Richard Liu
6 years ago
committed by
GitHub
commit
5715fbcdc4
@ -0,0 +1,275 @@ |
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package main |
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import ( |
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"encoding/hex" |
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"flag" |
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"fmt" |
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"harmony-benchmark/blockchain" |
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"harmony-benchmark/client" |
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"harmony-benchmark/client/btctxiter" |
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"harmony-benchmark/configr" |
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"harmony-benchmark/consensus" |
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"harmony-benchmark/log" |
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"harmony-benchmark/node" |
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"harmony-benchmark/p2p" |
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"math/rand" |
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"sync" |
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"time" |
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) |
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type txGenSettings struct { |
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numOfAddress int |
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crossShard bool |
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maxNumTxsPerBatch int |
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} |
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var ( |
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utxoPoolMutex sync.Mutex |
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setting txGenSettings |
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btcTXIter btctxiter.BTCTXIterator |
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) |
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type TxInfo struct { |
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// Global Input
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shardID int |
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dataNodes []*node.Node |
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// Temp Input
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id [32]byte |
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index int |
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value int |
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address string |
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// Output
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txs []*blockchain.Transaction |
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crossTxs []*blockchain.Transaction |
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txCount int |
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} |
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// Generates at most "maxNumTxs" number of simulated transactions based on the current UtxoPools of all shards.
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// The transactions are generated by going through the existing utxos and
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// randomly select a subset of them as the input for each new transaction. The output
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// address of the new transaction are randomly selected from [0 - N), where N is the total number of fake addresses.
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//
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// When crossShard=true, besides the selected utxo input, select another valid utxo as input from the same address in a second shard.
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// Similarly, generate another utxo output in that second shard.
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//
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// NOTE: the genesis block should contain N coinbase transactions which add
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// token (1000) to each address in [0 - N). See node.AddTestingAddresses()
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//
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// Params:
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// shardID - the shardID for current shard
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// dataNodes - nodes containing utxopools of all shards
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// Returns:
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// all single-shard txs
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// all cross-shard txs
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func generateSimulatedTransactions(shardID int, dataNodes []*node.Node) ([]*blockchain.Transaction, []*blockchain.Transaction) { |
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/* |
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UTXO map structure: |
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address - [ |
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txId1 - [ |
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outputIndex1 - value1 |
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outputIndex2 - value2 |
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] |
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txId2 - [ |
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outputIndex1 - value1 |
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outputIndex2 - value2 |
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] |
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] |
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*/ |
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utxoPoolMutex.Lock() |
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txInfo := TxInfo{} |
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txInfo.shardID = shardID |
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txInfo.dataNodes = dataNodes |
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txInfo.txCount = 0 |
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UTXOLOOP: |
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// Loop over all addresses
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for address, txMap := range dataNodes[shardID].UtxoPool.UtxoMap { |
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txInfo.address = address |
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// Loop over all txIds for the address
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for txIdStr, utxoMap := range txMap { |
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// Parse TxId
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id, err := hex.DecodeString(txIdStr) |
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if err != nil { |
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continue |
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} |
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copy(txInfo.id[:], id[:]) |
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// Loop over all utxos for the txId
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for index, value := range utxoMap { |
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txInfo.index = index |
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txInfo.value = value |
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randNum := rand.Intn(100) |
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// 30% sample rate to select UTXO to use for new transactions
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if randNum >= 30 { |
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continue |
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} |
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generateSingleShardTx(&txInfo) |
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if txInfo.txCount >= setting.maxNumTxsPerBatch { |
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break UTXOLOOP |
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} |
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} |
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} |
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} |
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utxoPoolMutex.Unlock() |
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log.Debug("[Generator] generated transations", "single-shard", len(txInfo.txs), "cross-shard", len(txInfo.crossTxs)) |
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return txInfo.txs, txInfo.crossTxs |
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} |
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func generateSingleShardTx(txInfo *TxInfo) { |
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// nodeShardID := txInfo.dataNodes[txInfo.shardID].Consensus.ShardID
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// blk := btcTXIter.IterateBTCTX()
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// Add the utxo as new tx input
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// txin := blockchain.TXInput{txInfo.id, txInfo.index, txInfo.address, nodeShardID}
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// // Spend the utxo to a random address in [0 - N)
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// txout := blockchain.TXOutput{txInfo.value, strconv.Itoa(rand.Intn(setting.numOfAddress)), nodeShardID}
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// tx := blockchain.Transaction{[32]byte{}, []blockchain.TXInput{txin}, []blockchain.TXOutput{txout}, nil}
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// tx.SetID()
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// txInfo.txs = append(txInfo.txs, &tx)
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txInfo.txCount++ |
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} |
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// A utility func that counts the total number of utxos in a pool.
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func countNumOfUtxos(utxoPool *blockchain.UTXOPool) int { |
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countAll := 0 |
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for _, utxoMap := range utxoPool.UtxoMap { |
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for txIdStr, val := range utxoMap { |
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_ = val |
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id, err := hex.DecodeString(txIdStr) |
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if err != nil { |
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continue |
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} |
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txId := [32]byte{} |
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copy(txId[:], id[:]) |
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for _, utxo := range val { |
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_ = utxo |
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countAll++ |
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} |
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} |
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} |
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return countAll |
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} |
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func main() { |
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configFile := flag.String("config_file", "local_config.txt", "file containing all ip addresses and config") |
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maxNumTxsPerBatch := flag.Int("max_num_txs_per_batch", 100000, "number of transactions to send per message") |
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logFolder := flag.String("log_folder", "latest", "the folder collecting the logs of this execution") |
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flag.Parse() |
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// Read the configs
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config, _ := configr.ReadConfigFile(*configFile) |
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leaders, shardIds := configr.GetLeadersAndShardIds(&config) |
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setting.numOfAddress = 10000 |
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// Do cross shard tx if there are more than one shard
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setting.crossShard = len(shardIds) > 1 |
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setting.maxNumTxsPerBatch = *maxNumTxsPerBatch |
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// TODO(Richard): refactor this chuck to a single method
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// Setup a logger to stdout and log file.
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logFileName := fmt.Sprintf("./%v/txgen.log", *logFolder) |
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h := log.MultiHandler( |
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log.StdoutHandler, |
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log.Must.FileHandler(logFileName, log.LogfmtFormat()), // Log to file
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// log.Must.NetHandler("tcp", ":3000", log.JSONFormat()) // Log to remote
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) |
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log.Root().SetHandler(h) |
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btcTXIter.Init() |
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// Nodes containing utxopools to mirror the shards' data in the network
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nodes := []*node.Node{} |
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for _, shardId := range shardIds { |
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node := node.New(&consensus.Consensus{ShardID: shardId}) |
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// // Assign many fake addresses so we have enough address to play with at first
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// node.AddTestingAddresses(setting.numOfAddress)
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nodes = append(nodes, node) |
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} |
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// Client/txgenerator server node setup
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clientPort := configr.GetClientPort(&config) |
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consensusObj := consensus.NewConsensus("0", clientPort, "0", nil, p2p.Peer{}) |
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clientNode := node.New(consensusObj) |
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if clientPort != "" { |
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clientNode.Client = client.NewClient(&leaders) |
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// This func is used to update the client's utxopool when new blocks are received from the leaders
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updateBlocksFunc := func(blocks []*blockchain.Block) { |
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log.Debug("Received new block from leader", "len", len(blocks)) |
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for _, block := range blocks { |
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for _, node := range nodes { |
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if node.Consensus.ShardID == block.ShardId { |
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log.Debug("Adding block from leader", "shardId", block.ShardId) |
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// Add it to blockchain
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utxoPoolMutex.Lock() |
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node.AddNewBlock(block) |
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utxoPoolMutex.Unlock() |
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} else { |
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continue |
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} |
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} |
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} |
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} |
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clientNode.Client.UpdateBlocks = updateBlocksFunc |
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// Start the client server to listen to leader's message
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go func() { |
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clientNode.StartServer(clientPort) |
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}() |
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} |
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// Transaction generation process
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time.Sleep(10 * time.Second) // wait for nodes to be ready
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start := time.Now() |
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totalTime := 300.0 //run for 5 minutes
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for true { |
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t := time.Now() |
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if t.Sub(start).Seconds() >= totalTime { |
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log.Debug("Generator timer ended.", "duration", (int(t.Sub(start))), "startTime", start, "totalTime", totalTime) |
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break |
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} |
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allCrossTxs := []*blockchain.Transaction{} |
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// Generate simulated transactions
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for i, leader := range leaders { |
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txs, crossTxs := generateSimulatedTransactions(i, nodes) |
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allCrossTxs = append(allCrossTxs, crossTxs...) |
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log.Debug("[Generator] Sending single-shard txs ...", "leader", leader, "numTxs", len(txs), "numCrossTxs", len(crossTxs)) |
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msg := node.ConstructTransactionListMessage(txs) |
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p2p.SendMessage(leader, msg) |
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// Note cross shard txs are later sent in batch
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} |
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if len(allCrossTxs) > 0 { |
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log.Debug("[Generator] Broadcasting cross-shard txs ...", "allCrossTxs", len(allCrossTxs)) |
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msg := node.ConstructTransactionListMessage(allCrossTxs) |
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p2p.BroadcastMessage(leaders, msg) |
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// Put cross shard tx into a pending list waiting for proofs from leaders
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if clientPort != "" { |
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clientNode.Client.PendingCrossTxsMutex.Lock() |
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for _, tx := range allCrossTxs { |
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clientNode.Client.PendingCrossTxs[tx.ID] = tx |
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} |
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clientNode.Client.PendingCrossTxsMutex.Unlock() |
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} |
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} |
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time.Sleep(500 * time.Millisecond) // Send a batch of transactions periodically
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} |
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// Send a stop message to stop the nodes at the end
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msg := node.ConstructStopMessage() |
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peers := append(configr.GetValidators(*configFile), leaders...) |
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p2p.BroadcastMessage(peers, msg) |
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} |
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@ -0,0 +1,38 @@ |
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package btctxiter |
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import ( |
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"log" |
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"github.com/piotrnar/gocoin/lib/btc" |
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"github.com/piotrnar/gocoin/lib/others/blockdb" |
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) |
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type BTCTXIterator struct { |
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index int |
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blockDatabase *blockdb.BlockDB |
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} |
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func (iter *BTCTXIterator) Init() { |
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// Set real Bitcoin network
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Magic := [4]byte{0xF9, 0xBE, 0xB4, 0xD9} |
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// Specify blocks directory
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iter.blockDatabase = blockdb.NewBlockDB("/Users/ricl/Library/Application Support/Bitcoin/blocks", Magic) |
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iter.index = -1 |
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} |
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func (iter *BTCTXIterator) IterateBTCTX() *btc.Block { |
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iter.index++ |
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dat, err := iter.blockDatabase.FetchNextBlock() |
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if dat == nil || err != nil { |
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log.Println("END of DB file") |
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} |
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blk, err := btc.NewBlock(dat[:]) |
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if err != nil { |
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println("Block inconsistent:", err.Error()) |
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} |
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blk.BuildTxList() |
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return blk |
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} |
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