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Created complete V2 foundation infrastructure for modular MEV bot: Core Types (pkg/types/): - swap.go: SwapEvent with protocol support for 13+ DEXs - pool.go: PoolInfo with multi-index cache support - errors.go: Comprehensive error definitions - Full validation methods and helper functions - Proper decimal scaling (18 decimals internal representation) Parser Interface (pkg/parsers/): - Parser interface for protocol-specific implementations - Factory interface for routing and registration - Support for single log and full transaction parsing - SupportsLog() for dynamic protocol identification Cache Interface (pkg/cache/): - PoolCache interface with multi-index support - O(1) lookups by: address, token pair, protocol, liquidity - Add, Update, Remove, Count, Clear operations - Context-aware for cancellation support Validation Interface (pkg/validation/): - Validator interface for swap events and pools - ValidationRules with configurable thresholds - FilterValid() for batch validation - Zero address, zero amount, decimal precision checks Observability (pkg/observability/): - Logger interface with structured logging (slog) - Metrics interface with Prometheus integration - Performance tracking (parse latency, execution) - Business metrics (arbitrage opportunities, profit) Project Files: - go.mod: Module definition with ethereum and prometheus deps - README.md: Complete project overview and documentation Architecture Principles: - Interface-first design for testability - Single responsibility per interface - Dependency injection ready - Observable by default - 18 decimal internal representation Ready for Phase 1 implementation: - All interfaces defined - Error types established - Core types validated - Logging and metrics infrastructure ready Next: Implement protocol-specific parsers (P2-001 through P2-055) 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude <noreply@anthropic.com>
72 lines
2.2 KiB
Go
72 lines
2.2 KiB
Go
// Package validation defines the validation interface for swap events and pools
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package validation
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import (
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"context"
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"math/big"
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"github.com/ethereum/go-ethereum/common"
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"github.com/your-org/mev-bot/pkg/types"
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)
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// Validator defines the interface for validating swap events and pools
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type Validator interface {
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// ValidateSwapEvent validates a swap event
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ValidateSwapEvent(ctx context.Context, event *types.SwapEvent) error
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// ValidatePoolInfo validates pool information
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ValidatePoolInfo(ctx context.Context, pool *types.PoolInfo) error
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// FilterValid filters a slice of swap events, returning only valid ones
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FilterValid(ctx context.Context, events []*types.SwapEvent) []*types.SwapEvent
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// GetValidationRules returns the current validation rules
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GetValidationRules() *ValidationRules
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}
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// ValidationRules defines the rules for validation
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type ValidationRules struct {
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// Reject zero addresses
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RejectZeroAddresses bool
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// Reject zero amounts
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RejectZeroAmounts bool
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// Minimum amount threshold (in wei, scaled to 18 decimals)
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MinAmount *big.Int
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// Maximum amount threshold (in wei, scaled to 18 decimals)
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MaxAmount *big.Int
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// Allowed protocols (empty = all allowed)
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AllowedProtocols map[types.ProtocolType]bool
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// Reject events from blacklisted pools
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BlacklistedPools map[common.Address]bool
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// Reject events from blacklisted tokens
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BlacklistedTokens map[common.Address]bool
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// Validate decimal precision
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ValidateDecimals bool
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// Maximum acceptable slippage (in basis points, e.g. 50 = 0.5%)
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MaxSlippageBps uint32
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}
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// DefaultValidationRules returns the default validation rules
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func DefaultValidationRules() *ValidationRules {
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return &ValidationRules{
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RejectZeroAddresses: true,
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RejectZeroAmounts: true,
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MinAmount: big.NewInt(1000), // 0.000000000000001 ETH minimum
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MaxAmount: new(big.Int).Exp(big.NewInt(10), big.NewInt(30), nil), // 1 trillion tokens max
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AllowedProtocols: make(map[types.ProtocolType]bool),
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BlacklistedPools: make(map[common.Address]bool),
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BlacklistedTokens: make(map[common.Address]bool),
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ValidateDecimals: true,
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MaxSlippageBps: 50, // 0.5% max slippage
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}
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}
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