Extract Reference Data Service from Monorepo

[devin-ai-integration]

Extract Reference Data Service to Standalone Repository

This PR extracts the reference data service from the COG-GTM/traderXCognitiondemos monorepo into a new standalone repository. The service is a complete NestJS application that provides stock ticker information via REST APIs.

Changes Made

• Complete service extraction: Copied entire /reference-data directory structure from the monorepo
• All required files included:
  • NestJS application source code (src/ directory)
  • Package configuration with all dependencies (package.json)
  • Docker configuration (Dockerfile, base.Dockerfile)
  • Stock data file (data/s-and-p-500-companies.csv with 507 S&P 500 companies)
  • API specification (openapi.yaml)
  • Configuration files (.eslintrc.js, .prettierrc, nest-cli.json, tsconfig.json)

Service Architecture

• Main Application: src/app.module.ts imports StocksModule and HealthModule
• Stocks API: Complete CRUD operations with endpoints:
  • GET /stocks - Returns all stocks from CSV data
  • GET /stocks/{ticker} - Returns specific stock by ticker symbol
• Health Monitoring: GET /health endpoint using @nestjs/terminus
• Data Loading: Automatic CSV parsing of S&P 500 companies data
• Swagger Documentation: Available at /api endpoint

Environment Configuration

• Default Port: 18085
• Environment Variables:
  • REFERENCE_DATA_SERVICE_PORT (default: 18085)
  • REFERENCE_DATA_HOSTNAME (default: 0.0.0.0)

Verification Results

✅ Service builds successfully - npm run build completed without errors
✅ Service starts correctly - Runs on port 18085 as expected
✅ API endpoints functional:

• GET /stocks returns complete list of 507 stocks
• GET /stocks/MMM returns specific stock data for 3M Company
• GET /health returns health check status
  ✅ All dependencies resolved - No missing packages or build issues
  ✅ Data loading works - CSV file properly parsed and loaded

Testing Commands Used

npm install
npm run build
npm run start
curl http://localhost:18085/stocks
curl http://localhost:18085/stocks/MMM
curl http://localhost:18085/health

The service is now completely independent and ready for deployment as a standalone microservice.

Link to Devin run: https://app.devin.ai/sessions/f924326f296b46439860a56d99c9daa3
Requested by: Samir Chaudhry (samir@cognition.ai)

[devin-ai-integration]

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