RunnableConfig metadata

[petrsychrava]

There is requirement for RunnableConfig metadata values to be JSON serializable in Langgraph Python API (https://python.langchain.com/api_reference/core/runnables/langchain_core.runnables.config.RunnableConfig.html)

Is such requirement either present or planned valid also for RunnableConfig metadata in Langgraph4j? We would like to store values which are not meant to be serializable.

Thanks in advance.

[bsorrentino]

Hi @petrsychrava currently in LangGraph4j RunnableConfig is not meant to be serialized and there are no serialization constraints on Metadata to allow user to provide any type of information to the nodes during their execution

However I'm curios and the question here is: what are the use cases where is useful that LangGraph4j serialise runnable configuration ?

[petrsychrava]

Hi @bsorrentino and thanks for the quick response. Regarding the use cases where serialization would be useful, I am not aware of any. I just wanted to be sure that values of the metadata field in RunnableConfig are not required to be serializable as they are in Python Langgraph API

[bsorrentino]

Hi @petrsychrava I confirm that there isn't any plan to make RunnableConfig serializable