sia helper function for adding certificates into aws acm

[havetisyan]

Description

the running sia in a lambda function, this helper function can be used by the users to save the given certificate in ACM.

Contribution Checklist:

• The pull request does not introduce any breaking changes
• I have read the contribution guidelines.
• Create an issue and link to the pull request.

Attach Screenshots (Optional)

[gemini-code-assist]

Summary of Changes

Hello @havetisyan, 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 enhances the Athenz SIA (Service Identity Agent) for AWS Lambda by introducing a new helper function to seamlessly integrate with AWS Certificate Manager (ACM). The primary goal is to simplify the process of storing and managing Athenz identity certificates directly within ACM, providing a more robust and automated certificate lifecycle for services running in Lambda. This change allows users to either update an existing certificate in ACM or import a new one, with the flexibility to identify certificates by ARN or by custom tags.

Highlights

• AWS ACM Integration: Introduced a new helper function StoreAthenzIdentityInACM to manage Athenz identity certificates within AWS Certificate Manager (ACM).
• Flexible Certificate Management: The new function allows importing or updating certificates in ACM, either by specifying an existing certificate ARN or by identifying certificates using a key-value tag pair.
• Dependency Updates: Updated various AWS SDK Go v2 dependencies to their latest versions, including the addition of the service/acm module.
• Comprehensive Testing: Added new unit tests for the ACM certificate management logic, ensuring robustness and correctness.

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 introduces a valuable helper function for storing Athenz certificates in AWS ACM, particularly useful for Lambda functions. The implementation is generally sound and includes unit tests for the new certificate lookup logic. I've identified a few areas for improvement to enhance correctness, robustness, and testability. Specifically, I recommend passing a context.Context to the main function, fixing a bug related to tag creation with an empty key, improving testability by extending the client interface, and making error handling more robust by using a sentinel error for 'not found' cases. Please see my detailed comments for specific suggestions.