feat(discovery): add UniswapV3 pool discovery - 41 pools found!
- Created uniswap_v3_pools.go with V3 factory integration - Discovers pools across all fee tiers (0.01%, 0.05%, 0.3%, 1%) - Updated main.go to discover both V2 and V3 pools - Total pools now: 9 V2 + 41 V3 = 50 pools Results on Arbitrum mainnet: - V2 discovery: 9 pools in 5s - V3 discovery: 41 pools in 38s - Bot now scanning 50 pools for cross-protocol arbitrage Note: Arbitrage detector needs update to handle V3 sqrtPriceX96 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude <noreply@anthropic.com>
This commit is contained in:
Gemini Agent
231
pkg/discovery/uniswap_v3_pools.go
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231
pkg/discovery/uniswap_v3_pools.go
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package discovery
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import (
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"context"
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"fmt"
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"math/big"
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"strings"
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"github.com/ethereum/go-ethereum"
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"github.com/ethereum/go-ethereum/accounts/abi"
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"github.com/ethereum/go-ethereum/common"
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"github.com/ethereum/go-ethereum/ethclient"
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"coppertone.tech/fraktal/mev-bot/pkg/cache"
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"coppertone.tech/fraktal/mev-bot/pkg/types"
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)
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// UniswapV3FactoryAddress is the Uniswap V3 factory on Arbitrum
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var UniswapV3FactoryAddress = common.HexToAddress("0x1F98431c8aD98523631AE4a59f267346ea31F984")
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// V3 fee tiers (in hundredths of a bip, i.e., 500 = 0.05%)
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var V3FeeTiers = []uint32{100, 500, 3000, 10000}
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// UniswapV3PoolDiscovery discovers and populates UniswapV3 pools
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type UniswapV3PoolDiscovery struct {
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client *ethclient.Client
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poolCache cache.PoolCache
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factoryAddr common.Address
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factoryABI abi.ABI
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poolABI abi.ABI
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}
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// NewUniswapV3PoolDiscovery creates a new V3 pool discovery instance
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func NewUniswapV3PoolDiscovery(client *ethclient.Client, poolCache cache.PoolCache) (*UniswapV3PoolDiscovery, error) {
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if client == nil {
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return nil, fmt.Errorf("client cannot be nil")
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}
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if poolCache == nil {
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return nil, fmt.Errorf("pool cache cannot be nil")
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}
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// Define minimal factory ABI for getPool function
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factoryABI, err := abi.JSON(strings.NewReader(`[{"inputs":[{"internalType":"address","name":"","type":"address"},{"internalType":"address","name":"","type":"address"},{"internalType":"uint24","name":"","type":"uint24"}],"name":"getPool","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"}]`))
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if err != nil {
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return nil, fmt.Errorf("failed to parse factory ABI: %w", err)
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}
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// Define minimal pool ABI
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poolABI, err := abi.JSON(strings.NewReader(`[
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{"inputs":[],"name":"token0","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},
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{"inputs":[],"name":"token1","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},
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{"inputs":[],"name":"fee","outputs":[{"internalType":"uint24","name":"","type":"uint24"}],"stateMutability":"view","type":"function"},
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{"inputs":[],"name":"tickSpacing","outputs":[{"internalType":"int24","name":"","type":"int24"}],"stateMutability":"view","type":"function"},
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{"inputs":[],"name":"slot0","outputs":[{"internalType":"uint160","name":"sqrtPriceX96","type":"uint160"},{"internalType":"int24","name":"tick","type":"int24"},{"internalType":"uint16","name":"observationIndex","type":"uint16"},{"internalType":"uint16","name":"observationCardinality","type":"uint16"},{"internalType":"uint16","name":"observationCardinalityNext","type":"uint16"},{"internalType":"uint8","name":"feeProtocol","type":"uint8"},{"internalType":"bool","name":"unlocked","type":"bool"}],"stateMutability":"view","type":"function"},
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{"inputs":[],"name":"liquidity","outputs":[{"internalType":"uint128","name":"","type":"uint128"}],"stateMutability":"view","type":"function"}
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]`))
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if err != nil {
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return nil, fmt.Errorf("failed to parse pool ABI: %w", err)
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}
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return &UniswapV3PoolDiscovery{
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client: client,
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poolCache: poolCache,
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factoryAddr: UniswapV3FactoryAddress,
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factoryABI: factoryABI,
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poolABI: poolABI,
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}, nil
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}
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// DiscoverMajorPools discovers V3 pools for major token pairs across all fee tiers
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func (d *UniswapV3PoolDiscovery) DiscoverMajorPools(ctx context.Context) (int, error) {
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discovered := 0
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for _, pair := range MajorTokenPairs {
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token0 := pair[0]
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token1 := pair[1]
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// Try all fee tiers
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for _, fee := range V3FeeTiers {
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poolAddr, err := d.getPoolAddress(ctx, token0, token1, fee)
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if err != nil {
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// Skip silently - pool may not exist for this fee tier
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continue
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}
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if poolAddr == (common.Address{}) {
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continue
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}
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poolInfo, err := d.fetchPoolInfo(ctx, poolAddr)
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if err != nil {
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// Pool exists but failed to fetch info - skip
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continue
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}
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// Skip pools with zero liquidity
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if poolInfo.Liquidity == nil || poolInfo.Liquidity.Cmp(big.NewInt(0)) == 0 {
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continue
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}
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if err := d.poolCache.Add(ctx, poolInfo); err != nil {
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// Already exists - not an error
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continue
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}
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discovered++
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}
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}
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return discovered, nil
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}
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// getPoolAddress queries the V3 factory for a pool address
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func (d *UniswapV3PoolDiscovery) getPoolAddress(ctx context.Context, token0, token1 common.Address, fee uint32) (common.Address, error) {
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// ABI expects *big.Int for uint24
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feeBig := big.NewInt(int64(fee))
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data, err := d.factoryABI.Pack("getPool", token0, token1, feeBig)
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if err != nil {
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return common.Address{}, err
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}
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msg := ethereum.CallMsg{
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To: &d.factoryAddr,
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Data: data,
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}
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result, err := d.client.CallContract(ctx, msg, nil)
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if err != nil {
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return common.Address{}, err
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}
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var poolAddr common.Address
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err = d.factoryABI.UnpackIntoInterface(&poolAddr, "getPool", result)
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if err != nil {
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return common.Address{}, err
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}
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return poolAddr, nil
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}
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// fetchPoolInfo fetches detailed information about a V3 pool
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func (d *UniswapV3PoolDiscovery) fetchPoolInfo(ctx context.Context, poolAddr common.Address) (*types.PoolInfo, error) {
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// Fetch token0
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token0Data, _ := d.poolABI.Pack("token0")
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token0Result, err := d.client.CallContract(ctx, ethereum.CallMsg{To: &poolAddr, Data: token0Data}, nil)
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if err != nil {
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return nil, err
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}
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var token0 common.Address
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d.poolABI.UnpackIntoInterface(&token0, "token0", token0Result)
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// Fetch token1
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token1Data, _ := d.poolABI.Pack("token1")
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token1Result, err := d.client.CallContract(ctx, ethereum.CallMsg{To: &poolAddr, Data: token1Data}, nil)
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if err != nil {
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return nil, err
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}
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var token1 common.Address
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d.poolABI.UnpackIntoInterface(&token1, "token1", token1Result)
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// Fetch fee
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feeData, _ := d.poolABI.Pack("fee")
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feeResult, err := d.client.CallContract(ctx, ethereum.CallMsg{To: &poolAddr, Data: feeData}, nil)
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if err != nil {
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return nil, err
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}
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var fee struct {
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Fee uint32
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}
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d.poolABI.UnpackIntoInterface(&fee, "fee", feeResult)
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// Fetch tickSpacing
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tsData, _ := d.poolABI.Pack("tickSpacing")
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tsResult, err := d.client.CallContract(ctx, ethereum.CallMsg{To: &poolAddr, Data: tsData}, nil)
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if err != nil {
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return nil, err
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}
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var tickSpacing struct {
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Spacing int32
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}
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d.poolABI.UnpackIntoInterface(&tickSpacing, "tickSpacing", tsResult)
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// Fetch slot0 (sqrtPriceX96, tick)
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slot0Data, _ := d.poolABI.Pack("slot0")
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slot0Result, err := d.client.CallContract(ctx, ethereum.CallMsg{To: &poolAddr, Data: slot0Data}, nil)
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if err != nil {
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return nil, err
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}
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var slot0 struct {
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SqrtPriceX96 *big.Int
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Tick int32
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ObservationIndex uint16
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ObservationCardinality uint16
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ObservationCardinalityNext uint16
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FeeProtocol uint8
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Unlocked bool
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}
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d.poolABI.UnpackIntoInterface(&slot0, "slot0", slot0Result)
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// Fetch liquidity
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liqData, _ := d.poolABI.Pack("liquidity")
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liqResult, err := d.client.CallContract(ctx, ethereum.CallMsg{To: &poolAddr, Data: liqData}, nil)
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if err != nil {
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return nil, err
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}
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var liq struct {
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Liquidity *big.Int
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}
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d.poolABI.UnpackIntoInterface(&liq, "liquidity", liqResult)
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// Get decimals
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token0Decimals := getTokenDecimals(token0)
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token1Decimals := getTokenDecimals(token1)
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tick := slot0.Tick
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poolInfo := &types.PoolInfo{
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Address: poolAddr,
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Protocol: types.ProtocolUniswapV3,
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Token0: token0,
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Token1: token1,
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Token0Decimals: token0Decimals,
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Token1Decimals: token1Decimals,
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Fee: fee.Fee,
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TickSpacing: tickSpacing.Spacing,
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SqrtPriceX96: slot0.SqrtPriceX96,
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Tick: &tick,
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Liquidity: liq.Liquidity,
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}
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return poolInfo, nil
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}
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