Richard Liu
6 years ago
commit
780fedaec4
@ -0,0 +1,293 @@ |
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/* |
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The btctxgen iterates the btc tx history block by block, transaction by transaction. |
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The btxtxiter provide a simple api called `NextTx` for us to move thru TXs one by one. |
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Same as txgen, iterate on each shard to generate simulated TXs (GenerateSimulatedTransactions): |
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1. Get a new btc tx |
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2. If it's a coinbase tx, create a corresponding coinbase tx in our blockchain |
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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. |
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Same as txgen, send single shard tx shard by shard, then broadcast cross shard tx. |
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TODO |
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Some todos for ricl |
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* correct the logic to outputing to one of the input shard, rather than the current shard |
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*/ |
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package main |
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import ( |
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"flag" |
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"fmt" |
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"sync" |
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"time" |
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"github.com/simple-rules/harmony-benchmark/blockchain" |
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"github.com/simple-rules/harmony-benchmark/client" |
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"github.com/simple-rules/harmony-benchmark/client/btctxiter" |
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client_config "github.com/simple-rules/harmony-benchmark/client/config" |
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"github.com/simple-rules/harmony-benchmark/consensus" |
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"github.com/simple-rules/harmony-benchmark/crypto/pki" |
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"github.com/simple-rules/harmony-benchmark/log" |
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"github.com/simple-rules/harmony-benchmark/node" |
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"github.com/simple-rules/harmony-benchmark/p2p" |
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proto_node "github.com/simple-rules/harmony-benchmark/proto/node" |
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) |
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type txGenSettings struct { |
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crossShard bool |
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maxNumTxsPerBatch int |
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} |
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type TXRef struct { |
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txID [32]byte |
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shardID uint32 |
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toAddress [20]byte // we use the same toAddress in btc and hmy
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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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iter btctxiter.BTCTXIterator |
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utxoMapping map[string]TXRef // btcTXID to { txID, shardID }
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// map from bitcoin address to a int value (the privKey in hmy)
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addressMapping map[[20]byte]int |
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currentInt int |
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) |
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func getHmyInt(btcAddr [20]byte) int { |
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var privKey int |
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if privKey, ok := addressMapping[btcAddr]; !ok { // If cannot find key
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privKey = currentInt |
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addressMapping[btcAddr] = privKey |
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currentInt++ |
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} |
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return privKey |
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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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{ |
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address: { |
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txID: { |
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outputIndex: value |
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} |
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} |
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} |
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*/ |
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utxoPoolMutex.Lock() |
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txs := []*blockchain.Transaction{} |
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crossTxs := []*blockchain.Transaction{} |
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nodeShardID := dataNodes[shardID].Consensus.ShardID |
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cnt := 0 |
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LOOP: |
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for { |
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btcTx := iter.NextTx() |
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if btcTx == nil { |
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log.Error("Failed to parse tx", "height", iter.GetBlockIndex()) |
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} |
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tx := blockchain.Transaction{} |
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isCrossShardTx := false |
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if btctxiter.IsCoinBaseTx(btcTx) { |
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// ricl: coinbase tx should just have one txo
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btcTXO := btcTx.Vout[0] |
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btcTXOAddr := btcTXO.ScriptPubKey.Addresses[0] |
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var toAddress [20]byte |
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copy(toAddress[:], btcTXOAddr) // TODO(ricl): string to [20]byte
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hmyInt := getHmyInt(toAddress) |
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tx = *blockchain.NewCoinbaseTX(pki.GetAddressFromInt(hmyInt), "", nodeShardID) |
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utxoMapping[btcTx.Hash] = TXRef{tx.ID, nodeShardID, toAddress} |
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} else { |
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var btcFromAddresses [][20]byte |
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for _, btcTXI := range btcTx.Vin { |
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btcTXIDStr := btcTXI.Txid |
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txRef := utxoMapping[btcTXIDStr] // find the corresponding harmony tx info
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if txRef.shardID != nodeShardID { |
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isCrossShardTx = true |
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} |
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tx.TxInput = append(tx.TxInput, *blockchain.NewTXInput(blockchain.NewOutPoint(&txRef.txID, btcTXI.Vout), [20]byte{}, txRef.shardID)) |
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// Add the from address to array, so that we can later use it to sign the tx.
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btcFromAddresses = append(btcFromAddresses, txRef.toAddress) |
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} |
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for _, btcTXO := range btcTx.Vout { |
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for _, btcTXOAddr := range btcTXO.ScriptPubKey.Addresses { |
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var toAddress [20]byte |
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copy(toAddress[:], btcTXOAddr) //TODO(ricl): string to [20]byte
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txo := blockchain.TXOutput{Amount: int(btcTXO.Value), Address: toAddress, ShardID: nodeShardID} |
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tx.TxOutput = append(tx.TxOutput, txo) |
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utxoMapping[btcTx.Txid] = TXRef{tx.ID, nodeShardID, toAddress} |
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} |
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} |
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// get private key and sign the tx
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for _, btcFromAddress := range btcFromAddresses { |
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hmyInt := getHmyInt(btcFromAddress) |
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tx.SetID() // TODO(RJ): figure out the correct way to set Tx ID.
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tx.Sign(pki.GetPrivateKeyScalarFromInt(hmyInt)) |
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} |
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} |
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if isCrossShardTx { |
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crossTxs = append(crossTxs, &tx) |
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} else { |
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txs = append(txs, &tx) |
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} |
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// 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)
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cnt++ |
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if cnt >= setting.maxNumTxsPerBatch { |
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break LOOP |
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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(txs), "cross-shard", len(crossTxs)) |
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return txs, crossTxs |
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} |
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func initClient(clientNode *node.Node, clientPort string, shardIDLeaderMap *map[uint32]p2p.Peer, nodes *[]*node.Node) { |
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if clientPort == "" { |
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return |
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} |
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clientNode.Client = client.NewClient(shardIDLeaderMap) |
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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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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", 10000, "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 := client_config.NewConfig() |
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config.ReadConfigFile(*configFile) |
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shardIDLeaderMap := config.GetShardIDToLeaderMap() |
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// Do cross shard tx if there are more than one shard
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setting.crossShard = len(shardIDLeaderMap) > 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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iter.Init() |
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utxoMapping = make(map[string]TXRef) |
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addressMapping = make(map[[20]byte]int) |
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currentInt = 1 // start from address 1
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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 shardIDLeaderMap { |
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node := node.New(&consensus.Consensus{ShardID: shardID}, nil) |
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// Assign many fake addresses so we have enough address to play with at first
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node.AddTestingAddresses(10000) |
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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 := config.GetClientPort() |
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consensusObj := consensus.NewConsensus("0", clientPort, "0", nil, p2p.Peer{}) |
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clientNode := node.New(consensusObj, nil) |
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initClient(clientNode, clientPort, &shardIDLeaderMap, &nodes) |
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// Transaction generation process
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time.Sleep(3 * time.Second) // wait for nodes to be ready
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leaders := []p2p.Peer{} |
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for _, leader := range shardIDLeaderMap { |
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leaders = append(leaders, leader) |
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} |
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for { |
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allCrossTxs := []*blockchain.Transaction{} |
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// Generate simulated transactions
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for shardID, leader := range shardIDLeaderMap { |
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txs, crossTxs := generateSimulatedTransactions(int(shardID), 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), "block height", iter.GetBlockIndex()) |
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msg := proto_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 := proto_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 := proto_node.ConstructStopMessage() |
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peers := append(config.GetValidators(), leaders...) |
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p2p.BroadcastMessage(peers, msg) |
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} |
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