From 4c2f90f16c1322ba42ceadf53874c1beee749e29 Mon Sep 17 00:00:00 2001 From: Mohammed Sohail Date: Wed, 23 Nov 2022 12:48:52 +0300 Subject: [PATCH] init: PoC * only supports legacy transactions --- cmd/gorge.go | 45 +++++++++++++ cmd/trace.go | 12 ++++ go.mod | 34 ++++++++++ go.sum | 162 +++++++++++++++++++++++++++++++++++++++++++++ pkg/block/block.go | 40 +++++++++++ pkg/block/fetch.go | 92 +++++++++++++++++++++++++ 6 files changed, 385 insertions(+) create mode 100644 cmd/gorge.go create mode 100644 cmd/trace.go create mode 100644 go.mod create mode 100644 go.sum create mode 100644 pkg/block/block.go create mode 100644 pkg/block/fetch.go diff --git a/cmd/gorge.go b/cmd/gorge.go new file mode 100644 index 0000000..c0477a3 --- /dev/null +++ b/cmd/gorge.go @@ -0,0 +1,45 @@ +package main + +import ( + "context" + "encoding/json" + "io/ioutil" + "log" + "math/big" + "time" + + "git.grassecon.net/chaintool/gorge/pkg/block" + "github.com/ethereum/go-ethereum/core/types" + "github.com/lmittmann/w3" +) + +func main() { + client := w3.MustDial("https://rpc.ankr.com/eth") + defer client.Close() + + defer traceExecTime(time.Now()) + blockFetcher := block.NewBlockFetcher(block.BlockFetcherOpts{ + W3Client: client, + Signer: types.NewEIP155Signer(big.NewInt(1)), + }) + + ctx, cancel := context.WithTimeout(context.Background(), time.Second*5) + defer cancel() + + // https://etherscan.io/block/16031266 + res, err := blockFetcher.FetchBlock(ctx, big.NewInt(5000000)) + if err != nil { + log.Fatalf("Could not fetch block: %v", err) + } + + resJson, err := json.Marshal(res) + if err != nil { + log.Fatalf("json.Marshal failed: %v", err) + } + + if err := ioutil.WriteFile("block.json", resJson, 0644); err != nil { + log.Fatalf("Write file failed: %v", err) + } + + log.Printf("Block successfully obtained") +} diff --git a/cmd/trace.go b/cmd/trace.go new file mode 100644 index 0000000..f3e3132 --- /dev/null +++ b/cmd/trace.go @@ -0,0 +1,12 @@ +package main + +import ( + "log" + "time" +) + +func traceExecTime(start time.Time) { + elapsed := time.Since(start) + + log.Printf("Exec time: %s", elapsed) +} diff --git a/go.mod b/go.mod new file mode 100644 index 0000000..499ccae --- /dev/null +++ b/go.mod @@ -0,0 +1,34 @@ +module git.grassecon.net/chaintool/gorge + +go 1.19 + +require ( + github.com/StackExchange/wmi v1.2.1 // indirect + github.com/VictoriaMetrics/fastcache v1.12.0 // indirect + github.com/btcsuite/btcd/btcec/v2 v2.3.2 // indirect + github.com/cespare/xxhash/v2 v2.1.2 // indirect + github.com/deckarep/golang-set v1.8.0 // indirect + github.com/decred/dcrd/dcrec/secp256k1/v4 v4.1.0 // indirect + github.com/ethereum/go-ethereum v1.10.26 // indirect + github.com/go-ole/go-ole v1.2.6 // indirect + github.com/go-stack/stack v1.8.1 // indirect + github.com/golang/snappy v0.0.4 // indirect + github.com/gorilla/websocket v1.5.0 // indirect + github.com/hashicorp/golang-lru v0.5.5-0.20210104140557-80c98217689d // indirect + github.com/holiman/bloomfilter/v2 v2.0.3 // indirect + github.com/holiman/uint256 v1.2.1 // indirect + github.com/lmittmann/w3 v0.10.0 // indirect + github.com/mattn/go-runewidth v0.0.14 // indirect + github.com/olekukonko/tablewriter v0.0.5 // indirect + github.com/pkg/errors v0.9.1 // indirect + github.com/prometheus/tsdb v0.10.0 // indirect + github.com/rivo/uniseg v0.4.3 // indirect + github.com/shirou/gopsutil v3.21.11+incompatible // indirect + github.com/syndtr/goleveldb v1.0.1-0.20210819022825-2ae1ddf74ef7 // indirect + github.com/tklauser/go-sysconf v0.3.11 // indirect + github.com/tklauser/numcpus v0.6.0 // indirect + github.com/yusufpapurcu/wmi v1.2.2 // indirect + golang.org/x/crypto v0.3.0 // indirect + golang.org/x/sys v0.2.0 // indirect + gopkg.in/natefinch/npipe.v2 v2.0.0-20160621034901-c1b8fa8bdcce // indirect +) diff --git a/go.sum b/go.sum new file mode 100644 index 0000000..d91e0d5 --- /dev/null +++ b/go.sum @@ -0,0 +1,162 @@ +github.com/OneOfOne/xxhash 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h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI= diff --git a/pkg/block/block.go b/pkg/block/block.go new file mode 100644 index 0000000..0a0b7da --- /dev/null +++ b/pkg/block/block.go @@ -0,0 +1,40 @@ +package block + +import ( + "math/big" + + "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/core/types" +) + +type FetchResponse struct { + Block MinimalBlock `json:"block"` + TransactionsCount int `json:"transactionsCount"` + Transactions []MinimalTransaction `json:"transactions"` +} + +type MinimalBlock struct { + Hash common.Hash `json:"hash"` + Number *big.Int `json:"number"` + Bloom types.Bloom `json:"logsBloom"` + GasLimit uint64 `json:"gasLimit"` + GasUsed uint64 `json:"gasUsed"` + Time uint64 `json:"timestamp"` +} + +type MinimalTransaction struct { + Hash common.Hash `json:"hash"` + From common.Address `json:"from"` + To *common.Address `json:"to"` + Gas uint64 `json:"gas"` + GasPrice *big.Int `json:"gasPrice"` + Nonce uint64 `json:"nonce"` + Value *big.Int `json:"value"` + InputData string `json:"input"` + TransactionIndex uint `json:"transactionIndex"` + Status uint64 `json:"status"` + GasUsed uint64 `json:"gasUsed"` + Bloom types.Bloom `json:"logsBloom"` + Logs []*types.Log `json:"logs"` + ContractAddress common.Address `json:"contractAddress"` +} diff --git a/pkg/block/fetch.go b/pkg/block/fetch.go new file mode 100644 index 0000000..32d7fc9 --- /dev/null +++ b/pkg/block/fetch.go @@ -0,0 +1,92 @@ +package block + +import ( + "context" + "encoding/hex" + "math/big" + + "github.com/ethereum/go-ethereum/core/types" + "github.com/lmittmann/w3" + "github.com/lmittmann/w3/module/eth" + "github.com/lmittmann/w3/w3types" +) + +type BlockFetcherOpts struct { + W3Client *w3.Client + Signer types.Signer +} + +type BlockFetcher struct { + opts BlockFetcherOpts +} + +func NewBlockFetcher(o BlockFetcherOpts) *BlockFetcher { + return &BlockFetcher{o} +} + +func (bf *BlockFetcher) FetchBlock(ctx context.Context, blockNumber *big.Int) (*FetchResponse, error) { + var ( + block types.Block + ) + + if err := bf.opts.W3Client.CallCtx(ctx, eth.BlockByNumber(blockNumber).Returns(&block)); err != nil { + return &FetchResponse{}, err + } + + var ( + txsCount = len(block.Transactions()) + batchedCalls = make([]w3types.Caller, txsCount*2) + txs = make([]types.Transaction, txsCount) + receipts = make([]types.Receipt, txsCount) + minimalTxs = make([]MinimalTransaction, txsCount) + ) + + for i, block := range block.Transactions() { + batchedCalls[i] = eth.Tx(block.Hash()).Returns(&txs[i]) + batchedCalls[txsCount+i] = eth.TxReceipt(block.Hash()).Returns(&receipts[i]) + } + + if err := bf.opts.W3Client.CallCtx(ctx, batchedCalls...); err != nil { + return &FetchResponse{}, err + } + + fetchResponse := &FetchResponse{ + Block: MinimalBlock{ + Hash: block.Hash(), + Number: block.Number(), + Bloom: block.Bloom(), + GasLimit: block.GasLimit(), + GasUsed: block.GasUsed(), + Time: block.Time(), + }, + TransactionsCount: txsCount, + } + + for i := 0; i < txsCount; i++ { + msg, err := txs[i].AsMessage(bf.opts.Signer, nil) + if err != nil { + return &FetchResponse{}, err + } + + minimalTxs[i] = MinimalTransaction{ + Hash: txs[i].Hash(), + From: msg.From(), + To: msg.To(), + Gas: msg.Gas(), + GasPrice: msg.GasPrice(), + Nonce: msg.Nonce(), + Value: txs[i].Value(), + InputData: hex.EncodeToString(msg.Data()), + TransactionIndex: receipts[i].TransactionIndex, + Status: receipts[i].Status, + GasUsed: receipts[i].GasUsed, + Bloom: receipts[i].Bloom, + Logs: receipts[i].Logs, + ContractAddress: receipts[i].ContractAddress, + } + } + + fetchResponse.Transactions = minimalTxs + + return fetchResponse, nil +}