Add extension registry client

[chrstnb]

Summary

Add a client to be used to fetch extensions from geminicli.com/extensions.json

Details

This may change in the future, but should unblock UI work at the moment.

Related Issues

Fixes https://github.com/google-gemini/maintainers-gemini-cli/issues/1321

How to Validate

Pre-Merge Checklist

• Updated relevant documentation and README (if needed)
• Added/updated tests (if needed)
• Noted breaking changes (if any)
• Validated on required platforms/methods:
  • MacOS
    • npm run
    • npx
    • Docker
    • Podman
    • Seatbelt
  • Windows
    • npm run
    • npx
    • Docker
  • Linux
    • npm run
    • npx
    • Docker

[gemini-code-assist]

Summary of Changes

Hello @chrstnb, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request establishes the foundational client-side logic for interacting with an external extension registry. It enables the CLI to programmatically access and filter a list of available extensions, which is crucial for supporting future user interface features related to extension discovery and management. The implementation includes robust data retrieval, sorting, and searching capabilities, along with a caching layer for efficiency.

Highlights

• New Extension Registry Client: Introduced a new ExtensionRegistryClient class responsible for fetching and managing extension data from a remote registry.
• Data Fetching and Caching: The client fetches extension data from 'https://geminicli.com/extensions.json' and includes a caching mechanism to prevent redundant network requests.
• Extension Management Features: Provides methods to retrieve extensions with pagination and sorting options (by ranking or alphabetically), search extensions by name, description, or full name, and fetch a single extension by its ID.
• Comprehensive Unit Tests: Accompanying unit tests have been added to ensure the reliability and correct functionality of the ExtensionRegistryClient, covering various scenarios including pagination, sorting, searching, caching, and error handling.

Changelog

• packages/cli/src/config/extensionRegistryClient.test.ts
  • Added new test file for ExtensionRegistryClient.
  • Includes tests for getExtensions with pagination and sorting.
  • Contains tests for searchExtensions by various criteria.
  • Verifies getExtension functionality and handling of non-existent IDs.
  • Tests the caching mechanism to ensure single fetch calls.
  • Validates error handling when the fetch operation fails.
• packages/cli/src/config/extensionRegistryClient.ts
  • Added new file defining the RegistryExtension interface, specifying the structure of extension data.
  • Introduced the ExtensionRegistryClient class.
  • Implemented getExtensions method for paginated and sorted retrieval of extensions.
  • Implemented searchExtensions method for filtering extensions based on a query string.
  • Implemented getExtension method to retrieve a specific extension by its ID.
  • Added a private fetchAllExtensions method with caching logic to fetch data from the registry URL.

Activity

• The pull request introduces a new client to fetch extensions from geminicli.com/extensions.json.
• It addresses and fixes issue Checkpointing documentation #1321 related to the extension registry.
• The author has included a pre-merge checklist, indicating readiness for review and validation on various platforms.

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[gemini-code-assist]

Code Review

This pull request introduces a new ExtensionRegistryClient to fetch extensions from a remote JSON file, along with corresponding tests. The implementation is clean and the tests are comprehensive. I've identified two areas for improvement in extensionRegistryClient.ts to enhance robustness and adherence to project conventions:

1. The use of the global fetch API should be replaced with fetchWithTimeout to prevent the application from hanging on slow network requests.
2. The switch statement in getExtensions should include an exhaustive check in its default case to ensure all possible orderBy values are handled, which aligns with the repository's coding guidelines.

[github-actions]

Size Change: +167 B (0%)

Total Size: 23.8 MB

ℹ️ View Unchanged

Filename	Size	Change
./bundle/gemini.js	23.8 MB	+167 B (0%)
./bundle/sandbox-macos-permissive-closed.sb	1.03 kB	0 B
./bundle/sandbox-macos-permissive-open.sb	890 B	0 B
./bundle/sandbox-macos-permissive-proxied.sb	1.31 kB	0 B
./bundle/sandbox-macos-restrictive-closed.sb	3.29 kB	0 B
./bundle/sandbox-macos-restrictive-open.sb	3.36 kB	0 B
./bundle/sandbox-macos-restrictive-proxied.sb	3.56 kB	0 B

_{compressed-size-action}

[sehoon38]

few comments, LGTM overall