chore(opensearchserverless): refactor cdk construct

[erdemayyildiz]

Fixes #737, #271

refactor for opensearchserverless constructs that follows best practices https://github.com/aws/aws-cdk/blob/main/docs/DESIGN_GUIDELINES.md

created interface for VectorCollection extended from IResource - https://github.com/aws/aws-cdk/blob/main/docs/DESIGN_GUIDELINES.md#construct-interface
created VectorCollectionBase implements IVectorCollection - https://github.com/aws/aws-cdk/blob/main/docs/DESIGN_GUIDELINES.md#abstract-base
created default metrics - https://github.com/aws/aws-cdk/blob/main/docs/DESIGN_GUIDELINES.md#metrics
created import methods fromCollectionName, fromCollectionAttributes - https://github.com/aws/aws-cdk/blob/main/docs/DESIGN_GUIDELINES.md#imports

developed additional test cases for refactored lines.

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[krokoko]

Thanks @erdemayyildiz ! Could you please run a full build locally, it seems the build was failing because of a mutation

[krokoko]

Thanks @erdemayyildiz ! Could you please provide some information on how you tested those changes ? It would be great to deploy this with the bedrock agent sample from the constructs

[erdemayyildiz]

hi @krokoko

yes i have deployed bedrock-agent to test my changes.

[krokoko]

Overall looks good, only issue are the calls to generatePhysicalNamev2 which require an update

[krokoko]

@erdemayyildiz pushed some changes with:

• Exposed some missing props (description, collection type, tags)
• Removed the "from..Name" method since type and standbyreplicas are needed, so kept only the "from...Atrributes" method
• Tested to deploy bedrock-agent, 2 knowledge bases with oss in the same stack, and oss collections separately with multiple variations (enable/disable standbyreplicas, different collection type, ...)
• Added tests to cover the new changes

[erdemayyildiz]

Hey @krokoko great, thanks!

[MichaelWalker-git]

LGTM