Emit events about Agent eval (#3168)

* feat: emit events abou Agent Eval

We are triggering events when an evaluation has started/completed/failed

* style: fix type checking issues

src/crewai/experimental/evaluation/agent_evaluator.py

@@ -1,23 +1,24 @@
+import threading
+from typing import Any
+
 from crewai.experimental.evaluation.base_evaluator import AgentEvaluationResult, AggregationStrategy
 from crewai.agent import Agent
 from crewai.task import Task
 from crewai.experimental.evaluation.evaluation_display import EvaluationDisplayFormatter
-
-from typing import Any
+from crewai.utilities.events.agent_events import AgentEvaluationStartedEvent, AgentEvaluationCompletedEvent, AgentEvaluationFailedEvent
 from crewai.experimental.evaluation import BaseEvaluator, create_evaluation_callbacks
 from collections.abc import Sequence
 from crewai.utilities.events.crewai_event_bus import crewai_event_bus
 from crewai.utilities.events.utils.console_formatter import ConsoleFormatter
 from crewai.utilities.events.task_events import TaskCompletedEvent
 from crewai.utilities.events.agent_events import LiteAgentExecutionCompletedEvent
-from crewai.experimental.evaluation.base_evaluator import AgentAggregatedEvaluationResult
-import threading
+from crewai.experimental.evaluation.base_evaluator import AgentAggregatedEvaluationResult, EvaluationScore, MetricCategory
 
 class ExecutionState:
     def __init__(self):
         self.traces = {}
-        self.current_agent_id = None
-        self.current_task_id = None
+        self.current_agent_id: str | None = None
+        self.current_task_id: str | None = None
         self.iteration = 1
         self.iterations_results = {}
         self.agent_evaluators = {}
@@ -49,17 +50,21 @@ class AgentEvaluator:
         return self._thread_local.execution_state
 
     def _subscribe_to_events(self) -> None:
-        crewai_event_bus.register_handler(TaskCompletedEvent, self._handle_task_completed)
-        crewai_event_bus.register_handler(LiteAgentExecutionCompletedEvent, self._handle_lite_agent_completed)
+        from typing import cast
+        crewai_event_bus.register_handler(TaskCompletedEvent, cast(Any, self._handle_task_completed))
+        crewai_event_bus.register_handler(LiteAgentExecutionCompletedEvent, cast(Any, self._handle_lite_agent_completed))
 
     def _handle_task_completed(self, source: Any, event: TaskCompletedEvent) -> None:
         assert event.task is not None
         agent = event.task.agent
         if agent and str(getattr(agent, 'id', 'unknown')) in self._execution_state.agent_evaluators:
+            self.emit_evaluation_started_event(agent_role=agent.role, agent_id=str(agent.id), task_id=str(event.task.id))
+
             state = ExecutionState()
             state.current_agent_id = str(agent.id)
             state.current_task_id = str(event.task.id)
 
+            assert state.current_agent_id is not None and state.current_task_id is not None
             trace = self.callback.get_trace(state.current_agent_id, state.current_task_id)
 
             if not trace:
@@ -100,6 +105,7 @@ class AgentEvaluator:
             if not target_agent:
                 return
 
+            assert state.current_agent_id is not None and state.current_task_id is not None
             trace = self.callback.get_trace(state.current_agent_id, state.current_task_id)
 
             if not trace:
@@ -181,8 +187,10 @@ class AgentEvaluator:
         )
 
         assert self.evaluators is not None
+        task_id = str(task.id) if task else None
         for evaluator in self.evaluators:
             try:
+                self.emit_evaluation_started_event(agent_role=agent.role, agent_id=str(agent.id), task_id=task_id)
                 score = evaluator.evaluate(
                     agent=agent,
                     task=task,
@@ -190,11 +198,31 @@ class AgentEvaluator:
                     final_output=final_output
                 )
                 result.metrics[evaluator.metric_category] = score
+                self.emit_evaluation_completed_event(agent_role=agent.role, agent_id=str(agent.id), task_id=task_id, metric_category=evaluator.metric_category, score=score)
             except Exception as e:
+                self.emit_evaluation_failed_event(agent_role=agent.role, agent_id=str(agent.id), task_id=task_id, error=str(e))
                 self.console_formatter.print(f"Error in {evaluator.metric_category.value} evaluator: {str(e)}")
 
         return result
 
+    def emit_evaluation_started_event(self, agent_role: str, agent_id: str, task_id: str | None = None):
+        crewai_event_bus.emit(
+            self,
+            AgentEvaluationStartedEvent(agent_role=agent_role, agent_id=agent_id, task_id=task_id, iteration=self._execution_state.iteration)
+        )
+
+    def emit_evaluation_completed_event(self, agent_role: str, agent_id: str, task_id: str | None = None, metric_category: MetricCategory | None = None, score: EvaluationScore | None = None):
+        crewai_event_bus.emit(
+            self,
+            AgentEvaluationCompletedEvent(agent_role=agent_role, agent_id=agent_id, task_id=task_id, iteration=self._execution_state.iteration, metric_category=metric_category, score=score)
+        )
+
+    def emit_evaluation_failed_event(self, agent_role: str, agent_id: str, error: str, task_id: str | None = None):
+        crewai_event_bus.emit(
+            self,
+            AgentEvaluationFailedEvent(agent_role=agent_role, agent_id=agent_id, task_id=task_id, iteration=self._execution_state.iteration, error=error)
+        )
+
 def create_default_evaluator(agents: list[Agent], llm: None = None):
     from crewai.experimental.evaluation import (
         GoalAlignmentEvaluator,

src/crewai/experimental/evaluation/evaluation_listener.py

@@ -227,4 +227,8 @@ class EvaluationTraceCallback(BaseEventListener):
 
 
 def create_evaluation_callbacks() -> EvaluationTraceCallback:
-    return EvaluationTraceCallback()
+    from crewai.utilities.events.crewai_event_bus import crewai_event_bus
+
+    callback = EvaluationTraceCallback()
+    callback.setup_listeners(crewai_event_bus)
+    return callback

src/crewai/utilities/events/__init__.py

@@ -17,6 +17,9 @@ from .agent_events import (
     AgentExecutionStartedEvent,
     AgentExecutionCompletedEvent,
     AgentExecutionErrorEvent,
+    AgentEvaluationStartedEvent,
+    AgentEvaluationCompletedEvent,
+    AgentEvaluationFailedEvent,
 )
 from .task_events import (
     TaskStartedEvent,
@@ -74,6 +77,9 @@ __all__ = [
     "AgentExecutionStartedEvent",
     "AgentExecutionCompletedEvent",
     "AgentExecutionErrorEvent",
+    "AgentEvaluationStartedEvent",
+    "AgentEvaluationCompletedEvent",
+    "AgentEvaluationFailedEvent",
     "TaskStartedEvent",
     "TaskCompletedEvent",
     "TaskFailedEvent",

src/crewai/utilities/events/agent_events.py

@@ -123,3 +123,28 @@ class AgentLogsExecutionEvent(BaseEvent):
     type: str = "agent_logs_execution"
 
     model_config = {"arbitrary_types_allowed": True}
+
+# Agent Eval events
+class AgentEvaluationStartedEvent(BaseEvent):
+    agent_id: str
+    agent_role: str
+    task_id: str | None = None
+    iteration: int
+    type: str = "agent_evaluation_started"
+
+class AgentEvaluationCompletedEvent(BaseEvent):
+    agent_id: str
+    agent_role: str
+    task_id: str | None = None
+    iteration: int
+    metric_category: Any
+    score: Any
+    type: str = "agent_evaluation_completed"
+
+class AgentEvaluationFailedEvent(BaseEvent):
+    agent_id: str
+    agent_role: str
+    task_id: str | None = None
+    iteration: int
+    error: str
+    type: str = "agent_evaluation_failed"

tests/cassettes/TestAgentEvaluator.test_failed_evaluation.yaml

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+      format:\n\nThought: I now can give a great answer\nFinal Answer: Your final
+      answer must be the great and the most complete as possible, it must be outcome
+      described.\n\nI MUST use these formats, my job depends on it!"}, {"role": "user",
+      "content": "\nCurrent Task: Test task description\n\nThis is the expected criteria
+      for your final answer: Expected test output\nyou MUST return the actual complete
+      content as the final answer, not a summary.\n\nBegin! This is VERY important
+      to you, use the tools available and give your best Final Answer, your job depends
+      on it!\n\nThought:"}], "model": "gpt-4o-mini", "stop": ["\nObservation:"]}'
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tests/experimental/evaluation/test_agent_evaluator.py

@@ -11,9 +11,13 @@ from crewai.experimental.evaluation import (
     ToolSelectionEvaluator,
     ParameterExtractionEvaluator,
     ToolInvocationEvaluator,
-    ReasoningEfficiencyEvaluator
+    ReasoningEfficiencyEvaluator,
+    MetricCategory,
+    EvaluationScore
 )
 
+from crewai.utilities.events.agent_events import AgentEvaluationStartedEvent, AgentEvaluationCompletedEvent, AgentEvaluationFailedEvent
+from crewai.utilities.events.crewai_event_bus import crewai_event_bus
 from crewai.experimental.evaluation import create_default_evaluator
 
 class TestAgentEvaluator:
@@ -102,10 +106,39 @@ class TestAgentEvaluator:
             goal="Complete test tasks successfully",
             backstory="An agent created for testing purposes",
         )
+
+        with crewai_event_bus.scoped_handlers():
+            events = {}
+            @crewai_event_bus.on(AgentEvaluationStartedEvent)
+            def capture_started(source, event):
+                events["started"] = event
+
+            @crewai_event_bus.on(AgentEvaluationCompletedEvent)
+            def capture_completed(source, event):
+                events["completed"] = event
+
+            @crewai_event_bus.on(AgentEvaluationFailedEvent)
+            def capture_failed(source, event):
+                events["failed"] = event
+
             agent_evaluator = AgentEvaluator(agents=[agent], evaluators=[GoalAlignmentEvaluator()])
 
             agent.kickoff(messages="Complete this task successfully")
 
+            assert events.keys() == {"started", "completed"}
+            assert events["started"].agent_id == str(agent.id)
+            assert events["started"].agent_role == agent.role
+            assert events["started"].task_id is None
+            assert events["started"].iteration == 1
+
+            assert events["completed"].agent_id == str(agent.id)
+            assert events["completed"].agent_role == agent.role
+            assert events["completed"].task_id is None
+            assert events["completed"].iteration == 1
+            assert events["completed"].metric_category == MetricCategory.GOAL_ALIGNMENT
+            assert isinstance(events["completed"].score, EvaluationScore)
+            assert events["completed"].score.score == 2.0
+
             results = agent_evaluator.get_evaluation_results()
 
             assert isinstance(results, dict)
@@ -140,10 +173,37 @@ class TestAgentEvaluator:
         mock_crew.agents.append(agent)
         mock_crew.tasks.append(task)
 
-        agent_evaluator = AgentEvaluator(agents=[agent], evaluators=[GoalAlignmentEvaluator()])
+        with crewai_event_bus.scoped_handlers():
+            events = {}
+            @crewai_event_bus.on(AgentEvaluationStartedEvent)
+            def capture_started(source, event):
+                events["started"] = event
 
+            @crewai_event_bus.on(AgentEvaluationCompletedEvent)
+            def capture_completed(source, event):
+                events["completed"] = event
+
+            @crewai_event_bus.on(AgentEvaluationFailedEvent)
+            def capture_failed(source, event):
+                events["failed"] = event
+
+            agent_evaluator = AgentEvaluator(agents=[agent], evaluators=[GoalAlignmentEvaluator()])
             mock_crew.kickoff()
 
+            assert events.keys() == {"started", "completed"}
+            assert events["started"].agent_id == str(agent.id)
+            assert events["started"].agent_role == agent.role
+            assert events["started"].task_id == str(task.id)
+            assert events["started"].iteration == 1
+
+            assert events["completed"].agent_id == str(agent.id)
+            assert events["completed"].agent_role == agent.role
+            assert events["completed"].task_id == str(task.id)
+            assert events["completed"].iteration == 1
+            assert events["completed"].metric_category == MetricCategory.GOAL_ALIGNMENT
+            assert isinstance(events["completed"].score, EvaluationScore)
+            assert events["completed"].score.score == 5.0
+
             results = agent_evaluator.get_evaluation_results()
 
             assert isinstance(results, dict)
@@ -162,3 +222,57 @@ class TestAgentEvaluator:
 
             assert goal_alignment.raw_response is not None
             assert '"score": 5' in goal_alignment.raw_response
+
+
+    @pytest.mark.vcr(filter_headers=["authorization"])
+    def test_failed_evaluation(self, mock_crew):
+        agent, = mock_crew.agents
+        task, = mock_crew.tasks
+
+        with crewai_event_bus.scoped_handlers():
+            events = {}
+
+            @crewai_event_bus.on(AgentEvaluationStartedEvent)
+            def capture_started(source, event):
+                events["started"] = event
+
+            @crewai_event_bus.on(AgentEvaluationCompletedEvent)
+            def capture_completed(source, event):
+                events["completed"] = event
+
+            @crewai_event_bus.on(AgentEvaluationFailedEvent)
+            def capture_failed(source, event):
+                events["failed"] = event
+
+            # Create a mock evaluator that will raise an exception
+            from crewai.experimental.evaluation.base_evaluator import BaseEvaluator
+            from crewai.experimental.evaluation import MetricCategory
+            class FailingEvaluator(BaseEvaluator):
+                metric_category = MetricCategory.GOAL_ALIGNMENT
+
+                def evaluate(self, agent, task, execution_trace, final_output):
+                    raise ValueError("Forced evaluation failure")
+
+            agent_evaluator = AgentEvaluator(agents=[agent], evaluators=[FailingEvaluator()])
+            mock_crew.kickoff()
+
+            assert events.keys() == {"started", "failed"}
+            assert events["started"].agent_id == str(agent.id)
+            assert events["started"].agent_role == agent.role
+            assert events["started"].task_id == str(task.id)
+            assert events["started"].iteration == 1
+
+            assert events["failed"].agent_id == str(agent.id)
+            assert events["failed"].agent_role == agent.role
+            assert events["failed"].task_id == str(task.id)
+            assert events["failed"].iteration == 1
+            assert events["failed"].error == "Forced evaluation failure"
+
+            results = agent_evaluator.get_evaluation_results()
+            result, = results[agent.role]
+            assert isinstance(result, AgentEvaluationResult)
+
+            assert result.agent_id == str(agent.id)
+            assert result.task_id == str(task.id)
+
+            assert result.metrics == {}