smom-dbis-138/services/token-aggregation/IMPLEMENTATION_COMPLETE.md

Token Aggregation Service - Implementation Complete ✅

Date: 2026-01-26
Status: ✅ ALL COMPONENTS IMPLEMENTED

Summary

The Token Aggregation Service has been fully implemented according to the plan. All components are in place and ready for deployment.

✅ Completed Components

1. Database Schema

• ✅ Migration file: explorer-monorepo/backend/database/migrations/0011_token_aggregation_schema.up.sql
• ✅ Down migration: 0011_token_aggregation_schema.down.sql
• ✅ Tables created:
  • token_market_data - Market metrics per token
  • liquidity_pools - DEX pool information
  • pool_reserves_history - Time-series pool snapshots (TimescaleDB)
  • token_ohlcv - OHLCV data (TimescaleDB)
  • external_api_cache - Cached API responses
  • token_signals - Trending/growth metrics (TimescaleDB)
  • swap_events - Individual swap events (TimescaleDB)

2. Service Structure

• ✅ TypeScript project structure
• ✅ package.json with all dependencies
• ✅ tsconfig.json configuration
• ✅ .env.example template
• ✅ .gitignore file

3. Database Layer

• ✅ database/client.ts - PostgreSQL connection pool
• ✅ database/repositories/token-repo.ts - Token data access
• ✅ database/repositories/market-data-repo.ts - Market data access
• ✅ database/repositories/pool-repo.ts - Pool data access

4. Indexers

• ✅ indexer/token-indexer.ts - ERC20 token discovery and indexing
• ✅ indexer/pool-indexer.ts - Multi-protocol DEX pool indexing (UniswapV2/V3, DODO)
• ✅ indexer/volume-calculator.ts - Volume metrics calculation
• ✅ indexer/ohlcv-generator.ts - OHLCV data generation
• ✅ indexer/chain-indexer.ts - Multi-chain orchestrator

5. External API Adapters

• ✅ adapters/base-adapter.ts - Base interface
• ✅ adapters/coingecko-adapter.ts - CoinGecko integration
• ✅ adapters/cmc-adapter.ts - CoinMarketCap integration
• ✅ adapters/dexscreener-adapter.ts - DexScreener integration

6. Configuration

• ✅ config/chains.ts - Chain configurations (138, 651940)
• ✅ config/dex-factories.ts - DEX factory addresses configuration

7. REST API

• ✅ api/server.ts - Express server with middleware
• ✅ api/middleware/cache.ts - Response caching
• ✅ api/middleware/rate-limit.ts - Rate limiting
• ✅ api/routes/tokens.ts - All API endpoints

8. API Endpoints Implemented

• ✅ GET /health - Health check
• ✅ GET /api/v1/chains - List supported chains
• ✅ GET /api/v1/tokens - List tokens with pagination
• ✅ GET /api/v1/tokens/:address - Get token details
• ✅ GET /api/v1/tokens/:address/pools - Get token pools
• ✅ GET /api/v1/tokens/:address/ohlcv - Get OHLCV data
• ✅ GET /api/v1/tokens/:address/signals - Get trending signals
• ✅ GET /api/v1/search - Search tokens
• ✅ GET /api/v1/pools/:poolAddress - Get pool details

9. Deployment

• ✅ Dockerfile - Container image definition
• ✅ docker-compose.yml - Docker Compose configuration
• ✅ .dockerignore - Docker ignore patterns

10. Documentation

• ✅ README.md - Service documentation
• ✅ docs/API.md - API documentation
• ✅ docs/DEPLOYMENT.md - Deployment guide

11. Scripts

• ✅ scripts/setup.sh - Setup script

📋 Next Steps for Deployment

1. Database Migration

Run the migration in the explorer database:

# Navigate to explorer backend
cd explorer-monorepo/backend

# Run migration (method depends on your migration tool)
# The migration file is at:
# database/migrations/0011_token_aggregation_schema.up.sql

2. Environment Configuration

Create .env file:

cd smom-dbis-138/services/token-aggregation
cp .env.example .env
# Edit .env with your values

Required variables:

• CHAIN_138_RPC_URL
• CHAIN_651940_RPC_URL
• DATABASE_URL

Optional (for external API enrichment):

• COINGECKO_API_KEY
• COINMARKETCAP_API_KEY
• DEXSCREENER_API_KEY

3. DEX Factory Configuration

Configure DEX factory addresses via environment variables:

# For ChainID 138
CHAIN_138_DODO_POOL_MANAGER=0x...
CHAIN_138_UNISWAP_V2_FACTORY=0x...
CHAIN_138_UNISWAP_V3_FACTORY=0x...

# For ChainID 651940 (as discovered)
CHAIN_651940_UNISWAP_V2_FACTORY=0x...

4. Install Dependencies

cd smom-dbis-138/services/token-aggregation
npm install

5. Build and Run

# Build
npm run build

# Run
npm start

# Or development mode
npm run dev

6. Verify

# Health check
curl http://localhost:3000/health

# Test API
curl http://localhost:3000/api/v1/chains

🔧 Configuration Notes

DEX Factory Discovery

• ChainID 138: DODO PoolManager address needs to be configured
• ChainID 651940: DEX factories need to be discovered/configured

External API Support

• CoinGecko: Supports many chains, but 138 and 651940 may not be supported
• CoinMarketCap: Requires Pro API key, limited chain support
• DexScreener: Supports many chains, but 138 and 651940 may not be supported

All adapters gracefully handle unsupported chains by returning null.

📊 Architecture

The service follows a three-layer architecture:

1. Layer 1: Chain-Native Indexer - On-chain data as source of truth
2. Layer 2: External Enrichment - Best-effort enrichment from APIs
3. Layer 3: Unified REST API - Single API for consumption

🎯 Features

• ✅ Multi-chain support (138, 651940)
• ✅ Multi-DEX protocol support (UniswapV2, UniswapV3, DODO)
• ✅ Token discovery and indexing
• ✅ Pool discovery and tracking
• ✅ Volume calculation (5m, 1h, 24h, 7d, 30d)
• ✅ OHLCV data generation
• ✅ External API enrichment
• ✅ REST API with caching and rate limiting
• ✅ Health checks and monitoring
• ✅ Docker deployment ready

📝 Files Created

Total files created: 30+

Core Service Files

• Service entry point (src/index.ts)
• API server (src/api/server.ts)
• All indexers (5 files)
• All adapters (4 files)
• All repositories (3 files)
• Configuration files (2 files)
• API routes and middleware (3 files)

Infrastructure Files

• Dockerfile
• docker-compose.yml
• Setup script
• Documentation (3 files)

Database

• Migration files (up and down)

✅ Status: READY FOR DEPLOYMENT

All components are implemented and ready. The service can be deployed after:

1. Running database migration
2. Configuring environment variables
3. Installing dependencies
4. Building the project