Refactor Session to accept ICommunicator interface for better extensibility

[oeqqwq]

• Move endpoints logic from Session to ClusterSpec
• Replace Session classmethod with factory function
• Decouple Session from HttpCommunicator implementation
• Improve testability and support for alternative communication protocols

[gemini-code-assist]

Summary of Changes

Hello @oeqqwq, 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 significantly refactors the Session and ClusterSpec components to improve the system's architecture, primarily by decoupling the Session from a concrete HttpCommunicator implementation. By introducing an ICommunicator interface and centralizing endpoint logic within ClusterSpec, the changes pave the way for greater extensibility, allowing for diverse communication protocols, and enhance the overall testability of the session management. The creation of sessions is also streamlined through a dedicated factory function.

Highlights

• Decoupling Session from HttpCommunicator: The Session class now accepts an ICommunicator interface in its constructor, removing its direct dependency on HttpCommunicator and allowing for more flexible communication protocols.
• Endpoint Logic Centralization: The logic for determining and formatting communication endpoints has been moved from the Session class to a new cached_property within the ClusterSpec class, improving modularity.
• Factory Function for Session Creation: The Session.from_cluster_spec_dict classmethod has been replaced by a module-level factory function session_from_cluster_spec_dict. This function now handles the creation of the ClusterSpec and the HttpCommunicator before instantiating the Session.
• Improved Extensibility and Testability: These refactorings enhance the system's extensibility by making it easier to introduce alternative communication protocols and improve testability by allowing mock ICommunicator implementations.

Using Gemini Code Assist

The full guide for Gemini Code Assist can be found on our documentation page, here are some quick tips.

Invoking Gemini

You can request assistance from Gemini at any point by creating a comment using either /gemini <command> or @gemini-code-assist <command>. Below is a summary of the supported commands on the current page.

Feature	Command	Description
Code Review	/gemini review	Performs a code review for the current pull request in its current state.
Pull Request Summary	/gemini summary	Provides a summary of the current pull request in its current state.
Comment	@gemini-code-assist	Responds in comments when explicitly tagged, both in pull request comments and review comments.
Help	/gemini help	Displays a list of available commands.

Customization

To customize Gemini Code Assist for GitHub experience, repository maintainers can create a configuration file and/or provide a custom code review style guide (such as PEP-8 for Python) by creating and adding files to a .gemini/ folder in the base of the repository. Detailed instructions can be found here.

Limitations & Feedback

Gemini Code Assist may make mistakes. Please leave feedback on any instances where its feedback is incorrect or counter productive. You can react with 👍 and 👎 on @gemini-code-assist comments. If you're interested in giving your feedback about your experience with Gemini Code Assist for Github and other Google products, sign up here.

You can also get AI-powered code generation, chat, as well as code reviews directly in the IDE at no cost with the Gemini Code Assist IDE Extension.

Footnotes

1. Review the Privacy Notices, Generative AI Prohibited Use Policy, Terms of Service, and learn how to configure Gemini Code Assist in GitHub here. Gemini can make mistakes, so double check it and use code with caution. ↩

[gemini-code-assist]

Code Review

This pull request effectively refactors the Session class to depend on an ICommunicator interface rather than the concrete HttpCommunicator implementation. This is a great improvement for extensibility and testability. The introduction of a factory function for session creation and moving the endpoints logic to ClusterSpec are also positive changes that improve code organization.

My review includes a couple of suggestions: one to improve code readability in cluster.py and a more critical one in session.py to ensure correct error handling at the API layer by raising the appropriate exception type.

[tongke6]

LGTM

[rivertalk]

LGTM

[tongke6]

LGTM