Add support for kvstore, docstore, indexstore in Opensearch

[freedom07]

Description

I added support for kvstore, docstore, indexstore for Opensearch. It makes to do bm25 search and hybrid search.

Fixes #16748

New Package?

Did I fill in the tool.llamahub section in the pyproject.toml and provide a detailed README.md for my new integration or package?

• Yes
• No

Version Bump?

Did I bump the version in the pyproject.toml file of the package I am updating? (Except for the llama-index-core package)

• Yes
• No

Type of Change

Please delete options that are not relevant.

• New feature (non-breaking change which adds functionality)
• This change requires a documentation update

How Has This Been Tested?

Your pull-request will likely not be merged unless it is covered by some form of impactful unit testing.

• I added new unit tests to cover this change
• I believe this change is already covered by existing unit tests

Suggested Checklist:

• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• I have added Google Colab support for the newly added notebooks.
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes
• I ran make format; make lint to appease the lint gods

[freedom07]

@logan-markewich I have added integrations for kvstore, docstore, and indexstore. However docstore and indexstore have dependency on kvstore. Is there any process I have to do? The reason I'm thinking this way is because the unit tests are failing.

[logan-markewich]

@freedom07 That is not why tests are failing. If you read the logs, I see an error

llama-index-integrations/storage/kvstore/llama-index-storage-kvstore-opensearch/llama_index/storage/kvstore/opensearch/base.py:29: in <module>
    ) -> opensearchpy.AsyncOpenSearch:
E   AttributeError: module 'opensearchpy' has no attribute 'AsyncOpenSearch'

[freedom07]

@logan-markewich Thank you I understand. But I added opensearch-py package in pyproject.toml. I expected opensearchpy.AsyncOpenSearch to be accessible, but it's not. After installing the poetry toml file within the integration directory and running pytest locally, there were no issues.

Do you have any idea what might be causing this?

[logan-markewich]

@freedom07 Pushed a fix -- looks like it was missing the async extras opensearch-py = { version="^2.7.1", extras=["async"] }

[freedom07]

@logan-markewich oh I see. Thank you so much!

[logan-markewich]

@freedom07 any chance we can add unit tests for the kvstore? Ideally we can mock the clients

[freedom07]

@logan-markewich That sounds like a good idea. However, it's too late today, so I'll give it a try after getting some sleep.