Feat/ingestor architecture

[KevinMB0220]

🚀 Neko Pull Request

Mark with an x all the checkboxes that apply (like [x])

• Closes #
• Added tests (if necessary)
• Run tests
• Run formatting
• Evidence attached
• Commented the code

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📌 Type of Change

• Documentation (updates to README, docs, or comments)
• Bug fix (non-breaking change which fixes an issue)
• Enhancement (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

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📝 Changes description

This PR introduces a Prices Ingestor module that exposes raw asset prices via an HTTP endpoint for external observability.

✅ What was implemented

New Files

• services/price-fetcher.service.ts
  Simulates raw price fetching from external APIs with detailed logging.

• controllers/prices.controller.ts
  HTTP controller exposing GET /prices/raw.

• modules/prices.module.ts
  NestJS module encapsulating the prices controller and service.

Modified Files

• app.module.ts
  Imports and wires the PricesModule.

• .eslintrc.js
  ESLint configuration updates.

🎯 Acceptance Criteria Met

• ✅ Externally observable prices
  Available via GET /prices/raw and logged to the console.

• ✅ Verifiable output
  Endpoint returns 12 raw prices
  (4 symbols × 3 data sources).

• ✅ No persistence
  Uses in-memory storage only.

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📸 Evidence (A Loom/Cap video is required as evidence, we WON'T merge if there's no proof)

• Response returns a JSON array with simulated raw prices for:

  • AAPL
  • GOOGL
  • MSFT
  • TSLA

  From the following sources:

  • AlphaVantage
  • YahooFinance
  • Finnhub

📷 Screenshot / video capture attached showing the successful response.

⏰ Time spent breakdown

• Architecture & module setup: 30 min
• Service & controller implementation: 45 min
• ESLint configuration & formatting: 15 min
• Manual testing & evidence capture: 15 min

Total: ~1h 45m

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🌌 Comments

This implementation focuses on observability and correctness, providing a clean foundation for future oracle integrations.
The logic is intentionally kept simple and in-memory to align with the current acceptance criteria and allow fast iteration.

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Close #11

Thank you for contributing to Neko, you just helped us make RWAs consumer friendly on Stellar! 🚀

[FabianSanchezD]

Looks good to me! This is a great way to test out the ingestor architecture