AutoErrorEventMiddleware - abxbus

AutoErrorEventMiddleware emits {OriginalEventType}ErrorEvent when a handler completes with an error.

Constructor params

None.

Setup with EventBus

Python
Rust

from abxbus import EventBus
from abxbus.middlewares import AutoErrorEventMiddleware

bus = EventBus(
    name='AppBus',
    middlewares=[AutoErrorEventMiddleware()],
)

// Not implemented in the Rust crate yet.
// Use explicit typed handler wrappers around bus.on(...) for this behavior for now.

Behavior

Runs on completed handler results.
If a handler errored, emits an auto event with:
- event_type: {OriginalEventType}ErrorEvent
- error: original exception
- error_type: exception class name
Skips source events ending in ErrorEvent or ResultEvent to prevent auto recursion.