Client create requires unreasonable privileges

[pbudzyns]

When using ElasticsearchRetriever.from_es_params I am getting cluster level access error because init function is calling es_client.info() method which requires permissions on cluster. It's not always the case, especially in enterprise setup. There should be better ways to test connectivity.

langchain-elastic/libs/elasticsearch/langchain_elasticsearch/client.py

Line 38 in 83ef833

es_client.info() # test connection

https://elasticsearch-py.readthedocs.io/en/v7.14.1/api.html?highlight=info#elasticsearch.Elasticsearch.info

[pquentin]

Version 7.x of the Python client emitted a warning in such cases, that's probably the right thing to do, even if we still got complaints about this.

[pbudzyns]

Then maybe it makes sense to add try catch inside create_elasticsearch_client function. I see the current version of the library doesn't even allow for elastic 7.x

langchain-elastic/libs/elasticsearch/pyproject.toml

Line 16 in 83ef833

elasticsearch = {version = "^8.15.1", extras = ["vectorstore_mmr"]}