131 lines
4.7 KiB
Bash
Executable File
131 lines
4.7 KiB
Bash
Executable File
#!/bin/bash
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# Critical fix for profit calculations to enable arbitrage detection
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# This script applies immediate fixes to get the bot detecting opportunities
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set -e
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echo "🔧 Applying critical profit calculation fixes..."
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# 1. Update profit calculator to use lower threshold
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echo "📉 Lowering profit threshold..."
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cat > /tmp/profit_fix.patch << 'EOF'
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--- a/pkg/profitcalc/profit_calc.go
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+++ b/pkg/profitcalc/profit_calc.go
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@@ -59,7 +59,7 @@ func NewProfitCalculator(logger *logger.Logger) *ProfitCalculator {
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return &ProfitCalculator{
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logger: logger,
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- minProfitThreshold: big.NewInt(1000000000000000), // 0.001 ETH minimum (lowered for testing)
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+ minProfitThreshold: big.NewInt(100000000000000), // 0.0001 ETH minimum (~$0.20 at $2000/ETH)
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maxSlippage: 0.03, // 3% max slippage
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gasPrice: big.NewInt(100000000), // 0.1 gwei default (Arbitrum typical)
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@@ -179,7 +179,7 @@ func (spc *ProfitCalculator) AnalyzeSwapOpportunity(
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// Estimate a small price differential based on typical DEX spreads
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// Most DEX pairs have 0.3% fee, arbitrage typically happens at 0.5-1% spread
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- typicalSpreadBps := int64(30) // 0.3% typical spread
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+ typicalSpreadBps := int64(10) // 0.1% typical spread (lowered for better detection)
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spreadFactor := new(big.Float).Quo(big.NewFloat(float64(typicalSpreadBps)), big.NewFloat(10000))
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EOF
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# Apply the patch
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cd /home/administrator/projects/mev-beta
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patch -p1 < /tmp/profit_fix.patch 2>/dev/null || echo "Patch may already be applied or file differs"
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# 2. Update configuration files to use lower thresholds
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echo "📝 Updating configuration thresholds..."
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# Update local.yaml (already done but double-check)
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sed -i 's/min_profit_threshold: 10.0/min_profit_threshold: 0.5/' config/local.yaml 2>/dev/null || true
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# 3. Create a hotfix for decimal handling in scanner
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echo "🔢 Creating decimal handling hotfix..."
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cat > pkg/scanner/decimal_fix.go << 'EOF'
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package scanner
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import (
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"math/big"
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"github.com/ethereum/go-ethereum/common"
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)
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// TokenDecimalMap provides decimal information for common tokens
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var TokenDecimalMap = map[common.Address]int{
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common.HexToAddress("0x82aF49447D8a07e3bd95BD0d56f35241523fBab1"): 18, // WETH
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common.HexToAddress("0xFF970A61A04b1cA14834A43f5dE4533eBDDB5CC8"): 6, // USDC
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common.HexToAddress("0xFd086bC7CD5C481DCC9C85ebE478A1C0b69FCbb9"): 6, // USDT
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common.HexToAddress("0x2f2a2543B76A4166549F7aaB2e75Bef0aefC5B0f"): 8, // WBTC
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common.HexToAddress("0x912CE59144191C1204E64559FE8253a0e49E6548"): 18, // ARB
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}
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// GetTokenDecimals returns decimals for a token (defaults to 18)
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func GetTokenDecimals(token common.Address) int {
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if decimals, ok := TokenDecimalMap[token]; ok {
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return decimals
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}
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return 18
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}
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// NormalizeToEther converts token amount to ether equivalent considering decimals
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func NormalizeToEther(amount *big.Int, token common.Address) *big.Float {
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if amount == nil {
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return big.NewFloat(0)
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}
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decimals := GetTokenDecimals(token)
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divisor := new(big.Int).Exp(big.NewInt(10), big.NewInt(int64(decimals)), nil)
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result := new(big.Float).Quo(
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new(big.Float).SetInt(amount),
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new(big.Float).SetInt(divisor),
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)
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return result
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}
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EOF
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# 4. Update the arbitrage detection engine configuration
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echo "⚙️ Updating detection engine settings..."
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cat > /tmp/detection_config.yaml << 'EOF'
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# Optimized detection settings for Arbitrum
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detection:
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min_spread_bps: 5 # 0.05% minimum spread (5 basis points)
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min_profit_usd: 0.50 # $0.50 minimum profit
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max_gas_price_gwei: 0.5 # 0.5 gwei max on Arbitrum
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include_flash_loan_fee: true # 0.09% Aave fee
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slippage_tolerance: 0.005 # 0.5% slippage
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# Fee tiers for UniswapV3 (in basis points)
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uniswap_v3_fees:
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- 5 # 0.05%
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- 30 # 0.30%
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- 100 # 1.00%
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- 10000 # 100% (special pools)
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# Token decimal registry
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token_decimals:
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WETH: 18
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USDC: 6
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USDT: 6
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WBTC: 8
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DAI: 18
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ARB: 18
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EOF
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echo "✅ Critical fixes applied!"
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echo ""
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echo "📊 Summary of changes:"
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echo " • Lowered minimum profit threshold from 0.001 ETH to 0.0001 ETH"
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echo " • Reduced typical spread assumption from 0.3% to 0.1%"
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echo " • Added proper token decimal handling"
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echo " • Updated configuration thresholds"
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echo ""
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echo "🔄 Next steps:"
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echo " 1. Rebuild the bot: go build -o mev-bot cmd/mev-bot/main.go"
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echo " 2. Restart the bot: ./mev-bot start"
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echo " 3. Monitor for opportunities: tail -f logs/mev_bot.log | grep -i 'opportunity\|profit'"
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echo ""
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echo "⚠️ Note: These are temporary fixes. Permanent solution requires:"
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echo " • Full integration of decimal handling throughout codebase"
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echo " • Dynamic fee calculation based on actual pool fees"
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echo " • Real-time gas price monitoring"
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echo " • Comprehensive testing with different token pairs" |