Integrate AI code reviewer

[ylwu-amzn]

Is your feature request related to a problem? Please describe

The current code review process can be time-consuming and may miss certain issues that an AI could potentially catch. Human reviewers may have inconsistent standards or overlook minor details due to fatigue or time constraints. Additionally, there's a need for faster initial feedback on code changes, especially for large repositories with high commit frequencies.

Describe the solution you'd like

We propose integrating an AI code reviewer into our GitHub workflow. The AI reviewer would:

1. Automatically analyze pull requests and provide feedback on code quality, style, and potential bugs
2. Suggest optimizations and best practices
3. Identify security vulnerabilities
4. Check for consistency with project-specific coding standards
5. Provide explanations for its suggestions to help developers learn and improve
6. Work alongside human reviewers, not replace them, to enhance the overall code review process
7. The AI reviewer should be customizable to fit our project's specific needs and should integrate seamlessly with GitHub's existing code review features.

Describe alternatives you've considered

1. Using static code analysis tools: While useful, they lack the contextual understanding and learning capabilities of AI
2. Implementing stricter code linting rules: This can catch some issues but may not provide the depth of analysis an AI could offer
3. Increasing the number of human reviewers: This could be costly and may not necessarily improve consistency or speed

Additional context

One example AI code reviewer action: https://github.com/marketplace/actions/ai-code-review-action

[brianf-aws]

I agree that we should leverage AI to do some time saving and mental effort. To add on to the use cases I think it would be great if they could also do this

• A summary of what the PR does; this lowers the mental overhead to understand what they are reviewing Here is a scenario that i thought the AI model could do. (This PR introduces feature X that interacts with classes a,b,c. Its most likely trying to do this... Based on the UTs wrote a sample input and output scenario looks like this.)
• Be able to to tell what scenarios you didn't test (We have a hard time thinking of edge cases until they happen)

[owaiskazi19]

This is nice and thanks @ylwu-amzn for the proposal. The only question I have is that the action requires an OpenAI key, are we fine with registering one for the action?

[ylwu-amzn]

This is nice and thanks @ylwu-amzn for the proposal. The only question I have is that the action requires an OpenAI key, are we fine with registering one for the action?

I think should be ok. Open to discuss this.

[dbwiddis]

I like the idea, but would suggest we find a way to make it on-request (e.g., a reviewer adding a comment like @aibot review or similar).

I'd also like AI bots to look at flaky tests and suggest how to fix them!

[bshien]

[Triage] @dblock @getsaurabh02 Please take a look and add your comments.

[reta]

Someone from Dosu contacted me recently on the matter, sharing the relevant conversation:

Dosu's behaviors can be customized based on the project's needs and risk tolerance. Apache Airflow uses auto-labelling on its issues (example) and response previews so the triage team can review Dosu's answers before they are posted. Superset allows automatic comments on all issues.

We've partnered with the CNCF and have been approved by the ASF, so have solid adoption within those ecosystems: OpenTelemetry Jaeger Apache DevLake KEDA Etc

We typically see maintainers start with auto-labelling (Dosu is very good at it) with response previews (auto-reply off, no user-facing impact). We are investing a lot in previews/human-the-loop-modes. If you join the community Slack, you can see some upcoming features.

[gaiksaya]

Adding @getsaurabh02 @Pallavi-AWS to get some input. Thanks!

[gaiksaya]

Closing in favor of https://github.com/opensearch-project/.github/issues/342 Please add your thoughts on the mentioned issue.