Adam Demjen 008348ce71 Add ElasticsearchChatMessageHistory (#10932) ...

**Description**

This PR adds the `ElasticsearchChatMessageHistory` implementation that
stores chat message history in the configured
[Elasticsearch](https://www.elastic.co/elasticsearch/) deployment.

```python
from langchain.memory.chat_message_histories import ElasticsearchChatMessageHistory

history = ElasticsearchChatMessageHistory(
    es_url="https://my-elasticsearch-deployment-url:9200", index="chat-history-index", session_id="123"
)

history.add_ai_message("This is me, the AI")
history.add_user_message("This is me, the human")
```

**Dependencies**
- [elasticsearch client](https://elasticsearch-py.readthedocs.io/)
required

Co-authored-by: Bagatur <baskaryan@gmail.com>

2023-10-12 16:51:38 -07:00

..

memory

Add ElasticsearchChatMessageHistory (#10932)

2023-10-12 16:51:38 -07:00