Ignore certain fields in state from checkpointing

[ykothari-hirefly]

I have this agent state defined:

class AgentState(TypedDict):
    messages: Annotated[list, add_messages]
    progress_handler: Annotated[Callable, None]

The progress_handler is a callback that logs certain information passed by various nodes. Now during checkpointing, I don't want to persist this information, but at the moment I cannot find any way apart from creating a wrapper on this callable to allow check pointer to continue without breaking because of failed JSON serialization.

[vbarda]

consider passing the handler via config instead

[RollsChris]

Hi I have a similar requirement, I track the type of model calls through the state graph, but don't want to persist all the time?
Thanks