each shard to generate simulated TXs (GenerateSimulatedTransactions):
1. Get a new btc tx
2. If it's a coinbase tx, create a corresponding coinbase tx in our blockchain
3. Otherwise, create a normal TX, which might be cross-shard and might not, depending on whether all the TX inputs belong to the current shard.
Same as txgen, send single shard tx shard by shard, then broadcast cross shard tx.
TODO
Some todos for ricl
* correct the logic to outputing to one of the input shard, rather than the current shard
*/
package main
import (
"flag"
"fmt"
"sync"
"time"
"github.com/simple-rules/harmony-benchmark/blockchain"
"github.com/simple-rules/harmony-benchmark/client"
"github.com/simple-rules/harmony-benchmark/client/btctxiter"
client_config "github.com/simple-rules/harmony-benchmark/client/config"
"github.com/simple-rules/harmony-benchmark/consensus"
"github.com/simple-rules/harmony-benchmark/crypto/pki"
"github.com/simple-rules/harmony-benchmark/log"
"github.com/simple-rules/harmony-benchmark/node"
"github.com/simple-rules/harmony-benchmark/p2p"
proto_node "github.com/simple-rules/harmony-benchmark/proto/node"
)
type txGenSettings struct {
crossShard bool
maxNumTxsPerBatch int
}
type TXRef struct {
txID [32]byte
shardID uint32
toAddress [20]byte // we use the same toAddress in btc and hmy
}
var (
utxoPoolMutex sync.Mutex
setting txGenSettings
iter btctxiter.BTCTXIterator
utxoMapping map[string]TXRef // btcTXID to { txID, shardID }
// map from bitcoin address to a int value (the privKey in hmy)
addressMapping map[[20]byte]int
currentInt int
)
func getHmyInt(btcAddr [20]byte) int {
var privKey int
if privKey, ok := addressMapping[btcAddr]; !ok { // If cannot find key
privKey = currentInt
addressMapping[btcAddr] = privKey
currentInt++
}
return privKey
}
// Generates at most "maxNumTxs" number of simulated transactions based on the current UtxoPools of all shards.
// The transactions are generated by going through the existing utxos and
// randomly select a subset of them as the input for each new transaction. The output
// address of the new transaction are randomly selected from [0 - N), where N is the total number of fake addresses.
//
// When crossShard=true, besides the selected utxo input, select another valid utxo as input from the same address in a second shard.
// Similarly, generate another utxo output in that second shard.
//
// NOTE: the genesis block should contain N coinbase transactions which add
// token (1000) to each address in [0 - N). See node.AddTestingAddresses()
//
// Params:
// shardID - the shardID for current shard
// dataNodes - nodes containing utxopools of all shards
// Returns:
// all single-shard txs
// all cross-shard txs
func generateSimulatedTransactions(shardID int, dataNodes []*node.Node) ([]*blockchain.Transaction, []*blockchain.Transaction) {
/*
UTXO map structure:
{
address: {
txID: {
outputIndex: value
}
}
}
*/
utxoPoolMutex.Lock()
txs := []*blockchain.Transaction{}
crossTxs := []*blockchain.Transaction{}
nodeShardID := dataNodes[shardID].Consensus.ShardID
cnt := 0
LOOP:
for {
btcTx := iter.NextTx()
if btcTx == nil {
log.Error("Failed to parse tx", "height", iter.GetBlockIndex())
}
tx := blockchain.Transaction{}
isCrossShardTx := false
if btctxiter.IsCoinBaseTx(btcTx) {
// ricl: coinbase tx should just have one txo
btcTXO := btcTx.Vout[0]
btcTXOAddr := btcTXO.ScriptPubKey.Addresses[0]
var toAddress [20]byte
copy(toAddress[:], btcTXOAddr) // TODO(ricl): string to [20]byte
hmyInt := getHmyInt(toAddress)
tx = *blockchain.NewCoinbaseTX(pki.GetAddressFromInt(hmyInt), "", nodeShardID)
utxoMapping[btcTx.Hash] = TXRef{tx.ID, nodeShardID, toAddress}
} else {
var btcFromAddresses [][20]byte
for _, btcTXI := range btcTx.Vin {
btcTXIDStr := btcTXI.Txid
txRef := utxoMapping[btcTXIDStr] // find the corresponding harmony tx info
if txRef.shardID != nodeShardID {
isCrossShardTx = true
}
tx.TxInput = append(tx.TxInput, *blockchain.NewTXInput(blockchain.NewOutPoint(&txRef.txID, btcTXI.Vout), [20]byte{}, txRef.shardID))
// Add the from address to array, so that we can later use it to sign the tx.
btcFromAddresses = append(btcFromAddresses, txRef.toAddress)
}
for _, btcTXO := range btcTx.Vout {
for _, btcTXOAddr := range btcTXO.ScriptPubKey.Addresses {
var toAddress [20]byte
copy(toAddress[:], btcTXOAddr) //TODO(ricl): string to [20]byte
txo := blockchain.TXOutput{Amount: int(btcTXO.Value), Address: toAddress, ShardID: nodeShardID}
tx.TxOutput = append(tx.TxOutput, txo)
utxoMapping[btcTx.Txid] = TXRef{tx.ID, nodeShardID, toAddress}
}
}
// get private key and sign the tx
for _, btcFromAddress := range btcFromAddresses {
hmyInt := getHmyInt(btcFromAddress)
tx.SetID() // TODO(RJ): figure out the correct way to set Tx ID.
tx.Sign(pki.GetPrivateKeyScalarFromInt(hmyInt))
}
}
if isCrossShardTx {
crossTxs = append(crossTxs, &tx)
} else {
txs = append(txs, &tx)
}
// log.Debug("[Generator] transformed btc tx", "block height", iter.GetBlockIndex(), "block tx count", iter.GetBlock().TxCount, "block tx cnt", len(iter.GetBlock().Txs), "txi", len(tx.TxInput), "txo", len(tx.TxOutput), "txCount", cnt)
cnt++
if cnt >= setting.maxNumTxsPerBatch {
break LOOP
}
}
utxoPoolMutex.Unlock()
log.Debug("[Generator] generated transations", "single-shard", len(txs), "cross-shard", len(crossTxs))
return txs, crossTxs
}
func initClient(clientNode *node.Node, clientPort string, shardIDLeaderMap *map[uint32]p2p.Peer, nodes *[]*node.Node) {
if clientPort == "" {
return
}
clientNode.Client = client.NewClient(shardIDLeaderMap)
// This func is used to update the client's utxopool when new blocks are received from the leaders
updateBlocksFunc := func(blocks []*blockchain.Block) {
log.Debug("Received new block from leader", "len", len(blocks))
for _, block := range blocks {
for _, node := range *nodes {
if node.Consensus.ShardID == block.ShardID {
log.Debug("Adding block from leader", "shardID", block.ShardID)
// Add it to blockchain
utxoPoolMutex.Lock()
node.AddNewBlock(block)
utxoPoolMutex.Unlock()
} else {
continue
}
}
}
}
clientNode.Client.UpdateBlocks = updateBlocksFunc
// Start the client server to listen to leader's message
go func() {
clientNode.StartServer(clientPort)
}()
}
func main() {
configFile := flag.String("config_file", "local_config.txt", "file containing all ip addresses and config")
maxNumTxsPerBatch := flag.Int("max_num_txs_per_batch", 10000, "number of transactions to send per message")
logFolder := flag.String("log_folder", "latest", "the folder collecting the logs of this execution")
flag.Parse()
// Read the configs
config := client_config.NewConfig()
config.ReadConfigFile(*configFile)
shardIDLeaderMap := config.GetShardIDToLeaderMap()
// Do cross shard tx if there are more than one shard
setting.crossShard = len(shardIDLeaderMap) > 1
setting.maxNumTxsPerBatch = *maxNumTxsPerBatch
// TODO(Richard): refactor this chuck to a single method
// Setup a logger to stdout and log file.
logFileName := fmt.Sprintf("./%v/txgen.log", *logFolder)
h := log.MultiHandler(
log.StdoutHandler,
log.Must.FileHandler(logFileName, log.LogfmtFormat()), // Log to file
// log.Must.NetHandler("tcp", ":3000", log.JSONFormat()) // Log to remote
)
log.Root().SetHandler(h)
iter.Init()
utxoMapping = make(map[string]TXRef)
addressMapping = make(map[[20]byte]int)
currentInt = 1 // start from address 1
// Nodes containing utxopools to mirror the shards' data in the network
nodes := []*node.Node{}
for shardID, _ := range shardIDLeaderMap {
node := node.New(&consensus.Consensus{ShardID: shardID}, nil)
// Assign many fake addresses so we have enough address to play with at first
node.AddTestingAddresses(10000)
nodes = append(nodes, node)
}
// Client/txgenerator server node setup
clientPort := config.GetClientPort()
consensusObj := consensus.NewConsensus("0", clientPort, "0", nil, p2p.Peer{})
clientNode := node.New(consensusObj, nil)
initClient(clientNode, clientPort, &shardIDLeaderMap, &nodes)
// Transaction generation process
time.Sleep(3 * time.Second) // wait for nodes to be ready
leaders := []p2p.Peer{}
for _, leader := range shardIDLeaderMap {
leaders = append(leaders, leader)
}
for {
allCrossTxs := []*blockchain.Transaction{}
// Generate simulated transactions
for shardID, leader := range shardIDLeaderMap {
txs, crossTxs := generateSimulatedTransactions(int(shardID), nodes)
allCrossTxs = append(allCrossTxs, crossTxs...)
log.Debug("[Generator] Sending single-shard txs ...", "leader", leader, "numTxs", len(txs), "numCrossTxs", len(crossTxs), "block height", iter.GetBlockIndex())
msg := proto_node.ConstructTransactionListMessage(txs)
p2p.SendMessage(leader, msg)
// Note cross shard txs are later sent in batch
}
if len(allCrossTxs) > 0 {
log.Debug("[Generator] Broadcasting cross-shard txs ...", "allCrossTxs", len(allCrossTxs))
msg := proto_node.ConstructTransactionListMessage(allCrossTxs)
p2p.BroadcastMessage(leaders, msg)
// Put cross shard tx into a pending list waiting for proofs from leaders
if clientPort != "" {
clientNode.Client.PendingCrossTxsMutex.Lock()
for _, tx := range allCrossTxs {
clientNode.Client.PendingCrossTxs[tx.ID] = tx
}
clientNode.Client.PendingCrossTxsMutex.Unlock()
}
}
time.Sleep(500 * time.Millisecond) // Send a batch of transactions periodically
}
// Send a stop message to stop the nodes at the end
msg := proto_node.ConstructStopMessage()
peers := append(config.GetValidators(), leaders...)
p2p.BroadcastMessage(peers, msg)
}
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