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2 Commits

Author SHA1 Message Date
Devin AI
9b47afbee0 chore: trigger CI re-run
Co-Authored-By: João <joao@crewai.com>
2026-01-16 18:55:05 +00:00
Devin AI
1dd566311e feat: add debug logging when OutputParserError triggers agent retry
This addresses issue #4246 by adding optional debug logging that captures:
- The raw LLM output that failed to parse (truncated to 500 chars)
- The specific parsing error message
- Retry count per agent turn
- Agent role context for easier debugging

The debug logging is controlled by Python's standard logging module at DEBUG level,
allowing users to enable it via environment variables or log configuration.

Changes:
- Modified handle_output_parser_exception() in agent_utils.py to accept raw_output
  and agent_role parameters for debug logging
- Updated CrewAgentExecutor._invoke_loop() and _ainvoke_loop() to pass raw output
  and agent role to the exception handler
- Updated LiteAgent._invoke_loop() to pass raw output and agent role
- Added comprehensive tests for the new debug logging functionality

Co-Authored-By: João <joao@crewai.com>
2026-01-16 18:51:36 +00:00
21 changed files with 1597 additions and 2803 deletions

View File

@@ -1,7 +1,7 @@
from __future__ import annotations
import asyncio
from collections.abc import Callable, Coroutine, Sequence
from collections.abc import Callable, Sequence
import shutil
import subprocess
import time
@@ -34,11 +34,6 @@ from crewai.agents.agent_builder.base_agent import BaseAgent
from crewai.agents.cache.cache_handler import CacheHandler
from crewai.agents.crew_agent_executor import CrewAgentExecutor
from crewai.events.event_bus import crewai_event_bus
from crewai.events.types.agent_events import (
LiteAgentExecutionCompletedEvent,
LiteAgentExecutionErrorEvent,
LiteAgentExecutionStartedEvent,
)
from crewai.events.types.knowledge_events import (
KnowledgeQueryCompletedEvent,
KnowledgeQueryFailedEvent,
@@ -48,10 +43,10 @@ from crewai.events.types.memory_events import (
MemoryRetrievalCompletedEvent,
MemoryRetrievalStartedEvent,
)
from crewai.experimental.agent_executor import AgentExecutor
from crewai.experimental.crew_agent_executor_flow import CrewAgentExecutorFlow
from crewai.knowledge.knowledge import Knowledge
from crewai.knowledge.source.base_knowledge_source import BaseKnowledgeSource
from crewai.lite_agent_output import LiteAgentOutput
from crewai.lite_agent import LiteAgent
from crewai.llms.base_llm import BaseLLM
from crewai.mcp import (
MCPClient,
@@ -69,18 +64,15 @@ from crewai.security.fingerprint import Fingerprint
from crewai.tools.agent_tools.agent_tools import AgentTools
from crewai.utilities.agent_utils import (
get_tool_names,
is_inside_event_loop,
load_agent_from_repository,
parse_tools,
render_text_description_and_args,
)
from crewai.utilities.constants import TRAINED_AGENTS_DATA_FILE, TRAINING_DATA_FILE
from crewai.utilities.converter import Converter, ConverterError
from crewai.utilities.guardrail import process_guardrail
from crewai.utilities.converter import Converter
from crewai.utilities.guardrail_types import GuardrailType
from crewai.utilities.llm_utils import create_llm
from crewai.utilities.prompts import Prompts, StandardPromptResult, SystemPromptResult
from crewai.utilities.pydantic_schema_utils import generate_model_description
from crewai.utilities.token_counter_callback import TokenCalcHandler
from crewai.utilities.training_handler import CrewTrainingHandler
@@ -97,9 +89,9 @@ if TYPE_CHECKING:
from crewai_tools import CodeInterpreterTool
from crewai.agents.agent_builder.base_agent import PlatformAppOrAction
from crewai.lite_agent_output import LiteAgentOutput
from crewai.task import Task
from crewai.tools.base_tool import BaseTool
from crewai.tools.structured_tool import CrewStructuredTool
from crewai.utilities.types import LLMMessage
@@ -121,7 +113,7 @@ class Agent(BaseAgent):
The agent can also have memory, can operate in verbose mode, and can delegate tasks to other agents.
Attributes:
agent_executor: An instance of the CrewAgentExecutor or AgentExecutor class.
agent_executor: An instance of the CrewAgentExecutor or CrewAgentExecutorFlow class.
role: The role of the agent.
goal: The objective of the agent.
backstory: The backstory of the agent.
@@ -246,9 +238,9 @@ class Agent(BaseAgent):
Can be a single A2AConfig/A2AClientConfig/A2AServerConfig, or a list of any number of A2AConfig/A2AClientConfig with a single A2AServerConfig.
""",
)
executor_class: type[CrewAgentExecutor] | type[AgentExecutor] = Field(
executor_class: type[CrewAgentExecutor] | type[CrewAgentExecutorFlow] = Field(
default=CrewAgentExecutor,
description="Class to use for the agent executor. Defaults to CrewAgentExecutor, can optionally use AgentExecutor.",
description="Class to use for the agent executor. Defaults to CrewAgentExecutor, can optionally use CrewAgentExecutorFlow.",
)
@model_validator(mode="before")
@@ -1591,25 +1583,26 @@ class Agent(BaseAgent):
)
return None
def _prepare_kickoff(
def kickoff(
self,
messages: str | list[LLMMessage],
response_format: type[Any] | None = None,
) -> tuple[AgentExecutor, dict[str, str], dict[str, Any], list[CrewStructuredTool]]:
"""Prepare common setup for kickoff execution.
) -> LiteAgentOutput:
"""
Execute the agent with the given messages using a LiteAgent instance.
This method handles all the common preparation logic shared between
kickoff() and kickoff_async(), including tool processing, prompt building,
executor creation, and input formatting.
This method is useful when you want to use the Agent configuration but
with the simpler and more direct execution flow of LiteAgent.
Args:
messages: Either a string query or a list of message dictionaries.
If a string is provided, it will be converted to a user message.
If a list is provided, each dict should have 'role' and 'content' keys.
response_format: Optional Pydantic model for structured output.
Returns:
Tuple of (executor, inputs, agent_info, parsed_tools) ready for execution.
LiteAgentOutput: The result of the agent execution.
"""
# Process platform apps and MCP tools
if self.apps:
platform_tools = self.get_platform_tools(self.apps)
if platform_tools and self.tools is not None:
@@ -1619,359 +1612,25 @@ class Agent(BaseAgent):
if mcps and self.tools is not None:
self.tools.extend(mcps)
# Prepare tools
raw_tools: list[BaseTool] = self.tools or []
parsed_tools = parse_tools(raw_tools)
# Build agent_info for backward-compatible event emission
agent_info = {
"id": self.id,
"role": self.role,
"goal": self.goal,
"backstory": self.backstory,
"tools": raw_tools,
"verbose": self.verbose,
}
# Build prompt for standalone execution
prompt = Prompts(
agent=self,
has_tools=len(raw_tools) > 0,
i18n=self.i18n,
use_system_prompt=self.use_system_prompt,
system_template=self.system_template,
prompt_template=self.prompt_template,
response_template=self.response_template,
).task_execution()
# Prepare stop words
stop_words = [self.i18n.slice("observation")]
if self.response_template:
stop_words.append(
self.response_template.split("{{ .Response }}")[1].strip()
)
# Get RPM limit function
rpm_limit_fn = (
self._rpm_controller.check_or_wait if self._rpm_controller else None
)
# Create the executor for standalone mode (no crew, no task)
executor = AgentExecutor(
task=None,
crew=None,
llm=cast(BaseLLM, self.llm),
agent=self,
prompt=prompt,
max_iter=self.max_iter,
tools=parsed_tools,
tools_names=get_tool_names(parsed_tools),
stop_words=stop_words,
tools_description=render_text_description_and_args(parsed_tools),
tools_handler=self.tools_handler,
original_tools=raw_tools,
step_callback=self.step_callback,
function_calling_llm=self.function_calling_llm,
lite_agent = LiteAgent(
id=self.id,
role=self.role,
goal=self.goal,
backstory=self.backstory,
llm=self.llm,
tools=self.tools or [],
max_iterations=self.max_iter,
max_execution_time=self.max_execution_time,
respect_context_window=self.respect_context_window,
request_within_rpm_limit=rpm_limit_fn,
callbacks=[TokenCalcHandler(self._token_process)],
response_model=response_format,
verbose=self.verbose,
response_format=response_format,
i18n=self.i18n,
original_agent=self,
guardrail=self.guardrail,
guardrail_max_retries=self.guardrail_max_retries,
)
# Format messages
if isinstance(messages, str):
formatted_messages = messages
else:
formatted_messages = "\n".join(
str(msg.get("content", "")) for msg in messages if msg.get("content")
)
# Build the input dict for the executor
inputs = {
"input": formatted_messages,
"tool_names": get_tool_names(parsed_tools),
"tools": render_text_description_and_args(parsed_tools),
}
return executor, inputs, agent_info, parsed_tools
def kickoff(
self,
messages: str | list[LLMMessage],
response_format: type[Any] | None = None,
) -> LiteAgentOutput | Coroutine[Any, Any, LiteAgentOutput]:
"""
Execute the agent with the given messages using the AgentExecutor.
This method provides standalone agent execution without requiring a Crew.
It supports tools, response formatting, and guardrails.
When called from within a Flow (sync or async method), this automatically
detects the event loop and returns a coroutine that the Flow framework
awaits. Users don't need to handle async explicitly.
Args:
messages: Either a string query or a list of message dictionaries.
If a string is provided, it will be converted to a user message.
If a list is provided, each dict should have 'role' and 'content' keys.
response_format: Optional Pydantic model for structured output.
Returns:
LiteAgentOutput: The result of the agent execution.
When inside a Flow, returns a coroutine that resolves to LiteAgentOutput.
Note:
For explicit async usage outside of Flow, use kickoff_async() directly.
"""
# Magic auto-async: if inside event loop (e.g., inside a Flow),
# return coroutine for Flow to await
if is_inside_event_loop():
return self.kickoff_async(messages, response_format)
executor, inputs, agent_info, parsed_tools = self._prepare_kickoff(
messages, response_format
)
try:
crewai_event_bus.emit(
self,
event=LiteAgentExecutionStartedEvent(
agent_info=agent_info,
tools=parsed_tools,
messages=messages,
),
)
output = self._execute_and_build_output(executor, inputs, response_format)
if self.guardrail is not None:
output = self._process_kickoff_guardrail(
output=output,
executor=executor,
inputs=inputs,
response_format=response_format,
)
crewai_event_bus.emit(
self,
event=LiteAgentExecutionCompletedEvent(
agent_info=agent_info,
output=output.raw,
),
)
return output
except Exception as e:
crewai_event_bus.emit(
self,
event=LiteAgentExecutionErrorEvent(
agent_info=agent_info,
error=str(e),
),
)
raise
def _execute_and_build_output(
self,
executor: AgentExecutor,
inputs: dict[str, str],
response_format: type[Any] | None = None,
) -> LiteAgentOutput:
"""Execute the agent and build the output object.
Args:
executor: The executor instance.
inputs: Input dictionary for execution.
response_format: Optional response format.
Returns:
LiteAgentOutput with raw output, formatted result, and metrics.
"""
import json
# Execute the agent (this is called from sync path, so invoke returns dict)
result = cast(dict[str, Any], executor.invoke(inputs))
raw_output = result.get("output", "")
# Handle response format conversion
formatted_result: BaseModel | None = None
if response_format:
try:
model_schema = generate_model_description(response_format)
schema = json.dumps(model_schema, indent=2)
instructions = self.i18n.slice("formatted_task_instructions").format(
output_format=schema
)
converter = Converter(
llm=self.llm,
text=raw_output,
model=response_format,
instructions=instructions,
)
conversion_result = converter.to_pydantic()
if isinstance(conversion_result, BaseModel):
formatted_result = conversion_result
except ConverterError:
pass # Keep raw output if conversion fails
# Get token usage metrics
if isinstance(self.llm, BaseLLM):
usage_metrics = self.llm.get_token_usage_summary()
else:
usage_metrics = self._token_process.get_summary()
return LiteAgentOutput(
raw=raw_output,
pydantic=formatted_result,
agent_role=self.role,
usage_metrics=usage_metrics.model_dump() if usage_metrics else None,
messages=executor.messages,
)
async def _execute_and_build_output_async(
self,
executor: AgentExecutor,
inputs: dict[str, str],
response_format: type[Any] | None = None,
) -> LiteAgentOutput:
"""Execute the agent asynchronously and build the output object.
This is the async version of _execute_and_build_output that uses
invoke_async() for native async execution within event loops.
Args:
executor: The executor instance.
inputs: Input dictionary for execution.
response_format: Optional response format.
Returns:
LiteAgentOutput with raw output, formatted result, and metrics.
"""
import json
# Execute the agent asynchronously
result = await executor.invoke_async(inputs)
raw_output = result.get("output", "")
# Handle response format conversion
formatted_result: BaseModel | None = None
if response_format:
try:
model_schema = generate_model_description(response_format)
schema = json.dumps(model_schema, indent=2)
instructions = self.i18n.slice("formatted_task_instructions").format(
output_format=schema
)
converter = Converter(
llm=self.llm,
text=raw_output,
model=response_format,
instructions=instructions,
)
conversion_result = converter.to_pydantic()
if isinstance(conversion_result, BaseModel):
formatted_result = conversion_result
except ConverterError:
pass # Keep raw output if conversion fails
# Get token usage metrics
if isinstance(self.llm, BaseLLM):
usage_metrics = self.llm.get_token_usage_summary()
else:
usage_metrics = self._token_process.get_summary()
return LiteAgentOutput(
raw=raw_output,
pydantic=formatted_result,
agent_role=self.role,
usage_metrics=usage_metrics.model_dump() if usage_metrics else None,
messages=executor.messages,
)
def _process_kickoff_guardrail(
self,
output: LiteAgentOutput,
executor: AgentExecutor,
inputs: dict[str, str],
response_format: type[Any] | None = None,
retry_count: int = 0,
) -> LiteAgentOutput:
"""Process guardrail for kickoff execution with retry logic.
Args:
output: Current agent output.
executor: The executor instance.
inputs: Input dictionary for re-execution.
response_format: Optional response format.
retry_count: Current retry count.
Returns:
Validated/updated output.
"""
from crewai.utilities.guardrail_types import GuardrailCallable
# Ensure guardrail is callable
guardrail_callable: GuardrailCallable
if isinstance(self.guardrail, str):
from crewai.tasks.llm_guardrail import LLMGuardrail
guardrail_callable = cast(
GuardrailCallable,
LLMGuardrail(description=self.guardrail, llm=cast(BaseLLM, self.llm)),
)
elif callable(self.guardrail):
guardrail_callable = self.guardrail
else:
# Should not happen if called from kickoff with guardrail check
return output
guardrail_result = process_guardrail(
output=output,
guardrail=guardrail_callable,
retry_count=retry_count,
event_source=self,
from_agent=self,
)
if not guardrail_result.success:
if retry_count >= self.guardrail_max_retries:
raise ValueError(
f"Agent's guardrail failed validation after {self.guardrail_max_retries} retries. "
f"Last error: {guardrail_result.error}"
)
# Add feedback and re-execute
executor._append_message_to_state(
guardrail_result.error or "Guardrail validation failed",
role="user",
)
# Re-execute and build new output
output = self._execute_and_build_output(executor, inputs, response_format)
# Recursively retry guardrail
return self._process_kickoff_guardrail(
output=output,
executor=executor,
inputs=inputs,
response_format=response_format,
retry_count=retry_count + 1,
)
# Apply guardrail result if available
if guardrail_result.result is not None:
if isinstance(guardrail_result.result, str):
output.raw = guardrail_result.result
elif isinstance(guardrail_result.result, BaseModel):
output.pydantic = guardrail_result.result
return output
return lite_agent.kickoff(messages)
async def kickoff_async(
self,
@@ -1979,11 +1638,9 @@ class Agent(BaseAgent):
response_format: type[Any] | None = None,
) -> LiteAgentOutput:
"""
Execute the agent asynchronously with the given messages.
Execute the agent asynchronously with the given messages using a LiteAgent instance.
This is the async version of the kickoff method that uses native async
execution. It is designed for use within async contexts, such as when
called from within an async Flow method.
This is the async version of the kickoff method.
Args:
messages: Either a string query or a list of message dictionaries.
@@ -1994,48 +1651,21 @@ class Agent(BaseAgent):
Returns:
LiteAgentOutput: The result of the agent execution.
"""
executor, inputs, agent_info, parsed_tools = self._prepare_kickoff(
messages, response_format
lite_agent = LiteAgent(
role=self.role,
goal=self.goal,
backstory=self.backstory,
llm=self.llm,
tools=self.tools or [],
max_iterations=self.max_iter,
max_execution_time=self.max_execution_time,
respect_context_window=self.respect_context_window,
verbose=self.verbose,
response_format=response_format,
i18n=self.i18n,
original_agent=self,
guardrail=self.guardrail,
guardrail_max_retries=self.guardrail_max_retries,
)
try:
crewai_event_bus.emit(
self,
event=LiteAgentExecutionStartedEvent(
agent_info=agent_info,
tools=parsed_tools,
messages=messages,
),
)
output = await self._execute_and_build_output_async(
executor, inputs, response_format
)
if self.guardrail is not None:
output = self._process_kickoff_guardrail(
output=output,
executor=executor,
inputs=inputs,
response_format=response_format,
)
crewai_event_bus.emit(
self,
event=LiteAgentExecutionCompletedEvent(
agent_info=agent_info,
output=output.raw,
),
)
return output
except Exception as e:
crewai_event_bus.emit(
self,
event=LiteAgentExecutionErrorEvent(
agent_info=agent_info,
error=str(e),
),
)
raise
return await lite_agent.kickoff_async(messages)

View File

@@ -21,9 +21,9 @@ if TYPE_CHECKING:
class CrewAgentExecutorMixin:
crew: Crew | None
crew: Crew
agent: Agent
task: Task | None
task: Task
iterations: int
max_iter: int
messages: list[LLMMessage]

View File

@@ -219,6 +219,7 @@ class CrewAgentExecutor(CrewAgentExecutorMixin):
Final answer from the agent.
"""
formatted_answer = None
last_raw_output: str | None = None
while not isinstance(formatted_answer, AgentFinish):
try:
if has_reached_max_iterations(self.iterations, self.max_iter):
@@ -244,6 +245,7 @@ class CrewAgentExecutor(CrewAgentExecutorMixin):
response_model=self.response_model,
executor_context=self,
)
last_raw_output = answer
if self.response_model is not None:
try:
self.response_model.model_validate_json(answer)
@@ -300,6 +302,8 @@ class CrewAgentExecutor(CrewAgentExecutorMixin):
iterations=self.iterations,
log_error_after=self.log_error_after,
printer=self._printer,
raw_output=last_raw_output,
agent_role=self.agent.role if self.agent else None,
)
except Exception as e:
@@ -386,6 +390,7 @@ class CrewAgentExecutor(CrewAgentExecutorMixin):
Final answer from the agent.
"""
formatted_answer = None
last_raw_output: str | None = None
while not isinstance(formatted_answer, AgentFinish):
try:
if has_reached_max_iterations(self.iterations, self.max_iter):
@@ -411,6 +416,7 @@ class CrewAgentExecutor(CrewAgentExecutorMixin):
response_model=self.response_model,
executor_context=self,
)
last_raw_output = answer
if self.response_model is not None:
try:
@@ -467,6 +473,8 @@ class CrewAgentExecutor(CrewAgentExecutorMixin):
iterations=self.iterations,
log_error_after=self.log_error_after,
printer=self._printer,
raw_output=last_raw_output,
agent_role=self.agent.role if self.agent else None,
)
except Exception as e:

View File

@@ -1,4 +1,4 @@
from crewai.experimental.agent_executor import AgentExecutor, CrewAgentExecutorFlow
from crewai.experimental.crew_agent_executor_flow import CrewAgentExecutorFlow
from crewai.experimental.evaluation import (
AgentEvaluationResult,
AgentEvaluator,
@@ -23,9 +23,8 @@ from crewai.experimental.evaluation import (
__all__ = [
"AgentEvaluationResult",
"AgentEvaluator",
"AgentExecutor",
"BaseEvaluator",
"CrewAgentExecutorFlow", # Deprecated alias for AgentExecutor
"CrewAgentExecutorFlow",
"EvaluationScore",
"EvaluationTraceCallback",
"ExperimentResult",

View File

@@ -1,6 +1,6 @@
from __future__ import annotations
from collections.abc import Callable, Coroutine
from collections.abc import Callable
import threading
from typing import TYPE_CHECKING, Any, Literal, cast
from uuid import uuid4
@@ -37,7 +37,6 @@ from crewai.utilities.agent_utils import (
handle_unknown_error,
has_reached_max_iterations,
is_context_length_exceeded,
is_inside_event_loop,
process_llm_response,
)
from crewai.utilities.constants import TRAINING_DATA_FILE
@@ -74,17 +73,13 @@ class AgentReActState(BaseModel):
ask_for_human_input: bool = Field(default=False)
class AgentExecutor(Flow[AgentReActState], CrewAgentExecutorMixin):
"""Flow-based agent executor for both standalone and crew-bound execution.
class CrewAgentExecutorFlow(Flow[AgentReActState], CrewAgentExecutorMixin):
"""Flow-based executor matching CrewAgentExecutor interface.
Inherits from:
- Flow[AgentReActState]: Provides flow orchestration capabilities
- CrewAgentExecutorMixin: Provides memory methods (short/long/external term)
This executor can operate in two modes:
- Standalone mode: When crew and task are None (used by Agent.kickoff())
- Crew mode: When crew and task are provided (used by Agent.execute_task())
Note: Multiple instances may be created during agent initialization
(cache setup, RPM controller setup, etc.) but only the final instance
should execute tasks via invoke().
@@ -93,6 +88,8 @@ class AgentExecutor(Flow[AgentReActState], CrewAgentExecutorMixin):
def __init__(
self,
llm: BaseLLM,
task: Task,
crew: Crew,
agent: Agent,
prompt: SystemPromptResult | StandardPromptResult,
max_iter: int,
@@ -101,8 +98,6 @@ class AgentExecutor(Flow[AgentReActState], CrewAgentExecutorMixin):
stop_words: list[str],
tools_description: str,
tools_handler: ToolsHandler,
task: Task | None = None,
crew: Crew | None = None,
step_callback: Any = None,
original_tools: list[BaseTool] | None = None,
function_calling_llm: BaseLLM | Any | None = None,
@@ -116,6 +111,8 @@ class AgentExecutor(Flow[AgentReActState], CrewAgentExecutorMixin):
Args:
llm: Language model instance.
task: Task to execute.
crew: Crew instance.
agent: Agent to execute.
prompt: Prompt templates.
max_iter: Maximum iterations.
@@ -124,8 +121,6 @@ class AgentExecutor(Flow[AgentReActState], CrewAgentExecutorMixin):
stop_words: Stop word list.
tools_description: Tool descriptions.
tools_handler: Tool handler instance.
task: Optional task to execute (None for standalone agent execution).
crew: Optional crew instance (None for standalone agent execution).
step_callback: Optional step callback.
original_tools: Original tool list.
function_calling_llm: Optional function calling LLM.
@@ -136,9 +131,9 @@ class AgentExecutor(Flow[AgentReActState], CrewAgentExecutorMixin):
"""
self._i18n: I18N = i18n or get_i18n()
self.llm = llm
self.task: Task | None = task
self.task = task
self.agent = agent
self.crew: Crew | None = crew
self.crew = crew
self.prompt = prompt
self.tools = tools
self.tools_names = tools_names
@@ -183,6 +178,7 @@ class AgentExecutor(Flow[AgentReActState], CrewAgentExecutorMixin):
else self.stop
)
)
self._state = AgentReActState()
def _ensure_flow_initialized(self) -> None:
@@ -268,7 +264,7 @@ class AgentExecutor(Flow[AgentReActState], CrewAgentExecutorMixin):
printer=self._printer,
from_task=self.task,
from_agent=self.agent,
response_model=None,
response_model=self.response_model,
executor_context=self,
)
@@ -453,99 +449,9 @@ class AgentExecutor(Flow[AgentReActState], CrewAgentExecutorMixin):
return "initialized"
def invoke(
self, inputs: dict[str, Any]
) -> dict[str, Any] | Coroutine[Any, Any, dict[str, Any]]:
def invoke(self, inputs: dict[str, Any]) -> dict[str, Any]:
"""Execute agent with given inputs.
When called from within an existing event loop (e.g., inside a Flow),
this method returns a coroutine that should be awaited. The Flow
framework handles this automatically.
Args:
inputs: Input dictionary containing prompt variables.
Returns:
Dictionary with agent output, or a coroutine if inside an event loop.
"""
# Magic auto-async: if inside event loop, return coroutine for Flow to await
if is_inside_event_loop():
return self.invoke_async(inputs)
self._ensure_flow_initialized()
with self._execution_lock:
if self._is_executing:
raise RuntimeError(
"Executor is already running. "
"Cannot invoke the same executor instance concurrently."
)
self._is_executing = True
self._has_been_invoked = True
try:
# Reset state for fresh execution
self.state.messages.clear()
self.state.iterations = 0
self.state.current_answer = None
self.state.is_finished = False
if "system" in self.prompt:
prompt = cast("SystemPromptResult", self.prompt)
system_prompt = self._format_prompt(prompt["system"], inputs)
user_prompt = self._format_prompt(prompt["user"], inputs)
self.state.messages.append(
format_message_for_llm(system_prompt, role="system")
)
self.state.messages.append(format_message_for_llm(user_prompt))
else:
user_prompt = self._format_prompt(self.prompt["prompt"], inputs)
self.state.messages.append(format_message_for_llm(user_prompt))
self.state.ask_for_human_input = bool(
inputs.get("ask_for_human_input", False)
)
self.kickoff()
formatted_answer = self.state.current_answer
if not isinstance(formatted_answer, AgentFinish):
raise RuntimeError(
"Agent execution ended without reaching a final answer."
)
if self.state.ask_for_human_input:
formatted_answer = self._handle_human_feedback(formatted_answer)
self._create_short_term_memory(formatted_answer)
self._create_long_term_memory(formatted_answer)
self._create_external_memory(formatted_answer)
return {"output": formatted_answer.output}
except AssertionError:
fail_text = Text()
fail_text.append("", style="red bold")
fail_text.append(
"Agent failed to reach a final answer. This is likely a bug - please report it.",
style="red",
)
self._console.print(fail_text)
raise
except Exception as e:
handle_unknown_error(self._printer, e)
raise
finally:
self._is_executing = False
async def invoke_async(self, inputs: dict[str, Any]) -> dict[str, Any]:
"""Execute agent asynchronously with given inputs.
This method is designed for use within async contexts, such as when
the agent is called from within an async Flow method. It uses
kickoff_async() directly instead of running in a separate thread.
Args:
inputs: Input dictionary containing prompt variables.
@@ -586,8 +492,7 @@ class AgentExecutor(Flow[AgentReActState], CrewAgentExecutorMixin):
inputs.get("ask_for_human_input", False)
)
# Use async kickoff directly since we're already in an async context
await self.kickoff_async()
self.kickoff()
formatted_answer = self.state.current_answer
@@ -678,14 +583,11 @@ class AgentExecutor(Flow[AgentReActState], CrewAgentExecutorMixin):
if self.agent is None:
raise ValueError("Agent cannot be None")
if self.task is None:
return
crewai_event_bus.emit(
self.agent,
AgentLogsStartedEvent(
agent_role=self.agent.role,
task_description=self.task.description,
task_description=(self.task.description if self.task else "Not Found"),
verbose=self.agent.verbose
or (hasattr(self, "crew") and getattr(self.crew, "verbose", False)),
),
@@ -719,12 +621,10 @@ class AgentExecutor(Flow[AgentReActState], CrewAgentExecutorMixin):
result: Agent's final output.
human_feedback: Optional feedback from human.
"""
# Early return if no crew (standalone mode)
if self.crew is None:
return
agent_id = str(self.agent.id)
train_iteration = getattr(self.crew, "_train_iteration", None)
train_iteration = (
getattr(self.crew, "_train_iteration", None) if self.crew else None
)
if train_iteration is None or not isinstance(train_iteration, int):
train_error = Text()
@@ -906,7 +806,3 @@ class AgentExecutor(Flow[AgentReActState], CrewAgentExecutorMixin):
requiring arbitrary_types_allowed=True.
"""
return core_schema.any_schema()
# Backward compatibility alias (deprecated)
CrewAgentExecutorFlow = AgentExecutor

View File

@@ -73,7 +73,6 @@ from crewai.flow.utils import (
is_simple_flow_condition,
)
if TYPE_CHECKING:
from crewai.flow.async_feedback.types import PendingFeedbackContext
from crewai.flow.human_feedback import HumanFeedbackResult
@@ -520,9 +519,6 @@ class Flow(Generic[T], metaclass=FlowMeta):
self._methods: dict[FlowMethodName, FlowMethod[Any, Any]] = {}
self._method_execution_counts: dict[FlowMethodName, int] = {}
self._pending_and_listeners: dict[PendingListenerKey, set[FlowMethodName]] = {}
self._fired_or_listeners: set[FlowMethodName] = (
set()
) # Track OR listeners that already fired
self._method_outputs: list[Any] = [] # list to store all method outputs
self._completed_methods: set[FlowMethodName] = (
set()
@@ -574,7 +570,7 @@ class Flow(Generic[T], metaclass=FlowMeta):
flow_id: str,
persistence: FlowPersistence | None = None,
**kwargs: Any,
) -> Flow[Any]:
) -> "Flow[Any]":
"""Create a Flow instance from a pending feedback state.
This classmethod is used to restore a flow that was paused waiting
@@ -635,7 +631,7 @@ class Flow(Generic[T], metaclass=FlowMeta):
return instance
@property
def pending_feedback(self) -> PendingFeedbackContext | None:
def pending_feedback(self) -> "PendingFeedbackContext | None":
"""Get the pending feedback context if this flow is waiting for feedback.
Returns:
@@ -720,9 +716,8 @@ class Flow(Generic[T], metaclass=FlowMeta):
Raises:
ValueError: If no pending feedback context exists
"""
from datetime import datetime
from crewai.flow.human_feedback import HumanFeedbackResult
from datetime import datetime
if self._pending_feedback_context is None:
raise ValueError(
@@ -1300,7 +1295,6 @@ class Flow(Generic[T], metaclass=FlowMeta):
self._completed_methods.clear()
self._method_outputs.clear()
self._pending_and_listeners.clear()
self._fired_or_listeners.clear()
else:
# We're restoring from persistence, set the flag
self._is_execution_resuming = True
@@ -1352,26 +1346,9 @@ class Flow(Generic[T], metaclass=FlowMeta):
self._initialize_state(inputs)
try:
# Determine which start methods to execute at kickoff
# Conditional start methods (with __trigger_methods__) are only triggered by their conditions
# UNLESS there are no unconditional starts (then all starts run as entry points)
unconditional_starts = [
start_method
for start_method in self._start_methods
if not getattr(
self._methods.get(start_method), "__trigger_methods__", None
)
]
# If there are unconditional starts, only run those at kickoff
# If there are NO unconditional starts, run all starts (including conditional ones)
starts_to_execute = (
unconditional_starts
if unconditional_starts
else self._start_methods
)
tasks = [
self._execute_start_method(start_method)
for start_method in starts_to_execute
for start_method in self._start_methods
]
await asyncio.gather(*tasks)
except Exception as e:
@@ -1504,8 +1481,6 @@ class Flow(Generic[T], metaclass=FlowMeta):
return
# For cyclic flows, clear from completed to allow re-execution
self._completed_methods.discard(start_method_name)
# Also clear fired OR listeners to allow them to fire again in new cycle
self._fired_or_listeners.clear()
method = self._methods[start_method_name]
enhanced_method = self._inject_trigger_payload_for_start_method(method)
@@ -1528,9 +1503,11 @@ class Flow(Generic[T], metaclass=FlowMeta):
if self.last_human_feedback is not None
else result
)
# Execute listeners sequentially to prevent race conditions on shared state
for listener_name in listeners_for_result:
await self._execute_single_listener(listener_name, listener_result)
tasks = [
self._execute_single_listener(listener_name, listener_result)
for listener_name in listeners_for_result
]
await asyncio.gather(*tasks)
else:
await self._execute_listeners(start_method_name, result)
@@ -1596,19 +1573,11 @@ class Flow(Generic[T], metaclass=FlowMeta):
if future:
self._event_futures.append(future)
if asyncio.iscoroutinefunction(method):
result = await method(*args, **kwargs)
else:
# Run sync methods in thread pool for isolation
# This allows Agent.kickoff() to work synchronously inside Flow methods
import contextvars
ctx = contextvars.copy_context()
result = await asyncio.to_thread(ctx.run, method, *args, **kwargs)
# Auto-await coroutines returned from sync methods (enables AgentExecutor pattern)
if asyncio.iscoroutine(result):
result = await result
result = (
await method(*args, **kwargs)
if asyncio.iscoroutinefunction(method)
else method(*args, **kwargs)
)
self._method_outputs.append(result)
self._method_execution_counts[method_name] = (
@@ -1755,11 +1724,11 @@ class Flow(Generic[T], metaclass=FlowMeta):
listener_result = router_result_to_feedback.get(
str(current_trigger), result
)
# Execute listeners sequentially to prevent race conditions on shared state
for listener_name in listeners_triggered:
await self._execute_single_listener(
listener_name, listener_result
)
tasks = [
self._execute_single_listener(listener_name, listener_result)
for listener_name in listeners_triggered
]
await asyncio.gather(*tasks)
if current_trigger in router_results:
# Find start methods triggered by this router result
@@ -1776,16 +1745,14 @@ class Flow(Generic[T], metaclass=FlowMeta):
should_trigger = current_trigger in all_methods
if should_trigger:
# Execute conditional start method triggered by router result
# Only execute if this is a cycle (method was already completed)
if method_name in self._completed_methods:
# For cyclic re-execution, temporarily clear resumption flag
# For router-triggered start methods in cycles, temporarily clear resumption flag
# to allow cyclic execution
was_resuming = self._is_execution_resuming
self._is_execution_resuming = False
await self._execute_start_method(method_name)
self._is_execution_resuming = was_resuming
else:
# First-time execution of conditional start
await self._execute_start_method(method_name)
def _evaluate_condition(
self,
@@ -1883,21 +1850,8 @@ class Flow(Generic[T], metaclass=FlowMeta):
condition_type, methods = condition_data
if condition_type == OR_CONDITION:
# Only trigger multi-source OR listeners (or_(A, B, C)) once - skip if already fired
# Simple single-method listeners fire every time their trigger occurs
# Routers also fire every time - they're decision points
has_multiple_triggers = len(methods) > 1
should_check_fired = has_multiple_triggers and not is_router
if (
not should_check_fired
or listener_name not in self._fired_or_listeners
):
if trigger_method in methods:
triggered.append(listener_name)
# Only track multi-source OR listeners (not single-method or routers)
if should_check_fired:
self._fired_or_listeners.add(listener_name)
if trigger_method in methods:
triggered.append(listener_name)
elif condition_type == AND_CONDITION:
pending_key = PendingListenerKey(listener_name)
if pending_key not in self._pending_and_listeners:
@@ -1910,26 +1864,10 @@ class Flow(Generic[T], metaclass=FlowMeta):
self._pending_and_listeners.pop(pending_key, None)
elif is_flow_condition_dict(condition_data):
# For complex conditions, check if top-level is OR and track accordingly
top_level_type = condition_data.get("type", OR_CONDITION)
is_or_based = top_level_type == OR_CONDITION
# Only track multi-source OR conditions (multiple sub-conditions), not routers
sub_conditions = condition_data.get("conditions", [])
has_multiple_triggers = is_or_based and len(sub_conditions) > 1
should_check_fired = has_multiple_triggers and not is_router
# Skip compound OR-based listeners that have already fired
if should_check_fired and listener_name in self._fired_or_listeners:
continue
if self._evaluate_condition(
condition_data, trigger_method, listener_name
):
triggered.append(listener_name)
# Track compound OR-based listeners so they only fire once
if should_check_fired:
self._fired_or_listeners.add(listener_name)
return triggered
@@ -1958,22 +1896,9 @@ class Flow(Generic[T], metaclass=FlowMeta):
if self._is_execution_resuming:
# During resumption, skip execution but continue listeners
await self._execute_listeners(listener_name, None)
# For routers, also check if any conditional starts they triggered are completed
# If so, continue their chains
if listener_name in self._routers:
for start_method_name in self._start_methods:
if (
start_method_name in self._listeners
and start_method_name in self._completed_methods
):
# This conditional start was executed, continue its chain
await self._execute_start_method(start_method_name)
return
# For cyclic flows, clear from completed to allow re-execution
self._completed_methods.discard(listener_name)
# Also clear from fired OR listeners for cyclic flows
self._fired_or_listeners.discard(listener_name)
try:
method = self._methods[listener_name]
@@ -2006,9 +1931,11 @@ class Flow(Generic[T], metaclass=FlowMeta):
if self.last_human_feedback is not None
else listener_result
)
# Execute listeners sequentially to prevent race conditions on shared state
for name in listeners_for_result:
await self._execute_single_listener(name, feedback_result)
tasks = [
self._execute_single_listener(name, feedback_result)
for name in listeners_for_result
]
await asyncio.gather(*tasks)
except Exception as e:
# Don't log HumanFeedbackPending as an error - it's expected control flow

View File

@@ -10,7 +10,6 @@ from typing import (
get_origin,
)
import uuid
import warnings
from pydantic import (
UUID4,
@@ -81,11 +80,6 @@ class LiteAgent(FlowTrackable, BaseModel):
"""
A lightweight agent that can process messages and use tools.
.. deprecated::
LiteAgent is deprecated and will be removed in a future version.
Use ``Agent().kickoff(messages)`` instead, which provides the same
functionality with additional features like memory and knowledge support.
This agent is simpler than the full Agent class, focusing on direct execution
rather than task delegation. It's designed to be used for simple interactions
where a full crew is not needed.
@@ -170,18 +164,6 @@ class LiteAgent(FlowTrackable, BaseModel):
default_factory=get_after_llm_call_hooks
)
@model_validator(mode="after")
def emit_deprecation_warning(self) -> Self:
"""Emit deprecation warning for LiteAgent usage."""
warnings.warn(
"LiteAgent is deprecated and will be removed in a future version. "
"Use Agent().kickoff(messages) instead, which provides the same "
"functionality with additional features like memory and knowledge support.",
DeprecationWarning,
stacklevel=2,
)
return self
@model_validator(mode="after")
def setup_llm(self) -> Self:
"""Set up the LLM and other components after initialization."""
@@ -551,6 +533,7 @@ class LiteAgent(FlowTrackable, BaseModel):
"""
# Execute the agent loop
formatted_answer: AgentAction | AgentFinish | None = None
last_raw_output: str | None = None
while not isinstance(formatted_answer, AgentFinish):
try:
if has_reached_max_iterations(self._iterations, self.max_iterations):
@@ -574,6 +557,7 @@ class LiteAgent(FlowTrackable, BaseModel):
from_agent=self,
executor_context=self,
)
last_raw_output = answer
except Exception as e:
raise e
@@ -612,6 +596,8 @@ class LiteAgent(FlowTrackable, BaseModel):
iterations=self._iterations,
log_error_after=3,
printer=self._printer,
raw_output=last_raw_output,
agent_role=self.role,
)
except Exception as e:

View File

@@ -1,8 +1,8 @@
from __future__ import annotations
import asyncio
from collections.abc import Callable, Sequence
import json
import logging
import re
from typing import TYPE_CHECKING, Any, Final, Literal, TypedDict
@@ -52,26 +52,11 @@ class SummaryContent(TypedDict):
console = Console()
logger = logging.getLogger(__name__)
_MULTIPLE_NEWLINES: Final[re.Pattern[str]] = re.compile(r"\n+")
def is_inside_event_loop() -> bool:
"""Check if code is currently running inside an asyncio event loop.
This is used to detect when code is being called from within an async context
(e.g., inside a Flow). In such cases, callers should return a coroutine
instead of executing synchronously to avoid nested event loop errors.
Returns:
True if inside a running event loop, False otherwise.
"""
try:
asyncio.get_running_loop()
return True
except RuntimeError:
return False
def parse_tools(tools: list[BaseTool]) -> list[CrewStructuredTool]:
"""Parse tools to be used for the task.
@@ -448,6 +433,8 @@ def handle_output_parser_exception(
iterations: int,
log_error_after: int = 3,
printer: Printer | None = None,
raw_output: str | None = None,
agent_role: str | None = None,
) -> AgentAction:
"""Handle OutputParserError by updating messages and formatted_answer.
@@ -457,6 +444,8 @@ def handle_output_parser_exception(
iterations: Current iteration count
log_error_after: Number of iterations after which to log errors
printer: Optional printer instance for logging
raw_output: The raw LLM output that failed to parse
agent_role: The role of the agent for logging context
Returns:
AgentAction: A formatted answer with the error
@@ -470,6 +459,27 @@ def handle_output_parser_exception(
thought="",
)
retry_count = iterations + 1
agent_context = f" for agent '{agent_role}'" if agent_role else ""
logger.debug(
"Parse failed%s: %s",
agent_context,
e.error.split("\n")[0],
)
if raw_output is not None:
truncated_output = (
raw_output[:500] + "..." if len(raw_output) > 500 else raw_output
)
logger.debug(
"Raw output (truncated)%s: %s",
agent_context,
truncated_output.replace("\n", "\\n"),
)
logger.debug("Retry %d initiated%s", retry_count, agent_context)
if iterations > log_error_after and printer:
printer.print(
content=f"Error parsing LLM output, agent will retry: {e.error}",

View File

@@ -1,4 +1,4 @@
"""Unit tests for AgentExecutor.
"""Unit tests for CrewAgentExecutorFlow.
Tests the Flow-based agent executor implementation including state management,
flow methods, routing logic, and error handling.
@@ -8,9 +8,9 @@ from unittest.mock import Mock, patch
import pytest
from crewai.experimental.agent_executor import (
from crewai.experimental.crew_agent_executor_flow import (
AgentReActState,
AgentExecutor,
CrewAgentExecutorFlow,
)
from crewai.agents.parser import AgentAction, AgentFinish
@@ -43,8 +43,8 @@ class TestAgentReActState:
assert state.ask_for_human_input is True
class TestAgentExecutor:
"""Test AgentExecutor class."""
class TestCrewAgentExecutorFlow:
"""Test CrewAgentExecutorFlow class."""
@pytest.fixture
def mock_dependencies(self):
@@ -87,8 +87,8 @@ class TestAgentExecutor:
}
def test_executor_initialization(self, mock_dependencies):
"""Test AgentExecutor initialization."""
executor = AgentExecutor(**mock_dependencies)
"""Test CrewAgentExecutorFlow initialization."""
executor = CrewAgentExecutorFlow(**mock_dependencies)
assert executor.llm == mock_dependencies["llm"]
assert executor.task == mock_dependencies["task"]
@@ -100,9 +100,9 @@ class TestAgentExecutor:
def test_initialize_reasoning(self, mock_dependencies):
"""Test flow entry point."""
with patch.object(
AgentExecutor, "_show_start_logs"
CrewAgentExecutorFlow, "_show_start_logs"
) as mock_show_start:
executor = AgentExecutor(**mock_dependencies)
executor = CrewAgentExecutorFlow(**mock_dependencies)
result = executor.initialize_reasoning()
assert result == "initialized"
@@ -110,7 +110,7 @@ class TestAgentExecutor:
def test_check_max_iterations_not_reached(self, mock_dependencies):
"""Test routing when iterations < max."""
executor = AgentExecutor(**mock_dependencies)
executor = CrewAgentExecutorFlow(**mock_dependencies)
executor.state.iterations = 5
result = executor.check_max_iterations()
@@ -118,7 +118,7 @@ class TestAgentExecutor:
def test_check_max_iterations_reached(self, mock_dependencies):
"""Test routing when iterations >= max."""
executor = AgentExecutor(**mock_dependencies)
executor = CrewAgentExecutorFlow(**mock_dependencies)
executor.state.iterations = 10
result = executor.check_max_iterations()
@@ -126,7 +126,7 @@ class TestAgentExecutor:
def test_route_by_answer_type_action(self, mock_dependencies):
"""Test routing for AgentAction."""
executor = AgentExecutor(**mock_dependencies)
executor = CrewAgentExecutorFlow(**mock_dependencies)
executor.state.current_answer = AgentAction(
thought="thinking", tool="search", tool_input="query", text="action text"
)
@@ -136,7 +136,7 @@ class TestAgentExecutor:
def test_route_by_answer_type_finish(self, mock_dependencies):
"""Test routing for AgentFinish."""
executor = AgentExecutor(**mock_dependencies)
executor = CrewAgentExecutorFlow(**mock_dependencies)
executor.state.current_answer = AgentFinish(
thought="final thoughts", output="Final answer", text="complete"
)
@@ -146,7 +146,7 @@ class TestAgentExecutor:
def test_continue_iteration(self, mock_dependencies):
"""Test iteration continuation."""
executor = AgentExecutor(**mock_dependencies)
executor = CrewAgentExecutorFlow(**mock_dependencies)
result = executor.continue_iteration()
@@ -154,8 +154,8 @@ class TestAgentExecutor:
def test_finalize_success(self, mock_dependencies):
"""Test finalize with valid AgentFinish."""
with patch.object(AgentExecutor, "_show_logs") as mock_show_logs:
executor = AgentExecutor(**mock_dependencies)
with patch.object(CrewAgentExecutorFlow, "_show_logs") as mock_show_logs:
executor = CrewAgentExecutorFlow(**mock_dependencies)
executor.state.current_answer = AgentFinish(
thought="final thinking", output="Done", text="complete"
)
@@ -168,7 +168,7 @@ class TestAgentExecutor:
def test_finalize_failure(self, mock_dependencies):
"""Test finalize skips when given AgentAction instead of AgentFinish."""
executor = AgentExecutor(**mock_dependencies)
executor = CrewAgentExecutorFlow(**mock_dependencies)
executor.state.current_answer = AgentAction(
thought="thinking", tool="search", tool_input="query", text="action text"
)
@@ -181,7 +181,7 @@ class TestAgentExecutor:
def test_format_prompt(self, mock_dependencies):
"""Test prompt formatting."""
executor = AgentExecutor(**mock_dependencies)
executor = CrewAgentExecutorFlow(**mock_dependencies)
inputs = {"input": "test input", "tool_names": "tool1, tool2", "tools": "desc"}
result = executor._format_prompt("Prompt {input} {tool_names} {tools}", inputs)
@@ -192,18 +192,18 @@ class TestAgentExecutor:
def test_is_training_mode_false(self, mock_dependencies):
"""Test training mode detection when not in training."""
executor = AgentExecutor(**mock_dependencies)
executor = CrewAgentExecutorFlow(**mock_dependencies)
assert executor._is_training_mode() is False
def test_is_training_mode_true(self, mock_dependencies):
"""Test training mode detection when in training."""
mock_dependencies["crew"]._train = True
executor = AgentExecutor(**mock_dependencies)
executor = CrewAgentExecutorFlow(**mock_dependencies)
assert executor._is_training_mode() is True
def test_append_message_to_state(self, mock_dependencies):
"""Test message appending to state."""
executor = AgentExecutor(**mock_dependencies)
executor = CrewAgentExecutorFlow(**mock_dependencies)
initial_count = len(executor.state.messages)
executor._append_message_to_state("test message")
@@ -216,7 +216,7 @@ class TestAgentExecutor:
callback = Mock()
mock_dependencies["step_callback"] = callback
executor = AgentExecutor(**mock_dependencies)
executor = CrewAgentExecutorFlow(**mock_dependencies)
answer = AgentFinish(thought="thinking", output="test", text="final")
executor._invoke_step_callback(answer)
@@ -226,14 +226,14 @@ class TestAgentExecutor:
def test_invoke_step_callback_none(self, mock_dependencies):
"""Test step callback when none provided."""
mock_dependencies["step_callback"] = None
executor = AgentExecutor(**mock_dependencies)
executor = CrewAgentExecutorFlow(**mock_dependencies)
# Should not raise error
executor._invoke_step_callback(
AgentFinish(thought="thinking", output="test", text="final")
)
@patch("crewai.experimental.agent_executor.handle_output_parser_exception")
@patch("crewai.experimental.crew_agent_executor_flow.handle_output_parser_exception")
def test_recover_from_parser_error(
self, mock_handle_exception, mock_dependencies
):
@@ -242,7 +242,7 @@ class TestAgentExecutor:
mock_handle_exception.return_value = None
executor = AgentExecutor(**mock_dependencies)
executor = CrewAgentExecutorFlow(**mock_dependencies)
executor._last_parser_error = OutputParserError("test error")
initial_iterations = executor.state.iterations
@@ -252,12 +252,12 @@ class TestAgentExecutor:
assert executor.state.iterations == initial_iterations + 1
mock_handle_exception.assert_called_once()
@patch("crewai.experimental.agent_executor.handle_context_length")
@patch("crewai.experimental.crew_agent_executor_flow.handle_context_length")
def test_recover_from_context_length(
self, mock_handle_context, mock_dependencies
):
"""Test recovery from context length error."""
executor = AgentExecutor(**mock_dependencies)
executor = CrewAgentExecutorFlow(**mock_dependencies)
executor._last_context_error = Exception("context too long")
initial_iterations = executor.state.iterations
@@ -270,16 +270,16 @@ class TestAgentExecutor:
def test_use_stop_words_property(self, mock_dependencies):
"""Test use_stop_words property."""
mock_dependencies["llm"].supports_stop_words.return_value = True
executor = AgentExecutor(**mock_dependencies)
executor = CrewAgentExecutorFlow(**mock_dependencies)
assert executor.use_stop_words is True
mock_dependencies["llm"].supports_stop_words.return_value = False
executor = AgentExecutor(**mock_dependencies)
executor = CrewAgentExecutorFlow(**mock_dependencies)
assert executor.use_stop_words is False
def test_compatibility_properties(self, mock_dependencies):
"""Test compatibility properties for mixin."""
executor = AgentExecutor(**mock_dependencies)
executor = CrewAgentExecutorFlow(**mock_dependencies)
executor.state.messages = [{"role": "user", "content": "test"}]
executor.state.iterations = 5
@@ -321,8 +321,8 @@ class TestFlowErrorHandling:
"tools_handler": Mock(),
}
@patch("crewai.experimental.agent_executor.get_llm_response")
@patch("crewai.experimental.agent_executor.enforce_rpm_limit")
@patch("crewai.experimental.crew_agent_executor_flow.get_llm_response")
@patch("crewai.experimental.crew_agent_executor_flow.enforce_rpm_limit")
def test_call_llm_parser_error(
self, mock_enforce_rpm, mock_get_llm, mock_dependencies
):
@@ -332,15 +332,15 @@ class TestFlowErrorHandling:
mock_enforce_rpm.return_value = None
mock_get_llm.side_effect = OutputParserError("parse failed")
executor = AgentExecutor(**mock_dependencies)
executor = CrewAgentExecutorFlow(**mock_dependencies)
result = executor.call_llm_and_parse()
assert result == "parser_error"
assert executor._last_parser_error is not None
@patch("crewai.experimental.agent_executor.get_llm_response")
@patch("crewai.experimental.agent_executor.enforce_rpm_limit")
@patch("crewai.experimental.agent_executor.is_context_length_exceeded")
@patch("crewai.experimental.crew_agent_executor_flow.get_llm_response")
@patch("crewai.experimental.crew_agent_executor_flow.enforce_rpm_limit")
@patch("crewai.experimental.crew_agent_executor_flow.is_context_length_exceeded")
def test_call_llm_context_error(
self,
mock_is_context_exceeded,
@@ -353,7 +353,7 @@ class TestFlowErrorHandling:
mock_get_llm.side_effect = Exception("context length")
mock_is_context_exceeded.return_value = True
executor = AgentExecutor(**mock_dependencies)
executor = CrewAgentExecutorFlow(**mock_dependencies)
result = executor.call_llm_and_parse()
assert result == "context_error"
@@ -397,10 +397,10 @@ class TestFlowInvoke:
"tools_handler": Mock(),
}
@patch.object(AgentExecutor, "kickoff")
@patch.object(AgentExecutor, "_create_short_term_memory")
@patch.object(AgentExecutor, "_create_long_term_memory")
@patch.object(AgentExecutor, "_create_external_memory")
@patch.object(CrewAgentExecutorFlow, "kickoff")
@patch.object(CrewAgentExecutorFlow, "_create_short_term_memory")
@patch.object(CrewAgentExecutorFlow, "_create_long_term_memory")
@patch.object(CrewAgentExecutorFlow, "_create_external_memory")
def test_invoke_success(
self,
mock_external_memory,
@@ -410,7 +410,7 @@ class TestFlowInvoke:
mock_dependencies,
):
"""Test successful invoke without human feedback."""
executor = AgentExecutor(**mock_dependencies)
executor = CrewAgentExecutorFlow(**mock_dependencies)
# Mock kickoff to set the final answer in state
def mock_kickoff_side_effect():
@@ -429,10 +429,10 @@ class TestFlowInvoke:
mock_long_term_memory.assert_called_once()
mock_external_memory.assert_called_once()
@patch.object(AgentExecutor, "kickoff")
@patch.object(CrewAgentExecutorFlow, "kickoff")
def test_invoke_failure_no_agent_finish(self, mock_kickoff, mock_dependencies):
"""Test invoke fails without AgentFinish."""
executor = AgentExecutor(**mock_dependencies)
executor = CrewAgentExecutorFlow(**mock_dependencies)
executor.state.current_answer = AgentAction(
thought="thinking", tool="test", tool_input="test", text="action text"
)
@@ -442,10 +442,10 @@ class TestFlowInvoke:
with pytest.raises(RuntimeError, match="without reaching a final answer"):
executor.invoke(inputs)
@patch.object(AgentExecutor, "kickoff")
@patch.object(AgentExecutor, "_create_short_term_memory")
@patch.object(AgentExecutor, "_create_long_term_memory")
@patch.object(AgentExecutor, "_create_external_memory")
@patch.object(CrewAgentExecutorFlow, "kickoff")
@patch.object(CrewAgentExecutorFlow, "_create_short_term_memory")
@patch.object(CrewAgentExecutorFlow, "_create_long_term_memory")
@patch.object(CrewAgentExecutorFlow, "_create_external_memory")
def test_invoke_with_system_prompt(
self,
mock_external_memory,
@@ -459,7 +459,7 @@ class TestFlowInvoke:
"system": "System: {input}",
"user": "User: {input} {tool_names} {tools}",
}
executor = AgentExecutor(**mock_dependencies)
executor = CrewAgentExecutorFlow(**mock_dependencies)
def mock_kickoff_side_effect():
executor.state.current_answer = AgentFinish(

View File

@@ -72,53 +72,62 @@ class ResearchResult(BaseModel):
@pytest.mark.vcr()
@pytest.mark.parametrize("verbose", [True, False])
def test_agent_kickoff_preserves_parameters(verbose):
"""Test that Agent.kickoff() uses the correct parameters from the Agent."""
def test_lite_agent_created_with_correct_parameters(monkeypatch, verbose):
"""Test that LiteAgent is created with the correct parameters when Agent.kickoff() is called."""
# Create a test agent with specific parameters
mock_llm = Mock(spec=LLM)
mock_llm.call.return_value = "Final Answer: Test response"
mock_llm.stop = []
from crewai.types.usage_metrics import UsageMetrics
mock_usage_metrics = UsageMetrics(
total_tokens=100,
prompt_tokens=50,
completion_tokens=50,
cached_prompt_tokens=0,
successful_requests=1,
)
mock_llm.get_token_usage_summary.return_value = mock_usage_metrics
llm = LLM(model="gpt-4o-mini")
custom_tools = [WebSearchTool(), CalculatorTool()]
max_iter = 10
max_execution_time = 300
agent = Agent(
role="Test Agent",
goal="Test Goal",
backstory="Test Backstory",
llm=mock_llm,
llm=llm,
tools=custom_tools,
max_iter=max_iter,
max_execution_time=max_execution_time,
verbose=verbose,
)
# Call kickoff and verify it works
result = agent.kickoff("Test query")
# Create a mock to capture the created LiteAgent
created_lite_agent = None
original_lite_agent = LiteAgent
# Verify the agent was configured correctly
assert agent.role == "Test Agent"
assert agent.goal == "Test Goal"
assert agent.backstory == "Test Backstory"
assert len(agent.tools) == 2
assert isinstance(agent.tools[0], WebSearchTool)
assert isinstance(agent.tools[1], CalculatorTool)
assert agent.max_iter == max_iter
assert agent.verbose == verbose
# Define a mock LiteAgent class that captures its arguments
class MockLiteAgent(original_lite_agent):
def __init__(self, **kwargs):
nonlocal created_lite_agent
created_lite_agent = kwargs
super().__init__(**kwargs)
# Verify kickoff returned a result
assert result is not None
assert result.raw is not None
# Patch the LiteAgent class
monkeypatch.setattr("crewai.agent.core.LiteAgent", MockLiteAgent)
# Call kickoff to create the LiteAgent
agent.kickoff("Test query")
# Verify all parameters were passed correctly
assert created_lite_agent is not None
assert created_lite_agent["role"] == "Test Agent"
assert created_lite_agent["goal"] == "Test Goal"
assert created_lite_agent["backstory"] == "Test Backstory"
assert created_lite_agent["llm"] == llm
assert len(created_lite_agent["tools"]) == 2
assert isinstance(created_lite_agent["tools"][0], WebSearchTool)
assert isinstance(created_lite_agent["tools"][1], CalculatorTool)
assert created_lite_agent["max_iterations"] == max_iter
assert created_lite_agent["max_execution_time"] == max_execution_time
assert created_lite_agent["verbose"] == verbose
assert created_lite_agent["response_format"] is None
# Test with a response_format
class TestResponse(BaseModel):
test_field: str
agent.kickoff("Test query", response_format=TestResponse)
assert created_lite_agent["response_format"] == TestResponse
@pytest.mark.vcr()
@@ -301,8 +310,7 @@ def verify_agent_parent_flow(result, agent, flow):
def test_sets_parent_flow_when_inside_flow():
"""Test that an Agent can be created and executed inside a Flow context."""
captured_event = None
captured_agent = None
mock_llm = Mock(spec=LLM)
mock_llm.call.return_value = "Test response"
@@ -335,17 +343,15 @@ def test_sets_parent_flow_when_inside_flow():
event_received = threading.Event()
@crewai_event_bus.on(LiteAgentExecutionStartedEvent)
def capture_event(source, event):
nonlocal captured_event
captured_event = event
def capture_agent(source, event):
nonlocal captured_agent
captured_agent = source
event_received.set()
result = flow.kickoff()
flow.kickoff()
assert event_received.wait(timeout=5), "Timeout waiting for agent execution event"
assert captured_event is not None
assert captured_event.agent_info["role"] == "Test Agent"
assert result is not None
assert captured_agent.parent_flow is flow
@pytest.mark.vcr()
@@ -367,14 +373,16 @@ def test_guardrail_is_called_using_string():
@crewai_event_bus.on(LLMGuardrailStartedEvent)
def capture_guardrail_started(source, event):
assert isinstance(source, Agent)
assert isinstance(source, LiteAgent)
assert source.original_agent == agent
with condition:
guardrail_events["started"].append(event)
condition.notify()
@crewai_event_bus.on(LLMGuardrailCompletedEvent)
def capture_guardrail_completed(source, event):
assert isinstance(source, Agent)
assert isinstance(source, LiteAgent)
assert source.original_agent == agent
with condition:
guardrail_events["completed"].append(event)
condition.notify()
@@ -675,151 +683,3 @@ def test_agent_kickoff_with_mcp_tools(mock_get_mcp_tools):
# Verify MCP tools were retrieved
mock_get_mcp_tools.assert_called_once_with("https://mcp.exa.ai/mcp?api_key=test_exa_key&profile=research")
# ============================================================================
# Tests for LiteAgent inside Flow (magic auto-async pattern)
# ============================================================================
from crewai.flow.flow import listen
@pytest.mark.vcr()
def test_lite_agent_inside_flow_sync():
"""Test that LiteAgent.kickoff() works magically inside a Flow.
This tests the "magic auto-async" pattern where calling agent.kickoff()
from within a Flow automatically detects the event loop and returns a
coroutine that the Flow framework awaits. Users don't need to use async/await.
"""
# Track execution
execution_log = []
class TestFlow(Flow):
@start()
def run_agent(self):
execution_log.append("flow_started")
agent = Agent(
role="Test Agent",
goal="Answer questions",
backstory="A helpful test assistant",
llm=LLM(model="gpt-4o-mini"),
verbose=False,
)
# Magic: just call kickoff() normally - it auto-detects Flow context
result = agent.kickoff(messages="What is 2+2? Reply with just the number.")
execution_log.append("agent_completed")
return result
flow = TestFlow()
result = flow.kickoff()
# Verify the flow executed successfully
assert "flow_started" in execution_log
assert "agent_completed" in execution_log
assert result is not None
assert isinstance(result, LiteAgentOutput)
@pytest.mark.vcr()
def test_lite_agent_inside_flow_with_tools():
"""Test that LiteAgent with tools works correctly inside a Flow."""
class TestFlow(Flow):
@start()
def run_agent_with_tools(self):
agent = Agent(
role="Calculator Agent",
goal="Perform calculations",
backstory="A math expert",
llm=LLM(model="gpt-4o-mini"),
tools=[CalculatorTool()],
verbose=False,
)
result = agent.kickoff(messages="Calculate 10 * 5")
return result
flow = TestFlow()
result = flow.kickoff()
assert result is not None
assert isinstance(result, LiteAgentOutput)
assert result.raw is not None
@pytest.mark.vcr()
def test_multiple_agents_in_same_flow():
"""Test that multiple LiteAgents can run sequentially in the same Flow."""
class MultiAgentFlow(Flow):
@start()
def first_step(self):
agent1 = Agent(
role="First Agent",
goal="Greet users",
backstory="A friendly greeter",
llm=LLM(model="gpt-4o-mini"),
verbose=False,
)
return agent1.kickoff(messages="Say hello")
@listen(first_step)
def second_step(self, first_result):
agent2 = Agent(
role="Second Agent",
goal="Say goodbye",
backstory="A polite farewell agent",
llm=LLM(model="gpt-4o-mini"),
verbose=False,
)
return agent2.kickoff(messages="Say goodbye")
flow = MultiAgentFlow()
result = flow.kickoff()
assert result is not None
assert isinstance(result, LiteAgentOutput)
@pytest.mark.vcr()
def test_lite_agent_kickoff_async_inside_flow():
"""Test that Agent.kickoff_async() works correctly from async Flow methods."""
class AsyncAgentFlow(Flow):
@start()
async def async_agent_step(self):
agent = Agent(
role="Async Test Agent",
goal="Answer questions asynchronously",
backstory="An async helper",
llm=LLM(model="gpt-4o-mini"),
verbose=False,
)
result = await agent.kickoff_async(messages="What is 3+3?")
return result
flow = AsyncAgentFlow()
result = flow.kickoff()
assert result is not None
assert isinstance(result, LiteAgentOutput)
@pytest.mark.vcr()
def test_lite_agent_standalone_still_works():
"""Test that LiteAgent.kickoff() still works normally outside of a Flow.
This verifies that the magic auto-async pattern doesn't break standalone usage
where there's no event loop running.
"""
agent = Agent(
role="Standalone Agent",
goal="Answer questions",
backstory="A helpful assistant",
llm=LLM(model="gpt-4o-mini"),
verbose=False,
)
# This should work normally - no Flow, no event loop
result = agent.kickoff(messages="What is 5+5? Reply with just the number.")
assert result is not None
assert isinstance(result, LiteAgentOutput)
assert result.raw is not None

View File

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View File

@@ -1202,9 +1202,8 @@ def test_complex_and_or_branching():
)
assert execution_order.index("branch_2b") > min_branch_1_index
# Final should be after both 2a and 2b
# Note: final may not be absolutely last due to independent branches (like branch_1c)
# that don't contribute to the final result path with sequential listener execution
# Final should be last and after both 2a and 2b
assert execution_order[-1] == "final"
assert execution_order.index("final") > execution_order.index("branch_2a")
assert execution_order.index("final") > execution_order.index("branch_2b")

View File

@@ -185,8 +185,8 @@ def test_task_guardrail_process_output(task_output):
result = guardrail(task_output)
assert result[0] is False
# Check that feedback is provided (wording varies by LLM)
assert result[1] and len(result[1]) > 0
assert result[1] == "The task result contains more than 10 words, violating the guardrail. The text provided contains about 21 words."
guardrail = LLMGuardrail(
description="Ensure the result has less than 500 words", llm=LLM(model="gpt-4o")

View File

@@ -0,0 +1,240 @@
"""Tests for agent_utils module, specifically debug logging for OutputParserError."""
import logging
from unittest.mock import MagicMock
import pytest
from crewai.agents.parser import AgentAction, OutputParserError
from crewai.utilities.agent_utils import handle_output_parser_exception
class TestHandleOutputParserExceptionDebugLogging:
"""Tests for debug logging in handle_output_parser_exception."""
def test_debug_logging_with_raw_output_and_agent_role(self, caplog: pytest.LogCaptureFixture) -> None:
"""Test that debug logging includes raw output and agent role when provided."""
error = OutputParserError("Invalid Format: I missed the 'Action:' after 'Thought:'.")
messages: list[dict[str, str]] = []
raw_output = "Let me think about this... The answer is..."
agent_role = "Researcher"
with caplog.at_level(logging.DEBUG):
result = handle_output_parser_exception(
e=error,
messages=messages,
iterations=0,
raw_output=raw_output,
agent_role=agent_role,
)
assert isinstance(result, AgentAction)
assert "Parse failed for agent 'Researcher'" in caplog.text
assert "Raw output (truncated) for agent 'Researcher'" in caplog.text
assert "Let me think about this... The answer is..." in caplog.text
assert "Retry 1 initiated for agent 'Researcher'" in caplog.text
def test_debug_logging_without_agent_role(self, caplog: pytest.LogCaptureFixture) -> None:
"""Test that debug logging works without agent role."""
error = OutputParserError("Invalid Format: I missed the 'Action:' after 'Thought:'.")
messages: list[dict[str, str]] = []
raw_output = "Some raw output"
with caplog.at_level(logging.DEBUG):
result = handle_output_parser_exception(
e=error,
messages=messages,
iterations=0,
raw_output=raw_output,
)
assert isinstance(result, AgentAction)
assert "Parse failed:" in caplog.text
assert "for agent" not in caplog.text.split("Parse failed:")[1].split("\n")[0]
assert "Raw output (truncated):" in caplog.text
assert "Retry 1 initiated" in caplog.text
def test_debug_logging_without_raw_output(self, caplog: pytest.LogCaptureFixture) -> None:
"""Test that debug logging works without raw output."""
error = OutputParserError("Invalid Format: I missed the 'Action:' after 'Thought:'.")
messages: list[dict[str, str]] = []
with caplog.at_level(logging.DEBUG):
result = handle_output_parser_exception(
e=error,
messages=messages,
iterations=0,
agent_role="Researcher",
)
assert isinstance(result, AgentAction)
assert "Parse failed for agent 'Researcher'" in caplog.text
assert "Raw output (truncated)" not in caplog.text
assert "Retry 1 initiated for agent 'Researcher'" in caplog.text
def test_debug_logging_truncates_long_raw_output(self, caplog: pytest.LogCaptureFixture) -> None:
"""Test that raw output is truncated when longer than 500 characters."""
error = OutputParserError("Invalid Format")
messages: list[dict[str, str]] = []
long_output = "A" * 600
with caplog.at_level(logging.DEBUG):
handle_output_parser_exception(
e=error,
messages=messages,
iterations=0,
raw_output=long_output,
agent_role="Researcher",
)
assert "A" * 500 + "..." in caplog.text
assert "A" * 600 not in caplog.text
def test_debug_logging_does_not_truncate_short_raw_output(self, caplog: pytest.LogCaptureFixture) -> None:
"""Test that short raw output is not truncated."""
error = OutputParserError("Invalid Format")
messages: list[dict[str, str]] = []
short_output = "Short output"
with caplog.at_level(logging.DEBUG):
handle_output_parser_exception(
e=error,
messages=messages,
iterations=0,
raw_output=short_output,
agent_role="Researcher",
)
assert "Short output" in caplog.text
assert "..." not in caplog.text.split("Short output")[1].split("\n")[0]
def test_debug_logging_retry_count_increments(self, caplog: pytest.LogCaptureFixture) -> None:
"""Test that retry count is correctly calculated from iterations."""
error = OutputParserError("Invalid Format")
messages: list[dict[str, str]] = []
with caplog.at_level(logging.DEBUG):
handle_output_parser_exception(
e=error,
messages=messages,
iterations=4,
raw_output="test",
agent_role="Researcher",
)
assert "Retry 5 initiated" in caplog.text
def test_debug_logging_escapes_newlines_in_raw_output(self, caplog: pytest.LogCaptureFixture) -> None:
"""Test that newlines in raw output are escaped for readability."""
error = OutputParserError("Invalid Format")
messages: list[dict[str, str]] = []
output_with_newlines = "Line 1\nLine 2\nLine 3"
with caplog.at_level(logging.DEBUG):
handle_output_parser_exception(
e=error,
messages=messages,
iterations=0,
raw_output=output_with_newlines,
agent_role="Researcher",
)
assert "Line 1\\nLine 2\\nLine 3" in caplog.text
def test_debug_logging_extracts_first_line_of_error(self, caplog: pytest.LogCaptureFixture) -> None:
"""Test that only the first line of the error message is logged."""
error = OutputParserError("First line of error\nSecond line\nThird line")
messages: list[dict[str, str]] = []
with caplog.at_level(logging.DEBUG):
handle_output_parser_exception(
e=error,
messages=messages,
iterations=0,
agent_role="Researcher",
)
assert "First line of error" in caplog.text
parse_failed_line = [line for line in caplog.text.split("\n") if "Parse failed" in line][0]
assert "Second line" not in parse_failed_line
def test_messages_updated_with_error(self) -> None:
"""Test that messages list is updated with the error."""
error = OutputParserError("Test error message")
messages: list[dict[str, str]] = []
handle_output_parser_exception(
e=error,
messages=messages,
iterations=0,
)
assert len(messages) == 1
assert messages[0]["role"] == "user"
assert messages[0]["content"] == "Test error message"
def test_returns_agent_action_with_error_text(self) -> None:
"""Test that the function returns an AgentAction with the error text."""
error = OutputParserError("Test error message")
messages: list[dict[str, str]] = []
result = handle_output_parser_exception(
e=error,
messages=messages,
iterations=0,
)
assert isinstance(result, AgentAction)
assert result.text == "Test error message"
assert result.tool == ""
assert result.tool_input == ""
assert result.thought == ""
def test_printer_logs_after_log_error_after_iterations(self) -> None:
"""Test that printer logs error after log_error_after iterations."""
error = OutputParserError("Test error")
messages: list[dict[str, str]] = []
printer = MagicMock()
handle_output_parser_exception(
e=error,
messages=messages,
iterations=4,
log_error_after=3,
printer=printer,
)
printer.print.assert_called_once()
call_args = printer.print.call_args
assert "Error parsing LLM output" in call_args.kwargs["content"]
assert call_args.kwargs["color"] == "red"
def test_printer_does_not_log_before_log_error_after_iterations(self) -> None:
"""Test that printer does not log before log_error_after iterations."""
error = OutputParserError("Test error")
messages: list[dict[str, str]] = []
printer = MagicMock()
handle_output_parser_exception(
e=error,
messages=messages,
iterations=2,
log_error_after=3,
printer=printer,
)
printer.print.assert_not_called()
def test_backward_compatibility_without_new_parameters(self) -> None:
"""Test that the function works without the new optional parameters."""
error = OutputParserError("Test error")
messages: list[dict[str, str]] = []
result = handle_output_parser_exception(
e=error,
messages=messages,
iterations=0,
)
assert isinstance(result, AgentAction)
assert len(messages) == 1

View File

@@ -348,11 +348,11 @@ def test_agent_emits_execution_error_event(base_agent, base_task):
error_message = "Error happening while sending prompt to model."
base_agent.max_retry_limit = 0
# Patch at the class level since agent_executor is created lazily
with patch.object(
CrewAgentExecutor, "invoke", side_effect=Exception(error_message)
):
CrewAgentExecutor, "invoke", wraps=base_agent.agent_executor.invoke
) as invoke_mock:
invoke_mock.side_effect = Exception(error_message)
with pytest.raises(Exception): # noqa: B017
base_agent.execute_task(
task=base_task,