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https://github.com/crewAIInc/crewAI.git
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65a4b7cede
* fix: emit FlowStartedEvent when a boundary hook aborts the flow A HookAborted at EXECUTION_START or INPUT propagated before `FlowStartedEvent` was emitted, so a policy deny left logs but no record of the execution. On abort, stamp the state id and open the flow scope before re-raising: the deny surfaces as a started -> failed execution while normal runs keep the existing ordering — the started event carries hook-resolved inputs and `id` rewrites keep redirecting persistence restoration. * docs: translate execution-boundary-hooks page to ar, ko, and pt-BR The English page updated on this branch had never been localized. Translate it into the three supported locales following `DOCS_TRANSLATIONS.md` and register the page in each locale's navigation in `docs/docs.json`. Untranslated link targets (the step-hooks page and the aborting-an-operation anchor) are omitted rather than pointed at English, matching the locale navigation convention.
599 lines
18 KiB
Python
599 lines
18 KiB
Python
"""Conformance suite for the framework-native interception points.
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For each wired point this suite asserts the shared contract: the probe hook
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sees a well-shaped payload, an in-place/returned modification is honored, and a
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:class:`HookAborted` interrupts the step.
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"""
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from __future__ import annotations
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import asyncio
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from unittest.mock import patch
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from crewai.agent import Agent
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from crewai.crew import Crew
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from crewai.events.event_bus import crewai_event_bus
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from crewai.events.types.crew_events import CrewKickoffCompletedEvent
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from crewai.events.types.flow_events import (
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FlowFailedEvent,
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FlowFinishedEvent,
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FlowStartedEvent,
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)
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from crewai.flow.flow import Flow, listen, start
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from crewai.hooks.dispatch import (
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HookAborted,
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InterceptionPoint,
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clear_all,
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on,
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)
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from crewai.task import Task
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import pytest
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@pytest.fixture(autouse=True)
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def clear_dispatch_registry():
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clear_all()
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yield
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clear_all()
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class _SimpleFlow(Flow):
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@start()
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def begin(self):
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return "begin"
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@listen(begin)
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def finish(self, _):
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return "flow-result"
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class _FailingFlow(Flow):
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@start()
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def begin(self):
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raise RuntimeError("flow boom")
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class _ReentrantFailingFlow(Flow):
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"""Kicks itself off once from inside a method, then fails in the outer run."""
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@start()
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async def begin(self):
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if getattr(self, "_reentered", False):
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return "inner-ok"
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self._reentered = True
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await self.kickoff_async()
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raise RuntimeError("outer boom")
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class TestFlowExecutionBoundaries:
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"""execution_start / input / output / execution_end on a flow."""
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def test_all_boundary_points_fire_once(self):
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fired: list[str] = []
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for point in (
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InterceptionPoint.EXECUTION_START,
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InterceptionPoint.INPUT,
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InterceptionPoint.OUTPUT,
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InterceptionPoint.EXECUTION_END,
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):
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@on(point)
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def _probe(ctx, _point=point):
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fired.append(_point.value)
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_SimpleFlow().kickoff(inputs={"seed": 1})
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assert fired == [
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"execution_start",
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"input",
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"output",
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"execution_end",
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]
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def test_output_modification_is_honored(self):
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@on(InterceptionPoint.OUTPUT)
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def rewrite(ctx):
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return "intercepted"
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result = _SimpleFlow().kickoff()
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assert result == "intercepted"
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def test_input_payload_carries_inputs(self):
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seen: dict = {}
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@on(InterceptionPoint.INPUT)
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def capture(ctx):
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seen.update(ctx.payload or {})
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_SimpleFlow().kickoff(inputs={"seed": 42})
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assert seen == {"seed": 42}
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def test_input_hook_rewrite_lands_in_flow_state(self):
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@on(InterceptionPoint.INPUT)
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def inject(ctx):
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return {**(ctx.payload or {}), "injected": "by-hook"}
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class _StateReader(Flow):
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@start()
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def begin(self):
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return self.state["injected"]
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assert _StateReader().kickoff(inputs={"seed": 1}) == "by-hook"
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def test_abort_at_execution_start_interrupts(self):
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@on(InterceptionPoint.EXECUTION_START)
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def block(ctx):
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raise HookAborted(reason="not allowed", source="policy")
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with pytest.raises(HookAborted) as exc:
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_SimpleFlow().kickoff()
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assert exc.value.reason == "not allowed"
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class TestFlowStepPoints:
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"""pre_step / post_step for flow methods (kind=flow_method)."""
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def test_pre_and_post_step_fire_per_method(self):
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kinds: list[tuple[str, str | None]] = []
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@on(InterceptionPoint.PRE_STEP)
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def pre(ctx):
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kinds.append(("pre", ctx.step_name))
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@on(InterceptionPoint.POST_STEP)
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def post(ctx):
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kinds.append(("post", ctx.step_name))
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_SimpleFlow().kickoff()
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assert ("pre", "begin") in kinds
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assert ("post", "begin") in kinds
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assert ("pre", "finish") in kinds
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assert ("post", "finish") in kinds
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def test_post_step_can_rewrite_method_output(self):
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@on(InterceptionPoint.POST_STEP)
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def rewrite(ctx):
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if ctx.step_name == "finish":
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return "rewritten"
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return None
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assert _SimpleFlow().kickoff() == "rewritten"
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class TestTaskStepPoints:
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"""pre_step / post_step for task execution (kind=task)."""
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def test_post_step_rewrite_is_persisted_to_output_file(
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self, tmp_path, monkeypatch
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):
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@on(InterceptionPoint.POST_STEP)
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def sanitize(ctx):
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return ctx.payload.model_copy(update={"raw": "sanitized output"})
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monkeypatch.chdir(tmp_path)
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agent = Agent(role="Writer", goal="Write", backstory="Writes things.")
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task = Task(
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description="Write something",
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expected_output="Some text",
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output_file="output.txt",
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agent=agent,
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)
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with patch.object(Agent, "execute_task", return_value="original output"):
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result = task.execute_sync(agent=agent)
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assert result.raw == "sanitized output"
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assert (tmp_path / "output.txt").read_text() == "sanitized output"
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class TestExecutionEndOnFailure:
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"""execution_end fires exactly once, on success and on failure alike."""
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@staticmethod
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def _crew() -> Crew:
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agent = Agent(role="Writer", goal="Write", backstory="Writes things.")
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task = Task(
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description="Write something",
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expected_output="Some text",
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agent=agent,
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)
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return Crew(agents=[agent], tasks=[task], verbose=False)
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def test_crew_success_fires_completed_once(self):
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seen: list[tuple[str, BaseException | None]] = []
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@on(InterceptionPoint.EXECUTION_END)
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def capture(ctx):
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seen.append((ctx.status, ctx.error))
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with patch.object(Agent, "execute_task", return_value="fine"):
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self._crew().kickoff()
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assert seen == [("completed", None)]
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def test_crew_failure_fires_failed_once_and_reraises(self):
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seen = []
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@on(InterceptionPoint.EXECUTION_END)
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def capture(ctx):
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seen.append(ctx)
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error = RuntimeError("crew boom")
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with patch.object(Agent, "execute_task", side_effect=error):
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with pytest.raises(RuntimeError, match="crew boom"):
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self._crew().kickoff()
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assert len(seen) == 1
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assert seen[0].status == "failed"
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assert seen[0].error is error
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assert seen[0].output is None
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def test_crew_kickoff_async_failure_fires_failed_once(self):
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seen = []
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@on(InterceptionPoint.EXECUTION_END)
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def capture(ctx):
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seen.append(ctx)
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with patch.object(
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Agent, "execute_task", side_effect=RuntimeError("crew boom")
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):
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with pytest.raises(RuntimeError, match="crew boom"):
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asyncio.run(self._crew().kickoff_async())
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assert len(seen) == 1
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assert seen[0].status == "failed"
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def test_flow_success_fires_completed_once(self):
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seen: list[tuple[str, BaseException | None]] = []
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@on(InterceptionPoint.EXECUTION_END)
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def capture(ctx):
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seen.append((ctx.status, ctx.error))
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_SimpleFlow().kickoff()
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assert seen == [("completed", None)]
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def test_flow_failure_fires_failed_once_and_reraises(self):
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seen = []
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@on(InterceptionPoint.EXECUTION_END)
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def capture(ctx):
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seen.append(ctx)
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with pytest.raises(RuntimeError, match="flow boom"):
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_FailingFlow().kickoff()
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assert len(seen) == 1
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assert seen[0].status == "failed"
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assert isinstance(seen[0].error, RuntimeError)
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assert seen[0].output is None
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def test_reentrant_flow_kickoff_pairs_ends_per_invocation(self):
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seen: list[tuple[str, str | None]] = []
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@on(InterceptionPoint.EXECUTION_START)
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def capture_start(ctx):
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seen.append(("start", None))
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@on(InterceptionPoint.EXECUTION_END)
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def capture_end(ctx):
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seen.append(("end", ctx.status))
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with pytest.raises(RuntimeError, match="outer boom"):
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_ReentrantFailingFlow().kickoff()
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assert seen == [
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("start", None),
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("start", None),
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("end", "completed"),
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("end", "failed"),
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]
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def test_no_execution_end_when_execution_start_aborts(self):
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seen = []
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@on(InterceptionPoint.EXECUTION_START)
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def block(ctx):
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raise HookAborted(reason="blocked")
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@on(InterceptionPoint.EXECUTION_END)
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def capture(ctx):
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seen.append(ctx)
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with pytest.raises(HookAborted):
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_SimpleFlow().kickoff()
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with pytest.raises(HookAborted):
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self._crew().kickoff()
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assert seen == []
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def test_aborting_execution_end_hook_fires_once_for_flow(self):
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calls: list[str] = []
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@on(InterceptionPoint.EXECUTION_END)
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def abort_end(ctx):
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calls.append(ctx.status)
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raise HookAborted(reason="no")
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with pytest.raises(HookAborted):
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_SimpleFlow().kickoff()
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assert calls == ["completed"]
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def test_aborting_execution_end_hook_fires_once_for_crew(self):
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calls: list[str] = []
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@on(InterceptionPoint.EXECUTION_END)
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def abort_end(ctx):
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calls.append(ctx.status)
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raise HookAborted(reason="no")
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with patch.object(Agent, "execute_task", return_value="fine"):
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with pytest.raises(HookAborted):
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self._crew().kickoff()
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assert calls == ["completed"]
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class TestCrewOutput:
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def test_output_modification_reaches_kickoff_completed_event(self):
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@on(InterceptionPoint.OUTPUT)
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def append_notice(ctx):
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if hasattr(ctx.payload, "raw") and isinstance(ctx.payload.raw, str):
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ctx.payload.raw += "\nchanged by hook"
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return None
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completed_raw: list[str] = []
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@crewai_event_bus.on(CrewKickoffCompletedEvent)
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def capture_completed(_source, event: CrewKickoffCompletedEvent):
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completed_raw.append(event.output.raw)
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agent = Agent(role="Writer", goal="Write", backstory="Writes things.")
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task = Task(
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description="Write something",
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expected_output="Some text",
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agent=agent,
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)
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crew = Crew(agents=[agent], tasks=[task], verbose=False)
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with patch.object(Agent, "execute_task", return_value="original output"):
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result = crew.kickoff()
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crewai_event_bus.flush()
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assert result.raw.endswith("changed by hook")
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assert completed_raw
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assert completed_raw[-1].endswith("changed by hook")
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class TestFlowLifecycleEventOrdering:
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"""Boundary hooks resolve the inputs before FlowStartedEvent snapshots
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them; an abort at EXECUTION_START still surfaces as started -> failed."""
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def test_abort_at_execution_start_emits_started_then_failed(self):
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lifecycle: list[str] = []
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with crewai_event_bus.scoped_handlers():
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@crewai_event_bus.on(FlowStartedEvent)
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def on_started(_source, _event):
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lifecycle.append("flow_started")
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@crewai_event_bus.on(FlowFailedEvent)
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def on_failed(_source, _event):
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lifecycle.append("flow_failed")
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@crewai_event_bus.on(FlowFinishedEvent)
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def on_finished(_source, _event):
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lifecycle.append("flow_finished")
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@on(InterceptionPoint.EXECUTION_START)
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def block(ctx):
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raise HookAborted(reason="denied", source="policy")
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with pytest.raises(HookAborted, match="denied"):
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_SimpleFlow().kickoff()
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crewai_event_bus.flush()
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assert lifecycle == ["flow_started", "flow_failed"]
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def test_boundary_id_rewrite_redirects_state_identity(self):
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# Listeners key execution records off flow_id at emission time.
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seen_ids: list[str] = []
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rewritten_id = "0b8ee866-77b3-4dc6-9de4-90a92cbc9fcf"
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with crewai_event_bus.scoped_handlers():
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@crewai_event_bus.on(FlowStartedEvent)
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def capture(source, _event):
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seen_ids.append(source.flow_id)
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@on(InterceptionPoint.EXECUTION_START)
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def rewrite(ctx):
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return {**(ctx.payload or {}), "id": rewritten_id}
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_SimpleFlow().kickoff(
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inputs={"id": "2f9deb0a-41c5-4f4e-9be9-3a5a34c4dc94"}
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)
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crewai_event_bus.flush()
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assert seen_ids == [rewritten_id]
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def test_abort_keeps_state_id_from_inputs(self):
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# Error-by-id correlation reads the state id stamped at abort time.
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seen_ids: list[str] = []
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pinned_id = "0b8ee866-77b3-4dc6-9de4-90a92cbc9fcf"
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with crewai_event_bus.scoped_handlers():
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@crewai_event_bus.on(FlowStartedEvent)
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def capture(source, _event):
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seen_ids.append(source.flow_id)
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@on(InterceptionPoint.EXECUTION_START)
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def block(ctx):
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raise HookAborted(reason="denied")
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with pytest.raises(HookAborted):
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_SimpleFlow().kickoff(inputs={"id": pinned_id})
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crewai_event_bus.flush()
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assert seen_ids == [pinned_id]
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def test_input_redaction_shields_started_event_inputs(self):
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captured: list[dict | None] = []
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with crewai_event_bus.scoped_handlers():
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@crewai_event_bus.on(FlowStartedEvent)
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def capture(_source, event):
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captured.append(event.inputs)
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@on(InterceptionPoint.INPUT)
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def redact(ctx):
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return {**(ctx.payload or {}), "api_key": "[REDACTED]"}
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_SimpleFlow().kickoff(inputs={"api_key": "sk-live-secret"})
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crewai_event_bus.flush()
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assert captured == [{"api_key": "[REDACTED]"}]
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def test_abort_preserves_chained_hook_rewrite(self):
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# A replacement returned by an earlier hook lands on ctx.payload as
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# each hook runs; a later abort must not fall back to pre-hook inputs.
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seen_ids: list[str] = []
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captured: list[dict | None] = []
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rewritten_id = "0b8ee866-77b3-4dc6-9de4-90a92cbc9fcf"
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with crewai_event_bus.scoped_handlers():
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@crewai_event_bus.on(FlowStartedEvent)
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def capture(source, event):
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seen_ids.append(source.flow_id)
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captured.append(event.inputs)
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@on(InterceptionPoint.EXECUTION_START)
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def rewrite(ctx):
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return {**(ctx.payload or {}), "id": rewritten_id}
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@on(InterceptionPoint.EXECUTION_START)
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def block(_ctx):
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raise HookAborted(reason="denied")
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with pytest.raises(HookAborted):
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_SimpleFlow().kickoff(
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inputs={"id": "2f9deb0a-41c5-4f4e-9be9-3a5a34c4dc94"}
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)
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crewai_event_bus.flush()
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assert seen_ids == [rewritten_id]
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assert captured == [{"id": rewritten_id}]
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def test_abort_at_input_preserves_execution_start_rewrite(self):
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captured: list[dict | None] = []
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with crewai_event_bus.scoped_handlers():
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@crewai_event_bus.on(FlowStartedEvent)
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def capture(_source, event):
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captured.append(event.inputs)
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@on(InterceptionPoint.EXECUTION_START)
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def redact(ctx):
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return {**(ctx.payload or {}), "api_key": "[REDACTED]"}
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@on(InterceptionPoint.INPUT)
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def block(_ctx):
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raise HookAborted(reason="denied")
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with pytest.raises(HookAborted):
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_SimpleFlow().kickoff(inputs={"api_key": "sk-live-secret"})
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crewai_event_bus.flush()
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assert captured == [{"api_key": "[REDACTED]"}]
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def test_kickoff_emits_started_exactly_once(self):
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started: list[str] = []
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with crewai_event_bus.scoped_handlers():
|
|
|
|
@crewai_event_bus.on(FlowStartedEvent)
|
|
def capture(_source, event):
|
|
started.append(event.flow_name)
|
|
|
|
_SimpleFlow().kickoff()
|
|
crewai_event_bus.flush()
|
|
|
|
assert started == ["_SimpleFlow"]
|
|
|
|
def test_reentrant_kickoff_emits_started_once_per_invocation(self):
|
|
started: list[str] = []
|
|
|
|
with crewai_event_bus.scoped_handlers():
|
|
|
|
@crewai_event_bus.on(FlowStartedEvent)
|
|
def capture(_source, event):
|
|
started.append(event.flow_name)
|
|
|
|
with pytest.raises(RuntimeError, match="outer boom"):
|
|
_ReentrantFailingFlow().kickoff()
|
|
crewai_event_bus.flush()
|
|
|
|
# One started per kickoff invocation: outer run + its nested kickoff.
|
|
assert started == ["_ReentrantFailingFlow", "_ReentrantFailingFlow"]
|
|
|
|
def test_deferred_session_deny_at_execution_start_keeps_session_open(self):
|
|
started: list[FlowStartedEvent] = []
|
|
failed: list[FlowFailedEvent] = []
|
|
finished: list[FlowFinishedEvent] = []
|
|
|
|
class _DeferredFlow(Flow):
|
|
defer_trace_finalization = True
|
|
|
|
@start()
|
|
def begin(self):
|
|
return "turn-result"
|
|
|
|
with crewai_event_bus.scoped_handlers():
|
|
|
|
@crewai_event_bus.on(FlowStartedEvent)
|
|
def on_started(_source, event):
|
|
started.append(event)
|
|
|
|
@crewai_event_bus.on(FlowFailedEvent)
|
|
def on_failed(_source, event):
|
|
failed.append(event)
|
|
|
|
@crewai_event_bus.on(FlowFinishedEvent)
|
|
def on_finished(_source, event):
|
|
finished.append(event)
|
|
|
|
@on(InterceptionPoint.EXECUTION_START)
|
|
def block(ctx):
|
|
raise HookAborted(reason="denied")
|
|
|
|
flow = _DeferredFlow()
|
|
with pytest.raises(HookAborted):
|
|
flow.kickoff()
|
|
crewai_event_bus.flush()
|
|
|
|
# Deferred sessions suppress per-turn terminal events; the
|
|
# session stays open under the already-emitted started event.
|
|
assert len(started) == 1
|
|
assert failed == []
|
|
assert finished == []
|
|
|
|
clear_all()
|
|
assert flow.kickoff() == "turn-result"
|
|
flow.finalize_session_traces()
|
|
crewai_event_bus.flush()
|
|
|
|
assert len(started) == 1
|
|
assert failed == []
|
|
assert len(finished) == 1
|
|
assert finished[0].started_event_id == started[0].event_id
|