Adding support for async Langchain methods

[marcklingen]

Currently the langchain integration does not support async methods - eg ainvoke.

Tracking overall interest for support of this here.

[Sarangk90]

This is extremely helpful feature for anyone using Langchain in streaming mode

[braisdev]

I was looking to start using Langfuse in our company but the lack of the .stream() method (LCEL) support makes it unusable for us.
We always implement streaming in our customer chatbots.

[marcklingen]

Thanks all for your +1 on this, we're currently focussing our efforts on the top roadmap items and will get to this afterwards. Happy to support contributions on this in the meantime!

Issue: #1456

[yvesloy]

I would also love to see support for ainvoke! Is there any timeline for this?

[yvesloy]

Great to hear! I will be waiting for the package then :)
Do you know if there is a way I could get notified once it is released?

[noble-varghese]

Only if you watch the repo for releases by checking the "Releases" option under watch.

[noble-varghese]

Hi @yvesloy, The latest version of the package has been released. You can verify now :D

[yvesloy]

It is working! Thank you 👍

[marcklingen]

Awesome, thanks @noble-varghese 🙏 And thanks @yvesloy for confirming

[marcklingen]

@noble-varghese's change to add support for async/batch/streaming is released in https://github.com/langfuse/langfuse-python/releases/tag/v2.22.0

Changelog: https://langfuse.com/changelog/2024-04-08-langchain-streaming-and-batch