Errors in event handlers cause server to crash

[rmorshea]

The flow:

1. Event handler onClick called
2. Event handler dumps an event (dict) into an anyio memory_stream's send_stream
3. Event handler done
4. Separate anyio-spawned thread picks up the event (inside an async for)
5. Event is executed, exception hit
6. Stack trace posted above happens

The rest of the application (the event queue) is responsive when this happens and I'm able to dispatch/process events via non-idom means.

My fix was to add a try/catch around step 5. The problem is resolved but the stack trace was getting swallowed somehow from the exception in event execution so it took a while to realize it was my code at fault.

Hopefully that all makes sense.

Originally posted by @brentbaum in #392 (reply in thread)

[rmorshea]

Adding a try/except here and logging the error rather than raising it should fix the issue: https://github.com/idom-team/idom/blob/main/src/idom/core/layout.py#L108

[rmorshea]

A fix for this will make it into the upcoming 0.29.0 release this week.