Agents / callbacks in 2.x

[jdb78]

Is your feature request related to a problem? Please describe.
I want to use haystack as backend for chainlit (frontend). There is an integration for haystack 1.x (see here) but I do not want to build on legacy tech. The issue is that haystack 2.x does not have callbacks, so chainlit can show the intermediate steps and what is going on.

Describe the solution you'd like
Can we introduce agents or enable callbacks in the pipeline?

Describe alternatives you've considered
Use langchain.

[ilkersigirci]

Chainlit integration for 2.x would be awesome. It is the only thing that blocks me to migrate from langchain to haystack.

BTW, is there any unofficial implementation of chainlit integration for simple haystack 2.x RAG pipeline?

[TuanaCelik]

Hi all, had a brief update with the team on this:
Callback work will start after the stable release of 2.0. We're tagging this with "follow-up-needed" so that we make sure to update you all as soon as we start working on this issue.

[samanvithms2002]

Hi team, is it also possible to add the custom callback method to haystack1.x as well as it would benefit us since we would have to migrate to haystack2.x only for accessing that functionality, it also be great to provide references to exisitng implementations of custom callback handlers in haystack1.x

[ayush4921]

Adding to this discussion, I love Haystack 1.25 and have been using Haystack 1.xx for a long time.

I wanted to confirm whether Agents and Cohere rerankers were in the dev pipeline for haystack 2.xx.

[jmdevita]

Also adding to this thread, I've been looking forward to using agents in my applications, and it's the last piece for me to move off of haystack 1.xx.

[jacksteussie]

any updates on this?

[rodrigozoff]

any updates on this?

[kurobanekid]

any updates on this?