Commit Graph

8 Commits

Author SHA1 Message Date
Viktor Zhemchuzhnikov
507e46844e
Extend SQLChatMessageHistory (#9849)
### Description

There is a really nice class for saving chat messages into a database -
SQLChatMessageHistory.
It leverages SqlAlchemy to be compatible with any supported database (in
contrast with PostgresChatMessageHistory, which is basically the same
but is limited to Postgres).

However, the class is not really customizable in terms of what you can
store. I can imagine a lot of use cases, when one will need to save a
message date, along with some additional metadata.

To solve this, I propose to extract the converting logic from
BaseMessage to SQLAlchemy model (and vice versa) into a separate class -
message converter. So instead of rewriting the whole
SQLChatMessageHistory class, a user will only need to write a custom
model and a simple mapping class, and pass its instance as a parameter.

I also noticed that there is no documentation on this class, so I added
that too, with an example of custom message converter.

### Issue

N/A

### Dependencies

N/A

### Tag maintainer

Not yet

### Twitter handle

N/A
2023-09-03 15:49:53 -07:00
Josh White
bc8cceebf7
Extend DynamoDBChatMessageHistory to support composite keys (#9896)
- Description: Adds two optional parameters to the
DynamoDBChatMessageHistory class to enable users to pass in a name for
their PrimaryKey, or a Key object itself to enable the use of composite
keys, a common DynamoDB paradigm.
  
[AWS DynamoDB Key
docs](https://aws.amazon.com/blogs/database/choosing-the-right-dynamodb-partition-key/)
  
  - Issue: N/A
  - Dependencies: N/A
  - Twitter handle: N/A

---------

Co-authored-by: Josh White <josh@ctrlstack.com>
Co-authored-by: Bagatur <baskaryan@gmail.com>
2023-09-03 15:05:16 -07:00
Tudor Golubenco
171b0b183b
Pre-release Xata version no longer required (#9915)
Tiny PR: Since we've released version 1.0.0 of the python SDK, we no
longer need to specify the pre-release version when pip installing.
2023-08-29 07:21:22 -07:00
Tudor Golubenco
dc30edf51c
Xata as a chat message memory store (#9719)
This adds Xata as a memory store also to the python version of
LangChain, similar to the [one for
LangChain.js](https://github.com/hwchase17/langchainjs/pull/2217).

I have added a Jupyter Notebook with a simple and a more complex example
using an agent.

To run the integration test, you need to execute something like:

```
XATA_API_KEY='xau_...' XATA_DB_URL="https://demo-uni3q8.eu-west-1.xata.sh/db/langchain"  poetry run pytest tests/integration_tests/memory/test_xata.py
```

Where `langchain` is the database you create in Xata.
2023-08-24 17:37:46 -07:00
Aarav Borthakur
3f64b8a761
Integrate Rockset as a chat history store (#8940)
Description: Adds Rockset as a chat history store
Dependencies: no changes
Tag maintainer: @hwchase17

This PR passes linting and testing. 

I added a test for the integration and an example notebook showing its
use.
2023-08-08 18:54:07 -07:00
Joshua Carroll
e5fed7d535
Extend the StreamlitChatMessageHistory docs with a fuller example and… (#8774)
Add more details to the [notebook for
StreamlitChatMessageHistory](https://python.langchain.com/docs/integrations/memory/streamlit_chat_message_history),
including a link to a [running example
app](https://langchain-st-memory.streamlit.app/).

Original PR: https://github.com/langchain-ai/langchain/pull/8497
2023-08-04 14:27:46 -07:00
Joshua Carroll
6705928b9d
Add StreamlitChatMessageHistory (#8497)
Add a StreamlitChatMessageHistory class that stores chat messages in
[Streamlit's Session
State](https://docs.streamlit.io/library/api-reference/session-state).

Note: The integration test uses a currently-experimental Streamlit
testing framework to simulate the execution of a Streamlit app. Marking
this PR as draft until I confirm with the Streamlit team that we're
comfortable supporting it.

---------

Co-authored-by: Bagatur <baskaryan@gmail.com>
2023-08-01 14:28:15 -07:00
Bagatur
c8c8635dc9
mv module integrations docs (#8101) 2023-07-23 23:23:16 -07:00