feat: refactor price fetching

[freak12techno]

Summary by CodeRabbit

Release Notes

• New Features

  • Introduced a modular price fetching system supporting multiple sources.
  • Added new methods to enhance price data retrieval and representation.
  • Updated Prometheus metrics to include additional context for price data.

• Bug Fixes

  • Removed reliance on the Coingecko API for price fetching, streamlining data handling.

• Documentation

  • Enhanced clarity and functionality of price data structures and fetching mechanisms.

• Refactor

  • Significant restructuring of price fetching logic to improve scalability and maintainability.

[coderabbitai]

Walkthrough

The changes involve significant modifications across multiple files, primarily focusing on the removal of Coingecko-related functionality and the introduction of a more modular price-fetching system. The NewApp function no longer utilizes the Coingecko API, and related methods and tests have been removed. New structures and interfaces have been introduced to support various price fetchers, enhancing the overall architecture for handling price data.

Changes

Files	Change Summary
pkg/app.go	Removed Coingecko instantiation and updated NewPriceFetcher to exclude Coingecko parameter.
pkg/config/config.go	Removed GetCoingeckoCurrencies method from Config struct.
pkg/config/config_test.go	Removed TestCoingeckoCurrencies function.
pkg/config/denom_info.go	Added PriceFetchers method to DenomInfo struct for retrieving price fetcher names based on currency configuration.
pkg/constants/constants.go	Introduced PriceFetcherName type, PriceFetcherNameCoingecko, and CoingeckoBaseCurrency constant.
pkg/fetchers/price.go	Modified PriceFetcher struct to support multiple price sources, restructured Fetch method for concurrent fetching, and updated data structures for price information.
pkg/fetchers/price_test.go	Removed Coingecko fetcher instantiation from tests and updated assertions to reflect new data structure.
pkg/generators/price.go	Enhanced Prometheus metric labels for token prices to include source and base_currency.
pkg/generators/price_test.go	Updated tests to reflect changes in Prices map structure, now using fetchers.PriceInfo.
pkg/price_fetchers/coingecko/coingecko.go	Modified FetchPrices method to accept ChainWithDenom instead of currency strings and updated response handling to return PriceInfo.
pkg/price_fetchers/price_fetcher.go	Introduced new price_fetchers package with ChainWithDenom, PriceInfo, and PriceFetcher interface for structured price data retrieval.

Sequence Diagram(s)

sequenceDiagram
    participant App
    participant PriceFetcher
    participant PriceInfo

    App->>PriceFetcher: NewPriceFetcher(logger, appConfig, tracer)
    PriceFetcher->>PriceInfo: Fetch(denoms)
    PriceInfo-->>PriceFetcher: Return PriceInfo[]
    PriceFetcher-->>App: Return PriceData

Loading

🐇 In the code we hop and play,
Fetching prices in a new way.
No more Coingecko in our sight,
Modular fetchers take the flight!
With structure clear and data bright,
We celebrate this coding delight! 🌟

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Recent review details

Configuration used: CodeRabbit UI
Review profile: CHILL

Commits

Files that changed from the base of the PR and between ee87b65 and 6f74f27.

Files selected for processing (2)

• assets/coingecko.json (1 hunks)
• pkg/fetchers/price_test.go (4 hunks)

Files skipped from review due to trivial changes (1)

• assets/coingecko.json

Files skipped from review as they are similar to previous changes (1)

• pkg/fetchers/price_test.go

---

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 100.00%. Comparing base (492c69e) to head (6f74f27).
Report is 2 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff            @@
##              main       #80   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files           67        67           
  Lines         2761      2793   +32     
=========================================
+ Hits          2761      2793   +32     

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