217 lines
6.3 KiB
Markdown
217 lines
6.3 KiB
Markdown
# Token Aggregation Service - Implementation Complete ✅
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**Date**: 2026-01-26
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**Status**: ✅ **ALL COMPONENTS IMPLEMENTED**
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## Summary
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The Token Aggregation Service has been fully implemented according to the plan. All components are in place and ready for deployment.
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## ✅ Completed Components
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### 1. Database Schema
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- ✅ Migration file: `explorer-monorepo/backend/database/migrations/0011_token_aggregation_schema.up.sql`
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- ✅ Down migration: `0011_token_aggregation_schema.down.sql`
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- ✅ Tables created:
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- `token_market_data` - Market metrics per token
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- `liquidity_pools` - DEX pool information
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- `pool_reserves_history` - Time-series pool snapshots (TimescaleDB)
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- `token_ohlcv` - OHLCV data (TimescaleDB)
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- `external_api_cache` - Cached API responses
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- `token_signals` - Trending/growth metrics (TimescaleDB)
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- `swap_events` - Individual swap events (TimescaleDB)
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### 2. Service Structure
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- ✅ TypeScript project structure
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- ✅ `package.json` with all dependencies
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- ✅ `tsconfig.json` configuration
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- ✅ `.env.example` template
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- ✅ `.gitignore` file
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### 3. Database Layer
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- ✅ `database/client.ts` - PostgreSQL connection pool
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- ✅ `database/repositories/token-repo.ts` - Token data access
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- ✅ `database/repositories/market-data-repo.ts` - Market data access
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- ✅ `database/repositories/pool-repo.ts` - Pool data access
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### 4. Indexers
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- ✅ `indexer/token-indexer.ts` - ERC20 token discovery and indexing
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- ✅ `indexer/pool-indexer.ts` - Multi-protocol DEX pool indexing (UniswapV2/V3, DODO)
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- ✅ `indexer/volume-calculator.ts` - Volume metrics calculation
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- ✅ `indexer/ohlcv-generator.ts` - OHLCV data generation
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- ✅ `indexer/chain-indexer.ts` - Multi-chain orchestrator
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### 5. External API Adapters
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- ✅ `adapters/base-adapter.ts` - Base interface
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- ✅ `adapters/coingecko-adapter.ts` - CoinGecko integration
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- ✅ `adapters/cmc-adapter.ts` - CoinMarketCap integration
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- ✅ `adapters/dexscreener-adapter.ts` - DexScreener integration
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### 6. Configuration
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- ✅ `config/chains.ts` - Chain configurations (138, 651940)
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- ✅ `config/dex-factories.ts` - DEX factory addresses configuration
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### 7. REST API
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- ✅ `api/server.ts` - Express server with middleware
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- ✅ `api/middleware/cache.ts` - Response caching
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- ✅ `api/middleware/rate-limit.ts` - Rate limiting
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- ✅ `api/routes/tokens.ts` - All API endpoints
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### 8. API Endpoints Implemented
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- ✅ `GET /health` - Health check
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- ✅ `GET /api/v1/chains` - List supported chains
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- ✅ `GET /api/v1/tokens` - List tokens with pagination
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- ✅ `GET /api/v1/tokens/:address` - Get token details
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- ✅ `GET /api/v1/tokens/:address/pools` - Get token pools
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- ✅ `GET /api/v1/tokens/:address/ohlcv` - Get OHLCV data
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- ✅ `GET /api/v1/tokens/:address/signals` - Get trending signals
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- ✅ `GET /api/v1/search` - Search tokens
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- ✅ `GET /api/v1/pools/:poolAddress` - Get pool details
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### 9. Deployment
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- ✅ `Dockerfile` - Container image definition
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- ✅ `docker-compose.yml` - Docker Compose configuration
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- ✅ `.dockerignore` - Docker ignore patterns
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### 10. Documentation
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- ✅ `README.md` - Service documentation
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- ✅ `docs/API.md` - API documentation
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- ✅ `docs/DEPLOYMENT.md` - Deployment guide
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### 11. Scripts
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- ✅ `scripts/setup.sh` - Setup script
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## 📋 Next Steps for Deployment
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### 1. Database Migration
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Run the migration in the explorer database:
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```bash
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# Navigate to explorer backend
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cd explorer-monorepo/backend
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# Run migration (method depends on your migration tool)
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# The migration file is at:
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# database/migrations/0011_token_aggregation_schema.up.sql
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```
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### 2. Environment Configuration
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Create `.env` file:
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```bash
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cd smom-dbis-138/services/token-aggregation
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cp .env.example .env
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# Edit .env with your values
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```
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Required variables:
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- `CHAIN_138_RPC_URL`
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- `CHAIN_651940_RPC_URL`
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- `DATABASE_URL`
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Optional (for external API enrichment):
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- `COINGECKO_API_KEY`
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- `COINMARKETCAP_API_KEY`
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- `DEXSCREENER_API_KEY`
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### 3. DEX Factory Configuration
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Configure DEX factory addresses via environment variables:
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```bash
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# For ChainID 138
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CHAIN_138_DODO_POOL_MANAGER=0x...
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CHAIN_138_UNISWAP_V2_FACTORY=0x...
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CHAIN_138_UNISWAP_V3_FACTORY=0x...
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# For ChainID 651940 (as discovered)
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CHAIN_651940_UNISWAP_V2_FACTORY=0x...
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```
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### 4. Install Dependencies
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```bash
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cd smom-dbis-138/services/token-aggregation
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npm install
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```
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### 5. Build and Run
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```bash
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# Build
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npm run build
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# Run
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npm start
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# Or development mode
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npm run dev
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```
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### 6. Verify
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```bash
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# Health check
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curl http://localhost:3000/health
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# Test API
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curl http://localhost:3000/api/v1/chains
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```
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## 🔧 Configuration Notes
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### DEX Factory Discovery
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- **ChainID 138**: DODO PoolManager address needs to be configured
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- **ChainID 651940**: DEX factories need to be discovered/configured
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### External API Support
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- **CoinGecko**: Supports many chains, but 138 and 651940 may not be supported
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- **CoinMarketCap**: Requires Pro API key, limited chain support
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- **DexScreener**: Supports many chains, but 138 and 651940 may not be supported
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All adapters gracefully handle unsupported chains by returning `null`.
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## 📊 Architecture
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The service follows a three-layer architecture:
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1. **Layer 1: Chain-Native Indexer** - On-chain data as source of truth
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2. **Layer 2: External Enrichment** - Best-effort enrichment from APIs
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3. **Layer 3: Unified REST API** - Single API for consumption
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## 🎯 Features
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- ✅ Multi-chain support (138, 651940)
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- ✅ Multi-DEX protocol support (UniswapV2, UniswapV3, DODO)
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- ✅ Token discovery and indexing
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- ✅ Pool discovery and tracking
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- ✅ Volume calculation (5m, 1h, 24h, 7d, 30d)
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- ✅ OHLCV data generation
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- ✅ External API enrichment
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- ✅ REST API with caching and rate limiting
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- ✅ Health checks and monitoring
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- ✅ Docker deployment ready
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## 📝 Files Created
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Total files created: **30+**
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### Core Service Files
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- Service entry point (`src/index.ts`)
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- API server (`src/api/server.ts`)
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- All indexers (5 files)
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- All adapters (4 files)
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- All repositories (3 files)
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- Configuration files (2 files)
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- API routes and middleware (3 files)
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### Infrastructure Files
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- Dockerfile
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- docker-compose.yml
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- Setup script
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- Documentation (3 files)
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### Database
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- Migration files (up and down)
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## ✅ Status: READY FOR DEPLOYMENT
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All components are implemented and ready. The service can be deployed after:
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1. Running database migration
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2. Configuring environment variables
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3. Installing dependencies
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4. Building the project
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