Error when serializing ElasticSearchEmbeddingRetriever from ElasticSearchDocumentStore with authentication

[IronD7]

Dear developers,

I'm using an ElasticSearchDocumentStore with authentication like so:

document_store = ElasticsearchDocumentStore(hosts = "https://localhost:9200",
                                            index = INDEX,
                                           basic_auth=("elastic", ELASTIC_PASSWORD),
                                           ssl_assert_fingerprint=CERT_FINGERPRINT,)

and have an ElasticsearchEmbeddingRetriever in my pipeline.

After serializing my Pipeline (relevant part of .yaml file below) and trying to deploy it in hayhooks, I get an Error message about that Python tuple:

yaml.constructor.ConstructorError: could not determine a constructor for the tag 'tag:yaml.org,2002:python/tuple'
in "", line 53, column 23:
basic_auth: !!python/tuple

Is there any way to prevent this (other than using elastic without authentication)?

retriever:
init_parameters:
document_store:
init_parameters:
basic_auth: !!python/tuple
- elastic
- <ELASTIC_PW>
hosts: https://localhost:9200
type: haystack_integrations.document_stores.elasticsearch.document_store.ElasticsearchDocumentStore
filters: {}
num_candidates: null
top_k: 10
type: haystack_integrations.components.retrievers.elasticsearch.embedding_retriever.ElasticsearchEmbeddingRetriever

[anakin87]

I noticed the same bug in the Opensearch integration.

[shadeMe]

Thanks for the report. The linked PR should fix this issue once it gets released in a new Haystack build.