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Refactor event base classes (#2491)

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- Renamed `CrewEvent` to `BaseEvent` across the codebase for consistency
- Created a `CrewBaseEvent` that automatically identifies fingerprints for DRY
- Added a new `to_json()` method for serializing events
This commit is contained in:
Vini Brasil
2025-03-27 15:42:11 -03:00
committed by GitHub
parent fc9da22c38
commit f845fac4da
12 changed files with 155 additions and 219 deletions
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docs/concepts/event-listener.mdx
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@@ -13,7 +13,7 @@ CrewAI provides a powerful event system that allows you to listen for and react
CrewAI uses an event bus architecture to emit events throughout the execution lifecycle. The event system is built on the following components:
1. **CrewAIEventsBus**: A singleton event bus that manages event registration and emission
2. **CrewEvent**: Base class for all events in the system
2. **BaseEvent**: Base class for all events in the system
3. **BaseEventListener**: Abstract base class for creating custom event listeners
When specific actions occur in CrewAI (like a Crew starting execution, an Agent completing a task, or a tool being used), the system emits corresponding events. You can register handlers for these events to execute custom code when they occur.
@@ -234,7 +234,7 @@ Each event handler receives two parameters:
1. **source**: The object that emitted the event
2. **event**: The event instance, containing event-specific data
The structure of the event object depends on the event type, but all events inherit from `CrewEvent` and include:
The structure of the event object depends on the event type, but all events inherit from `BaseEvent` and include:
- **timestamp**: The time when the event was emitted
- **type**: A string identifier for the event type