feat: Implement comprehensive Market Manager with database and logging
- Add complete Market Manager package with in-memory storage and CRUD operations - Implement arbitrage detection with profit calculations and thresholds - Add database adapter with PostgreSQL schema for persistence - Create comprehensive logging system with specialized log files - Add detailed documentation and implementation plans - Include example application and comprehensive test suite - Update Makefile with market manager build targets - Add check-implementations command for verification
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docs/spec/MARKET_MANAGER_PLAN.md
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docs/spec/MARKET_MANAGER_PLAN.md
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# Market Manager/BUILDER Planning Document
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## Overview
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This document outlines the plan for implementing a comprehensive Market Manager/BUILDER system for the MEV bot. The system will handle market data collection, storage, and analysis to identify arbitrage opportunities across different DEX protocols on Arbitrum.
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## Core Requirements
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### Data Structure
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```go
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type Market struct {
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Factory common.Address // DEX factory contract address
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PoolAddress common.Address // Pool contract address
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Token0 common.Address // First token in pair
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Token1 common.Address // Second token in pair
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Fee uint32 // Pool fee (e.g., 500 for 0.05%)
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Ticker string // Formatted as <symbol>_<symbol> (e.g., "WETH_USDC")
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RawTicker string // Formatted as <token0>_<token1> (e.g., "0x..._0x...")
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Key string // <keccak256ofToken0Token1FeeFactoryPoolAddress>
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}
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// Market storage structure
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type Markets map[string]map[string]*Market // map[rawTicker]map[marketKey]*Market
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```
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### Core Functionality
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1. **Market Data Collection**
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- Parse swap and liquidity events from Arbitrum sequencer
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- Store data with "possible" status initially
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- Within 500ms, verify transaction existence on-chain
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- Update data with confirmed on-chain values
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2. **Market Data Storage**
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- Cache market data in memory for fast access
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- Persist data to database for historical analysis
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- Support data versioning (sequencer vs. on-chain)
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3. **Arbitrage Opportunity Detection**
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- Iterate through markets by rawTicker
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- For each rawTicker, examine all associated markets
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- Sort by price (least to highest)
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- Check each combination for arbitrage opportunities
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- Validate profit exceeds threshold (fee1 + fee0 + minArbPct)
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## Implementation Phases
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### Phase 1: Market Data Structure and Storage (Week 1)
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#### 1.1 Core Data Structures
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- [ ] Implement Market struct with all required fields
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- [ ] Implement Markets type (map[rawTicker]map[marketKey]*Market)
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- [ ] Add helper functions for key generation (keccak256 hashing)
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- [ ] Implement serialization/deserialization for database storage
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#### 1.2 Market Manager Core
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- [ ] Create MarketManager interface
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- [ ] Implement in-memory market storage
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- [ ] Add market CRUD operations (Create, Read, Update, Delete)
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- [ ] Implement market lookup by various keys (ticker, rawTicker, key)
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#### 1.3 Database Integration
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- [ ] Design database schema for market data persistence
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- [ ] Implement database adapter for market storage
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- [ ] Add data versioning support (sequencer vs. on-chain)
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- [ ] Implement batch operations for efficient data handling
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### Phase 2: Data Collection and Verification (Week 2)
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#### 2.1 Event Parsing Enhancement
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- [ ] Extend event parser to handle market-specific data
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- [ ] Implement swap event parsing with full liquidity data
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- [ ] Add liquidity event parsing (add/remove liquidity)
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- [ ] Implement new pool event parsing
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#### 2.2 Sequencer Data Processing
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- [ ] Implement sequencer data collection pipeline
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- [ ] Add "possible" status marking for new market data
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- [ ] Implement timestamp tracking for verification scheduling
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- [ ] Add data validation before initial storage
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#### 2.3 On-chain Verification
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- [ ] Implement verification scheduler (500ms window)
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- [ ] Add Ethereum client integration for transaction verification
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- [ ] Implement on-chain data retrieval and comparison
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- [ ] Update market data with confirmed on-chain values
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### Phase 3: Arbitrage Detection Engine (Week 3)
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#### 3.1 Market Iteration and Sorting
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- [ ] Implement market iteration by rawTicker
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- [ ] Add price sorting functionality (least to highest)
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- [ ] Implement efficient market combination generation
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- [ ] Add performance optimization for large market sets
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#### 3.2 Profit Calculation
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- [ ] Implement fee calculation for different pool types
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- [ ] Add price impact modeling for large trades
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- [ ] Implement profit threshold validation
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- [ ] Add gas cost estimation for arbitrage transactions
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#### 3.3 Arbitrage Validation
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- [ ] Implement arbitrage opportunity detection algorithm
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- [ ] Add multi-hop arbitrage support
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- [ ] Implement risk assessment for each opportunity
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- [ ] Add opportunity scoring and ranking
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### Phase 4: Performance Optimization and Testing (Week 4)
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#### 4.1 Caching and Performance
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- [ ] Implement intelligent caching strategies
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- [ ] Add cache warming for frequently accessed markets
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- [ ] Implement cache expiration and cleanup
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- [ ] Optimize memory usage for large market datasets
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#### 4.2 Testing and Validation
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- [ ] Implement unit tests for all core functionality
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- [ ] Add integration tests with mock blockchain data
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- [ ] Implement performance benchmarks
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- [ ] Add stress testing for high-volume scenarios
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#### 4.3 Monitoring and Observability
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- [ ] Add metrics collection for market operations
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- [ ] Implement logging for key events and errors
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- [ ] Add health checks for market data freshness
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- [ ] Implement alerting for critical system issues
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## Technical Considerations
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### Data Consistency
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- Handle race conditions between sequencer data and on-chain verification
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- Implement transactional updates for market data
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- Add conflict resolution for concurrent data modifications
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### Scalability
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- Design for horizontal scaling across multiple market segments
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- Implement sharding for large market datasets
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- Add load balancing for data processing tasks
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### Security
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- Validate all incoming market data
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- Implement rate limiting for data collection
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- Add authentication for market data access
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- Implement audit logging for all market operations
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## Dependencies
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1. Existing event parsing infrastructure
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2. Ethereum client libraries for on-chain verification
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3. Database system for persistence
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4. Cache system for in-memory storage
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## Success Metrics
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- Market data processing latency < 100ms
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- On-chain verification success rate > 99%
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- Arbitrage detection accuracy > 95%
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- System uptime > 99.9%
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- Memory usage < 2GB for 10,000 markets
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## Risk Mitigation
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1. **Data Inconsistency**: Implement robust conflict resolution
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2. **Performance Issues**: Add caching and optimize algorithms
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3. **Network Failures**: Implement retry mechanisms with exponential backoff
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4. **Security Breaches**: Add comprehensive input validation and authentication
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## Timeline
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- Week 1: Market Data Structure and Storage
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- Week 2: Data Collection and Verification
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- Week 3: Arbitrage Detection Engine
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- Week 4: Performance Optimization and Testing
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